CN111065167A

CN111065167A - BSR reporting method, terminal and network side equipment

Info

Publication number: CN111065167A
Application number: CN201811210680.4A
Authority: CN
Inventors: 赵亚利; 谌丽
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-10-17
Filing date: 2018-10-17
Publication date: 2020-04-24
Anticipated expiration: 2038-10-17
Also published as: CN111065167B

Abstract

The embodiment of the invention provides a BSR reporting method, a terminal and network side equipment, wherein the method comprises the following steps: and 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 a direct communication interface, or can 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 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 (BSR).

Background

The existing Vehicle-to-everything (V2X) technology mainly supports services for ensuring basic road safety, and the adopted communication mode is broadcast communication. However, with the further development of the car networking technology, new application scenarios will appear, such as: remote control, fleet communication, etc., some or all of which require unicast communication between terminals. In this way, unicast or multicast (for example, broadcast or multicast) communication may occur in V2X communication, and V2X communication is direct communication, that is, direct communication between terminals, so that the terminals perform unicast or multicast communication, and the network side does not know the communication, thereby resulting in poor resource scheduling effect for direct communication by the network side.

Disclosure of Invention

The embodiment of the invention provides a BSR reporting method, a terminal and a network side device, which aim to solve the problem that the resource scheduling effect of direct communication is poor at the network side.

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

and 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 a direct communication interface, or can 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 buffer statuses of unicast communication and multicast communication of the direct communication interface, or to distinguish buffer statuses 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 Media Access Control Element (MAC CE) of a Media 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:

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 the unicast communication of the direct communication interface;

and a second BSR MAC CE, where an LCID in a MAC subheader corresponding to the second BSR MAC CE is used to indicate that the second BSR MAC CE is a BSR MAC CE for the direct communication interface multicast communication, and the second BSR MAC CE includes a buffer status of a logical channel or a logical 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 included in the logical channel group is carried by the second BSR MAC CE.

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

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 the 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 the direct communication interface multicast communication, and the fourth BSR MAC CE includes a buffer status of a logical channel or a logical channel group corresponding to the direct communication interface multicast communication;

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

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

Optionally, the indication information is carried based on a target identifier or based on a 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 separately for the same logical channel group in the BSR MAC CE, and the indication information is carried separately for each buffer status; or,

if the same logical channel group includes both logical channels using unicast and logical channels using multicast and broadcast, the buffer status of the logical channel corresponding to unicast communication in the logical channel group, the buffer status of the logical channel corresponding to multicast communication in the logical channel group and the buffer status of the logical channel corresponding to broadcast communication in the logical channel group need to be reported separately for the same logical channel group in the BSR MAC CE, and the indication information is carried separately for each buffer status.

Optionally, if the indication information is carried based on a target identifier and the BSR includes multiple identical target identifiers, the indication information only needs to be carried when the target identifier appears for the first time in the BSR MAC CE.

Optionally, the method further includes:

the terminal receives configuration information of a network side, wherein the buffer status of unicast communication and multicast communication of the direct communication interface is distinguished through a logical channel group identifier (LCG ID) in the configuration information, or the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface is distinguished through the LCG ID, so that the buffer status of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCGID in the BSR, or the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface is 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 are unicast communication or multicast communication, or the transmission modes are unicast communication, multicast communication, or broadcast communication; or

The configuration information configures a plurality of logical channel groups corresponding to a same set of Quality of Service (QoS) parameters, and different logical channel groups are used for unicast communication and multicast communication, or different logical channel groups are used for unicast communication, multicast communication and broadcast communication.

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

QoS parameters of logical channels.

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

Optionally, the BSR MAC CE includes the BSR MAC CE.

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

Optionally, the method further includes:

the network side equipment sends configuration information to the terminal, wherein the configuration information distinguishes buffer area states of unicast communication and multicast communication of the direct communication interface through a logical channel group identification (LCG ID), or distinguishes buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID, so 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 distinguishes the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

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

Optionally, the method further includes:

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 logical channels.

An embodiment of the present invention further provides a terminal, including:

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

Optionally, the terminal further includes:

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

An embodiment of the present invention further provides a network side device, including:

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 at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface.

Optionally, the network side device further includes:

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

An embodiment of the present invention further provides a terminal, including: 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 at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses 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 BSRMAC CE for media access control of the buffer status report; or

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 distinguishes buffer status of unicast communication and multicast communication of the direct communication interface through a logical channel group identifier (LCG ID), or distinguishes 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 distinguish buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

An embodiment of the present invention further provides a network side device, including: 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 at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface.

Optionally, the BSR MAC CE includes the BSR MAC CE; or

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 distinguishes buffer status of unicast communication and multicast communication of the direct communication interface through a logical channel group identifier (LCG ID), or distinguishes 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 distinguish buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the method for reporting a BSR on a terminal side provided in the embodiment of the present invention, or the computer program, when executed by the processor, implements the steps in the method for reporting a BSR on a network side device provided in the embodiment of the present invention.

In the embodiment of the present invention, a terminal reports a BSR of a direct communication link, where the BSR is capable of at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses 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 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 according to 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 provided by an embodiment of the present invention;

fig. 5 is a schematic diagram of another BSR MAC CE provided by 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 provided by 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 structural diagram of a terminal according to an embodiment of the present invention;

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

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

fig. 12 is a structural 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 provided in the embodiment of the present invention;

fig. 15 is a block diagram of another terminal provided in 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 of the present invention more apparent, the following detailed description is 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 the embodiment of the present invention is applicable, and as shown in fig. 1, the network structure includes a plurality of terminals 11 and a network side device 12, where the terminal 11 may be a User Equipment (UE) or other terminal devices, for example: a terminal side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), it should be noted that a specific type of the terminal is not limited in the embodiment of the present invention. The link between the terminals 11 that can communicate directly is called a Sidelink (translated into a direct communication link or bypass, also called a direct communication interface), i.e. the terminals can communicate directly via the Sidelink. The terminals of the direct communication can be all on-line or all off-line, or part of the devices are 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, or an Access Point (AP); the base station may also be a network node that is composed of a Central Unit (CU) and a plurality of Transmission Reception Points (TRPs) whose management is 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, and as shown in fig. 2, the method includes the following steps:

201. and 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 a direct communication interface, or can at least distinguish the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface.

The BSR may be a Sidelink (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 multicast communication or broadcast communication, and may be a set of multicast communication and broadcast communication.

The buffer status of the unicast communication may refer to a buffer status of a logical channel or a 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 a buffer status of a logical channel or a 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 multicast communication and the buffer status of broadcast communication may refer to the description of the buffer status of unicast communication and the buffer status of multicast communication, which is not described herein again.

It should be noted that, in the embodiment of the present invention, the cache area state may also be referred to as cache area state information.

Therefore, after receiving the BSR, the network side equipment can distinguish 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 the resource scheduling effect of the network side on the direct communication is improved. For example, when the buffer status of the direct communication link is reported, the buffer statuses corresponding to unicast and multicast services (or unicast, multicast and broadcast services) can be reported independently, so that the network side can perform more accurate scheduling on the unicast.

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

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

In this embodiment, the indication information directly indicates the buffer statuses of different communication methods, so that the network side device can directly and accurately distinguish the buffer statuses of the communication methods of the direct communication interface.

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

Therefore, the buffer area state for distinguishing each communication mode of the direct communication interface can be determined through the MAC subheader.

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

In this way, unicast and multicast differentiation in BSR MAC CEs may be implemented, and specifically, different BSRMAC CEs may be defined to differentiate 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 distinguished more favorably.

When the indication information is LCID, the LCID may be extended, for example: taking an Uplink Shared Channel (UL-SCH) as an example, the value of the UL-SCH LCID (Values of LCID for UL-SCH) can be represented as shown in table 1:

table 1:

the embodiments of the present invention are extended to include at least the contents corresponding to 110001, 110010, 110011, and 110100, but of course, specific values of the LCID are not limited in the embodiments of the present invention, for example: the above-mentioned unicast, multicast/broadcast BSR may also be represented by other values. The LCID may also indicate a BSR of multicast, and the like, which is not limited to this, and the above table is only an example.

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

In this way, unicast, multicast and broadcast differentiation in BSR MAC CEs can be achieved, and specifically, different BSR MAC CEs can be defined to differentiate unicast, multicast and broadcast, for example: multiple BSRMAC CEs are defined for direct communication interface unicast, multicast, and broadcast and distinguished by LCIDs.

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 included in the logical channel group may be carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication included in the logical channel group may be carried by the fifth BSR MAC CE.

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

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

In this implementation manner, unicast and multicast for the direct communication interface may be implemented, or unicast and multicast/broadcast use the same BSR MAC CE, and unicast and multicast are distinguished through the indication information in the BSR MAC CE, or unicast and multicast/broadcast are distinguished. The same BSR MAC CE is used, so that the BSR overhead is reduced.

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

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

And can also realize that whether to unicast or multicast or to unicast, multicast and broadcast can be distinguished by taking 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 target identifier or the communication method based on the logical channel group.

In this embodiment, it can be realized that, for logical channels including different communication manners in the same logical channel group, buffer statuses of the logical channels including different communication manners are respectively reported in the BSR MAC CE, so as to distinguish the buffer statuses of the logical channels including different communication manners in the same logical channel group. For example: when the terminal reports the buffer status, whether the logical channels belong to the same logical channel group are unicast or multicast/broadcast can be further distinguished. Specifically, when the Sidelink BSR MAC CE reports, the Buffer status corresponding to the unicast Logical channel is placed in the Buffer Size (BS) domain corresponding to the unicast indication information, and the Buffer status corresponding to the multicast/broadcast Logical channel is placed in the BS domain corresponding to the multicast indication information, but the Logical channel group identifiers (LCG IDs) of the two are the same.

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

In this embodiment, if the BSR MAC CE includes a plurality of identical target identifiers, only one piece of indication information corresponding to the target identifier needs to be carried, thereby reducing the overhead of the BSR MAC CE.

As an optional implementation, the method further includes:

In this embodiment, when configuring the logical channel and logical channel group mapping relationship, the network side can distinguish between unicast communication and multicast communication, or between unicast communication, multicast communication, and broadcast communication, or between unicast and multicast/broadcast.

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

Optionally, in this embodiment, 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 are unicast communication or multicast communication, or the transmission modes are unicast communication, multicast communication, or broadcast communication.

Therefore, the communication modes in the same logical channel group are the same during configuration, and the communication modes of the logical channels are directly distinguished through the LCGID. For example: if the mapping relationship between the logical channel of the direct communication interface and the logical channel group is directly configured by the network, it is necessary to ensure unicast and multicast during network configuration, or that the logical channels of unicast and multicast/broadcast cannot be mapped into the same logical channel group.

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

In this embodiment, it may be implemented that a plurality of logical channel groups are configured for the same set of QoS parameters, where different logical channel groups are used for unicast communication and multicast communication, or different logical channel groups are used for unicast communication, multicast communication and broadcast communication, so as to directly distinguish the communication modes of the logical channels by the LCG IDs. For example: if the network side only configures the mapping relationship between the QoS parameters and the logical channel groups, it is necessary to ensure that the same set of QoS parameters needs to correspond to two logical channel group identifiers when the network side configures, where one corresponds to unicast and 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 identifiers, where one corresponds to unicast, another corresponds to multicast, and another corresponds to broadcast.

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

QoS parameters of logical channels.

In this embodiment, since the terminal reports the auxiliary information, the network side device may perform configuration in combination with or according to the auxiliary information when configuring the configuration information, so as to improve the accuracy and the configuration efficiency of the configuration information. Of course, in the embodiment of the present invention, the auxiliary information does not limit the terminal reporting, for example: the network side device may also be configured in advance, or defined in a protocol in advance, and the like, which is not limited herein.

It should be noted that, in the embodiment of the present invention, the present invention may be applied to a V2X communication system, and may also be applied to other systems that require direct communication, such as a New Radio (NR) communication system, and the following illustrates various embodiments provided above by using an NR system:

example 1: differentiation by LCID

In this embodiment, the terminal determines whether the sildelink BSR is triggered based on the triggering condition of the sildelink BSR MAC CE, and once the sildelink BSR is triggered, the terminal needs to organize the sildelink BSR MAC CE.

When a terminal reports the buffer status, whether unicast or multicast/broadcast (or unicast or multicast) needs to be further distinguished for a plurality of logical channels belonging to the same logical channel group, and the logical channels are reported through corresponding Sidelink BSR MAC CEs respectively.

