WO2011057545A1 - 传输多路业务的方法和装置 - Google Patents
传输多路业务的方法和装置 Download PDFInfo
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- WO2011057545A1 WO2011057545A1 PCT/CN2010/078467 CN2010078467W WO2011057545A1 WO 2011057545 A1 WO2011057545 A1 WO 2011057545A1 CN 2010078467 W CN2010078467 W CN 2010078467W WO 2011057545 A1 WO2011057545 A1 WO 2011057545A1
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000003491 array Methods 0.000 claims abstract description 40
- 230000010365 information processing Effects 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 20
- 230000006978 adaptation Effects 0.000 abstract description 17
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000013507 mapping Methods 0.000 description 28
- 230000008569 process Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000009432 framing Methods 0.000 description 8
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
- H04J3/1617—Synchronous digital hierarchy [SDH] or SONET carrying packets or ATM cells
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0064—Admission Control
- H04J2203/0067—Resource management and allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0064—Arbitration, scheduling or medium access control aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
- H04Q2011/0092—Ring
Definitions
- the present invention relates to the field of optical transmission technologies, and in particular, to a method and apparatus for transmitting multiple services. Background technique
- GPON Gigabit Passive Optical Network
- TDM Time Division Multiplex and Multiplexer
- the nodes on the ring network are divided into N nodes and S nodes.
- the N nodes are common decentralized service access nodes.
- the S nodes are also called the primary nodes.
- Any node can directly go up and down the traditional TDM, Ethernet data services, etc., and can also provide PON (Passive Optical Network) tributary interface, and also provide 10GE (Gigabit Ethernet, Gigabit Ethernet) at the S node. Wait for the uplink service interface.
- FB Fixed-bandwidth services
- TDM Time Division Multiple Access
- SDH Serial Digital Hierarchy
- SONET Synchronous Optical Network
- BE Band Effort
- the network is a converged network, and the aggregation node is an S node, which implements dual backup.
- the network is a peer-to-peer
- TDM Time Division Multiple Access
- SDH/SONET Secure Digital Network
- the network includes a three-layer structure of service adaptation layer, channel layer and physical layer, with few layers, simple circuit processing, high reliability, cost and power consumption, and simple implementation.
- the service adaptation layer is responsible for encapsulating and decapsulating various service entities according to the format of the E-GEM (Enhanced GPON Encapsulation Method) frame, and requires specifying a unique identifier for each service in the network.
- E-GEM Enhanced GPON Encapsulation Method
- T-CONT Transmission Container
- the physical layer combines all T-CONT frames into TC (Transmission Convergence) frames, ie physical layer frames, plus physical layer overhead, including frame header synchronization, management overhead and bandwidth maps, to form GTH (Generic Transport). Hierarchy, universal transport system), so that the communication and management of the N nodes in the network can be realized, and the allocated time slots of each T-CONT can be easily adjusted to realize dynamic bandwidth adjustment.
- TC Transmission Convergence
- GTH Generic Transport
- the process of the DBA is as follows: Each N node detects, counts, and reports the DBR (Dynamic Bandwidth Requirement) information of each service port of the local node to the master node. According to the existing bandwidth resources on the ring, the service type of each node, the priority, etc., the judgment and calculation are performed. Finally, the bandwidth allocation information of each node is sent to each node, and each node transmits data according to the allocated bandwidth.
- the bandwidth allocation information refers to a BWmap (Bandwidth Map), and each node can assemble the size and number of T-CONT frames according to the bandwidth map.
- a method of transmitting a multi-path service comprising:
- a device for transmitting a multi-path service comprising:
- a receiving module configured to receive bandwidth information of a transfer container TCONT of all nodes; an array of n, each array includes a specified number of time slots, and any two adjacent time slots in each array are n intervals And n is a natural number, and according to the TCONT bandwidth information of all the nodes, calculating a slot position of an array occupied by the TCONT of each node in the payload area;
- a frame processing module configured to insert a TCONT of the local node into a corresponding time slot according to a slot position of an array occupied by a TCONT of the local node in the payload area, to obtain a GTH, starting from a specified frame. Frame and transmit the GTH frame.
- the foregoing technical solution provided by the embodiment of the present invention can uniformly allocate time slots, can implement asynchronous adaptation of multiple services, and strictly guarantee bandwidth of different types of services, and simultaneously support flexible adjustment of service bandwidth, and reduce complexity of logic implementation. degree.
