CN114867111A

CN114867111A - Data transmission method, device, user equipment, network equipment and storage medium

Info

Publication number: CN114867111A
Application number: CN202110077722.7A
Authority: CN
Inventors: 方亮
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2022-08-05

Abstract

The embodiment of the application provides a data transmission method, a data transmission device, user equipment, network equipment and a storage medium, and relates to the technical field of communication. The data transmission method is executed by user equipment, and comprises the following steps: determining the type of a BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a Small Data Transmission (SDT); transmitting the BSR MAC CE to a network device to cause the network device to perform data transmission based on the BSR MAC CE. The embodiment of the application solves the problem that the utilization rate of the hollow port resources is low in the related technology.

Description

Data transmission method, device, user equipment, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a user equipment, a network device, and a storage medium.

Background

When the user equipment sends data to the network equipment, RB (Radio Bearer) resources need to be used, and if no RB resources exist, the RB resources need to be applied to the network equipment first, so that the network equipment performs uplink authorization for the user equipment.

Currently, a user equipment applies for RB resources by sending a BSR (Buffer Status Report) MAC CE to a network device, however, although an existing BSR MAC CE can cover all service types, the existing BSR MAC CE cannot fully utilize air interface resources in such a case.

Disclosure of Invention

Embodiments of the present application provide a data transmission method, apparatus, user equipment, network device, and storage medium, which can solve the problem of low utilization rate of an air interface resource in related technologies. The technical scheme is as follows:

according to an aspect of an embodiment of the present application, a data transmission method, performed by a user equipment, includes: determining the type of a BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a Small Data Transmission (SDT); transmitting the BSR MAC CE to a network device to cause the network device to perform data transmission based on the BSR MAC CE.

According to an aspect of an embodiment of the present application, a data transmission method, performed by a network device, includes: receiving a BSR MAC CE, wherein the type of the BSR MAC CE is determined based on service types, and the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a small data transmission SDT; performing data transmission based on the BSR MAC CE.

According to an aspect of an embodiment of the present application, a user equipment includes: a memory, a transceiver, and a processor; wherein the memory is used for storing a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and executing the following steps: determining the type of a BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a Small Data Transmission (SDT); transmitting the BSR MAC CE to a network device to cause the network device to perform data transmission based on the BSR MAC CE.

According to an aspect of an embodiment of the present application, a network device includes: a memory, a transceiver, and a processor; wherein the memory is used for storing a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and executing the following steps: receiving a BSR MAC CE, wherein the type of the BSR MAC CE is determined based on service types, and the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a small data transmission SDT; performing data transmission based on the BSR MAC CE.

According to an aspect of an embodiment of the present application, a data transmission apparatus is applied to a user equipment, and the apparatus includes: the type determining module is used for determining the type of the BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are suitable for Small Data Transmission (SDT); a data transmission module, configured to transmit the BSR MAC CE to a network device, so that the network device performs data transmission based on the BSR MAC CE.

According to an aspect of an embodiment of the present application, a data transmission apparatus is applied to a network device, and the apparatus includes: a data receiving module, configured to receive a BSR MAC CE, where the type of the BSR MAC CE is determined based on a service type, and the type of the BSR MAC CE at least includes a short type, a long type, and a first type, a second type, and a third type that are applicable to a small data transmission SDT; a data transmission module, configured to perform data transmission based on the BSR MAC CE.

According to an aspect of embodiments of the present application, a storage medium has stored thereon a computer program which, when executed by a processor, implements a data transmission method as described above.

The beneficial effect that technical scheme that this application provided brought is:

in the foregoing technical solution, the type of the BSR MAC CE is determined based on a service type, where the type of the BSR MAC CE at least includes a short type, a long type, and a first type, a second type, and a third type that are applicable to a small data transmission SDT, so as to send the BSR MAC CE to a network device, so that the network device performs data transmission based on the BSR MAC CE, that is, different service types are adapted through different types of BSR MAC CEs, for example, when the service type is an SDT, the first type, the second type, or the third type that are more applicable to the SDT may be selected, thereby avoiding unnecessary waste of air interface resources, and in this way, solving the problem of low air interface resource utilization in the related art.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

Fig. 1 is a diagram illustrating a short type of BSR MAC CE according to an example embodiment.

Fig. 2 is a diagram illustrating a long type of BSR MAC CE according to an exemplary embodiment.

Fig. 3 is a timing diagram illustrating the transmission of small data in a 2-step random access procedure according to an example embodiment.

Fig. 4 is a timing diagram illustrating the transmission of small data in a 4-step random access procedure, according to an example embodiment.

FIG. 5 is a schematic diagram of an implementation environment shown in accordance with an example embodiment.

Fig. 6 is a timing diagram illustrating a method of data transmission according to an example embodiment.

Fig. 7 is a timing diagram illustrating another method of data transmission according to an example embodiment.

Fig. 8 is a diagram of a protocol data unit PDU of the link control layer MAC according to the corresponding embodiment of fig. 7.

Fig. 9 is a timing diagram illustrating another method of data transmission according to an example embodiment.

Fig. 10 is a schematic diagram of a first type of BSR MAC CE according to the corresponding embodiment of fig. 9.

Fig. 11 is a timing diagram illustrating another method of data transmission according to an example embodiment.

Fig. 12 is a diagram of a second type of BSR MAC CE according to the corresponding embodiment of fig. 11.

Fig. 13 is a timing diagram illustrating another method of data transmission according to an example embodiment.

Fig. 14 is a schematic diagram of a third type of BSR MAC CE according to the corresponding embodiment of fig. 13.

Fig. 15 is a flow chart illustrating another method of data transmission according to an example embodiment.

Fig. 16 is a block diagram illustrating a structure of a data transmission apparatus according to an exemplary embodiment.

Fig. 17 is a block diagram illustrating another data transmission apparatus according to an example embodiment.

Fig. 18 is a block diagram illustrating a network device in accordance with an example embodiment.

Fig. 19 is a block diagram illustrating a structure of a user equipment according to an example embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" include the plural forms as well, and the plural forms "a", "an" and "the" refer to two or more, and other words of similar import, unless expressly stated otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein describes an association relationship that associates objects, meaning that there may be three relationships, e.g., A and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The following is a description and explanation of several terms involved in the present application:

BSR, English is called Buffer Status Report, and Chinese means Buffer Status Report.

RB, English is called Radio Bearer, and Chinese means Radio Bearer.

DRB, english is called Data Radio Bearer, and chinese means Data Radio Bearer.

SDT, English is called Small Data Transmission, and Chinese means Small Data Transmission.