Based on the above method, assume:

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

LCG ID: a logical channel group identity, assuming to occupy 2 bits;

buffer Size (Buffer Size): the buffer status size corresponding to the logical channel group assumes 6 bits are occupied.

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

To distinguish between unicast and multicast/broadcast (or between unicast and multicast) when a direct communication link buffer status report is made, 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 UL-SCH of NR system. Considering the existence of the truncated Sidelink BSR MAC CE, unicast and multicast/broadcast may occupy 2 LCIDs respectively, which may specifically refer to table 1 and the corresponding description of table 1, which is not described herein again.

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

The terminal judges whether the Sidelink BSR is triggered or not based on the triggering condition of the Sidelink BSR MAC CE, and once the Sidelink BSR is triggered, the terminal needs to organize the 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 the BSR MAC CE to distinguish between unicast and multicast/broadcast (or to distinguish between unicast and multicast). More specifically, whether unicast or multicast/broadcast (or unicast or multicast) is distinguished by the granularity of the target identifier, that is, whether the logical channel corresponding to each logical channel group reported under the destination address is unicast or multicast/broadcast (or unicast or multicast) is indicated based on the destination address.

Based on the above method, assume:

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

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

LCG ID: logical channel group identification, assuming to occupy 3 bits;

buffer Size (Buffer Size): the buffer status size corresponding to the logical channel group assumes 8 bits are occupied.

The sildelink BSR MAC CE format diagram may be as shown in fig. 5, or as shown in fig. 6.

It should be noted that if the target id is differentiated into unicast or multicast/broadcast (or differentiated into unicast or multicast), the T field corresponding to one target id may only appear once in the Sidelink BSR MAC CE. If this optimization is supported, then it is appropriate to use a second graph. For example: for one Destination index in the Sidelink BSR MAC CE, if Buffer size information of different LCG IDs is to be reported, the Destination index + LCG ID + Buffer size needs to be reported once for each LCG ID; if unicast or multicast is distinguished based on the Destination index, although the same Destination index in the BSRMAC CE may appear multiple times (report Buffer size of different Destination indexes under the LCG), as optimization, the T field may be carried only before the first LCG ID in the Destination index, and no T indication is carried when other LCG IDs report Buffer size. In this case, FIG. 6 is better because FIG. 6 reads the Destination index first, and it can determine whether the T field is carried later according to the number of occurrences of the Destination index in the BSR MAC CE.

Example 3: carrying the indication information based on logical channel groups

When the terminal reports the buffer status, it is necessary to further distinguish whether to be unicast or multicast/broadcast (or to distinguish unicast or multicast) for multiple logical channels belonging to the same logical channel group. When the Sidelink BSR MAC CE reports, the buffer status information corresponding to the unicast logical channel is put into the BS domain corresponding to the unicast indication information, and the buffer status information corresponding to the multicast/broadcast logical channel is put into the BS domain corresponding to the unicast indication information, but the LCG IDs of the two 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 the BSR MAC CE to distinguish between unicast and multicast/broadcast (or to distinguish between unicast and multicast). More specifically, whether unicast or multicast/broadcast (or unicast or multicast) is distinguished by using the logical channel group as a granularity, that is, whether buffer status report corresponding to the logical channel group is for unicast or multicast/broadcast (or unicast or multicast) is indicated based on the logical channel group.

Based on the above method, assume:

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

LCG ID: logical channel group identification, assuming to occupy 3 bits;

A schematic diagram of the sildelink BSR MAC CE format may be as shown in fig. 7.

Example 4: 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

The terminal judges whether the Sidelink BSR is triggered or not based on the triggering condition of the Sidelink BSR MAC CE, and once the Sidelink BSR is triggered, the terminal needs to organize the Sidelink BSR MAC CE. In order to ensure that when a terminal organizes a SidelinkBSR MAC CE, unicast and multicast/broadcast (or unicast and multicast) logical channels need to be mapped to different logical channel groups, the following method needs to be considered:

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

In order to better ensure that unicast and multicast/broadcast (or unicast and multicast) logical channels cannot be mapped to the same logical channel group when the network is configured, the terminal may report the auxiliary information, where the auxiliary information content at least includes the following content:

the method comprises the steps that a Sidelink logical channel identifier and whether the logical channel corresponds to a unicast or a multicast/broadcast;

QoS parameters corresponding to the Sidelink logical channel.

