CN110113781B

CN110113781B - Method for reporting buffer status report, method for allocating resources, terminal and network equipment

Info

Publication number: CN110113781B
Application number: CN201810102180.2A
Authority: CN
Inventors: 赵亚利
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2022-05-31
Anticipated expiration: 2038-02-01
Also published as: CN110113781A

Abstract

The invention provides a method for reporting a buffer status report and allocating resources, a terminal and a network device, wherein the method comprises the following steps: sending a buffer status report to a network device and indicating the type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal; the relay terminal of the embodiment of the invention indicates the type of the buffer status report to the network equipment when sending the buffer status report to the network equipment, so that the network equipment can identify whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal, and the network equipment can reasonably allocate the resources of Sidelink to the remote terminal and/or the relay terminal.

Description

Method for reporting buffer status report, method for allocating resources, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for reporting a buffer status report, a method for allocating resources, a terminal, and a network device.

Background

The D2D (Device-to-Device) technology, i.e., a terminal-through technology, refers to a way in which a neighboring terminal can perform data transmission through a direct link in a short distance, and does not need to forward through a central node (i.e., a base station) or perform information transmission between terminals through a conventional cellular link.

In the future development of mobile Communication systems, in order to better meet user requirements, a D2D Discovery (Device to Device Discovery) mechanism and a D2D Communication (Device to Device Communication) mechanism are introduced. As shown in fig. 1, for a off-line terminal UE2 (also called a remote terminal), in order to enable communication with the Network, a neighboring on-line terminal UE1 is selected as a Relay for the off-line terminal, and the on-line terminal is called a Relay terminal, and this communication mode is called a terminal-to-Network Relay (UE-to-Network Relay).

For the terminal-to-network Relay communication mode, a Remote terminal (Remote UE) may request a resource of its Sidelink (Sidelink refers to a direct communication link between terminals, also referred to as a D2D link) through a Relay terminal (Relay UE), and meanwhile, if the Relay terminal itself may also have Sidelink data transmission, how to enable a network to control the Sidelink used by the Remote terminal and the Relay terminal respectively is a problem that needs to be solved at present.

Disclosure of Invention

The invention aims to provide a method for reporting a buffer status report, a method for allocating resources, a terminal and a network device, and aims to solve the problem that a network in the prior art cannot respectively control the Silelink resources used by a remote terminal and a relay terminal.

In order to solve the above problem, an embodiment of the present invention provides a method for reporting a buffer status report, which is applied to a relay terminal, and includes:

sending a buffer status report to a network device and indicating the type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal.

Wherein the sending the buffer status report to the network device comprises:

when a first buffer status report triggering condition is met, sending a first buffer status report to the network equipment; and/or the presence of a gas in the gas,

and when a second buffer status report triggering condition is met, sending the second buffer status report to the network equipment.

Wherein the sending the buffer status report to the network device comprises:

and when the triggering condition of a first buffer status report is met or the triggering condition of a second buffer status report is met, sending the first buffer status report and the second buffer status report to the network equipment through a buffer status report media access control layer control element (MAC CE).

Wherein the first buffer status report triggering condition comprises: the relay terminal receives a first buffer status report of the remote terminal.

Wherein the sending a buffer status report to a network device and indicating the type of the buffer status report includes:

sending a buffer status report to a network device, wherein the buffer status report is accessed to a control unit MAC CE of a media access control layer; and the buffer status report MAC CE carries the buffer status report and the type identification information of the buffer status report.

Wherein the type identification information of the buffer status report includes: identification information of the relay terminal and/or identification information of the remote terminal;

when the type identification information of the buffer status report includes identification information of a remote terminal, the identification information of the remote terminal is a terminal number allocated to the remote terminal by a high layer, or the identification information of the remote terminal is a terminal number of the remote terminal under the relay terminal.

sending a buffer status report to the network device through the first type of logical channel group; the first type of logical channel group is used for indicating the type of the buffer status report as a first buffer status report of a remote terminal; and/or the presence of a gas in the gas,

sending a buffer status report to the network equipment through the second type of logical channel group; the second type of logical channel group is used for indicating that the type of the buffer area status report is a second buffer area status report of the relay terminal;

the first type of logical channel group comprises at least one logical channel group, and the second type of logical channel comprises at least one logical channel group; the logical channel group contained in the first type logical channel group is different from the logical channel group contained in the second type logical channel group.

transmitting a buffer status report to the network device on the first physical resource; the first physical resource is used for indicating the type of the buffer status report as a first buffer status report of a remote terminal; and/or the presence of a gas in the gas,

sending a buffer status report to the network device on the second physical resource; the second physical resource is used for indicating the type of the buffer status report to be a second buffer status report of the relay terminal;

wherein the first physical resource is different from the second physical resource.

Wherein the method further comprises:

sending a buffer status report MAC CE sub-header to network equipment, wherein the buffer status report MAC CE sub-header comprises an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

Wherein the buffer status report MAC CE further carries a MAC CE length indication field, and the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

Wherein after the step of sending a buffer status report to a network device and indicating the type of the buffer status report, the method further comprises:

receiving resource allocation information of a target terminal sent by the network equipment; the target terminal includes: the remote terminal and/or the relay terminal;

under the condition of receiving the resource allocation information of the remote terminal, sending the resource allocation information of the remote terminal to the remote terminal;

and under the condition of receiving the resource allocation information of the relay terminal, determining the resources of the direct communication link sidelink between the terminals allocated to the relay terminal by the network equipment according to the resource allocation information of the relay terminal.

