CN111435898A

CN111435898A - Signal transmission method and device and network equipment

Info

Publication number: CN111435898A
Application number: CN201910032224.3A
Authority: CN
Inventors: 陶程; 王春光; 王科; 刘子超
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2020-07-21
Anticipated expiration: 2039-01-14
Also published as: WO2020147661A1; CN111435898B

Abstract

The application discloses a signal transmission method, a signal transmission device and network equipment, wherein the method comprises the following steps: mapping a data service of a client side into a first type frame, and mapping the first type frame into a second type frame through GMP (good manufacturing practice), wherein the GMP mapping is based on a time slot as a unit for mapping; the overhead of the second type of frame comprises a JC field, and the JC field is used for transmitting target parameters of the data service; and sending the target parameters of the data service to a clock chip through the overhead of the second type of frame, wherein the target parameters are used for recovering a reference clock of a client side by the clock chip.

Description

Signal transmission method and device and network equipment

Technical Field

The present application relates to optical transmission technologies, and in particular, to a signal transmission method and apparatus for a 5G-bearing optical network, and a network device.

Background

With the rapid development of the application of the internet and the mobile internet, a plurality of countries around the world have competitively developed the technical development of the fifth Generation (5G, 5th Generation) network, and both china and the european union invest a great deal of capital and research and development force for the technology development. 5G commercial services are expected to be started in 2020. According to 5G propulsion work deployment proposed by departments such as the Ministry of industry and communications and 5G commercial plans of three operators, the China develops a second-stage test of a 5G network in 2017, performs large-scale test networking in 2018, starts 5G network construction in 2019 on the basis of the test, and formally launches commercial services in 2020 fastest time.

In the usage scenario of an Optical Transport Network (OTN) for a 5G bearer, there are higher requirements for data transmission delay and jitter. In the OTN mapping manner, delay caused by generally-used General Mapping Procedure (GMP) mapping has a close relationship with the amount of data buffered in a First-in First-out (FIFO), in the previous low-speed service processing, the FIFO bit width is low, and in a 5G-supported system, the data processing bit width is greatly increased, and according to the original processing manner, the amount of data buffered in the FIFO is large, and the corresponding delay amount is large, so that the requirement for supporting low delay in the 5G system cannot be met.

Content of application

In order to solve the foregoing technical problem, embodiments of the present application provide a signal transmission method and apparatus, and a network device.

The signal transmission method provided by the embodiment of the application comprises the following steps:

mapping a data service of a client side into a first type frame, and mapping the first type frame into a second type frame through GMP (good manufacturing practice), wherein the GMP mapping is based on a time slot as a unit for mapping; the overhead of the second type of frame comprises an adjustment control JC field, wherein the JC field is used for transmitting target parameters of the data service;

and sending the target parameters of the data service to a clock chip through the overhead of the second type of frame, wherein the target parameters are used for recovering a reference clock of a client side by the clock chip.

In this embodiment of the present application, in a case that the GMP mapping is performed based on a unit of a timeslot, a calculation frequency of the GMP mapping is greater than or equal to a first threshold; and the size of the container selected by the GMP mapping is larger than or equal to a second threshold value.

In the embodiment of the application, the first type of frames obtained by mapping the data services with different rates occupy different numbers of time slots, wherein,

JC fields corresponding to all time slots occupied by the first type of frame bearing the data service transmit the size of a data container occupied by each time slot, wherein the size of the data container occupied by each time slot is k Cn/N, k is a coefficient, Cn is the target parameter, and N is the number of the time slots occupied by the first type of frame bearing the data service; alternatively, the first and second electrodes may be,

and the JC fields corresponding to all the time slots occupied by the first type of frame bearing the data service all transmit the size of the data containers occupied by the N time slots, wherein the size of the data containers occupied by the N time slots is k Cn, k is a coefficient, Cn is the target parameter, and N is the number of the time slots occupied by the first type of frame bearing the data service.

In an embodiment of the present application, the method further includes:

and when the first type of frame is mapped into a second type of frame through GMP, calculating a first parameter for generating a data envelope according to each time slot as a unit, wherein the value of the first parameter is to be rounded k Cn/N, or to be rounded k Cn.

