TWI681654B - Method and equipment for reporting cache status report - Google Patents

Abstract

Embodiments of the present invention provide a method and device for reporting a buffer status report, to solve the problem that the BSR MAC CE format in the prior art cannot meet the requirements of 5G NR. In the embodiment of the present invention, the terminal generates indication information according to the logical channel group with the amount of cached data, and places the cached data amount of at least one logical channel group that can be reported currently in the BSR MAC CE in the order indicated by the indication information, and Place the instruction information in the BSR MAC CE. Since the indication information can be used to indicate the logical channel group corresponding to the information of the buffered data in the BSR MAC CE, it can meet the 5G NR requirements.

Description

Method and equipment for reporting cache status report

The invention belongs to the technical field of wireless communication, and particularly relates to a method and a device for reporting a buffer status report.

In a Long Term Evolution (LTE) system, each radio bearer (RB) corresponds to a logical channel, and each logical channel requires a corresponding logical channel ID (LCID) to identify it.

The Media Access Control (MAC) layer has a logical channel multiplexing function, which organizes data of multiple logical channels into a MAC protocol data unit (Protocol Data Unit, PDU) and transmits it to the physical layer for transmission.

The overall structure of the MAC PDU is shown in FIG. 1A. In the schematic diagram of the structure of the MAC PDU, the MAC PDU includes a MAC header, 0 or more MAC service data units (SDU), and 0 or more MAC control units (Control Element, CE) and optional padding bits.

The MAC PDU header includes one or more sub-headers, and each MAC sub-header corresponds to a MAC SDU, MAC CE, or padding.

The MAC subheader corresponding to the MAC SDU uses the 7bit L domain as shown in Figure 1B. Use 15bit L domain as shown in Figure 1C.

Each MAC sub-header contains different fields and specific meanings. Common fields in the MAC sub-header include: LCID: the type or padding of the logical channel entity or MAC control unit used to identify the MAC SDU; E (extended field): Indicate whether there is a subsequent field behind the MAC subheader in the MAC header; R (reserved bit): used for subsequent application expansion, the size is 2bits, because some embodiments of the present invention will use the reserved bit, so it is used In the reserved bit embodiment, the bit can be named with different names as needed, such as the extended bit, etc.; "F2" and "F" (format field): used to jointly indicate the length of the L field; L (length Indication field): used to indicate the length of the MAC SDU or MAC control unit, in bytes.

Among them, there are two formats of Buffer Status Report (BSR) MAC CE in LTE: BSR MAC CE reporting only one logical channel group (LCG) and reporting all 4 logical channel groups BSR MAC CE.

In LTE, the number of LCIDs occupied by logical channels is not large. Since the number of LCIDs is sufficient, each type of MAC CE will occupy one LCID.

In 5G New Radio (NR), multiple service types have been introduced. The number of logical channels and the number of logical channel groups have been greatly increased. The format of LTE's BSR MAC CE is no longer applicable.

In summary, the current BSR MAC CE format cannot meet the requirements of 5G NR.

Embodiments of the present invention provide a method and device for reporting a buffer status report, to solve the problem that the BSR MAC CE format in the prior art cannot meet the requirements of 5G NR.

An embodiment of the present invention provides a method for reporting a cache status report. The method includes: the terminal generates indication information according to a logical channel group with a buffered data amount; the terminal reports at least one logical channel that can currently report in the order indicated by the indication information The amount of cache data of the group is placed in the BSR MAC CE of the buffer status report media access control unit, and the indication information is placed in the BSR MAC CE; the terminal reports the buffer status report to the network side device.

An embodiment of the present invention provides a method for reporting a buffer status report. The method includes: a network side device receives a buffer status report reported by a terminal; and the network side device determines the BSR MAC CE of the buffer status report according to the indication information of the buffer status report The corresponding logical channel group carrying the amount of cached data in it, wherein the indication information is generated by the terminal according to the logical channel group with the amount of cached data.

An embodiment of the present invention provides a terminal for reporting a buffer status report. The terminal includes a processor, a transceiver, and a memory, wherein: the processor is used to send and receive data by controlling the transceiver, and read the memory Program, perform the following process: Generate indication information according to the logical channel group with the amount of cached data; place the amount of cached data of at least one logical channel group that can be reported currently in the cache status report media access control unit BSR MAC CE in the order indicated by the indication information , And put the instruction information in the BSR MAC CE; control the transceiver to report the buffer status report to the network side device; the transceiver is used to receive and send data.

An embodiment of the present invention provides a network-side device that reports a cache status report. The network-side device includes a processor, a transceiver, and a memory, wherein: the processor is used to send and receive data through the transceiver and read the memory The program in the body performs the following processes: control the transceiver to receive the buffer status report reported by the terminal; according to the indication information of the buffer status report, determine the corresponding logical channel group that carries the amount of cache data in the BSR MAC CE of the buffer status report, where The indication information is generated by the terminal according to the logical channel group with the amount of buffered data; the transceiver is used to receive and send data.

An embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, steps of a method such as a terminal or a network-side device are implemented.

In the embodiment of the present invention, the terminal generates indication information according to the logical channel group with the amount of cached data, places the cached data amount of at least one logical channel group that can be reported currently in the BSR MAC CE in the order indicated by the indication information, and sets the indication The information is placed in the BSR MAC CE. Since the indication information can be used to indicate the logical channel group corresponding to the information of the buffered data in the BSR MAC CE, it can meet the 5G NR requirements.

1200~1202, 1300~1301‧‧‧ steps

10‧‧‧terminal

20‧‧‧Network side equipment

800‧‧‧Generation module

801‧‧‧Processing module

802‧‧‧Reporting module

900‧‧‧Receiving module

901‧‧‧ Confirm module

1000, 1100‧‧‧ bus

1001, 1101‧‧‧ processor

1002, 1102‧‧‧ transceiver

1003, 1103‧‧‧Bus interface

1004, 1104‧‧‧ memory

1005‧‧‧User interface

1105‧‧‧ Antenna

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings based on these drawings without paying progressive labor.