- the service adopts slot interleave multiplexing instead of the block TCONT structure, the delay time for the node to separately send services to the working channel and the protection channel is greatly shortened, and the cache is reduced. It also does not cause the dual-issue process to fail.
- the lines of different rates are multiplexed, it can reduce the need to map low-rate line services to high-speed lines. Cache and delay, even for FB-type services, can be well interleaved and reused, making full use of the bandwidth fragmentation left after some FB-type services are deleted, thereby improving the bandwidth utilization of the line.
- FIG. 1 is a schematic diagram of a network architecture for transmitting a multi-path service according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a format of an E-GEM frame according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a format of a TCONT frame according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a GTH frame according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of a typical application scenario of a technical solution provided by an embodiment of the present invention.
- FIG. 6 is a flowchart of a method for transmitting a multi-path service according to an embodiment of the present invention
- FIG. 7 is a schematic diagram of slot division of a GTH frame payload area according to an embodiment of the present invention.
- FIG. 9 is a schematic diagram of a specific application scenario of a transmission multi-path service according to an embodiment of the present invention
- FIG. 10 is a schematic diagram of a slot mapping table obtained by each node in the application scenario of FIG. 9;
- FIG. 11 is a schematic diagram of a service transmission time slot of the application scenario of FIG. 9 after the K+1th frame;
- FIG. 12 is a structural diagram of an apparatus for transmitting a multi-path service according to an embodiment of the present invention.
- FIG. 13 is a schematic diagram of a specific implementation of an apparatus for transmitting a multi-path service according to an embodiment of the present invention.
- the embodiment of the invention provides a method for transmitting a multi-path service, including: Receive bandwidth information of TCONTs of all nodes;
- the local node's TCONT is interleaved into the corresponding time slot to obtain a GTH frame and transmit the GTH frame.
- the primary node in the embodiment of the present invention refers to an S node in the network, and the local node may be an S node or an N node, and the N node refers to a normal Normal node.
- TCONT is the control object of bandwidth allocation.
- the master node can allocate one or more TCONTs to an N node.
- the N node uses TCONT to transmit services in the network.
- the services of the embodiments of the present invention include, but are not limited to, the TDM service, the SDH/SONET/ATM service, the Ethernet data service, and the like, which are not specifically limited in the embodiment of the present invention.
- fixed bandwidth services such as: TDM services or data leased lines services
- guaranteed bandwidth services such as video services
- best-effort services such as the above-mentioned network services.
- the network architecture for transmitting multiple services in the embodiment of the present invention may be as shown in FIG. 1.
- the network layer of the network includes: a physical layer, a channel layer, and a service adaptation layer, which respectively correspond to GTH frames, TCONT frames, and E-GEM frames.
- the format of the E-GEM frame is shown in Figure 2, including the frame header, address identifier, and payload data.
- the frame header includes four fields: payload length, service identifier, frame type, and header check.
- the address identifier is divided into the target and the source.
- the format of the TCONT frame is shown in Figure 3, including the frame header, channel overhead, and payload data.
- the frame header includes payload length, extension field and header check.
- the channel overhead includes a channel identifier, a BIP checksum, and a monitoring field, and the monitoring field includes a REI (Remote Error Indication), an RDI (Remote Defect Indication), and a DBR.
- REI Remote Error Indication
- RDI Remote Defect Indication
- DBR DBR
- the payload data area is used to carry E-GEM frames and consists of multiple E-GEM frames.
- FIG. 4 shows the structure of a GTH frame according to an embodiment of the present invention.
- the GTH frame includes: a PCB (Physical Control Block) domain and a payload area.
- the TC frame is carried in the payload area.
- the PCB domain includes: Header, OAM, and BWPL (BWMAP PLend, Bandwidth Map Payload Length Field). Head
- the part includes: PSync (Physical Synchronization), non-scrambling, length 4 bytes, content can be 0xB6AB31E0.
- OAM Opation, Administration, and Maintenance
- Ident superframe indication domain
- PLO AM Physical Layer OAM, physical layer operation and maintenance management
- BIP Bit Interleaved Parity verification
- switching Protocol bytes Kl and K2, Ml and SI The Ident includes: FECind (Forward Error Correction) indication, Rev (Reserved Field), and Superframe Counter Super-frame for GTH frames.
- Ml includes: REI, RDI, and Rev ( Reserved, reserved domain).
