CN117915227A

CN117915227A - Data transmission method, device and storage medium

Info

Publication number: CN117915227A
Application number: CN202410310352.0A
Authority: CN
Inventors: 张伟良; 陈毓锋; 方勇; 沈剑峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2024-03-19
Filing date: 2024-03-19
Publication date: 2024-04-19
Anticipated expiration: 2044-03-19
Also published as: CN117915227B

Abstract

The disclosure relates to the field of communication technologies, and in particular, to a data transmission method, a data transmission device and a storage medium, which are used for improving the problem of low uplink data transmission efficiency caused by easily increasing burst overhead. The data transmission method comprises the following steps: the main gateway sends burst frames to the optical line terminal according to the transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

Description

Data transmission method, device and storage medium

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a data transmission method, a data transmission device and a storage medium.

Background

Currently, fiber-to-the-room (fiber to the remote, FTTR) and fiber-to-the-home (fiber to the home, FTTH) are used in combination with deployed networking. In this networking manner, an optical line terminal (optical LINE TERMINAL, OLT) in the FTTH may allocate an upstream bandwidth to the master gateway and the slave gateway in FTTR, and configure a burst overhead for data synchronization in the upstream bandwidth, so that the master gateway and the slave gateway transmit upstream data in a burst mode.

However, the size of the upstream bandwidth is fixed. Under the condition that the number of the master gateway and the slave gateway is continuously increased, the proportion of burst overhead occupied in the uplink bandwidth is larger and larger, and the problem of lower uplink data transmission efficiency is easily caused.

Disclosure of Invention

The embodiment of the application provides a data transmission method, a data transmission device and a storage medium, which are used for solving the problem of lower uplink data transmission efficiency caused by easy increase of burst overhead.

In one aspect, a data transmission method is provided, applied to a primary gateway, including:

Transmitting a burst frame to the optical line terminal according to the transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In still another aspect, a data transmission method is provided, applied to an optical line terminal, including:

Receiving a burst frame sent by a main gateway according to a transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In yet another aspect, a data transmission device is provided, applied to a primary gateway, including: a transmitting module;

The sending module is used for sending a burst frame to the optical line terminal according to the transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In still another aspect, a data transmission apparatus is provided, which is applied to an optical line terminal, including: a receiving module;

The receiving module is used for receiving the burst frame sent by the main gateway according to the transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In yet another aspect, there is provided a data transmission apparatus including: a memory and a processor; the memory is coupled to the processor; the memory is used for storing instructions executable by the processor; the processor, when executing the instructions, implements the data transmission method described in any of the above embodiments.

In yet another aspect, a computer readable storage medium is provided, on which computer instructions are stored which, when run on a computer, cause the computer to implement the data transmission method described in any of the above embodiments.

In a further aspect, a computer program product is provided, comprising computer program instructions which, when executed by a processor, implement the data transmission method described in any of the embodiments above.

In the embodiment of the application, the main gateway can send burst frames to the optical line terminal through a plurality of continuous bandwidth parts configured for a plurality of gateways in the transmission bandwidth. The burst frame comprises a synchronization data block, i.e. a burst overhead for data synchronization, which occupies a first part of a first one of the plurality of bandwidth parts. And, the payload portion of the burst frame continuously occupies a second portion of the first bandwidth portion, and other bandwidth portions of the plurality of bandwidth portions, for transmitting payload data of the plurality of gateways.

Based on the above, under the condition that the uplink bandwidths configured for a plurality of gateways in the networking to which the main gateway belongs are continuous, the main gateway can transmit uplink data of the plurality of gateways to the optical line terminal through one burst frame, so that uplink burst transmission of the plurality of gateways under one burst overhead is realized. Compared with the mode that burst overhead is reserved in the bandwidth part configured by the optical line terminal for each gateway and multiple burst overheads are generated, the method and the device can support the main gateway to transmit uplink data of multiple gateways under the condition that the primary burst overheads are generated.

Therefore, the application can support the OLT to allocate continuous uplink bandwidth for the gateway in FTTR network where the main gateway is located, and only allocate one burst overhead without adding other burst overhead for all gateways, thereby avoiding the problem of larger and larger occupied proportion of the burst overhead in the uplink bandwidth and improving the utilization rate of the uplink bandwidth and the transmission efficiency of the uplink data. Therefore, the application can be used for solving the problem of lower uplink data transmission efficiency caused by easy increase of burst overhead.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings that are required to be used in some embodiments of the present application will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present application, and other drawings may be obtained according to these drawings to those of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a networking system according to some embodiments of the present application;

Fig. 2 is a schematic structural diagram of a burst frame according to some embodiments of the present application;

fig. 3 is a schematic structural diagram of another burst frame according to some embodiments of the present application;

Fig. 4 is a schematic structural diagram of another networking system according to some embodiments of the present application;

Fig. 5 is a flow chart of a data transmission method according to some embodiments of the present application;

fig. 6 is a flowchart of another data transmission method according to some embodiments of the present application;

FIG. 7 is a schematic diagram of a message according to some embodiments of the present application;

FIG. 8 is a schematic diagram of a message according to some embodiments of the present application;

fig. 9 is a flowchart of another data transmission method according to some embodiments of the present application;

fig. 10 is a schematic diagram of a burst frame according to another embodiment of the present application;

FIG. 11 is a schematic diagram illustrating a burst frame structure according to some embodiments of the present application;

Fig. 12 is a flowchart of another data transmission method according to some embodiments of the present application;

FIG. 13 is a schematic diagram of a burst frame according to some embodiments of the present application;

Fig. 14 is a schematic structural diagram of another burst frame according to some embodiments of the present application;

fig. 15 is a schematic structural diagram of another burst frame according to some embodiments of the present application;

FIG. 16 is a schematic diagram illustrating a burst frame structure according to some embodiments of the present application;

FIG. 17 is a schematic diagram of a burst frame according to some embodiments of the present application;

FIG. 18 is a schematic diagram of a burst frame according to some embodiments of the present application;

fig. 19 is a schematic structural diagram of a data transmission device according to some embodiments of the present application;

fig. 20 is a schematic structural diagram of another data transmission device according to some embodiments of the present application;

fig. 21 is a schematic structural diagram of another data transmission device according to some embodiments of the present application.

Detailed Description

The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the present application, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the description of the present application, "/" means "or" unless otherwise indicated, for example, A/B may mean A or B. "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Furthermore, "at least one" means one or more, and "a plurality" means two or more.

Currently, FTTR full-house optical fiber networking mode gradually enters a scale deployment stage. FTTR networking is similar to FTTH networking, and adopts a point-to-multipoint network topology structure. Wherein the FTTH networking comprises an OLT and a plurality of optical network units (optical network unit, onus). The OLT and the onus are connected by an optical distribution network (optical distribution network, ODN). FTTR the network comprises a master gateway and a plurality of slave gateways. The master gateway and the slave gateway are connected by an indoor optical distribution network (indoor fiber distribution network, IFDN). The primary gateway may also be referred to as a primary fiber unit (MFU). The slave gateway may also be referred to as a slave unit (SFU).

Fig. 1 is a schematic structural diagram of a networking system according to an embodiment of the present application. In the case of FTTH and FTTR combined deployment, the OLT may be connected with multiple master gateways, and each master gateway may be connected with multiple slave gateways. Between the OLT and different slave gateways, the master gateway can provide an equal-delay forwarding channel through transparent forwarding or standard conversion forwarding and other modes, so that the slave gateway is also equivalent to an ONU under the OLT. In this case, the OLT may directly allocate bandwidth to the master gateway and the slave gateway, so as to simplify the bandwidth allocation mode and reduce the bandwidth allocation delay.

When transmitting the uplink data to the OLT, the slave gateway may send a burst frame carrying the uplink data to the master gateway in the burst mode, and the master gateway may also send a burst frame carrying the uplink data of the slave gateway to the OLT in the burst mode.

Burst overhead is typically present in burst mode. The burst overhead, i.e. the bandwidth resource overhead for data synchronization in the bandwidth occupied by the burst frame, generally comprises a guard time, a burst preamble, a burst delimitation, and the like. The bandwidth of the guard time, burst preamble, burst delimitation, etc. parts may typically be reserved by the OLT or the primary gateway.

The protection time is used for avoiding collision between adjacent burst frames. During the protection time, the ONU optical module of the device is generally in a closed process, an open process, or a completely closed state, etc. The length of the protection time is generally greater than or equal to the sum of the times that the ONU optical modules complete the opening process and the closing process.

The burst preamble is typically a specific bit pattern for the primary gateway or OLT to recover the receive clock from the upstream burst frame. Burst delimitation is typically a bit pattern of a specified length that is used by the primary gateway or OLT to identify the start position of the payload in the burst frame. The length and pattern of the burst preamble and burst delimitation may be generally specified by the OLT or the primary gateway.

Exemplary, as shown in fig. 2, a schematic structure of a burst frame according to an embodiment of the present application is shown. In the international telecommunication union telecommunication standardization organization (ITU-T for ITU telecommunication standardization sector, ITU-T) g.9804.2 higher speed passive optical network (HSP) universal transport convergence layer standard, the size of one upstream physical layer (PHYSICAL LAYER, PHY) frame may be 125 microseconds (μs).

ONU1 and ONU2 can send PHY bursts (i.e., PHY bursts or burst frames) to the OLT through bandwidths at different locations. There is a time interval between PHY bursts, i.e., a guard time. An upstream physical synchronization block (upstream physical synchronization block, PSBu) of the PHY burst header may be used to carry overhead such as burst preamble and burst delimitation. The portion of the PHY burst following PSBu may be used to carry the payload. Alternatively, the bandwidth size occupied by the burst overhead may be the same between different PHY bursts and the bandwidth size occupied by the payload may be different.

Fig. 3 is a schematic structural diagram of another burst frame according to an embodiment of the present application. PSBu of the PHY burst header may include four parts. The first part may be a mandatory part for carrying the specified burst preamble and burst delimitation. The burst preamble may be composed of a plurality of consecutive sub-parts as shown in the burst preamble pattern in fig. 3. The second portion, the third portion and the fourth portion are optional portions.

In a possible way, the length and pattern of the burst preamble and burst delimitation may be specified by an indication message. For example, burst Profile (PLOAM) physical layer operation administration and maintenance (PHYSICAL LAYER operations administration AND MAINTENANCE, PLOAM) messages in the ITU-T G.9804.2 standard.

Optionally, burst frames in the standards of ten gigabit passive optical network (10-Gigabit Passive Optical Networks, XG-PON) and 10gigabit symmetric passive optical network (10 gigabit-cable SYMMETRIC PASSIVE optical network, XGS-PON), or burst frames in the g.fin series standard and other standards applicable to FTTR scenarios, etc. are similar to the burst frames described in the ITU-T g.9804.2 standard, and will not be described in detail herein. The data transmission method provided by the application can be suitable for the various standards.

In burst mode, the bandwidth allocated to both the master gateway and the slave gateway by the OLT takes into account the burst overhead. I.e. each primary gateway generates burst overhead when sending burst frames to the OLT. Burst overheads are also generated when each slave gateway sends a burst frame to the master gateway. When the master gateway forwards the uplink data of the slave gateway to the OLT, the burst overhead of the slave gateway still exists in the bandwidth. In this case, as the number of the master gateway and the slave gateway increases, the uplink bandwidth utilization generally decreases greatly, resulting in a problem of low uplink data transmission efficiency.

For example, the GPON standard has an upstream transmission rate of 1.25 gigabits per second (gigabits per second, gbps) and a burst overhead length of 96 bits (bits). It is assumed that 32 master gateways are connected under the OLT, and 3 slave gateways are connected under each master gateway. 19440 bytes of data can be transmitted upstream with all the master and slave gateways transmitting upstream burst frames every 125 mus. In this case, the burst overhead at the time of uplink transmission is about 31.6%.

In order to improve the problem of low uplink data transmission efficiency caused by the easy increase of burst overhead in a related bandwidth configuration mode, the embodiment of the application provides a data transmission method, and a main gateway can send burst frames to an optical line terminal through a plurality of continuous bandwidth parts configured for a plurality of gateways in transmission bandwidth. The burst frame comprises a synchronization data block, i.e. a burst overhead for data synchronization, which occupies a first part of a first one of the plurality of bandwidth parts. And, the payload portion of the burst frame continuously occupies a second portion of the first bandwidth portion, and other bandwidth portions of the plurality of bandwidth portions, for transmitting payload data of the plurality of gateways.