MAC, English is called Medium Access Control, and Chinese means Link Control layer.

PDU, English is called Protocol Data Unit entirely, and Chinese means Protocol Data Unit.

RA, English is called Random Access, and Chinese means Random Access.

UE is called User Equipment in english, and chinese meaning is User Equipment, and may also be called User terminal, and the like.

RRC is called Radio Resource Control in English, and Chinese means Radio Resource Control. RRC includes Inactive and Active Inactive states. Based on RRC Release, the RRC keeps an Inactive Inactive state; based on RRC Setup, RRC enters Active state from Inactive state.

LCG, English is called Logic Channel Group, Chinese means logical Channel Group. In the BSR MAC CE, the LCG field of the logical channel group is used to indicate that a logical channel exists in the logical channel group for uplink data to be transmitted.

LCG ID, English called Logic Channel Group Identification, Chinese meaning logical Channel Group Identification. The BSR MAC CE includes an LCG field for indicating that a logical channel group includes a logical channel to which uplink data is to be transmitted.

Buffer Size, chinese meaning Buffer Size. In the BSR MAC CE, the Buffer Size field is used to indicate the data amount of the uplink data to be transmitted, or it can be understood that the Buffer Size field is used to indicate the radio bearer RB resource that the uplink data to be transmitted needs to use.

As described above, although the existing BSR MAC CE covers all traffic types, in this case, the existing BSR MAC CE cannot fully utilize air interface resources.

First, it is explained that the BSR MAC CE is included in a protocol data unit PDU of the link control layer MAC to notify the network device that the user equipment has a logical channel to be transmitted for uplink data and a data amount of the uplink data to be transmitted. Correspondingly, after receiving the BSR MAC CE, the network device can schedule radio bearer RB resources for the user equipment based on the BSR MAC CE, so that the user equipment transmits uplink data by using the RB resources.

Existing types of BSR MAC CEs include short type and long type.

Fig. 1 illustrates a schematic diagram of the short type of BSR MAC CE. In fig. 1, the short type BSR MAC CE includes 1 LCG field and 1 Buffer Size field.

The length of the LCG field is 3 bits, and the LCG field includes 1 LCG ID. The Buffer Size field is 5 bits in length. In the short type, the LCG ID uniquely corresponds to the Buffer Size field and is associated with the same logical channel.

It should be noted that, the value of the 5-bit Buffer Size field is 0 to 31, and the number of RB resources that need to be used by the indicated uplink data to be transmitted can be determined by a table lookup manner, as shown in table 1 below:

BS value (in bytes) corresponding to numerical value Index of Table 15 bit Buffer Size field

Index	BS value	Index	BS value	Index	BS value	Index	BS value
								0	0	8	≤102	16	≤1446	24	≤20516
1	≤10	9	≤142	17	≤2014	25	≤28581
								2	≤14	10	≤198	18	≤2806	26	≤39818
3	≤20	11	≤276	19	≤3909	27	≤55474
								4	≤28	12	≤384	20	≤5446	28	≤77284
5	≤38	13	≤535	21	≤7587	29	≤107669
								6	≤53	14	≤745	22	≤10570	30	≤150000
7	≤74	15	≤1038	23	≤14726	31	>150000

In table 1, for example, suppose that the LCG ID is 7, the value Index of the Buffer Size field is 0, and correspondingly, the number BS value of the RB resource that needs to be used by the uplink data to be transmitted is 0 bytes.

Then, based on BSR MAC CE, the network device may be notified that there is no uplink data to be transmitted in logical channel 7, and the number of RB resources that need to be used is 0.

For another example, assume that the LCG ID is 3, and the value Index of the Buffer Size field is 13, and correspondingly, the number BS value of the RB resource that needs to be used by the uplink data to be transmitted is less than or equal to 535 bytes.

Then, based on the BSR MAC CE, the network device may be notified that there is uplink data to be transmitted in the logical channel 3, and the number of RB resources that needs to be used for the uplink data to be transmitted is not less than 535 bytes.

Fig. 2 illustrates a diagram of the long type of BSR MAC CE. In fig. 2, the long type BSR MAC CE includes 1 LCG field and 8 Buffer Size fields.

The length of the LCG field is 8 bits, and the LCG field comprises 8 LCG IDs; each Buffer Size field is 8 bits in length. In the long type, 8 LCG IDs are in one-to-one correspondence with 8 Buffer Size fields, and the corresponding LCG IDs and Buffer Size fields are associated with the same logical channel.

It is worth mentioning that in the long type, each LCG ID has only 1 bit for indicating a logical channelThe group has a logical channel for uplink data to be transmitted. In FIG. 2, the LCG ₇ 、LCG ₆ 、LCG ₅ 、LCG ₄ 、LCG ₃ 、LCG ₂ 、LCG ₁ 、LCG ₀ Logical channel 7, logical channel 6, … …, logical channel 1, and logical channel 0 in the logical channel group are respectively indicated. Then, in the LCG field, from high to low, each LCG ID corresponds to an LCG ₇ 、LCG ₆ 、LCG ₅ 、LCG ₄ 、LCG ₃ 、LCG ₂ 、LCG ₁ 、LCG ₀ . Wherein, LCG ₇ The corresponding LCG ID is used for indicating whether the logic channel 7 in the logic channel group has uplink data to be transmitted or not, 0 represents absence, and 1 represents presence; LCG ₆ The corresponding LCG ID is used for indicating whether the logical channel 6 in the logical channel group has uplink data to be transmitted, and so on, the LCG ₀ The corresponding LCG ID is used for indicating whether the logical channel 0 in the logical channel group has uplink data to be transmitted, wherein 0 represents no existence, and 1 represents existence.

Similar to the aforementioned short type, here, the value of the Buffer Size field with 8 bits is 0-255, and the indicated amount of RB resources that need to be used for uplink data to be transmitted can be determined by table lookup, as shown in table 2 below:

BS value (in bytes) corresponding to numerical value Index of the 28-bit Buffer Size field in Table

In Table 2, for example, suppose LCG ₄ The corresponding LCG ID is 1, the value Index of the corresponding Buffer Size field is 115, and correspondingly, the number of RB resources 12994bytes that need to be used by the uplink data to be transmitted is 12994bytes<BS value≤13838bytes。

Then, based on the BSR MAC CE, the network device may be notified that there is uplink data to be transmitted in the logical channel 4, and the number of RB resources that need to be used for the uplink data to be transmitted is greater than 12994bytes and not greater than 13838 bytes.

As can be seen from the above, the existing BSR MAC CE uses 5 bits/8 bits to represent the Buffer Size field, so as to implement coverage on all traffic types, for example, the coverable traffic types at least include small data transmission and large data transmission.