- the BWPL includes: two identical Plend ( Payload Length) fields and one BWMAP Bandwidth Information field.
- the PLend includes: a length BWMAP Length of the bandwidth information and a check CRC for the length.
- the BWMAP includes: bandwidth information of N TCONTs, bandwidth information from TCONT1 to bandwidth information of TCONTN.
- the bandwidth information of each TCONT includes: Alloc ID (Allocation Idendifer), TCONT bandwidth Width, Flag, and CRC (Cyclic Redundancy Code) for TCONT bandwidth information.
- Alloc IDs include: Node ID and Seq ID.
- Flags include: Rev (Reserved Field), Forward Error Correction FEC for TCONT Bandwidth Information, DBRu, and Loopback Flag Loopback.
- the service data is encapsulated with the header and the address identifier according to the format shown in FIG. 2 to obtain an E-GEM frame.
- the E-GEM frame is used as a data portion, and the packet is encapsulated according to the format shown in FIG. 3.
- Part and channel overhead get the TCONT frame; use the TCONT frame as the data part, and package the PCB according to the format shown in Figure 4, then get the GTH frame.
- the ring network includes a master node (S node) and N nodes, such as S1 and S2, Nl, N2, N3, N4, and N5. Any node in the ring network can directly access various services.
- the S node can be connected to the BRAS (Broadband Remote Access Server) in the upper layer network.
- the N node can connect different areas and networks to transmit various types of services.
- this embodiment provides a method for transmitting a multi-path service, which specifically includes:
- the local node receives the bandwidth information of the TCONT of all the nodes allocated by the master node.
- the local node in this embodiment refers to any N node in the network.
- each N node in the network periodically reports the DBR information to the master.
- the main content of the DBR information is the service type of the local node and the bandwidth information that is desired to be obtained.
- the master node uses the DBA algorithm on the transmitting side according to the resource and the service type, and allocates the bandwidth of the TCONT to each node, and Issued to each node.
- the primary node allocates the bandwidth of the TCONT to each node according to the DBR reported by each node in the network.
- the bandwidth of the TCONT may be allocated to each node by an independent bandwidth allocation device, or The bandwidth of the TCONT is allocated to each node in the network by the BRAS having the bandwidth allocation management capability of the entire network.
- the local node divides the payload area of the GTH frame into an array of a preset number n, each array includes a specified number of time slots, and any two adjacent time slots in each array are all n. , n is a natural number;
- the number n of arrays in the embodiment of the present invention is preset, and the same number of arrays is applied to each node to divide the payload area, including the master node and the N node.
- the number of slots included in each array can be set as needed.
- the number of slots included in any two arrays may be the same or different.
- 1 ⁇ the total length of the time slot of the payload area can be set, and n> the number of service channels.
- each array contains the same number of time slots, and the number is even.
- the payload area of the GTH frame is divided into n arrays, each of which contains two time slots, and the order of the time slots in each array is: 1st time slot, 2nd A time slot, and the interval between the two time slots is n time slots.
- the order of the n arrays is arranged in order: the first array, the second array, and the nth array, thereby obtaining the slot sequence shown in FIG.
- the payload area in the figure can be divided into 2n time slots.
- the method further includes: arranging n arrays in the payload area according to a preset rule to obtain a sequence of time slots in the payload area, as follows:
- the preset number n 2 L , L is the number of bits occupied by the number n when represented by a binary number, L is a natural number, and L bits are calculated according to a binary reverse carry method, and n values are obtained, and the n numbers are obtained.
- the value is arranged as an array of n arrays, and the time slots corresponding to the n arrays in the payload area are arranged according to the arrangement order to obtain the sequence of time slots in the payload area;
- the n numerical values represent the serial number of the array, and the order of the n arrays is arranged according to the order of the n serial numbers.
- the time slots corresponding to the n arrays are arranged in the order of the natural numbers, and the time slots corresponding to the n arrays are arranged in the order of the Gray code.
- the present invention does not specifically limit this.
- the above binary reverse carry method is adopted.
- the time slots are sorted, and the principle is as follows: Arrange L bits from high to low, using bw, b L-2 , ... bj , b.
- the initial value is taken as 0, and then the binary increment is 1 from the highest bit b w , the carry to the lower bit, the carry to the lower bit, ..., and finally to the lower b. carry.
- the binary increment is 1 from the highest bit b w , the carry to the lower bit, the carry to the lower bit, ..., and finally to the lower b. carry.
