CN103959812A

CN103959812A - Transmedia message transmission method, device and system

Info

Publication number: CN103959812A
Application number: CN201280002005.7A
Authority: CN
Inventors: 潘稻; 方李明; 赵泉波; 张利
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2014-07-30
Anticipated expiration: 2032-11-26
Also published as: CN103959812B; WO2014079060A1

Abstract

Provided are a transmedia message transmission method, device and system. The transmedia message transmission method includes receiving a message sent by an optical line terminal; acquiring a link identifier and a channel identifier according to the message, the channel identifier being an identifier of a broadcast channel corresponding to the link identifier; encoding the message and modulating same into a transmission resource corresponding to the channel identifier using modulation and encoding parameters corresponding to the channel identifier to obtain a modulated signal; and sending the modulated signal to a coaxial network unit corresponding to the link identifier via the transmission resource, so that the coaxial network unit parses the message using the channel identifier and link identifier. Thus, the management of the optical line terminal of an optical fibre domain on the coaxial network of a coaxial domain is realized through a media conversion unit.

Description

Transmedia message transmission method, device and system

Message transmitting method, apparatus and system across medium

The present invention relates to optical fiber and coaxial cable communication technology, more particularly to a kind of message transmitting method, apparatus and system across medium for technical field.Background technology

EPON（Passive Optical Network, PON) technology is optical fiber transmission and the access technology of a kind of point-to-multipoint, descending use broadcast mode, up use time division multiple access way, active node device need not be used in optical branch point, it is only necessary to use simple optical branching device.The topological structures such as EPON can neatly constitute tree-shaped, star-like or bus-type.

On the basis of PON technologies, American Institute of Electrical and Electronics Engineers（Institute of Electrical and Electronics Engineers, IEEE) the working group that tissue is set up, i.e. first mile Ethernet (Ethernet for the First Mile, EFM) working group, has promulgated Ethernet passive optical network（Ethernet Passive Optical Network, EPON) standard, EPON technologies are by Ethernet（Ethernet) technology is as core, and has merged the intelligent acess technology of PON technologies.The characteristics of EPON technologies have the advantage and optical-fiber network high bandwidth of the inexpensive and high ease for use of Ethernet concurrently.

On the basis of EPON technologies, ieee standard tissue by ripe EPON technologies and agreement in order to introduce coaxial cable（Coaxial Cable, COAX) network, by EPON agreements by optical fiber（Fiber) domain pellucidly extends to coaxial cable（COAX) domain, is setting about formulation standard.Because EPON agreements are the physical layer designs for Fiber domains, the modulation technique that Fiber domains are used is binary system amplitude-shift keying（On-Off Keying, OOK), and the modulation technique that COAX domains are generally used is OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology, because there is blunt big difference in OOK physical layer modulations technology and OFDM modulation techniques, for example OOK modulation techniques resource exists only in time dimension, and OFDM modulation techniques resource is present in time dimension and frequency dimension simultaneously, therefore, EPON agreements of the prior art there is no method direct 1 to enter into COAX networks, and COAX domains are managed. The content of the invention is the present invention provide a kind of message transmitting method, apparatus and system across medium, to solve to utilize

The problem of EPON agreements are managed to COAX domains.

One side of the invention provides a kind of message transmitting method across medium, including：

Receive the message that optical line terminal is sent；

According to the message, link identification and gap marker are obtained, the gap marker is the mark of broadcast channel corresponding with the link identification；

Using the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, the signal after being modulated；

Signal after the modulation is sent to coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, the message is parsed.

With reference to the message transmitting method across medium of one side, in the first possible implementation, the link identification is carried in the message；

Correspondingly, it is described according to the message, obtain link identification and gap marker is specially：The link identification in the message is obtained, and according to the link identification, inquires about the gap marker of broadcast channel corresponding with the link identification, and determines the gap marker；

Or, the link identification and the gap marker are carried in the message；

Correspondingly, it is described according to the message, obtain link identification and gap marker is specially：Obtain the link identification and the gap marker in described 4 blunt texts.

With reference to the message transmitting method across medium of one side, in second of possible implementation, it is described to utilize the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker specially：

Using the corresponding modulating-coding parameter of the gap marker, in physical layer is encoded and modulated the corresponding transfer resource of the gap marker to the message.

With reference to the message transmitting method across medium of one side, in the third possible implementation, methods described also includes：

Receive what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to the network attribute, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up； By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit and/or the optical line terminal are sent to.

With reference to the message transmitting method across medium of one side, in the 4th kind of possible implementation, methods described also includes：

According to the size of the data volume of the message, the transfer resource for transmitting the message is distributed；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；

The transfer resource allocation result is sent to the coaxial network unit.

With reference to the on one side, the first any one into the 4th kind of possible implementation, it is described to receive the message that optical line terminal sends and be specially in the 5th kind of possible implementation：

Receive the message that the optical line terminal is sent with the transmission rate of the corresponding broadcast channel of the gap marker.

Second aspect of the invention is to provide a kind of change of medium unit, including：

Receiving unit, the message for receiving optical line terminal transmission；

Acquiring unit, for according to the message, obtaining link identification and gap marker, the gap marker is the mark of broadcast channel corresponding with the link identification；

Processing unit, for using the corresponding modulating-coding parameter of the gap marker, being encoded and modulated to the message in the corresponding transfer resource of the gap marker, the signal after being modulated；

Transmitting element, for the signal after the modulation to be sent into coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, parses the message.

The change of medium unit provided with reference to second aspect, in the first possible implementation, the link identification is carried in the message that the receiving unit is received；

Correspondingly, the acquiring unit specifically for：

The link identification in the message is obtained, and according to the link identification, inquires about the gap marker of broadcast channel corresponding with the link identification, and determines the gap marker；

Or, carry the link identification and the gap marker in the message that the receiving unit is received；

Correspondingly, the acquiring unit specifically for：

Obtain the link identification and the gap marker in the message. With reference to second aspect provide change of medium unit, in second of possible implementation, the processing unit specifically for：

The change of medium unit provided with reference to second aspect, in the third possible implementation, the processing unit is additionally operable to：

Receive what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to the network attribute, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up；By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit and/or the optical line terminal are sent to.

The change of medium unit provided with reference to second aspect, in the 4th kind of possible implementation, the processing unit is additionally operable to：

According to the size of the data volume of the message, the transfer resource for transmitting the message is distributed；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the coaxial network unit.

With reference to second aspect, the first any one into the 4th kind of possible implementation, in the 5th kind of possible implementation, the receiving unit specifically for：

Third aspect of the present invention is to provide a kind of change of medium unit, including：

Processor, memory, bus and communication interface, the processor, the memory and the communication interface are connected by the bus and complete mutual communication；

The memory, for depositing program；

The processor, for performing described program；

Wherein, described program is used for the message for receiving optical line terminal transmission；

Signal after the modulation is sent to through the transfer resource corresponding with the link identification coaxial NE, so that the coaxial network unit utilizes the gap marker and the link identification, parses the message.

4th aspect of the invention is to provide a kind of message transfer system across medium, including above-mentioned optical line terminal, above-mentioned coaxial network unit, and above-mentioned change of medium unit；Communicated to connect between the optical line terminal, the change of medium unit and the coaxial network unit.

