CN109644074B

CN109644074B - Data transmission method, terminal, network side equipment and system

Info

Publication number: CN109644074B
Application number: CN201780051034.5A
Authority: CN
Inventors: 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-02-21
Filing date: 2017-02-21
Publication date: 2021-01-12
Anticipated expiration: 2037-02-21
Also published as: WO2018152674A1; CN109644074A

Abstract

The embodiment of the invention discloses a data transmission method, a terminal, network side equipment and a system, which comprises the following steps: a terminal transmits a media access control layer protocol data unit (MAC PDU), wherein the MAC PDU comprises one or more sub-packet headers (MAC sub-headers), and each M AC sub-header of the one or more MAC sub-headers is used for indicating one or more loads in the MAC PDU. The embodiment of the invention is beneficial to reducing the data length of the MAC PDU and improving the transmission efficiency of the MAC PDU.

Description

Data transmission method, terminal, network side equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a terminal, a network side device, and a system.

Background

A Media Access Control (MAC) Protocol Data Unit (PDU) is a bit stream aligned with eight bits, the leftmost bit of the first row of the highest bit, and the rightmost bit of the lowest bit in the last row; the MAC Service Data Unit (SDU) is also an octet-aligned bit stream, and the parameters within the MAC PDU are also in the same order, with the upper bits on the left and the lower bits on the right. The MAC PDU is a MAC layer protocol data unit, and is composed of character strings arranged by byte (8 bit). As known from the specification of the 3GPP MAC layer protocol 36.321, as shown in fig. 1, a MAC PDU used in a Long Term Evolution (LTE) system includes a MAC PDU header, 0 or more MAC SDUs, 0 or more MAC CEs, and possibly padding. One MAC PDU header comprises one or more MAC PDU sub-header MAC sub-headers, and each MAC PDU sub-header MAC sub-header corresponds to one MAC SDU or one MAC CE. Some information in the sub-header MAC sub-header is used to indicate information of the corresponding MAC CE or MAC SDU, such as type, length, location, and the like.

The existing protocol specifies three types of MAC sub-header sub-headers, as shown in fig. 2, the first MAC sub-header is composed of an R field, an F2 (Flag 2) field, an E field, a logical channel identifier LCID field, an F (Flag) field, and an L field, the R field occupies the 1 st bit of the MAC sub-header, specifically, reserved bits, the F2 field and the F field occupy the 2 nd bit and the 9 th bit of the MAC sub-header respectively, for indicating the length of the L field, the E field occupies the 3 rd bit of the MAC sub-header, for indicating whether the header of the MAC PDU has the extension field, that is, if there is a repeated R field, F2 field, F field, E field, etc. to form the next sub-header, the LCID field occupies the 4 th bit to 8 th bit of the MAC sub-header, for indicating the type of MAC SDU, such as 00000 represents Common Control CHannel (CCCH) logical CHannel, where 01011-. The L field occupies the 10 th bit of the MAC sub-header to the last bit of the MAC sub-header, and may specifically be the 16 th bit or the 24 th bit. The F domain is absent in the second MAC sub-header, the L domain occupies the 9 th bit to the 24 th bit of the MAC sub-header, and the positions and meanings of other domains are the same as those of the first MAC sub-header. The third kind of MAC sub-header defaults F domain and L domain, only reserves R domain, F2 domain, E domain and LCID domain, and the no L domain MAC sub-header corresponds to the most one MAC SDU of MAC PDU or corresponds to MAC CE with fixed size.

New designs different from the MAC CE in the existing LTE system may appear in 5th Generation (5G) mobile communication system, such as variable-size MAC CE, and for example, in the multi-basic parameter set discussion, design of new Buffer Status Report (BSR) such MAC CE is involved. Because the MAC sub-headers and the MAC CEs of the existing MAC PDU are in one-to-one correspondence, when the one-to-one correspondence method is applied to a 5G system, the number of the MAC CEs is increased, the number of the MAC sub-headers is correspondingly increased synchronously, and serious data resource waste is easily caused.

Disclosure of Invention

Embodiments of the present invention provide a data transmission method, a terminal, a network side device, and a system, so as to reduce the data length of an MAC PDU and facilitate improving the transmission efficiency of the MAC PDU.