- 2 L or n values can be obtained, and the n values are expressed in decimal as the arrangement number of the n arrays.
- the three bits are binary reversed and then get eight decimal numbers: 0, 4, 2, 6, 1, 5, 3, and 7.
- This value is used as the slot position number of the 8 arrays, due to the time of the payload area.
- the slot position is counted from 1 and has a total of 16 time slots. Therefore, the above 8 numbers starting from 0 are sequentially converted into sequence numbers starting from 1, that is, each value is incremented by 1, and the time slot in Table 1 is obtained.
- the position number, the eight serial numbers respectively correspond to the first array to the eighth array, thereby obtaining the arrangement number of the eight arrays: the first array is ranked first, and the second array is ranked fifth.
- the third array is ranked in the third and fourth arrays in the seventh, ..., the seventh array is in the fourth, and the eighth array is in the eighth.
- the time slot distribution obtained after sorting is as shown in FIG. 8.
- the eight arrays are sorted in the above order, and the first time slot in each array is separated from the second time slot by 8 time slots.
- the master node sends a notification, which may specifically adopt a method of sending a preset identifier, such as sending FLAG-A, indicating that the local node has completed the above calculation process.
- the main node may be notified in other ways, which is not specifically limited in the embodiment of the present invention.
- the master node after receiving the notification from each node, the master node sends an indication message to each node, which is used to indicate that each node starts framing according to the calculated slot position from the specified frame.
- the indication information may be in various forms, including but not limited to: the identification information, the specified frame information, and the like, which are not specifically limited in the embodiment of the present invention.
- the local node receives the indication information sent by the primary node, and determines a corresponding frame according to the indication information.
- the local node after receiving the indication information, the local node first updates the local slot mapping table, and confirms a corresponding frame, where the frame is used by the local node to determine when to start the frame according to the updated slot mapping table. Previously, interleaving multiplexing was performed according to the existing slot mapping table.
- the local node saves two slot mapping tables, the current slot mapping table Cur and the next slot mapping table Next.
- Cur is the overhead slot mapping table, and Next is empty.
- the local node completes the calculation in 705
- the obtained slot mapping table is saved in Next.
- the local node still performs according to the table in Cur.
- Interpolation multiplexing after receiving the instruction of the master node, the table in Next is updated to Cur, and then the table in Cur is used for interpolating multiplexing, that is, the table calculated by 705 is interpolated and multiplexed.
- the local node calculates the new slot mapping table again, it still saves it to Next, and replaces the original table in Next, waiting for the instruction of the master node to perform the next update.
- the local node starts from the corresponding frame, inserts a TCONT of the local node into the corresponding time slot according to the slot position of the array occupied by the TCONT of the local node in the payload area, obtains a GTH frame, and transmits the GTH. frame.
- the process in which the local node inserts the TCONT into the time slot of the payload area may be as follows: In all TCONTs of the local node, starting from the first TCONT, using the above slot mapping table, n arrays All time slots in the first array are assigned to the first TCONT in turn, if The time slots of an array are allocated, and then the time slots of the second and third arrays are used for allocation until the time slot of the first TCONT is allocated, and then the time slot is allocated to the second TCONT; After the array is allocated to the first TCONT, and there are remaining time slots, it continues to be used to allocate time slots for the second TCONT; and so on, each TCONT is allocated from the last TCONT array slot. A time slot begins to be allocated until all TCONT allocation time slots are completed.
- the process of transmitting the multi-path service in this embodiment is specifically described by taking the application scenario shown in FIG. 9 as an example.
- the ring network has a primary node S node and two N nodes, N 1 and N2.
- the N1 node has the service TCONT 1
- the N2 node has the service TCONT2
- the N1 and N2 report the DBR to the S node respectively.
- the S node and the N1 and N2 nodes use the preset DBA algorithm to calculate the slot position of each node's TCONT in the payload area, respectively obtain and save a slot mapping table, and the slot mapping table obtained by all nodes is the same.
- the preset DBA algorithm refers to the above-described binary reverse carry method in this embodiment. Assuming that the line payload area length is 16 time slots, divided into 8 arrays, each array has 2 time slots, each node uses the binary reverse carry method to obtain the sequence of time slot positions as shown in FIG. Each node determines the location of its own TCONT in the sequence of time slots based on the bandwidth of its own TCONT.
- the N1 node has a TCONT1 bandwidth of 8, and occupies 8 time slots and is allocated to the payload area.