5th aspect of the invention is to provide a kind of message transmitting method across medium, including：

Link identification according to corresponding to the message received, inquires about the gap marker of broadcast channel corresponding with the link identification；

The gap marker and the link identification are carried in the message, with the corresponding transmission rate of the broadcast channel, the message is sent to change of medium unit, so that the change of medium unit utilizes the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, signal after being modulated, and the signal after the modulation is sent to the corresponding coaxial network unit of the link identification through the transfer resource, so that the coaxial network unit utilizes the corresponding modulating-coding parameter of the gap marker, demodulating and decoding goes out data bit on the transfer resource, and according to the link identification from the data bit, obtain object message.

With reference to the message transmitting method across medium of the 5th aspect, described with the corresponding transmission rate of the broadcast channel in the first possible implementation, the message is sent into the change of medium unit is specially：

In medium access control MAC layer, it is controlled by the data frame period to the message, with the speed less than or equal to the transmission rate, the message is sent to the change of medium unit.

With reference to the message transmitting method across medium of the 5th aspect, in second of possible implementation, methods described also includes：

The transfer resource allocation result is sent to the change of medium unit and/or the coaxial network unit.

With reference to the 5th aspect, the first or second of possible implementation, in the third possible implementation, the broadcast channel is used to use corresponding modulating-coding parameter, and the blunt text is sent at least one coaxial network unit on corresponding transfer resource. 6th aspect of the invention is to provide a kind of optical line terminal, including：

Query unit, for the link identification according to corresponding to the message received, inquires about the gap marker of broadcast channel corresponding with the link identification；

Transmitting element, for the gap marker and the link identification to be carried in the message, with the corresponding transmission rate of the broadcast channel, the message is sent to change of medium unit, so that the change of medium unit utilizes the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, signal after being modulated, and the signal after the modulation is sent to the corresponding coaxial network unit of the link identification through the transfer resource, so that the coaxial network unit utilizes the corresponding modulating-coding parameter of the gap marker, demodulating and decoding goes out data bit on the transfer resource, and according to the link identification from the data bit, obtain object message.

With reference to the optical line terminal of the 6th aspect, in the first possible implementation, the transmitting element is sent to the change of medium unit with the corresponding transmission rate of the broadcast channel, by the message and is specially：

With reference to the optical line terminal of the 6th aspect, in second of possible implementation, the optical line terminal also includes：

Processing unit, for the size of the data volume according to the message, distributes the transfer resource for transmitting the message；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the change of medium unit and/or the coaxial network unit.

With reference to the 6th aspect, the first or second of possible implementation, in the third possible implementation, the broadcast channel is used to use corresponding modulating-coding parameter, and the blunt text is sent at least one coaxial network unit on corresponding transfer resource.

The 7th aspect of the present invention provides a kind of message transmitting method across medium, including：

Instruction in transfer resource allocation result is for the transfer resource of receive information and the gap marker of broadcast channel, using the corresponding modulating-coding parameter of the gap marker, and decoding is demodulated to the transfer resource, obtains data bit；

The link identification carried according to the data bit, object message is obtained from the data bit. The 8th aspect of the present invention provides a kind of coaxial network unit, including：

Receiving unit, for the instruction in transfer resource allocation result for the transfer resource of receive information and the gap marker of broadcast channel, using the corresponding modulating-coding parameter of the gap marker, decoding is demodulated to the transfer resource, data bit is obtained；

Processing unit, for the link identification carried according to the data bit, object message is obtained from the data bit.

The 9th aspect of the present invention provides a kind of optical line terminal, including：

The memory, for depositing program；

The processor, for performing described program；

Wherein, described program is used for the link identification according to corresponding to the message received, inquires about the gap marker of broadcast channel corresponding with the link identification；

The tenth aspect of the present invention provides a kind of coaxial network unit, including：

The memory, for depositing program；

The processor, for performing described program；

Wherein, the instruction that described program is used in transfer resource allocation result is for the transfer resource of receive information and the gap marker of broadcast channel, using the corresponding modulating-coding parameter of the gap marker, decoding is demodulated to the transfer resource, data bit is obtained；

The link identification carried according to the data bit, object message is obtained from the data bit.Tenth one side of the invention provides a kind of optical network device, including above-mentioned optical line terminal and medium Converting unit, the change of medium unit is connected with the optical line terminal.

The 12nd aspect of the present invention provides a kind of message transfer system across medium, including above-mentioned optical network device and coaxial network unit, is communicated to connect between the optical network device and the coaxial network unit.

Message transmitting method, apparatus and system provided in an embodiment of the present invention across medium, multiple coaxial network units are given one or more groups in advance, across medium change of medium unit receive optical line terminal transmission message after, the corresponding modulation system of gap marker in message is modulated to the message, and the message after modulation is sent to the corresponding one group of coaxial network unit of the gap marker, object message is obtained by link identification of the coaxial network unit in message, so that real by the change of medium unit

Illustrate the flow chart that Fig. 1 is the message transmitting method provided in an embodiment of the present invention across medium；Fig. 2 is the flow chart of another message transmitting method across medium provided in an embodiment of the present invention；Fig. 3 is the flow chart of the another message transmitting method across medium provided in an embodiment of the present invention；Fig. 4 is the schematic flow sheet that coaxial network unit provided in an embodiment of the present invention is accessed and registered；

Fig. 5 a are a kind of schematic diagram of the transfer resource method of salary distribution provided in an embodiment of the present invention；Fig. 5 b are the schematic diagram of another transfer resource method of salary distribution provided in an embodiment of the present invention；Fig. 5 c are the schematic diagram of another transfer resource method of salary distribution provided in an embodiment of the present invention；Fig. 6 a are the schematic diagram of the protocol hierarchy of EPOC systems provided in an embodiment of the present invention；Fig. 6 b are the schematic diagram of another protocol hierarchy of EPOC systems provided in an embodiment of the present invention；Fig. 7 a are the structural representation of optical line terminal provided in an embodiment of the present invention；

Fig. 7 b are the structural representation of another optical line terminal provided in an embodiment of the present invention；

Fig. 7 c are the structural representation of another optical line terminal provided in an embodiment of the present invention；

Fig. 8 a are the structural representation of change of medium unit provided in an embodiment of the present invention；

Fig. 8 b are the structural representation of another change of medium unit provided in an embodiment of the present invention；Fig. 9 a are the structural representation of coaxial network unit provided in an embodiment of the present invention；

Fig. 9 b are the structural representation of another coaxial network unit provided in an embodiment of the present invention；Figure 10 a are the structural representation of optical network device provided in an embodiment of the present invention；

Figure 10 b are the structural representation of optical network device provided in an embodiment of the present invention； Figure 11 is the structural representation of the message transfer system provided in an embodiment of the present invention across medium；Figure 12 is the structural representation of another message transfer system across medium provided in an embodiment of the present invention.EPON agreement of the embodiment based on coaxial network（EPON Protocol over Coax, EPOC) it is the standard that IEEE normal structures set about formulating, the purpose is to which EPON technologies and agreement are introduced into COAX networks, the optical line terminal in optical fiber domain is utilized to realize（Optical Line Terminal, OLT) to the coaxial network unit in coaxial domain（COAX Network Unit, CNU) it is managed, wherein, (the Fiber COAX Unit of connection fiber medium and coaxial cable medium respectively are set between optical line terminal and coaxial network unit, FCU), fiber-coaxial unit can also be referred to as change of medium unit.