The following explains how the existing BSR MAC CE is applied to SDT service types.

In Release 17WI small data enhancement, a function that the user equipment can transmit small data in an RRC Inactive state is introduced.

Fig. 3 illustrates a timing diagram for transmitting small data in a 2-step random access process. In fig. 3, the process may include the following steps:

step 1: and transmitting the MSGA, and carrying the BSR MAC CE in the MSGA if the MSGA cannot finish transmitting small data at one time.

Step 2: and receiving the MSGB, and allowing the network equipment to perform UL Grant uplink authorization for the user equipment through the MSGB.

And step 3: and based on the uplink authorization of the network equipment, the user equipment transmits the subsequent small data to the network equipment.

Fig. 4 exemplarily shows a timing diagram of transmitting small data in a 4-step random access process. In fig. 4, the process may include the following steps:

step 1: MSG1 is sent to transmit the Random Access Preamble.

Step 2: the MSG2 is received to receive a Random Access Response.

And step 3: and transmitting the MSG3, and carrying the BSR MAC CE in the MSG3 if the MSG3 cannot finish transmitting the small data at one time.

And 4, step 4: and receiving the MSG4, and the network equipment uplink grants the user equipment UL Grant through the MSG 4.

And 5: and based on the uplink authorization of the network equipment, the user equipment transmits the subsequent small data to the network equipment.

As can be seen from the above, for the data radio bearer DRB configured with the small data transmission SDT, when there is small data, BSR MAC CE transmission is triggered.

Generally, the number of RB resources that small data needs to use is no more than 1500 bytes. Correspondingly, for the short type BSR MAC CE, the numerical value Index range of the 5-bit Buffer Size field is 0-16, as shown in Table 1; for a long type BSR MAC CE, the numerical value Index of the 8-bit Buffer Size field will range from 0 to 80, as shown in Table 2.

Then, for short type BSR MAC CE, the Index range of 17-31 will not be used; for long type BSR MAC CEs, the Index range of 81-255 is not used, so that the number of bits wasted in the Buffer Size field is caused, and the existing BSR MAC CEs cannot fully utilize air interface resources.

In view of this, the prior art still has the defect of low utilization rate of air interface resources.

Therefore, the data transmission method, apparatus, user equipment, network device and storage medium provided by the present application aim to solve the above technical problems in the prior art.

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 5 is a schematic diagram of an implementation environment involved with a data transmission method. The implementation environment includes a wireless communication system 100, where the wireless communication system 100 may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, an LTE frequency Division duplex (frequency Division duplex, FDD) system, an LTE Time Division Duplex (TDD) system, a long term evolution (long term evolution advanced, LTE-a) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) system, or a New Radio Network (NR) system, and the like.

The wireless communication System 100 includes a user equipment 110 and a network device, for example, the network device may be a base station 130, and may further include a core network portion, such as an Evolved Packet System (EPS).

In particular, the user equipment 110 refers to an electronic device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem, and the like, for example, the user equipment 110 may be a mobile terminal device, such as a mobile phone (or referred to as a "cellular" phone), and may also be a computer having a mobile terminal device, such as a portable, pocket, handheld, computer-included, or vehicle-mounted mobile apparatus. In different systems, the names of the user equipments 110 may be different, and may be Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other devices. The user equipment 110 may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which are not limited herein.

Base station 130 operates as an access network device and may be referred to as an access point or as an electronic device in an access network that communicates over the air-interface, through one or more sectors, with user device 110, or by other names, depending on the particular application. The base station 130 may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the user equipment 110 and the rest of the access network, which may include an Internet Protocol network. The base station 130 may also coordinate management of attributes for the air interface. For example, the Base Station 130 may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), an evolved Node B (eNB or e-nb) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (new generation System), a Home evolved Node B (HeNB), a relay Node (HeNB), a Home Base Station (femto), a pico Base Station (pico) and the like, which are not limited herein.

Referring to fig. 6, an embodiment of the present application provides a data transmission method, which may include the following steps:

step 21, based on the traffic type, the type of BSR MAC CE is determined.

In one possible implementation, the types of BSR MAC CEs include at least a short type, a long type, and a first type, a second type, and a third type suitable for a small data transmission SDT.

Wherein the first type of BSR MAC CE comprises a first number of Buffer Size fields.

The second type of BSR MAC CE includes one LCG field and a second number of Buffer Size fields, the LCG field including the second number of LCG IDs.

The third type of BSR MAC CE includes one LCG field and a fourth number of Buffer Size fields, the LCG field including the fourth number of LCG IDs.

In one possible embodiment, the first number is 2, the second number is 3 and the fourth number is 8.

In a possible implementation manner, the length of the Buffer Size field in the BSR MAC CE of the first type, the second type, or the third type is smaller than the length of the Buffer Size field in the BSR MAC CE of the short type or the long type, so that the utilization rate of the air interface resources is improved.

For example, compared to the Buffer Size field in the short type or long type BSR MAC CE having a length of 8 bits, the Buffer Size field in the first type, second type, or third type BSR MAC CE having a length of 4 bits makes the Buffer Size field only half of the original Size.

In a possible implementation manner, the length of the LCG field in the second type BSR MAC CE is smaller than the length of the LCG field in the long type BSR MAC CE, so that the utilization rate of air interface resources is improved.

For example, compared to the length of the LCG field in the long BSR MAC CE being 8 bits, the length of the LCG field in the second BSR MAC CE is 4 bits, so that the LCG field is only half of the original length.

It is supplementary stated herein that, for the BSR MAC CE of the first type, the LCG field is directly saved, and it can also be understood that the length of the LCG field is 0 bit, so that the utilization rate of air interface resources is effectively improved.

Thus, different types of BSR MAC CEs may be selected for different traffic types. For example, when the service type is SDT, a BSR MAC CE of a first type, a second type, or a third type may be selected. Or, when the service type is non-SDT, especially non-SDT, the LCG has uplink data to be transmitted, a short type or long type BSR MAC CE may be selected, so that the BSR MAC CE is adapted to different service types, and the utilization rate of air interface resources is further improved.

It should be noted that the service type can be determined based on different DRBs or LCGs, and the SDT is also preconfigured by the network side. For example, when the number of DRBs configuring the SDT is not zero, the service type can be considered as SDT. When the non-SDT LCG has uplink data to be transmitted, the service type may be regarded as non-SDT, which is not listed here.

Step 22, the BSR MAC CE is sent to the network device.

Step 23, data transmission is performed based on BSR MAC CE.