- the occupied time slots are: the first time slot of the first array, and the first time of the third array. Time slot, the first time slot of the second array, the first time slot of the fourth array, the second time slot of the first array, the second time slot of the third array, the second time of the second array Gap, the second time slot of the fourth array.
- the N2 node has a TCONT2 bandwidth of 4, and then occupies 4 time slots and is allocated to the payload area.
- the occupied time slots are: the first time slot of the fifth array, the first time slot of the sixth array , the second time slot of the fifth array, the second time slot of the sixth array.
- a slot mapping table as shown in FIG. 10 can be obtained.
- N1 and N2 respectively report the FLAG-A flag to the S node, and the S node sends the flag Tu in the Kth frame after receiving, indicating that the two nodes are in the next frame, that is, the K+1 frame according to the above.
- the slot map is framing.
- the N1 and N2 nodes respectively transmit and receive TCONT1 and TCONT2 according to their saved slot mapping table in the next frame, ie, the K+1th frame.
- the GTH frame format on the loop starting from the K+1th frame is as shown in FIG.
- the N1 node interpolates TCONT1
- the obtained time slot sequence is as shown in the lower part
- the time slot shaded time slot is the time slot occupied by TCONT1
- the N2 node is in the time slot sequence.
- the obtained time slot sequence is shown in the figure above
- the cross-hatched time slot is the time slot occupied by TCONT2, and finally transmitted to the S node, so that the transmission of multiple services can be realized.
- the number of time slots can ensure that the output interleaving of the output can be optimal.
- the method for transmitting a multi-path service can uniformly allocate time slots, can implement asynchronous adaptation of multiple services, and strictly guarantee the bandwidth of different types of services, and at the same time support flexible adjustment of service bandwidth, and reduce the bandwidth.
- Logic implementation complexity since the service adopts slot interleave multiplexing instead of the block TCONT structure, the delay time for the node to separately send services to the working channel and the protection channel is greatly shortened, and the cache is reduced. It also does not cause the dual-issue process to fail.
- the buffers and delays required for mapping low-rate line services to high-speed lines can be reduced. Even FB-type services can be very good.
- the interleaving and multiplexing are implemented to make full use of the bandwidth fragment left after some FB services are deleted, thereby improving the bandwidth utilization of the line. Referring to FIG. 12, this embodiment provides an apparatus for transmitting a multi-path service, including:
- the receiving module 1201 is configured to receive bandwidth information of the transmission container TCONT of all nodes.
- the bandwidth information processing module 1202 is configured to divide the payload area of the GTH frame of the universal transmission system into an array of a preset number ⁇ , and each array includes a specified The number of time slots, and any two adjacent time slots in each array are ⁇ , ⁇ is a natural number. According to the TCONT bandwidth information of all nodes, the TCONT of each node is calculated in the GTH frame payload area. The slot position of the occupied array;
- the frame processing module 1203 is configured to insert a TCONT of the local node into the corresponding time slot according to the slot position of the array occupied by the TCONT of the local node in the payload area, to obtain a GTH frame and transmit the data from the specified frame.
- the GTH frame is configured to insert a TCONT of the local node into the corresponding time slot according to the slot position of the array occupied by the TCONT of the local node in the payload area, to obtain a GTH frame and transmit the data from the specified frame.
- the GTH frame is configured to insert a TCONT of the local node into the corresponding time slot according to the slot position of the array occupied by the TCONT of the local node in the payload area
- the bandwidth information processing module 1202 is further configured to: before calculating the time slot position of the TCONT of each node in the payload area, arrange the time slots corresponding to the n arrays in the payload area according to a preset rule, and obtain The order of the time slots in the payload area.
- the bandwidth information processing module arranges n arrays in the payload area according to a preset rule to obtain a sequence of time slots in the payload area, which specifically includes:
- the preset number n 2 L is the number of bits occupied by the number n in binary numbers, L is a natural number;
- the n arrays in the payload area are arranged in the order of arrangement to obtain the sequence of time slots in the payload area.
- the frame processing module 1203 specifically includes:
- the indication information obtaining unit is configured to notify the master node that the local node has completed the calculation of the time slot position of the TCONT of each node in the payload area, and receives the indication information delivered by the master node;
- a frame processing unit configured to insert, according to the indication information obtained by the indication information acquiring unit, the TCONT of the local node from the corresponding frame according to the time slot position of the array occupied by the local node TCONT in the payload area Within the time slot, a GTH frame is obtained and the GTH frame is transmitted.