In a first aspect, an embodiment of the present invention provides a data transmission method, including:

a terminal transmits a media access control layer protocol data unit (MAC PDU), wherein the MAC PDU comprises one or more sub-packet headers (MAC sub-headers), and each of the one or more MAC sub-headers is used for indicating one or more loads in the MAC PDU.

Therefore, in the embodiment of the invention, one MAC sub-header in the MAC PDU transmitted by the terminal can correspond to a plurality of loads, so that the number of the MAC sub-headers in the MAC PDU can be reduced, the data length of the MAC PDU is reduced, and the transmission efficiency of the MAC PDU is improved.

In one possible design, the load is a media access control layer control element, MAC CE, or a media access control layer service data unit, MAC SDU.

In one possible design, the MAC sub-header includes a logical channel identifier LCID field, where the LCID field is used to indicate a type of a logical channel to which a MAC sdu in the MAC PDU belongs, and a bit number of the LCID field is greater than or equal to 1.

In one possible design, the MAC sub-header includes an L field, where the L field is used to carry multiplexed data, and the multiplexed data at least includes any one of the following: a media access control layer control element (MAC CE) or a media access control layer service data unit (MAC SDU);

the MAC sub-header further includes an F2 field and an F field, the F2 field and the F field are used to indicate the length of the multiplexed data, or the F2 field and the F field are used to indicate that the MAC sub-header further includes an F1 field, the F1 field occupies an R field or an E field of the MAC sub-header, and the F1 field, the F2 field, and the F field are used to indicate the length of the multiplexed data.

Therefore, in the design, the L domain in the MAC sub-header in the MAC PDU transmitted by the terminal is directly used for bearing the multiplexing data, namely, the original data needing to be borne in the load of the MAC PDU can be partially or completely borne in the L domain, so that the data length of the MAC PDU is effectively reduced, the transmission quantity of the MAC PDU is favorably reduced, and the transmission efficiency of the MAC PDU is improved.

In one possible design, before the terminal transmits a medium access control layer protocol data unit MAC PDU, the method further includes:

and the terminal receives a high-level signaling sent by network side equipment, wherein the high-level signaling comprises the format configuration information of the MAC PDU.

In a second aspect, an embodiment of the present invention provides a data transmission method, including:

the network side equipment transmits a media access control layer protocol data unit (MAC PDU), wherein the MAC PDU comprises a MAC header MAC sub-header, and each MAC sub-header in the one or more MAC sub-headers is used for indicating one or more loads in the MAC PDU.

Therefore, in the embodiment of the invention, one MAC sub-header in the MAC PDU transmitted by the network side equipment can correspond to a plurality of loads, so that the number of the MAC sub-headers in the MAC PDU can be reduced, the data length of the MAC PDU is reduced, and the transmission efficiency of the MAC PDU is improved.

Therefore, in the design, the L domain in the MAC sub-header in the MAC PDU transmitted by the network side equipment is directly used for bearing multiplexing data, namely, the original data needing to be borne in the load of the MAC PDU can be partially or completely borne in the L domain, so that the data length of the MAC PDU is effectively reduced, the transmission quantity of the MAC PDU is favorably reduced, and the transmission efficiency of the MAC PDU is improved.

In one possible design, before the network side device transmits a medium access control layer protocol data unit MAC PDU, the method further includes:

and the network side equipment sends a high-level signaling to a terminal, wherein the high-level signaling comprises the format configuration information of the MAC PDU.

In a third aspect, an embodiment of the present invention provides a terminal, where the terminal has a function of implementing a behavior of the terminal in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible design, the terminal includes a processor configured to enable the terminal to perform the corresponding functions of the above-described method. Further, the terminal may further include a transceiver for supporting communication between the terminal and the network-side device. Further, the terminal may also include a memory, coupled to the processor, that retains program instructions and data necessary for the terminal.

In a fourth aspect, an embodiment of the present invention provides a network-side device, where the network-side device has a function of implementing a behavior of the network-side device in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible design, the network-side device includes a processor configured to support the network-side device to perform corresponding functions in the above method. Further, the network side device may further include a transceiver for supporting communication between the network side device and the terminal. Further, the network side device may further comprise a memory for coupling with the processor, which stores program instructions and data necessary for the network side device.

In a fifth aspect, an embodiment of the present invention provides a communication system, where the communication system includes the terminal and the network side device described in the foregoing aspect.