Based on the above, under the condition that the uplink bandwidths configured for a plurality of gateways in the networking to which the main gateway belongs are continuous, the main gateway can transmit uplink data of the plurality of gateways to the optical line terminal through one burst frame, so that uplink burst transmission of the plurality of gateways under one burst overhead is realized. Compared with the mode that burst overhead is reserved in the bandwidth part configured for each gateway by the optical line terminal, so that multiple burst overheads are generated, the method and the device can support the main gateway to transmit uplink data of multiple gateways under the condition that the primary burst overheads are generated, and improve uplink transmission efficiency and bandwidth utilization rate.

Therefore, the application can support the OLT to allocate continuous uplink bandwidth for the gateway in FTTR network where the main gateway is located, and only allocate one burst overhead without adding other burst overhead for all gateways, thereby avoiding the problem of larger and larger occupied proportion of the burst overhead in the uplink bandwidth and improving the utilization rate of the uplink bandwidth and the transmission efficiency of the uplink data. Therefore, the application can improve the bandwidth allocation mechanism to solve the problem of lower uplink data transmission efficiency caused by the easy increase of burst overhead.

In some embodiments of the present application, the data transmission method may be applied to a main gateway and an OLT in a networking system. The networking system provided by the embodiment of the application is described below.

Fig. 4 is a schematic diagram of a networking system 100 according to an embodiment of the present application. As shown in fig. 4, the networking system 100 may include an OLT10, a plurality of master gateways 20, and a plurality of slave gateways 30.

The OLT10 may be connected to the plurality of primary gateways 20 through a wired network (e.g., an optical fiber network) or a wireless network, respectively. The master gateway 20 may be connected to the plurality of slave gateways 30 managed by a wired network or a wireless network, respectively. The master gateway 20 may be configured with a plurality of managed slave gateways 30 into a full-house fiber optic network.

The OLT10 in fig. 4 may be a terminal device for connecting to a fiber optic trunk. In the networking system 100 shown in fig. 4, the OLT10 may allocate bandwidth to the master gateway 20 and the slave gateway 30, and control the start time and window size of the master gateway 20 and the slave gateway 30 to transmit upstream data. Also, the OLT10 may be further configured to connect to an upper-layer network element for supporting data interaction between the master gateway 20 and the slave gateway 30 and the external network.

The master gateway 20 and the slave gateway 30 in fig. 4 may have a communication function for transmitting uplink data.

For example, the OLT10 may allocate a plurality of consecutive bandwidth portions, i.e. transmission bandwidths, in the upstream bandwidth to the master gateway 20 and to each slave gateway 30 connected to the corresponding master gateway 20, and the master gateway 20 further forwards the bandwidth portions belonging to the slave gateway 30 connected to the master gateway 20 to the corresponding slave gateway 30, wherein a first portion of these bandwidth portions and the other bandwidth portions are not forwarded to the slave gateway 30. The slave gateway 30 may transmit upstream data to the master gateway 20 based on the corresponding bandwidth part. The primary gateway 20 may send the synchronization data block of the burst frame in a first portion of the first bandwidth portion of the plurality of bandwidth portions and send upstream data of the primary gateway 20 in a second portion of the bandwidth portion of the primary gateway 20 and in a first portion of the non-first bandwidth portion and send upstream data received from the respective gateway 30 in a second portion of the bandwidth portion of the respective slave gateway 30, forming one large upstream burst sent by the primary gateway 20. The OLT10 may receive the large upstream burst sent in the transmission bandwidth according to the burst mode, continuously receive and identify the data sent in the second portion of the first bandwidth portion and the other bandwidth portions on the basis of the burst mode, and assemble the primary gateway 20 data transmitted in the first portion of the other bandwidth portions as needed, and if the transmission bandwidth includes the bandwidth portion allocated to the primary gateway 20, assemble the primary gateway 20 data transmitted in the first portion of the other bandwidth portions and the data transmitted in the second portion of the bandwidth portion of the primary gateway 20 as needed, to obtain the upstream data of the primary gateway 20 and each secondary gateway 30.

In a possible manner, the master gateway 20 and the slave gateway 30 may have Wi-Fi functions, and may be configured to establish a wireless connection with the terminal, receive uplink data from the terminal, and forward the uplink data from the terminal to the OLT 10. The main gateway 20 may directly forward the upstream data from the terminal to the OLT10, and the slave gateway 30 may forward the upstream data from the terminal to the OLT10 through the main gateway 20.

The data transmission method provided by the embodiment of the present application is described below with reference to the networking system shown in fig. 4. Fig. 5 is a schematic flow chart of a data transmission method according to an embodiment of the present application. The method shown in fig. 5 may be applied to the networking system shown in fig. 4. As shown in fig. 5, the data transmission method may include: s501.

S501, the master gateway sends burst frames to the optical line terminal according to the transmission bandwidth.

Corresponding to the process that the primary gateway transmits the burst frame to the optical line terminal within the transmission bandwidth in S501, the optical line terminal receives the burst frame from the primary gateway within the transmission bandwidth.

Wherein the transmission bandwidth may comprise a continuous plurality of bandwidth portions configured for a plurality of gateways. For example, the plurality of gateways may include a first gateway, a second gateway, a third gateway, and so on. The plurality of bandwidth parts may be a bandwidth part configured by the OLT for the first gateway, a bandwidth part configured by the OLT for the second gateway, a bandwidth part configured by the OLT for the third gateway, etc. That is, the transmission bandwidth may include a bandwidth portion configured by the OLT for the first gateway, a bandwidth portion configured by the OLT for the second gateway, a bandwidth portion configured by the OLT for the third gateway, and so on.

The plurality of gateways may be any combination of gateways belonging to the FTTR group of networks where the primary gateway resides. I.e. the plurality of gateways may comprise a master gateway and at least one slave gateway within FTTR networks where the master gateway is located. Or the plurality of gateways may also include a plurality of slave gateways within the FTTR networks where the master gateway resides. For example, the FTTR network where the master gateway is located may include one master gateway and three slave gateways. The plurality of gateways may be the one master gateway and three slave gateways, or any two slave gateways of the three slave gateways, or the three slave gateways.

The synchronous data block of the burst frame can be used for data synchronization between the OLT and the main gateway, that is, the main gateway sends the burst overhead of the uplink data to the OLT in the burst mode, which can include a protection time, a burst preamble, a burst delimitation, and the like. The synchronization data block may occupy a first portion of a first one of the plurality of bandwidth portions. The first part is the part of the bandwidth part occupied by the burst overhead in the burst mode, which is the gateway corresponding to the bandwidth part. For example, the bandwidth portion corresponding to the first gateway in fig. 5 may be the first bandwidth portion. Burst overhead of the first part of the first bandwidth part, i.e. the bandwidth part of the first gateway.

The payload portion of the burst frame may occupy a second portion of the first bandwidth portion, as well as other bandwidth portions of the plurality of bandwidth portions. The second portion may be a portion of the bandwidth portion that is located after and immediately adjacent to the first portion. For example, in connection with fig. 5, the payload portion may occupy a portion of the bandwidth portion of the first gateway for carrying payload data in fig. 5, as well as the bandwidth portion of the second gateway and the bandwidth portion of the third gateway.

In connection with fig. 5, compared with the manner of reserving burst overhead of each bandwidth part when the main gateway sends uplink data to the OLT in the related art, the burst overhead of the bandwidth part of the first gateway is reserved, the burst overhead of the bandwidth part of the second gateway is not reserved any more, and the burst overhead of the bandwidth part of the third gateway is reserved in the present application. I.e. the burst overhead of the first bandwidth part is reserved, the burst overhead of other bandwidth parts is not reserved any more, and the burst overhead of other bandwidth parts is used for bearing payload data, so as to improve the uplink data transmission efficiency.

In one possible implementation, the payload portion of the burst frame may include first payload data of the primary gateway and second payload data of each gateway of the plurality of gateways. The first payload data may occupy a first portion of the other bandwidth portion. I.e. the payload data of the primary gateway may occupy the burst overhead of other bandwidth portions for uplink transmission. The second payload data of each gateway may occupy a second portion of the transmission bandwidth corresponding to the gateway. I.e. the payload data of the gateway may be transmitted upstream via the second part of the corresponding bandwidth part.

For example, in the case where a plurality of bandwidth parts configured by a plurality of slave gateways in the FTTR network are consecutive, the master gateway may transmit its own payload data in addition to burst overhead transmission synchronization data occupying the first bandwidth part of the consecutive plurality of bandwidth parts.

In connection with fig. 5, in case that the primary gateway is not any gateway in fig. 5, the primary gateway may transmit payload data with burst overhead occupying bandwidth portions of the second gateway and the third gateway, i.e., first payload data located at upstream bandwidths corresponding to the two burst overheads. Meanwhile, the master gateway may transmit the second payload data of each of the first gateway, the second gateway, and the third gateway through the second portions of the bandwidth portions of each of the first gateway, the second gateway, and the third gateway, respectively.

For another example, in the case that the own bandwidth portion is continuous with the bandwidth portion configured by the slave gateway in the FTTR network, the master gateway may occupy burst overhead of other bandwidth portions to transmit own payload data in addition to the burst overhead transmission synchronization data occupying the first bandwidth portion of the continuous two or more bandwidth portions.

In connection with fig. 5, in case the primary gateway is the first gateway in fig. 5, the primary gateway may transmit part of the payload data, i.e. the second payload data corresponding to the primary gateway, through the second part of its bandwidth part. And, the master gateway may also occupy the burst overhead of the bandwidth part of the slave gateway (i.e. the second gateway and the third gateway) to transmit part of the payload data, i.e. the first payload data located in the uplink bandwidth corresponding to the two burst overheads. Meanwhile, the main gateway can forward the payload data of the second gateway, namely the second payload data corresponding to the second gateway, to the OLT through the second part of the bandwidth part of the second gateway. The main gateway may forward payload data of the third gateway, i.e. second payload data corresponding to the third gateway, to the OLT through the second portion of the bandwidth portion of the third gateway.

In case the primary gateway is the second gateway in fig. 5, the primary gateway may transmit payload data, i.e. the second payload data corresponding to the primary gateway, through the second part of its bandwidth part. The master gateway may also transmit payload data with burst overhead occupying a bandwidth portion thereof, and transmit payload data with burst overhead occupying a bandwidth portion of the slave gateway (i.e., the third gateway), i.e., the first payload data located in the upstream bandwidth corresponding to the two burst overheads. Meanwhile, the main gateway can forward the payload data of the first gateway, namely the second payload data corresponding to the first gateway, to the OLT through the second part of the bandwidth part of the first gateway. The main gateway may forward payload data of the third gateway, i.e. second payload data corresponding to the third gateway, to the OLT through the second portion of the bandwidth portion of the third gateway.

As is apparent from the above description of S501, the primary gateway may transmit burst frames to the optical line terminal through a plurality of consecutive bandwidth parts configured for a plurality of gateways within the transmission bandwidth. The burst frame comprises a synchronization data block, i.e. a burst overhead for data synchronization, which occupies a first part of a first one of the plurality of bandwidth parts. And, the payload portion of the burst frame continuously occupies a second portion of the first bandwidth portion, and other bandwidth portions of the plurality of bandwidth portions, for transmitting payload data of the plurality of gateways.

Based on the above, under the condition that the uplink bandwidths configured for a plurality of gateways in the networking to which the main gateway belongs are continuous, the main gateway can transmit uplink data of the plurality of gateways to the optical line terminal through one burst frame, so that uplink transmission of the plurality of gateways under one burst overhead is realized. Compared with the mode that burst overhead is reserved in the bandwidth part configured by the optical line terminal for each gateway and multiple burst overheads are generated, the method and the device can support the main gateway to transmit uplink data of multiple gateways under the condition that the primary burst overheads are generated.