- FIG. 13 is a schematic diagram of a specific implementation of the above device.
- the apparatus in the figure includes a GTH demapping unit 1301, a bandwidth information processing module 1302, a TCONT de-adaptive unit 1303, a GEM de-adaptive unit 1304, a GEM adaptation unit 1305, a TCONT adaptation unit 1306, a GTH framing unit 1307, and a transmission.
- Side DBA module 1308 The foregoing apparatus provided in this embodiment may be integrated on any node in the network, including an N node and an S node.
- FIG. 13 is a schematic diagram of a specific implementation of the above device.
- the apparatus in the figure includes a GTH demapping unit 1301, a bandwidth information processing module 1302, a TCONT de-adaptive unit 1303, a GEM de-adaptive unit 1304, a GEM adaptation unit 1305, a TCONT adaptation unit 1306, a GTH framing unit 1307, and a transmission.
- the GEM adaptation unit 1305, the TCONT adaptation unit 1306, and the GTH framing unit 1307 are mainly used for the transmission process of the service, and the GTH demapping unit 1301, the TCONT de-adaptive unit 1303, and the GEM de-adaptive unit 1304 are mainly used for services.
- the receiving process, the bandwidth information processing module 1302 is the same as the bandwidth information processing module 1202 described above, and is configured to generate a current Cur slot mapping table and a next Next slot mapping table.
- the GTH de-frame unit 1301, the bandwidth information processing module 1302, the TCONT de-adaptive unit 1303, the GEM de-adaptive unit 1304, the GEM adaptation unit 1305, the TCONT adaptation unit 1306, and the GTH are included.
- the framing unit 1307 when the device is a master node device, includes a transmitting side DBA module 1308 for extracting B WMAP and DBR information from the received frame, in addition to the 1301 to 1307, and calculating all TCONTs in the network. The bandwidth is obtained.
- the traffic receiving process of the device shown in FIG. 13 is as follows: The GTH deframing unit 1301 extracts the BWMAP information from the line and allocates it to the BWMAP configuration table.
- the bandwidth information processing module 1302 calculates the slot positions of all the TCONT occupied arrays in the payload area according to the bandwidth information of all TCONTs in the BWMAP configuration table according to the method provided by the present invention, and uses the calculated result in the slot mapping table.
- the form is saved to get the Next slot mapping table, and the Cur slot map
- the shot table is a slot mapping table currently in use, and for the N node, if the indication of the master node is obtained, the Next slot mapping table is updated to the Cur slot mapping table.
- the TCONT de-adaptive unit 1303 extracts data from the corresponding time slot in turn according to the ID of the received TCONT configured in the Alloc-ID configuration table, according to the slot position of the received TCONT in the Cur slot mapping table, and then transmits the data to the GEM.
- the de-adaptation unit 1304 processes the recovered service data to complete the service reception process.
- the GTH deframing unit 1301 extracts the DBR information and transmits it to the transmitting side DBA module 1308, and the module calculates all The bandwidth of the TCONT is configured in the BWMAP configuration table, and the bandwidth of all TCONTs in the BWMAP configuration table is sent to each node in the network through the GTH framing unit 1307.
- the GTH deframing unit 1301 is in the secondary line. After extracting to BWMAP, it will be compared with the generated BWMAP configuration table for verification.
- the device shown in FIG. 13 is used as the N-node device or the master node device, and the service transmission process is as follows: The service is encapsulated and rate-matched by the GEM adaptation unit 1305, and then transmitted to the TCONT adaptation unit 1306, and The process monitors the length of the service buffer queue of the GEM adaptation unit 1305, and calculates the required bandwidth information DBR of the equivalent transmission service to report to the TCONT adaptation unit 1306.
- the TCONT adapting unit 1306 inserts the DBR information into the TCONT overhead according to the ID of the sending TCONT configured in the Alloc-ID configuration table, and then according to the slot position of the sending TCONT in the Cur slot mapping table, the carried services are sequentially It is inserted into the corresponding time slot and sent to the GTH framing unit 1307.
- the GTH framing unit 1307 After receiving the GTH overhead, the GTH framing unit 1307 generates a GTH frame and sends it to the line, thereby completing the service transmission process.
- the N-node reports the DBR information to the master node, it can be sent to the master node in the TCONT overhead mode or sent to the master node through the outband.