Through the process, different service types are adapted through different types of BSR MAC CEs, unnecessary waste of air interface resources is avoided, and the problem of low air interface resource utilization rate in the related technology is solved in the mode.

Referring to fig. 7, an embodiment of the present application provides a data transmission method, which may include the following steps:

step 31, when the service type is SDT, determining the type of BSR MAC CE based on the number of DRBs configured for data radio bearer of SDT.

Wherein the types of the BSR MAC CE include at least a short type, a long type, and a first type, a second type, and a third type suitable for SDT.

In one possible implementation, if the number of DRBs configuring the SDT is less than or equal to the first number, the type of the BSR MAC CE is determined to be the first type.

In one possible implementation, if the number of DRBs configuring the SDT is equal to the second number, the type of the BSR MAC CE is determined to be the second type.

In one possible implementation, if the number of DRBs configuring the SDT is greater than or equal to the third number, the type of the BSR MAC CE is determined to be the third type.

In one possible embodiment, the first number is 2, the second number is 3 and the third number is 4.

Since any type of BSR MAC CE includes an LCG field and/or a Buffer Size field, the inventors propose a multiplexing scheme that configures the LCG field in the new type of BSR MAC CE to multiplex the LCG field in the existing type of BSR MAC CE. Wherein the new types of the BSR MAC CE include at least a first type, a second type, and a third type. The existing types of BSR MAC CE include short type, long type.

Then, in one possible implementation, if the LCG field in the short type or long type BSR MAC CE is multiplexed, the first type BSR MAC CE multiplexes the LCG field in the short type BSR MAC CE; or the LCG field in the BSR MAC CE of the second type or the third type, and the LCG field in the BSR MAC CE of the long type are multiplexed, so that the utilization rate of air interface resources can be further improved.

In a possible implementation manner, if the short type or the long type of the LCG field in the BSR MAC CE is not multiplexed, when the number of DRBs configuring the SDT is one, the type of the BSR MAC CE is determined to be the short type; or when the number of the DRBs configured with the SDT is more than two, the type of the BSR MAC CE is determined to be the long type, so that the existing type of BSR MAC CE and the new type of BSR MAC CE can be simultaneously supported, the universality of the BSR MAC CE is improved, and the application scene of the BSR MAC CE is favorably expanded.

It is added that whether to multiplex the LCG field in the BSR MAC CE of short type or long type is based on the indication of the indication message. In one possible embodiment, the indication message may be configured in a protocol data unit PDU of the link control layer MAC.

For example, fig. 8 illustrates a schematic diagram of a protocol data unit PDU of a link control layer MAC. In fig. 8, any one of the reserved bits R may be configured as an indication message. For example, R ═ 0 indicates that the LCG field in the BSR MAC CE of short type or long type is not multiplexed. R ═ 1, denotes the LCG field in the BSR MAC CE multiplexing short type or long type.

Step 32, the BSR MAC CE is sent to the network device.

And step 33, performing uplink authorization for the user equipment according to the BSR MAC CE.

The uplink grant means that after receiving the BSR MAC CE, the network device may schedule radio bearer RB resources for the user equipment based on the Buffer Size field in the BSR MAC CE.

And step 34, performing data transmission based on the uplink grant.

That is, the ue may transmit uplink data using the RB resource based on the logical channel associated with the Buffer Size field. For example, the uplink data may be the remaining small data or the new small data.

The following describes in detail the determination procedure of different types of BSR MAC CEs based on the service type being SDT.

Referring to fig. 9, an embodiment of the present application provides a data transmission method, which may include the following steps:

step 41, if the number of DRBs configuring the SDT is less than or equal to the first number, determining that the type of the BSR MAC CE is the first type.

Wherein the first number is 2. That is, when the number of DRBs configuring the SDT is 1 or 2, the type of the BSR MAC CE is determined to be the first type.

It should be noted that, when the number of DRBs configuring the SDT is 1, the method is not limited to use the first type BSR MAC CE, and may also use a short type BSR MAC CE, which is not specifically limited in this embodiment.

Fig. 10 illustrates a diagram of a first type of BSR MAC CE. In fig. 10, the first type of BSR MAC CE includes 2 Buffer Size fields.

Each Buffer Size field is 4 bits in length and is used for indicating the number of RB resources that need to be used by uplink data to be transmitted.

In the first type, each Buffer Size field is associated with a logical channel in the logical channel group. For example, in one possible implementation, the Buffer Size field Buffer Size 2 located at the high 4 bits in the BSR MAC CE is associated with a logical channel with a large LCG ID. The Buffer Size field Buffer Size 1 located at the lower 4 bits of the BSR MAC CE is associated with a logical channel with a smaller LCG ID. Alternatively, in one possible implementation, the Buffer Size field Buffer Size 2 located at the high 4 bits in the BSR MAC CE is associated with a logical channel with a smaller LCG ID. The Buffer Size field Buffer Size 1 located at the lower 4 bits of the BSR MAC CE is associated with a logical channel with a larger LCG ID.

For example, 2 DRBs are configured with SDTs corresponding to LCGs, respectively ₂ 、LCG ₄ Then LCG ₂ A Buffer Size field Buffer Size 1 located 4 lower in the BSR MAC CE may be associated. LCG ₄ Buffer Size field Buffer S capable of being associated with high 4 bits in BSR MAC CEize 2。

Similar to the aforementioned existing type (for example, short type or long type), here, the value of the 4-bit Buffer Size field is 0-15, and the indicated amount of RB resources that need to be used for uplink data to be transmitted can still be determined by table lookup, as shown in the following table 3:

BS value (in bytes) corresponding to numerical value Index of bit Buffer Size field of Table 34

Index	Buffer Size(BS)value[bytes]	Index	Buffer Size(BS)value[bytes]
				0	BS＝0	8	67<BS<＝91
1	0<BS<＝10	9	91<BS<＝125
				2	10<BS<＝14	10	125<BS<＝171
3	14<BS<＝19	11	171<BS<＝234
				4	19<BS<＝26	12	234<BS<＝321
5	26<BS<＝36	13	321<BS<＝768
				6	36<BS<＝49	14	768<BS<＝1500
7	49<BS<＝67	15	BS>1500

Here, table 3 only illustrates the BS value corresponding to the value Index of the Buffer Size field (i.e. the number of RB resources that need to be used to indicate uplink data to be transmitted), and in other embodiments, the BS value may be adjusted according to actual needs of an application scenario, which is not specifically limited herein.

And step 42, sending the BSR MAC CEs carrying the first number of Buffer Size fields to the network device.