Figure 1A is a schematic diagram of the MAC PDU structure in the background technology; FIG. 1B is a schematic diagram of the MAC subheader structure corresponding to the 7-bit L domain MAC SDU in the background technology; FIG. 1C is a schematic diagram of the MAC subheader structure corresponding to the 15-bit L domain MAC SDU in the background technology Figure 2 is a schematic structural diagram of a system for reporting a cache status report according to an embodiment of the present invention; FIG. 3A is a schematic diagram of a first BSR MAC CE according to an embodiment of the present invention; FIG. 3B is a schematic diagram of a second BSR MAC CE according to an embodiment of the present invention; FIG. 3C FIG. 4A is a schematic diagram of a first MAC subheader according to an embodiment of the present invention; FIG. 4B is a schematic diagram of a second MAC subheader according to an embodiment of the present invention; FIG. 4C is an embodiment of the present invention A schematic diagram of the third MAC subheader; FIG. 5A is a schematic diagram of the first BSR MAC CE in Embodiment 1 of the present invention; FIG. 5B is a schematic diagram of the second BSR MAC CE in Embodiment 1 of the present invention; 6A is a schematic diagram of the first BSR MAC CE in Embodiment 3 of the present invention; FIG. 6B is a schematic diagram of the second BSR MAC CE in Embodiment 3 of the present invention; FIG. 7A is a schematic diagram of the first BSR MAC CE in Embodiment 4 of the present invention 7B is a schematic diagram of the second BSR MAC CE in Embodiment 4 of the present invention; FIG. 8 is a schematic structural diagram of the first terminal of the embodiment of the present invention; FIG. 9 is a schematic structural diagram of the first network-side device of the embodiment of the present invention; 10 is a schematic structural diagram of a second terminal according to an embodiment of the present invention; FIG. 11 is a schematic structural diagram of a second network-side device according to an embodiment of the present invention; FIG. 12 is a schematic flowchart of a method for reporting a buffer status report by a terminal according to an embodiment of the present invention; 13 is a schematic flowchart of a method for a network side device to receive a buffer status report according to an embodiment of the present invention.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention rather than all the embodiments . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making progressive labor are within the protection scope of the present invention.

As shown in FIG. 2, the system for reporting a cache status report according to an embodiment of the present invention includes: a terminal 10 for generating indication information according to a logical channel group with the amount of cached data; The amount of cached data in a logical channel group, Put it in the cache status report media access control control unit BSR MAC CE, and put the indication information in the BSR MAC CE; report the cache status report to the network side device; the network side device 20, used to receive the report of the terminal Cache status report; according to the indication information of the cache status report, determine the corresponding logical channel group that carries the amount of cached data in the BSR MAC CE of the cache status report, where the indication information is generated by the terminal according to the logical channel group with information about the amount of cached data .

In the embodiment of the present invention, the terminal generates indication information according to the logical channel group with the amount of cached data, and according to the order indicated by the indication information, places the amount of cached data of at least one logical channel group that can be reported currently in the BSR MAC CE, and places The instruction information is placed in the BSR MAC CE. Since the indication information can be used to indicate the logical channel group corresponding to the amount of cached data in the BSR MAC CE, the 5G NR requirement can be met, the efficiency of cache reporting is further improved, and resources are saved.

Optionally, the terminal and the network side can determine the length of the BSR MAC CE according to the number of logical channel groups and logical channel group indication information required to report the amount of cached data. Therefore, the length indicator may not be carried in the MAC subheader. Of course, the length of the BSR MAC CE is not fixed.

In other words, the number of logical channel groups that need to report the amount of cached data is different, and the length of the BSR MAC CE is different, but the length indication field L in the MAC subheader is not required to indicate the length of the variable-length BSR MAC CE.

In the embodiment of the present invention, the buffer data amount of a logical channel group is reported as Buffer Size, taking 8bit and 6bit as examples. In a specific implementation, the Buffer Size will only be one of 8bit or 6bit, and it is impossible to appear at the same time. Take 8bit Buffer Size as an example, if you need to report the logic of the amount of buffer data If the number of channel groups is K, the length of BSR MAC CE is K+1.

There are two types of BSR MAC CE in this embodiment of the present invention, and each has a different format: a complete BSR MAC CE and a truncated BSR MAC CE. Introduced separately below.

The first type: complete BSR MAC CE.

In this way, the terminal places the amount of buffered data of all logical channel groups that can be reported currently in the BSR MAC CE in the order indicated by the indication information.

In the implementation, bitmap (bitmap) can be used as indication information.

If the indication information is a bitmap, each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group. The maximum number of logical channel groups is 8. You can use 1byte bitmap as logical channel group indication information.

Assuming that for a specific logical channel group, 1 means report, 0 means no report, all logical channel groups that currently have cache data and need to be cached and reported are logical channel group 0, logical channel group 1, and logical channel group 5, The bitmap is 11000100.

The terminal places the corresponding amount of cached data in the BSR MAC CE in the order of logical channel group 0, logical channel group 1, and logical channel group 5.

Correspondingly, if the bitmap received by the network-side device is 11000100, it is known that the BSR MAC CE carries the amount of cached data of logical channel group 0, logical channel group 1, and logical channel group 5.

Another way to implement a complete BSR MAC CE is if all the current logical channel groups that can be reported are the maximum number of logical channel groups, that is, all 8 logical channels The channel group must be buffered and reported, then the indication information may not appear in the BSR MAC CE in an implicit manner.

For example, as shown in FIG. 3A, there are a total of 8 logical channel groups, and all the logical channel groups that can be reported currently are these 8, then the cache data volume of these 8 logical channel groups are placed in the BSR MAC CE; the corresponding If there is no indication information in the BSR MAC CE received by the network-side device, it is known that the BSR MAC CE includes the amount of cached data of all logical channel groups.

Of course, it is also possible to carry instruction information in this case.

For a complete BSR MAC CE, the length indication field of the BSR MAC CE may be carried in the corresponding MAC CE subheader.

On the other hand, because the value of the logical channel group indication information bit indicates whether to report the cached data amount of the corresponding logical channel group, the number of bits occupied by the cached data amount of each logical channel group is fixed, then the network side The device can determine the number of buffered data in the logical channel group included in the BSR MAC CE according to the logical channel group indication information, so the network side device can determine the length of the BSR MAC CE without carrying a length indication field separately, so the MAC sub The length indicator field may not be carried in the header.

The second type: truncated BSR MAC CE.

In this way, the terminal places the amount of cached data of some logical channel groups that can be reported currently in the BSR MAC CE in the order indicated by the indication information.

In the implementation, bitmap can be used as instruction information.

If the indication information is a bitmap, each bit in the bitmap corresponds to a logic The channel group is edited, and the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group or the value on the bit indicates whether the corresponding logical channel group has the amount of cached data.

If the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group, the maximum number of logical channel groups is 8, you can use 1byte bitmap to indicate the logical channel group, 1 means report, 0 means not report, Currently all logical channel groups that can be reported are logical channel group 0, logical channel group 1 and logical channel group 5. The terminal reports logical channel group 0 and logical according to the logical channel group order and the size of the BSR MAC CE that the current resource can accommodate. For the amount of cached data in channel group 1, the bitmap is 11000000.