Therefore, the application can support the OLT to allocate continuous uplink bandwidth for the gateway in FTTR network where the main gateway is located, and only allocate one burst overhead without allocating other burst overhead for all gateways, thereby avoiding the problem that the ratio of the burst overhead occupied in the uplink bandwidth is larger and larger, and improving the utilization rate of the uplink bandwidth and the transmission efficiency of the uplink data. Therefore, the application can improve the bandwidth allocation mechanism to solve the problem of lower uplink data transmission efficiency caused by the easy increase of burst overhead.

In an embodiment, as shown in fig. 6, a flow chart of another data transmission method according to an embodiment of the application is shown. The data transmission method can be used for supporting the main gateway to determine that a plurality of bandwidth parts configured in the networking are continuous, so that uplink data is transmitted in a mode of occupying burst overhead. The data transmission method comprises the following steps: s601.

S601, the OLT sends a first message to the main gateway.

The first message may be used to instruct a plurality of continuous bandwidth portions configured for a plurality of gateways in a network where the primary gateway is located, and instruct the primary gateway to use a first portion of other bandwidth portions for data transmission, that is, allow the primary gateway to use a first portion of the transmission bandwidth other than the first bandwidth portion for data transmission.

Corresponding to the process of S601, the primary gateway receives the first message sent by the OLT, and may acquire a plurality of consecutive bandwidth portions indicated by the first message, and perform data transmission according to the indication of the optical line terminal by using a first portion other than the first bandwidth portion in the transmission bandwidth.

In one possible manner, the first message may be a Bandwidth map (BWmap) message. Fig. 7 shows a schematic diagram of the structure of a message, i.e. a BWmap message as exemplified by ITU-T g.9804.2. As shown in fig. 7, the BWmap message may occupy N by 8 bytes (byte). The allocation structures (allocation structure) 1, the allocation structures 2, … and the allocation structures N are respectively allocated to the gateway 1, the gateway 2, … and the gateway N, and can respectively occupy 8 bytes. The bandwidth allocation identity (allocation identifier, alloc-ID) is a bandwidth allocation entity belonging to each gateway and may occupy 14 bits. Flags (flags) may be used to indicate uplink dynamic bandwidth reporting (dynamic bandwidth report upstream, DBRu) and uplink physical layer operation management maintenance (PLOAMu up stream, plomu). The flag may occupy 2 bits, and DBRu and PLOAmu each occupy 1 bit. The start time (StartTime) represents the beginning of the bandwidth and may occupy 16 bits. The grant size (GrantSize) represents the length of the bandwidth and may occupy 16 bits. A forced wake-up indication (FWI) may occupy 1 bit. Burst Profile (Burst Profile) may occupy 2 bits. DBRu, PLOAMu, FWI, burst profile are option flags for bandwidth allocation, respectively. The header error check (header error check, HEC) is an error check field that may occupy 13 bits.

In one possible implementation, to improve the problem that the utilization of the upstream bandwidth is low, the OLT may aggregate the upstream bandwidths of different gateways in the same FTTR networks. For example, when allocating bandwidths to multiple gateways in the same FTTR network, the OLT may determine a plurality of consecutive bandwidth portions from the upstream bandwidth, allocate the plurality of bandwidth portions in one-to-one correspondence with the plurality of gateways, and determine to allow the primary gateway to use a first portion of the plurality of bandwidth portions other than the first bandwidth portion for upstream data transmission. Further, the OLT may send a first message to the primary gateway to indicate that the plurality of bandwidth parts are configured to correspond to the plurality of gateways and allow the primary gateway to use a first part of the plurality of bandwidth parts other than the first bandwidth part for upstream data transmission.

After receiving the first message from the OLT, the primary gateway may parse the first message, determine that a plurality of bandwidth portions are allocated in one-to-one correspondence with the plurality of gateways, and determine, according to the configuration of the OLT, that the primary gateway is allowed to use a first portion other than the first bandwidth portion in the plurality of bandwidth portions for uplink data transmission.

Further, the primary gateway may determine that the plurality of bandwidth portions are consecutive according to the start and stop positions of the respective bandwidth portions, and information such as a start time and a window size of burst overhead of the respective bandwidth portions. Based on this, when the primary gateway transmits uplink data in the burst mode, the primary gateway may occupy the burst overhead of the other bandwidth part except the first bandwidth part to transmit payload data.

In a possible implementation, when the master gateway forwards the indication information about bandwidth allocation to the slave gateway, the bandwidth portion allocated to the slave gateway may be sent to the slave gateway, without sending allocation information about the upstream bandwidths corresponding to these burst overheads to the slave gateway. When the OLT allocates bandwidth to each slave gateway, the OLT still reserves uplink bandwidth resources corresponding to the protection time, the burst preamble, the transmission boundary, and other burst overheads according to the current mode, and the slave gateway sends burst transmission to the master gateway according to the current mode.

For example, after determining that the plurality of bandwidth parts are allocated in one-to-one correspondence with the plurality of gateways, the master gateway may send indication information to the slave gateway among the plurality of gateways to indicate to the slave gateway the bandwidth parts allocated to the slave gateway. Thus, the upstream bandwidth received from the gateway in the present application may include implicitly allocated burst overhead. In this way, in the case of supporting the uplink burst transmission by the slave gateway, the slave gateway in the present application may not perceive the uplink bandwidths corresponding to the burst overheads allocated to the master gateway by the OLT.

In a possible manner, when the primary gateway is instructed to use the first part of the non-first bandwidth part in the transmission bandwidth for data transmission, the first part of each non-first bandwidth part may be instructed by an explicit configuration manner, or the first part of each non-first bandwidth part may be instructed by an implicit configuration manner.

And, the OLT may also instruct, via predefined parameters, to allow the primary gateway to use a first portion of the transmission bandwidth other than the first bandwidth portion for data transmission. There may be two values for the predefined parameter. A first value (e.g., 0) may be used to indicate that the primary gateway is not permitted to use a first portion of the plurality of bandwidth portions other than the first bandwidth portion for upstream data transmission. A second value (e.g., 1) may be used to indicate that the primary gateway is permitted to use a first portion of the plurality of bandwidth portions other than the first bandwidth portion for upstream data transmission. Based on this, the OLT may set the value of the predefined parameter to a second value in the first message or other interactive message to indicate that the primary gateway is allowed to use a first portion of the plurality of bandwidth portions other than the first bandwidth portion for upstream data transmission.

In a possible manner, in case the first part of each non-first bandwidth part is indicated by means of explicit configuration, the predefined parameter may also be used to instruct the master gateway to implicitly configure the first part of each non-first bandwidth part to each slave gateway, respectively.

For example, when the first part of each non-first bandwidth part is indicated by means of implicit configuration, the OLT may specify the size of the burst overhead, i.e. the required bandwidth of the parts such as the guard time, the burst preamble and the burst delimitation, and indicate the start-stop position of the second part of the bandwidth part corresponding to each gateway. I.e. the first message may comprise the first indication information and the second indication information. The first indication information may be used to indicate a start-stop position of a second portion of the bandwidth portion corresponding to each gateway. The second indication information may be used to indicate a required bandwidth of the synchronized data block.

Based on this, when the master gateway acquires a plurality of continuous bandwidth parts indicated by the first message, the start and stop positions of each bandwidth part can be determined according to the first indication information and the second indication information. For example, the primary gateway may advance the starting position of the second portion of one bandwidth portion by the amount of bandwidth required to synchronize the data blocks to the starting position of the one bandwidth portion. Further, the primary gateway may determine whether the start-stop locations of the respective bandwidth portions are consecutive. If the start position of one bandwidth part is connected with the end position of the adjacent bandwidth part and/or the end position of the one bandwidth part is connected with the start position of the adjacent bandwidth part, the master gateway can determine that the start and end positions of the bandwidth parts are continuous, and acquire a plurality of continuous bandwidth parts indicated by the first message. Wherein the start position of one bandwidth part may be a position of a required bandwidth of the synchronization data block spaced apart from the start position of the second part of the one bandwidth part, and the end position of the one bandwidth part may be an end position of the second part of the one bandwidth part. Further, the primary gateway identifies a first portion of the consecutive plurality of bandwidth portions that is not the first bandwidth portion.

For another example, when implementing by explicitly configuring the bandwidth, the OLT may allocate a first portion of the plurality of bandwidth portions other than the first bandwidth portion to the primary gateway, and generate bandwidth allocation indication information for indicating the bandwidth allocation manner. I.e. the first message may also comprise third indication information. The third indication information may be used to indicate a start-stop position of a first portion of the other bandwidth portions corresponding to the primary gateway, that is, to configure the primary gateway with a display of the first portion of the non-first bandwidth portion. Further, the OLT may send a first message carrying the third indication information to the primary gateway. Accordingly, the primary gateway may receive the first message carrying the third indication information sent by the OLT, and parse the first message to obtain the third indication information to directly identify a first portion other than the first bandwidth portion among the continuous multiple bandwidth portions.

And the master gateway can also directly determine whether the start-stop positions of the second part of the bandwidth part corresponding to each gateway are continuous with the start-stop positions of the first parts of other bandwidth parts. If the start-stop position of the second part of the bandwidth part corresponding to each gateway is continuous with the start-stop positions of the first parts of the other bandwidth parts, the master gateway can determine that the plurality of bandwidth parts are continuous, that is, acquire a plurality of continuous bandwidth parts indicated by the first message.

In one possible approach, the master gateway may also send a second message to a slave gateway of the plurality of gateways. The second message may include second indication information and fourth indication information. The second indication information may be used to indicate a required bandwidth of the synchronized data block. The fourth indication information may be used to indicate a start-stop position of a second portion of the bandwidth portion corresponding to the slave gateway. Based on this, after receiving the second message from the gateway, the bandwidth for data transmission and the bandwidth for transmission of burst overhead can be identified based on the fourth indication information.

In a possible example, as shown in fig. 8, a schematic structural diagram of a message is provided in an embodiment of the present application. The predefined parameter may be an R field in an embedded operations administration and maintenance (embedded operations administration AND MAINTENANCE, embedded OAM) domain of a superframe under ITU-T g.9804.2 standard for indicating whether the primary gateway is allowed to burst through a first part of the other bandwidth part.

The R field of the operation control (operation control, OC) structure in the embedded OAM domain is a reserved field, with a value of 0. By defining this R field, when its value is 0, it may be used to indicate that the primary gateway is not allowed to burst through the first of the other bandwidth parts. When the value is 1, the method can be used for indicating that the primary gateway is allowed to perform burst transmission through the first part of other bandwidth parts, namely, the uplink bandwidth corresponding to the burst overhead of the bandwidth part except the first bandwidth part in the continuous multiple bandwidth parts.

The R field is located within a 51-bit OC body of the OC structure. The PON identifier type (PON IDENTIFIER TYPE, PIT) field within the OC body is 8 bits in size. The PON identifier (PON-ID) field has a size of 32 bits. The size of the R field is 1 bit. The size of the C field is also 1 bit. The transmission optical level (transmit optical level, TOL) field has a size of 9 bits. The PIT field may be divided into an RE field with a size of 1 bit, an ODN type field with a size of 3 bits, a Downlink (DS) forward error correction (forward error correction, FEC) field with a size of 1 bit, a protocol indication field P with a size of 1 bit, and a link type (link type) field with a size of 2 bits. The PON-ID field may be divided into a management tag (ADMINISTRATIVE LABEL) field of 28 bits in size and a downstream wavelength channel (downstream WAVELENGTH CHANNEL ID, DWLCH ID) field of 4 bits in size.

In one possible approach, whether the primary gateway is allowed to burst through the first of the other bandwidth portions may also be indicated by messages in the existing PLOAM and optical network unit management control interface (ONU MANAGEMENT AND control Interface, OMCI). The predefined parameters may be implemented by redefining reserved fields in these messages, indicating to the primary gateway that the primary gateway is allowed to burst through the first of the other bandwidth parts. Alternatively, a new message may be defined in the PLOAM and OMCI as the first message to indicate to the primary gateway to allow the primary gateway to burst through the first of the other bandwidth portions.

In one possible manner, the OLT may simultaneously instruct, through the first message, to configure the plurality of bandwidth portions to correspond to the plurality of gateways, and to configure the first portion of the transmission bandwidth that is not the first bandwidth portion to correspond to the primary gateway. Alternatively, the OLT may also configure the plurality of bandwidth parts to correspond to the plurality of gateways through a first message indication, and allow the primary gateway to use a first part of the transmission bandwidth other than the first bandwidth part for data transmission through a message indication different from the first message indication.