After the type of the BSR MAC CE is determined, the BSR MAC CE needs to be configured according to whether uplink data to be transmitted exists in each logical channel in the logical channel group and data of RB resources that the uplink data to be transmitted needs to use.

Specifically, for each Buffer Size field, if there is no uplink data to be transmitted in the logical channel associated with the Buffer Size field, the value Index of the Buffer Size field is configured to be 0.

If the logical channel associated with the Buffer Size field has uplink data to be transmitted, configuring a corresponding numerical value Index for the Buffer Size field according to the RB resource BS value that needs to be used by the uplink data to be transmitted based on the corresponding relationship between the Index and the BS value in table 3.

After the configuration of the BSR MAC CE is completed, the BSR MAC CE carrying the 2 Buffer Size fields is sent to the network device.

It should be noted that, in this embodiment, the length of the BSR MAC CE is fixed, that is, the BSR MAC CE includes 2 Buffer Size fields. That is to say, no matter whether the value Index of the Buffer Size field is zero or not, the network device is notified, and in this way, the logical channel in which the uplink data to be transmitted exists is distinguished, so that the purpose of saving the LCG field is achieved, and the utilization rate of air interface resources is effectively improved.

And step 43, scheduling Radio Bearer (RB) resources for the user equipment based on the Buffer Size field in the BSR MAC CE.

And step 44, transmitting the uplink data by using the RB resource based on the logical channel associated with the Buffer Size field.

For example, assume that the logical channel associated with the Buffer Size field in the BSR MAC CE is the LCG in the logical channel group ₂ The value Index of the Buffer Size field is 4.

Based on this, through table 3, the network device determines that the RB resource that needs to be used by the uplink data to be transmitted is 19< BS value < ═ 26, and then schedules a corresponding RB resource for a radio bearer for the user equipment.

Then, the UE can be based on LCG ₂ And transmitting uplink data by using the RB resource.

As can be seen from the above, for the BSR MAC CE of the first type, the LCG field is directly saved, and compared with the existing type (for example, short type or long type) of the BSR MAC CE, the length of the Buffer Size field is reduced by half, so that the utilization rate of air interface resources is effectively improved.

In addition, when the number of DRBs configured with the SDT is 2, short-type BSR MAC CEs cannot be used in the related art, and only long-type BSR MAC CEs can be used, in this case, 1 LCG field of 8 bits and 8 Buffer Size fields of 8 bits are consumed, however, actually, 2 bits are used at most in the LCG field, and 2 Buffer Size fields are used at most in the 8 Buffer Size fields, which causes unnecessary waste of air interface resources, and the length of the BSR MAC CE of the first type is only 8 bits, which greatly reduces the number of consumed bits, thereby greatly improving the utilization rate of the air interface resources.

Referring to fig. 11, an embodiment of the present application provides a data transmission method, which may include the following steps:

if the number of DRBs configuring the SDT is equal to the second number, step 51, it is determined that the type of the BSR MAC CE is the second type.

Wherein the second number is 3. That is, when the number of DRBs configuring the SDT is 3, the type of the BSR MAC CE is determined to be the second type.

Fig. 12 illustrates a diagram of a second type of BSR MAC CE. In fig. 12, the BSR MAC CE of the second type includes 1 LCG field and 3 Buffer Size fields.

The length of the LCG field is 4 bits, the LCG field includes 1 reserved bit and 3 LCG IDs, and each LCG ID is used to indicate that a logical channel to be transmitted for uplink data exists in the logical channel group. Each Buffer Size field is 4 bits in length and is used for indicating the number of RB resources that need to be used for uplink data to be transmitted.

In the second type, 3 LCG IDs and 3 Buffer Size fields are in one-to-one correspondence, and the corresponding LCG IDs and Buffer Size fields are associated with the same logical channel. For example, as shown in fig. 12, each LCG ID is denoted as LCGX, LCGY, LCGZ, and each Buffer Size field is denoted as Buffer Size 1, Buffer Size 2, Buffer Size 3. Then, in one possible embodiment, LCGX and Buffer Size 1 are associated with the logical channel with the smallest LCG ID in the logical channel group. LCGY and Buffer Size 2 associate the logical channel with the next smallest LCG ID in the logical channel group. The LCGZ and the Buffer Size 3 are associated with the logical channel with the largest LCG ID in the logical channel group.

Of course, in other embodiments, the association manner is not limited to this, and may also be adjusted according to the actual needs of the application scenario, which is not specifically limited herein. For example, LCGX and Buffer Size 1 are associated with the logical channel with the largest LCG ID in the logical channel group, and so on, LCGZ and Buffer Size 3 are associated with the logical channel with the smallest LCG ID in the logical channel group.

For example, SDT is configured for 3 DRB, corresponding to LCG respectively ₂ 、LCG ₄ 、LCG ₆ Then LCG ₂ LCGX and Buffer Size 1 can be correlated. LCG ₄ LCGY and Buffer Size 2 can be correlated. LCG ₆ LCGZ and Buffer Size 3 may be correlated.

And step 52, sending the BSR MAC CE carrying the Buffer Size field with a value not equal to zero to the network device.

After the configuration of the BSR MAC CE is completed, the BSR MAC CE carrying the Buffer Size field with a value not equal to zero is sent to the network device.

Again, with the foregoing example, assume that only LCG's are present ₄ 、LCG ₆ There is uplink data to be transmitted. Then LCGX ═ 0, is used to indicate LCG ₂ Absence of upstream dataTo be transmitted, the value Index of Buffer Size 1 is 0. LCGY 1 for indicating LCG ₄ If uplink data exist to be transmitted, the value Index of Buffer Size 2 is not equal to 0. LCGZ is 1, and is used for indicating LCG ₆ If uplink data is to be transmitted, the value Index of Buffer Size 3 is not equal to 0.

Then, the BSR MAC CE transmitted to the network device includes: LCG field, Buffer Size 2, and Buffer Size 3.

That is to say, in this embodiment, the length of the BSR MAC CE is variable, that is, only the Buffer Size field with a value not equal to zero is notified to the network device, so that unnecessary waste of air interface resources is avoided, and the utilization rate of air interface resources is effectively improved.

And step 53, scheduling Radio Bearer (RB) resources for the user equipment based on the Buffer Size field in the BSR MAC CE.

And step 54, transmitting the uplink data by using the RB resource based on the logical channel associated with the Buffer Size field.

As can be seen from the above, for the BSR MAC CE of the second type, compared to the existing type (for example, short type or long type) of the BSR MAC CE, the length of the Buffer Size field is reduced by half, and the length of the LCG field can also be reduced by half, so that the utilization rate of air interface resources is effectively improved.