The terminal places the corresponding amount of cached data in the BSR MAC CE in the order of logical channel group 0 and logical channel group 1.

Correspondingly, if the bitmap received by the network-side device is 1100000, it is known that the BSR MAC CE carries the amount of cached data of logical channel group 0 and logical channel group 1.

If the value on the bit indicates whether the corresponding logical channel group has cached data, the maximum number of logical channel groups is 8, you can use 1byte bitmap to indicate the logical channel group, 1 means there is cached data, 0 means no cached data , The logical channel group with the amount of cached data in the terminal is logical channel group 0, logical channel group 1, logical channel group 2, and logical channel group 3. However, the logical channel groups that can report the amount of cached data are logical channel group 0 and logical Channel group 1. In this example, the bitmap is 11110000, but in the truncated BSR MAC CE, only the amount of cache data of logical channel group 0 and logical channel group 1 is reported.

The terminal places the corresponding amount of cached data in the BSR MAC CE in the order of logical channel group 0 and logical channel group 1.

Correspondingly, if the bitmap received by the network-side device is 11110000, it is known that the logical channel group 0, logical channel group 1, logical channel group 2, and logical channel group 3 have the amount of cached data. Later, when analyzing the BSR MAC CE, there are two The amount of cache data of each logical channel group, you know that the BSR MAC CE includes the amount of cache data of logical channel group 0 and logical channel group 1, and you can also know that the terminal also has the cache data of logical channel group 2 and logical channel group 3. The amount was not reported.

For the truncated BSR MAC CE, the length indication field of the BSR MAC CE may be carried in the corresponding MAC CE subheader.

On the other hand, the truncated BSR MAC CE is reported as a padding BSR. The network-side device determines the length of the MAC sub-PDU (also called MAC sub-PDU) composed of the BSR MAC CE and the MAC sub-header corresponding to the BSR MAC CE according to the length of the MAC PDU and the length of the MAC sub-PDU composed of other loads. Other loads include MAC SDU and/or other MAC CEs other than BSR MAC CE.

If other loads include MAC SDUs, the MAC sub-PDUs composed of other loads include MAC SDUs and their corresponding MAC sub-headers; if other loads include MAC CEs other than BSR MAC CE, then MAC sub-PDUs composed of other loads include In addition to BSR MAC CE, other MAC CEs and their corresponding MAC subheaders; if other loads include MAC SDU and other MAC CEs other than BSR MAC CE, then the MAC sub PDU composed of other loads includes MAC SDU and its corresponding MAC subheader, and includes other MAC CEs and their corresponding MAC subheaders besides BSR MAC CE.

For example, each MAC sub-PDU may include one MAC SDU and its corresponding MAC sub-header, and each MAC sub-PDU may include one other MAC CE and its corresponding MAC sub-header in addition to the BSR MAC CE.

If the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group, the length of the BSR MAC CE can also be obtained from the number of logical channel groups corresponding to the indication information.

Based on this, the network-side device can determine the length of the BSR MAC CE, and the MAC subheader does not need to carry the length indication field.

Specifically, if the network-side device determines the length of the MAC sub-PDU composed of the BSR MAC CE and the MAC sub-header corresponding to the BSR MAC CE according to the length of the MAC PDU and the length of the MAC sub-PDU composed of other loads, the network-side device passes the MAC PDU After the length minus the length of the MAC sub-PDU composed of other loads, the padding length can be determined.

The padding part does not need a length indication, and when the padding part is used to report the truncated BSR MAC CE, the length indication field may also be unnecessary.

Optionally, the capacity of a single logical channel in the BSR MAC CE (that is, buffer size) in the embodiment of the present invention is divided into 8bit (see FIG. 3B for details) and 6bit (see FIG. 3C for details).

Under 6bit buffer size, since the BSR MAC CE format is in bytes, except for buffer size, the remaining bits are reserved bits.

The embodiments of the present invention provide two BSR MAC CE formats. An optional method is to carry a BSR MAC CE corresponding to the BSR MAC CE to indicate the BSR MAC CE. Type of information.

Specifically, the terminal places the information indicating the type of BSR MAC CE in the MAC subheader corresponding to the BSR MAC CE; correspondingly, the network-side device determines the correspondence according to the information indicating the type of BSR MAC CE in the MAC subheader The type of BSR MAC CE.

Embodiments of the present invention provide a variety of ways for the MAC sub-header to contain information indicating the type of BSR MAC CE, which will be introduced separately below.

Method 1: The combination of the LCID field and the CE Type indicates the BSR MAC CE type: the LCID field indicates that the corresponding content is the BSR MAC CE, and the other field CE Type further indicates the specific type of the BSR MAC CE.

Specifically, the terminal indicates that the corresponding MAC CE is a BSR MAC CE through a LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicates the complete BSR MAC CE or truncated BSR MAC CE with the CE Type; correspondingly, the network side After determining that the corresponding MAC CE is the BSR MAC CE through the LCID field in the MAC subheader corresponding to the BSR MAC CE, the device determines that the BSR MAC CE type is full BSR MAC CE or truncated BSR MAC CE according to the CE Type.

Here, the first way is to use one LCID value to indicate that MAC CE is BSR MAC CE. The specific LCID value can be a few bits. For example, 1 can be used to indicate that MAC CE is BSR MAC CE, or 11 can be used to indicate that MAC CE is BSR MAC CE ; Further use CE Type to indicate whether the type of BSR MAC CE is complete or truncated. For example, you can use 1 to indicate completion and 0 to indicate truncation; you can also use 11 to indicate completeness and 10 to indicate truncation.

In implementation, it may be indicated by the entire CE Type, or by one or more bits in the CE Type.

As shown in FIG. 4A, the CE Type in the figure occupies 2 bits. According to the embodiment of the present invention, FIG. 4B may also be used, so that the CE Type occupies only 1 bit, and the other bit is a reserved bit.

The first way is actually to indicate whether it is a BSR by LCID and whether it is complete or truncated by CE Type.

For example, LCID=x, which means BSR, CE Type=1 means complete BSR, 0 means truncated BSR, then LCID=x in the MAC subheader corresponding to a complete BSR MAC CE, CE Type value is 1; one truncated The LCID value in the MAC subheader corresponding to the BSR MAC CE = x, and the CE Type value is 0.

It should be noted that the length indication field L in FIGS. 4A and 4B is redundant information, and for the purpose of uniform format, the length indication field may also be included. Since the inclusion of the length indicating field is not necessary, the dotted line in the figure indicates that the field may not exist.