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

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

When the terminal organizes the Sidelink BSR mac ce based on the QoS parameters configured by the network side and the logical channel group mapping relationship, the terminal may further group the multiple logical channels with the same target identifier and QoS parameters according to whether the corresponding service is unicast or multicast (or unicast or multicast), and place the logical channel corresponding to the unicast into the unicast logical channel group corresponding to the QoS parameters; and the buffer state of the logical channel corresponding to the multicast/broadcast is put into the multicast/broadcast logical channel group 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, and as shown in fig. 8, the method includes the following steps:

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

Optionally, the BSR MAC CE includes the BSR MAC CE.

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

Optionally, the method further includes:

QoS parameters of logical channels.

It should be noted that, this embodiment is used as an implementation of the network side device corresponding to the embodiment shown in fig. 2, and specific implementation thereof may refer to the relevant 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 also be achieved.

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

a first reporting module 901, configured to report a BSR of a direct communication link, where the BSR is capable of at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses 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 BSRMAC CE for media 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:

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

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

a receiving module 902, configured to receive configuration information of a network side, where the configuration information distinguishes buffer statuses of unicast communication and multicast communication of the direct communication interface through a logical channel group identifier LCG ID, or distinguishes buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface through the LCG ID, so as to ensure that the buffer statuses of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID in the BSR, or distinguish buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface through the LCG ID.

And configuring a plurality of logical channel groups corresponding to the same set of QoS parameters in the configuration information, wherein different logical channel groups are used for unicast communication and multicast communication, or different logical channel groups are used for unicast communication, multicast communication and broadcast communication.

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

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

QoS parameters of logical channels.

It should be noted that, in this embodiment, the terminal 900 may be any implementation manner of the method embodiment in the present invention, and any implementation manner of the terminal in the method embodiment in the present invention may be implemented by the terminal 900 in this embodiment, and achieve the same beneficial effects, and details are not described here again.

Referring to fig. 12, fig. 12 is a structural 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:

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

Optionally, the BSR MAC CE includes the BSR MAC CE.

Optionally, the indication information is included in the 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 distinguishes, through a logical channel group identifier LCG ID, buffer statuses of unicast communication and multicast communication of the direct communication interface, or distinguishes, through the LCG ID, buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface, so as to ensure that, in the BSR, buffer statuses of unicast communication and multicast communication of the direct communication interface can be distinguished through the LCG ID, or distinguish, through the LCG ID, buffer statuses 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:

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

QoS parameters of logical channels.

It should be noted that, in this embodiment, the network-side device 1200 may be a terminal 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 1200 in this embodiment, and the same beneficial effects are achieved, and details are not described here.

Referring to fig. 15, fig. 15 is a structural diagram of another terminal according to an embodiment of the present invention, and 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 1200, 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 at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface.

The transceiver 1510, among other things, may be used to receive and transmit data under the control of the processor 1500.

In fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 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 1510 may be a number of elements including a transmitter and a receiver that provide 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 being on a terminal, and the memory 1520 and the processor 1500 may be separated in different geographical locations.

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

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

It should be noted that, in this embodiment, the terminal may be a terminal in any implementation manner in the method embodiment of the present invention, and any implementation manner of the terminal in the method embodiment of the present invention may be implemented by the terminal in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 16, fig. 16 is a structural diagram of another network-side device according to an embodiment of the present invention, and as shown in fig. 16, 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 at least distinguishing buffer statuses of unicast communication and multicast communication of a direct communication interface, or at least distinguishing buffer statuses of unicast communication, multicast communication, and broadcast communication of the direct communication interface.

The transceiver 1610 may be used for receiving and transmitting data under the control of the processor 1600, among other things.

In fig. 16, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, in particular one or more processors, represented by the processor 1600, and memory, represented by the memory 1620. 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 1610 can be a number of elements including a transmitter and a receiver that provide 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 be on a network side device, and the memory 1620 and the processor 1600 may be separated in different geographical locations.

Optionally, the BSR MAC CE includes the BSR MAC CE.

