CN111436032A

CN111436032A - Method for reporting and receiving buffer status report, method and equipment for allocating resources

Info

Publication number: CN111436032A
Application number: CN201910028748.5A
Authority: CN
Inventors: 谌丽; 赵亚利
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2020-07-21
Anticipated expiration: 2039-01-11
Also published as: CN111436032B

Abstract

The invention provides a method for reporting and receiving a buffer status report, a method for allocating resources and equipment, and relates to the technical field of communication. The reporting method of the buffer status report is applied to a terminal and comprises the following steps: reporting a Buffer Status Report (BSR) of a direct communication link of a second access network technology (RAT) to network equipment of the first RAT through an interface between a terminal of the first RAT and a network; wherein the first RAT is different from the second RAT. According to the scheme, the BSR of the direct communication link of the second RAT is reported to the network equipment of the first RAT through the interface between the terminal of the first RAT and the network, so that the transmission of the BSR of the direct communication link of the cross-RAT is realized, the resource allocation of the cross-RAT is further ensured, and the communication reliability can be ensured.

Description

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

Technical Field

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

Background

In a 5G scenario, a New Radio (NR) V2X (Vehicle-to-Everything) and a long Term Evolution (L ong Term Evolution, L TE) V2X need to cooperate, an interface between a terminal and a network (i.e., a Uu interface) may be an interface between NR and L TE, and a sidelink (translated into a direct communication link or a bypass) interface may also be an interface between NR and L TE.

At present, the deployment scenario of NR V2X supports different RATs (radio access technologies) between a Uu interface and a sidelink interface, and even supports the NR Uu interface to allocate L TE sidelink resources (i.e., NR mode1) to a terminal, however, the prior art cannot support performing sidelink BSR (Buffer status reporting, Buffer area reporting or Buffer status reporting) reporting under the condition that the RATs of the Uu interface and the sidelink interface are different, which results in that resource allocation cannot be performed across RATs normally, and communication reliability cannot be guaranteed.

Disclosure of Invention

Embodiments of the present invention provide a method for reporting and receiving a buffer status report, a method for allocating resources, and a device, so as to solve the problem that the prior art cannot support the reporting of a sidelink BSR under the condition that RATs of a Uu port and a sidelink interface are different, which causes that resources cannot be normally allocated across RATs, and cannot ensure communication reliability.

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

reporting a Buffer Status Report (BSR) of a direct communication link of a second access network technology (RAT) to network equipment of the first RAT through an interface between a terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

Specifically, a buffer status report media access control unit (BSRMAC CE) of the direct communication link of the second RAT is separately transmitted on an interface between a terminal and a network of the first RAT; or

And the BSR MAC CE of the direct communication link of the second RAT and uplink data multiplexing of an interface between the terminal of the first RAT and the network are transmitted in a media access control protocol data unit (MAC PDU).

Further, when the BSR MAC CE of the direct communication link of the second RAT and the uplink data multiplex of the interface between the terminal and the network of the first RAT are transmitted in one MAC PDU, the BSR MAC CE of the direct communication link of the second RAT has a lower priority level than the BSR MAC CE of the direct communication link of the first RAT; or

And if the terminal adopts a network scheduling resource allocation mode and BSR triggering of the direct communication link of the first RAT exists, the priority level of the BSR MAC CE of the direct communication link of the second RAT is higher than that of the BSR MAC CE of the direct communication link of the first RAT.

Specifically, the buffer status report media access control units BSRMAC CE of the direct communication links of different RATs are distinguished by using different MAC subheaders.

Further, different logical channel identification information is adopted to indicate BSR MACCEs of direct communication links of different RATs; or

And indicating the BSR MAC CEs of the direct communication links of different RATs by adopting the same logical channel identification information, and distinguishing the BSR MAC CEs of the direct communication links of different RATs by adopting a preset number of bits.

Specifically, the buffer status reporting mac element BSR mac ce of the direct communication link of different RATs adopts an independent format.

Optionally, the reporting, by an interface between a terminal of a first access network technology RAT and a network, a buffer status report BSR of a direct communication link of a second RAT to a network device of the first RAT includes:

multiplexing uplink transmission of interfaces between terminals and networks of L TE direct communication link buffer status report media access control units (BSR MAC CE) and NR into an NR media access control protocol data unit (MAC PDU), and transmitting the data to NR network equipment.

the uplink transmission of the interface between terminals of buffer status report media access control units (BSR MAC CEs) and L TE of the NR direct communication link and the network is multiplexed into a medium access control protocol data unit (MAC PDU) of L TE and transmitted to the L TE network equipment.

Optionally, before reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT through the interface between the terminal of the first access network technology RAT and the network, the method further includes:

when the trigger condition of the BSR of the direct communication link of a second RAT is met, if the BSR of the direct communication link of the second RAT can trigger a scheduling request, sending the scheduling request on an interface between a terminal of the first RAT and a network to a network device of the first RAT;

receiving first resource allocation information of an interface between a terminal of the first RAT and a network, which is sent by a network device of the first RAT;

the reporting, at the interface between the terminal of the first access network technology RAT and the network, a buffer status report BSR of a direct communication link of a second RAT to a network device of the first RAT, includes:

and reporting the BSR of the direct communication link of the second RAT to the network equipment of the first RAT according to the first resource allocation information.

when the trigger condition of the BSR of the direct communication link of a second RAT is met, if the BSR of the direct communication link of the second RAT cannot trigger a scheduling request, waiting for second resource allocation information of an interface between a terminal of the first RAT and a network;

and reporting the BSR of the direct communication link of the second RAT to the network equipment of the first RAT according to the second resource allocation information when the second resource allocation information is acquired.

Optionally, after reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT through the interface between the terminal of the first access network technology RAT and the network, the method further includes:

receiving third resource allocation information of a direct communication link of the second RAT, which is sent by a network device of the first RAT;

and transmitting data according to the third resource allocation information.

receiving fourth resource allocation information of a direct communication link of a second RAT, which is sent by a network device of the second RAT;

and transmitting data according to the fourth resource allocation information.

The embodiment of the present invention further provides a receiving method for a cache status report, which is applied to a network device of a first access network technology RAT, and includes:

receiving a buffer status report BSR of a direct communication link of a second RAT reported by a terminal of a first RAT through an interface between the terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

Optionally, before the receiving a buffer status report BSR of a direct communication link of a second RAT reported by a terminal of a first RAT through an inter-network interface, the method further includes:

receiving a scheduling request on an interface between a terminal of the first RAT and a network, which is sent by the terminal;

and sending first resource allocation information of an interface between the terminal of the first RAT and a network to the terminal.

and sending second resource allocation information of an interface between the terminal of the first RAT and a network to the terminal.

Optionally, after receiving the buffer status report BSR of the direct communication link of the second RAT reported by the terminal of the first RAT through the inter-network interface, the method further includes:

and if the network equipment of the first RAT can allocate the direct communication link resource of the second RAT to the terminal, sending third resource allocation information of the direct communication link of the second RAT.

if the network device of the first RAT cannot allocate the direct communication link resource of the second RAT to the terminal, sending a buffer status report media access control element (BSR mac ce) of the direct communication link of the second RAT to the network device of the second RAT, so that the network device of the second RAT sends fourth resource allocation information of the direct communication link of the second RAT to the terminal.