Coaxial domain described in various embodiments of the present invention is to refer to COAX networks, described optical fiber domain is to refer to the fiber optic network based on EPON technologies, and described EPOC systems are to refer to the communication system being made up of optical line terminal, change of medium unit and coaxial network unit.

Mainly for optical fiber in various embodiments of the present invention（Fiber) medium and coaxial cable（Coaxial Cable) medium application scenarios, the message transmitting method across medium is illustrated.It should be noted that the message transmitting method across medium is equally applicable at other across in the application scenarios of medium transmitting message.

According to the network characteristic of coaxial network unit in various embodiments of the present invention, the coaxial network unit with similar network characteristic is included into an equipment group.Broadcast channel in various embodiments of the present invention is that correspond to equipment group, that is to say, that.Each broadcast channel correspond to one group of coaxial network unit, and the message transmitted in the broadcast channel will be sent to corresponding one group of coaxial network unit.

In allocation of transmission resources, no longer it is the independent allocation of transmission resources of each coaxial network unit in coaxial domain, but match somebody with somebody corresponding transfer resource for each equipment component, that is, each broadcast channel takes corresponding transfer resource, for sending message for the corresponding one group of coaxial network unit of the broadcast channel.Transfer resource can be frequency resource, time resource or the frequency time resource block in communication.

Because the setting of modulating-coding is carried out for transfer resource, correspondingly, after coaxial network unit to be divided into one or more equipment groups, modulating-coding parameter is set respectively for each equipment group, that is, each broadcast channel is corresponding with one group of modulating-coding parameter, and the modulating-coding parameter of each broadcast channel be able to can also be differed with identical.The broadcast channel is used to use corresponding modulating-coding parameter, and the blunt text is sent at least one coaxial network unit on corresponding transfer resource. Setting to the modulating-coding parameter includes the setting to modulation system and parameter.For example, the quadrature amplitude modulation generally used in OFDM technologies（Quadrature Amplitude Modulation, QAM) and more modulation exponent number, such as 4096QAM, 2048QAM, 1024QAM, 256QAM etc.；Such as forward error correction coding such as low density parity check code (Low Density Parity-Check Code, LDPC)（Forward Error Correction, FEC) the parameter such as the corresponding code check of coded system, code block size.

In concrete implementation, a limited number of kind of coding parameter can be typically defined in a standard.For example, when using LDPC, defining a limited number of kind of encoder matrix, different code check and code block size are correspond to respectively.In implementation process, one or more can therefrom be selected according to actual channel situation and applied on communication line.

In addition, modulation parameter and coding parameter can also be grouped together into a limited number of kind of modulation coding mode, it is such as wireless in Modulation and Coding Scheme in forth generation communication technology Long Term Evolution (Long Term Evolution, LTE)（Modulation and Coding Scheme, MCS ) .The present invention does not limit modulation and coding implementation in systems, and form of the relevant parameter in negotiations process, usage.

Meanwhile, unified encoder matrix or parameter can be used in system, to cause each equipment in system only to need the modulation system and parameter of interaction determination in implementation process, wherein, modulating-coding parameter is adopted name in various embodiments of the present invention.

Fig. 1 is the flow chart of the message transmitting method provided in an embodiment of the present invention across medium, as shown in figure 1, this method includes：

101st, the link identification according to corresponding to the message received, inquires about the gap marker of broadcast channel corresponding with the link identification.

Specifically, the downlink data transmission direction of EPOC systems is that the message received by change of medium unit, is sent to coaxial network unit by optical line terminal.Optical line terminal obtains link identification corresponding with the message after message is received, and specifically can inquire about the link identification by the destination address or other information carried in message.

Wherein, use according to destination address determine the mode of link identification for, the message is carried in message received by optical line terminal needs the address of destination address, the i.e. user side equipment that the address of coaxial network unit or coaxial network unit are connected of transmission.Optical line terminal is previously stored with the address of one or more coaxial network units and the corresponding relation of link identification, using the destination address in 4 blunt texts, can find corresponding link identification. Link identification, i.e. LLID（Logical Link Identifier, LLID), it is the identification information made a distinction to logical transmission link employed in EPON agreements.Optical line terminal may learn the address for the user side equipment that the address of coaxial network unit or coaxial network unit are connected, it is established that the corresponding relation of destination address and logical links, then the destination address index logic link identification in message.

When optical line terminal is searched in the destination address and the corresponding relation of link identification stored, if the link identification corresponding with the destination address found is one, that is, the link identification is obtained；If the link identification corresponding with the destination address found is multiple, a link identification is therefrom selected.

Optical line terminal can also be according to the VLAN ID carried in message（Virtual Local Area Network ID, VLANID), find the corresponding link identification of the message.Specifically, the method that optical line terminal obtains the link identification of received message, can use with similar implementation in the prior art, here is omitted.

Also be stored with optical line terminal link identification and broadcast channel gap marker corresponding relation.Can determine which coaxial network unit message is sent to using link identification, transfer resource and the transmission rate that can determine to need the modulating-coding parameter used, needs to utilize using gap marker.One link identification can have corresponding relation with the gap marker of one or more broadcast channels.

Optical line terminal is after link identification is found, when being searched in the link identification and the corresponding relation of gap marker stored, if find gap marker corresponding with the link identification for one when, that is, obtain the gap marker；If the gap marker corresponding with the link identification found is multiple, a gap marker is therefrom selected.

102nd, the gap marker and the link identification are carried in the message, with the corresponding transmission rate of the broadcast channel, the message is sent to change of medium unit.

Specifically, be also stored with optical line terminal gap marker and the corresponding relation of transmission rate, are between gap marker and transmission rate --- corresponding relation.Optical line terminal is after gap marker is found, you can find transmission rate corresponding with the gap marker, the i.e. transmission rate of the broadcast channel.Because transmission rate is determined by modulating-coding parameter, each broadcast channel can be independently arranged modulating-coding parameter, therefore, and each broadcast channel is corresponding respective transmission rate.Broadcast channel is not the pipeline of actual transmissions message, but the passage of meaning in logic, represents the mode that coding is modulated to message.Therefore broadcast channel can also be referred to as to modulation template or modulating-coding template.

In order that obtain message does not occur congestion in transmitting procedure as far as possible, optical line terminal is used and passage mark Know corresponding transmission rate, the message is sent to change of medium unit.

Optionally, optical line terminal is in medium access control（Medium Access Control, MAC) layer, it is controlled by the data frame period to the message, with the speed less than or equal to the transmission rate, the message is sent to the change of medium unit.So that optical line terminal sends the speed of message, and it is equal or lower with the transmission rate of corresponding broadcast channel, so that message not congestion in transmitting procedure.

Optical line terminal will carry the message of the gap marker found and link identification, be sent to change of medium unit.

Fig. 2 is the flow chart of another message transmitting method across medium provided in an embodiment of the present invention, as shown in Fig. 2 this method includes：

201st, the message that optical line terminal is sent is received.

202nd, according to the message, link identification and gap marker are obtained.Wherein, the gap marker is the mark of broadcast channel corresponding with the link identification.

Specifically, change of medium unit can by the following method, according to Receive message link identification and gap marker.