Wherein the resource allocation information of the target terminal includes: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

Wherein, the target identification of the target terminal comprises:

identification information of the target terminal; alternatively, the first and second electrodes may be,

and carrying the identification information of the logical channel group of the buffer status report of the target terminal.

When the relay terminal respectively sends the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identifier of the target terminal further includes:

and carrying the identification information of the physical resources of the buffer status report of the target terminal.

When the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal;

the identification information of the remote terminal is a terminal number allocated to the remote terminal by a high layer, or the identification information of the remote terminal is a terminal number of the remote terminal under the relay terminal.

The embodiment of the invention also provides a resource allocation method, which is applied to network equipment and comprises the following steps:

receiving a buffer area status report sent by a relay terminal, and determining the type of the buffer area status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

according to the buffer area status report, distributing the resources of the direct communication link sidelink between the terminals for the target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

and transmitting the resource allocation information of the target terminal to the relay terminal.

Wherein, the target identification of the target terminal comprises:

Wherein, the receiving a buffer status report sent by a relay terminal and determining the type of the buffer status report includes:

receiving a buffer area state report media access control layer control unit (MAC CE) sent by a relay terminal; and the buffer status report MAC CE carries the buffer status report and the type identification information of the buffer status report.

receiving a buffer area state report sent by a relay terminal through a first type of logic channel group, and determining the type of the buffer area state report as a first buffer area state report of a remote terminal according to the first type of logic channel group; and/or the presence of a gas in the gas,

receiving a buffer area state report sent by the relay terminal through a second type of logic channel group, and determining the type of the buffer area state report as a second buffer area state report of the relay terminal according to the second type of logic channel group;

receiving a buffer status report sent by a relay terminal on a first physical resource, and determining the type of the buffer status report as a first buffer status report of a remote terminal according to the first physical resource; and/or the presence of a gas in the gas,

receiving a buffer status report sent by a relay terminal on a second physical resource, and determining the type of the buffer status report as a second buffer status report of the relay terminal according to the second physical resource;

Wherein, when the network device receives the first buffer status report and the second buffer status report through a buffer status report media access control layer control element MAC CE, the method further comprises:

receiving a buffer status report MAC CE sub-header sent by a relay terminal, wherein the buffer status report MAC CE sub-header comprises an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

When the network device receives the first buffer status report and the second buffer status report through a buffer status report media access control layer control element MAC CE, the buffer status report MAC CE further carries a MAC CE length indication field, where the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

An embodiment of the present invention further provides a relay terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the transceiver to:

Wherein the transceiver is further configured to:

Wherein, the buffer status report MAC CE subheader comprises a MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

Wherein the transceiver is further configured to:

the processor is configured to: and under the condition of receiving the resource allocation information of the relay terminal, determining the resources of the direct communication link sidelink between the terminals allocated to the relay terminal by the network equipment according to the resource allocation information of the relay terminal.

Wherein, the target identification of the target terminal comprises:

When the target terminal is a far-end terminal, the identification information of the target terminal is the identification information of the far-end terminal;

The embodiment of the present invention further provides a device for reporting a buffer status report, which is applied to a relay terminal, and includes:

a sending module, configured to send a buffer status report to a network device, and indicate a type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for reporting a buffer status report as claimed in the claims are implemented.

An embodiment of the present invention further provides a network device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the transceiver to:

the processor is used for reading the program in the memory and executing the following processes: according to the buffer area status report, distributing the resources of the direct communication link sidelink between the terminals for the target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

the transceiver is further configured to: and transmitting the resource allocation information of the target terminal to the relay terminal.

Wherein, the target identification of the target terminal comprises:

Wherein the transceiver is further configured to:

receiving a buffer area state report media access control layer control unit (MAC CE) sent by a relay terminal; the buffer status report MAC CE carries the buffer status report and the type identifier information of the buffer status report.

Wherein the transceiver is further configured to:

receiving a buffer area state report sent by a relay terminal on a second physical resource, and determining the type of the buffer area state report as the second buffer area state report of the relay terminal according to the second physical resource;

Wherein, when the network device receives the first buffer status report and the second buffer status report through a buffer status report media access control layer control element MAC CE, the transceiver is further configured to:

The embodiment of the present invention further provides a resource allocation apparatus, which is applied to a network device, and includes:

the receiving module is used for receiving a buffer area status report sent by the relay terminal and determining the type of the buffer area status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

a resource determining module, configured to allocate, according to the buffer status report, a resource of a sidelink for direct communication between terminals, where the resource is allocated to a target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

and the allocation sending module is used for sending the resource allocation information of the target terminal to the relay terminal.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the resource allocation method described above are implemented.

The technical scheme of the invention at least has the following beneficial effects:

in the method for reporting a buffer status report and allocating resources, the terminal and the network device of the embodiment of the invention, the relay terminal indicates the type of the buffer status report to the network device when sending the buffer status report to the network device, so that the network device can identify whether the buffer status report is a first buffer status report of a remote terminal or a second buffer status report of the relay terminal, and the network device can perform reasonable sildelink resource allocation for the remote terminal and/or the relay terminal.