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

receiving a buffer status report media access control (BSR) MAC CE of a direct communication link of a second RAT, which is sent by a network device of a first RAT;

and sending fourth resource allocation information of the direct communication link of the second RAT to the terminal according to the BSR MAC CE of the direct communication link of the second RAT.

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 processor implements the following steps when executing the program:

reporting a Buffer Status Report (BSR) of a direct communication link of a second access network technology (RAT) to network equipment of the first RAT through an interface between a terminal of the first RAT and a network by the transceiver;

wherein the first RAT is different from the second RAT.

Optionally, the first RAT is a new air interface NR, the second RAT is long term evolution L TE, and the processor implements the following steps when executing the program:

Optionally, the first RAT is long term evolution L TE, the second RAT is a new air interface NR, and the processor implements the following steps when executing the program:

Optionally, the processor executes the program to further implement the following steps:

the processor implements the following steps when executing the program:

receiving, by the transceiver, third resource allocation information for a direct communication link of the second RAT transmitted by a network device of the first RAT;

and transmitting data according to the third resource allocation information.

receiving, by the transceiver, fourth resource allocation information for a direct communication link of a second RAT transmitted by a network device of the second RAT;

and transmitting data according to the fourth resource allocation information.

An embodiment of the present invention further provides a network device, where the network device is a network device of a first access network technology RAT, and the network device includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements the following steps when executing the program:

receiving a Buffer Status Report (BSR) of a direct communication link of a second RAT reported by a terminal through an interface between the terminal of a first RAT and a network through the transceiver;

wherein the first RAT is different from the second RAT.

An embodiment of the present invention further provides a network device, where the network device is a network device of a second access network technology RAT, and the network device includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements the following steps when executing the program:

receiving, by a transceiver, a buffer status report media access control (BSR) MAC CE of a direct communication link of a second RAT transmitted by a network device of a first RAT;

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for reporting a buffer status report, the method for receiving a buffer status report, or the method for allocating resources.

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

a reporting module, configured to report a buffer status report BSR of a direct communication link of a second RAT to a network device of a first RAT through an interface between a terminal of the first access network technology RAT and a network;

wherein the first RAT is different from the second RAT.

An embodiment of the present invention further provides a network device, where the network device is a network device of a first access network technology RAT, and the network device includes:

the first receiving module is used for receiving a Buffer Status Report (BSR) of a direct communication link of a second RAT reported by a terminal through an interface between the terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

An embodiment of the present invention further provides a network device, where the network device is a network device of a second access network technology RAT, and the network device includes:

a second receiving module, configured to receive a buffer status report medium access control element BSR MAC CE of a direct communication link of a second RAT, where the buffer status report medium access control element BSR MAC CE is sent by a network device of a first RAT;

and a sending module, configured to send, according to the BSR MAC CE of the direct communication link of the second RAT, fourth resource allocation information of the direct communication link of the second RAT to the terminal.

The invention has the beneficial effects that:

according to the scheme, the BSR of the direct communication link of the second RAT is reported to the network equipment of the first RAT through the interface between the terminal of the first RAT and the network, so that the transmission of the BSR of the direct communication link of the cross-RAT is realized, the resource allocation of the cross-RAT is further ensured, and the communication reliability can be ensured.

Drawings

Fig. 1 shows a schematic diagram of a terminal and a base station, and a link between terminals for communication;

FIG. 2 shows one of the structural diagrams of the L TE MAC subheader;

FIG. 3 is a second schematic diagram of the structure of the L TE MAC subheader;

FIG. 4 is a third schematic diagram illustrating the structure of the L TE MAC subheader;

FIG. 5 shows one of the structural diagrams of L TE sidelink BSR MAC CE;

FIG. 6 shows a second schematic structure of L TE sidelink BSR MAC CE;

FIG. 7 is a diagram illustrating one of MAC subheader structures of NR MAC PDUs;

FIG. 8 is a second schematic diagram of the MAC subheader structure of NR MAC PDU;

FIG. 9 is a third diagram of the MAC subheader structure of NR MAC PDU;

FIG. 10 is a diagram showing one of the sub PDU structures of NR MAC PDUs;

FIG. 11 is a second schematic view showing the structure of a sub PDU of NR MAC PDU;

fig. 12 is a flowchart illustrating a reporting method of a buffer status report according to an embodiment of the present invention;

FIG. 13 is a flowchart illustrating a first embodiment of the present invention;

FIG. 14 shows one of the schematic formats of NR sidelink BSR MAC CE and L TE sidelink BSR MAC CE in case one;

FIG. 15 is a second schematic diagram of the NR sidelink BSR MAC CE and L TE sidelink BSR MAC CE formats under the first condition;

FIG. 16 is a flowchart illustrating a second embodiment of the present invention;

fig. 17 is a schematic diagram illustrating a specific implementation flow of a third case according to an embodiment of the present invention;

fig. 18 is a schematic diagram illustrating a specific implementation flow of a case four according to the embodiment of the present invention;

fig. 19 shows one of the schematic formats of NR sidelink BSR MAC CE and L TE sidelink BSR MAC CE in case four;

fig. 20 shows a second schematic format diagram of NR sidelink BSR MAC CE and L TE sidelink BSR MAC CE in case four;

fig. 21 is a schematic diagram illustrating a specific implementation flow of case five according to an embodiment of the present invention;

FIG. 22 is a flowchart illustrating a sixth exemplary implementation of an embodiment of the present invention;

fig. 23 is a flowchart illustrating a method for receiving a buffer status report according to an embodiment of the present invention;

FIG. 24 is a flowchart illustrating a resource allocation method according to an embodiment of the invention;

fig. 25 is a block diagram of a terminal according to an embodiment of the present invention;

fig. 26 is a diagram showing the construction of a terminal according to an embodiment of the present invention;

FIG. 27 shows one of the block diagrams of a network device of an embodiment of the invention;

FIG. 28 is a diagram illustrating one of the structures of a network device according to an embodiment of the present invention;

FIG. 29 is a second block diagram of a network device according to an embodiment of the invention;

fig. 30 shows a second configuration diagram of a network device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Some concepts mentioned in the embodiments of the present invention are first explained as follows.

Direct communication between devices

Direct inter-device communication is a typical communication means of a Vehicle-to-Everything (V2X) system. Devices and devices in close proximity to each other allow direct communication between the devices. For convenience of description, a direct link between devices, i.e., a D2D (Device to Device) link, is defined as a Sidelink (translated into a direct communication link or bypass), or PC5 interface; the cellular communication link between the Network and the direct communication Device is referred to as a D2N (Device to Network) link, or the interface between the terminal and the Network (i.e., the Uu interface). As shown in fig. 1.