In addition, when the number of DRBs configured with the SDT is 3, short-type BSR MAC CEs cannot be used in the related art, and only long-type BSR MAC CEs can be used, in this case, 1 LCG field of 8 bits and 8 Buffer Size fields of 8 bits are consumed, however, in practice, at most 3 bits are used in the LCG field, and at most 3 Buffer Size fields are used in the 8 Buffer Size fields, which causes unnecessary waste of air interface resources, while the length of the second-type BSR MAC CE is variable, and is at most 16 bits, which greatly reduces the number of consumed bits, thereby greatly improving the utilization rate of air interface resources.

Referring to fig. 13, an embodiment of the present application provides a data transmission method, which may include the following steps:

and step 61, if the number of the DRBs configuring the SDT is greater than or equal to the third number, determining that the type of the BSR MAC CE is the third type.

Wherein the third number is 4. That is, when the number of DRBs configured with SDT is 4 to 8, the type of BSR MAC CE is determined to be the third type.

Fig. 14 illustrates a diagram of a third type of BSR MAC CE. In fig. 14, the BSR MAC CE of the second type includes 1 LCG field and 8 Buffer Size fields.

The length of the LCG field is 8 bits, the LCG field includes 8 LCG IDs, and each LCG ID is used to indicate that a logical channel to be transmitted exists in the logical channel group. Each Buffer Size field is 4 bits in length and is used for indicating the number of RB resources that need to be used for uplink data to be transmitted.

In the third type, 8 LCG IDs and 8 Buffer Size fields are in one-to-one correspondence, and the corresponding LCG IDs and Buffer Size fields are associated with the same logical channel. For example, LCG ₇ 、LCG ₆ 、LCG ₅ 、LCG ₄ 、LCG ₃ 、LCG ₂ 、LCG ₁ 、LCG ₀ Logical channel 7, logical channel 6, … …, logical channel 1, logical channel 0 in the logical channel group are respectively indicated. Then, as shown in FIG. 14, each LCG ID corresponds to a respective LCG ₇ 、LCG ₆ 、LCG ₅ 、LCG ₄ 、LCG ₃ 、LCG ₂ 、LCG ₁ 、LCG ₀ Each Buffer Size field is represented as Buffer Size 1, Buffer Size 2, Buffer Size 3, … …, Buffer Size 7, and Buffer Size8, respectively. Then, in one possible embodiment, the LCG ₀ Corresponding LCG ID and Buffer Size 1 are associated with logical channel 0 in the logical channel group. LCG ₁ The corresponding LCG ID and Buffer Size 2 are associated with logical channel 1 in the logical channel group. By analogy, LCG ₇ The corresponding LCG ID and Buffer Size8 are associated with logical channel 7 in the logical channel group.

Step 62, sending the BSR MAC CE carrying the Buffer Size field with a value not equal to zero to the network device.

For example, suppose that only LCG ₄ 、LCG ₆ There is uplink data to be transmitted. Then, LCG ₄ Corresponding LCG ID ═ 1, used to indicate LCG ₄ If uplink data exist to be transmitted, the value Index of Buffer Size 5 is not equal to 0. LCG ₆ Corresponding LCG ID ═ 1, used to indicate LCG ₆ If uplink data exist to be transmitted, the value Index of Buffer Size 7 is not equal to 0. With respect to the remaining logical channels, LCG _i Corresponding LCG ID is 0 for indicating LCG _i There is no uplink data to be transmitted, and the value Index of Buffer Size j is 0.

Then, the BSR MAC CE transmitted to the network device includes: LCG field, Buffer Size 5, and Buffer Size 7.

And step 63, scheduling Radio Bearer (RB) resources for the user equipment based on the Buffer Size field in the BSR MAC CE.

And step 64, transmitting the uplink data by using the RB resources based on the logical channel associated with the Buffer Size field.

As can be seen from the above, for the third type of BSR MAC CE, compared to the existing type (for example, short type or long type) of BSR MAC CE, the length of the Buffer Size field is reduced by half, so that the utilization rate of air interface resources is effectively improved in this way.

In addition, the length of the BSR MAC CE is variable, that is, only the Buffer Size field with a value not equal to zero is notified to the network device, so that unnecessary waste of air interface resources is avoided, and the utilization rate of the air interface resources is effectively improved.

Referring to fig. 15, an embodiment of the present application provides a data transmission method, as shown in fig. 15c, the method may include the following steps:

step 71, determining an indication message based on a protocol data unit PDU of the link control layer MAC.

The indication message is used for indicating whether to multiplex a logical channel group field in the short type or long type BSR MAC CE.

Referring back to fig. 8, as shown in fig. 8, in the protocol data unit PDU of the link control layer MAC, any one of the reserved bits R may be configured as an indication message. For example, R ═ 0 indicates that the LCG field in the BSR MAC CE of short type or long type is not multiplexed. R ═ 1, denotes the LCG field in the BSR MAC CE multiplexing short type or long type.

And step 72, based on the indication message, determining whether to multiplex the LCG field in the BSR MAC CE of short type or long type.

If the LCG field in the BSR MAC CE of short type or long type is multiplexed, step 73 is performed.

Otherwise, if the LCG field in the short type or long type BSR MAC CE is not multiplexed, step 74 is performed.

Step 73, based on the new type of BSR MAC CE, further determine the number of DRBs configuring the SDT.

Wherein the new types of BSR MAC CEs include at least a first type, a second type, and a third type applicable for SDT.

In step 731, if the number of DRBs configuring the SDT is less than or equal to the first number, the type of the BSR MAC CE is determined to be the first type.

In one possible embodiment, the first number is 2. Fig. 10 illustrates a diagram of a first type of BSR MAC CE. In fig. 10, the first type of BSR MAC CE includes 2 Buffer Size fields. Each Buffer Size field is 4 bits in length.

The first type BSR MAC CE may multiplex the LCG field in the short type BSR MAC CE. For example, the Buffer Size field Buffer Size 1 located at the lower 4 bits of the BSR MAC CE is associated with the same logical channel as the LCG field in the short type BSR MAC CE.

In step 732, if the number of DRBs configuring the SDT is equal to the second number, the type of the BSR MAC CE is determined to be the second type.

In one possible embodiment, the second number is 3. Fig. 15a illustrates a schematic diagram of a second type of BSR MAC CE. In fig. 15a, the second type of BSR MAC CE includes 1 LCG field and 3 Buffer Size fields. The length of the LCG field is 4 bits, and the length of each Buffer Size field is 4 bits.