As can be seen from the description of S601, the OLT may instruct the upstream bandwidth corresponding to the burst overhead that can be utilized by the primary gateway. And after receiving the indication information, the main gateway can judge the multiple bandwidth parts, and if the continuous multiple bandwidth parts are allocated to the multiple gateways in the networking to which the main gateway belongs under the condition of considering the uplink bandwidth corresponding to the burst overhead, the main gateway can determine to reserve the burst overhead in the first bandwidth part, and the subsequent burst overhead can be used for transmitting the uplink data of the main gateway so as to support the main gateway to occupy the burst overhead of other bandwidth parts to transmit the uplink data. Based on this. The primary gateway may aggregate multiple burst frames of multiple gateways into one large burst frame to reduce the proportion of bandwidth resources in the upstream bandwidth for burst overhead.

Therefore, the application can repeatedly use the uplink bandwidth corresponding to the burst spending of the bandwidth parts except the first bandwidth part in the plurality of bandwidth parts, namely, the slave gateway can transmit uplink data to the OLT by using the slave gateway while transmitting the burst protection time, the burst preamble, the burst delimitation and the like to the master gateway, thereby increasing the uplink bandwidth which can be allocated by the OLT, reducing the increase of the burst spending caused by the increase of the number of the slave gateways, effectively improving the uplink bandwidth utilization rate and simultaneously improving the effectiveness of the combination deployment of the FTTH and FTTR.

In one embodiment, where the plurality of gateways includes a primary gateway, to support the primary gateway to send payload data at different locations in the burst frame, an embodiment of the present application provides an alternative implementation, comprising: and (A) a step.

And step A, splitting the payload data of the main gateway into third payload data and other first payload data under the condition that the plurality of gateways comprise the main gateway.

The third payload data may include second payload data of the primary gateway, and first payload data of which the occupied first portion is continuous with the second portion of the bandwidth portion corresponding to the primary gateway. Other first payload data may be used to represent first payload data that is discontinuous in a second portion of the occupied first portion of bandwidth corresponding to the primary gateway.

In one possible manner, in a case where one first payload data corresponding bandwidth and a second payload data corresponding bandwidth of the main gateway are consecutive, the one first payload data corresponding bandwidth and the second payload data corresponding bandwidth of the main gateway may be spliced into a large bandwidth, and the main gateway may transmit the consecutive one first payload data and second payload data of the main gateway within the large bandwidth.

In a possible implementation manner, if the plurality of gateways includes the primary gateway, it may indicate that the OLT is included in the continuous plurality of bandwidth portions to allocate to the primary gateway. In this case, the primary gateway may transmit payload data through the upstream bandwidth corresponding to the burst overhead of the other bandwidth part, in addition to transmitting payload data through the second part of its bandwidth part. I.e. the primary gateway may split the payload data into one third payload data, as well as other first payload data. For example, the primary gateway may split the third payload data according to the second portion of the bandwidth portion thereof and the size of the first portion continuous with the second portion of the bandwidth portion thereof, and may split other payload data into other first payload data according to the size of the uplink bandwidth corresponding to the burst overhead. Subsequently, the main gateway can send the data subframes according to the sequence of each part of bandwidth, so that the OLT can assemble the groups according to the sequence of the reception.

In one embodiment, in the case where the plurality of gateways does not include the primary gateway, in order to support the primary gateway to transmit payload data at different locations in the burst frame, an embodiment of the present application provides an alternative implementation, including: and (B) a step of.

And B, splitting the payload data of the main gateway into first payload data corresponding to a first part of each non-first bandwidth part by the main gateway under the condition that the plurality of gateways do not comprise the main gateway.

In one possible way, the first part, i.e. the at least one first part, of each non-first bandwidth part, i.e. the primary gateway may split the payload data of the primary gateway into at least one first payload data in one-to-one correspondence with the at least one first part.

In a possible implementation, if the plurality of gateways does not include the primary gateway, it may indicate that the bandwidth portion allocated to the primary gateway by the OLT is not included in the continuous plurality of bandwidth portions. In this case, the primary gateway may transmit payload data through an upstream bandwidth corresponding to burst overhead of the other bandwidth part. The primary gateway may split the payload data into at least one first payload data. For example, the primary gateway may split the data frame corresponding to the payload data into at least one data subframe according to a window size of burst overhead of other bandwidth parts of the plurality of bandwidth parts.

In an embodiment, as shown in fig. 9, a flow chart of another data transmission method according to an embodiment of the application is shown. In the case of transmitting uplink data, the data transmission method provided by the embodiment of the application may include: S901-S904.

S901, the slave gateway transmits a burst subframe on a bandwidth portion corresponding to the slave gateway.

Corresponding to the procedure of S901, the master gateway receives a burst subframe transmitted from the slave gateway on the bandwidth portion corresponding to the slave gateway.

Wherein the burst subframe may include a synchronization data block of the burst subframe and second payload data from the gateway.

In a possible implementation manner, the bandwidth portion corresponding to the slave gateway may be any one of a plurality of continuous bandwidth portions, that is, the bandwidth portion allocated to the slave gateway is any one of the plurality of bandwidth portions by the OLT. The slave gateway may transmit the burst subframe to the master gateway through the corresponding bandwidth part to efficiently transmit the uplink data in the burst mode.

S902, when the bandwidth portion corresponding to the slave gateway is the first bandwidth portion of the transmission bandwidth, the master gateway transmits the synchronization data block of the burst frame on the first portion of the bandwidth portion corresponding to the slave gateway.

Corresponding to the procedure of S902, the OLT receives a synchronization data block of a burst frame transmitted by the master gateway on a first portion of the bandwidth portion corresponding to the slave gateway.

In one possible implementation manner, if the bandwidth portion corresponding to the slave gateway is the first bandwidth portion in the transmission bandwidth, the master gateway may send a synchronization data block of the burst frame on the first portion of the bandwidth portion corresponding to the slave gateway, so as to support the OLT to recover the receiving clock corresponding to the master gateway, and identify a start position of the payload on the transmission bandwidth. Based on the above, the OLT may start to continuously receive the subsequent payloads in the transmission bandwidth, thereby implementing transmission of uplink data in the network where the primary gateway is located.

S903, when the bandwidth portion corresponding to the slave gateway is not the first bandwidth portion of the transmission bandwidth, the master gateway sends the first payload data of the master gateway on the first portion of the bandwidth portion corresponding to the slave gateway.

Corresponding to the procedure of S903, the OLT receives the first payload data of the master gateway transmitted by the master gateway on a first portion of the bandwidth portion corresponding to the slave gateway.

In a possible implementation manner, if the bandwidth portion corresponding to the slave gateway is a non-first bandwidth portion in the transmission bandwidth, it may indicate that the master gateway has transmitted the synchronization data through the first portion of the first bandwidth portion in the transmission bandwidth, that is, the OLT may have identified the start position of the payload in the transmission bandwidth, and is continuously receiving the uplink data, without performing data synchronization again. In this case, the primary gateway may transmit the first payload data of the primary gateway on the first portion of the bandwidth portion corresponding to the secondary gateway, so that the OLT continuously receives the first payload data of the primary gateway transmitted by the primary gateway on the first portion of the bandwidth portion corresponding to the secondary gateway.

And S904, the master gateway forwards second payload data of the slave gateway on a second part of the bandwidth part corresponding to the slave gateway.

Corresponding to the procedure of S904, the OLT receives the second payload data of the slave gateway transmitted by the master gateway on a second portion of the bandwidth portion corresponding to the slave gateway.

In one possible implementation, the master gateway may acquire the second payload data of the slave gateway by recovering the clock from the burst preamble of the burst subframe sent by the slave gateway and searching for burst delimitations. Further, the master gateway may forward the second payload data of the slave gateway to the OLT in a second portion of the bandwidth portion corresponding to the slave gateway. Accordingly, the OLT may continuously receive the second payload data of the slave gateway transmitted by the master gateway on a second portion of the bandwidth portion corresponding to the slave gateway.

In a possible example, as shown in fig. 10, a schematic structure of a burst frame is provided in an embodiment of the present application. It is assumed that the plurality of gateways may include a slave gateway 1, a slave gateway 2, and a slave gateway 3 to which the master gateway is connected.

The bandwidth portion corresponding to the slave gateway 1 is the first bandwidth portion on the transmission bandwidth, and the bandwidth portion corresponding to the slave gateway 2 and the bandwidth portion corresponding to the slave gateway 3 are the non-first bandwidth portions on the transmission bandwidth.

The OLT may allocate three consecutive bandwidth portions to the slave gateway 1, the slave gateway 2 and the slave gateway 3 to aggregate these upstream bandwidths. Each bandwidth portion includes a burst overhead portion and a payload carrying portion. Wherein the burst overhead corresponding part of the bandwidth is implicitly allocated, i.e. reserved by the OLT. The payload carrying part is explicitly allocated, e.g. by BWmap allocation. The OLT may also inform the primary gateway, via R-bit position 1 of the OC body, that the first portion of the non-first bandwidth portion of the transmission bandwidth may be utilized. After receiving the first message from the OLT, the primary gateway may parse the first message to obtain the bandwidth allocation information, and store the bandwidth allocation information locally. And the main gateway can determine that the three bandwidth parts are continuous uplink bandwidths according to the end-to-end connection of the start-stop positions of the three bandwidth parts. I.e. from the end position of the bandwidth part of gateway 1 to the start position of the bandwidth part of gateway 2, from the end position of the bandwidth part of gateway 2 to the start position of the bandwidth part of gateway 3. The protection time length of the general Burst overhead is specified in the standard, the Burst preamble and the Burst delimitation are configured by the OLT through the burst_profile message and the flag in the BWmap, so that the master gateway is configured by acquiring the first part length belonging to its own bandwidth part, and the first part length of the slave gateway bandwidth part in the belonging network, and the size and start-stop position of the corresponding bandwidth part are formed with the corresponding payload carrying part. And, the master gateway may determine that the bandwidth portions of the slave gateway 2 and the slave gateway 3 are continuous bandwidth portions other than the first bandwidth portion, and may occupy burst overhead of the slave gateway 2 and the slave gateway 3 to transmit uplink data. Of course, the OLT may normally allocate the bandwidth portion of the slave gateway 1, i.e. the burst overhead corresponding portion of the bandwidth is implicitly allocated, i.e. the payload carrying portion reserved by the OLT is explicitly allocated, and by BWmap allocation, the burst overhead corresponding portion of the slave gateways 2,3 is explicitly allocated to the master gateway, and the carrying payload portion of the slave gateways 2,3 is explicitly allocated to the slave gateways 2,3, respectively.

The master gateway may send indication information to the slave gateway 1, the slave gateway 2 and the slave gateway 3, respectively, to correspond to the bandwidth portions respectively indicating the OLT allocation, wherein the burst overhead corresponding portion of the bandwidth is implicitly allocated, i.e. reserved by the master gateway, the payload carrying portion is explicitly allocated, by BWmap allocation. The slave gateway 1, the slave gateway 2, and the slave gateway 3 can parse the instruction information to obtain respective bandwidth parts, and transmit burst frames through the respective bandwidth parts. Each burst frame may include burst overhead and payload data. After the master gateway receives three burst frames from the slave gateway 1, the slave gateway 2 and the slave gateway 3, the master gateway can recover the clock and search burst delimitation through the burst preambles of the three burst frames respectively, and obtain the payload data of the slave gateway 1, the slave gateway 2 and the slave gateway 3.

As shown in fig. 10, in the conventional uplink transmission scheme, even if the portions of the bandwidth allocated by the OLT to the slave gateway 1, the slave gateway 2, and the slave gateway 3 are continuous. However, when the master gateway forwards the upstream data of the slave gateway 1, the slave gateway 2 and the slave gateway 3 to the OLT, it is still necessary to send burst overheads within the upstream bandwidths of the slave gateway 1, the slave gateway 2 and the slave gateway 3, respectively.