Drawings

Fig. 1 shows a communication schematic of a terminal to network relay;

fig. 2 is a flowchart illustrating a method for reporting a buffer status report according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating steps of a resource allocation method according to an embodiment of the present invention;

FIG. 4 is an interaction diagram of example one provided by an embodiment of the invention;

fig. 5 is a schematic structural diagram of a buffer status report MAC CE of a remote terminal in example one and example two according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram illustrating a buffer status report MAC CE of a relay terminal in a first embodiment of the present invention;

FIG. 7 is an interaction diagram of example two provided by an embodiment of the invention;

fig. 8 is a schematic structural diagram illustrating a buffer status report MAC CE of a relay terminal in a second embodiment of the present invention;

fig. 9 is a schematic structural diagram of a relay terminal and a network device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a reporting apparatus for a buffer status report according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a resource allocation apparatus 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.

As shown in fig. 2, an embodiment of the present invention provides a method for reporting a buffer status report, which is applied to a relay terminal, and includes:

step 21, sending a buffer status report BSR to a network device, and indicating the type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal.

In the above embodiments of the present invention, the relay terminal sends the buffer status report to the network device through the buffer status report medium access control element BSR MAC CE.

Preferably, the embodiment of the present invention provides two methods for reporting BSR:

the first reporting mode is as follows: and the relay terminal respectively triggers and reports the Buffer Status Report (BSR) of the remote terminal and/or the relay terminal.

The second reporting mode is as follows: the relay terminal triggers and reports the buffer status report BSR of the remote terminal and the relay terminal at the same time.

Specifically, when the relay terminal reports the BSR in the first reporting mode, step 21 includes:

Wherein the first buffer status report trigger condition includes: the relay terminal receives a first buffer status report of the remote terminal. The second buffer status report triggering condition is an existing BSR triggering condition, for example, at least one of a regular BSR triggering condition, a periodic BSR triggering condition and a piggyback BSR triggering condition, which will not be described in detail herein.

Preferably, when a first buffer status report triggering condition is met, the first buffer status report is sent to the network device through one BSR MAC CE; and/or when a second buffer status report triggering condition is met, sending the second buffer status report to the network equipment through one BSR MAC CE.

Specifically, in the case that the relay terminal reports the BSR in the second reporting mode, step 21 includes:

Preferably, the embodiment of the present invention further provides various indication manners of the types of the buffer status reports. On one hand, no matter the relay terminal adopts the first reporting mode to report the BSR or adopts the second reporting mode to report the BSR, the applicable indication modes include:

the first way of indicating (i.e. step 21 includes): sending a buffer status report to a network device, wherein the buffer status report is accessed to a control unit MAC CE of a media access control layer; and the buffer status report MAC CE carries the buffer status report and the type identification information of the buffer status report.

Preferably, the type identification information of the buffer status report includes: identification information of the relay terminal (source ID of the relay terminal) and/or identification information of the remote terminal (source ID of the remote terminal);

The second way of indicating (i.e. step 21 includes):

In short, the first buffer status report of the remote terminal and the second buffer status report of the relay terminal are reported by using different logical channel groups. The network device and the relay terminal may determine the type of the buffer status report corresponding to the logical channel group through the identifier of the logical channel group. For example, an individual logical channel group is defined for a plurality of remote terminals, and is used for reporting a first buffer status report of the remote terminal; and defining an independent logic channel group for the plurality of relay terminals, wherein the logic channel group is used for reporting the second buffer area state report of the relay terminals.

On the other hand, when the relay terminal reports the BSR in the first reporting mode, the indication mode of the type of the buffer status report includes:

the third indication (i.e., step 21 includes):

transmitting a buffer status report to the network device on the first physical resource; the first physical resource is used for indicating the type of the buffer status report as a first buffer status report of a remote terminal; and/or the presence of a gas in the atmosphere,

In short, the first buffer status report of the remote terminal and the second buffer status report of the relay terminal are reported by using different physical resources, and the physical resources are configured by a network or agreed by a protocol. Since the relay terminal reports the first BSR and the second BSR simultaneously when reporting the BSR in the second reporting mode, the first BSR and the second BSR use the same physical resource, and thus the third indication method cannot be applied to the second reporting mode of the BSR.

Preferably, in the foregoing embodiment of the present invention, when the relay terminal performs BSR reporting in the second reporting manner, the number of the remote terminals may be variable when BSR MAC CE is reported, so that a MAC CE length indication field (also referred to as an L domain) is introduced into a MAC CE header corresponding to the BSR MAC CE, or a MAC CE length indication field (also referred to as an L domain) is directly introduced into the BSR MAC CE; the MAC CE length indication field is used to indicate the length of the BSR MAC CE. The specific indication mode may be indicated by bitmap or directly indicated, and is not limited specifically herein.