In this embodiment, the payload portion of the second type frame is divided into T _ n _ ts slots, through the JC field in the overhead of the second type frame, every T _ n _ frame second type frame is used to transmit the target parameters of T _ n _ oh slots, and through T _ n _ frame (T _ n _ ts/T _ n _ oh) second type frames, the target parameters of T _ n _ ts slots are transmitted, wherein the update period of the JC field is T _ n _ frame (T _ n _ ts/T _ n _ oh) second type frames.

In an embodiment of the present application, the method further includes:

and in an updating period of the JC field, determining the number of time slot particles occupied by the first type of frame bearing the data service according to the transmission rate ratio of the first type of frame bearing the data service to the second type of frame.

In this embodiment of the present application, each of the second-type frames has D _ ts _ num timeslots capable of carrying service data, and the method further includes:

in N time slots occupied by the first type of frame carrying the data service, each time slot has T _ N _ frame (T _ N _ ts/T _ N _ oh) D _ ts _ num/T _ N _ ts time slot particles, and the number of the time slot particles which can be filled by the first type of frame carrying the data service is as follows:

T_n_frame*(T_n_ts/T_n_oh)*D_ts_num/T_n_ts*N；

and according to the transmission rate ratio of the first frame and the second frame which bear the data service, multiplying the time slot particle number by N to obtain the time slot particle number occupied by the first frame which bear the data service in each time slot in the updating period, and using the time slot particle number as a first parameter of a data filling envelope in the GMP mapping.

T_n_frame*(T_n_ts/T_n_oh)*D_ts_num/T_n_ts*N；

and multiplying the number of the slot particles by the transmission rate ratio of the first frame and the second frame which bear the data service to obtain the number of the slot particles which are occupied by the first frame which bear the data service in the updating period, and using the number as a first parameter of a data filling envelope in the GMP mapping.

In this embodiment of the present application, each timeslot particle occupied by the first type of frame carrying the data service performs a calculation of filling an envelope once, and when a target timeslot particle belongs to a timeslot occupied by the first type of frame carrying the data service, the data envelope in the GMP mapping is calculated once.

The signal transmission device provided by the embodiment of the application comprises:

the first mapping unit is used for mapping the data service of the client side into a first type frame;

a second mapping unit, configured to map the first-type frame into a second-type frame through GMP, where the GMP mapping is performed based on a time slot as a unit; the overhead of the second type of frame comprises a JC field, and the JC field is used for transmitting target parameters of the data service;

and the transmission unit is used for sending the target parameters of the data service to a clock chip through the overhead of the second type of frame, and the target parameters are used for recovering a reference clock at a client side by the clock chip.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program enables a computer to execute the signal transmission method.

The network device provided by the embodiment of the application comprises: the signal transmission device comprises a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the signal transmission method.

In the technical solution of the embodiment of the present application, a data service at a client side is mapped into a first type of frame, and the first type of frame is mapped into a second type of frame by GMP, where the GMP mapping is performed based on a time slot as a unit; the overhead of the second type of frame comprises a JC field, and the JC field is used for transmitting target parameters of the data service; and sending the target parameters of the data service to a clock chip through the overhead of the second type of frame, wherein the target parameters are used for recovering a reference clock of a client side by the clock chip. Therefore, when supporting various customer service accesses, smaller particles are used for filling and data judgment during GMP mapping, and the up-down jitter amplitude of a data cache fifo pipeline is reduced, so that the delay and jitter on a data transmission path are reduced; the clock is recovered by using the clock chip through the Cn information, so that the conversion of the Cn information in the digital logic is avoided, and the optimization is performed on a clock path.

Drawings

The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.

Fig. 1 is a flowchart illustrating a signal transmission method according to an embodiment of the present application;

fig. 2 is a schematic diagram illustrating signal transmission between modules according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram illustrating timeslot division in a payload of a FlexO interface frame according to an embodiment of the present application;

fig. 4 is a schematic diagram of GMP mapping sigma-delta calculation provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a signal transmission device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present application, and as shown in fig. 1, the method includes the following steps:

step 101: mapping a data service of a client side into a first type frame, and mapping the first type frame into a second type frame through GMP (good manufacturing practice), wherein the GMP mapping is based on a time slot as a unit for mapping; the overhead of the second type of frame comprises a JC field, and the JC field is used for transmitting the target parameters of the data service.