A kind of mode is that the link identification is carried in the message；Change of medium unit obtains the link identification in the message, and according to the link identification, inquires about the gap marker of broadcast channel corresponding with the link identification, and determines the gap marker；

Specifically, change of medium unit receives the message transmitted by optical line terminal, link identification is carried in messages.Change of medium unit utilizes the link identification, can inquire about the gap marker for determining broadcast channel corresponding with the link identification.

Be stored with change of medium unit link identification and broadcast channel gap marker corresponding relation.Can determine which coaxial network unit message is sent to using link identification, the transfer resource that can determine to need the modulating-coding parameter used, needs to utilize using gap marker.One link identification can have corresponding relation with the gap marker of one or more broadcast channels.

Change of medium unit is after link identification is found, when being searched in the link identification and the corresponding relation of gap marker stored, if find gap marker corresponding with the link identification for one when, that is, obtain the gap marker；If the gap marker corresponding with the link identification found is multiple, a gap marker is therefrom selected.

Another way is that the link identification and the gap marker are carried in the message；Medium Converting unit obtains the link identification and the gap marker in the message.

Link identification and gap marker are carried in the message.Wherein, the link identification is the mark for the transmission link that the optical line terminal is inquired according to the destination address and/or other information of received message, and the gap marker is the mark that the optical line terminal inquires about the broadcast channel determined according to the link identification.

Change of medium unit receives the message transmitted by optical line terminal, and link identification and gap marker that optical line terminal is found according to destination address and/or other information are carried in messages.Change of medium unit utilizes gap marker therein, can find modulating-coding parameter corresponding with the gap marker.

203rd, using the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, the signal after being modulated.

Specifically, the corresponding relation being stored with change of medium unit between gap marker and modulating-coding parameter, by the gap marker carried in message, can find corresponding modulating-coding parameter.Change of medium unit utilizes found modulating-coding parameter, and the message is modulated.

Optionally, change of medium unit utilizes the corresponding modulating-coding parameter of the gap marker, and the message is modulated in physical layer.

So as to which change of medium unit uses the modulating-coding parameter corresponding to the gap marker in message to modulate message, i.e., using modulation system corresponding with broadcast channel, message is modulated.Change of medium unit can use single carrier orthogonal Modulation and Amplitude Modulation（Single Carrier Quadrature Amplitude Modulation, SC-QAM) or the multi-carrier modulation technology such as OFDM (Orthogonal Frequency-Division Multiplexing, OFDM).

204th, the signal after the modulation is sent to coaxial network unit corresponding with the link identification through the transfer resource.It is in order that the coaxial network unit parses the message using the gap marker and the link identification to perform step 204.

Specifically, the corresponding relation being also stored between gap marker and transfer resource in change of medium unit, by the gap marker carried in message, can find the corresponding transfer resource for transmitting message.Message is sent to coaxial network unit by change of medium unit by corresponding transfer resource.

Link identification is also carried in message received by change of medium unit, because a coaxial network unit can have corresponding relation with a plurality of logical links, and for each logical links, only there is corresponding relation with a coaxial network unit, therefore, it can know need which coaxial network unit message is sent to according to the link identification. So as to which message is sent to the corresponding coaxial network unit of the link identification by change of medium unit.Also, also carry gap marker and link identification in the message.

Fig. 3 is the flow chart of the another message transmitting method across medium provided in an embodiment of the present invention, as shown in figure 3, this method includes：

301st, the instruction in transfer resource allocation result is for the transfer resource of receive information and the gap marker of broadcast channel, using the corresponding modulating-coding parameter of the gap marker, and decoding is demodulated to the transfer resource, obtains data bit.

Specifically, being previously stored with resource allocation rule in coaxial network unit, resource allocation rule includes being used to indicate coaxial network unit receive information on which broadcast channel and which transfer resource.Transfer resource is corresponding with the gap marker of broadcast channel, and coaxial network unit can not only be informed in receive information on which transfer resource according to resource allocation rule, additionally it is possible to know the gap marker of corresponding broadcast channel.

Also be stored with gap marker and the corresponding relation of modulating-coding parameter in coaxial network unit.According to the instruction in transfer resource allocation result, corresponding transfer resource is demodulated.The required modulating-coding parameter used is corresponding with gap marker when being demodulated.Coaxial network unit is found corresponding modulating-coding parameter, corresponding transfer resource is demodulated using the modulating-coding parameter according to gap marker indicated in transfer resource allocation result.After the demodulation, data bit is obtained.

302nd, the link identification carried according to the data bit, object message is obtained from the data bit.

Because optical line terminal is when sending message, message is sent to the corresponding one group of coaxial network unit of broadcast channel, therefore, belongs to one or more coaxial network units of the broadcast channel, can receive data bit.Each coaxial network unit of data bit is received, after demodulation outgoing packet, is judged according to the link identification carried in message.Coaxial network unit corresponding with the link identification can get object message from the message.

Message transmitting method provided in an embodiment of the present invention across medium, multiple coaxial network units are given one or more groups in advance, across medium change of medium unit receive optical line terminal transmission message after, the corresponding modulation system of gap marker in message is modulated to the message, and the message after modulation is sent to the corresponding one group of coaxial network unit of the gap marker, object message is obtained by link identification of the coaxial network unit in message, so as to realize that the optical line terminal in optical fiber domain is managed to the coaxial network unit in coaxial domain by the change of medium unit. In order to which EPON protocol transparents to be extended to coaxial domain, coaxial network unit is needed in initial access network, set up and be connected in physical layer with change of medium unit, and then registered on optical line terminal, to realize that optical line terminal is managed based on link identification to coaxial network unit.

Fig. 4 is the schematic flow sheet that coaxial network unit provided in an embodiment of the present invention is accessed and registered.Detailed process carries out the processes such as Stochastic accessing, synchronous, channel measurement and the signal-to-noise ratio (SNR) estimation of physical layer with change of medium unit as shown in figure 4, coaxial network unit is in initial access network.

Coaxial network unit initiates Stochastic accessing, may be selected to be transmitted using orthogonal code sequence by fixed position in the frame structure；Change of medium unit is detected after corresponding random access code, and by the random access code or other forms, interim mark is carried out to coaxial network unit；Change of medium unit is that the coaxial network unit distributes resource for uplink, and by for the resource allocation of uplink to coaxial network unit；Coaxial network unit carries out channel measurement, obtains the network attributes such as signal to noise ratio on different sub-carriers, and by the network attribute measured by the above-mentioned resource for uplink, upper 4 is blunt to change of medium unit.

Change of medium unit is according to the specific channel situation of coaxial network unit, with reference to the corresponding modulation coding mode of each broadcast channel, determines the broadcast channel that coaxial network unit can be supported, and coaxial network unit is accessed into one or more broadcast channels.The gap marker for the broadcast channel that change of medium unit can access coaxial network unit is sent to coaxial network unit.Access so as to completing coaxial network unit and be situated between in addition, change of medium unit can also corresponding modulating-coding parameter be sent to coaxial network unit respectively by the gap marker of broadcast channel and each broadcast channel in physical layer；Correspondingly, coaxial network unit is after the measurement to network attribute is completed, can be according to measured network attribute, and the modulating-coding parameter corresponding to each broadcast channel, accessible broadcast channel is judged, without the broadcast channel that can access by change of medium unit judges coaxial network unit.