Specifically, the method further comprises:

sending a buffer status report MAC CE sub-header to network equipment, wherein the buffer status report MAC CE sub-header comprises an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE. Or, the buffer status report MAC CE further carries a MAC CE length indication field, where the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

In the above embodiment of the present invention, after step 21, the method further includes:

step 22, receiving resource allocation information of a target terminal sent by the network equipment; the target terminal includes: the remote terminal and/or the relay terminal;

step 23, sending the resource allocation information of the remote terminal to the remote terminal under the condition of receiving the resource allocation information of the remote terminal;

and 24, under the condition that the resource allocation information of the relay terminal is received, determining the resources of the direct communication link sidelink between the terminals allocated to the relay terminal by the network equipment according to the resource allocation information of the relay terminal.

Preferably, the resource allocation information of the target terminal includes: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

When the relay terminal indicates the type of the buffer status report by using the first indication manner, the target identifier of the target terminal includes: identification information of the target terminal; alternatively, the first and second electrodes may be,

when the relay terminal indicates the type of the buffer status report in the second manner, the target identifier of the target terminal includes: and carrying the identification information of the logical channel group LCG of the buffer area state report of the target terminal.

Further, when the relay terminal respectively sends the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, that is, when the relay terminal indicates the type of the buffer status report by using a third manner, the target identifier of the target terminal further includes:

Preferably, when the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal; and the identification information of the far-end terminal is a terminal number which is allocated to the far-end terminal by a high layer, or the identification information of the far-end terminal is a terminal number of the far-end terminal under the relay terminal.

In summary, in the method for reporting a buffer status report provided in the foregoing embodiment of the present invention, when the relay terminal sends the buffer status report to the network device, the relay terminal indicates the type of the buffer status report to the network device, so that the network device can identify whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal, and thus the network device can perform reasonable sildelink resource allocation for the remote terminal and/or the relay terminal.

As shown in fig. 3, an embodiment of the present invention further provides a resource allocation method, applied to a network device, including:

step 31, receiving a buffer status report sent by a relay terminal, and determining the type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

step 32, according to the buffer status report, allocating the resources of the direct communication link sidelink between the terminals to the target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

step 33, the resource allocation information of the target terminal is transmitted to the relay terminal.

Further, when the relay terminal respectively sends the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, that is, when the relay terminal indicates the type of the buffer status report in the third manner, the target identifier of the target terminal further includes:

and carrying the identification information of the physical resource of the buffer status report of the target terminal.

In another embodiment of the present invention, since the relay terminal indicates the type of the buffer status report through different indication manners, the manner in which the corresponding network device receives the buffer status report is also different. Specifically, step 31 includes:

Alternatively, step 31 comprises:

wherein, the first type of logical channel group comprises at least one logical channel group, and the second type of logical channel comprises at least one logical channel group; the logical channel group contained in the first type logical channel group is different from the logical channel group contained in the second type logical channel group.

Alternatively, step 31 comprises:

In short, the first buffer status report of the remote terminal and the second buffer status report of the relay terminal are reported using different physical resources, and the physical resources are configured by the network or agreed by the protocol. The network device and the relay terminal may determine the type of the buffer status report corresponding to the logical channel group through the identification of the physical resource.

Preferably, in the above embodiment of the present invention, when the network device receives the first buffer status report and the second buffer status report through a buffer status report medium access control element MAC CE, the number of remote terminals may be variable when the BSR MAC CE reports, so that the method further includes:

receiving a buffer status report MAC CE sub-header sent by a relay terminal, wherein the buffer status report MAC CE sub-header comprises an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE. Or the buffer status report MAC CE further carries a MAC CE length indication field, where the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE. The specific indication mode may be indicated by bitmap or directly indicated, and is not limited in this respect.

In summary, in the method for reporting a buffer status report provided in the foregoing embodiment of the present invention, when the relay terminal sends the buffer status report to the network device, the relay terminal indicates the type of the buffer status report to the network device, so that the network device can identify whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal, and thus, the network device can perform reasonable sildelink resource allocation for the remote terminal and/or the relay terminal.

In order to describe the reporting method and the resource allocation method of the buffer status report more clearly, the following specifically describes the interaction between the terminal and the network device by combining two examples.

Example one

It is assumed that the first buffer status report of the remote terminal and the second buffer status report of the relay terminal are triggered and reported at the relay terminal, respectively. As shown in fig. 4, the interaction between the terminal and the network device includes the following steps:

step 1, the remote terminal reports a first buffer status report of the remote terminal to the relay terminal. The first buffer status report is for a D2D link (also known as Sidelink).

Preferably, the remote terminal reports the first buffer status report to the relay terminal through the buffer status report BSR MAC CE. The BSR MAC CE of the remote terminal needs to include a target ID (destination ID), each logical channel group ID corresponding to each target ID, and buffer status information corresponding to each logical channel group ID.

Assuming that one target ID has only one logical channel group ID, the format of the BSR MAC CE of the remote terminal is shown in fig. 5, where a Destination index (target index) field is used to fill the target ID, an LCG ID (logical channel group identity) field is used to fill the logical channel group ID, and a Buffer Size (Buffer status) field is used to fill the Buffer status information corresponding to the logical channel group ID.

Step 2, the relay terminal sends a first buffer area status report of the remote terminal to the network equipment; and/or the relay terminal sends a second buffer status report of the relay terminal to the network equipment.

After receiving a first buffer status report sent by a remote terminal, a relay terminal is triggered to report the first buffer status report of the remote terminal to network equipment on a Uu interface.