The LCG field includes 1 reserved bit and 3 LCG IDs. The LCG field may multiplex any 3 bits of the LCG field in the long type BSR MAC CE, as indicated by the shaded portion. For example, the 3 LCG IDs in the LCG field may multiplex the lower 3 bits of the LCG field in the long type BSR MAC CE.

In step 733, if the number of DRBs configuring the SDT is greater than or equal to the third number, it is determined that the type of the BSR MAC CE is the third type.

In one possible embodiment, the third number is 4. Fig. 15b illustrates a diagram of a third type of BSR MAC CE. In fig. 15b, the second type of BSR MAC CE includes 1 LCG field and 8 Buffer Size fields. The length of the LCG field is 8 bits, and the length of each Buffer Size field is 4 bits.

The LCG field includes 8 LCG IDs. The LCG field may multiplex the LCG field in the long type BSR MAC CE, as shown by the shaded portion.

Step 74, further determining the number of DRBs configuring the SDT based on the existing type of BSR MAC CE.

Wherein, the existing types of the BSR MAC CE at least include a short type and a long type.

In step 741, if the number of DRBs configuring the SDT is one, the type of BSR MAC CE is determined to be short type.

Step 742, if the number of DRBs configuring the SDT is two or more, determine the type of BSR MAC CE is long.

Step 75, the BSR MAC CE is sent to the network device, so that the network device performs data transmission based on the BSR MAC CE.

In the above process, by multiplexing the LCG field, not only can the utilization rate of air interface resources be further improved, but also the existing type of BSR MAC CE and the new type of BSR MAC CE can be simultaneously supported, thereby improving the universality of the BSR MAC CE and facilitating the extension of the application scenario of the BSR MAC CE.

The following are embodiments of the apparatus of the present application, which may be used to implement the data transmission method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to method embodiments of the data transmission method referred to in the present application.

Referring to fig. 16, in an embodiment of the present application, a data transmission apparatus 900 is provided, which is applied to a user equipment.

The data transmission apparatus 900 includes, but is not limited to: a type determining module 910 and a data transmitting module 920.

The type determining module 910 is configured to determine the type of the BSR MAC CE based on the service type, where the type of the BSR MAC CE at least includes a short type, a long type, and a first type, a second type, and a third type suitable for a small data transmission SDT.

A data transmitting module 920, configured to transmit the BSR MAC CE to the network device, so that the network device performs data transmission based on the BSR MAC CE.

Referring to fig. 17, in an embodiment of the present application, a data transmission apparatus 1000 is provided, which is applied to a network device.

The data transmission device 1000 includes, but is not limited to: a data receiving module 1010 and a data transmitting module.

The data receiving module 1010 is configured to receive a BSR MAC CE, where the type of the BSR MAC CE is determined based on a service type, and the type of the BSR MAC CE at least includes a short type, a long type, and a first type, a second type, and a third type that are applicable to a small data transmission SDT.

A data transmission module 1020 configured to perform data transmission based on the BSR MAC CE.

It should be noted that, in the embodiment of the present application, the division of the unit and/or the module is schematic, and is only a logic function division, and another division manner may be available in actual implementation. In addition, functional units and/or modules in various embodiments of the present application may be integrated into one processing unit and/or module, or each unit and/or module may exist alone physically, or two or more units and/or modules may be integrated into one unit and/or module. The integrated units and/or modules may be implemented in the form of hardware, or may be implemented in the form of software functional units and/or modules.

The integrated units and/or modules, if implemented in the form of software functional units and/or modules and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

In addition, the data transmission device and the data transmission method provided by the above embodiments are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Therefore, different service types are adapted through different types of BSR MAC CEs, for example, when the service type is SDT, a first type, a second type, or a third type more suitable for SDT may be selected, so as to avoid unnecessary waste of air interface resources, and thus, the problem of low air interface resource utilization rate in the related art is solved.

FIG. 18 illustrates a block diagram of a network device, according to an example embodiment. The network device is suitable for use in the base station 130 of the implementation environment shown in fig. 1.

As shown in fig. 18, the network device 1100 includes at least: a processor 1110, a memory 1120, and a transceiver 1130.

Among other things, the transceiver 1130 is used to receive and transmit data under the control of the processor 1110.

In FIG. 18, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1110, and various circuits, represented by the memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1130 may be a number of elements including a transmitter and a receiver that provide a means and/or module for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like.

The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1110 in performing operations.

Alternatively, the processor 1110 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and the processor 1110 may also adopt a multi-core architecture. The processor 1110 and the memory 1120 may also be physically disposed separately.

The processor 1110, by calling the computer program stored in the memory 1120, is configured to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions.

Fig. 19 is a block diagram illustrating a structure of a user equipment according to an example embodiment. The user equipment is suitable for use in the user equipment 110 of the implementation environment shown in fig. 1.

As shown in fig. 19, the user equipment 1300 includes at least: a processor 1310, a memory 1320, and a transceiver 1330.

The transceiver 1330 for receiving and transmitting data under the control of the processor 1310.

In fig. 19, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1310, and various circuits, represented by memory 1320, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1330 may be a plurality of elements including a transmitter and a receiver that provide a means and/or module for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 1340 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

Alternatively, the processor 1310 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor 1310 may also have a multi-core architecture. The processor 1310 and the memory 1320 may also be physically separated.

The processor 1310 may be configured to invoke a computer program stored in the memory 1320 for executing any of the methods provided by the embodiments of the present application according to the obtained executable instructions.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

In addition, a storage medium is provided in the embodiments of the present application, and a computer program is stored on the storage medium, and when being executed by a processor, the computer program realizes the data transmission method in the embodiments. The storage medium may be any available media or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

The embodiment of the application provides a program product, for example, the program product is an FPGA chip or a DSP chip, and the program product includes executable instructions, and the executable instructions are stored in a storage medium. The processor reads the executable instructions from the storage medium, so that the executable instructions when executed by the processor implement the data transmission method in the above embodiments.

Compared with the related art, different service types are adapted through different types of BSR MAC CEs, for example, when the service type is SDT, a first type, a second type or a third type more suitable for the SDT can be selected, unnecessary waste of air interface resources is avoided, and the problem of low air interface resource utilization rate in the related art is solved in this way.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A data transmission method, performed by a user equipment, the method comprising:

determining the type of a BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a Small Data Transmission (SDT);

transmitting the BSR MAC CE to a network device to cause the network device to perform data transmission based on the BSR MAC CE.

2. The method of claim 1, wherein the determining the type of BSR MAC CE based on the traffic type comprises:

and when the service type is the SDT, determining the type of the BSR MAC CE based on the number of Data Radio Bearers (DRBs) for configuring the SDT.