During physical layer access between coaxial network unit and change of medium unit, also include the processes such as synchronization, channel estimation, for example before Stochastic accessing is initiated, coaxial network unit need to complete synchronous acquisition physical layer frame position and OFDM symbol position, coaxial network unit is obtained before change of medium unit distribution resource information, it is necessary to complete channel estimation and obtain described distribution information etc. according to estimated result demodulation.

And then, coaxial network unit initiates login request message to optical line terminal（), REGISTER-REQ the gap marker of the accessible one or more broadcast channels of the coaxial network unit is carried in the login request message. Optical line terminal is registered to coaxial network unit, can be from the gap marker of one or more broadcast channels transmitted by coaxial network unit, select one or more broadcast channels, the broadcast channel that finally can access as the coaxial network unit, and link identification is distributed for the coaxial network unit, and set up the corresponding relation of link identification and broadcast channel.Optical line terminal succeeds in registration after being succeeded in registration to coaxial network unit to coaxial network unit feedback（REGISTER) message, carries the gap marker for the broadcast channel for finally allowing the coaxial network unit to access, and link identification corresponding with these broadcast channels respectively in this succeeds in registration message.

Wherein, optical line terminal by the gap marker of broadcast channel when being sent to coaxial network unit, gap marker can be carried in link identification, some bit bit identification gap markers in link identification are utilized, link identification and gap marker can also be carried respectively in the message that succeeds in registration.In addition, gap marker can also be carried in Operations, Administration and Maintenance（Operation Administration and Maintenance, OAM) in message, it is sent to coaxial network unit.

So as to which coaxial network unit completes the registration on optical line terminal.

Fig. 5 a are a kind of schematic diagram of the transfer resource method of salary distribution provided in an embodiment of the present invention；Fig. 5 b are the schematic diagram of another transfer resource method of salary distribution provided in an embodiment of the present invention；Fig. 5 c are the schematic diagram of another transfer resource method of salary distribution provided in an embodiment of the present invention.Shown as shown in Figure 5 a to 5 c, transfer resource can be frequency resource, time resource or frequency and time resource block.

Individually below to the corresponding relation between broadcast channel and coaxial network unit, and corresponding relation between broadcast channel and transfer resource is specifically described.Corresponding relation between gap marker.Based on EPON agreements, link identification can be used for characterizing coaxial network unit, therefore the corresponding relation of the gap marker of link identification and broadcast channel, be exactly the corresponding relation of coaxial network unit and broadcast channel.And broadcast channel be it is corresponding with one group of coaxial network unit, therefore, the corresponding relation between broadcast channel and link identification, reflection be coaxial network unit packet situation.

The operating procedure being grouped to coaxial network unit, can be carried out on change of medium unit.Change of medium unit receives what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to the network attribute, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up；By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit is sent to by physical layer, then the corresponding relation of link identification and the gap marker of broadcast channel is sent to by optical line terminal by MAC layer by coaxial network unit. Specifically, coaxial network unit is when reaching the standard grade, or periodically by the network attribute that it is measured in predeterminated frequency resource,

Terminal.Predeterminated frequency resource can be subcarrier, and network attribute can be signal to noise ratio.

If the network attribute obtained by measurement is sent to change of medium unit by coaxial network unit, change of medium unit sets up the link identification of the coaxial network unit and the corresponding relation of broadcast channel according to network attribute.Coaxial network unit can measure network attribute, i.e. coaxial network unit respectively when reporting the network attribute for each subcarrier or continuous multiple subcarriers, will be for each subcarrier or continuous multiple subcarrier difference report network attributes.I.e. according to the network attribute of the coaxial network unit, know the transmittability of the coaxial network unit on each channel, so that it is determined that the coaxial network unit is included into which kind of corresponding broadcast channel of modulating-coding parameter, so that change of medium unit completes the packet to coaxial network unit.And then change of medium unit sets up the corresponding relation of the link identification of coaxial network unit and the gap marker of broadcast channel, and the corresponding relation is sent to optical line terminal and/or coaxial network unit.

Wherein, coaxial network unit can be used and similar implementation in the prior art for the method for each subcarrier or continuous multiple subcarriers measurement network attributes.Optical line terminal or change of medium unit are after network attribute is received, it can also use and similar implementation in the prior art, network attribute according to receiving determines corresponding modulating-coding parameter, what it is due to broadcast channel sign is different modulating-coding parameters, therefore, network attribute correspondence coaxial network unit correspondence that is, is correspondingly determined

(Modulation and Coding Scheme, MCS) is directed to continuous multiple subcarriers and determines modulating-coding parameter.

Specifically, because broadcast channel correspond to corresponding modulating-coding parameter, and each broadcast channel correspond to a default threshold value, optical line terminal or change of medium unit are after the network attribute that coaxial network unit is reported is received, if network attribute is signal to noise ratio, then signal to noise ratio can access the corresponding broadcast channel of the threshold value, i.e. coaxial network unit more than or equal to the coaxial network unit of corresponding threshold value and have the ability to access corresponding broadcast channel.If optical line terminal or change of medium unit judges go out coaxial network unit capable access multiple broadcast channels, physical layer efficiency highest broadcast channel can be selected, or a broadcast channel is therefrom selected according to other strategies, it is used as broadcast channel corresponding with the coaxial network unit.

If coaxial network unit is corresponding with multiple link identifications, the corresponding relation of the plurality of link identification and broadcast channel can be set up in optical line terminal, change of medium unit and coaxial network unit；Also, One coaxial network unit can be divided into multiple broadcast channels, that is, the link identification of a coaxial network unit can have corresponding relation with the gap marker of multiple broadcast channels.

When one link identification and a broadcast channel have corresponding relation, the gap marker of the broadcast channel can be encapsulated in link identification, if characterizing the gap marker using the kilo byte in link identification.For example, setting 3bit information to be used as gap marker in link identification.In this way, change of medium unit also can be without preserving the corresponding relation that link identification is identified with broadcast channel.

When there is corresponding relation with a plurality of broadcast channel in one link identification, then some bits in link identification can not be utilized to represent broadcast channel, and need to store the corresponding relation of the gap marker of link identification and broadcast channel respectively in optical line terminal and change of medium unit.

So as to which the centering of be stored with optical line terminal and change of medium unit link identification and gap marker is used to inquire about.

Pass through the network characteristic according to coaxial network unit, multiple coaxial network units are grouped, the close coaxial network unit of network characteristic is divided into same group, message transmissions are carried out to these coaxial network units using same broadcast channel and corresponding transfer resource, the utilization rate to transfer resource can not only be improved, and due to allocation of transmission resources need not be distinguished for each coaxial network unit, advantageously reduce the expense of signaling.

Ii A, broadcast channel B and broadcast channel C are led in shown broadcast as shown in Figure 5 a to 5 c, it can include one or more coaxial network units in each broadcast channel, and it can may belong to multiple broadcast channels including the coaxial network unit of identical coaxial network unit, i.e., one in different broadcast channels.Each broadcast channel is that correspond to corresponding modulating-coding parameter.Shown in Fig. 5 a to Fig. 5 c is the dividing mode of three kinds of different transfer resources.Fig. 5 a are the modes of frequency division, i.e., divide the transfer resource of physical layer from frequency, form multiple frequency resource sections, and each frequency resource section is utilized for corresponding one group of coaxial network unit；Fig. 5 b are the modes of time-division, i.e., divided the transfer resource of physical layer from the time, form multiple periods, and each period is utilized for corresponding one group of coaxial network unit；Frequency division when Fig. 5 c are, is divided, forming frequency and time resource block in two dimensions of frequency and time, and each resource block is used to be utilized for one group of coaxial network unit and broadcast channel.