Method 2: The LCID field indicates different BSR MAC CE types: specifically, different LCID values are used to indicate different types of BSR MAC CE.

Specifically, the terminal uses the two LCID values in the MAC subheader corresponding to the BSR MAC CE to indicate that the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE; correspondingly, the network-side device corresponds to the BSR MAC CE The LCID value in the MAC subheader determines the BSR MAC CE format.

The second way here is to use two LCID values to indicate that MAC CE is a complete BSR MAC CE or truncated BSR MAC CE, the specific LCID value can be a few bits, for example, you can use 1 to indicate that MAC CE is a complete BSR MAC CE, 0 to indicate that MAC CE is a truncated BSR MAC CE, or 11 to indicate MAC CE For the complete BSR MAC CE, 10 indicates that the MAC CE is a truncated BSR MAC CE.

For example, LCID=x means complete BSR MAC CE, LCID=y means truncated BSR MAC CE. Other bits can be used as reserved bits, as shown in Figure 4C.

The second way is actually to indicate whether the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE by the value of the LCID.

For example, LCID1 means complete BSR MAC CE, LCID2 means truncated BSR MAC CE, then the LCID value in the MAC subheader corresponding to a complete BSR MAC CE is LCID1; LCID in the MAC subheader corresponding to a truncated BSR MAC CE The value is LCID0.

It should be noted that the length indication field L in FIG. 4C is redundant information. For the purpose of uniform format, the length indication field may also be included. Since the inclusion of the length indicating field is not necessary, the dotted line in the figure indicates that the field may not exist.

A few examples are given below to explain the solution of the present invention.

Embodiment 1: Regular (regular) BSR or periodic (period) BSR reporting.

Terminal side: After triggering regular BSR or periodic BSR, the terminal side reports all cache information, that is, only the complete BSR can be reported.

The BSR MAC CE format is shown in Figure 3A. For example, if the terminal has the amount of cached data in logical channel group 0, logical channel group 2, logical channel group 4, and logical channel group 5, then The body's BSR MAC CE is shown in Figure 5A (8bit Buffer Size) or Figure 5B (6bit Buffer Size).

The format of the MAC subheader corresponding to the BSR MAC CE is one of FIG. 4A, FIG. 4B or FIG. 4C. The MAC subheader may have a length indication field L, or may not have a length indication field L.

Base station side: Receive the BSR report sent by the UE, determine the logical channel group with the buffered data amount from the first byte of the BSR MAC CE, and receive the subsequent buffered data amount report. According to this, the terminal performs subsequent uplink scheduling.

Embodiment 2: The padding BSR reports complete cache information.

Terminal side: If the terminal has remaining resources after organizing upstream data packets, there is still data to be transmitted in the terminal buffer, but the remaining resources are not enough to accommodate a new MAC SDU, it can organize padding BSR reporting, that is, BSR MAC CE is placed Report in padding.

When the remaining resources are enough to accommodate all BSR reports, the complete BSR MAC CE is reported in the padding BSR. The format of BSR MAC CE and its header is the same as that of Embodiment 1.

Base station side: After receiving the padding BSR sent by the terminal, the base station determines that there is still uplink data to be transmitted on the terminal side, and accordingly performs subsequent uplink scheduling on the terminal.

Embodiment 3: truncated (truncated) BSR reporting (bitmap indicates the logical channel group included in the currently truncated BSR MAC CE).

Terminal side: If the terminal has remaining resources after organizing the upstream data packets, there is still data to be transmitted in the terminal buffer, but when the remaining resources are not enough to accommodate a new MAC SDU, the terminal can organize padding BSR reporting. When the remaining resources are not enough to accommodate the BSR reporting of all logical channel groups, the BSR MAC CE is truncated and reported in the padding BSR.

In this embodiment, the bitmap only indicates that the current truncated BSR MAC CE contains Logical channel group. For example, for example, in the terminal cache, there are data of logical channel group 0, logical channel group 1, logical channel group 4, and logical channel group 5 to be sent, but there are currently only 3 bytes of remaining resources, then the BSR MAC CE is shown in Figure 6A or Figure 6B As shown.

The format of the MAC subheader corresponding to the truncated BSR MAC CE is one of FIG. 4A, FIG. 4B or FIG. 4C. The MAC subheader may have a length indication field L, or may not have a length indication field L.

Base station side: After receiving the truncated BSR MAC CE sent by the terminal, the base station determines that there is still uplink data to be transmitted on the terminal side, and can allocate more uplink transmission resources for the terminal than the truncated BSR MAC CE indicates the amount of buffered data .

Embodiment 4: truncated BSR reporting (bitmap indicates that all terminals have cached logical channel groups)

Terminal side: If the terminal has remaining resources after organizing the upstream data packets, there is still data to be transmitted in the terminal buffer, but when the remaining resources are not enough to accommodate a new MAC SDU, the terminal can organize padding BSR reporting. When the remaining resources are not enough to accommodate the BSR reporting of all logical channel groups, the BSR MAC CE is truncated and reported in the padding BSR.

In this embodiment, the bitmap indicates that all terminals have cached logical channel groups. For example, for example, in the terminal cache, there are data of logical channel group 0, logical channel group 1, logical channel group 4, and logical channel group 5 to be sent, but there are currently only 3 bytes of remaining resources, then the BSR MAC CE is shown in Figure 7A or 7B As shown.

The format of the MAC subheader corresponding to the truncated BSR MAC CE is one of FIG. 4A, FIG. 4B or FIG. 4C. The MAC subheader may have a length indication field L, or no length indication Domain L.

Base station side: After receiving the truncated BSR MAC CE sent by the terminal, the base station determines that there is still uplink data to be transmitted on the terminal side, and determines that the terminal still has the amount of buffered data in logical channel group 4 and logical channel group 5 not reported. The base station can allocate more uplink transmission resources for the terminal than the truncated BSR MAC CE indicates the amount of buffered data.

As shown in FIG. 8, the first terminal of the embodiment of the present invention includes: a generation module 800 for generating indication information according to a logical channel group with a buffered data amount; a processing module 801 for following the order indicated by the indication information Put the amount of cache data of at least one logical channel group that can be reported currently in the cache status report media access control control unit BSR MAC CE, and put the indication information in the BSR MAC CE; report module 802, Used to report the cache status report to the network-side device.

Optionally, the processing module 801 is also used to: before reporting the cache status report to the network side, determine the length of the BSR MAC CE according to the number of logical channel groups that need to report the amount of cache data.