In a sixth aspect, the present invention provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the method of the first or second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer program product including instructions, which when run on a computer, cause the computer to perform the method of the first or second aspect.

Therefore, in the embodiment of the invention, one MAC sub-header in the MAC PDU transmitted between the terminal and the network side equipment can correspond to a plurality of loads, so that the number of the MAC sub-headers in the MAC PDU can be reduced, the data length of the MAC PDU is reduced, and the transmission efficiency of the MAC PDU is improved.

Drawings

Reference will now be made in brief to the drawings that are needed in describing embodiments or prior art.

Fig. 1 is a schematic structural diagram of a format of a MAC PDU used in an existing 3GPP MAC layer protocol.

Fig. 2 is a structural diagram illustrating the formats of three types of MAC sub-headers used in the existing 3GPP MAC layer protocol;

FIG. 3 is a schematic diagram of a possible network architecture provided by an embodiment of the present invention;

fig. 4 is a communication diagram of a data transmission method according to an embodiment of the present invention;

fig. 5 is a communication diagram of another data transmission method according to an embodiment of the present invention;

fig. 6 is a communication diagram of another data transmission method according to an embodiment of the present invention;

fig. 7A is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 7B is a schematic structural diagram of another terminal according to an embodiment of the present invention;

fig. 8A is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 8B is a schematic structural diagram of another network-side device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating a possible network architecture according to an embodiment of the present invention. The network architecture comprises network side equipment and a terminal, wherein when the terminal is accessed to a mobile communication network provided by the network side equipment, the terminal and the network side equipment can be in communication connection through a wireless link. The network-side device may be, for example, a base station in a 5G network. In the embodiments of the present invention, the terms "network" and "system" are often used interchangeably, and those skilled in the art can understand the meaning of the terms. The terminal according to the embodiment of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a terminal.

Referring to fig. 4, fig. 4 is a data transmission method provided in an embodiment of the present invention, which is applied to a mobile communication network including a network side device and a terminal, where the network side device is in communication connection with the terminal, and the method includes: section 401, specifically as follows:

401, a terminal transmits a media access control layer protocol data unit, MAC PDU, the MAC PDU including one or more sub-packet headers, MAC sub-headers, each of the one or more MAC sub-headers being configured to indicate one or more loads in the MAC PDU.

402, a network side device transmits a media access control layer protocol data unit, MAC PDU, the MAC PDU including one or more sub-packet headers, MAC sub-headers, each of the one or more MAC sub-headers being configured to indicate one or more loads in the MAC PDU.

In one possible example, the payload is a medium access control layer control element, MAC CE, or a medium access control layer service data unit, MAC SDU.

For example, the MAC header of one MAC PDU includes MAC sub-header1 and MAC sub-header2, and the payload part (i.e., the subsequent fields except the MAC header) of the MAC PDU includes MAC CE1, MAC CE2, MAC CE3, MAC SDU1, MAC SDU2, MAC SDU3, and padding part. The MAC sub-header1 corresponds to MAC CE1, MAC CE2 and MAC CE3, and the MAC sub-header2 corresponds to MAC SDU1, MAC SDU2 and MAC SDU 3.

It can be seen that, in the embodiment of the present invention, one MAC sub-header in the MAC PDU transmitted between the terminal and the network side device may correspond to multiple loads, so that the number of MAC sub-headers in the MAC PDU may be reduced, thereby reducing the data length of the MAC PDU, and facilitating to improve the transmission efficiency of the MAC PDU.

In one possible example, the MAC sub-header includes a logical channel identifier LCID field, where the LCID field is used to indicate a type of a logical channel to which a medium access control layer service data unit MAC SDU in the MAC PDU belongs, and a bit number of the LCID field is greater than or equal to 1.

Wherein, when the bit number in the MAC sub-header occupied by the LCID field is 5 bits, the indication Index information of the LCID field may specifically directly follow the partial definition of the existing LCID field. Specifically, the results are shown in Table 1. The Index information of the LCID field may be configured through high-layer signaling and notified to the terminal.