Fig. 6 a are the schematic diagram of the protocol hierarchy of EPOC systems provided in an embodiment of the present invention, and Fig. 6 b are the schematic diagram of another protocol hierarchy of EPOC systems provided in an embodiment of the present invention.

As shown in Fig. 6 a to Fig. 6 b, the physical layer of change of medium unit includes the physical layer towards optical fiber domain With the physical layer towards coaxial domain.Physical layer towards optical fiber domain includes a Physical Coding Sublayer

(Physical Coding Sublayer, PCS), a physical medium additional sub-layer（Physical Medium Attachment, PMA) and a physical medium associated sub-layer (Physical Medium Dependent, PMD).Wherein, FEC coding and decoding functions can be included in PCS sublayers, or FEC coding and decoding functions can be by setting special sublayer to be realized, specifically in various embodiments of the present invention, described PCS sublayers refer both to include the PCS sublayers of FEC coding and decoding functions, in other words, the FEC coding and decoding functions in various embodiments of the present invention in physical layer are realized in PCS sublayers.

Physical layer towards coaxial domain has two kinds of implementations, one kind is as shown in Figure 6 a, including multiple PCS sublayers and respectively corresponding multiple PMA sublayers and multiple PMD sublayers, it is another as shown in Figure 6 b, including multiple PCS sublayers and a corresponding PMA sublayer and PMD sublayers.Every group of PCS sublayer, PMA sublayers and PMD sublayers shown in Fig. 6 a are corresponding with a broadcast channel, can be applied in the application scenarios of frequency division as shown in Figure 5 a；Each PCS sublayers shown in Fig. 6 b are corresponding with a broadcast channel respectively, and multiple broadcast channels share a PMA sublayer and a PMD sublayer, can apply the time-division as shown in Fig. 5 b or Fig. 5 c or when frequency division application scenarios in.

Change of medium unit is still based on the processing mode in EPON agreements to the processing of data in the PCS sublayers, PMA sublayers and PMD sublayers towards optical fiber domain；And then including multiple PCS sublayers arranged side by side towards coaxial domain, different broadcast channels are correspond to respectively.

What it is on PCS upper stratas is Reconciliation Sublayer（Reconcilation Sublayer, RS) or distribution sublayer (Distribution Sublayer), coordination/distribution (RECONCILIATION/DISTRIBUTION) sublayer is expressed as in Fig. 6 a and Fig. 6 b.The sublayer for distributing sublayer to increase newly in various embodiments of the present invention, in the case of RS sublayers and distribution sublayer are simultaneous, distribution sublayer is between RS sublayers and PCS sublayers.

Unrelated 10,000,000,000 interface of medium can be passed through between RS sublayers or distribution sublayer and PCS sublayers（10 Gigabit Media Independent Interface, XGMII) interface connection, XGMII interfaces are physical interfaces, can be connected respectively with multiple PCS sublayers by multiple logic interfacings on the physical interface.

RS sublayers or gap marker of the distribution sublayer in received message are searched according to logical identifier in message and determine gap marker, data frame in message is sent to the corresponding PCS sublayers of gap marker, data frame is sent to again by corresponding PMA sublayers and PMD sublayers by PCS sublayers, is modulated using corresponding modulating-coding parameter.

If in addition, coaxial network unit can support multiple broadcast channels, in the physics of coaxial network unit Layer can also set multiple PCS sublayers, PMA sublayers and PMD sublayers, or multiple PCS sublayers and shared a PMA sublayer and a PMD sublayer.

Be stored with the corresponding relation of transfer resource and broadcast channel respectively in optical line terminal and change of medium unit.In the case where the corresponding relation of broadcast channel and one or more coaxial network units has been set up, be each broadcast channel distribution transfer resource number, depending on the data volume transmitted in the broadcast channel number.

The operating procedure being allocated to transfer resource, can be carried out on optical line terminal, can also be carried out on change of medium unit.

One kind is that optical line terminal distributes the transfer resource for transmitting the message according to the size of the data volume of the message；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the change of medium unit.

Another to be, change of medium unit distributes the transfer resource for transmitting the message according to the size of the data volume of the message；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the optical line terminal.

Specifically, after primary distribution can be carried out to the distribution of transfer resource, i.e., being transmitted using the method for salary distribution using transfer resource to message, the distribution to transfer resource can also be updated periodically.Wherein, the cycle of renewal can be default time span, will can also every time receive message as the trigger condition for redistributing transfer resource.

The corresponding relation between gap marker and transfer resource in various embodiments of the present invention, it can be specifically the static resource that optical line terminal or change of medium unit are distributed in initialization procedure for broadcast channel, the static resource can occupy fixed frequency and subcarrier, or fixed OFDM symbol is occupied in periodicity time resource, or occupy fixed resource block；Can also be that change of medium unit distributes resource according to demand in real time；It can also be optical line terminal and distribute resource for broadcast channel in real time and the resource allocation information is sent to change of medium unit.

If the distribution to transfer resource is completed by optical line terminal, then optical line terminal is after message is received, not only according to the destination address carried in message, find corresponding broadcast channel, deposited because the form of data to be sent broadcast channel queue is carried out Slow by each broadcast channel, therefore according to the size of the data volume of message in different broadcast channel queues, corresponding transfer resource is distributed, for the corresponding each coaxial network unit transmitting message of the broadcast channel.After the distribution to transfer resource is completed, using the corresponding relation of the transfer resource set up and the gap marker of broadcast channel as transfer resource allocation result, it is sent to Change of medium unit.

If the distribution to transfer resource is completed by change of medium unit, then change of medium unit from optical line terminal after message is received, not only according to the gap marker of the broadcast channel carried in message, it is determined that needing the broadcast channel utilized, always according to the size of the data volume of message, distribute corresponding transfer resource, it is the corresponding each coaxial network unit transmitting message of the broadcast channel after the distribution to transfer resource is completed, it regard the corresponding relation of the transfer resource set up and the gap marker of broadcast channel as transfer resource allocation result, it is sent to optical line terminal.

So as to be used to inquire about in the logical operating procedure of be stored with optical line terminal and change of medium unit transfer resource and broadcast channel.

In various embodiments of the present invention, for single message, change of medium unit needs intactly to be modulated and sent using the corresponding modulation coding mode of a broadcast channel, is unable to single message carrying out burst and is transmitted using multiple broadcast channels.

Also be stored with gap marker and the corresponding relation of transmission rate in various embodiments of the present invention, in optical line terminal, and the foundation of the corresponding relation can be completed by following operating procedure.

Optical line terminal obtains the throughput of each broadcast channel, that is MAC layer speed, it is symbol, frame and forward error correction (the Forward Error Correction for eliminating physical layer, the net rate after expense produced by redundancy such as FEC), the transmission rate described in various embodiments of the present invention is the net rate.The corresponding relation of the gap marker of a broadcast channel respectively with net rate is preserved in optical line terminal, so as to, optical line terminal is transmitted to the message for needing to send by broadcast channel using the corresponding net rate of the broadcast channel, or smaller speed.

Fig. 7 a are the structural representation of optical line terminal provided in an embodiment of the present invention, as shown in Figure 7a, and the optical line terminal includes query unit 11 and transmitting element 12.