The devices that communicate directly may all be on-line or off-line, or some may be on-line and some off-line. So-called on-network, i.e. devices participating in direct communication, are located within the 3GPP (3rd Generation partnership project) direct communication carrier coverage, and so-called off-network, i.e. devices participating in direct communication, are not located within the 3GPP direct communication carrier coverage. Stated another way, the on-line device may search for a 3GPP base station, which may be controlled by the 3GPP base station if necessary.

Typical direct communication scenarios include the following three:

a110, one-to-one communication (unicast) between direct communication terminals;

a120, a device can send the same data to all devices in a communication group at a time (multicast);

a130, one device at a time can send the same data (broadcast) to all nearby devices.

(2) Direct communication resource allocation mode

Direct communication supports two resource allocation methods:

a210, a resource allocation mode scheduled by the network side (called mode1 in 5G and mode3 in L TE), that is, a mode in which the network side (base station) allocates direct link resources to the terminal on the Uu interface according to the Sidelink BSR reported by the terminal.

A220, the terminal autonomously selects the resource allocation mode of the resource (called mode2 in 5G and mode4 in L TE), that is, the terminal selects the resource from the transmission resource pool pre-configured for the terminal or broadcasted by the base station for the transmission of the direct communication link.

For a deployment scenario, the Uu interface and the sidelink interface may use the same or different radio access technologies (RATs including L TE or NR), and when the same RAT is used, for a resource allocation mode scheduled by the network side (5G mode 1/L TE mode3), the terminal reports the sidelink BSR on the Uu interface according to the specification of the corresponding RAT.

(3) Existing sidelink BSR formats

The prior art has not specified the format of the NR sidelink BSR + L TE sidelink BSR as follows.

1. L TE MAC subheader and L CID value for L TE sidelink BSR:

the Sidelink BSR MAC CE has a corresponding MAC subheader (subheader), as shown in fig. 2 to 4, including a 5-bit logical channel ID (L CID), an F2/E/F field, and a length indicator L field.

L TE distinguishes whether the MAC CE is a Sidelink BSRMAC CE by L CID carried in the MAC subheader, and L CID corresponding to the Sidelink BSR MAC CE is shown in Table 1 below.

TABLE 1L TE UPSTREAM L CID parameter

2. L TE sidelink BSR MAC CE format

For the resource allocation mode of direct communication network scheduling, the scellink BSR reported by the terminal is called scellink BSR, which is reported based on the Group Index + L CG ID, the specific format is shown in fig. 5 and fig. 6, where the Group Index identifies the destination address number corresponding to the data, the L CG ID is a logical channel Group number, N in fig. 5 is an even number, and N in fig. 6 is an odd number.

3. Construction of NR MAC PDU (Protocol Data Unit)

An NR MAC PDU comprises one or more MAC sub-PDUs (sub-PDUs), one MAC sub-PDU comprises one MAC sub-header and 0 or 1 MAC load part, the MAC load part refers to a MAC control Unit MAC CE, a MAC Service Data Unit MAC SDU (Service Data Unit) or padding, the Sidelink BSR MAC CE is a MAC control Unit, each MAC CE or MAC SDU or padding needs a MAC sub-header indication, L CID field in the MAC sub-header is used for indicating MAC CE type or logic channel number corresponding to the MAC SDU, the format of the MAC sub-header is shown in figures 7 to 9, the format of the NR MAC sub-header is completely different from that of L TE MAC sub-header, for example, the L CID length is 6bit, the L field length is 8 bit or 16bit, and the format of the sub-PDU is shown in figures 10 and 11.

The L CID values that have now been used in the NR MAC PDU are shown in Table 2.

Table 2 used L CID value in NR MAC PDU

However, the current NR V2X deployment scenario supports that RATs of the Uu port and the sidelink port are different, and even supports that the NR Uu port allocates L TE sidelink resources (i.e., NR mode1) to the terminal, and the sidelink BSR reporting is necessary in this resource allocation mode.

The invention provides a method and equipment for reporting and receiving a buffer status report, and a method and equipment for allocating resources, aiming at the problems that the prior art cannot support the reporting of a sidelink BSR under the condition that the RATs of a Uu port and a sidelink interface are different, so that the resources can not be normally allocated across the RATs, and the communication reliability can not be ensured.

As shown in fig. 12, the method for reporting a buffer status report according to the embodiment of the present invention is applied to a terminal, and includes:

step 121, reporting a buffer status report BSR of a direct communication link of a second RAT to a network device of a first RAT through an interface between a terminal of the first access network technology RAT and a network;

the first RAT is different from the second RAT, for example, when the first RAT is long term evolution (L TE), the second RAT is a new air interface (NR), further, the network device of the first RAT is a L TE network device (for example, L TE base station), when the first RAT is NR, the second RAT is L TE, further, the network device of the first RAT is an NR network device (for example, NR base station).

The interface between the terminal and the network is the Uu interface.

It should be noted that, optionally, the buffer status report medium access control element (BSR MAC CE) of the direct communication link of the second RAT may be separately transmitted on the interface between the terminal of the first RAT and the network; optionally, the BSR MAC CE of the direct communication link of the second RAT may also be transmitted in a medium access control protocol data unit (MAC PDU) in multiplexing with uplink data of an interface between the terminal of the first RAT and the network, and further, in this case, the priority level of the BSR MAC CE of the direct communication link of the second RAT is lower than that of the BSRMAC CE of the direct communication link of the first RAT, or, if the terminal adopts a network-scheduled resource allocation mode and has a BSR trigger of the direct communication link of the first RAT, the priority level of the BSR MAC CE of the direct communication link of the second RAT is higher than that of the direct communication link of the first RAT.

It should be noted that, during transmission, if transmission of all BSR MAC CEs cannot be guaranteed in a MAC PDU, transmission of BSR MAC CEs with higher priority is preferentially guaranteed.

It should be noted that, in order to facilitate the differentiation of the BSR MAC CEs of different RATs, the BSR MAC CEs of the direct communication links of different RATs are differentiated by using different MAC subheaders, and further, different logical channel identification information (e.g., L CID) may be used to indicate the BSR MAC CEs of the direct communication links of different RATs or,

in order to facilitate the differentiation of BSR MAC CEs of different RATs, BSRMAC CEs of direct communication links of different RATs may also use the same logical channel identification information to indicate BSR MAC CEs of direct communication links of different RATs, and use a preset number of bits to differentiate BSR MAC CEs of direct communication links of different RATs, it should be noted that the preset number of bits may be 1-bit original redundancy bits (i.e., R domain), that is, the redundancy bits in the MAC subheader are used to differentiate BSR MAC CEs of direct communication links of different RATs, that is, when a BSR of L TE is reported by an NR Uu interface, L CID value reserved by BSR of NR direct communication link is used, when a BSR of NR direct communication link is reported by a L Uu interface, L CID value reserved by BSR of L TE direct communication link is used, the difference is that when an R domain in the original MAC subheader indicates whether BSR is a direct communication link identical to a Uu interface RAT.

It should be further noted that the BSR MAC CEs of the direct communication links of different RATs may be reported in the same format, or may be reported in respective independent formats.