Preferably, the relay terminal reports the first buffer status report of the remote terminal or the second buffer status report of the relay terminal to the network device through the buffer status report BSR MAC CE. In order to distinguish the type of the buffer status report reported by the relay terminal (i.e. whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal), the embodiment of the present invention may be implemented in the following ways:

the first method is as follows: and introducing type identification information of the buffer status reports into the BSR MAC CE, and distinguishing whether each buffer status report is a first buffer status report of a remote terminal or a second buffer status report of a relay terminal through the type identification information.

The second method comprises the following steps: the first buffer area state report of the far-end terminal and the second buffer area state report of the relay terminal are reported by using different physical resources, and the physical resources are configured by a network or agreed by a protocol.

The third method comprises the following steps: the first buffer area state report of the far-end terminal and the second buffer area state report of the relay terminal are reported by using different logic channel groups. For example, an individual logical channel group is defined for a plurality of remote terminals, and is used for reporting a first buffer status report of the remote terminal; and defining an independent logic channel group for the plurality of relay terminals, wherein the logic channel group is used for reporting the second buffer area state report of the relay terminals.

For the first mode, it is assumed that each remote terminal has N logical channel groups LCGs to be reported, and a format of a BSR MAC CE reported by a relay terminal is shown in fig. 6, where a Source index field is used to fill the type identifier information, and is used to indicate whether a Source of the buffer status report is a remote terminal or a relay terminal, and which specific terminal. A Destination index field for filling a Destination ID, an LCG ID (logical channel group identification) field for filling a logical channel group ID, and a Buffer Size field for filling Buffer status information corresponding to the logical channel group ID.

And 3, the network equipment allocates the resources of the Sidelink to the remote terminal and/or the relay terminal.

The network equipment determines whether the buffer status report carried by the BSR MAC CE is a first buffer status report of a remote terminal or a second buffer status report of the relay terminal according to the BSR MAC CE reported by the relay terminal. In case of the first buffer status report of a remote terminal, it is further necessary to make explicit which remote terminal is.

And 4, the network equipment sends the resource allocation information of the remote terminal and/or the relay terminal to the relay terminal.

The resource allocation information also needs to carry identification information of the remote terminal and/or identification information of the relay terminal. The content of the resource allocation information may be different according to different reporting modes of the buffer status report.

If the first mode is adopted in the step 2, the identity identification information of the remote terminal and/or the identity identification information of the relay terminal is carried in the resource allocation information.

And if the second mode is adopted in the step 2, carrying the identity identification information of the physical resource bearing the buffer area state report in the resource allocation information.

If the third mode is adopted in the step 2, the resource allocation information carries the identity information of the logical channel group bearing the buffer status report.

And 5, the relay terminal sends the resource allocation information of the remote terminal to the remote terminal.

The relay terminal receives the resource allocation information sent by the network equipment and determines a target terminal for which the resource allocation information aims. If the resource is allocated to the relay terminal, performing self D2D transmission by using the allocated resource; otherwise, the resource allocation information of the remote terminal is sent to the corresponding remote terminal.

Example two

It is assumed that the first buffer status report of the remote terminal and the second buffer status report of the relay terminal are unified and sent out and reported at the relay terminal. As shown in fig. 7, the interaction between the terminal and the network device includes the following steps:

and 6, the remote terminal reports the first buffer area state report of the remote terminal to the relay terminal. The first buffer status report is for the D2D link (also known as Sidelink).

Preferably, the remote terminal reports the first buffer status report to the relay terminal through the buffer status report BSR MAC CE. The BSR MAC CE of the remote terminal needs to include a destination ID (destination ID), each logical channel group ID corresponding to each destination ID, and buffer status information corresponding to each logical channel group ID.

And 7, the relay terminal sends the first buffer area state report of the remote terminal and the second buffer area state report of the relay terminal to network equipment.

The method comprises the steps that a triggering condition for reporting a buffer status report by a relay terminal is added, except for the existing BSR reporting condition, after the relay terminal receives BSR information sent by a far-end terminal, the relay terminal is triggered to simultaneously report a first buffer status report of the far-end terminal and a second buffer status report of the relay terminal on a Uu interface.

Preferably, the relay terminal reports the first buffer status report of the remote terminal and the second buffer status report of the relay terminal to the network device through one BSR MAC CE. In order to distinguish the type of the buffer status report reported by the relay terminal (i.e. whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal), the embodiment of the present invention may be implemented in the following ways:

the method is as follows: and introducing type identification information of the buffer status reports into the BSR MAC CE, and distinguishing whether each buffer status report is a first buffer status report of a remote terminal or a second buffer status report of a relay terminal through the type identification information.

The fifth mode is as follows: the first buffer area state report of the far-end terminal and the second buffer area state report of the relay terminal are reported by using different logic channel groups. For example, an individual logical channel group is defined for a plurality of remote terminals, and is used for reporting a first buffer status report of the remote terminal; and defining an independent logic channel group for the plurality of relay terminals, wherein the logic channel group is used for reporting the second buffer area state report of the relay terminals.