Optionally, the indication information is included in the 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 logical channels.

It should be noted that, in this embodiment, the network-side device may be a network-side device in 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 this embodiment, so as to achieve the same beneficial effects, and details are not described here.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored thereon, and is characterized in that when executed by a processor, the program implements the steps in the method for reporting a BSR on a terminal side according to the embodiment of the present invention, or when executed by a processor, the program implements the steps in the method for reporting a BSR on a network-side device according to the embodiment of the present invention.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the processing method of the information data block according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

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

2. The method of claim 1, wherein indication information is included in the BSR, the indication information being used to distinguish buffer states of unicast and multicast communications of the direct communication interface, or to distinguish buffer states of unicast, multicast and broadcast communications of the direct communication interface.

3. The method of claim 2, wherein the indication information is included in a MAC subheader corresponding to a control element BSR MAC CE for medium access control of buffer status reporting.

4. The method of claim 3, wherein the indication information is a Logical Channel Identity (LCID), and wherein the BSR includes at least one of:

and a second BSR MAC CE, where an LCID in a MAC subheader corresponding to the second BSR MAC CE is used to indicate that the second BSR MAC CE is a BSR MAC CE for the multicast communication of the direct communication interface, and the second 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.

5. The method of claim 4, wherein for a logical channel group, the buffer status of the logical channel corresponding to the 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 included in the logical channel group is carried by the second BSR MAC CE.

6. The method of claim 3, wherein the indication information is an LCID, and wherein the BSR includes at least one of:

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

7. The method of claim 6, wherein for a logical channel group, the buffer status of the logical channel corresponding to the unicast communication included in the logical channel group is carried by the third BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication included in the logical channel group is carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication included in the logical channel group is carried by the fifth BSR MAC CE.

8. The method of claim 2, wherein the indication information is included in a BSR MAC CE.

9. The method of claim 8, wherein the indication information is carried based on a target identity or based on a logical channel group.

10. The method according to claim 9, wherein if a same logical channel group includes both logical channels corresponding to unicast communication and logical channels corresponding to multicast communication, then in the BSR MAC CE, for the same logical channel group, buffer statuses of the logical channels corresponding to unicast communication in the logical channel group and buffer statuses of the logical channels corresponding to multicast communication in the logical channel group need to be reported, and the indication information is carried for each buffer status; or,

11. The method of claim 9, wherein if the indication information is carried based on a target identity and the BSR includes multiple identical target identities, the indication information only needs to be carried when the target identity first appears in the BSR MAC CE.

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

the terminal receives configuration information of a network side, wherein the buffer status of unicast communication and multicast communication of the direct communication interface is distinguished through a logical channel group identifier (LCG ID) in the configuration information, or the buffer status of unicast communication, multicast communication and broadcast communication of the direct communication interface is distinguished through the LCG ID, so 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 is distinguished through the LCG ID.

13. The method according to claim 12, wherein logical channels in a same logical channel group in the logical channel group corresponding to the BSR are transmitted in a same manner, where the transmission manner is unicast communication or multicast communication, or the transmission manner is unicast communication, multicast communication, or broadcast communication; or

14. The method of claim 13, wherein prior to the terminal reporting the BSR of the direct communication link, the method further comprises:

QoS parameters of logical channels.

15. A BSR reporting method, comprising:

16. The method of claim 15, wherein indication information is included in the BSR, the indication information being used to distinguish buffer states of unicast and multicast communications of the direct communication interface, or to distinguish buffer states of unicast, multicast and broadcast communications of the direct communication interface.

17. The method of claim 16, contained in a MAC subheader corresponding to a BSR MAC CE.

18. The method of claim 17, wherein the indication information is an LCID, and wherein the BSR includes at least one of:

19. The method of claim 18, wherein for a logical channel group, the buffer status of the logical channel corresponding to the 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 included in the logical channel group is carried by the second BSR MAC CE.

20. The method of claim 17, wherein the indication information is an LCID, and wherein the BSR includes at least one of:

21. The method according to claim 20, wherein for a logical channel group, the buffer status of the logical channel corresponding to the unicast communication included in the logical channel group is carried by the third BSR MAC CE; the buffer status of the logical channel corresponding to the multicast communication included in the logical channel group is carried by the fourth BSR MAC CE; the buffer status of the logical channel corresponding to the broadcast communication included in the logical channel group is carried by the fifth BSR MAC CE.