Optionally, the BSR MAC CE format includes a complete BSR MAC CE and a truncated BSR MAC CE; the processing module 801 is specifically used to: if the BSR MAC CE format is a complete BSR MAC CE, then all the logical channel groups that can currently be reported The amount of cached data is placed in the BSR MAC CE in the order indicated by the instruction information; or, if the BSR MAC CE format is truncated BSR MAC CE, the part that can be reported currently The amount of buffered data in the logical channel group is placed in the BSR MAC CE in the order indicated by the indication information.

Optionally, the processing module 801 is further configured to: before reporting the cache status report to the network-side device, place the information indicating the type of the BSR MAC CE into the MAC subheader corresponding to the BSR MAC CE.

Optionally, the processing module 801 is also used to indicate that the corresponding MAC CE is a BSR MAC CE through a LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicate that the complete BSR MAC CE or truncation is by the CE Type BSR MAC CE; or, the two LCID values in the MAC subheader corresponding to the BSR MAC CE are used to indicate that the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE, respectively.

Optionally, the indication information is a bitmap bitmap, each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group, or The value in the bit position indicates whether the corresponding logical channel group has the amount of cached data.

As shown in FIG. 9, the first network-side device according to an embodiment of the present invention includes: a receiving module 900 for receiving a buffer status report reported by a terminal; and a determining module 901 for determining according to the indication information of the buffer status report The BSR MAC CE of the buffer status report carries the corresponding logical channel group of the buffered data volume, where the indication information is generated by the terminal according to the logical channel group with the buffered data volume.

Optionally, the indication information is a bitmap bitmap. Each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the corresponding logical channel. The amount of cache data or bit value of the channel group indicates whether there is cache data in the corresponding logical channel group.

Optionally, the determination module 901 is further used to determine the corresponding BSR MAC CE type according to the information in the MAC subheader used to indicate the BSR MAC CE type.

Optionally, the determination module 901 is specifically used to: if the combination of LCID and CE Type is used as information indicating the type of BSR MAC CE, the corresponding LCID value in the MAC subheader corresponding to the BSR MAC CE is used to determine the corresponding After MAC CE is BSR MAC CE, determine the type of BSR MAC CE according to CE Type; or, if the LCID value is used to indicate the information of BSR MAC CE type, then determine the BSR MAC according to the LCID value in the MAC subheader corresponding to BSR MAC CE CE type, where different LCID values are used to indicate whether it is a full BSR MAC CE or a truncated BSR MAC CE.

Optionally, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes the amount of cache data of all logical channel groups that the terminal can currently report; or, if the BSR MAC CE is a truncated BSR MAC CE, the BSR The MAC CE includes the amount of cached data of some logical channel groups that the terminal can currently report.

Optionally, the determining module 901 is also used to: determine the length of the BSR MAC CE according to the number of logical channel groups corresponding to the amount of cached data indicated by the indication information; or, if the BSR MAC CE is reported as padding BSR, then The length of the MAC PDU and the length of the MAC sub-PDU composed of other loads determine the BSR MAC CE and BSR MAC The length of the MAC sub-PDU composed of the MAC sub-header corresponding to the CE, where other loads include the MAC SDU and/or other MAC CEs except the BSR MAC CE.

As shown in FIG. 10, the second terminal of the embodiment of the present invention includes a processor 1001, a transceiver 1002, and a memory 1004, wherein: the processor 1001 is used to send and receive data through the transceiver 1002 and read the memory 1004 The program in executes the following process: generates indication information according to the logical channel group with the amount of cached data; puts the amount of cached data of at least one logical channel group that can be reported currently in the cache status report media storage in the order indicated by the indication information Take the control and control unit BSR MAC CE, and place the instruction information in the BSR MAC CE; control the transceiver 1002 to report the buffer status report to the network side device; the transceiver 1002, used to receive and send data; optional, in Before controlling the transceiver 1002 to report the cache status report to the network side, the processor 1001 is also used to read the program in the memory 1004 to perform the following process: determine the BSR MAC according to the number of logical channel groups that need to report the amount of cache data The length of CE.

Optionally, the format of the BSR MAC CE includes a complete BSR MAC CE and a truncated BSR MAC CE; the processor 1001 reads the program in the memory 1004 to perform the following process: If the format of the BSR MAC CE is the complete BSR MAC CE, it will The amount of cache data of all logical channel groups that can be reported currently is placed in the BSR MAC CE in the order indicated by the indication information; or, if the format of the BSR MAC CE is truncated BSR MAC CE, the part that can be reported currently The amount of cached data in the logical channel group is placed in the BSR MAC CE in the order indicated by the instruction information in.

Optionally, before controlling the transceiver 1002 to report the cache status report to the network side device, the processor 1001 is also used to read the program in the memory 1004 to perform the following process: set the information used to indicate the BSR MAC CE type In the MAC subheader corresponding to BSR MAC CE.

Optionally, the processor 1001 is also used to read the program in the memory 1004 to perform the following process: indicate that the corresponding MAC CE is the BSR MAC CE through a LCID value in the MAC subheader corresponding to the BSR MAC CE, and use the CE Type further indicates that it is full BSR MAC CE or truncated BSR MAC CE; or, the two LCID values in the MAC subheader corresponding to BSR MAC CE are used to indicate that BSR MAC CE is full BSR MAC CE or truncated BSR MAC CE, respectively .

Optionally, the indication information is a bitmap bitmap, where each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the amount of cache data corresponding to the logical channel group, or bit The value in the metabit indicates whether there is a buffered data amount in the corresponding logical channel group.

In FIG. 10, a bus architecture (represented by bus 1000), bus 1000 may include any number of interconnected buses and bridges, and bus 1000 will include one or more processors represented by general-purpose processor 1001 It is connected to various circuits of the memory represented by the memory 1004. The bus bar 1000 can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described herein. The bus interface 1003 provides an interface between the bus 1000 and the transceiver 1002. The transceiver 1002 can be one element or multiple elements, such as multiple A receiver and a transmitter provide units for communicating with various other devices on the transmission medium. For example, the transceiver 1002 receives external data from other devices. The transceiver 1002 is used to send the data processed by the processor 1001 to other devices. Depending on the nature of the computing system, a user interface 1005 may also be provided, such as a keypad, display, speakers, microphone, joystick.

The processor 1001 is responsible for managing the bus 1000 and general processing, such as running the general operating system as described above. The memory 1004 can be used to store data used by the processor 1001 when performing operations.

Optionally, the processor 1001 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or complex programmable logic Device (Complex Programmable Logic Device, CPLD).