In this embodiment of the present application, the first type of frame is an oduflex frame, and the second type of frame may be referred to as a FlexO interface frame or a FlexO frame.

In the embodiment of the present application, the target parameter is Cn.

In this embodiment of the present application, in a case that the GMP mapping is performed based on a unit of a timeslot, a calculation frequency of the GMP mapping is greater than or equal to a first threshold; and the size of the container selected by the GMP mapping is larger than or equal to a second threshold value. In particular, a larger container may be selected in combination with a higher mapping calculation frequency in the GMP mapping to reduce FIFO pipelining jitter.

In the embodiment of the application, the first type of frames obtained by mapping the data services with different rates occupy different numbers of time slots, wherein JC fields corresponding to all the time slots occupied by the first type of frames bearing the data services all transmit target parameters of the data services.

In the embodiment of the present application, JC fields corresponding to all time slots occupied by a first type of frame carrying the data service all transmit target parameters of the data service, and the target parameters are implemented by the following method:

the first method is as follows: JC fields corresponding to all time slots occupied by the first type of frame bearing the data service transmit the size of a data container occupied by each time slot, wherein the size of the data container occupied by each time slot is k Cn/N, k is a coefficient, Cn is the target parameter, and N is the number of the time slots occupied by the first type of frame bearing the data service; alternatively, the first and second electrodes may be,

the second method comprises the following steps: and the JC fields corresponding to all the time slots occupied by the first type of frame bearing the data service all transmit the size of the data containers occupied by the N time slots, wherein the size of the data containers occupied by the N time slots is k Cn, k is a coefficient, Cn is the target parameter, and N is the number of the time slots occupied by the first type of frame bearing the data service.

In this embodiment of the present application, when the first-type frame is mapped to the second-type frame by GMP, a first parameter for generating a data envelope is calculated according to each timeslot as a unit, where a value of the first parameter is to round k × Cn/N, or k × Cn.

Here, the first parameter is Δ Cm.

In an embodiment, in an update period of the JC field, the number of slot particles occupied by the first type of frame carrying the data service is determined according to a transmission rate ratio of the first type of frame carrying the data service to the second type of frame.

In one embodiment, each frame of the second type has D _ ts _ num timeslots capable of carrying service data, and each timeslot has T _ N _ frame (T _ N _ ts/T _ N _ oh) × D _ ts _ num/T _ N _ ts timeslot particles within N timeslots occupied by the frame of the first type carrying the data service, and the number of the timeslot particles that can be filled in the frame of the first type carrying the data service is:

T_n_frame*(T_n_ts/T_n_oh)*D_ts_num/T_n_ts*N；

and according to the transmission rate ratio of the first frame and the second frame which bear the data service, multiplying the time slot particle number by N to obtain the time slot particle number occupied by the first frame which bear the data service in each time slot in the updating period, and using the time slot particle number as a first parameter of a data filling envelope in the GMP mapping. Or, according to the transmission rate ratio of the first type of frame carrying the data service to the second type of frame, multiplying by the number of the slot granules to obtain the number of the slot granules occupied by the first type of frame carrying the data service in the update period, and using the number as a first parameter of a data filling envelope in the GMP mapping.

Step 102: and sending the target parameters of the data service to a clock chip through the overhead of the second type of frame, wherein the target parameters are used for recovering a reference clock of a client side by the clock chip.

Fig. 2 is a schematic diagram of signal transmission between modules according to an embodiment of the present application, as shown in fig. 2, where a dotted line represents a clock path and a solid line represents a data path.

Signal transmission flow of the clock path: (1) a Cn extraction module: extracting Cn information according to a receiving recovery clock of a client side through a delta-sigma algorithm, (2) a JC overhead module: the Cn information is coded and then inserted into JC overhead (a JC field in the overhead is abbreviated as JC overhead) of a FlexO interface frame; (3) JC overhead extraction module: extracting JC overhead from a FlexO interface frame and obtaining Cn information transmitted in the overhead after decoding; (4) a Cn information interface module: an interface for providing Cn information to the clock chip; (5) a clock processing chip: the clock can be recovered according to the numerator and denominator information of Cn. Specifically, a receiving recovery clock of a client side Serdes and a local system clock calculate to obtain Cn information through a delta-sigma algorithm in a Cn extraction module, the Cn information is coded through a JC overhead module and then inserted into JC overhead of a Flexo interface frame, the Flexo interface frame is sent from a line side Serdes, the Cn information is transmitted in the Flexo interface frame, after the Flexo interface frame is received by the line side, overhead information of a JC field is extracted from a frame format of the Flexo interface frame, the JC overhead extraction module Flexo at the receiving side decodes to obtain the Cn information transmitted by an opposite end at the line side, the information is cached in the Cn information interface module and is provided to a clock chip through software reading or an SPI interface of the chip or other modes, a clock is recovered in the clock chip according to the Cn information and a local board clock input to the clock chip and is used as a reference clock base frequency of the client side Serdes, serdes generates the client transmit clock based on the clock, thereby completing the clock transfer. The values of Cn information transferred in the FlexO overhead JC field are divided into two types. The first method is that the size of a data container occupied by each time slot in the time slot occupied by the oduflex frame bearing the data service is transmitted in the JC overhead corresponding to the time slot occupied by the oduflex frame bearing the data service, namely k × Cn/N; the second is the size of the data container occupied by N time slots, and the JC overhead corresponding to the time slot occupied by the oduflex frame carrying the data service all transfers this value, i.e., k × Cn.

Signal transmission flow of data path: (1) a transcoding and mapping module of the client side service: completing the mapping from the client side service to the uniform oduflex frame; (2) GMP mapping and Flexo framing module: completing the mapping from the oduflex frame to the Flexo interface frame; (3) a GMP demapping and FlexO interface frame positioning module: completing the demapping of the FlexO interface frame to the oduflex frame; (4) a client side service recovery module: and completing the demapping of the oduflex frame to the client side service. Specifically, the client side access service completes mapping from the client service to the oduflex frame through a transcoding module and a BMP mapping mode, for example, the 25Ge service is transcoded through 66B-257B and BMP is mapped to the oduflex, and the CPRI7 service is transcoded through 10B-66B and BMP is mapped to the oduflex. In the GMP mapping module, the system bus bandwidth is calculated according to the current system clock and the bus bit width, an envelope for carrying Flexo data is generated in the system through a delta-sigma algorithm according to the ratio relation between the bandwidth and the Serdes sending data bandwidth of the Flexo, and GMP mapping is performed based on the Flexo data envelope.

The payload part of the FlexO interface frame is divided into T _ n _ TS (24) slots, as shown in fig. 3, each slot has a TS _ bit _ num (128bit) grain size, each frame has D _ TS _ num (5136) slots capable of carrying data, the frame format of the FlexO is that each frame is composed of P _ bit _ num (128 × 5140) bits data, wherein the frame header (AM) and the Overhead (OH) are at the forefront of each frame, and occupy OH _ bit _ num (2 × 128+2 × 128) bits together, and the payload part is D _ bit _ num _ P _ bit _ num-OH _ bit _ num, that is, 128 × btis (5140-4). The overhead JC field of the FlexO delivers Cn of T _ n _ oh (3) slots per T _ n _ frame (8), and JC overhead of T _ n _ ts (24) slots to complete one FlexO requires T _ n _ frame (T _ n _ ts/T _ n _ oh) (64) multiframe, i.e., T _ n _ frame (T _ n _ ts/T _ n _ oh) (64) multiframe is one JC update period. Cn uses JC transfer, when the bearer data traffic needs to occupy N slots, the JC overhead corresponding to the occupied slot is transferred as the same value, which is the ratio of the client traffic rate to the FlexO rate multiplied by a coefficient k, and after each update period Cn is calculated according to the calculation rules in the g.709 standard, yielding JC1, JC2, JC3, JC4, JC5, JC 6. JC1, JC2, JC3, JC4, JC5, JC6 are passed through the JC overhead of FlexO.