22. The method of claim 16, wherein the indication information is included in a BSR MAC CE.

23. The method of claim 22, wherein the indication information is carried based on a target identity or based on a logical channel group.

24. The method according to claim 23, wherein if a same logical channel group includes both logical channels corresponding to unicast communication and logical channels corresponding to multicast communication, then in the BSR MAC CE, for the same logical channel group, buffer statuses of the logical channels corresponding to unicast communication in the logical channel group and buffer statuses of the logical channels corresponding to multicast communication in the logical channel group need to be reported, and the indication information is carried for each buffer status; or,

25. The method of claim 23, wherein if the indication information is carried based on a target identity and the BSR includes multiple identical target identities, the indication information only needs to be carried when the target identity first appears in the BSR MAC CE.

26. The method of claim 15, wherein the method further comprises:

the network side equipment sends configuration information to the terminal, wherein the configuration information distinguishes buffer area states of unicast communication and multicast communication of the direct communication interface through a Logical Channel Group Identifier (LCGID), or distinguishes buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through an LCG ID, so 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 distinguishes the buffer area states of unicast communication, multicast communication and broadcast communication of the direct communication interface through the LCG ID.

27. The method of claim 26, wherein logical channels in a same logical channel group in the logical channel group corresponding to the BSR are transmitted in a same manner, where the transmission manner is unicast communication or multicast communication, or the transmission manner is unicast communication, multicast communication, or broadcast communication; or

28. The method of claim 27, wherein the method further comprises:

QoS parameters of logical channels.

29. A terminal, comprising:

30. The terminal of claim 29, wherein indication information is included in the BSR, the indication information being used to distinguish buffer states of unicast communication and multicast communication of the direct communication interface, or to distinguish buffer states of unicast communication, multicast communication and broadcast communication of the direct communication interface.

31. The terminal of claim 29, wherein the terminal further comprises:

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

32. A network-side device, comprising:

33. The network-side device of claim 32, wherein indication information is included in the BSR, and the indication information is used to distinguish buffer statuses of unicast communication and multicast communication of the direct communication interface, or to distinguish buffer statuses of unicast communication, multicast communication and broadcast communication of the direct communication interface.

34. The network-side device of claim 32, wherein the network-side device further comprises:

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

35. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

36. The terminal of claim 35, wherein indication information is included in the BSR, the indication information being used to distinguish buffer states of unicast communication and multicast communication of the direct communication interface, or to distinguish buffer states of unicast communication, multicast communication and broadcast communication of the direct communication interface.

37. The terminal of claim 36, wherein the indication information is included in a MAC subheader corresponding to a control element BSR MAC CE for medium access control of the buffer status report; or

The indication information is contained in the BSR MAC CE.

38. The terminal of claim 35, wherein the transceiver is further configured to:

39. The terminal of claim 38, wherein logical channels in a same logical channel group in the logical channel group corresponding to the BSR are transmitted in a same manner, where the transmission manner is unicast communication or multicast communication, or the transmission manner is unicast communication, multicast communication, or broadcast communication; or

40. A network-side device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor,

41. The network-side device of claim 40, wherein indication information is included in the BSR, and wherein the indication information is used to distinguish buffer statuses of unicast communication and multicast communication of the direct communication interface, or to distinguish buffer statuses of unicast communication, multicast communication and broadcast communication of the direct communication interface.

42. The network-side device of claim 41, wherein the BSR MAC CE is included in a MAC subheader corresponding to the BSR MAC CE; or

The indication information is contained in the BSR MAC CE.

43. The network-side device of claim 40, wherein the transceiver is further configured to:

44. The network-side device of claim 43, wherein logical channels in a same logical channel group in the logical channel group corresponding to the BSR have a same transmission mode, where the transmission mode is unicast communication or multicast communication, or the transmission mode is unicast communication, multicast communication, or broadcast communication; or

45. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, realizes the steps in the BSR reporting method according to one of the claims 1 to 14, or the program, when being executed by a processor, realizes the steps in the BSR reporting method according to one of the claims 15 to 28.