As shown in FIG. 11, the second network-side device according to an embodiment of the present invention includes a processor 1101, a transceiver 1102, and a memory 1104, wherein: the processor 1101 is used to send and receive data through the transceiver 1102, and read the memory The program in the body 1104 executes the following processes: controlling the transceiver 1102 to receive the buffer status report reported by the terminal; according to the indication information of the buffer status report, determining the corresponding logical channel group carrying the buffer data amount in the BSR MAC CE of the buffer status report , Where the indication information is generated by the terminal based on the logical channel group with the amount of cached data; the transceiver 1102 is used to receive and send data.

Optionally, the indication information is a bitmap bitmap, each bitmap The bit bit corresponds to a logical channel group, and the value on the bit bit indicates whether to report the amount of cached data corresponding to the logical channel group or the value on the bit bit indicates whether the corresponding logical channel group has the amount of cached data.

Optionally, after controlling the transceiver 1102 to receive the buffer status report reported by the terminal, the processor 1101 is also used to read the program in the memory 1104 to perform the following process: According to the MAC subheader used to indicate BSR MAC CE Type information, determine the type of the corresponding BSR MAC CE.

Optionally, the processor 1101 reads the program in the memory 1104 to perform the following process: If the combination of LCID and CE Type is used to indicate the type of the BSR MAC CE, then through the MAC subheader corresponding to the BSR MAC CE After one LCID value determines that the corresponding MAC CE is a BSR MAC CE, the type of BSR MAC CE is determined according to the CE Type; or, if the LCID value is used to indicate the information of the BSR MAC CE type, the MAC sub-corresponding to the BSR MAC CE is used The LCID value in the header determines the type of BSR MAC CE, where different LCID values are used to indicate whether it is a full BSR MAC CE or a truncated BSR MAC CE.

Optionally, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes the amount of cache data of all logical channel groups that the terminal can currently report; or, if the BSR MAC CE is a truncated BSR MAC CE, the BSR The MAC CE includes the amount of cached data of some logical channel groups that the terminal can currently report.

Optionally, after controlling the transceiver 1102 to receive the buffer status report reported by the terminal, the processor 1101 is also used to read the program in the memory 1104 to perform the following process: Determine the length of the BSR MAC CE according to the number of logical channel groups corresponding to the amount of cached data indicated by the indication information; or, if the BSR MAC CE is reported as a padding BSR, the MAC sub-PDU composed of the length of the MAC PDU and other loads The length determines the length of the MAC sub-PDU composed of the BSR MAC CE and the MAC sub-header corresponding to the BSR MAC CE, where other loads include the MAC SDU and/or other MAC CEs other than the BSR MAC CE.

In FIG. 11, the bus architecture (represented by bus 1100), bus 1100 may include any number of interconnected buses and bridges, and bus 1100 will include one or more processors represented by processor 1101 and The various circuits of the memory represented by the memory 1104 are connected together. The bus bar 1100 can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be described further herein. The bus interface 1103 provides an interface between the bus 1100 and the transceiver 1102. The transceiver 1102 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor 1101 is transmitted on the wireless medium through the antenna 1105. Further, the antenna 1105 also receives the data and transmits the data to the processor 1101.

The processor 1101 is responsible for managing the bus 1100 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 1104 can be used to store data used by the processor 1101 in performing operations.

Optionally, the processor 1101 may be a CPU, ASIC, FPGA, or CPLD.

Based on the same inventive concept, an embodiment of the present invention also provides a method for reporting a cache status report by a terminal, because the device corresponding to the method is a terminal in the system for reporting a cache status report according to an embodiment of the present invention, and the method solves the problem The principle of is similar to that of this system, so the implementation of this method can refer to the implementation of the system, and the repetition is not repeated here.

As shown in FIG. 12, the method for the terminal to report the cache status report in the embodiment of the present invention includes: Step 1200, the terminal generates indication information according to the logical channel group with the amount of cached data; Step 1201, the terminal will currently be able to The reported buffer data amount of at least one logical channel group is placed in the BSR MAC CE, and the indication information is placed in the BSR MAC CE; Step 1202, the terminal reports the buffer status report to the network side device.

Optionally, before the terminal reports the buffer status report to the network side, the method further includes: the terminal determines the length of the BSR MAC CE according to the number of logical channel groups that need to report the amount of buffered data.

Optionally, the BSR MAC CE format includes a complete BSR MAC CE and a truncated BSR MAC CE; the terminal places the amount of buffered data of at least one logical channel group that can be reported currently in the BSR MAC CE in the order indicated by the indication information. Including: If the BSR MAC CE format is complete BSR MAC CE, the terminal will put the amount of cached data of all logical channel groups that can be reported currently in the BSR MAC CE in the order indicated by the indication information; or, If the format of the BSR MAC CE is truncated BSR MAC CE, the terminal places the amount of cached data of some logical channel groups that can be reported currently in the BSR MAC CE in the order indicated by the indication information.

Optionally, before the terminal reports the buffer status report to the network-side device, the method further includes: the terminal places information indicating the type of BSR MAC CE in the MAC subheader corresponding to the BSR MAC CE.

Optionally, the terminal indicates that the corresponding MAC CE is a BSR MAC CE through a logical channel number LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicates that the CE type Type is a complete BSR MAC CE or truncated BSR MAC CE Or, the terminal uses the two LCID values in the MAC subheader corresponding to the BSR MAC CE to indicate that the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE.

Optionally, the indication information is a bitmap bitmap. Each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group, or bit The value in the bit indicates whether there is buffer data in the corresponding logical channel group.

Based on the same inventive concept, an embodiment of the present invention also provides a method for a network side device to receive a cache status report. Since the device corresponding to the method is a network side device in the system for reporting a cache status report according to an embodiment of the present invention, and the The principle of the method to solve the problem is similar to that of this system, so the implementation of this method can be referred to the implementation of the system, and the repetition is not repeated here.

As shown in FIG. 13, the network-side device of the embodiment of the present invention receives the buffer status report The method includes: step 1300, the network side device receives the cache status report reported by the terminal; step 1301, the network side device determines the logic corresponding to the amount of cache data carried in the BSR MAC CE of the cache status report according to the indication information of the cache status report Channel group, where the indication information is generated by the terminal according to the logical channel group with the amount of cached data.

Optionally, the indication information is a bitmap, and each bit bit in the bitmap corresponds to a logical channel group, and the value on the bit bit indicates whether to report the amount of cached data corresponding to the corresponding logical channel group or the value on the bit bit Indicates whether the corresponding logical channel group has the amount of cached data.

Optionally, after receiving the buffer status report reported by the terminal, the network-side device further includes: the network-side device determines the corresponding BSR MAC CE type according to the information in the MAC subheader used to indicate the BSR MAC CE type.