Fig. 11 is a schematic structural diagram of another burst frame according to an embodiment of the present application. In the transmission manner provided by the application, the master gateway can transmit burst overhead, namely guard time, burst preamble, burst delimitation and the like, before forwarding the uplink data of the slave gateway 1 to the OLT, and transmit the payload data of the slave gateway 1, transmit the first payload data 1 of the master gateway itself in the uplink bandwidth corresponding to the burst overhead of the slave gateway 2, transmit the payload data of the slave gateway 2, and continue to transmit the first payload data 2 of the master gateway itself in the uplink bandwidth corresponding to the burst overhead of the slave gateway 3, and transmit the payload data of the slave gateway 3.

Based on this, the primary gateway forwards payload data of the secondary gateway 1, the secondary gateway 2 and the secondary gateway 3 to the OLT through the second parts of the three burst frames, and may occupy burst overhead in the burst frames of the secondary gateway 2 and the secondary gateway 3 to transmit uplink data of the primary gateway.

Compared with the traditional transmission mode of 3 burst frames which reach the OLT and are used for generating 3 burst overheads, the transmission mode provided by the embodiment of the application can combine 3 burst frames of the slave gateway 1, the slave gateway 2 and the slave gateway 3 as 3 burst subframes into 1 large burst frame, so that 1 large burst frame which reaches the OLT and is used for generating 1 burst overheads is realized, the 1 large burst frame comprises payload data transmitted by the master gateway in two burst overheads of the slave gateway 2 and the slave gateway 3, namely, the uplink bandwidth corresponding to the two burst overheads is replaced by the payload data of the master gateway by bearing the burst overheads.

Based on the above example, the application can reduce 3 burst overheads to 1 burst overheads, and the uplink bandwidth resource amount occupied by the burst overheads is reduced by about 66%. Further, the larger the number of the plurality of gateways is, the more significantly the amount of uplink bandwidth resources occupied by the burst overhead is reduced. Therefore, the application can improve the utilization rate of the uplink bandwidth, thereby improving the transmission efficiency of the uplink data.

In an embodiment, as shown in fig. 12, a flow chart of another data transmission method according to an embodiment of the application is shown. In the case of transmitting uplink data, the data transmission method provided by the embodiment of the application may include: S1001-S1002.

S1001, when the bandwidth part corresponding to the master gateway is the first bandwidth part in the transmission bandwidth, the master gateway sends a synchronous data block of the burst frame on the first part of the bandwidth part corresponding to the master gateway, and sends second payload data of the master gateway on the second part of the bandwidth part corresponding to the master gateway.

Corresponding to the process of S1001, the OLT receives the synchronization data block of the burst frame transmitted by the primary gateway on a first portion of the bandwidth portion corresponding to the primary gateway, and receives the second payload data of the primary gateway transmitted by the primary gateway on a second portion of the bandwidth portion corresponding to the primary gateway.

In a possible implementation, in case the plurality of gateways includes a primary gateway, the bandwidth portion allocated to the primary gateway by the OLT may be a first bandwidth portion of the plurality of bandwidth portions. In this case, the primary gateway may send the synchronization data block of the burst frame on a first portion of the bandwidth portion corresponding to the primary gateway. Based on this, the OLT may receive the synchronization data block of the burst frame sent by the primary gateway on the first portion of the bandwidth portion corresponding to the primary gateway, so as to recover the receive clock corresponding to the primary gateway, and identify the start position of the payload on the transmission bandwidth. Furthermore, the OLT may receive the second payload data of the primary gateway sent by the primary gateway on the second portion of the bandwidth portion corresponding to the primary gateway, and start to continuously receive other payloads on the transmission bandwidth, so as to implement transmission of uplink data in the network where the primary gateway is located.

S1002, when the bandwidth part corresponding to the main gateway is not the first bandwidth part in the transmission bandwidth, the main gateway sends continuous first payload data and second payload data of the main gateway on the first part and the second part of the bandwidth part corresponding to the main gateway.

Corresponding to the process of S1002, the OLT receives, on a first portion and a second portion of the bandwidth portion corresponding to the primary gateway, first payload data and second payload data of the primary gateway transmitted by consecutive primary gateways.

In a possible implementation, in case the plurality of gateways includes a primary gateway, the bandwidth portion allocated to the primary gateway by the OLT may be a non-first bandwidth portion of the plurality of bandwidth portions. In this case, the primary gateway has already transmitted the synchronization data through the first part of the first bandwidth part of the transmission bandwidth, i.e. the OLT has already identified the start position of the payload in the transmission bandwidth, is continuously receiving the upstream data, without having to perform the data synchronization again. The primary gateway may send the first payload data and the second payload data of the consecutive primary gateway over the first portion and the second portion of the bandwidth portion corresponding to the primary gateway so that the OLT continuously receives the payload data of the primary gateway over the bandwidth portion corresponding to the primary gateway.

In a possible manner, the master gateway may further transmit the first payload data of the master gateway, which is continuous with the second payload data of the master gateway, on the first portion of the bandwidth portion corresponding to the slave gateway, in case the second portion of the bandwidth portion corresponding to the master gateway is continuous with the first portion of the bandwidth portion corresponding to the slave gateway, i.e. in case the second portion of the bandwidth portion corresponding to the master gateway is immediately followed by the first portion of the bandwidth portion corresponding to the slave gateway. In this case, the OLT may further continuously receive the first payload data of the master gateway on the first portion of the bandwidth portion corresponding to the slave gateway after receiving the data on the bandwidth portion corresponding to the master gateway.

In one possible manner, the master gateway may send the first payload data of the master gateway that is discontinuous with the second payload data of the master gateway on the first portion of the bandwidth portion corresponding to the slave gateway, in case the second portion of the bandwidth portion corresponding to the master gateway is discontinuous with the first portion of the bandwidth portion corresponding to the slave gateway. In this case, the OLT may receive the first payload data of the primary gateway, which is discontinuous with the second payload data of the primary gateway, at a first portion of the bandwidth portion corresponding to the secondary gateway.

In a possible example, as shown in fig. 13, a schematic structural diagram of another burst frame is provided in an embodiment of the present application. It is assumed that the slave gateway 1, the slave gateway 2, and the slave gateway 3 are connected to the master gateway. The plurality of gateways includes a master gateway, and a slave gateway 2 and a slave gateway 3 to which the master gateway is connected. The OLT does not currently allocate upstream bandwidth to the slave gateway 1, but may allocate upstream bandwidth of a non-first bandwidth portion to the slave gateway 1, the processing logic of which is the same as that of the slave gateways 2, 3.

The bandwidth portion corresponding to the master gateway is the first bandwidth portion on the transmission bandwidth, and the bandwidth portion corresponding to the slave gateway 2 and the bandwidth portion corresponding to the slave gateway 3 are the non-first bandwidth portions on the transmission bandwidth.

The OLT may allocate three consecutive bandwidth portions to the master gateway, the slave gateway 2 and the slave gateway 3 to aggregate these upstream bandwidths. Each bandwidth part comprises a burst overhead part and a payload carrying part, wherein the burst overhead corresponding part of the bandwidth is implicitly allocated, i.e. reserved by the OLT, the payload carrying part is explicitly allocated, and by BWmap allocation, the OLT also informs the primary gateway through R-bit position 1 of the OC body that a first part of the transmission bandwidth, which is not the first bandwidth part, is available. After receiving the first message from the OLT, the primary gateway may parse the first message to obtain the bandwidth allocation information, and store the bandwidth allocation information locally. And the main gateway can determine that the three bandwidth parts are continuous uplink bandwidths according to the end-to-end connection of the start-stop positions of the three bandwidth parts. The protection time length of the general Burst overhead is specified in the standard, the Burst preamble and the Burst delimitation are configured by the OLT through the burst_profile message and the flag in the BWmap, so that the master gateway is configured by acquiring the first part length belonging to its own bandwidth part, and the first part length of the slave gateway bandwidth part in the belonging network, and the size and start-stop position of the corresponding bandwidth part are formed with the corresponding payload carrying part. And, the master gateway may determine that the bandwidth portions of the slave gateway 2 and the slave gateway 3 are continuous bandwidth portions other than the first bandwidth portion, and may occupy burst overhead of the slave gateway 2 and the slave gateway 3 to transmit uplink data. Of course, the OLT may normally allocate the bandwidth portion of the master gateway, that is, the bandwidth of the burst overhead portion corresponding to the bandwidth is implicitly allocated, that is, the payload carrying portion is reserved by the OLT, and by BWmap allocation, the bandwidth of the burst overhead portion corresponding to the slave gateway 2,3 is explicitly allocated to the master gateway, and the bandwidth of the payload carrying portion of the slave gateway 2,3 is explicitly allocated to the slave gateway 2,3, respectively.

The master gateway may send indication information to the slave gateway 2 and the slave gateway 3, respectively, to correspond to the bandwidth portions allocated by the indication OLT, respectively, wherein the burst overhead corresponds to the portion of bandwidth being implicitly allocated, i.e. reserved by the master gateway, the payload carrying portion being explicitly allocated, by BWmap allocation. The slave gateway 2 and the slave gateway 3 can parse the indication information to obtain respective bandwidth portions. Based on this, the master gateway, the slave gateway 2 and the slave gateway 3 can each transmit burst frames in the allocated bandwidth portion. Each burst frame may include burst overhead and payload data. After receiving the burst frames from the gateway 2 and the slave gateway 3, the master gateway can recover the clock and search burst delimitation through its respective burst preamble, and acquire payload data of the slave gateway 2 and the slave gateway 3.

As shown in fig. 13, in the conventional upstream transmission mode, even if the portions of the bandwidth allocated by the OLT to the master gateway, the slave gateway 2, and the slave gateway 3 are continuous. However, when the master gateway transmits burst data to the OLT in the burst mode, in addition to the burst overhead transmission synchronization data occupying a part of its bandwidth, it is still necessary to transmit burst overheads within the upstream bandwidths of the slave gateway 2 and the slave gateway 3, respectively, when forwarding the upstream data of the slave gateway 2 and the slave gateway 3 to the OLT.

Fig. 14 is a schematic structural diagram of another burst frame according to an embodiment of the present application. In the transmission mode provided by the application, the main gateway firstly transmits burst overhead, namely protection time, burst preamble, burst delimitation and the like, to the OLT, and then transmits payload data of the main gateway by occupying the second part of the bandwidth part of the main gateway. After receiving the burst frame from the gateway 2, the master gateway can recover the clock and search burst delimitation through its burst preamble, obtain the payload data of the slave gateway 2, and send the payload data of the master gateway itself through the uplink bandwidth corresponding to the burst overhead of the slave gateway 2, and form the payload 1 with the payload data occupying the second part of the bandwidth part of the master gateway, and send the payload data of the slave gateway 2 through the second part of the bandwidth part of the slave gateway 2. After receiving the burst frame from the gateway 3, the master gateway can recover the clock and search burst delimitation through its burst preamble, obtain payload data of the slave gateway 3, send payload data of the master gateway itself (i.e. payload 2) through the upstream bandwidth corresponding to the burst overhead of the slave gateway 3, and send payload data of the slave gateway 3 through the second part of the bandwidth part of the slave gateway 3.

Based on this, the master gateway sends payload data of the master gateway, the slave gateway 2 and the slave gateway 3 to the OLT through the second parts of the three burst frames, and may occupy burst overhead in the burst frames of the slave gateway 2 and the slave gateway 3 to transmit uplink data of the master gateway.

Compared with the traditional transmission mode of 3 burst frames which reach the OLT and are used for generating 3 burst overheads, the transmission mode provided by the embodiment of the application can be used for synthesizing 3 burst frames of the master gateway, the slave gateway 2 and the slave gateway 3 as 3 burst subframes into 1 large burst frame, so that 1 large burst frame which reaches the OLT and is used for generating 1 burst overheads is realized, the 1 large burst frame comprises payload data transmitted by the master gateway in two burst overheads of the slave gateway 2 and the slave gateway 3, namely, the uplink bandwidth corresponding to the two burst overheads is replaced by the payload data of the load-bearing master gateway by the load-bearing burst overheads.

In yet another possible example, as shown in fig. 15, a schematic structural diagram of yet another burst frame is provided in an embodiment of the present application. It is assumed that the slave gateway 1, the slave gateway 2, and the slave gateway 3 are connected to the master gateway. The plurality of gateways includes a master gateway, and a slave gateway 1 and a slave gateway 3 to which the master gateway is connected. The OLT does not currently allocate upstream bandwidth to the slave gateway 2, but may allocate upstream bandwidth of a non-first bandwidth portion to the slave gateway 2, the processing logic of which is the same as that of the slave gateways 2, 3.