Specifically, the first RAT is NR, the second RAT is L TE, and the specific implementation manner of step 121 is as follows:

and multiplexing uplink transmission of interfaces between terminals and networks of BSR MAC CE and NR of a direct communication link of L TE to an NR media access control protocol data unit (MAC PDU) and transmitting the MAC PDU to NR network equipment.

In this case, when the direct communication link of L TE adopts the resource allocation mode (i.e., mode3) scheduled by the base station side, the BSR report of L TE can be performed regardless of whether or not there is an NR direct communication link and which resource allocation mode the NR direct communication link adopts.

Specifically, the first RAT is L TE, the second RAT is NR, and the specific implementation manner of step 121 is as follows:

and multiplexing uplink transmission of interfaces between terminals and networks of the BSR MAC CEs and L TEs of the NR direct communication link into a L TE media access control protocol data unit (MAC PDU) and transmitting the MAC PDU to L TE network equipment.

In this case, when the direct communication link of the NR adopts the resource allocation mode (i.e., mode1) scheduled by the base station, the direct communication link BSR reporting of the NR can be performed regardless of whether or not the direct communication link of L TE and the direct communication link of L TE adopt any resource allocation mode.

It should be further noted that, before reporting the BSR of the direct communication link of the second RAT to the network device of the first RAT, the terminal needs to first acquire resource allocation information of the Uu interface of the first RAT, and report the BSR of the direct communication link of the second RAT according to the resource allocation information.

Optionally, when a trigger condition of a BSR of a direct communication link of a second RAT is satisfied, if the BSR of the direct communication link of the second RAT can trigger a Scheduling Request (SR), sending a scheduling request on an interface between a terminal of the first RAT and a network to a network device of the first RAT; the method comprises the steps that a network device of a first RAT performs resource allocation of a Uu interface of the first RAT for a terminal, first resource allocation information of the Uu interface of the first RAT is sent to the terminal, and the terminal receives the first resource allocation information of the Uu interface of the first RAT sent by the network device of the first RAT; and reporting the BSR of the direct communication link of the second RAT to the network equipment of the first RAT according to the first resource allocation information.

Optionally, when a trigger condition of a BSR of a direct communication link of a second RAT is satisfied, if the BSR of the direct communication link of the second RAT cannot trigger a scheduling request, waiting for second resource allocation information of an interface between a terminal of the first RAT and a network; the network equipment of the first RAT performs resource allocation of the Uu interface of the first RAT for the terminal at a proper time, and sends second resource allocation information of the Uu interface of the first RAT to the terminal, and when the terminal acquires the second resource allocation information, the terminal reports BSR of a direct communication link of the second RAT to the network equipment of the first RAT according to the second resource allocation information.

It should be further noted that after the terminal reports the BSR of the direct communication link of the second RAT, the terminal needs to wait for the network device to allocate the resource of the direct communication link for the terminal, and then perform data transmission on the resource.

Optionally, if the network device of the first RAT is capable of allocating the direct communication link resource of the second RAT to the terminal, the network device of the first RAT directly sends third resource allocation information of the direct communication link of the second RAT to the terminal, and the terminal receives the third resource allocation information of the direct communication link of the second RAT sent by the network device of the first RAT and performs data transmission according to the third resource allocation information.

It should be noted that, the fact that the network device of the first RAT is capable of allocating the direct communication link resource of the second RAT to the terminal means that the network device of the first RAT configures a capability of allocating the direct communication link resource of the second RAT, or the network device of the first RAT deploys both the direct communication link processing unit of the first RAT and the direct communication link processing unit of the second RAT, and if the network device of the first RAT receives the direct communication link BSR MAC CE of different RATs at the Uu interface, after the direct communication link BSR MAC CE is identified by the MAC subheader, the content of the direct communication link BSR MAC CE does not need to be analyzed, and the content is delivered to the direct communication link processing unit of the corresponding RAT through the internal interface.

Optionally, if the network device of the first RAT cannot allocate the direct communication link resource of the second RAT to the terminal, sending the BSR MAC CE of the direct communication link of the second RAT to the network device of the second RAT, where the network device of the second RAT sends fourth resource allocation information of the direct communication link of the second RAT to the terminal according to the BSR MAC CE of the direct communication link of the second RAT, and the terminal receives the fourth resource allocation information of the direct communication link of the second RAT sent by the network device of the second RAT and performs data transmission according to the fourth resource allocation information.

It should be noted that, the fact that the network device of the first RAT is unable to allocate the direct communication link resource of the second RAT to the terminal means that the network device of the first RAT does not configure the capability of allocating the direct communication link resource of the second RAT, which is mainly applied to a dual connectivity scenario, if the network device of the first RAT receives the BSR MAC CE of the direct communication link of a different RAT at a Uu interface, and after identifying the BSR MAC CE of the direct communication link through a MAC subheader, the content of the BSR MAC CE is transferred to the base station of the corresponding RAT through an inter-network-device interface (i.e., an Xn interface or an X2 interface) of the dual connectivity without parsing the content of the BSR MAC CE.

The following specifically describes a specific implementation manner of the embodiment of the present invention in practical application.

In case one, the terminal sends L TE sidelink BSR MAC CE on NR MAC PDU of NR Uu interface, and the NR base station may allocate L TE sidelink resource

As shown in fig. 13, the specific implementation flow is as follows:

step S11, the terminal generates L TE sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

it should be noted that this step is an optional step, that is, when the L TE sidelink BSR triggering condition is met, if a periodic (regular) BSR is triggered, a scheduling request SR on the NR Uu interface is triggered, and a Physical Uplink Control Channel (PUCCH) resource transmitting the SR may be configured by the base station for the terminal independently for the SR triggered by the L TE sidelink BSR, or the same resource as the SR triggered by the NR sidelink BSR, or the same PUCCH resource as the SR triggered by the BSR on the NR Uu interface.

When the ue is a periodic BSR or a padding BSR, the terminal does not send a scheduling request but waits for resource allocation of the NR Uu interface.

Step S12, NR base station distributes NR Uu resource for terminal;

it should be noted that, when the NR base station receives a scheduling request sent by the terminal, the NR base station allocates an NR Uu resource to the terminal; or, the NR base station directly allocates the NR Uu resource to the terminal.

Step S13, sending L TE sidelink BSR MAC CE to the NR base station;

specifically, the terminal sends L TE sidelink BSR MAC CE on the NR Uu resource allocated by the NR base station, where the L TE sidelink BSR MAC CE adopts the MAC sub-PDU structure of the NR MAC PDU, uses the NR MAC sub-header format, and adopts a L CID value different from that used for other NR transmissions, or adopts the L CID value of NR sidelink BSR, but uses R bits (i.e. redundant bits in the MAC CE) to indicate that the corresponding MAC CE is L TE sidelink BSR MAC CE, when organizing data and MAC CE into MAC PDU, the priority level of L TE sidelink BSR MAC CE may be lower than that of NR sidelink BSRMAC CE, or, when the terminal adopts the resource allocation mode of network scheduling and has NR sidelink trigger, the priority level of L TE sidelink BSR MAC CE may be higher than that of NR sidelink BSR MAC CE.