3. The method of claim 2, wherein the determining the type of the BSR MAC CE based on the number of Data Radio Bearers (DRBs) for which the SDT is configured comprises:

if the number of the DRBs configuring the SDT is less than or equal to a first number, determining the type of the BSR MAC CE as the first type;

4. The method of claim 3, wherein the sending the BSR MAC CE to a network device comprises:

and sending the BSR MAC CEs carrying the first number of buffer size fields to the network equipment.

5. The method of claim 2, wherein the determining the type of the BSR MAC CE based on the number of Data Radio Bearers (DRBs) for which the SDT is configured comprises:

determining the type of the BSR MAC CE as a second type if the number of DRBs configuring the SDT is equal to the second number;

wherein the second type of BSR MAC CE includes one logical channel group field and a second number of buffer size fields, and the logical channel group field includes a second number of logical channel group identities.

6. The method of claim 5, wherein a length of the logical channel group field in the second type of BSR MAC CE is less than a length of the logical channel group field in the long type of BSR MAC CE.

7. The method of claim 2, wherein the determining the type of the BSR MAC CE based on the number of Data Radio Bearers (DRBs) for which the SDT is configured comprises:

if the number of the DRBs configured with the SDT is larger than or equal to a third number, determining the type of the BSR MAC CE as the third type;

wherein the third type of BSR MAC CE includes a logical channel group field and a fourth number of buffer size fields, and the logical channel group field includes a fourth number of logical channel group identifiers.

8. The method of claim 5 or 7, wherein the sending the BSR MAC CE to a network device comprises:

for each cache size field, if the logic channel associated with the cache size field does not have uplink data to be transmitted, configuring the numerical value of the cache size field to be zero;

and sending the BSR MAC CE carrying the cache size field with the numerical value not being zero to the network equipment.

9. The method of claim 3, 5, or 7, wherein the determining the type of the BSR MAC CE based on the number of Data Radio Bearers (DRBs) for which the SDT is configured further comprises:

determining an indication message based on a Protocol Data Unit (PDU) of a link control layer (MAC), wherein the indication message is used for indicating whether to multiplex a logical channel group field in the short type or long type BSR MAC CE;

if so, multiplexing a logical channel group field in the short type BSR MAC CE by the first type BSR MAC CE; or

And multiplexing the logical channel group field in the long type BSR MAC CE.

10. The method of claim 9, wherein the determining the type of the BSR MAC CE based on a number of data radio bearers, DRBs, for which SDT is configured further comprises:

if the indication message indicates no multiplexing, determining that the type of the BSR MAC CE is short type when the number of the DRBs configuring the SDT is one; or

And when the number of the DRBs for configuring the SDT is more than two, determining the type of the BSR MAC CE as a long type.

11. The method of claim 3, 5, or 7, wherein a length of the buffer size field in the first, second, or third type of BSR MAC CE is less than a length of the buffer size field in the short type or long type of BSR MAC CE.

12. A data transmission method, performed by a network device, the method comprising:

receiving a BSR MAC CE, wherein the type of the BSR MAC CE is determined based on service types, and the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are applicable to a small data transmission SDT;

performing data transmission based on the BSR MAC CE.

13. The method of claim 12, wherein the first type of BSR MAC CE includes a first number of buffer size fields;

the second type of BSR MAC CE includes a logical channel group field and a second number of buffer size fields, the logical channel group field including a second number of logical channel group identities;

the third type of BSR MAC CE includes a logical channel group field and a fourth number of buffer size fields, and the logical channel group field includes a fourth number of logical channel group identifiers.

14. The method of claim 13, wherein a length of the buffer size field in the first, second, or third type of BSR MAC CE is less than a length of the buffer size field in the short type or long type of BSR MAC CE.

15. The method of claim 13, wherein a length of the logical channel group field in the second type of BSR MAC CE is less than a length of the logical channel group field in the long type of BSR MAC CE.

16. The method of claim 13, wherein the performing data transmission based on the BSR MAC CE comprises:

and when the service type is SDT, uplink authorization is carried out on the user equipment according to the BSR MAC CE.

17. The method of claim 16, wherein the uplink grant for the user equipment according to the BSR MAC CE comprises:

and scheduling Radio Bearer (RB) resources for the user equipment based on the buffer size field in the BSR MAC CE so that the user equipment transmits uplink data by using the RB resources based on the logic channel associated with the buffer size field.

18. A user device, comprising: a memory, a transceiver, and a processor;

wherein the memory is used for storing a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and executing the following steps:

19. The user device of claim 18, wherein the processor is further configured to perform the steps of:

20. The user equipment of claim 19, wherein the processor is further configured to perform the steps of:

21. The user equipment of claim 19, wherein the processor is further configured to perform the steps of:

22. The method of claim 21, wherein a length of the logical channel group field in the second type of BSR MAC CE is less than a length of the logical channel group field in the long type of BSR MAC CE.

23. The user equipment of claim 19, wherein the processor is further configured to perform the steps of:

24. The method of claim 20, 21, or 23, wherein a length of the buffer size field in the first, second, or third type of BSR MAC CE is less than a length of the buffer size field in the short type or long type of BSR MAC CE.

25. A network device, comprising: a memory, a transceiver, and a processor;

performing data transmission based on the BSR MAC CE.

26. The network device of claim 25, wherein the first type of BSR MAC CE includes a first number of buffer size fields;

27. The method of claim 26, wherein a length of the buffer size field in the first, second, or third type of BSR MAC CE is less than a length of the buffer size field in the short type or long type of BSR MAC CE.

28. The method of claim 26, wherein a length of the logical channel group field in the second type of BSR MAC CE is less than a length of the logical channel group field in the long type of BSR MAC CE.

29. A data transmission apparatus, applied to a user equipment, the apparatus comprising:

the type determining module is used for determining the type of the BSR MAC CE based on the service type, wherein the type of the BSR MAC CE at least comprises a short type, a long type, a first type, a second type and a third type which are suitable for Small Data Transmission (SDT);

a data transmission module, configured to transmit the BSR MAC CE to a network device, so that the network device performs data transmission based on the BSR MAC CE.

30. A data transmission apparatus, applied to a network device, the apparatus comprising:

a data receiving module, configured to receive a BSR MAC CE, where the type of the BSR MAC CE is determined based on a service type, and the type of the BSR MAC CE at least includes a short type, a long type, and a first type, a second type, and a third type that are applicable to a small data transmission SDT;

a data transmission module, configured to perform data transmission based on the BSR MAC CE.

31. A storage medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the data transmission method according to any one of claims 1 to 11 or 12 to 17.