Query unit 11, for the link identification according to corresponding to the message received, inquires about the gap marker of broadcast channel corresponding with the link identification；

Transmitting element 12, for the gap marker and the link identification to be carried in the message, with the corresponding transmission rate of the broadcast channel, the message is sent to change of medium unit, so that the change of medium unit utilizes the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, signal after being modulated, and the signal after the modulation is sent to the corresponding coaxial network unit of the link identification through the transfer resource, with The coaxial network unit is utilized the corresponding modulating-coding parameter of the gap marker, demodulating and decoding goes out data bit on the transfer resource, and according to the link identification from the data bit, obtain target just blunt text.

Further, the transmitting element 12 is with the corresponding transmission rate of the broadcast channel, and the message is sent into the change of medium unit is specially：

Fig. 7 b are the structural representation of another optical line terminal provided in an embodiment of the present invention, as shown in Figure 7b, and the optical line terminal also includes processing unit 13.

The processing unit 13, for the size according to the literary data volume, distributes the transfer resource for transmitting the message；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the change of medium unit and/or the coaxial network unit.

Further, the broadcast channel is used to use corresponding modulating-coding parameter, and the blunt text is sent at least one coaxial network unit on corresponding transfer resource.

Fig. 7 c are the structural representation of another optical line terminal provided in an embodiment of the present invention, as shown in Figure 7 c, and the optical line terminal includes processor 51, memory 52, bus 53 and communication interface 54.Connected between processor 51, memory 52 and communication interface 54 by bus 53 and complete mutual communication.

Processor 51 may be monokaryon or multinuclear CPU（Central Processing Unit, CPU), or be specific integrated circuit（Application Specific Integrated Circuit, abbreviation ASIC), or to be configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 52 can be high-speed RAM memory, or nonvolatile memory（Non-volatile memory), for example, at least one magnetic disk storage.

Memory 52 is used to deposit program 521.Specifically, can include program code in program 521, described program code includes computer-managed instruction.

The operation program 521 of processor 51, to perform：

The gap marker and the link identification are carried in the message, with the corresponding transmission rate of the broadcast channel, the message is sent to change of medium unit, for change of medium unit profit With the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, signal after being modulated, and the signal after the modulation is sent to the corresponding coaxial network unit of the link identification through the transfer resource, so that the coaxial network unit utilizes the corresponding modulating-coding parameter of the gap marker, demodulating and decoding goes out data bit on the transfer resource, and according to the link identification from the data bit, obtain object message.The operating procedure described in above-mentioned corresponding embodiment of the method is may refer to, here is omitted.

Fig. 8 a are the structural representation of change of medium unit provided in an embodiment of the present invention, as shown in Figure 8 a, and the change of medium unit includes receiving unit 21, acquiring unit 22, processing unit 23 and transmitting element 24.

Receiving unit 21, the message for receiving optical line terminal transmission.

Acquiring unit 22, for according to the message, obtaining link identification and gap marker, the gap marker is the mark of broadcast channel corresponding with the link identification.

Processing unit 23, for using the corresponding modulating-coding parameter of the gap marker, being encoded and modulated to the message in the corresponding transfer resource of the gap marker, the signal after being modulated；Transmitting element 24, for the signal after the modulation to be sent into coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, parses the message.

Further, the link identification is carried in the message that the receiving unit 21 is received；Correspondingly, the acquiring unit 22 is specifically for obtaining the link identification in the message, and according to the link identification, inquire about the gap marker of broadcast channel corresponding with the link identification, and determine the gap marker；

Or, carry the link identification and the gap marker in the message that the receiving unit 21 is received；

Correspondingly, the acquiring unit 22 is specifically for obtaining the link identification and the gap marker in the message.

Further, the processing unit 23 is additionally operable to, using the corresponding modulating-coding parameter of the gap marker, in physical layer is encoded and modulated the corresponding transfer resource of the gap marker to the message.

Further, the processing unit 23 is additionally operable to：

Receive what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to institute Network attribute is stated, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up；By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit and/or the optical line terminal are sent to.

Further, the processing unit 23 is additionally operable to：

Fig. 8 b are the structural representation of another change of medium unit provided in an embodiment of the present invention, as shown in Fig. 8 b, and the change of medium unit includes processor 61, memory 62, bus 63 and communication interface 64.Connected between processor 61, memory 62 and communication interface 64 by bus 63 and complete mutual communication.

Processor 61 may be monokaryon or multinuclear CPU（Central Processing Unit, CPU), or be specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), or to be configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 62 can be high-speed RAM memory, or nonvolatile memory（Non-volatile memory), for example, at least one magnetic disk storage.

Memory 62 is used to deposit program 621.Specifically, can include program code in program 621, described program code includes computer-managed instruction.

The operation program 621 of processor 61, to perform：

Receive the message that optical line terminal is sent；

Signal after the modulation is sent to coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, parsing

Fig. 9 a are the structural representation of coaxial network unit provided in an embodiment of the present invention, as illustrated in fig. 9, The coaxial network unit includes receiving unit 31 and processing unit 32.

Receiving unit 31, for the instruction in transfer resource allocation result for the transfer resource of receive information and the gap marker of broadcast channel, using the corresponding modulating-coding parameter of the gap marker, decoding is demodulated to the transfer resource, data bit is obtained；

Processing unit 32, for the link identification carried according to the data bit, object message is obtained from the data bit.

Fig. 9 b are the structural representation of another coaxial network unit provided in an embodiment of the present invention, as shown in Fig. 9 b, and the coaxial network unit includes processor 81, memory 82, bus 83 and communication interface 84.Connected between processor 81, memory 82 and communication interface 84 by bus 83 and complete mutual communication.

Processor 81 may be monokaryon or multinuclear CPU（Central Processing Unit, CPU), or be specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), or to be configured to implement one or more integrated circuits of the embodiment of the present invention.Memory 82 can be high-speed RAM memory, or nonvolatile memory（Non-volatile memory), for example, at least one magnetic disk storage.

Memory 82 is used to deposit program 821.Specifically, can include program code in program 821, described program code includes computer-managed instruction.

The operation program 821 of processor 81, to perform：

The link identification carried according to the data bit, object message is obtained from the data bit.The operating procedure described in above-mentioned corresponding embodiment of the method is may refer to, here is omitted.

Figure 10 a are the structural representation of optical network device provided in an embodiment of the present invention, as shown in Figure 10 a, the optical network device includes any described optical line terminal 1 in Fig. 7 a, Fig. 7 b or Fig. 7 c, and any described change of medium unit 2 in Fig. 8 a or Fig. 8 b, the change of medium unit 2 is connected with the optical line terminal 1.

Figure 10 b are the structural representation of optical network device provided in an embodiment of the present invention, as shown in fig. lob, and the optical network device includes processor 91, memory 92, bus 93 and communication interface 94.Processor 91, Connected between memory 92 and communication interface 94 by bus 93 and complete mutual communication.

Processor 91 may be monokaryon or multinuclear CPU（Central Processing Unit,

), CPU or for specific integrated circuit (Application Specific Integrated Circuit, referred to as

), ASIC or for be configured to implement the embodiment of the present invention one or more integrated circuits.Memory 92 can be high-speed RAM memory, or nonvolatile memory（Non-volatile memory), for example, at least one magnetic disk storage.