Optionally, the network-side device determines the corresponding BSR MAC CE type according to the information in the MAC subheader used to indicate the BSR MAC CE type, including: if the combination of LCID and CE Type is used to indicate the BSR MAC CE type information , Then the network-side device determines the type of BSR MAC CE according to the CE Type after determining the corresponding MAC CE as the BSR through the 1 LCID value in the MAC subheader corresponding to the BSR MAC CE; or, if the LCID value is used to indicate the BSR MAC For CE type information, the network-side device determines the BSR MAC CE type according to the LCID value in the MAC subheader corresponding to the BSR MAC CE, where different LCID values are specifically used to indicate whether it is a complete BSR MAC CE or a truncated BSR MAC CE.

Optionally, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes the amount of cache data of all logical channel groups that the terminal can currently report; or, if the BSR MAC CE is a truncated BSR MAC CE, the BSR MAC CE includes the cache data of some logical channel groups that the terminal can currently report the amount.

Optionally, after receiving the buffer status report reported by the terminal, the network-side device further includes: the network-side device determines the length of the BSR MAC CE according to the number of logical channel groups corresponding to the amount of cached data indicated by the indication information; or, if BSR MAC CE reports padding BSR, then the network-side device determines the length of the MAC sub-PDU composed of the BSR MAC CE and the MAC sub-header corresponding to the BSR MAC CE according to the length of the MAC PDU and the length of the MAC sub-PDU composed of other loads. Other loads include MAC SDU and/or other MAC CEs other than BSR MAC CE.

An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. The storage medium may be non-volatile, that is, the content is not lost after power off. A software program is stored in the storage medium, and when the software program is read and executed by one or more processors, any of the above solutions for reporting a cache status report in the embodiment of the present invention may be implemented.

The storage medium may be connected to the processor through an external interface or an internal interface. For example, the memory is a U disk, a mobile hard disk, etc., it can be connected through an external interface; for example, the memory is a storage module in the device where the processor is located, it can be connected through an internal interface.

An embodiment of the present invention also provides a computer program product, which can realize any of the above solutions for reporting a cache status report in the embodiment of the present invention when it is read and executed by one or more processors.

The invention has been described above with reference to block diagrams and/or flowcharts showing methods, devices (systems) and/or computer program products according to embodiments of the invention. It should be understood that one block of the block diagram and/or flowchart illustration and a combination of blocks of the block diagram and/or flowchart illustration can be implemented by computer program instructions. These computer programming instructions can be provided to the processors of general-purpose computers, special-purpose computers, and/or other programmable data processing devices to produce machines that allow the creation of instructions executed by computer processors and/or other programmable data processing devices A method for implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

Correspondingly, the invention can also be implemented with hardware and/or software (including firmware, resident software, microcode, etc.). Furthermore, the embodiments of the present invention may take the form of a computer program product on a computer usable or computer readable storage medium, which has computer usable or computer readable program code implemented in a medium to be executed by an instruction execution system Use or use in conjunction with an instruction execution system. In the context of an embodiment of the present invention, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or transmit programs for use by an instruction execution system, apparatus, or device, or in combination with instructions Execution system, device or equipment use.

Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the patent application of the present invention and the scope of its equivalent technology, the present invention is also intended to include these modifications and variations.

1200~1202‧‧‧Step

Claims (21)