The bandwidth part corresponding to the slave gateway 1 is the first bandwidth part on the transmission bandwidth, and the bandwidth part corresponding to the master gateway and the bandwidth part corresponding to the slave gateway 3 are the non-first bandwidth parts on the transmission bandwidth.

The OLT may allocate three consecutive bandwidth portions to the slave gateway 1, the master gateway and the slave gateway 3 to aggregate these upstream bandwidths. Each bandwidth part comprises a burst overhead part and a payload carrying part, wherein the burst overhead corresponding part of the bandwidth is implicitly allocated, i.e. reserved by the OLT, the payload carrying part is explicitly allocated, and by BWmap allocation, the OLT also informs the primary gateway through R-bit position 1 of the OC body that a first part of the transmission bandwidth, which is not the first bandwidth part, is available. After receiving the first message from the OLT, the primary gateway may parse the first message to obtain the bandwidth allocation information, and store the bandwidth allocation information locally. And the main gateway can determine that the three bandwidth parts are continuous uplink bandwidths according to the end-to-end connection of the start-stop positions of the three bandwidth parts. The protection time length of the general Burst overhead is specified in the standard, the Burst preamble and the Burst delimitation are configured by the OLT through the burst_profile message and the flag in the BWmap, so that the master gateway is configured by acquiring the first part length belonging to its own bandwidth part, and the first part length of the slave gateway bandwidth part in the belonging network, and the size and start-stop position of the corresponding bandwidth part are formed with the corresponding payload carrying part. And, the master gateway may determine that the bandwidth portions of the master gateway and the slave gateway 3 are continuous bandwidth portions other than the first bandwidth portion, and may occupy burst overhead of the master gateway and the slave gateway 3 to transmit uplink data. Or the burst overhead corresponding part of the bandwidth from the gateway 1 may be implicitly allocated, i.e. reserved by the OLT, the payload carrying part is explicitly allocated, by BWmap allocation. The bandwidths corresponding to the burst overhead portions of the master gateway and the slave gateway 3 are explicitly allocated to the master gateway, and the bandwidths of the bearer payload portions of the slave gateway 1, the master gateway and the slave gateway 3 are explicitly allocated to the slave gateway 1, the master gateway and the slave gateway 3, respectively.

The master gateway may send indication information to the slave gateway 1 and the slave gateway 3, respectively, to correspond to the bandwidth portions allocated by the indication OLT, respectively, wherein the burst overhead corresponds to the portion of bandwidth being implicitly allocated, i.e. reserved by the master gateway, the payload carrying portion being explicitly allocated, by BWmap allocation. The slave gateway 1 and the slave gateway 3 can parse the indication information to obtain respective bandwidth portions. Based on this, the master gateway, the slave gateway 1 and the slave gateway 3 can each transmit burst frames in the allocated bandwidth portion. Each burst frame may include burst overhead and payload data. After receiving the burst frames from the gateway 1 and the slave gateway 3, the master gateway can recover the clock and search burst delimitation through its respective burst preamble, and acquire payload data of the slave gateway 1 and the slave gateway 3.

As shown in fig. 15, in the conventional upstream transmission scheme, even if the portions of the bandwidth allocated by the OLT to the slave gateway 1, the master gateway, and the slave gateway 3 are continuous. However, when the master gateway transmits burst data to the OLT in the burst mode, in addition to the burst overhead transmission synchronization data occupying a part of its bandwidth, it is still necessary to transmit burst overheads within the upstream bandwidths of the slave gateway 1 and the slave gateway 3, respectively, when forwarding the upstream data of the slave gateway 1 and the slave gateway 3 to the OLT.

Fig. 16 is a schematic diagram of a burst frame according to another embodiment of the present application. In the transmission mode provided by the application, after receiving the burst frame from the gateway 1, the main gateway can recover the clock and search burst delimitation through the burst preamble in the burst overhead (namely the first part) of the main gateway, acquire the payload data of the slave gateway 1, forward the protection time, the burst preamble, the burst delimitation and the like to the OLT, and forward the payload data of the slave gateway 1. The primary gateway may then occupy its bandwidth portion to send its payload data to the OLT. After receiving the burst frame from the gateway 3, the master gateway can recover the clock and search burst delimitation through its burst preamble, obtain the payload data of the slave gateway 3, send the payload data of the master gateway itself through the uplink bandwidth corresponding to the burst overhead of the slave gateway 3, and send the payload data of the slave gateway 3 through the second part of the bandwidth part of the slave gateway 3. In this case, the master gateway may transmit the payload 3 through its burst overhead portion of the bandwidth portion, the payload carrying portion, and the burst overhead portion of the bandwidth portion of the slave gateway 3.

Based on the above, the master gateway sends payload data of the slave gateway 1, the master gateway and the slave gateway 3 to the OLT through the second parts of the three burst frames, and can occupy burst overhead in the burst frames of the master gateway and the slave gateway 3 to transmit uplink data of the master gateway.

Compared with the traditional transmission mode of 3 burst frames which reach the OLT and are used for generating 3 burst overheads, the transmission mode provided by the embodiment of the application can be used for synthesizing 3 burst frames of the master gateway, the slave gateway 2 and the slave gateway 3 as 3 burst subframes into 1 large burst frame, so that 1 large burst frame which reaches the OLT and is used for generating 1 burst overheads is realized, the 1 large burst frame comprises payload data transmitted by the master gateway in two burst overheads of the master gateway and the slave gateway 3, namely, the uplink bandwidth corresponding to the two burst overheads is replaced by the payload data of the load-bearing master gateway by the load-bearing burst overheads.

In yet another possible example, as shown in fig. 17, a schematic structural diagram of yet another burst frame is provided in an embodiment of the present application. It is assumed that the slave gateway 1, the slave gateway 2, and the slave gateway 3 are connected to the master gateway. The plurality of gateways includes a master gateway, and a slave gateway 1 and a slave gateway 2 to which the master gateway is connected. The OLT does not currently allocate upstream bandwidth to the slave gateway 3, but may allocate upstream bandwidth of a non-first bandwidth portion to the slave gateway 3, the processing logic of which is the same as that of the slave gateways 1, 2.

The bandwidth portion corresponding to the slave gateway 1 is the first bandwidth portion on the transmission bandwidth, and the bandwidth portion corresponding to the slave gateway 2 and the bandwidth portion corresponding to the master gateway are the non-first bandwidth portions on the transmission bandwidth.

The OLT may allocate three consecutive bandwidth portions to the slave gateway 1, the slave gateway 2 and the master gateway to aggregate these upstream bandwidths. Each bandwidth part comprises a burst overhead part and a payload carrying part, wherein the burst overhead corresponding part of the bandwidth is implicitly allocated, i.e. reserved by the OLT, the payload carrying part is explicitly allocated, and by BWmap allocation, the OLT also informs the primary gateway through R-bit position 1 of the OC body that a first part of the transmission bandwidth, which is not the first bandwidth part, is available. After receiving the first message from the OLT, the primary gateway may parse the first message to obtain the bandwidth allocation information, and store the bandwidth allocation information locally. And the main gateway can determine that the three bandwidth parts are continuous uplink bandwidths according to the end-to-end connection of the start-stop positions of the three bandwidth parts. The protection time length of the general Burst overhead is specified in the standard, the Burst preamble and the Burst delimitation are configured by the OLT through the burst_profile message and the flag in the BWmap, so that the master gateway is configured by acquiring the first part length belonging to its own bandwidth part, and the first part length of the slave gateway bandwidth part in the belonging network, and the size and start-stop position of the corresponding bandwidth part are formed with the corresponding payload carrying part. And, the master gateway may determine that the bandwidth portions of the slave gateway 2 and the master gateway are continuous bandwidth portions other than the first bandwidth portion, and may occupy burst overhead of the slave gateway 2 and the master gateway to transmit uplink data. Or the burst overhead corresponding part of the bandwidth from the gateway 1 may be implicitly allocated, i.e. reserved by the OLT, the payload carrying part is explicitly allocated, by BWmap allocation. The bandwidths corresponding to the burst overhead portions of the master gateway and the slave gateway 2 are explicitly allocated to the master gateway, and the bandwidths of the bearer payload portions of the slave gateway 1, the slave gateway 2 and the master gateway are explicitly allocated to the slave gateway 1, the slave gateway 2 and the master gateway, respectively.

The master gateway may send indication information to the slave gateway 1 and the slave gateway 2, respectively, to correspond to the bandwidth portions allocated by the indication OLT, respectively, wherein the burst overhead corresponds to the portion of bandwidth being implicitly allocated, i.e. reserved by the master gateway, the payload carrying portion being explicitly allocated, by BWmap allocation. The slave gateway 1 and the slave gateway 2 can parse the indication information to obtain respective bandwidth portions. Based on this, the slave gateway 1, the slave gateway 2 and the master gateway can each transmit burst frames in the allocated bandwidth portion. Each burst frame may include burst overhead and payload data. After receiving the burst frames from the gateway 1 and the slave gateway 2, the master gateway can recover the clock through its respective burst preamble and search for burst delimitations to acquire payload data of the slave gateway 1 and the slave gateway 2.

As shown in fig. 17, in the conventional upstream transmission scheme, even if the portions of the bandwidth allocated by the OLT to the slave gateway 1, the slave gateway 2, and the master gateway are continuous. However, when the master gateway transmits burst data to the OLT in the burst mode, in addition to the burst overhead transmission synchronization data occupying a part of its bandwidth, when forwarding the uplink data of the slave gateway 1 and the slave gateway 2 to the OLT, it is still necessary to transmit burst overheads within the uplink bandwidths of the slave gateway 1 and the slave gateway 2, respectively.

Fig. 18 is a schematic diagram of a burst frame according to another embodiment of the present application. In the transmission mode provided by the application, after receiving the burst frame from the gateway 1, the main gateway can recover the clock and search burst delimitation through the burst preamble in the burst overhead (namely the first part) of the main gateway, acquire the payload data of the slave gateway 1, forward the protection time, the burst preamble, the burst delimitation and the like to the OLT, and forward the payload data of the slave gateway 1. After receiving the burst frame from gateway 2, the master gateway can recover the clock and search burst delimitation through its burst preamble, obtain payload data of slave gateway 2, send payload data of the master gateway itself (i.e. payload 4) through the upstream bandwidth corresponding to the burst overhead of slave gateway 2, and send payload data of slave gateway 2 through the second part of the bandwidth part of slave gateway 2. The primary gateway may then send its payload data (i.e., payload 5) to the OLT occupying its bandwidth portion.

Based on this, the primary gateway sends payload data of the secondary gateway 1, the secondary gateway 2 and the primary gateway to the OLT through the second parts of the three burst frames, and may occupy burst overhead in the burst frames of the secondary gateway 2 and the primary gateway to transmit uplink data of the primary gateway.

Compared with the traditional transmission mode of 3 burst frames which reach the OLT and are used for generating 3 burst overheads, the transmission mode provided by the embodiment of the application can combine 3 burst frames of the slave gateway 1, the slave gateway 2 and the master gateway as 3 burst subframes into 1 large burst frame, so that 1 large burst frame which reaches the OLT and is used for generating 1 burst overheads is realized, the 1 large burst frame comprises payload data transmitted by the master gateway in two burst overheads of the slave gateway 2 and the master gateway, namely, the uplink bandwidth corresponding to the two burst overheads is replaced by the payload data of the load-bearing master gateway by the load-bearing burst overheads.

In an embodiment, in case that the plurality of gateways includes a primary gateway, in order to support the OLT to obtain payload data of the complete primary gateway, an embodiment of the present application provides an optional implementation manner, which includes: and C, a step of.

Step C, OLT, under the condition that the plurality of gateways include the main gateway, assembling the first payload data transmitted on the first part of all the non-first bandwidth parts and the second payload data transmitted on the second part of the bandwidth parts corresponding to the main gateway, so as to obtain the payload data of the main gateway.

In a possible example, when the olt receives upstream data within the transmission bandwidth in conjunction with the above-mentioned fig. 16, first, the olt recovers the clock and searches burst delimiters by burst preambles within the burst overhead corresponding to the slave gateway 1, and continuously receives the second payload data of the slave gateway 1 in the second portion of the bandwidth portion of the slave gateway 1, the first payload data of the master gateway in the first portion of the bandwidth portion of the master gateway, the second payload data of the master gateway in the second portion of the bandwidth portion of the master gateway, the first payload data of the master gateway in the first portion of the bandwidth portion of the slave gateway 3, and the second payload data of the slave gateway 3 in the second portion of the bandwidth portion of the slave gateway 3.

In this case, the OLT may combine the first payload data received in the first part of the bandwidth part of the primary gateway, the second payload data received in the second part of the bandwidth part of the primary gateway, and the first payload data received in the first part of the bandwidth part of the secondary gateway 3 to obtain the payload data of the primary gateway, i.e. the payload 3.

In a possible example, when the olt receives upstream data in the transmission bandwidth in conjunction with the above-mentioned fig. 18, first, the olt recovers the clock and searches burst delimitation by burst preamble in burst overhead corresponding to the slave gateway 1, and continuously receives the second payload data of the slave gateway 1 in the second portion of the bandwidth portion of the slave gateway 1, the first payload data of the master gateway in the first portion of the bandwidth portion of the slave gateway 2, the second payload data of the slave gateway 2 in the second portion of the bandwidth portion of the slave gateway 2, the first payload data of the master gateway in the first portion of the bandwidth portion of the master gateway, and the second payload data of the master gateway in the second portion of the bandwidth portion of the master gateway.

In this case, the OLT may combine the first payload data received in the first part of the bandwidth part of the gateway 2, the first payload data received in the first part of the bandwidth part of the main gateway, and the second payload data received in the second part of the bandwidth part of the main gateway, i.e. the payload 4 and the payload 5, to obtain the payload data of the main gateway.

In an embodiment, in case that the plurality of gateways does not include the primary gateway, in order to support the OLT to obtain payload data of the complete primary gateway, an embodiment of the present application provides an alternative implementation, which includes: and D, a step of.

Step D, OLT, under the condition that the plurality of gateways do not include the main gateway, assembles the first payload data transmitted on the first part of all the non-first bandwidth parts to obtain the payload data of the main gateway.

In a possible example, when the olt receives upstream data within the transmission bandwidth in conjunction with the above-mentioned fig. 11, first the olt recovers the clock and searches burst delimitation by burst preamble within the burst overhead corresponding to the slave gateway 1, and continuously receives the second payload data of the slave gateway 1 in the second part of the bandwidth part of the slave gateway 1, the first payload data of the master gateway in the first part of the bandwidth part of the slave gateway 2, the second payload data of the slave gateway 2 in the second part of the bandwidth part of the slave gateway 2, the first payload data of the master gateway in the first part of the bandwidth part of the slave gateway 3, and the second payload data of the slave gateway 3 in the second part of the bandwidth part of the slave gateway 3.

In this case, the OLT may combine the first payload data received from the first part of the bandwidth part of the gateway 2 with the first payload data received from the first part of the bandwidth part of the gateway 3 to obtain the payload data of the main gateway.

In a possible example, when the olt receives uplink data in the transmission bandwidth in conjunction with the above-mentioned fig. 14, first, the olt recovers the clock and searches burst delimitation by burst preamble in the burst overhead corresponding to the master gateway, and continuously receives the second payload data of the master gateway in the second portion of the bandwidth portion of the master gateway, the first payload data of the master gateway in the first portion of the bandwidth portion of the slave gateway 2, the second payload data of the slave gateway 2 in the second portion of the bandwidth portion of the slave gateway 2, the first payload data of the master gateway in the first portion of the bandwidth portion of the slave gateway 3, and the second payload data of the slave gateway 3 in the second portion of the bandwidth portion of the slave gateway 3.

In this case, the OLT may combine the second payload data of the primary gateway received in the second part of the bandwidth part of the primary gateway, the first payload data received in the first part of the bandwidth part of the secondary gateway 2, and the first payload data received in the first part of the bandwidth part of the secondary gateway 3, i.e. combine payload 1 and payload 2, resulting in payload data of the primary gateway.

It will be appreciated that, in order to achieve the above-mentioned functions, the primary gateway and the optical line terminal in the networking system include corresponding hardware structures and/or software modules for performing the respective functions. Those skilled in the art will readily appreciate that the algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional modules of the main gateway and the optical line terminal in the networking system according to the embodiment of the method, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one functional module. The integrated modules may be implemented in hardware or software. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will take an example of dividing each function module into corresponding functions.

Fig. 19 shows a schematic configuration of a data transmission apparatus 200 in the case where respective functional blocks are divided in correspondence with respective functions in the form of software. As shown in fig. 19, the data transmission apparatus 200 may include: a transmitting module 1301. The data transmission apparatus 200 may be applied to a primary gateway in the networking system shown in fig. 4, for performing the data transmission method performed by the primary gateway in the above-described method embodiment.

A transmitting module 1301, configured to transmit a burst frame to an optical line terminal according to a transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In a possible embodiment, the payload portion includes first payload data of the primary gateway and second payload data of each gateway of the plurality of gateways; the first payload data occupies a first portion of the other bandwidth portion; the second payload data of each gateway occupies a second portion of the transmission bandwidth corresponding to the gateway.

In one possible embodiment, the plurality of gateways includes a slave gateway; the apparatus further comprises: a receiving module 1302;

a receiving module 1302, configured to receive a burst subframe sent by the slave gateway on a bandwidth portion corresponding to the slave gateway, where the burst subframe includes a synchronization data block of the burst subframe and second payload data of the slave gateway;

the sending module 1301 is specifically configured to send the second payload data of the slave gateway on the second portion of the bandwidth portion corresponding to the slave gateway.

In a possible embodiment, the sending module 1301 is specifically configured to: transmitting first payload data of the master gateway on a first part of a bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is not the first bandwidth part in the transmission bandwidth; or in case that the bandwidth portion corresponding to the slave gateway is the first bandwidth portion of the transmission bandwidth, transmitting the synchronization data block of the burst frame on the first portion of the bandwidth portion corresponding to the slave gateway.

In a possible embodiment, the sending module 1301 is specifically configured to: under the condition that the bandwidth part corresponding to the main gateway is not the first bandwidth part in the transmission bandwidth, transmitting continuous first payload data and second payload data of the main gateway on the first part and the second part of the bandwidth part corresponding to the main gateway; or if the bandwidth part corresponding to the main gateway is the first bandwidth part in the transmission bandwidth, transmitting the synchronous data block of the burst frame on the first part of the bandwidth part corresponding to the main gateway, and transmitting the second payload data of the main gateway on the second part of the bandwidth part corresponding to the main gateway.

In a possible embodiment, the sending module 1301 is specifically configured to: transmitting first payload data of the master gateway, which is continuous with second payload data of the master gateway, on a first portion of the bandwidth portion corresponding to the slave gateway, in a case where the second portion of the bandwidth portion corresponding to the master gateway is continuous with the first portion of the bandwidth portion corresponding to the slave gateway; and transmitting the first payload data of the master gateway, which is discontinuous with the second payload data of the master gateway, on the first portion of the bandwidth portion corresponding to the slave gateway, in the case that the second portion of the bandwidth portion corresponding to the master gateway and the first portion of the bandwidth portion corresponding to the slave gateway are discontinuous.

In a possible embodiment, the apparatus further comprises a processing module 1303. A processing module 1303, configured to split payload data of the primary gateway into third payload data and other first payload data in a case where the plurality of gateways includes the primary gateway; the third payload data comprises second payload data of the main gateway and first payload data of which the occupied first part is continuous with the second part of the bandwidth part corresponding to the main gateway; the other first payload data are used for representing discontinuous first payload data of a second part of the occupied first part of the bandwidth part corresponding to the main gateway;

the processing module 1303 is further configured to split payload data of the primary gateway into first payload data corresponding to a first portion of each non-first bandwidth portion, where the plurality of gateways does not include the primary gateway.

In a possible embodiment, the receiving module 1302 is further configured to receive a first message sent by the optical line terminal, obtain a plurality of continuous bandwidth portions indicated by the first message, and perform data transmission according to the indication of the optical line terminal by using a first portion other than the first bandwidth portion in the transmission bandwidth.

In a possible embodiment, the first message includes first indication information and second indication information; the first indication information is used for indicating the start-stop positions of the second part of the bandwidth part corresponding to each gateway; the second indication information is used for indicating the required bandwidth of the synchronous data block; the receiving module 1302 is specifically configured to: determining the start and stop positions of each bandwidth part according to the first indication information and the second indication information; the starting position of the bandwidth part is a position which is separated from the starting position of the second part of the bandwidth part by a required bandwidth, and the ending position of the bandwidth part is an ending position of the second part of the bandwidth part; when the start and stop positions of the respective bandwidth portions are continuous, a plurality of continuous bandwidth portions are obtained.

In a possible embodiment, the first message further includes third indication information, where the third indication information is used to indicate a start-stop position of the first part of the other bandwidth part corresponding to the primary gateway; the receiving module 1302 is specifically configured to: when the start-stop position of the second part of the bandwidth part corresponding to each gateway is continuous with the start-stop position of the first part of the other bandwidth part, a plurality of continuous bandwidth parts are obtained.

In a possible embodiment, the sending module 1301 is further configured to send a second message to a slave gateway among the plurality of gateways; the second message comprises second indication information and fourth indication information; the second indication information is used for indicating the required bandwidth of the synchronous data block; the fourth indication information is used for indicating the start-stop position of the second part of the bandwidth part corresponding to the gateway. Fig. 20 shows a schematic configuration of a further data transmission device 300 in the case of dividing respective functional modules corresponding to respective functions in the form of software. As shown in fig. 20, the data transmission apparatus 300 may include: and a receiving module 1401. The data transmission apparatus 300 may be applied to an optical line terminal in the networking system of fig. 4, for performing the data transmission method performed by the optical line terminal in the above-described method embodiment.

A receiving module 1401, configured to receive a burst frame sent by a primary gateway according to a transmission bandwidth; the transmission bandwidth includes a plurality of contiguous bandwidth portions configured for a plurality of gateways; the synchronous data block of the burst frame occupies a first part of a first bandwidth part of the plurality of bandwidth parts; the payload portion of the burst frame occupies a second portion of the first bandwidth portion and other bandwidth portions of the plurality of bandwidth portions other than the first bandwidth portion.

In a possible embodiment, the apparatus further comprises: a transmission module 1402;

A sending module 1402, configured to send a first message to a primary gateway, where the first message is configured to instruct a plurality of continuous bandwidth parts configured for a plurality of gateways in a network where the primary gateway is located, and instruct the primary gateway to use a first part of other bandwidth parts for data transmission.

In a possible embodiment, the first message includes first indication information and second indication information; the first indication information is used for indicating the start-stop positions of the second part of the bandwidth part corresponding to each gateway; the second indication information is used to indicate a required bandwidth of the synchronization data block.

In a possible embodiment, the first message further includes third indication information, where the third indication information is used to indicate a start-stop position of the first part of the other bandwidth part corresponding to the primary gateway.

In one possible embodiment, the plurality of gateways includes a slave gateway; the receiving module 1401 is specifically configured to:

and receiving second payload data of the slave gateway, which is sent by the master gateway, on a second part of the bandwidth part corresponding to the slave gateway.

In a possible embodiment, the receiving module 1401 is specifically configured to: receiving first payload data of a master gateway sent by the master gateway on a first part of a bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is not the first bandwidth part in the transmission bandwidth; or receiving the synchronous data block of the burst frame sent by the master gateway on the first part of the bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is the first bandwidth part in the transmission bandwidth.

In a possible embodiment, the multiple gateways further include a primary gateway, and the receiving module 1401 is specifically configured to: receiving first payload data and second payload data of a main gateway sent by a continuous main gateway on a first part and a second part of a bandwidth part corresponding to the main gateway under the condition that the bandwidth part corresponding to the main gateway is a non-first bandwidth part in a transmission bandwidth; or under the condition that the bandwidth part corresponding to the main gateway is the first bandwidth part in the transmission bandwidth, receiving the synchronous data block of the burst frame sent by the main gateway on the first part of the bandwidth part corresponding to the main gateway, and receiving the second payload data of the main gateway sent by the main gateway on the second part of the bandwidth part corresponding to the main gateway.