- the apparatus for transmitting a multi-path service can uniformly allocate time slots, can implement asynchronous adaptation of multiple services, and strictly guarantee the bandwidth of different types of services, and at the same time support flexible adjustment of service bandwidth, and reduce the bandwidth.
- Logic implementation complexity Compared with the prior art, since the service adopts slot interleave multiplexing instead of the block TCONT structure, the delay time for the node to separately send services to the working channel and the protection channel is greatly shortened, and the cache is reduced. It also does not cause the dual-issue process to fail. When the lines of different speeds are multiplexed, the buffers and delays required for mapping low-rate line services to high-speed lines can be reduced. Even FB-type services can be very good. The interleaving and multiplexing are implemented to make full use of the bandwidth fragment left after some FB services are deleted, thereby improving the bandwidth utilization of the line.
- the TCONT involved in the embodiments of the present invention is not limited to the service.
- the associated data may also include the overhead of the GTH frame.
- the overhead of the GTH frame may be regarded as a TCONT, and then interpolated and multiplexed according to the above technical solution, that is, the TCONT of the node includes the TCONT of the service. It also includes the overhead TCONT, which performs interpolated multiplexing, which can better realize the multiplexing and transmission of multi-path services and improve the efficiency of multi-channel service transmission.
- All or part of the above technical solutions provided by the embodiments of the present invention may be completed by hardware related to program instructions, and the program may be stored in a readable storage medium, and the storage medium includes: ROM, RAM, disk or CD. And other media that can store program code.
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- Data Exchanges In Wide-Area Networks (AREA)
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AU2010317239A AU2010317239B2 (en) | 2009-11-10 | 2010-11-05 | Method and apparatus for transmitting multiple services |
EP10829509.8A EP2493138B1 (en) | 2009-11-10 | 2010-11-05 | Method and apparatus for transmitting multipath service |
US13/468,807 US8824498B2 (en) | 2009-11-10 | 2012-05-10 | Method and apparatus for transmitting multiple services |
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CN2009102107958A CN102056031B (zh) | 2009-11-10 | 2009-11-10 | 传输多路业务的方法和装置 |
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CN102318362B (zh) * | 2011-06-03 | 2013-09-11 | 华为技术有限公司 | 一种无源光网络的数据发送方法及设备 |
CN104053076B (zh) * | 2013-03-11 | 2019-04-05 | 中兴通讯股份有限公司 | 一种提高带宽分配效率的方法及系统 |
CN104468406B (zh) * | 2013-09-13 | 2019-10-22 | 中兴通讯股份有限公司 | 跨主节点业务处理方法和装置 |
FR3043810B1 (fr) * | 2015-11-16 | 2017-12-08 | Bull Sas | Procede de surveillance d'echange de donnees sur un reseau de type liaison h implementant une technologie tdma |
CN107566074B (zh) | 2016-06-30 | 2019-06-11 | 华为技术有限公司 | 光传送网中传送客户信号的方法及传送设备 |
CN109478941B (zh) * | 2016-07-22 | 2020-06-26 | 华为技术有限公司 | 一种多路业务传送、接收方法及装置 |
CN108063985B (zh) | 2016-11-07 | 2020-11-17 | 中兴通讯股份有限公司 | 一种数据收发方法和装置 |
US10887395B2 (en) * | 2016-11-21 | 2021-01-05 | Ecosteer Srl | Processing signals from a sensor group |
CN109450548B (zh) * | 2018-12-14 | 2020-11-03 | 京信通信系统(中国)有限公司 | 信号链路的配置方法及数字通信设备 |
CN114520937B (zh) * | 2020-11-20 | 2023-05-09 | 华为技术有限公司 | Pon中的数据传输方法、装置和系统 |
CN115037965B (zh) * | 2022-06-10 | 2024-01-19 | 苏州华兴源创科技股份有限公司 | 基于占用协调机制的多通道数据传输方法、装置 |
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EP2493138A1 (en) | 2012-08-29 |
CN102056031B (zh) | 2013-12-04 |
US8824498B2 (en) | 2014-09-02 |
CN102056031A (zh) | 2011-05-11 |
US20120224858A1 (en) | 2012-09-06 |
AU2010317239A1 (en) | 2012-06-14 |
AU2010317239B2 (en) | 2014-02-27 |
EP2493138B1 (en) | 2014-06-04 |
EP2493138A4 (en) | 2013-06-05 |
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