For the fourth mode, it is assumed that each remote terminal has 1 LCG to report, and a format of BSR MAC CE reported by the relay terminal is as shown in fig. 8, where a Source index field is used to fill the type identifier information, and is used to indicate whether the Source of the buffer status report is a remote terminal or a relay terminal, and which specific terminal. A Destination index field for filling a Destination ID, an LCG ID (logical channel group identification) field for filling a logical channel group ID, and a Buffer Size field for filling Buffer status information corresponding to the logical channel group ID.

Considering that the number of the remote terminals may be variable when reporting the BSR MAC CE in this case, a MAC CE length indication field (also referred to as an L domain) is introduced into a MAC CE header corresponding to the BSR MAC CE, or the MAC CE length indication field (also referred to as an L domain) is directly introduced into the BSR MAC CE; the MAC CE length indication field is used to indicate the length of the BSR MAC CE. The specific indication mode may be indicated by bitmap or directly indicated, and is not limited specifically herein.

And 8, the network equipment allocates the resources of the Sidelink to the remote terminal and/or the relay terminal.

The network equipment determines that the BSR MAC CE carries the first buffer status report of the remote terminal and the second buffer status report of the relay terminal according to the BSR MAC CE reported by the relay terminal. The first buffer status report for a remote terminal further needs to be explicit of which remote terminal.

And 9, the network equipment sends the resource allocation information of the remote terminal and/or the relay terminal to the relay terminal.

If the fourth method is adopted in step 7, the identity information of the remote terminal and/or the identity information of the relay terminal is carried in the resource allocation information.

If the fifth mode is adopted in step 7, the resource allocation information carries the identity information of the logical channel group bearing the buffer status report.

And step 10, the relay terminal sends the resource allocation information of the remote terminal to the remote terminal.

In summary, in the above embodiments of the present invention, when the relay terminal sends the buffer status report to the network device, the relay terminal indicates the type of the buffer status report to the network device, so that the network device can identify whether the buffer status report is the first buffer status report of the remote terminal or the second buffer status report of the relay terminal, and thus the network device can perform reasonable resource allocation of sildenk for the remote terminal and/or the relay terminal.

As shown in fig. 9, an embodiment of the present invention further provides a relay terminal, including: a transceiver 1120, a memory 1110, a processor 1100, and a computer program stored on the memory 1110 and executable on the processor 1100, the transceiver 1120 to:

Preferably, in the above embodiment of the present invention, the transceiver 1120 is further configured to:

Preferably, in the above embodiments of the present invention, the transceiver 1120 is further configured to:

Preferably, in the above embodiment of the present invention, the first buffer status report triggering condition includes: the relay terminal receives a first buffer status report of the remote terminal.

Preferably, in the above embodiment of the present invention, the type identifier information of the buffer status report includes: identification information of the relay terminal and/or identification information of the remote terminal;

Preferably, in the above embodiment of the present invention, the buffer status report MAC CE subheader includes a MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

Preferably, in the above embodiments of the present invention, the transceiver is further configured to:

Preferably, in the above embodiment of the present invention, the resource allocation information of the target terminal includes: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

Preferably, in the above embodiment of the present invention, the target identifier of the target terminal includes:

Preferably, in the above embodiment of the present invention, when the relay terminal respectively sends the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identifier of the target terminal further includes:

Preferably, in the above embodiment of the present invention, when the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal;

It should be noted that the relay terminal provided in the embodiments of the present invention is a relay terminal capable of executing the method for reporting a buffer status report, and all embodiments of the method for reporting a buffer status report are applicable to the relay terminal and all can achieve the same or similar beneficial effects.

As shown in fig. 10, an apparatus for reporting a buffer status report according to an embodiment of the present invention is applied to a relay terminal, and includes:

a sending module 1200, configured to send a buffer status report to a network device, and indicate a type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal.

Preferably, in the above embodiment of the present invention, the sending module is further configured to:

and when the triggering condition of a first buffer status report is met or the triggering condition of a second buffer status report is met, sending the first buffer status report and the second buffer status report to the network equipment through a buffer status report Media Access Control (MAC) layer Control Element (CE).

sending a buffer status report to the network equipment through the second type logical channel group; the second type of logical channel group is used for indicating that the type of the buffer area status report is a second buffer area status report of the relay terminal;

Preferably, in the above embodiment of the present invention, the apparatus further includes:

a header sending module, configured to send a buffer status report MAC CE sub-header to a network device, where the buffer status report MAC CE sub-header includes an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

Preferably, in the above embodiment of the present invention, the buffer status report MAC CE further carries a MAC CE length indication field, where the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

the information receiving module is used for receiving the resource allocation information of the target terminal sent by the network equipment; the target terminal includes: the remote terminal and/or the relay terminal;

the forwarding module is used for sending the resource allocation information of the remote terminal to the remote terminal under the condition of receiving the resource allocation information of the remote terminal;

and the determining module is used for determining the resources of the direct communication link sidelink between the terminals allocated to the relay terminal by the network equipment according to the resource allocation information of the relay terminal under the condition of receiving the resource allocation information of the relay terminal.

It should be noted that the apparatus for reporting a buffer status report provided in the embodiments of the present invention is an apparatus for reporting a buffer status report that can execute the method for reporting a buffer status report, and all embodiments of the method for reporting a buffer status report are applicable to the apparatus for reporting a buffer status report, and can achieve the same or similar beneficial effects.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the above-described method for reporting a buffer status report, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 9, an embodiment of the present invention further provides a network device, including: a transceiver 1120, a memory 1110, a processor 1100, and a computer program stored on the memory 1110 and executable on the processor 1100; the transceiver 1120 is configured to:

the processor 1100 is used for reading programs in the memory and executing the following processes: according to the buffer area status report, distributing the resources of the direct communication link sidelink between the terminals for the target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

the transceiver 1120 is further configured to: and transmitting the resource allocation information of the target terminal to the relay terminal.

receiving a buffer status report media access control layer control unit (MAC CE) sent by a relay terminal; and the buffer status report MAC CE carries the buffer status report and the type identification information of the buffer status report.

receiving a buffer area state report sent by a relay terminal through a first type of logic channel group, and determining the type of the buffer area state report as a first buffer area state report of a remote terminal according to the first type of logic channel group; and/or the presence of a gas in the atmosphere,

Preferably, in the above embodiment of the present invention, when the network device receives the first buffer status report and the second buffer status report through a buffer status reporting medium access control layer control element MAC CE, the transceiver 1120 is further configured to:

Preferably, in the above embodiment of the present invention, when the network device receives the first buffer status report and the second buffer status report through a buffer status report medium access control layer control element MAC CE, the buffer status report MAC CE further carries a MAC CE length indication field, where the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

It should be noted that, the network device provided in the embodiments of the present invention is a network device capable of executing the resource allocation method, and all embodiments of the resource allocation method are applicable to the network device and can achieve the same or similar beneficial effects.

As shown in fig. 11, an embodiment of the present invention further provides a resource allocation apparatus, applied to a network device, including:

a receiving module 1300, configured to receive a buffer status report sent by a relay terminal, and determine a type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

a resource determining module 1310, configured to allocate, according to the buffer status report, a resource of a sidelink of a direct communication link between terminals to a target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

an allocating and sending module 1320, configured to send resource allocation information of the target terminal to the relay terminal.

Preferably, in the above embodiment of the present invention, the receiving module is further configured to:

Preferably, in the above embodiment of the present invention, when the network device receives the first buffer status report and the second buffer status report through a buffer status report medium access control layer control element MAC CE, the apparatus further includes:

the device comprises a header receiving module, a relay terminal and a header sending module, wherein the header receiving module is used for receiving a buffer area state report MAC CE subheader sent by the relay terminal, and the buffer area state report MAC CE subheader comprises an MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

It should be noted that, the resource allocation apparatus provided in the embodiments of the present invention is a resource allocation apparatus capable of executing the resource allocation method, and all embodiments of the resource allocation method are applicable to the resource allocation apparatus and can achieve the same or similar beneficial effects.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the source allocation method embodiment described above, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

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 is applied to a relay terminal, and is characterized by comprising the following steps:

sending a buffer status report to a network device and indicating the type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

the sending of the buffer status report to the network device includes:

when a first buffer status report triggering condition is met, sending a first buffer status report to the network equipment;

or, when a first buffer status report triggering condition is met, sending the first buffer status report and the second buffer status report to the network device through a buffer status report media access control layer control element (MAC CE);

the first buffer status report triggering condition includes: the relay terminal receives a first buffer status report of the remote terminal.

2. The method of claim 1, wherein sending a buffer status report to a network device further comprises:

3. The method of claim 1, wherein sending a buffer status report to a network device further comprises:

and when a triggering condition of a second buffer status report is met, sending the first buffer status report and the second buffer status report to the network equipment through a buffer status report media access control layer control element (MAC CE).

4. The method according to any of claims 1-3, wherein said sending a buffer status report to a network device and indicating the type of the buffer status report comprises:

5. The method of claim 4, wherein the type identification information of the buffer status report comprises: identification information of the relay terminal and/or identification information of the remote terminal;

6. The method according to any of claims 1-3, wherein said sending a buffer status report to a network device and indicating the type of the buffer status report comprises:

7. The method of claim 1 or 2, wherein the sending a buffer status report to a network device and indicating the type of the buffer status report comprises:

8. The method of claim 3, further comprising:

9. The method of claim 3, wherein a buffer status report MAC CE further carries a MAC CE length indication field, and wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

10. The method of claim 1, wherein after the step of sending a buffer status report to a network device and indicating the type of the buffer status report, the method further comprises:

11. The method of claim 10, wherein the resource allocation information of the target terminal comprises: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

12. The method of claim 11, wherein the target identification of the target terminal comprises:

13. The method of claim 12, wherein when the relay terminal respectively transmits the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identification of the target terminal further comprises:

14. The method according to claim 12, wherein when the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal;

15. A resource allocation method is applied to network equipment and is characterized by comprising the following steps:

transmitting resource allocation information of a target terminal to a relay terminal;

the receiving of the buffer status report sent by the relay terminal includes:

receiving a first buffer status report sent by the relay terminal when a first buffer status report triggering condition is met;

or, receiving the first buffer status report and the second buffer status report sent by the relay terminal through a buffer status report media access control layer control element (MAC CE) when the relay terminal meets a first buffer status report trigger condition;

16. The method of claim 15, wherein the resource allocation information of the target terminal comprises: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