TABLE 1 LCID field indication Index information Table

LCID value	Type of logical channel to which MAC SDU belongs
		00000	Common control channel CCCH
00001-01010	Identity of the logical channel
		01011-10111	Reserved
11000	Activation/Deactivation(4octets)
		11001	SC-MCCH,SC-MTCH(see note)
11010	Long DRX Command
		11011	Activation/Deactivation(1octet)
11100	UE Contention Resolution Identity
		11101	Timing Advance Command
11110	DRX Command
		11111	Padding

In one possible example, the MAC sub-header includes an L field, where the L field is used to carry multiplexed data, and the multiplexed data at least includes any one of the following: a media access control layer control element (MAC CE) or a media access control layer service data unit (MAC SDU);

For example, when the MAC sub-header includes an F2 field and an F field, the length of the multiplexed data indicated by the F2 field and the F field may be as shown in table 2.

TABLE 2F Domain F2 Domain indication information

For another example, when the MAC sub-header includes F2 field and F field, and F1 field, and the F1 field occupies the R field of the MAC sub-header, the length of the multiplexed data indicated by the values of the F1 field, the F field, and the F2 field may be as shown in table 3.

TABLE 3F 1 FIELD F2 FIELD INDICATION INFORMATION

F1 F F2	Multiplex data length (bit)
		000	Not exist
001	Not exist
		010	Not exist
011	31
		100	Not exist
101	Not exist
		110	Not exist
111	39

In one possible example, before the terminal transmits a medium access control layer protocol data unit MAC PDU, the method further includes:

In one possible example, before the network side device transmits a medium access control layer protocol data unit MAC PDU, the method further includes:

The network side device may specifically determine whether the MAC header format to be configured is required according to a usage scenario to which the MAC entity entry belongs, for example, if the usage scenario corresponding to the MAC entity entry is a resource-constrained scenario, the network side configures any one of the MAC header formats described in the embodiments of the present invention; if the usage scenario corresponding to the MAC entry is a non-resource-constrained scenario, the network side device selects the existing MAC header format to save signaling overhead.

For example, assuming that the network side device needs to configure a MAC header format of a MAC entry, and the MAC entry needs to configure a MAC sub-header capable of carrying multiplexing data with a length of 39bits, the MAC sub-header configured for the MAC entry is shown in table 4, where F1F 2F is 111, which is used to indicate that the length of the multiplexing data is 39bits, and the multiplexing data is specifically a MAC CE.

TABLE 4 MAC sub-header with multiplexing data length of 39bits

Referring to fig. 5, fig. 5 is a diagram of a mechanism data transmission method, applied to a mobile communication network including a network side device and a terminal, where the network side device is communicatively connected to the terminal, and the method is described from a downlink data transmission perspective, and the method includes: sections 501 to 502, specifically as follows:

501, a network side device sends a media access control layer protocol data unit MAC PDU to a terminal, where the MAC PDU includes one or more sub-packet headers MAC sub-headers, and each of the one or more MAC sub-headers is used to indicate one or more loads in the MAC PDU.

502, the terminal receives the MAC PDU.

It can be seen that, in the embodiment of the present invention, one MAC sub-header in the MAC PDU sent by the network side device to the terminal may correspond to multiple loads, so that the number of MAC sub-headers in the MAC PDU may be reduced, thereby reducing the data length of the MAC PDU, and facilitating to improve the transmission efficiency of the MAC PDU.

Referring to fig. 6, fig. 6 is a data transmission method of a mechanism according to an embodiment of the present invention, applied to a mobile communication network including a network side device and a terminal, where the network side device is communicatively connected to the terminal, and the method is described from an uplink data transmission perspective, and the method includes: sections 601 to 602, specifically as follows:

601, a terminal sends a media access control layer protocol data unit MAC PDU to a network side device, where the MAC PDU includes one or more sub-packet headers MAC sub-headers, and each of the one or more MAC sub-headers is used to indicate one or more loads in the MAC PDU.

And 602, the network side device receives the MAC PDU sent by the terminal.

It can be seen that, in the embodiment of the present invention, one MAC sub-header in the MAC PDU sent by the terminal to the network side device may correspond to multiple loads, so that the number of MAC sub-headers in the MAC PDU may be reduced, thereby reducing the data length of the MAC PDU, and facilitating to improve the transmission efficiency of the MAC PDU.

The above-mentioned embodiments of the present invention have been introduced mainly from the perspective of interaction between network elements. It is understood that, in order to implement the above functions, the terminal and the network side device include hardware structures and/or software modules for executing the respective functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives 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 invention.