Fig. 14 and 15 show two examples of an NR Uu interface MAC PDU including an NR sidelink BSR MAC CE and an L TE sidelink BSR MAC CE, respectively, where, as shown in fig. 14, the NR sidelink BSR MAC CE and the L TE sidelink BSR MAC CE are distinguished by L CID value, as shown in fig. 15, by R bit, in which case the values of L CID1 and L CID2 in fig. 15 are the same, L TE sidelink BSR MAC CE in fig. 14 and 15 is a format including odd number of buffer sizes, the NR sidelink MAC CE format is not yet specified by the current protocol and is only a possible configuration example, the logical channel priority order in fig. 14 and 15 is such that the NR sidelink BSR MAC CE is higher than the L TE BSR MAC CE, and if, the front and back order of two MAC PDUs in fig. 14 and 15 are not enough to be interchanged, the MAC PDU and MAC PDU may not include a low priority data or MAC PDU may not include a low priority.

Step S14, the NR base station receives L TE sidelink BSR MAC CE sent by the terminal, and allocates sidelink transmission resource for the terminal;

and step S15, the terminal transmits data on the allocated L TE sidelink resource.

Case two, the terminal sends L TE sidelink BSR MACCE, &lTtT translation = L "&gTt L &lTt/T &gTt TE base station unit allocation L TE sidelink resources on NR MAC PDU of NR Uu interface (L TE base station unit and NR base station unit co-sited deployment)

As shown in fig. 16, the specific implementation flow is as follows:

step S21, the terminal generates L TE sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

it should be noted that this step is an optional step, that is, when the L TE sidelink BSR triggering condition is met, if a regular BSR is triggered, a scheduling request SR on the NR Uu interface is triggered, and a PUCCH resource for sending the SR may be configured by the base station for the SR triggered by the L TE sidelink BSR for the terminal, or the same resource as the SR triggered by the NR sidelink BSR is used, or the same PUCCH resource as the SR triggered by the BSR on the NR Uu interface is used.

Step S22, NR base station unit distributes NR Uu resource for terminal;

it should be noted that, when the NR base station unit receives the scheduling request sent by the terminal, the NR Uu resource is allocated to the terminal; or, the NR base station unit directly allocates the NR Uu resource to the terminal.

Step S23, sending L TE sidelink BSR MAC CE to the NR base station unit;

specifically, the terminal transmits L TE sidelink BSRMAC CE on NR Uu resources allocated to the terminal by the NR base station unit, where the L TE sidelink bsmac CE adopts a MAC sub-PDU structure of NR MAC PDU, uses NR MAC subheader format, and adopts L CID value different from that used by other NR transmission, or adopts L CID value of NR sidelink BSR, but uses R bit to indicate that the corresponding MAC CE is L TE sidelink BSR MAC CE, when organizing data and MAC CE into MAC PDU, the priority level of L TE sidelink BSR MAC CE may be lower than that of NR sidelink BSR MAC CE, or when the terminal adopts network scheduled resource allocation mode and has NR sidelink BSR trigger, the priority level of L TE sidelink BSR MAC CE may be higher than that of NR sidelink BSR MAC CE.

In step S24, the NR base station unit receives the L TE sidelink BSR MAC CE transmitted by the terminal, recognizes the L TE sidelink BSR MAC CE, and delivers it to the L TE base station unit via the internal interface.

It should be noted that, when the NR base station unit may not allocate L TE sidelink resources, the NR base station unit needs to send the L TE sidelink BSR MAC CE to the L TE base station unit.

Step S25, L TE base station unit receives L TE sidelink BSR MAC CE, and allocates L TE sidelink transmission resource to the terminal on L TE Uu interface.

Step S26, receiving L TE base station unit, performing data transmission on the allocated L TE sidelink resource on the L TE sidelink resource allocated by the L TE Uu interface.

Case three, the terminal sends L TE sidelink BSR MAC CE to the NR base station, receives L TE sidelink resource on L TE base station (the terminal is connected to L TE base station and NR base station through DC)

As shown in fig. 17, the specific implementation flow is as follows:

step S31, the terminal generates L TE sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

When the ue is a periodic BSR or a padding BSR, the ue does not send a scheduling request but waits for resource allocation of an NR Uu port.

Step S32, NR base station distributes NR Uu resource for terminal;

Step S33, sending L TE sidelink BSR MAC CE to the NR base station;

specifically, the terminal sends L TE sidelink BSR MAC CE on NR Uu resources allocated to the terminal by the NR base station, where the L TE sidelink BSR MAC CE adopts a MAC sub-PDU structure of NR MAC PDU, uses NR MAC sub-header format, and adopts a L CID value different from that used for other NR transmission, or adopts L CID value of NR sidelink BSR, but uses R bit to indicate that the corresponding MAC CE is L TE sidelink BSR MAC CE.

Step S34, the NR base station receives the L TE sidelink BSR MAC CE sent by the terminal, recognizes the L TE sidelink BSR MAC CE, and hands it over to the L TE base station through the inter-base station interface (X2 interface or Xn interface);

it should be noted that, when the NR base station may not allocate L TE sidelink resources, the NR base station needs to send the L TE sidelink BSR MAC CE to the L TE base station.

Step S35, L TE base station received L TE sidelink BSR MAC CE, at L TE Uu interface, allocating L TE sidelink transmission resource for the terminal.

Step S36, receiving L TE sidelink resource allocated by the L TE base station on the L TE Uu interface, and performing data transmission on the allocated L TE sidelink resource.

Case four, the terminal transmits NR sidelink BSR MAC CE, &lttt translation = L "&gtt L &ltt/t &gtt TE PDU on L TE MAC PDU of L TE Uu interface to allocate NR sidelink resources to the TE base station

As shown in fig. 18, the specific implementation flow is as follows:

step S41, the terminal generates an NR sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

it should be noted that this step is an optional step, and if the triggered BSR can trigger a scheduling request, the scheduling request is triggered;

if the triggered BSR may not trigger a scheduling request, the resource allocation of the TE Uu interface is waited L.

It should be further noted that the type, triggering mechanism and triggering of the scheduling request SR of the NR sidelink BSR are not specified at present, but it is expected that there are still multiple BSR types and partial BSR types (e.g. regular BSR) similar to L TE that can trigger the SR, the L TE PUCCH resource for transmitting the SR may be configured by the base station independently for the SR triggered by the NR sidelink BSR for the terminal, or the same resource as the SR triggered by the L TE sidelink BSR, or the same PUCCH resource as the SR triggered by the BSR on the L TE Uu interface.

Step S42, L TE base station allocates L TE Uu resource for the terminal;

it should be noted that, when the L TE base station receives the scheduling request sent by the terminal, L TE Uu resources are allocated to the terminal, or, the L TE base station directly allocates L TE Uu resources to the terminal.