For the first method mentioned above, in a JC update period, when the bearer data service needs to occupy N timeslots, according to the ratio of the data service to the frame transmission rate of the bearer interface, the timeslot granule number occupied by the data service is calculated, for example, 25GE service occupies 24 timeslots (N is 24), and each timeslot occupies 13359 timeslot granules; CPRI7 traffic, occupies 8 slots (N ═ 8), and each slot occupies 12950 slot particles. When GMP mapping is carried out on the oduflex, a data filling envelope is calculated, each time slot has T _ N _ frame (T _ N _ TS/T _ N _ oh) (64) D _ TS _ num (5136)/T _ N _ TS (24) TS _ bit _ num (128bit) bit slot particles in N time slots occupied by the data service, the data service can be filled with T _ N _ frame (T _ N _ TS/T _ N _ oh) (64) D _ TS _ num (5136)/T _ N _ TS (24) N time slot particles, and the number of the time slot particles in each time slot of the client service in the whole updating period is obtained by multiplying the proportional relation between the actual client side service rate and the frame rate of the Flexo interface by the number of the particles and dividing by N, so that delta Cm of the data filling envelope is calculated as GMP. For example, 25GE traffic occupies 13359 slot granules per slot in the entire multiframe, Δ Cm 13359, CPRI7 traffic occupies 12590 slot granules per slot in the entire multiframe, Δ Cm 12590. And each time slot grain which can be occupied by the data service needs to be subjected to the sigma-delta calculation of the GMP to generate a filling envelope, and when the 128-time slot grain is the time slot occupied by the oduflex frame currently carrying the data service, the sigma-delta algorithm is calculated once to generate the data envelope mapped by the GMP. The method for generating the GMP mapped data envelope comprises the steps that when Cm obtained by a sigma-delta algorithm is larger than or equal to P _ server, the current time slot is valid data, and fifo enabling is generated; when the Cm obtained by the sigma-delta algorithm is smaller than P _ server, the current time slot is filled with data, no read FIFO enable is generated, and when the read enable is valid, the data traffic buffered in the FIFO is mapped into the FlexO payload, as shown in fig. 4.

For the second method described in the above clock path, in a JC update period, when the bearer data service needs to occupy N timeslots, according to the ratio relationship between the data service and the bearer interface frame transmission rate, the timeslot granule number occupied by the data service is calculated, for example, 25GE service occupies 24 timeslots (N is 24), which totally occupies 320626.2383 timeslot granules, and each timeslot occupies 320626.2383/N timeslot granules; CPRI7 traffic occupies 8 slots (N ═ 8), and occupies 10367.4611 slot particles, each slot occupying 103607.4611/N slot particles. When GMP mapping is carried out on the oduflex, a data filling envelope is calculated, each time slot has T _ N _ frame (T _ N _ TS/T _ N _ oh) (64) D _ TS _ num (5136)/T _ N _ TS (24) TS _ bit _ num (128bit) slot particles in N time slots occupied by the data service, the data service can be filled with T _ N _ frame (T _ N _ TS/T _ N _ oh) (64) D _ TS _ num (5136)/T _ N _ TS (24) N slot particles, and the number of the slot particles of the client service in the whole updating period is obtained by multiplying the number of the particles according to the proportional relation between the actual client side service rate and the frame rate of the Flexo interface, so that the delta Cm of the data filling envelope is calculated as GMP. For example, 25GE traffic occupies 320626 slot granules, Δ Cm 320626, CPRI7 traffic occupies 103607 slot granules, Δ Cm 103607, throughout the multiframe. Each 128-bit timeslot granule which can be occupied by the data service needs to perform sigma-delta calculation of GMP to generate a filling envelope, and when the 128-bit timeslot granule is a timeslot occupied by an oduflex frame currently carrying the data service, the sigma-delta algorithm is calculated once to generate a GMP mapped data envelope. The method for generating the GMP mapped data envelope comprises the steps that when Cm obtained by a sigma-delta algorithm is larger than or equal to P _ server, the current time slot is valid data, and fifo enabling is generated; and when the Cm obtained by the sigma-delta algorithm is smaller than P _ server, the current time slot is filled with data, reading FIFO enable is not generated, and when the reading enable is effective, the data service cached in the FIFO is mapped into a FlexO payload. As shown in fig. 4.