17. The method of claim 16, wherein the target identification of the target terminal comprises:

18. The method of claim 16, wherein when the relay terminal respectively transmits the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identification of the target terminal further comprises:

19. The method according to claim 16, wherein when the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal;

20. The method according to claim 15, wherein the receiving the buffer status report sent by the relay terminal and determining the type of the buffer status report comprises:

21. The method of claim 20, wherein the type identification information of the buffer status report comprises: identification information of the relay terminal and/or identification information of the remote terminal;

22. The method of claim 15, wherein the receiving the buffer status report sent by the relay terminal and determining the type of the buffer status report comprises:

23. The method of claim 15, wherein the receiving the buffer status report sent by the relay terminal and determining the type of the buffer status report comprises:

24. The method of claim 15, wherein when the network device receives the first buffer status report and the second buffer status report through a buffer status report medium access control layer control element (MAC CE), the method further comprises:

25. The method of claim 15, wherein when the network device receives the first buffer status report and the second buffer status report through a buffer status report medium access control layer control element (MAC CE), the MAC CE length indication field is further carried by the buffer status report MAC CE, and wherein the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

26. A relay terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the transceiver is configured to:

the transceiver is further configured to:

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

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

29. The relay terminal according to any of claims 26-28, wherein the transceiver is further configured to:

30. The relay terminal of claim 29, wherein the type identifier information of the buffer status report comprises: identification information of the relay terminal and/or identification information of the remote terminal;

31. The relay terminal according to any of claims 26-28, wherein the transceiver is further configured to:

32. The relay terminal according to claim 26 or 27, wherein said transceiver is further configured to:

transmitting a buffer status report to the network device on the first physical resource; the first physical resource is used for indicating the type of the buffer status report to be a first buffer status report of a remote terminal; and/or the presence of a gas in the gas,

33. The relay terminal of claim 28, wherein the transceiver is further configured to:

34. The relay terminal of claim 28, wherein the buffer status report MAC CE subheader comprises a MAC CE length indication field; wherein the MAC CE length indication field is used for indicating the length of the buffer status report MAC CE.

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

36. The relay terminal of claim 35, wherein the resource allocation information of the target terminal comprises: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

37. The relay terminal of claim 36, wherein the target identifier of the target terminal comprises:

38. The relay terminal of claim 36, wherein when the relay terminal respectively transmits the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identifier of the target terminal further comprises:

39. The relay terminal according to claim 36, wherein when the target terminal is a remote terminal, the identification information of the target terminal is identification information of the remote terminal;

40. A reporting device of buffer status report is applied to a relay terminal, and is characterized in that the device comprises:

a sending module, configured to send a buffer status report to a network device, and indicate a type of the buffer status report; wherein the types of the buffer status report include: a first buffer status report of the remote terminal and/or a second buffer status report of the relay terminal;

the sending of the buffer status report to the network device includes:

or, when a first buffer status report triggering condition is satisfied, sending the first buffer status report and the second buffer status report to the network device through a buffer status report media access control layer control element (MAC CE);

41. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for reporting a buffer status report according to any one of claims 1 to 14.

42. A network device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the transceiver is configured to:

the transceiver is further configured to: transmitting resource allocation information of a target terminal to a relay terminal;

the receiving of the buffer status report sent by the relay terminal includes:

43. The network device of claim 42, wherein the resource allocation information of the target terminal comprises: the network equipment distributes the resource information of sidelink to the target terminal, and the target identification of the target terminal.

44. The network device of claim 43, wherein the target identity of the target terminal comprises:

45. The network device of claim 44, wherein when the relay terminal respectively transmits the first buffer status report of the remote terminal and the second buffer status report of the relay terminal on different physical resources, the target identifier of the target terminal further comprises:

46. The network device according to claim 44, wherein when the target terminal is a remote terminal, the identification information of the target terminal is the identification information of the remote terminal;

47. The network device of claim 42, wherein the transceiver is further configured to:

48. The network device of claim 47, wherein the type identification information of the buffer status report comprises: identification information of the relay terminal and/or identification information of the remote terminal;

49. The network device of claim 42, wherein the transceiver is further configured to:

receiving a buffer area state report sent by a relay terminal through a first type logic channel group, and determining the type of the buffer area state report as a first buffer area state report of a remote terminal according to the first type logic channel group; and/or the presence of a gas in the gas,

50. The network device of claim 42, wherein the transceiver is further configured to:

51. The network device of claim 42, wherein when the network device receives the first buffer status report and the second buffer status report via a buffer status reporting medium access control layer control element (MAC CE), the transceiver is further configured to:

52. The network device of claim 42, wherein when the network device receives the first buffer status report and the second buffer status report through a buffer status report media access control layer control element (MAC CE), the MAC CE length indication field is further carried by the buffer status report MAC CE, and wherein the MAC CE length indication field is used to indicate the length of the buffer status report MAC CE.

53. A resource allocation apparatus applied to a network device includes:

a resource determining module, configured to allocate, according to the buffer status report, a resource of a direct communication link sidelink between terminals to a target terminal; the target terminal includes: the remote terminal and/or the relay terminal;

the allocation sending module is used for sending the resource allocation information of the target terminal to the relay terminal;

the receiving of the buffer status report sent by the relay terminal includes:

54. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the resource allocation method according to any one of claims 15 to 25.