A method for reporting a cache status report, characterized in that the method includes: the terminal generates indication information according to the logical channel group with the amount of cached data; the terminal determines the BSR MAC according to the number of logical channel groups that need to report the amount of cached data The length of the CE; the terminal places the amount of cache data of at least one logical channel group that can be reported currently in the BSR MAC CE of the media access control unit of the cache status report in the order indicated by the indication information, and the indication The information is placed in the BSR MAC CE; the terminal reports the cache status report to the network-side device. The method for reporting a buffer status report as described in claim 1, wherein the format of the BSR MAC CE includes a complete BSR MAC CE and a truncated BSR MAC CE; the terminal will report the currently available in the order indicated by the indication information The amount of cached data of at least one logical channel group is placed in the BSR MAC CE, including: If the format of the BSR MAC CE is a complete BSR MAC CE, the terminal will currently report the amount of cached data of all logical channel groups , Placed in the BSR MAC CE in the order indicated by the instruction information; or, if the format of the BSR MAC CE is truncated BSR MAC CE, the terminal will report the amount of cached data of some logical channel groups that can currently be reported, Place in the BSR MAC CE in the order indicated by the instruction information. The method for reporting a cache status report according to claim 2, wherein before the terminal reports the cache status report to the network side device, the method further includes: the terminal placing information indicating the type of the BSR MAC CE in the terminal In the MAC subheader corresponding to BSR MAC CE. The method for reporting a buffer status report as described in claim 3, wherein the terminal indicates that the corresponding MAC CE is a BSR MAC CE through a logical channel number LCID value in the MAC subheader corresponding to the BSR MAC CE, and uses the CE Type Type further indicates the complete BSR MAC CE Or truncate the BSR MAC CE; or, the terminal uses the two LCID values in the MAC subheader corresponding to the BSR MAC CE to indicate that the BSR MAC CE is a complete BSR MAC CE or truncated BSR MAC CE, respectively. The method for reporting a cache status report according to any one of the request items 1 to 4, wherein the indication information is a bitmap, each bit bit in the bitmap corresponds to a logical channel group, and the value in the bit bit Indicates whether to report the amount of cached data corresponding to the logical channel group, or the value on the bit indicates whether the corresponding logical channel group has the amount of cached data. A method for reporting a cache status report, characterized in that the method includes: a network side device receives a cache status report reported by a terminal; the network side device determines the BSR MAC of the cache status report according to the indication information of the cache status report The CE carries the corresponding logical channel group of the amount of cached data, where the indication information is generated by the terminal according to the logical channel group with the amount of cached data; after the network side device receives the cache status report reported by the terminal, it also includes: The network side device determines the length of the BSR MAC CE according to the number of logical channel groups corresponding to the amount of cached data indicated by the indication information; or, if the BSR MAC CE is reported as padding BSR, the network side device according to the MAC The length of the protocol data unit PDU and the length of the MAC sub-PDU composed of other loads determine the length of the MAC sub-PDU composed of the BSR MAC CE and the MAC sub-header corresponding to the BSR MAC CE, where the other loads include MAC SDU and/or MAC CE other than BSR MAC CE. The method for reporting a cache status report according to claim 6, wherein the indication information is a bitmap, each bit in the bitmap corresponds to a logical channel group, and the value in the bit indicates whether to report the corresponding logic The amount of buffered data or bit value of the channel group indicates whether the corresponding logical channel group has buffered data. The method for reporting a buffer status report according to claim 6, wherein after the network side device receives the buffer status report reported by the terminal, the method further includes: The network side device determines the corresponding BSR MAC CE type according to the information in the MAC sub-header indicating the type of the BSR MAC CE. The method for reporting a buffer status report according to claim 8, wherein the network-side device determines the corresponding BSR MAC CE type according to the information in the MAC subheader indicating the type of the BSR MAC CE, including: If the combination of LCID and CE Type is used to indicate the information of the BSR MAC CE type, the network-side device determines the corresponding MAC CE as a BSR based on the LCID value in the MAC subheader corresponding to the BSR MAC CE. Type determines the type of BSR MAC CE; or, if the LCID value is used to indicate the type of BSR MAC CE information, the network-side device determines the type of BSR MAC CE based on the LCID value in the MAC subheader corresponding to the BSR MAC CE, where , Different LCID values are used to indicate whether it is a full BSR MAC CE or a truncated BSR MAC CE. The method for reporting a buffer status report according to claim 9, wherein, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes the amount of cache data of all logical channel groups that the terminal can currently report Or, if the BSR MAC CE is a truncated BSR MAC CE, the BSR MAC CE includes the amount of cache data of some logical channel groups that the terminal can currently report. A terminal for reporting a buffer status report, characterized in that the terminal includes a processor, a transceiver and a memory, wherein the processor is used to control the transceiver to send and receive data and read the memory The program performs the following process: generates instructions based on the logical channel group with the amount of cached data; determines the length of the BSR MAC CE according to the number of logical channel groups that need to report the amount of cached data; in accordance with the order indicated by the instruction information The amount of buffered data of at least one logical channel group that can be reported currently is placed in the buffer status report media access control control unit BSR MAC CE, and the indication information is placed in the BSR MAC CE; the transceiver is controlled to the network side The device reports the cache status report; The transceiver is used to receive and send data. The terminal for reporting a buffer status report according to claim 11, wherein the format of the BSR MAC CE includes a complete BSR MAC CE and a truncated BSR MAC CE; the processor reads the program in the memory and performs the following process: Put the amount of buffered data of at least one logical channel group that can be reported currently in the BSR MAC CE in the order indicated by the instruction information, including: If the format of the BSR MAC CE is a complete BSR MAC CE, the current The reported buffer data volume of all logical channel groups is placed in the BSR MAC CE in the order indicated by the instruction information; or, if the format of the BSR MAC CE is truncated BSR MAC CE, the current reportable The amount of cached data of some logical channel groups is placed in the BSR MAC CE in the order indicated by the indication information. The terminal for reporting the cache status report as described in claim 12, wherein, before controlling the transceiver to report the cache status report to the network side device, the processor is further used to read the program in the memory to execute the following Process: The information indicating the type of the BSR MAC CE is placed in the MAC subheader corresponding to the BSR MAC CE. The terminal for reporting the buffer status report as described in claim 13, wherein the processor is further used to read the program in the memory to perform the following process: through one of the MAC subheaders corresponding to the BSR MAC CE The logical channel number LCID value indicates that the corresponding MAC CE is a BSR MAC CE, and the CE type is used to further indicate whether it is a complete BSR MAC CE or a truncated BSR MAC CE; or, use the two LCIDs in the MAC subheader corresponding to the BSR MAC CE The values are used to indicate whether the BSR MAC CE is a full BSR MAC CE or a truncated BSR MAC CE, respectively. The terminal for reporting the buffer status report as described in any one of the request items 11 to 14, wherein the indication information is a bitmap, each bit in the bitmap corresponds to a logical channel group, and the bit The value on the bit indicates whether to report the amount of cached data corresponding to the logical channel group, or the value on the bit indicates whether the amount of cached data on the corresponding logical channel group. A network-side device reporting a cache status report, characterized in that the network-side device includes a processor, a transceiver and a memory, wherein the processor is used to send and receive data through the transceiver and read the The program in the memory performs the following processes: controlling the transceiver to receive the buffer status report reported by the terminal; according to the indication information of the buffer status report, determining the corresponding logic of the buffer data amount carried in the BSR MAC CE of the buffer status report Channel group, wherein the indication information is generated by the terminal according to the logical channel group with the amount of cached data; after receiving the buffer status report reported by the terminal, the number of logical channel groups corresponding to the amount of cached data indicated by the indication information according to the indication information, Determine the length of the BSR MAC CE; or, if the BSR MAC CE is reported as padding BSR, determine the BSR MAC CE and the BSR MAC according to the length of the MAC protocol data unit PDU and the length of the MAC sub-PDU composed of other loads The length of the MAC sub-PDU composed of the MAC sub-header corresponding to the CE, where other loads include MAC SDU and/or other MAC CEs except BSR MAC CE. The transceiver is used to receive and send data. The network-side device that reports the cache status report as described in claim 16, wherein the indication information is a bitmap, each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report The amount of cached data or bit value of the corresponding logical channel group indicates whether the corresponding logical channel group has cached data. The network-side device that reports the cache status report according to claim 16, wherein, after controlling the transceiver to receive the cache status report reported by the terminal, the processor is further used to read the program in the memory to execute The following process: According to the information in the MAC subheader indicating the type of the BSR MAC CE, determine the type of the corresponding BSR MAC CE. The network-side device that reports the cache status report as described in claim 18, wherein the processor reads the program in the memory to perform the following process: According to the information in the MAC subheader used to indicate the BSR MAC CE type To determine the type of the corresponding BSR MAC CE, including: If the combination of LCID and CE Type is used to indicate the information of the BSR MAC CE type, then the LCID value in the MAC subheader corresponding to the BSR MAC CE is used to determine the corresponding After the MAC CE is a BSR, determine the type of the BSR MAC CE according to the CE Type; or, if the LCID value is used to indicate the BSR MAC CE type information, then determine the BSR MAC CE according to the LCID value in the MAC subheader corresponding to the BSR MAC CE Type, where different LCID values are used to indicate whether it is a full BSR MAC CE or a truncated BSR MAC CE. The network-side device that reports the cache status report as described in claim 19, wherein, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes the cache of all logical channel groups that the terminal can currently report The amount of data; or, if the BSR MAC CE is a truncated BSR MAC CE, the BSR MAC CE includes the amount of cached data of some logical channel groups that the terminal can currently report. A computer-readable storage medium on which a computer program is stored, which is characterized in that when the computer program is executed by a processor, the method steps of any one of request items 1 to 5 or 6 to 10 are realized.

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