And the FlexO interface frame is sent to a line optical port through serdes, and on a line receiving side, after being processed by modules such as framing and the like, the overhead position is calculated according to a frame structure, and the overhead such as JC and the like is extracted. Calculating the system bus bandwidth according to the current system clock and the bus bit width, generating an envelope for carrying Flexo data in the system through a delta-sigma algorithm according to the ratio relation between the bandwidth and the Serdes sending data bandwidth of the Flexo, wherein GMP demapping is performed based on the Flexo data envelope, and the GMP demapping module is the same as the GMP mapping module. The GMP demapping module performs delta-sigma calculation according to the integer part of the Cm value extracted from the JC overhead and the foregoing FlexO data envelope to obtain an oduflex valid data indication envelope in the FlexO interface frame, writes the envelope as a write indication into the FIFO, receives the recovered oduflex frame as the line side, demaps and decodes the oduflex frame by the client side service recovery module in fig. 2 to obtain client side data, and sends the client side data to the client port through the client side Serdes under the client sending clock.

According to the technical scheme of the embodiment of the application, the transferring, sending, transmitting and receiving of various client services to the FlexO interface frame at the line side and the recovery of the client services are realized. In the GMP mapping method, continuous M × 128bit time slot particles of FlexO are not carried out, all are data service signals or all are filling bits, calculation judgment is carried out by taking the 128bit time slot particles as a unit, delay jitter brought by the continuous 128 × M filling bits during mapping is reduced, and optimization is carried out on a data path; the clock chip is used, so that the conversion of Cn information in the digital logic is avoided, the ratio information is directly provided for the external clock chip for clock recovery, and optimization is performed on a clock path.

Fig. 5 is a schematic structural composition diagram of a signal transmission device according to an embodiment of the present application, and as shown in fig. 5, the signal transmission device includes:

a first mapping unit 501, configured to map a data service on a client side into a first type of frame;

a second mapping unit 502, configured to map the first-type frame into a second-type frame through GMP, where the GMP mapping is performed based on a time slot as a unit; the overhead of the second type of frame comprises a JC field, and the JC field is used for transmitting target parameters of the data service;

a transferring unit 503, configured to send a target parameter of the data service to a clock chip through the overhead of the second-class frame, where the target parameter is used for the clock chip to recover a reference clock at a client side.

Those skilled in the art will understand that the implementation functions of each unit in the signal transmission device shown in fig. 5 can be understood by referring to the related description of the signal transmission method. The functions of the units in the signal transmission device shown in fig. 5 can be realized by a program running on a processor, and can also be realized by a specific logic circuit, such as a programmable logic array (FPGA).

Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device 600 shown in fig. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 6, the network device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of signal transmission, the method comprising:

2. The method according to claim 1, wherein in a case where the GMP mapping is performed on a slot-by-slot basis, a calculation frequency of the GMP mapping is equal to or greater than a first threshold; and the size of the container selected by the GMP mapping is larger than or equal to a second threshold value.

3. The method according to claim 1 or 2, characterized in that the first type of frames mapped by data traffic of different rates occupy different numbers of time slots, wherein,

4. The method of claim 3, further comprising:

5. The method according to any of claims 1 to 4, wherein the payload portion of the second type frame is divided into T _ n _ ts slots, wherein the target parameters for T _ n _ oh slots are transmitted every T _ n _ frame through a JC field in the overhead of the second type frame, and the target parameters for T _ n _ ts slots are transmitted through T _ n _ frame (T _ n _ ts/T _ n _ oh) second type frames, wherein the update period of the JC field is T _ n _ frame (T _ n _ ts/T _ n _ oh) second type frames.

6. The method of claim 5, further comprising:

7. The method according to claim 2 or 6, wherein each frame of the second type has D _ ts _ num time slots capable of carrying service data, and the method further comprises:

T_n_frame*(T_n_ts/T_n_oh)*D_ts_num/T_n_ts*N；

8. The method according to claim 2 or 6, wherein each frame of the second type has D _ ts _ num time slots capable of carrying service data, and the method further comprises:

T_n_frame*(T_n_ts/T_n_oh)*D_ts_num/T_n_ts*N；

9. The method according to claim 7 or 8, wherein each slot granule occupied by the first type of frame carrying the data service performs a computation of a fill envelope once, and when a target slot granule belongs to a slot occupied by the first type of frame carrying the data service, a data envelope in the GMP mapping is computed once.

10. A signal transmission apparatus, characterized in that the apparatus comprises:

11. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 9.

12. A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 9.