In a possible embodiment, the receiving module 1401 is specifically configured to: receiving first payload data of the master gateway, which is continuous with second payload data of the master gateway, on a first portion of the bandwidth portion corresponding to the slave gateway, in a case where the second portion of the bandwidth portion corresponding to the master gateway is continuous with the first portion of the bandwidth portion corresponding to the slave gateway; in the case where the second portion of the bandwidth portion corresponding to the master gateway and the first portion of the bandwidth portion corresponding to the slave gateway are discontinuous, first payload data of the master gateway that is discontinuous with second payload data of the master gateway is received at the first portion of the bandwidth portion corresponding to the slave gateway.

In a possible embodiment, the apparatus further comprises: a processing module 1403;

A processing module 1403 is configured to, in a case where the plurality of gateways includes a primary gateway, assemble first payload data transmitted on a first portion of all non-first bandwidth portions and second payload data transmitted on a second portion of the bandwidth portion corresponding to the primary gateway, to obtain payload data of the primary gateway. In a possible embodiment, the processing module 1403 is further configured to, in a case where the plurality of gateways does not include the primary gateway, assemble the first payload data transmitted on the first portion of all non-first bandwidth portions to obtain payload data of the primary gateway.

In case of implementing the functions of the integrated modules described above in the form of hardware, the embodiment of the present application provides another possible structure of the data transmission device referred to in the above embodiment. As shown in fig. 21, as a data transmission apparatus, the data transmission apparatus 400 may include: a processor 1501, a bus 1504. Optionally, the data transmission device 400 may further include a memory 1502; optionally, the data transmission device 400 may further comprise a communication interface 1503.

For example, some or all of the functions of the transmitting module 1301, the receiving module 1302, the processing module 1303, and the like included in the data transmission apparatus 200 in fig. 19 described above may be implemented by the processor 1501. As another example, some or all of the functions of the modules such as the receiving module 1401, the transmitting module 1402, and the processing module 1403 included in the data transmission apparatus 300 in fig. 20 may be implemented by the processor 1501.

The processor 1501 may be any variety of logic blocks, modules, and circuits that implement or perform the various exemplary logic blocks, modules, and circuits described in connection with embodiments of the present application. The processor 1501 may be a central processor, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with embodiments of the application. The processor 1501 may also be a combination of computing functions, e.g., including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

A communication interface 1503 for connecting with other devices via a communication network. The communication network may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN), etc.

The memory 1502 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As a possible implementation, the memory 1502 may exist separately from the processor 1501, and the memory 1502 may be connected to the processor 1501 through the bus 1504 for storing instructions or program code. The processor 1501, when calling and executing instructions or program code stored in the memory 1502, can implement the data transmission method provided by the embodiment of the present application.

In another possible implementation, the memory 1502 may also be integrated with the processor 1501.

Bus 1504, which may be an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus 1504 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 21, but not only one bus or one type of bus.

Some embodiments of the present application provide a computer readable storage medium (e.g., a non-transitory computer readable storage medium) having stored therein computer program instructions which, when run on a computer, cause the computer to perform a data transmission method as described in any of the above embodiments.

By way of example, the computer-readable storage media described above can include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk or tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (DIGITAL VERSATILE DISK, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.).

Various computer-readable storage media described herein can represent one or more devices and/or other machine-readable storage media for storing information.

The term "machine-readable storage medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

An embodiment of the present application provides a computer program product containing instructions, which when run on a computer, cause the computer to perform the data transmission method according to any of the above embodiments.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A data transmission method, applied to a primary gateway, comprising:

2. The method of claim 1, wherein the payload portion comprises first payload data of the primary gateway and second payload data of each gateway of the plurality of gateways; the first payload data occupies a first portion of the other bandwidth portion; the second payload data of each gateway occupies a second portion of the transmission bandwidth corresponding to the gateway.

3. The method of claim 2, wherein the plurality of gateways comprises slave gateways; the method further comprises the steps of:

Receiving a burst subframe sent by the slave gateway on a bandwidth part corresponding to the slave gateway, wherein the burst subframe comprises a synchronous data block of the burst subframe and second payload data of the slave gateway;

the sending the burst frame to the optical line terminal according to the transmission bandwidth includes:

And sending second payload data of the slave gateway on a second part of the bandwidth part corresponding to the slave gateway.

4. The method of claim 3, wherein the transmitting the burst frame to the optical line terminal according to the transmission bandwidth further comprises:

transmitting first payload data of the master gateway on a first part of a bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is not the first bandwidth part in the transmission bandwidth; or alternatively

And transmitting the synchronous data block of the burst frame on the first part of the bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is the first bandwidth part in the transmission bandwidth.

5. The method of claim 3, wherein the plurality of gateways further comprises the master gateway, wherein the transmitting burst frames to the optical line terminal according to the transmission bandwidth further comprises:

transmitting continuous first payload data and second payload data of the main gateway on a first part and a second part of a bandwidth part corresponding to the main gateway under the condition that the bandwidth part corresponding to the main gateway is a non-first bandwidth part in the transmission bandwidth; or alternatively

And under the condition that the bandwidth part corresponding to the main gateway is the first bandwidth part in the transmission bandwidth, transmitting the synchronous data block of the burst frame on the first part of the bandwidth part corresponding to the main gateway, and transmitting the second payload data of the main gateway on the second part of the bandwidth part corresponding to the main gateway.

6. The method of claim 5, wherein the transmitting the burst frame to the optical line terminal according to the transmission bandwidth further comprises:

Transmitting first payload data of the master gateway, which is continuous with second payload data of the master gateway, on a first portion of a bandwidth portion corresponding to the slave gateway, in a case where the second portion of the bandwidth portion corresponding to the master gateway is continuous with the first portion of the bandwidth portion corresponding to the slave gateway;

And sending the first payload data of the master gateway, which is discontinuous with the second payload data of the master gateway, on the first part of the bandwidth part corresponding to the slave gateway under the condition that the second part of the bandwidth part corresponding to the master gateway and the first part of the bandwidth part corresponding to the slave gateway are discontinuous.

7. The method according to claim 2, wherein the method further comprises:

Splitting payload data of the primary gateway into third payload data and other first payload data in the case that the plurality of gateways includes the primary gateway; the third payload data comprises second payload data of the main gateway and first payload data of which the occupied first part is continuous with a second part of the bandwidth part corresponding to the main gateway; the other first payload data are used for representing first payload data of which the occupied first part is discontinuous with a second part of the bandwidth part corresponding to the main gateway;

Splitting payload data of the primary gateway into first payload data corresponding to a first portion of each non-first bandwidth portion, if the plurality of gateways does not include the primary gateway.

8. The method according to claim 1, wherein the method further comprises:

And receiving a first message sent by the optical line terminal, acquiring the continuous multiple bandwidth parts indicated by the first message, and carrying out data transmission by using a first part of the non-first bandwidth part in the transmission bandwidth according to the indication of the optical line terminal.

9. The method of claim 8, wherein the first message comprises first indication information and second indication information; the first indication information is used for indicating the start-stop positions of the second part of the bandwidth part corresponding to each gateway; the second indication information is used for indicating the required bandwidth of the synchronous data block; the obtaining the plurality of consecutive bandwidth parts indicated by the first message includes:

Determining the start and stop positions of the bandwidth parts according to the first indication information and the second indication information; the starting position of the bandwidth part is a position which is separated from the starting position of the second part of the bandwidth part by the required bandwidth, and the ending position of the bandwidth part is an ending position of the second part of the bandwidth part;

and obtaining continuous multiple bandwidth parts under the condition that the start-stop positions of the bandwidth parts are continuous.

10. The method of claim 9, wherein the first message further includes third indication information, the third indication information being used to indicate a start-stop position of a first portion of the other bandwidth portion corresponding to the primary gateway.

11. The method as recited in claim 9, further comprising:

Sending a second message to a slave gateway of the plurality of gateways; the second message comprises the second indication information and fourth indication information; the second indication information is used for indicating the required bandwidth of the synchronous data block; the fourth indication information is used for indicating the start-stop position of the second part of the bandwidth part corresponding to the slave gateway.

12. A data transmission method, applied to an optical line terminal, the method comprising:

13. The method of claim 12, wherein the payload portion comprises first payload data of the primary gateway and second payload data of each gateway of the plurality of gateways; the first payload data occupies a first portion of the other bandwidth portion; the second payload data of each gateway occupies a second portion of the transmission bandwidth corresponding to the gateway.

14. The method of claim 13, wherein the method further comprises:

And sending a first message to the main gateway, wherein the first message is used for indicating a plurality of continuous bandwidth parts configured for a plurality of gateways in a network where the main gateway is located and indicating the main gateway to use the first parts of other bandwidth parts for data transmission.

15. The method of claim 14, wherein the first message comprises first indication information and second indication information; the first indication information is used for indicating the start-stop positions of the second part of the bandwidth part corresponding to each gateway; the second indication information is used for indicating the required bandwidth of the synchronous data block.

16. The method of claim 15, wherein the first message further includes third indication information, the third indication information being used to indicate a start-stop position of a first portion of the other bandwidth portion corresponding to the primary gateway.

17. The method of claim 13, wherein the plurality of gateways comprises slave gateways; the receiving the burst frame sent by the main gateway according to the transmission bandwidth includes:

18. The method of claim 17, wherein receiving the burst frame transmitted by the primary gateway according to the transmission bandwidth further comprises:

Receiving first payload data of the master gateway sent by the master gateway on a first part of a bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is not the first bandwidth part in the transmission bandwidth; or alternatively

And receiving the synchronous data block of the burst frame sent by the master gateway on the first part of the bandwidth part corresponding to the slave gateway under the condition that the bandwidth part corresponding to the slave gateway is the first bandwidth part in the transmission bandwidth.

19. The method of claim 17, wherein the plurality of gateways further comprises the primary gateway, wherein the receiving the burst frame sent by the primary gateway according to the transmission bandwidth further comprises:

Receiving continuous first payload data and second payload data of the main gateway sent by the main gateway on a first part and a second part of a bandwidth part corresponding to the main gateway under the condition that the bandwidth part corresponding to the main gateway is not the first bandwidth part in the transmission bandwidth; or alternatively

And under the condition that the bandwidth part corresponding to the main gateway is the first bandwidth part in the transmission bandwidth, receiving the synchronous data block of the burst frame sent by the main gateway on the first part of the bandwidth part corresponding to the main gateway, and receiving the second payload data of the main gateway sent by the main gateway on the second part of the bandwidth part corresponding to the main gateway.

20. The method of claim 19, wherein receiving the burst frame transmitted by the primary gateway according to the transmission bandwidth further comprises:

receiving first payload data of the master gateway, which is continuous with second payload data of the master gateway, on a first portion of the bandwidth portion corresponding to the slave gateway, in a case where the second portion of the bandwidth portion corresponding to the master gateway and the first portion of the bandwidth portion corresponding to the slave gateway are continuous;

And receiving the first payload data of the master gateway, which is discontinuous with the second payload data of the master gateway, at the first part of the bandwidth part corresponding to the slave gateway, in the case that the second part of the bandwidth part corresponding to the master gateway and the first part of the bandwidth part corresponding to the slave gateway are discontinuous.

21. The method of claim 13, wherein the method further comprises:

And under the condition that the plurality of gateways comprise the main gateway, assembling the first payload data transmitted on the first part of all the non-first bandwidth parts and the second payload data transmitted on the second part of the bandwidth parts corresponding to the main gateway to obtain the payload data of the main gateway.

22. The method of claim 13, wherein the method further comprises:

And under the condition that the plurality of gateways do not comprise the main gateway, assembling the first payload data transmitted on the first part of all the non-first bandwidth parts to obtain the payload data of the main gateway.

23. A data transmission apparatus, comprising: a memory and a processor; the memory is coupled to the processor; the memory is used for storing instructions executable by the processor; the processor, when executing the instructions, performs the method of any one of claims 1-11 or performs the method of any one of claims 12-22.

24. A computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-11 or cause the computer to perform the method of any of claims 12-22.