Memory 92 is used to deposit program 921.Specifically, can include program code in program 921, described program code includes computer-managed instruction.

The operation program 921 of processor 91, to perform the operating procedure in above-mentioned optical line terminal and change of medium unit.The operating procedure described in above-mentioned corresponding embodiment of the method is may refer to, here is omitted.

Figure 11 is the structural representation of the message transfer system provided in an embodiment of the present invention across medium, as shown in figure 11, this is across any described change of medium unit 2 in any described optical line terminal 1, Fig. 8 a or Fig. 8 b during the blunt literary Transmission system of medium is including Fig. 7 a, Fig. 7 b or Fig. 7 c, and the coaxial network unit 3 described in Fig. 9 a or Fig. 9 b.Communicated to connect between the optical line terminal 1, at least one described change of medium unit 2 and at least one described coaxial network unit 3.In addition it should be noted that the optical line terminal via change of medium unit with the coaxial network unit while being connected, fiber distribution network directly can also be passed through（Optical Distribution Network, ODN) connected with optical network unit (Optical Network Unit, ONU).

Specifically, the method that the message transfer system across medium in the embodiment of the present invention is transmitted to message, may refer to the operating procedure described in above-mentioned corresponding embodiment of the method, here is omitted.

Figure 12 is the structural representation of another message transfer system across medium provided in an embodiment of the present invention, as shown in figure 12, this includes the optical network device 4 described in Figure 10 a or Figure 10 b, and any described coaxial network unit 3 in Fig. 9 a or Fig. 9 b across the message transfer system of medium.Communicated to connect between the optical network device 4 and at least one described coaxial network unit 3.In Figure 12 described embodiments, the output signal of optical network device is to be carried on coax network or hybred fiber-coax（Hybrid Fiber Coax, HFC) online physical layer signal, such as ofdm signal.

Specifically, the method that the message transfer system across medium in the embodiment of the present invention is transmitted to message, may refer to the operating procedure described in above-mentioned corresponding embodiment of the method, here is omitted. Message transmitting method provided in an embodiment of the present invention across medium, apparatus and system, multiple coaxial network units are given one or more groups in advance, across medium change of medium unit receive optical line terminal transmission message after, the corresponding modulation system of gap marker in message is modulated to the message, and the message after modulation is sent to the corresponding one group of coaxial network unit of the gap marker, object message is obtained by link identification of the coaxial network unit in message, so as to by the change of medium unit it is real one of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can be completed by the related hardware of programmed instruction, foregoing program can be stored in a computer read/write memory medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.

Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part or all technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

Claims

1st, a kind of message transmitting method across medium, it is characterised in that including：

Receive the message that optical line terminal is sent；

According to the message, link identification and gap marker are obtained, the gap marker is the mark of broadcast channel corresponding with the link identification；

Using the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, the signal after being modulated；

Signal after the modulation is sent to coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, the message is parsed.

2nd, the message transmitting method according to claim 1 across medium, it is characterised in that carry the link identification in the message；

Correspondingly, it is described according to the message, obtain link identification and gap marker is specially：The link identification in the message is obtained, and according to the link identification, inquires about the gap marker of broadcast channel corresponding with the link identification, and determines the gap marker；

Or, the link identification and the gap marker are carried in the message；

Correspondingly, it is described according to the message, obtain link identification and gap marker is specially：Obtain the link identification and the gap marker in the message.

3rd, the message transmitting method according to claim 1 across medium, it is characterized in that, it is described to utilize the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker specially：

Using the corresponding modulating-coding parameter of the gap marker, in physical layer is encoded and modulated the corresponding transfer resource of the gap marker to the message.

4th, the message transmitting method according to claim 1 across medium, it is characterised in that methods described also includes：

Receive what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to the network attribute, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up；

By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit and/or the optical line terminal are sent to. 5th, the message transmitting method according to claim 1 across medium, it is characterised in that methods described also includes：

According to the size of the data volume of the message, the transfer resource for transmitting the message is distributed；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；

The transfer resource allocation result is sent to the coaxial network unit.

6th, according to any described message transmitting method across medium in claim 1-5, it is characterised in that the message that the reception optical line terminal is sent is specially：

Receive the message that the optical line terminal is sent with the transmission rate of the corresponding broadcast channel of the gap marker.

7th, a kind of change of medium unit, it is characterised in that including：

Receiving unit, the message for receiving optical line terminal transmission；

Acquiring unit, for according to the message, obtaining link identification and gap marker, the gap marker is the mark of broadcast channel corresponding with the link identification；

Processing unit, for using the corresponding modulating-coding parameter of the gap marker, being encoded and modulated to the blunt text in the corresponding transfer resource of the gap marker, the signal after being modulated；

Transmitting element, for the signal after the modulation to be sent into coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, parses the message.

8th, change of medium unit according to claim 7, it is characterised in that carry the link identification in the message that the receiving unit is received；

Correspondingly, the acquiring unit specifically for：

The link identification in the message is obtained, and according to the link identification, inquires about the gap marker of broadcast channel corresponding with the link identification, and determines the gap marker；

Or, carry the link identification and the gap marker in the message that the receiving unit is received；

Correspondingly, the acquiring unit specifically for：

Obtain the link identification and the gap marker in the message.

9th, change of medium unit according to claim 7, it is characterised in that the processing unit specifically for： Using the corresponding modulating-coding parameter of the gap marker, in physical layer is encoded and modulated the corresponding transfer resource of the gap marker to the message.

10th, change of medium unit according to claim 7, it is characterised in that the processing unit is additionally operable to：

Receive what the coaxial network unit was sent, the network attribute in predeterminated frequency resource；According to the network attribute, the corresponding relation of the link identification of the coaxial network unit and the gap marker of broadcast channel is set up；By link identification and the corresponding relation of the gap marker of broadcast channel, the coaxial network unit and/or the optical line terminal are sent to.

11, change of medium unit according to claim 7, it is characterised in that the processing unit is additionally operable to：

According to the size of the data volume of the message, the transfer resource for transmitting the message is distributed；The corresponding relation set up between the transfer resource and the gap marker, obtains transfer resource allocation result；The transfer resource allocation result is sent to the coaxial network unit.

12nd, according to any described change of medium unit in claim 7-1 1, it is characterised in that the receiving unit specifically for：

Receive the message that the optical line terminal is sent with the transmission rate of the corresponding broadcast channel of the gap marker.

13rd, a kind of change of medium unit, it is characterised in that including：

Processor, memory, bus and communication interface, the processor, the memory and the communication interface are connected by the bus and complete mutual communication；

The memory, for depositing program；

The processor, for performing described program；

Wherein, described program is used for the message for receiving optical line terminal transmission；

According to the message, link identification and gap marker are obtained, the gap marker is the mark of broadcast channel corresponding with the link identification；

Using the corresponding modulating-coding parameter of the gap marker, the message is encoded and modulated in the corresponding transfer resource of the gap marker, the signal after being modulated；

Signal after the modulation is sent to coaxial network unit corresponding with the link identification through the transfer resource, so that the coaxial network unit utilizes the gap marker and the link identification, the message is parsed. 14th, a kind of message transfer system across medium, it is characterised in that including optical line terminal, coaxial network unit, and the change of medium unit described in change of medium unit or claim 13 as described in any in claim 7-12；Communicated to connect between the optical line terminal, the change of medium unit and the coaxial network unit.