The terminal and the network side device may be divided according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of an integrated unit, fig. 7A shows a schematic diagram of a possible structure of the first core network device involved in the above embodiments. The terminal 700 includes: a processing unit 702 and a communication unit 703. Processing unit 702 is configured to control and manage actions of the terminal, e.g., processing unit 702 is configured to enable the terminal to perform step 401 in fig. 4, step 502 in fig. 5, step 601 in fig. 6, and/or other processes for the techniques described herein. The communication unit 703 is configured to support communication between the terminal and another device, for example, communication between the terminal and a network-side device shown in fig. 1. The terminal may further include a storage unit 701 for storing program codes and data of the terminal.

The Processing Unit 702 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 703 may be a transceiver, a transmitting and receiving circuit, etc., and the storage unit 701 may be a memory.

The processing unit 702 is configured to transmit a MAC PDU through the communication unit 703, where the MAC PDU includes one or more sub-packet headers MAC sub-headers, and each of the one or more MAC sub-headers is configured to indicate one or more loads in the MAC PDU.

In a possible example, before the processing unit 702 transmits a MAC PDU through the communication unit 703, the processing unit 702 is further configured to receive, through the communication unit 703, a higher layer signaling sent by a network side device, where the higher layer signaling includes format configuration information of the MAC PDU.

When the processing unit 702 is a processor, the communication unit 703 is a communication interface, and the storage unit 701 is a memory, the terminal according to the embodiment of the present invention may be the terminal shown in fig. 7B.

Referring to fig. 7B, the terminal 710 includes: a processor 712, a communication interface 713, and a memory 711. Optionally, the terminal 710 may also include a bus 714. Wherein the communication interface 713, the processor 712, and the memory 711 may be connected to each other by a bus 714; the bus 714 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 714 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. 7B, but this is not intended to represent only one bus or type of bus.

The terminal shown in fig. 7A or fig. 7B may also be understood as an apparatus for a terminal, and the embodiment of the present invention is not limited thereto.

In the case of an integrated unit, fig. 8A shows a schematic diagram of a possible structure of the first core network device involved in the above embodiments. The network side device 800 includes: a processing unit 802 and a communication unit 803. Processing unit 802 is configured to control and manage actions of the network-side device, for example, processing unit 802 is configured to support the network-side device to perform step 402 in fig. 4, step 501 in fig. 5, step 602 in fig. 6, and/or other processes for the techniques described herein. The communication unit 803 is used to support communication between the network side device and other devices, for example, a terminal shown in fig. 3. The network side device may further comprise a storage unit 801 for storing program codes and data of the network side device.

The Processing Unit 802 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a transceiver, a transmitting and receiving circuit, etc., and the storage unit 801 may be a memory.

Wherein the processing unit 802 is configured to transmit a MAC PDU including one or more sub-packet headers MAC sub-headers through the communication unit 803, and each of the one or more MAC sub-headers is configured to indicate one or more loads in the MAC PDU.

In one possible example, before the processing unit 802 transmits a MAC PDU through the communication unit 803, the processing unit is further configured to send higher layer signaling to a terminal, where the higher layer signaling includes format configuration information of the MAC PDU.

When the processing unit 802 is a processor, the communication unit 803 is a communication interface, and the storage unit 801 is a memory, the network-side device according to the embodiment of the present invention may be the network-side device shown in fig. 8B.

Referring to fig. 8B, the network device 810 includes: processor 812, communications interface 813, memory 811. Optionally, the network-side device 810 may further include a bus 815. Wherein the communication interface 813, the processor 812, and the memory 811 may be connected to each other by a bus 815; the bus 815 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 815 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. 8B, but this is not intended to represent only one bus or type of bus.

The network side device shown in fig. 8A or fig. 8B may also be understood as a device for a network side device, and the embodiment of the present invention is not limited thereto.