Step S43, sending NR sidelink BSR MAC CE to L TE base station;

specifically, the terminal transmits NR sidelink BSRMAC CE on L TE Uu resources allocated by L TE base station for the terminal, where the NR sidelink BSRMAC CE adopts L0 TE MAC PDU structure, uses L TE MAC subheader format, and adopts L CID value different from that used for other L TE transmission, or adopts L CID value of L TE sidelink BSR, but uses R bit to indicate that the corresponding MAC CE is NR sidelink BSR MAC CE, when organizing data and MAC CE into MAC PDU, the priority level of NR sidelink BSR MAC CE may be lower than that of L TE sidelink BSR MAC CE, or when the terminal adopts resource allocation mode of network scheduling and has L TE sidelink BSR trigger, the priority level of NR sidelink BSR MAC CE may be higher than that of L TE sidelink BSR MAC CE.

Fig. 19 and 20 are two examples of an L TE Uu interface MAC PDU containing a L TE sidelink BSR MAC CE and an NR sidelink BSR MAC CE, respectively, where, as shown in fig. 19, L TE sidelink BSR MAC CE and NR sidelink BSR MAC CE are distinguished by L CID value, as shown in fig. 20, by R bit, in which case the values of L CID1 and L CID2 in fig. 20 are the same, L TE sidelink BSR MAC CE in fig. 19 and 20 is a format containing an odd number of buffer sizes, NR sidelink MAC CE format is not yet specified by the current protocol, but is a possible construction example, logical channel priority order in fig. 19 and 20 is L TE sidelink MAC CE is higher than NRsidelink BSR MAC CE, and if, two MAC CEs in fig. 19 and 20 and their front and back order of MAC header interchange is required, further, if a MAC PDU and a MAC PDU containing a MAC resource is not enough to be placed in front of a MAC PDU, a MAC PDU and a MAC PDU can be placed in front of a MAC PDU, and if a MAC PDU can not contain a MAC resource is not enough to be allocated to a MAC interface with a low priority.

Step S44, L TE base station receives NR sidelink BSR MAC CE sent by terminal, and allocates sidelink transmission resource for terminal;

and step S45, the terminal transmits data on the allocated NR sidelink resource.

In case five, the terminal sends NR sidelink BSR MAC CE on L TE MAC PDU of L TE Uu interface, and NR base station unit allocates NR sidelink resource (L TE base station unit and NR base station unit co-deployed)

Step S51, the terminal generates an NR sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

Step S52, L TE base station unit allocates L TE Uu resource for terminal;

it should be noted that, when the L TE base station unit receives the scheduling request sent by the terminal, L TE Uu resources are allocated to the terminal, or, the L TE base station unit directly allocates L TE Uu resources to the terminal.

Step S53, sending NR sidelink BSR MAC CE to L TE base station unit;

specifically, the terminal transmits NR sidelink BSR MAC CE on L TE Uu resources allocated by L TE base station unit for the terminal, where the NR sidelink BSR MAC CE adopts L0 TE MAC PDU structure, uses L TE MAC subheader format, and adopts L CID value different from that used for other L TE transmission, or adopts L CID value of L TE sidelink BSR, but uses R bit to indicate that the corresponding MAC CE is NR sidelink BSR MAC CE, when organizing data and MAC CE into MAC PDU, the priority level of the NR sidelink BSR MAC CE may be lower than that of L TE sidelink BSR MAC CE, or when the terminal adopts resource allocation mode of network scheduling and has L TE sidelink BSR trigger, the priority level of the NR sidelink BSR MAC CE may be higher than that of the L TE sidelink BSR MAC CE.

Steps S54, L TE base station unit receives NR sidelink BSR MAC CE transmitted by the terminal, recognizes the NR sidelink BSR MAC CE, and delivers it to the NR base station unit through the internal interface.

It should be noted that, when the L TE base unit may not allocate the NR sidelink resource, the L TE base unit needs to send the NR sidelink BSR MAC CE to the NR base unit.

Step S55, the NR sidelink BSR MAC CE received by the NR base station unit allocates an NR sidelink transmission resource to the terminal on the NR Uu interface.

Step S56, receiving the NR sidelink resource allocated by the NR base station unit on the NR Uu interface, and performing data transmission on the allocated NRsidelink resource.

Sixth, the terminal sends NR sidelink BSR MAC CE on L TE MAC PDU of L TE Uu interface, and the NR base station allocates NR sidelink resource (the terminal is connected to L TE base station and NR base station simultaneously through DC)

Step S61, the terminal generates an NR sidelink BSR to trigger a Scheduling Request (SR) on an NR Uu interface;

Step S62, L TE base station allocates L TE Uu resource for the terminal;

Step S63, sending NR sidelink BSR MAC CE to L TE base station;

Step S64, L TE base station receives NR sidelink BSR MAC CE sent by the terminal, identifies NR sidelink BSR MAC CE, and delivers it to the NR base station through the inter-base station interface (X2 interface or Xn interface).

It should be noted that, when the L TE base station may not allocate the NR sidelink resource, the L TE base station needs to send the NRsidelink BSR MAC CE to the NR base station.

Step S65, the NR sidelink BSR MAC CE received by the NR base station allocates an NRsidelink transmission resource to the terminal on the NR Uu interface.

Step S66, receiving the NR sidelink resource allocated by the NR base station on the NR Uu interface, and performing data transmission on the allocated NRsidelink resource.

It should be noted that, the embodiment of the present invention solves the problem that the prior art cannot support the reporting of the sidelink BSR under the condition that the RATs of the Uu interface and the sidelink interface are different, so as to fully utilize the resources of different RATs and implement the reasonable allocation of the sidelink interface resources.

As shown in fig. 23, a method for receiving a buffer status report according to an embodiment of the present invention is applied to a network device of a first access network technology RAT, and includes:

231, receiving a buffer status report BSR of a direct communication link of a second RAT reported by a terminal through an interface between the terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

In the above embodiments, all descriptions regarding the network device are applied to the embodiment of the method for receiving the buffer status report applied to the network device of the first RAT, and the same technical effects as those of the embodiment can be achieved.

As shown in fig. 24, a resource allocation method according to an embodiment of the present invention is applied to a network device of a second access network technology RAT, and includes:

step 241, receiving a buffer status report medium access control element BSR MAC CE of a direct communication link of a second RAT sent by a network device of a first RAT;

step 242, according to the BSR MAC CE of the direct communication link of the second RAT, sending fourth resource allocation information of the direct communication link of the second RAT to the terminal.

In the above embodiments, all the descriptions about the network device are applied to the embodiment of the resource allocation method applied to the network device of the second RAT, and the same technical effects as those of the embodiment can be achieved.

As shown in fig. 25, an embodiment of the present invention provides a terminal 250, including:

a reporting module 251, configured to report a buffer status report BSR of a direct communication link of a second RAT to a network device of a first RAT through an interface between a terminal of the first access network technology RAT and a network;

wherein the first RAT is different from the second RAT.

