CN111065167B

CN111065167B - BSR reporting method, terminal and network side equipment

Info

Publication number: CN111065167B
Application number: CN201811210680.4A
Authority: CN
Inventors: 赵亚利; 谌丽
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2023-06-30
Anticipated expiration: 2038-10-17
Also published as: CN111065167A

Abstract

The embodiment of the invention provides a BSR reporting method, a terminal and network side equipment, wherein the method comprises the following steps: the terminal reports the BSR of the direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of the direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface. Therefore, the network side equipment distinguishes the communication mode of the direct communication interface through the BSR, so that more accurate scheduling can be performed according to the communication mode, and further the resource scheduling effect of the network side on the direct communication is improved.

Description

BSR reporting method, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network side device for reporting a buffer status report (Buffer Status Report, BSR).

Background

The existing Vehicle-to-everything (V2X) technology mainly supports services for guaranteeing basic road safety, and the adopted communication mode is broadcast communication. However, with further development of the internet of vehicles technology, some new application scenarios will appear, such as: remote control, fleet communication, etc., some or all of these application scenarios require unicast communication between terminals. In this way, unicast or multicast (e.g., broadcast or multicast) communication may occur in V2X communication, and V2X communication is direct communication, that is, direct communication between terminals, so that communication between terminals is unicast or multicast, and the network side is not aware, which results in poor resource scheduling effect of the network side on direct communication.

Disclosure of Invention

The embodiment of the invention provides a BSR reporting method, a terminal and network side equipment, which are used for solving the problem that the network side has poor resource scheduling effect on direct communication.

The embodiment of the invention provides a BSR reporting method, which comprises the following steps:

the terminal reports the BSR of the direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of the direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the BSR includes indication information, where the indication information is used to distinguish a buffer status of unicast communication and multicast communication of the direct communication interface, or distinguish a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the indication information is included in a MAC sub-header corresponding to a control element medium (Buffer Status Report Media Access Control Control Element, MAC CE) of the medium access control of the buffer status report.

Optionally, the indication information is a logical channel identification (logical channel identifier, LCID), and the BSR includes at least one of:

A first BSR MAC CE, where an LCID in a MAC subheader corresponding to the first BSR MAC CE is used to indicate that the first BSR MAC CE is a BSR MAC CE for unicast communication of the direct communication interface, and the first BSR MAC CE includes a buffer status of a logical channel or a logical channel group corresponding to unicast communication of the direct communication interface;

and the LCID in the MAC subheader corresponding to the second BSR MAC CE is used for indicating that the second BSR MAC CE is the BSR MAC CE of the direct communication interface multicast communication, and the second BSR MAC CE comprises the buffer area state of the logic channel or the logic channel group corresponding to the direct communication interface multicast communication.

Optionally, for a logical channel group, a buffer status of a logical channel corresponding to unicast communication included in the logical channel group is carried by the first BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication contained in the logical channel group is carried by the second BSR MAC CE.

Optionally, the indication information is LCID, and the BSR includes at least one of the following:

a third BSR MAC CE, where an LCID in a MAC subheader corresponding to the third BSR MAC CE is used to indicate that the third BSR MAC CE is a BSR MAC CE for unicast communication of the direct communication interface, and the third BSR MAC CE includes a buffer status of a logical channel or a logical channel group corresponding to unicast communication of the direct communication interface;

A fourth BSR MAC CE, where an LCID in a MAC subheader corresponding to the fourth BSR MAC CE is used to indicate that the fourth BSR MAC CE is a BSR MAC CE for multicast communication of the direct communication interface, and the fourth BSR MAC CE includes a buffer status of a logical channel or a logical channel group corresponding to the multicast communication of the direct communication interface;

and the LCID in the MAC sub-header corresponding to the fifth BSR MAC CE is used for indicating that the fifth BSR MAC CE is the BSR MAC CE for broadcasting communication of the direct communication interface, and the fifth BSR MAC CE comprises the buffer area state of the logic channel or the logic channel group corresponding to the broadcasting communication of the direct communication interface.

Optionally, for a logical channel group, the buffer status of a logical channel corresponding to unicast communication included in the logical channel group is carried by the third BSR MAC CE; the buffer area state of the logic channel corresponding to the multicast communication contained in the logic channel group is carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication contained in the logical channel group is carried by the fifth BSR MAC CE.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, the indication information is carried based on the target identification or based on the logical channel group.

Optionally, if the same logical channel group includes both a logical channel corresponding to unicast communication and a logical channel corresponding to multicast communication, the buffer status of the logical channel corresponding to unicast communication in the logical channel group and the buffer status of the logical channel corresponding to multicast communication in the logical channel group need to be reported in the BSR MAC CE for the same logical channel group, and the indication information is carried for each buffer status; or,

if the same logic channel group contains both logic channels using unicast and logic channels using multicast and broadcast, the buffer area states of the logic channels corresponding to the unicast communication in the logic channel group, the buffer area states of the logic channels corresponding to the multicast communication in the logic channel group and the buffer area states of the logic channels corresponding to the broadcast communication in the logic channel group need to be reported respectively for the same logic channel group in the BSR MAC CE, and the indication information is carried respectively for each buffer area state.