As shown in fig. 9, for convenience of description, only the parts related to the embodiment of the present invention are shown, and details of the specific technology are not disclosed, please refer to the method part of the embodiment of the present invention. The terminal may be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a vehicle-mounted computer, etc., taking the terminal as the mobile phone as an example:

fig. 9 is a block diagram showing a partial structure of a mobile phone related to a terminal provided by an embodiment of the present invention. Referring to fig. 9, the handset includes: a Radio Frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a Wireless Fidelity (WiFi) module 970, a processor 980, and a power supply 990. Those skilled in the art will appreciate that the handset configuration shown in fig. 9 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 9:

RF circuitry 910 may be used for the reception and transmission of information. In general, the RF circuit 910 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 920 may be used to store software programs and modules, and the processor 980 may execute various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the mobile phone, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 930 may include a fingerprint recognition module 931 and other input devices 932. Fingerprint identification module 931, can gather the fingerprint data of user above it. The input unit 930 may include other input devices 932 in addition to the fingerprint recognition module 931. In particular, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The Display unit 940 may include a Display screen 941, and optionally, the Display screen 941 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Although in fig. 9, the fingerprint recognition module 931 and the display screen 941 are shown as two separate components to implement the input and output functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of ambient light, and the proximity sensor may turn off the display screen 941 and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 960, speaker 961, microphone 962 may provide an audio interface between a user and a cell phone. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and the audio signal is converted by the speaker 961 to be played; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, converts the electrical signal into audio data after being received by the audio circuit 960, and then processes the audio data by the audio data playing processor 980, and then sends the audio data to, for example, another mobile phone through the RF circuit 910, or plays the audio data to the memory 920 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 970, and provides wireless broadband Internet access for the user. Although fig. 9 shows the WiFi module 970, it is understood that it does not belong to the essential constitution of the handset, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 980 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby integrally monitoring the mobile phone. Alternatively, processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 980.

The handset also includes a power supply 990 (e.g., a battery) for supplying power to the various components, which may preferably be logically connected to the processor 980 via a power management system, thereby providing management of charging, discharging, and power consumption via the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In the embodiments shown in fig. 4 to fig. 6, the flow of the terminal side in the steps of the method may be implemented based on the structure of the mobile phone.

In the embodiments shown in fig. 7A and 7B, the functions of the units can be implemented based on the structure of the mobile phone.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in embodiments of the invention may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention.

Claims

1. A method of data transmission, comprising:

a terminal transmits a media access control layer protocol data unit (MAC PDU), wherein the MAC PDU comprises one or more sub-packet headers (MAC sub-headers), each of the one or more MAC sub-headers is used for indicating one or more loads in the MAC PDU, the MAC sub-headers are used for carrying multiplexing data, and the multiplexing data is part of or all data in the loads; the MAC sub-header is suitable for a resource restricted scene corresponding to the MAC entity; the MAC sub-header further includes an F2 field and an F field, the F2 field and the F field are used to indicate the length of the multiplexed data, or the F2 field and the F field are used to indicate that the MAC sub-header further includes an F1 field, the F1 field occupies an R field or an E field of the MAC sub-header, and the F1 field, the F2 field, and the F field are used to indicate the length of the multiplexed data.

2. The method of claim 1, wherein the payload is a medium access control layer control element (MAC CE) or a medium access control layer service data unit (MAC SDU).

3. The method of claim 1, wherein the MAC sub-header comprises a logical channel identification LCID field, wherein the LCID field is used to indicate a type of a logical channel to which a medium access control layer service data unit (MAC SDU) in the MAC PDU belongs, and wherein the number of bits in the LCID field is greater than or equal to 1.

4. The method according to any of claims 1-3, wherein the MAC sub-header comprises an L field, and the L field is used for carrying multiplexed data, and the multiplexed data at least comprises any one of the following: a media access control layer control element MAC CE or a media access control layer service data unit MAC SDU.

5. The method according to any of claims 1-3, wherein before the terminal transmits a medium access control layer protocol data unit, MAC, PDU, the method further comprises:

6. A method of data transmission, comprising:

a network side device transmits a media access control layer protocol data unit (MAC PDU), wherein the MAC PDU comprises one or more sub-packet headers (MAC sub-headers), each of the one or more MAC sub-headers is used for indicating one or more loads in the MAC PDU, the MAC sub-headers are used for carrying multiplexing data, and the multiplexing data is part of or all data in the loads; the MAC sub-header is suitable for a resource restricted scene corresponding to the MAC entity; the MAC sub-header further includes an F2 field and an F field, the F2 field and the F field are used to indicate the length of the multiplexed data, or the F2 field and the F field are used to indicate that the MAC sub-header further includes an F1 field, the F1 field occupies an R field or an E field of the MAC sub-header, and the F1 field, the F2 field, and the F field are used to indicate the length of the multiplexed data.

7. The method of claim 6, wherein the payload is a media access control layer control element (MAC CE) or a media access control layer service data unit (MAC SDU).

8. The method of claim 6, wherein the MAC sub-header comprises a Logical Channel Identification (LCID) field, wherein the LCID field is used for indicating a type of a logical channel to which a media access control layer service data unit (MAC SDU) in the MAC PDU belongs, and wherein the number of bits in the LCID field is greater than or equal to 1.

9. The method according to any of claims 6-8, wherein the MAC sub-header comprises an L field, and the L field is used for carrying multiplexed data, and the multiplexed data at least comprises any one of the following: a media access control layer control element MAC CE or a media access control layer service data unit MAC SDU.

10. The method according to any of claims 6-8, wherein before the network side device transmits a medium access control layer protocol data unit, MAC PDU, the method further comprises:

11. A terminal, characterized in that it comprises a processing unit and a communication unit,

the processing unit is configured to transmit a media access control layer protocol data unit MAC PDU through the communication unit, where the MAC PDU includes one or more sub-packet headers MAC sub-headers, each of the one or more MAC sub-headers is configured to indicate one or more loads in the MAC PDU, and the MAC sub-headers are configured to carry multiplexing data, where the multiplexing data is part of or all of the data in the loads; the MAC sub-header is suitable for a resource restricted scene corresponding to the MAC entity; the MAC sub-header further includes an F2 field and an F field, the F2 field and the F field are used to indicate the length of the multiplexed data, or the F2 field and the F field are used to indicate that the MAC sub-header further includes an F1 field, the F1 field occupies an R field or an E field of the MAC sub-header, and the F1 field, the F2 field, and the F field are used to indicate the length of the multiplexed data.

12. The terminal according to claim 11, wherein the payload is a medium access control layer control element, MAC CE, or a medium access control layer service data unit, MAC SDU.

13. The terminal of claim 11, wherein the MAC sub-header comprises a logical channel identification LCID field, the LCID field indicating a type of a logical channel to which a medium access control layer service data unit, MAC SDU, in the MAC PDU belongs, and a bit number of the LCID field is greater than or equal to 1.

14. The terminal according to any of claims 11-13, wherein the MAC sub-header comprises an L field, and the L field is used for carrying multiplexed data, and the multiplexed data at least comprises any of the following: a media access control layer control element MAC CE or a media access control layer service data unit MAC SDU.

15. The terminal according to any of claims 11-13, wherein the processing unit is further configured to receive, by the communication unit, a higher layer signaling sent by a network side device before the processing unit transmits a medium access control layer protocol data unit, MAC PDU, through the communication unit, and the higher layer signaling includes format configuration information of the MAC PDU.

16. A network side device is characterized by comprising a processing unit and a communication unit,

17. The network-side device of claim 16, wherein the payload is a media access control layer control element (MAC CE) or a media access control layer service data unit (MAC SDU).

18. The network-side device of claim 16, wherein the MAC sub-header comprises a logical channel identifier LCID field, the LCID field is used to indicate a type of a logical channel to which a medium access control layer service data unit, MAC SDU, in the MAC PDU belongs, and a bit number of the LCID field is greater than or equal to 1.

19. The network-side device of any one of claims 16 to 18, wherein the MAC sub-header comprises an L field, and the L field is used for carrying multiplexed data, and the multiplexed data at least includes any one of: a media access control layer control element MAC CE or a media access control layer service data unit MAC SDU.

20. The network-side device of any of claims 16-18, wherein before the processing unit transmits a medium access control layer protocol data unit (MAC PDU) through the communication unit, the processing unit is further configured to send higher layer signaling to a terminal, and the higher layer signaling contains format configuration information of the MAC PDU.

21. A terminal comprising a processor, a memory, and a transceiver, the processor communicatively coupled to the memory and the transceiver;

the memory stores program code and data, and the processor is configured to invoke the program code and the data in the memory and perform the method of any of claims 1-5.

22. A network side device, comprising a processor, a memory and a transceiver, wherein the processor is communicatively connected to the memory and the transceiver;

the memory stores program code and data, and the processor is configured to invoke the program code and the data in the memory and perform the method of any of claims 6-10.

23. A communication system, characterized in that it comprises a terminal according to any of claims 11 to 15 and a network side device according to any of claims 16 to 20.