Optionally, the first RAT is a new air interface NR, the second RAT is long term evolution L TE, and the reporting module 251 is configured to:

Optionally, the first RAT is long term evolution L TE, the second RAT is a new air interface NR, and the reporting module 251 is configured to:

Optionally, before the reporting module 251 reports the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT through an interface between the terminal of the first access network technology RAT and the network, the method further includes:

a scheduling request sending module, configured to send, when a trigger condition of a BSR of a direct communication link of a second RAT is met, a scheduling request on an interface between a terminal of the first RAT and a network to a network device of the first RAT if the BSR of the direct communication link of the second RAT can trigger the scheduling request;

a first information receiving module, configured to receive first resource allocation information of an interface between a terminal of the first RAT and a network, where the first resource allocation information is sent by a network device of the first RAT;

the reporting module 251 is configured to:

an execution module, configured to, when a trigger condition of a BSR of a direct communication link of a second RAT is satisfied, wait for second resource allocation information of an interface between a terminal of the first RAT and a network if the BSR of the direct communication link of the second RAT cannot trigger a scheduling request;

the reporting module 251 is configured to:

Optionally, after the reporting module 251 reports the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT through an interface between the terminal of the first access network technology RAT and the network, the method further includes:

a second information receiving module, configured to receive third resource allocation information of a direct communication link of the second RAT, where the third resource allocation information is sent by a network device of the first RAT;

and the first transmission module is used for transmitting data according to the third resource allocation information.

a third information receiving module, configured to receive fourth resource allocation information of a direct communication link of a second RAT, where the fourth resource allocation information is sent by a network device of the second RAT;

and the second transmission module is used for transmitting data according to the fourth resource allocation information.

It should be noted that the terminal embodiment is a terminal corresponding to the above method embodiments one to one, and all implementation manners in the above method embodiments are applicable to the terminal embodiment, and the same technical effect can be achieved.

As shown in fig. 26, an embodiment of the present invention further provides a terminal 260, which includes a processor 261, a transceiver 262, a memory 263, and a program stored in the memory 263 and capable of running on the processor 261; the transceiver 262 is connected to the processor 261 and the memory 263 through a bus interface, wherein the processor 261 is configured to read a program in the memory and execute the following processes:

reporting a Buffer Status Report (BSR) of a direct communication link of a second RAT to a network device of a first access network technology (RAT) through the transceiver 262 through an interface between a terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

It should be noted that in fig. 26, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 261 and various circuits of memory represented by memory 263 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 262 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 264 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 261 is responsible for managing a bus architecture and general processing, and the memory 263 may store data used by the processor 261 in performing operations.

the processor implements the following steps when executing the program:

receiving, by the transceiver 262, third resource allocation information for a direct communication link of the second RAT transmitted by a network device of the first RAT;

and transmitting data according to the third resource allocation information.

receiving, by the transceiver 262, fourth resource allocation information for a direct communication link of a second RAT sent by a network device of the second RAT;

and transmitting data according to the fourth resource allocation information.

The embodiment of the present invention further 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 of the method for reporting a buffer status report applied to a terminal.

As shown in fig. 27, an embodiment of the present invention provides a network device 270, where the network device is a network device of a first access network technology RAT, and the network device includes:

a first receiving module 271, configured to receive a buffer status report BSR of a direct communication link of a second RAT, which is reported by a terminal through an interface between the terminal of the first RAT and a network;

wherein the first RAT is different from the second RAT.

Optionally, before the first receiving module 271 receives a buffer status report BSR of a direct communication link of a second RAT reported by a terminal of a first RAT through an interface between the terminal of the first RAT and a network, the method further includes:

a scheduling request receiving module, configured to receive a scheduling request on an interface between a terminal of the first RAT and a network, where the scheduling request is sent by the terminal;

and the first information sending module is used for sending first resource allocation information of an interface between the terminal of the first RAT and the network to the terminal.

and the second information sending module is used for sending second resource allocation information of an interface between the terminal of the first RAT and the network to the terminal.

Optionally, after the first receiving module 271 receives a buffer status report BSR of a direct communication link of a second RAT reported by a terminal of a first RAT through an interface between the terminal of the first RAT and a network, the method further includes:

a third information sending module, configured to send third resource allocation information of the direct communication link of the second RAT if the network device of the first RAT is able to allocate the direct communication link resource of the second RAT to the terminal.

a fourth information sending module, configured to send, if the network device of the first RAT cannot allocate the direct communication link resource of the second RAT to the terminal, a buffer status report medium access control unit BSR MAC CE of the direct communication link of the second RAT to the network device of the second RAT, so that the network device of the second RAT sends, to the terminal, fourth resource allocation information of the direct communication link of the second RAT.

It should be noted that the network device embodiment is a network device corresponding to the above method embodiment one to one, and all implementation manners in the above method embodiment are applicable to the network device embodiment, and the same technical effect can be achieved.

As shown in fig. 28, an embodiment of the present invention further provides a network device 280, which is a network device of a first access network technology RAT, and includes a processor 281, a transceiver 282, a memory 283 and a program stored in the memory 283 and operable on the processor 281; the transceiver 282 is connected to the processor 281 and the memory 283 through a bus interface, wherein the processor 281 is configured to read a program in the memory and execute the following processes:

receiving, by the transceiver 282, a buffer status report BSR of a direct communication link of a second RAT reported by a terminal of a first RAT through an inter-network interface;

wherein the first RAT is different from the second RAT.

It should be noted that in FIG. 28, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 281 and various circuits of memory represented by memory 283 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 282 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 281 is responsible for managing the bus architecture and general processing for different terminals, and the memory 283 may store data used by the processor 281 in performing operations.

An embodiment of the present invention further 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 of the method for receiving a cache status report applied to a network device.

As shown in fig. 29, an embodiment of the present invention provides a network device 290, where the network device is a network device of a second access network technology RAT, and the network device includes:

a second receiving module 291, configured to receive a buffer status report medium access control unit BSR MAC CE of a direct communication link of a second RAT, where the buffer status report medium access control unit BSR MAC CE is sent by a network device of a first RAT;

a sending module 292, configured to send, according to the BSR MAC CE of the direct communication link of the second RAT, fourth resource allocation information of the direct communication link of the second RAT to the terminal.

As shown in fig. 30, an embodiment of the present invention further provides a network device 300, which is a network device of a second access network technology RAT, and includes a processor 301, a transceiver 302, a memory 303, and a program stored on the memory 303 and operable on the processor 301; the transceiver 302 is connected to the processor 301 and the memory 303 through a bus interface, wherein the processor 301 is configured to read a program in the memory and execute the following processes:

receiving 302, by a transceiver, a buffer status report medium access control element, BSR MAC CE, of a direct communication link of a second RAT transmitted by a network device of a first RAT;

It should be noted that in fig. 30, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 301 and various circuits of memory represented by memory 303 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 302 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 301 is responsible for managing the bus architecture and general processing for different terminals, and the memory 303 may store data used by the processor 301 in performing operations.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the resource allocation method applied to the network device.

While the preferred embodiments of the present invention have been described, 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 following claims.

Claims

1. A reporting method of a buffer status report is applied to a terminal, and is characterized by comprising the following steps:

wherein the first RAT is different from the second RAT.