Optionally, if the indication information is carried based on the target identifier and the BSR includes a plurality of identical target identifiers, the indication information is carried only when the target identifier first appears in the BSR MAC CE.

Optionally, the method further comprises:

the terminal receives configuration information of a network side, wherein the configuration information distinguishes the buffer status of unicast communication and multicast communication of the direct communication interface through a logical channel group identification LCG ID, or distinguishes the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface can be distinguished through the LCG ID.

Optionally, the transmission modes of the logical channels in the same logical channel group in the logical channel group corresponding to the BSR are the same, where the transmission modes refer to unicast communication or multicast communication, or the transmission modes refer to unicast communication, multicast communication or broadcast communication; or alternatively

The configuration information configures a plurality of logical channel groups corresponding to the same set of quality of service (Quality of Service, qoS) parameters, and the unicast communication and the multicast communication use different logical channel groups, or the unicast communication, the multicast communication and the broadcast communication use different logical channel groups.

Optionally, before the terminal reports the BSR of the direct communication link, the method further includes:

the terminal reports auxiliary information, wherein the auxiliary information comprises at least one of the following items:

a logic channel identifier and a transmission mode of a logic channel corresponding to the logic channel identifier;

QoS parameters of a logical channel.

the network side equipment receives a BSR of a direct communication link reported by the terminal, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of a direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the buffer is included in a MAC subheader corresponding to the BSR MAC CE.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, the method further comprises:

the network side equipment sends configuration information to the terminal, wherein the configuration information distinguishes the buffer status of unicast communication and multicast communication of the direct communication interface through a logical channel group identification LCG ID, or distinguishes the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface can be distinguished through the LCG ID.

The configuration information configures a plurality of logic channel groups corresponding to the same set of QoS parameters, and the unicast communication and the multicast communication use different logic channel groups or the unicast communication, the multicast communication and the broadcast communication use different logic channel groups.

Optionally, the method further comprises:

the network side equipment receives auxiliary information reported by the terminal, wherein the auxiliary information comprises at least one of the following items:

QoS parameters of a logical channel.

The embodiment of the invention also provides a terminal, which comprises:

the first reporting module is configured to report a BSR of a direct communication link, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the terminal further includes:

the receiving module is used for receiving configuration information of a network side, wherein the configuration information is used for distinguishing the buffer area states of unicast communication and multicast communication of the direct communication interface through a logical channel group identification LCG ID, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer area states of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

The embodiment of the invention also provides a network side device, which comprises:

the first receiving module is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the network side device further includes:

and the sending module is used for sending configuration information to the terminal, wherein the configuration information is used for distinguishing the buffer area states of unicast communication and multicast communication of the direct communication interface through a logical channel group identification LCG ID, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer area states of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

The embodiment of the invention also provides a terminal, which comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

the transceiver is configured to report a BSR of a direct communication link, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication, and broadcast communication of the direct communication interface.

Optionally, the indication information is included in a MAC subheader corresponding to a control unit BSR MAC CE of the medium access control of the buffer status report; or alternatively

The indication information is contained in the BSR MAC CE.

Optionally, the transceiver is further configured to:

receiving configuration information of a network side, wherein the configuration information is used for distinguishing the buffer area states of unicast communication and multicast communication of the direct communication interface through a logic channel group identification LCG ID, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer area states of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

The embodiment of the invention also provides a network side device, which comprises: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

the transceiver is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the buffer status information is contained in a MAC subheader corresponding to the BSR MAC CE; or alternatively

The indication information is contained in the BSR MAC CE.

Optionally, the transceiver is further configured to:

and sending configuration information to the terminal, wherein the configuration information is used for distinguishing the buffer area states of unicast communication and multicast communication of the direct communication interface through a logic channel group identification LCG ID, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer area states of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguishing the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

The embodiment of the invention provides a computer readable storage medium, on which a computer program is stored, the program when executed by a processor realizes the steps in the BSR reporting method at the terminal side provided by the embodiment of the invention, or the program when executed by the processor realizes the steps in the BSR reporting method at the network side device side provided by the embodiment of the invention.

In the embodiment of the invention, the terminal reports the BSR of the direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of the direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface. Therefore, the network side equipment distinguishes the communication mode of the direct communication interface through the BSR, so that more accurate scheduling can be performed according to the communication mode, and further the resource scheduling effect of the network side on the direct communication is improved.

Drawings

FIG. 1 is a schematic diagram of a network architecture to which embodiments of the present invention are applicable;

fig. 2 is a flowchart of a BSR reporting method provided in an embodiment of the present invention;

fig. 3 is a schematic diagram of a BSR MAC CE according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another BSR MAC CE according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of another BSR MAC CE according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another BSR MAC CE provided by an embodiment of the present invention;

fig. 7 is a schematic diagram of another BSR MAC CE according to an embodiment of the present invention;

fig. 8 is a flowchart of another BSR reporting method according to an embodiment of the present invention;

fig. 9 is a block diagram of a terminal according to an embodiment of the present invention;

fig. 10 is a block diagram of another terminal according to an embodiment of the present invention;

fig. 11 is a block diagram of another terminal according to an embodiment of the present invention;

fig. 12 is a block diagram of a network side device according to an embodiment of the present invention;

fig. 13 is a block diagram of another network side device according to an embodiment of the present invention;

fig. 14 is a block diagram of another network side device according to an embodiment of the present invention;

fig. 15 is a block diagram of another terminal according to an embodiment of the present invention;

fig. 16 is a block diagram of another network side device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, fig. 1 is a schematic diagram of a network structure to which an embodiment of the present invention is applicable, as shown in fig. 1, including a plurality of terminals 11 and a network side device 12, where the terminals 11 may be User Equipment (UE) or other terminal devices, for example: terminal-side devices such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (personal digital assistant, PDA for short), a mobile internet Device (Mobile Internet Device, MID) or a Wearable Device (weardable Device), it should be noted that the specific type of the terminal is not limited in the embodiment of the present invention. The link between terminals 11 that can directly communicate is called a sidlink (translated into a direct communication link or bypass, also called a direct communication interface), i.e. the terminals can directly communicate with each other through the sidlink. The terminals for direct communication can be both on-line or off-line, or part of the devices can be on-line and part of the devices are off-line. The network-side device 12 may be a base station, for example: macro station, LTE eNB, 5G NR NB, etc.; the network side device may also be a small station, such as a Low Power Node (LPN), pico, femto, etc., or the network side device may be an Access Point (AP); the base station may also be a network node consisting of a Central Unit (CU) together with a plurality of transmission reception points (TRP, transmission Reception Point) which it manages and controls. It should be noted that, in the embodiment of the present invention, the specific type of the network side device is not limited.

Referring to fig. 2, fig. 2 is a flowchart of a BSR reporting method according to an embodiment of the present invention, as shown in fig. 2, including the following steps:

201. the terminal reports the BSR of the direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of the direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

The BSR may be a bidelink (which may be translated into a direct communication link or a bypass, also referred to as a direct communication interface) BSR.

The multicast communication may be a multicast communication or a broadcast communication, and may be a combination of multicast communication and broadcast communication.

The buffer status of the unicast communication may refer to the buffer status of the logical channel or the logical channel group corresponding to the unicast communication of the direct communication interface, where the logical channel or the logical channel group corresponding to the unicast communication may also be referred to as a logical channel or a logical channel group of the unicast communication, or may also be referred to as a logical channel or a logical channel group using the unicast communication.

The buffer status of the multicast communication may refer to the buffer status of the logical channel or the logical channel group corresponding to the multicast communication of the direct communication interface, where the logical channel or the logical channel group corresponding to the multicast communication may also be referred to as a logical channel or a logical channel group of the multicast communication, or may also be referred to as a logical channel or a logical channel group using the multicast communication.

The buffer status of the multicast communication and the buffer status of the broadcast communication can be referred to the description of the buffer status of the unicast communication and the buffer status of the multicast communication, which are not described herein.

It should be noted that, in the embodiment of the present invention, the buffer status may also be referred to as buffer status information.

Therefore, after the network side equipment receives the BSR, the communication mode of the direct communication interface can be distinguished through the BSR, so that more accurate scheduling can be performed according to the communication mode, and further the resource scheduling effect of the network side on the direct communication is improved. For example, buffer states corresponding to unicast and multicast services (or unicast, multicast and broadcast services) can be reported independently when the buffer states of the direct communication link are reported, so that the network side can schedule unicast more accurately.

As an optional implementation manner, the BSR includes indication information, where the indication information is used to distinguish a buffer status of unicast communication and multicast communication of the direct communication interface, or distinguish a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

The indication information may be newly added indication information in the BSR, or the indication information may be obtained by extending a function of some information in the BSR.

In this embodiment, the indication information directly indicates the buffer status of the different communication modes, so that the network device can directly and accurately distinguish the buffer status of each communication mode of the direct communication interface.

In one implementation, the indication information may be included in a MAC subheader corresponding to the BSR MAC CE.

Thus, the buffer area state of each communication mode of the direct communication interface can be determined and distinguished through the MAC subheader.

In this implementation manner, the indication information may be LCID, and the BSR may include at least one of the following:

In this manner, distinguishing between unicast and multicast in BSR MAC CEs may be implemented, and specifically, different BSR MAC CEs may be defined to distinguish between unicast and multicast, for example: two BSR MAC CEs are defined for direct communication interface unicast and multicast and distinguished by LCID.

Therefore, the buffer area states of the logic channel groups corresponding to different communication modes can be carried by different BSR MAC CEs, and the buffer area states can be more favorably distinguished.

Note that, when the instruction information is LCID, the LCID may be extended, for example: taking the uplink shared channel (Uplink Shared Channel, UL-SCH) as an example, the value for UL-SCH LCID (Values of LCID for UL-SCH) can be as shown in table 1:

table 1:

/>

in this embodiment of the present invention, the extensions at least include content corresponding to 110001, 110010, 110011, 110100, and of course, in this embodiment of the present invention, specific values of the LCID are not limited, for example: the above-described unicast, multicast/broadcast BSR may also be represented by other values. The LCID may also indicate a multicast BSR, etc., and the table is merely illustrative.

Therefore, the buffer area states of the logic channels corresponding to different communication modes of the same logic channel group can be carried by different BSR MAC CEs, so that the buffer area states of the logic channels of different communication modes in the same logic channel group can be accurately distinguished. For example: when the terminal reports the buffer status, whether unicast or multicast is further distinguished according to a plurality of logical channels belonging to the same logical channel group is required, and the buffer status is reported through corresponding Sidelink BSR MAC CE.

In this manner, the BSR MAC CE may be differentiated from unicast, multicast and broadcast, and specifically different BSR MAC CE differentiation from unicast, multicast and broadcast may be defined, for example: a plurality of BSR MAC CEs are defined for direct communication interfaces unicast, multicast and broadcast and distinguished by LCID.

Further, for a logical channel group, the buffer status of the logical channel corresponding to the unicast communication included in the logical channel group may be carried by the third BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication contained in the logical channel group can be carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication contained in the logical channel group may be carried by the fifth BSR MAC CE.

Therefore, the buffer area states of the logic channels corresponding to different communication modes of the same logic channel group can be carried by different BSR MAC CEs, so that the buffer area states of the logic channels of different communication modes in the same logic channel group can be accurately distinguished. For example: when the terminal reports the buffer status, the terminal needs to further distinguish unicast, multicast and broadcast aiming at a plurality of logical channels belonging to the same logical channel group, and reports the unicast, the multicast and the broadcast through corresponding Sidelink BSR MAC CE respectively.

In another implementation, the indication information may be contained in a BSR MAC CE.

In this implementation, unicast and multicast for the direct communication interface may be implemented, or unicast and multicast/broadcast use the same BSR MAC CE, in which unicast and multicast are distinguished by indication information, or unicast and multicast/broadcast are distinguished. Since the same BSR MAC CE is used, the overhead of the BSR is reduced.

Alternatively, in this implementation, the indication information may be carried based on a target identification (Destination index) or based on a logical channel group.

This allows to distinguish whether unicast or multicast, or to distinguish unicast, multicast and broadcast, with granularity of the target identification.

And it is also possible to distinguish whether unicast or multicast or to distinguish unicast, multicast and broadcast with the logical channel group as granularity.

In this embodiment, specifically, the target identifier or the indication information based on the logical channel group may be added to the BSR MAC CE to indicate the communication manner of the target identifier or the logical channel group.

In this embodiment, the buffer status of the logical channels in different communication modes may be reported in the BSR MAC CE, so as to distinguish the buffer status of the logical channels in different communication modes in the same logical channel group. For example: when the terminal reports the buffer status, whether unicast or multicast/broadcast can be further distinguished for a plurality of logical channels belonging to the same logical channel group. Specifically, when the report is Sidelink BSR MAC CE, the Buffer status corresponding to the unicast logical channel is put in the Buffer Size (BS) domain corresponding to the unicast indication information, and the Buffer status corresponding to the multicast/broadcast logical channel is put in the BS domain corresponding to the multicast indication information, but the two logical channel group identifiers (Logical Channel Group Identifier, LCG ID) are the same.

The target identifier may be any target identifier included in the BSR.

In this embodiment, if the BSR MAC CE includes multiple identical target identifiers, only one indication information corresponding to the target identifier needs to be carried, so as to reduce the overhead of the BSR MAC CE.

As an alternative embodiment, the method further comprises:

In this embodiment, the network side may be configured to distinguish between unicast communication and multicast communication, or between unicast communication, multicast communication and broadcast communication, or between unicast and multicast/broadcast in configuring a logical channel and logical channel group mapping relationship.

Therefore, the buffer area state of the unicast communication and the multicast communication of the direct communication interface can be distinguished through the BSR under the condition that the BSR does not increase the content and does not change the BSR, or at least the buffer area state of the unicast communication, the multicast communication and the broadcast communication of the direct communication interface can be distinguished, so that the complexity is reduced and the cost of the BSR is reduced.

Optionally, in this embodiment, a transmission manner of a logical channel in the same logical channel group in the logical channel group corresponding to the BSR is the same, where the transmission manner refers to unicast communication or multicast communication, or the transmission manner refers to unicast communication, multicast communication or broadcast communication.

Therefore, when the configuration is carried out, the communication modes in the same logic channel group are the same, and the communication modes of the logic channels are distinguished directly through the LCG ID. For example: if the mapping relation between the direct communication interface logical channel and the logical channel group is directly configured by the network, the network needs to ensure unicast and multicast or the unicast and multicast/broadcast logical channels cannot be mapped into the same logical channel group.

Optionally, in the foregoing embodiment, a plurality of logical channel groups are configured in the configuration information corresponding to the same set of QoS parameters, and the unicast communication and the multicast communication use different logical channel groups, or the unicast communication, the multicast communication, and the broadcast communication use different logical channel groups.

In this embodiment, a plurality of logical channel groups may be configured for the same set of QoS parameters, where unicast communication and multicast communication use different logical channel groups, or unicast communication, multicast communication, and broadcast communication use different logical channel groups, so that the communication manner of the logical channels is directly distinguished by LCG ID. For example: if the network side only configures the mapping relation between the QoS parameter and the logic channel group, the network side needs to ensure that the same set of QoS parameter needs to correspond to two logic channel group identifications when configuring, wherein one corresponds to unicast, the other corresponds to multicast, or one corresponds to unicast and the other corresponds to multicast/broadcast. Or, the same set of QoS parameters needs to correspond to three logical channel group identities, one corresponding to unicast, the other corresponding to multicast, and the other corresponding to broadcast.

Optionally, before the terminal reports the BSR of the direct communication link in the above embodiment, the method further includes:

QoS parameters of a logical channel.

In this embodiment, since the terminal reports the auxiliary information, the network side device may combine or configure the auxiliary information when configuring the configuration information, so as to improve accuracy and efficiency of the configuration information. Of course, in the embodiment of the present invention, the auxiliary information is not limited to reporting by the terminal, for example: the network side device may be preconfigured, or predefined in a protocol, etc., which is not limited.

It should be noted that the embodiment of the present invention may be applied to a V2X communication system, or may be applied to other systems that need direct communication, such as a New Radio (NR) communication system, and the following description will be given by way of example of the NR system in the above embodiments:

example 1: differentiation by LCID

In this embodiment, the terminal determines whether the sip BSR is triggered based on the Sidelink BSR MAC CE trigger condition, and once the sip BSR is triggered, the terminal needs to organize Sidelink BSR MAC CE.

When the terminal performs buffer status reporting, it is required to further distinguish whether unicast or multicast/broadcast (or distinguish whether unicast or multicast) is performed for a plurality of logical channels belonging to the same logical channel group, and report the result through corresponding Sidelink BSR MAC CE.

Based on the above method, assume that:

target identification (Destination index, or destination ID): for indicating a communication destination identification, assuming that 3 bits are occupied;

LCG ID: logical channel group identity, assuming 2 bits are occupied;

buffer Size (Buffer Size): the buffer status size corresponding to the logical channel group is assumed to occupy 6 bits.

The Sidelink BSR MAC CE format in the NR system may be as shown in fig. 3 and 4, where the fig. 3 sidlink BSR/truncated Sidelink BSR MAC CE (N is even), where Oct may represent octet (one 8-bit group). While figure 4 shows a Sidelink BSR/truncated Sidelink BSR MAC CE (N is an odd number), R may represent a reservation.

To distinguish between unicast and multicast/broadcast (or to distinguish between unicast and multicast) when the direct communication link buffer status report is in progress, two different LCIDs may be defined for unicast and multicast/broadcast (or unicast and multicast), respectively. Namely, LCIDs corresponding to unicast and multicast/broadcast are respectively added in LCID tables corresponding to the UL-SCH of the NR system. Considering that there is a truncated Sidelink BSR MAC CE, unicast and multicast/broadcast may occupy 2 LCIDs, respectively, see table 1 for specific details, and corresponding description of table 1, which will not be repeated here.

Example 2: carrying indication information based on target identification (Destination index)

The terminal determines whether the sip BSR is triggered based on the Sidelink BSR MAC CE trigger condition, and once the sip BSR is triggered, the terminal needs to organize Sidelink BSR MAC CE.

In this embodiment, the same BSR MAC CE is used for unicast and multicast/broadcast (or unicast and multicast) of the direct communication interface, and the indication information is added to distinguish unicast and multicast/broadcast (or distinguish unicast or multicast) in the BSR MAC CE. More specifically, whether unicast or multicast/broadcast (or whether unicast or multicast) is distinguished by granularity of the destination identifier, that is, whether the logical channel corresponding to each logical channel group reported by the destination address is unicast or multicast/broadcast (or whether unicast or multicast) is indicated based on the destination address.

Based on the above method, assume that:

t: for indicating whether the target identity (Destination index) corresponds to unicast or multicast/broadcast;

target identification (Destination index): for indicating a communication destination identification, assuming that 4 bits are occupied;

LCG ID: logical channel group identity, assuming 3 bits are occupied;

buffer Size (Buffer Size): the buffer status size corresponding to the logical channel group is assumed to occupy 8 bits.

The Sidelink BSR MAC CE format schematic may be as shown in fig. 5 or as shown in fig. 6.

It should be noted that if the distinction is made at the granularity of the destination identification as unicast or multicast/broadcast (or whether the distinction is made as unicast or multicast), the T-field corresponding to one destination identification may occur only once in Sidelink BSR MAC CE. If this optimization is supported, then the second graph is used appropriately. For example: sidelink BSR MAC CE for one Destination index, if Buffer size information of different LCG IDs is to be reported, destination index +lcg id+buffer size needs to be reported once for each LCG ID; if unicast or multicast is distinguished based on Destination index, then although multiple times may occur (reporting Buffer size for different Destination index, under the LCG) in the same Destination index in the BSR MAC CE, as an optimization, the T field may be carried just before the first LCG ID Destination index, and no T indication may be carried when the other LCG IDs report Buffer size. In this case, it is preferable to use fig. 6 because fig. 6 reads Destination index first, and it can be determined whether the T-field is carried later according to what number of occurrences Destination index are in the BSR MAC CE.

Example 3: carrying the indication information based on the logic channel group

When the terminal performs buffer status report, it is necessary to further distinguish whether unicast or multicast/broadcast (or distinguish whether unicast or multicast) is performed for a plurality of logical channels belonging to the same logical channel group. When Sidelink BSR MAC CE, the buffer status information corresponding to the unicast logical channel is put in the BS domain corresponding to the unicast indication information, and the buffer status information corresponding to the multicast/broadcast logical channel is put in the BS domain corresponding to the unicast indication information, but the LCG IDs are the same.

In this embodiment, the same BSR MAC CE is used for unicast and multicast/broadcast (or unicast and multicast) of the direct communication interface, and the indication information is added to distinguish unicast and multicast/broadcast (or distinguish unicast or multicast) in the BSR MAC CE. More specifically, the logical channel group is used as granularity to distinguish whether unicast or multicast/broadcast (or distinguish whether unicast or multicast), that is, whether the buffer status report corresponding to the logical channel group is directed to unicast or multicast/broadcast (or unicast or multicast) is indicated based on the logical channel group.

Based on the above method, assume that:

t: for indicating whether the logical channel group corresponds to unicast or multicast/broadcast;

LCG ID: logical channel group identity, assuming 3 bits are occupied;

A Sidelink BSR MAC CE format schematic may be as shown in fig. 7.

Example 4: the transmission modes of the logic channels in the same logic channel group in the logic channel group corresponding to the BSR are the same

The terminal determines whether the sip BSR is triggered based on the Sidelink BSR MAC CE trigger condition, and once the sip BSR is triggered, the terminal needs to organize Sidelink BSR MAC CE. In order to ensure that the logical channels of unicast and multicast/broadcast (or unicast and multicast) need to be mapped to different logical channel groups when the terminal organizes Sidelink BSR MAC CE, the following manner needs to be considered:

if the mapping relationship between the direct communication interface logical channels and the logical channel groups is directly configured by the network, the network configuration needs to ensure that the logical channels of unicast and multicast/broadcast (or unicast and multicast) cannot be mapped into the same logical channel group.

In order to better ensure that the logic channels of unicast and multicast/broadcast (or unicast and multicast) can not be mapped to the same logic channel group when the network is configured, the terminal can report auxiliary information, and the auxiliary information content at least comprises the following contents:

the identification of the Sidelink logical channel and whether the logical channel corresponds to unicast or multicast/broadcast;

QoS parameters corresponding to the Sidelink logical channels.

Example 5: configuring multiple logical channel groups corresponding to the same set of QoS parameters

if the network side only configures the mapping relation between the QoS parameter and the logic channel group, the network side needs to ensure that the same set of QoS parameter needs to correspond to two logic channel group identifications when configuring, wherein one corresponds to unicast and the other corresponds to multicast/broadcast.

When the terminal organizes Sidelink BSR MAC CE based on the QoS parameter and the logic channel group mapping relation configured by the network side, a plurality of logic channels with the same target identifier and QoS parameter can be further grouped according to whether the corresponding service is unicast or multicast/broadcast (or whether the service is unicast or multicast), and the logic channels corresponding to the unicast are placed into the unicast logic channel group corresponding to the QoS parameter; the buffer status of the logical channel corresponding to the multicast/broadcast is put into the group of multicast/broadcast logical channels corresponding to the QoS parameter.

Referring to fig. 8, fig. 8 is a flowchart of a BSR reporting method according to an embodiment of the present invention, as shown in fig. 8, including the following steps:

801. the network side equipment receives a BSR of a direct communication link reported by the terminal, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of a direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, the method further comprises:

QoS parameters of a logical channel.

It should be noted that, as an implementation manner of the network side device corresponding to the embodiment shown in fig. 2, a specific implementation manner of the embodiment may refer to a related description of the embodiment shown in fig. 2, so that in order to avoid repeated description, the embodiment is not described again, and the same beneficial effects may be achieved.

Referring to fig. 9, fig. 9 is a block diagram of a terminal according to an embodiment of the present invention, as shown in fig. 9, a terminal 900 includes:

the first reporting module 901 is configured to report a BSR of a direct communication link, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the indication information is included in a MAC subheader corresponding to a control element BSR MAC CE of the medium access control of the buffer status report.

Optionally, the indication information is a logical channel identifier LCID, and the BSR includes at least one of the following:

Optionally, the indication information is included in a BSR MAC CE.

Optionally, as shown in fig. 10, the terminal 900 further includes:

a receiving module 902, configured to receive configuration information on a network side, where the configuration information identifies a LCG ID by a logical channel group and distinguishes a buffer status of unicast communication and multicast communication of the direct communication interface, or distinguishes a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface by the LCG ID, so as to ensure that the BSR can distinguish a buffer status of unicast communication and multicast communication of the direct communication interface by the LCG ID, or distinguish a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface by the LCG ID.

Optionally, as shown in fig. 11, the terminal 900 further includes:

the second reporting module 903 is configured to report auxiliary information, where the auxiliary information includes at least one of the following:

QoS parameters of a logical channel.

It should be noted that, in this embodiment, the above-mentioned terminal 900 may be any implementation manner of the terminal in any implementation manner of the method embodiment in the embodiment of the present invention, and any implementation manner of the terminal in the embodiment of the method embodiment of the present invention may be implemented by the above-mentioned terminal 900 in the embodiment of the present invention, and the same beneficial effects are achieved, which is not described herein again.

Referring to fig. 12, fig. 12 is a block diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 12, a network side device 1200 includes:

the first receiving module 1201 is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, as shown in fig. 13, the network side device 1200 further includes:

a sending module 1202, configured to send configuration information to the terminal, where the configuration information identifies, by using a logical channel group identifier LCG ID, a buffer status of unicast communication and multicast communication of the direct communication interface, or distinguishes, by using the LCG ID, a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface, so as to ensure that, in the BSR, the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished by using the LCG ID, or distinguish, by using the LCG ID, the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Optionally, as shown in fig. 14, the network side device 1200 further includes:

the second receiving module 1203 is configured to receive auxiliary information reported by the terminal, where the auxiliary information includes at least one of the following:

QoS parameters of a logical channel.

It should be noted that, in this embodiment, the network side device 1200 may be any implementation manner of the network side device in the method embodiment of the present invention, and any implementation manner of the network side device in the method embodiment of the present invention may be implemented by the network side device 1200 in the embodiment of the present invention, and achieve the same beneficial effects, which are not described herein again.

Referring to fig. 15, fig. 15 is a block diagram of another terminal according to an embodiment of the present invention, as shown in fig. 15, the terminal includes: a transceiver 1510, a memory 1520, a processor 1500, and a program stored on the memory 1520 and executable on the processor 1500, wherein:

The transceiver 1510 is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Wherein the transceiver 1510 may be used to receive and transmit data under the control of the processor 1500.

In fig. 15, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, as represented by processor 1500, and the memory, as represented by memory 1520, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1510 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

It should be noted that, the memory 1520 is not limited to only a terminal, and the memory 1520 and the processor 1500 may be separated at different geographical positions.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, the transceiver 1510 is further configured to receive configuration information on the network side, where the configuration information identifies the LCG ID by a logical channel group to distinguish the buffer status of unicast communication and multicast communication of the direct communication interface, or distinguishes the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface by the LCG ID, so as to ensure that the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished by the LCG ID in the BSR, or distinguishes the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface by the LCG ID.

Optionally, before the terminal reports the BSR of the direct communication link, the transceiver 1510 is further configured to:

reporting auxiliary information, wherein the auxiliary information comprises at least one of the following items:

QoS parameters of a logical channel.

It should be noted that, in this embodiment, the above-mentioned terminal may be any terminal of any implementation manner in the method embodiment in this embodiment, any implementation manner of the terminal in the method embodiment in this embodiment may be implemented by the above-mentioned terminal in this embodiment, and the same beneficial effects are achieved, which are not described herein again.

Referring to fig. 16, fig. 16 is a block diagram of another network side device according to an embodiment of the present invention, as shown in fig. 16, where the network side device includes: a transceiver 1610, a memory 1620, a processor 1600, and a program stored on the memory 1620 and executable on the processor, wherein:

the transceiver 1610 is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

Among other things, transceiver 1610 may be used to receive and transmit data under the control of processor 1600.

In fig. 16, a bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 1600, and various circuits of memory, represented by memory 1620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1610 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.

It should be noted that the memory 1620 is not limited to the network device, and the memory 1620 and the processor 1600 may be separately located in different geographic locations.

Optionally, the indication information is included in a BSR MAC CE.

Optionally, the transceiver 1610 is further configured to:

Optionally, the transceiver 1610 is further configured to: the network side equipment receives auxiliary information reported by the terminal, wherein the auxiliary information comprises at least one of the following items:

QoS parameters of a logical channel.

It should be noted that, in this embodiment, the network side device may be any network side device of any implementation manner in the method embodiment of the present invention, and any implementation manner of the network side device in the method embodiment of the present invention may be implemented by the network side device in the embodiment of the present invention, and the same beneficial effects are achieved, which is not repeated herein.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which is characterized in that the program when executed by a processor implements the steps in the BSR reporting method at the terminal side provided by the embodiment of the invention, or the program when executed by the processor implements the steps in the BSR reporting method at the network side device side provided by the embodiment of the invention.

In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method for processing information data blocks according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. The method for reporting the Buffer Status Report (BSR) is characterized by comprising the following steps:

the terminal reports a BSR of a direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of a direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

the BSR includes indication information, where the indication information is used to distinguish a buffer status of unicast communication and multicast communication of the direct communication interface, or distinguish a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

the indication information is contained in a MAC subheader corresponding to a control unit BSR MAC CE of the media access control of the buffer status report; alternatively, the indication information is included in the BSR MAC CE and is carried based on a target identification or based on a logical channel group.

2. The method of claim 1, wherein the indication information is a logical channel identification, LCID, and the BSR comprises at least one of:

3. The method of claim 2, wherein for a logical channel group, a buffer status of a logical channel corresponding to unicast communications included in the logical channel group is carried by the first BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication contained in the logical channel group is carried by the second BSR MAC CE.

4. The method of claim 1, wherein the indication information is an LCID, and the BSR includes at least one of:

5. The method of claim 4, wherein for a logical channel group, a buffer status of a logical channel corresponding to unicast communications included in the logical channel group is carried by the third BSR MAC CE; the buffer area state of the logic channel corresponding to the multicast communication contained in the logic channel group is carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication contained in the logical channel group is carried by the fifth BSR MAC CE.

6. The method of claim 1, wherein if the same logical channel group includes both a logical channel corresponding to unicast communication and a logical channel corresponding to multicast communication, buffer status of the logical channel corresponding to unicast communication in the logical channel group and buffer status of the logical channel corresponding to multicast communication in the logical channel group are required to be reported in the BSR MAC CE for the same logical channel group, and the indication information is carried for each buffer status; or,

7. The method of claim 1, wherein if the indication information is carried based on a target identifier and the BSR includes a plurality of identical target identifiers, the indication information is only carried when the target identifier first appears in a BSR MAC CE.

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

9. The method of claim 8, wherein a transmission manner of a logical channel in a same logical channel group in the logical channel group corresponding to the BSR is the same, the transmission manner refers to unicast communication or multicast communication, or the transmission manner refers to unicast communication, multicast communication or broadcast communication; or alternatively

10. The method of claim 9, wherein before the terminal reports the BSR of the direct communication link, the method further comprises:

QoS parameters of a logical channel.

11. The BSR reporting method is characterized by comprising the following steps:

the network side equipment receives a BSR of a direct communication link reported by a terminal, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of a direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

the indication information is contained in a MAC subheader corresponding to the BSR MAC CE; alternatively, the indication information is included in the BSR MAC CE and is carried based on a target identification or based on a logical channel group.

12. The method of claim 11, wherein the indication information is an LCID, and the BSR includes at least one of:

13. The method of claim 12, wherein for a logical channel group, a buffer status of a logical channel corresponding to unicast communications included in the logical channel group is carried by the first BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication contained in the logical channel group is carried by the second BSR MAC CE.

14. The method of claim 11, wherein the indication information is an LCID, and the BSR includes at least one of:

15. The method of claim 14, wherein for a logical channel group, a buffer status of a logical channel corresponding to unicast communications included in the logical channel group is carried by the third BSR MAC CE; the buffer area state of the logic channel corresponding to the multicast communication contained in the logic channel group is carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication contained in the logical channel group is carried by the fifth BSR MAC CE.

16. The method of claim 11, wherein if the same logical channel group includes both a logical channel corresponding to unicast communication and a logical channel corresponding to multicast communication, buffer status of the logical channel corresponding to unicast communication in the logical channel group and buffer status of the logical channel corresponding to multicast communication in the logical channel group are required to be reported in the BSR MAC CE for the same logical channel group, and the indication information is carried for each buffer status; or,

17. The method of claim 11, wherein if the indication information is carried based on a target identifier and the BSR includes a plurality of identical target identifiers, the indication information is only carried when the target identifier first appears in a BSR MAC CE.

18. The method of claim 11, wherein the method further comprises:

19. The method of claim 18, wherein a transmission manner of a logical channel in a same logical channel group in the logical channel group corresponding to the BSR is the same, the transmission manner refers to unicast communication or multicast communication, or the transmission manner refers to unicast communication, multicast communication or broadcast communication; or alternatively

20. The method of claim 19, wherein the method further comprises:

QoS parameters of a logical channel.

21. A terminal, comprising:

the first reporting module is used for reporting the BSR of the direct communication link, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of the direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

the BSR comprises indication information, wherein the indication information is used for distinguishing the buffer status of unicast communication and multicast communication of the direct communication interface or distinguishing the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

22. The terminal of claim 21, wherein the terminal further comprises:

the first receiving module is configured to receive configuration information of a network side, where the configuration information distinguishes a buffer status of unicast communication and multicast communication of the direct communication interface through a logical channel group identifier LCGID, or distinguishes a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through an LCG ID, so as to ensure that the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguishes the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

23. A network side device, comprising:

the first receiving module is used for receiving a BSR of a direct communication link reported by the terminal, wherein the BSR can at least distinguish the buffer status of unicast communication and multicast communication of a direct communication interface or at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

24. The network-side device of claim 23, wherein the network-side device further comprises:

25. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, characterized in that,

the transceiver is configured to report a BSR of a direct communication link, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication, and broadcast communication of the direct communication interface;

the indication information is contained in a MAC subheader corresponding to a control unit BSR MAC CE of the media access control of the buffer status report; or alternatively

The indication information is contained in the BSR MAC CE and carried based on a target identity or based on a logical channel group.

26. The terminal of claim 25, wherein the transceiver is further configured to:

27. The terminal of claim 26, wherein a transmission manner of a logical channel in a same logical channel group in the logical channel group corresponding to the BSR is the same, the transmission manner refers to unicast communication or multicast communication, or the transmission manner refers to unicast communication, multicast communication or broadcast communication; or alternatively

28. A network side device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, characterized in that,

the transceiver is configured to receive a BSR of a direct communication link reported by a terminal, where the BSR is capable of distinguishing at least a buffer status of unicast communication and multicast communication of a direct communication interface, or at least a buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface;

The indication information is contained in a MAC subheader corresponding to the BSR MAC CE; or alternatively

29. The network-side device of claim 28, wherein the transceiver is further to:

30. The network side device of claim 29, wherein transmission modes of logical channels in a same logical channel group in the logical channel group corresponding to the BSR are the same, the transmission modes refer to unicast communication or multicast communication, or the transmission modes refer to unicast communication, multicast communication or broadcast communication; or alternatively

31. A computer readable storage medium having stored thereon a computer program, wherein the program when executed by a processor performs the steps of the BSR reporting method according to any of claims 1 to 10, or wherein the program when executed by a processor performs the steps of the BSR reporting method according to any of claims 11 to 20.