2. The method according to claim 1, wherein the buffer status report MAC CE of the direct communication link of the second RAT is separately transmitted on an interface between the terminal of the first RAT and a network; or

3. The method according to claim 2, wherein when the BSR MAC CE of the direct communication link of the second RAT and the uplink data multiplexing of the interface between the terminal and the network of the first RAT are transmitted in one MAC pdu, the priority level of the BSR MAC CE of the direct communication link of the second RAT is lower than that of the BSR MAC CE of the direct communication link of the first RAT; or

4. The method of claim 1, wherein the buffer status report MAC CEs of the direct communication links of different RATs are differentiated by different MAC subheaders.

5. The reporting method of the buffer status report according to claim 4, wherein different logical channel identifier information is used to indicate BSR MAC CEs of direct communication links of different RATs; or

6. The method of claim 1, wherein buffer status report media access control elements (BSR MAC CEs) of direct communication links of different RATs are in independent formats.

7. The method of claim 1, wherein the first RAT is a new air interface NR, the second RAT is a Long term evolution L TE, and the reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT via the interface between the terminal of the first access network technology RAT and the network comprises:

8. The method for reporting a buffer status report according to claim 1, wherein the first RAT is lte L TE, the second RAT is new air interface NR, and reporting a buffer status report BSR of a direct communication link of the second RAT to a network device of the first RAT via an interface between a terminal of the first access network technology RAT and a network comprises:

9. The method of claim 1, wherein before reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT via the interface between the terminal of the first access network technology RAT and the network, the method further comprises:

10. The method of claim 1, wherein before reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT via the interface between the terminal of the first access network technology RAT and the network, the method further comprises:

11. The method of claim 1, wherein after reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT via the interface between the terminal of the first access network technology RAT and the network, the method further comprises:

and transmitting data according to the third resource allocation information.

12. The method of claim 1, wherein after reporting the buffer status report BSR of the direct communication link of the second RAT to the network device of the first RAT via the interface between the terminal of the first access network technology RAT and the network, the method further comprises:

and transmitting data according to the fourth resource allocation information.

13. A receiving method of a buffer status report is applied to a network device of a first access network technology (RAT), and is characterized by comprising the following steps:

wherein the first RAT is different from the second RAT.

14. The receiving method of the buffer status report according to claim 13, wherein the buffer status report medium access control unit BSR MAC CE of the direct communication link of the second RAT is separately transmitted on the interface between the terminal and the network of the first RAT; or

15. The receiving method of the buffer status report according to claim 14, wherein when the BSR MAC CE of the direct communication link of the second RAT is transmitted in one MAC PDU together with the uplink data multiplexing of the interface between the terminal and the network of the first RAT, the BSR MAC CE of the direct communication link of the second RAT has a lower priority level than the BSR MAC CE of the direct communication link of the first RAT; or

16. The method of receiving buffer status report according to claim 13, wherein the buffer status report media access control elements BSR MAC CEs of the direct communication links of different RATs are differentiated by using different MAC subheaders.

17. The receiving method of the buffer status report according to claim 16, wherein different logical channel identifier information is used to indicate BSR MAC CEs of direct communication links of different RATs; or

18. The method for receiving buffer status report according to claim 13, wherein the buffer status report media access control elements BSR MAC CEs of the direct communication links of different RATs are in independent formats.

19. The receiving method of the buffer status report according to claim 13, further comprising, before the buffer status report BSR of the direct communication link of the second RAT reported by the receiving terminal through the interface between the terminal of the first RAT and the network, the steps of:

20. The receiving method of the buffer status report according to claim 13, further comprising, before the buffer status report BSR of the direct communication link of the second RAT reported by the receiving terminal through the interface between the terminal of the first RAT and the network, the steps of:

21. The receiving method of the buffer status report according to claim 13, further comprising, after the buffer status report BSR of the direct communication link of the second RAT is reported by the receiving terminal through the terminal of the first RAT and the network interface:

22. The receiving method of the buffer status report according to claim 13, further comprising, after the buffer status report BSR of the direct communication link of the second RAT is reported by the receiving terminal through the terminal of the first RAT and the network interface:

if the network device of the first RAT cannot allocate the direct communication link resource of the second RAT to the terminal, sending a buffer status report media access control unit BSR MAC CE of the direct communication link of the second RAT to the network device of the second RAT, so that the network device of the second RAT sends fourth resource allocation information of the direct communication link of the second RAT to the terminal.

23. A resource allocation method applied to a network device of a second access network technology (RAT) is characterized by comprising the following steps:

24. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:

wherein the first RAT is different from the second RAT.

25. The terminal of claim 24, wherein a buffer status report medium access control element (BSR MAC CE) of the direct communication link of the second RAT is separately transmitted over a terminal-to-network interface of the first RAT; or

26. The terminal of claim 25, wherein when the BSRMAC CE of the direct communication link of the second RAT is transmitted in one MAC PDU with the uplink data multiplex of the terminal-to-network interface of the first RAT, the BSRMAC CE of the direct communication link of the second RAT has a lower priority level than the BSRMAC CE of the direct communication link of the first RAT; or

27. The terminal of claim 24, wherein buffer status reporting media access control elements (BSR MAC CEs) of direct communication links of different RATs are differentiated using different MAC subheaders.

28. The terminal of claim 27, wherein different logical channel identity information is used to indicate BSR MAC CEs of direct communication links of different RATs; or

29. The terminal of claim 24, wherein buffer status reporting media access control elements (BSR MAC CEs) for direct communication links of different RATs are in independent formats.

30. The terminal of claim 24, wherein the first RAT is a new air interface (NR) and the second RAT is Long term evolution (L TE), and wherein the processor performs the steps of:

31. The terminal of claim 24, wherein the first RAT is Long term evolution L TE, and the second RAT is a New air interface NR, and wherein the processor implements the following steps when executing the program:

32. The terminal of claim 24, wherein the processor, when executing the program, further performs the steps of:

the processor implements the following steps when executing the program:

33. The terminal of claim 24, wherein the processor, when executing the program, further performs the steps of:

the processor implements the following steps when executing the program:

34. The terminal of claim 24, wherein the processor, when executing the program, further performs the steps of:

and transmitting data according to the third resource allocation information.

35. The terminal of claim 24, wherein the processor, when executing the program, further performs the steps of:

and transmitting data according to the fourth resource allocation information.

36. A network device of a first access network technology, RAT, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:

wherein the first RAT is different from the second RAT.

37. The network device of claim 36, wherein the processor, when executing the program, further performs the steps of:

38. The network device of claim 36, wherein the processor, when executing the program, further performs the steps of:

39. The network device of claim 36, wherein the processor, when executing the program, further performs the steps of:

40. The network device of claim 36, wherein the processor, when executing the program, further performs the steps of:

41. A network device of a second access network technology, RAT, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:

42. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the method for reporting a buffer status report according to any one of claims 1 to 12, the method for receiving a buffer status report according to any one of claims 13 to 22, or the method for allocating resources according to claim 23.

43. A terminal, comprising:

wherein the first RAT is different from the second RAT.

44. A network device of a first access network technology, RAT, comprising:

wherein the first RAT is different from the second RAT.

45. A network device of a second access network technology, RAT, comprising: