CN107360591B

CN107360591B - Method and equipment for reporting buffer status report

Info

Publication number: CN107360591B
Application number: CN201710454005.5A
Authority: CN
Inventors: 谌丽
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-06-15
Filing date: 2017-06-15
Publication date: 2020-01-14
Anticipated expiration: 2037-06-15
Also published as: WO2018228035A1; TWI681654B; CN107360591A; TW201906359A

Abstract

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method and equipment for reporting a buffer status report, which are used for solving the problem that the BSR MAC CE format in the prior art cannot meet the requirement of 5G NR. According to the method and the device, the terminal generates the indication information according to the logical channel group with the buffer data volume, places the buffer data volume of at least one logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information, and places the indication information in the BSR MAC CE. The indication information can indicate the logical channel group corresponding to the buffer data volume information in the BSR MAC CE, so that the 5G NR requirement can be met.

Description

Method and equipment for reporting buffer status report

Technical Field

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

Background

In an LTE (Long Term Evolution) system, each RB (Radio Bearer) corresponds to a Logical Channel, and each Logical Channel needs a corresponding LCID (Logical Channel ID, Logical Channel number) for identification.

The MAC (Media Access Control) layer has a logical channel multiplexing function, and organizes Data of a plurality of logical channels into one MAC PDU (Protocol Data Unit) and transmits the MAC PDU to the physical layer for transmission.

The overall structure of a MAC PDU is shown in fig. 1A, and in the schematic structural diagram of the MAC PDU, the MAC PDU includes a MAC header (MAC header), 0 or more MAC service data units (MAC SDUs), 0 or more MAC control units (MAC CEs), and optional padding bits (padding).

The MAC PDU header includes one or more sub-headers, and each MAC sub-header corresponds to a MAC sdu, a MAC CE (control unit), or a padding.

The MAC subheader corresponding to the MAC SDU adopts a 7-bit L field as shown in fig. 1B, and adopts a 15-bit L field as shown in fig. 1C.

Each MAC subheader contains fields and specific meanings that are different, and the fields commonly found in the MAC subheader include:

LCID: a type or padding of a logical channel entity or MAC control element for identifying the MAC SDU.

E (extended domain): indicating whether a subsequent field follows the MAC subheader where the MAC header is located.

R (reserved bit): for subsequent application extension, the size is 2bits, and since some embodiments of the present invention will utilize reserved bits, in embodiments where reserved bits are used, the bits may be named by different names as needed, such as extension bits, etc.

"F2" and "F" (format fields): for jointly indicating the length of the L-field.

L (length indication field): and the length of the MAC SDU or the MAC control unit is indicated, and the unit is byte.

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

In LTE, the number of LCIDs occupied by a logical channel is not large, and as the number of LCIDs is sufficient, each MAC CE occurs, one LCID is occupied.

Multiple service types are introduced in the 5G NR (New Radio, New air interface), the number of logical channels and the number of logical channel groups are both greatly increased, and the BSR MAC CE format of LTE is not applicable.

To sum up, the current BSR MAC CE format cannot meet the requirement of 5G NR.

Disclosure of Invention

The invention provides a method and equipment for reporting a buffer status report, which are used for solving the problem that the BSR MAC CE format in the prior art cannot meet the requirement of 5G NR.

The method for reporting the buffer status report provided by the embodiment of the invention comprises the following steps:

the terminal generates indication information according to the logic channel group with the cache data volume;

the terminal places the buffer data volume of at least one logic channel group which can be reported currently in the buffer state report media access control unit (BSR MAC CE) according to the sequence indicated by the indication information, and places the indication information in the BSR MAC CE;

and the terminal reports the buffer status report to the network side equipment.

the network side equipment receives a cache state report reported by the terminal;

and the network side equipment determines a corresponding logical channel group carrying the buffer data volume in the BSR MAC CE of the buffer status report according to the indication information of the buffer status report, wherein the indication information is generated by the terminal according to the logical channel group with the buffer data volume.

The terminal for reporting the buffer status report provided by the embodiment of the invention comprises:

the generating module is used for generating indication information according to the logical channel group with the cache data volume;

a processing module, configured to place, according to the order indicated by the indication information, the buffer data size of at least one logical channel group that can be currently reported in a buffer status report media access control unit BSR MAC CE, and place the indication information in the BSR MAC CE;

and the reporting module is used for reporting the buffer status report to the network side equipment.

The network side device for reporting a buffer status report provided by the embodiment of the invention comprises:

the receiving module is used for receiving the buffer status report reported by the terminal;

a determining module, configured to determine, according to the indication information of the buffer status report, a corresponding logical channel group carrying a buffer data volume in the BSRMAC CE of the buffer status report, where the indication information is generated by the terminal according to the logical channel group having the buffer data volume.

According to the method and the device, the terminal generates the indication information according to the logical channel group with the buffer data volume, places the buffer data volume of at least one logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information, and places the indication information in the BSR MAC CE. The indication information can indicate the logical channel group corresponding to the buffer data volume information in the BSR MAC CE, so that the 5G NR requirement can be met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1A is a diagram of a MAC PDU structure in the background art;

FIG. 1B is a diagram illustrating a MAC sub-header structure corresponding to a MAC SDU of a 7-bit L domain in the background art;

FIG. 1C is a diagram illustrating a MAC sub-header structure corresponding to a 15-bit L-domain MAC SDU in the background art;

fig. 2 is a schematic structural diagram of a system for reporting a buffer 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 the embodiment of the present invention;

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

fig. 4A is a diagram of a first MAC subheader according to an embodiment of the present invention;

FIG. 4B is a diagram of a second MAC subheader according to an embodiment of the invention;

FIG. 4C is a diagram of a third MAC subheader according to an embodiment of the present invention;

fig. 5A is a schematic diagram of a first BSR MAC CE in embodiment 1 of the present invention;

fig. 5B is a schematic diagram of a second BSR MAC CE in embodiment 1 of the present invention;

fig. 6A is a schematic diagram of a first BSR MAC CE in embodiment 3 of the present invention;

fig. 6B is a schematic diagram of a second BSR MAC CE in embodiment 3 of the present invention;

fig. 7A is a schematic diagram of a first BSR MAC CE in embodiment 4 of the present invention;

fig. 7B is a schematic diagram of a second BSR MAC CE in embodiment 4 of the present invention;

fig. 8 is a schematic structural diagram of a first terminal according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a first network-side device according to an embodiment of the present invention;

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

fig. 13 is a flowchart illustrating a method for a network side device to receive a buffer status report according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 2, the system for reporting a buffer status report according to the embodiment of the present invention includes:

a terminal 10, configured to generate indication information according to a logical channel group with a cache data amount; according to the sequence indicated by the indication information, the buffer data volume of at least one logical channel group which can be reported currently is placed in a buffer status report media access control unit (BSR MAC CE), and the indication information is placed in the BSR MAC CE; and reporting the buffer status report to the network side equipment.

The network side device 20 is configured to receive a buffer status report reported by the terminal; and determining a corresponding logical channel group carrying the cache data volume in the BSR MAC CE of the cache state report according to the indication information of the cache state report, wherein the indication information is generated by the terminal according to the logical channel group with the cache data volume information.

According to the method and the device, the terminal generates the indication information according to the logical channel group with the buffer data volume, places the buffer data volume of at least one logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information, and places the indication information in the BSR MAC CE. The logical channel group corresponding to the buffer data amount in the BSR MAC CE can be indicated through the indication information, so that the 5G NR requirement can be met, the buffer reporting efficiency is further improved, and the resources are saved.

Optionally, the terminal and the network side may report the number of logical channel groups in which the data amount is cached and the logical channel group indication information as needed, and determine the length of the BSR MAC CE. So that no length indication may be carried in the MAC subheader, although the length of the BSR MAC CE is not fixed.

That is, the number of logical channel groups that need to report the amount of buffered data is different, and the lengths of BSR MAC CEs are different, but the length indication field L is not needed in the MAC subheader to indicate the length of the BSR MAC CE that is longer.

In the invention, the Buffer Size reported by the Buffer data volume of one logical channel group takes 8bit and 6bit as examples, and in the specific implementation, the Buffer Size is only one of 8bit or 6bit and cannot appear at the same time. Taking 8-bit buffer size as an example, if the number of logical channel groups for which the buffer data amount needs to be reported is K, the length of the BSR MAC CE is K + 1.

The BSR MAC CE types of the embodiments of the present invention are divided into two types, each having a different format: full BSR MAC CE and truncated BSR MAC CE. The following are described separately.

The first method comprises the following steps: full BSR MAC CE.

In this way, the terminal places the buffer data volumes of all logical channel groups that can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information.

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

If the indication information is bitmap, each bit in the bitmap corresponds to a logical channel group, and the value on the bit indicates whether to report the buffer data volume of the corresponding logical channel group, and the maximum number of the logical channel groups is 8, then the bitmap with 1byte can be used as the indication information of the logical channel group.

Assuming that for a specific logical channel group, 1 represents reporting, 0 represents not reporting, and all logical channel groups that currently have a buffered data volume and need to be buffered and reported are logical channel group 0, logical channel group 1, and logical channel group 5, the bitmap is 11000100.

And the terminal places the corresponding buffer data volume in the BSR MAC CE according to the sequence of the logical channel group 0, the logical channel group 1 and the logical channel group 5.

Correspondingly, if the bitmap received by the network side device is 11000100, it is known that the buffer data size of the logical channel group 0, the logical channel group 1, and the logical channel group 5 is carried in the BSR MAC CE.

For the complete BSR MAC CE, there is another optimization method, that is, if all the logical channel groups capable of being reported currently are the maximum number of logical channel groups, that is, all the 8 logical channel groups need to be buffered and reported, the indication information may not appear in the BSR MAC CE in an implicit manner.

For example, as shown in fig. 3A, there are 8 logical channel groups in total, and if all the logical channel groups that can be reported currently are 8, the buffer data volumes of the 8 logical channel groups are all placed in the BSR MAC CE;

correspondingly, if the BSR MAC CE received by the network side device does not have the indication information, the buffer data size of all logical channel groups included in the BSR MAC CE is known.

Of course, the above situation may also carry indication information.

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 on the bit of the indication information of the logical channel group indicates whether to report the amount of the buffer data of the corresponding logical channel group, and the number of bits occupied by the amount of the buffer data of each logical channel group is fixed, the network side device can determine how many buffer data amounts of the logical channel groups are included in the BSR MAC CE according to the indication information of the logical channel group, so the network side device can determine the length of the BSR MAC CE without separately carrying a length indication field, and therefore the MAC subheader may not carry the length indication field.

And the second method comprises the following steps: truncated BSR MAC CE.

In this way, the terminal places the buffer data volume of the partial logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information.

In implementation, bitmap may be used as the indication information.

If the indication information is bitmap, each bit in the bitmap corresponds to a logic channel group, and the value on the bit indicates whether to report the cache data volume of the corresponding logic channel group or whether the value on the bit indicates that the corresponding logic channel group has the cache data volume.

If the value on the bit indicates whether to report the buffer data volume of the corresponding logical channel group, the number of the logical channel group is 8 at most, 1byte bitmap can be used for indicating the logical channel group, 1 indicates reporting, 0 indicates not reporting, all the logical channel groups capable of being reported currently are the logical channel group 0, the logical channel group 1 and the logical channel group 5, the terminal reports the buffer data volume of the logical channel group 0 and the logical channel group 1 according to the logical channel group sequence and the size of the BSR MAC CE which can be accommodated by the current resource, and the bitmap is 11000000.

And the terminal places the corresponding buffer data volume in the BSR MACCE according to the sequence of the logical channel group 0 and the logical channel group 1.

Correspondingly, if the bitmap received by the network side device is 1100000, it is known that the buffer data volume of the logical channel group 0 and the logical channel group 1 is carried in the BSR MAC CE.

If the number of the logical channel groups indicates whether the corresponding logical channel group has the cached data amount or not, the number of the logical channel groups is 8 at most, the logical channel group indication can be performed by using a 1byte bitmap, wherein 1 indicates that the cached data amount exists, 0 indicates that the cached data amount does not exist, the logical channel groups with the cached data amount at the terminal are a logical channel group 0, a logical channel group 1, a logical channel group 2 and a logical channel group 3, but the logical channel groups capable of reporting the cached data amount are the logical channel group 0 and the logical channel group 1 currently. In this example, the bitmap is 11110000, but only the buffer data amount of the logical channel group 0 and the logical channel group 1 is reported in the truncated BSR MAC CE.

Correspondingly, if the bitmap received by the network side device is 11110000, it is known that the logical channel group 0, the logical channel group 1, the logical channel group 2, and the logical channel group 3 have buffer data amounts, and then when the buffer data amounts of the two logical channel groups are found during analysis of the BSR MAC CE, it is known that the buffer data amounts of the logical channel group 0 and the logical channel group 1 are included in the BSR MAC CE, and it can also be known that the terminal has not reported buffer data amounts of the logical channel group 2 and the logical channel group 3.

For a 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 padding BSR. The network side device determines the length of a MAC sub-PDU (which may also be referred to as MAC sub-PDU) composed of the BSR MAC CE and a MAC sub-header corresponding to the BSR MAC CE according to the length of the MAC PDU and the length of a MAC sub-PDU composed of other loads, where the other loads include MAC SDUs and/or other MAC CEs except the BSR MAC CE.

If the other loads comprise the MAC SDU, the MAC sub-PDU consisting of the other loads comprises the MAC SDU and the corresponding MAC sub-head thereof;

if the other loads comprise other MAC CEs except the BSR MAC CE, the MAC sub-PDU consisting of the other loads comprises other MAC CEs except the BSR MAC CE and corresponding MAC sub-headers thereof;

if the other payload includes the MAC SDU and other MAC CEs except the BSR MAC CE, the MAC sub-PDU composed of the other payload includes the MAC SDU and its corresponding MAC sub-header, and includes other MAC CEs and its corresponding MAC sub-header except the BSR MAC CE.

For example, each MAC sub-PDU may include 1 MAC SDU and its corresponding MAC subheader, and each MAC sub-PDU may include 1 other MAC CE and its corresponding MAC subheader in addition to the BSR MAC CE.

If the value on the bit indicates whether to report the buffer data volume of the corresponding logical channel group, the length of the BSR MAC CE may also obtain the length of the BSR MAC CE according to the number of the logical channel group corresponding to the indication information.

Based on this, the network side device may determine the length of the BSR MAC CE, and the MAC subheader may 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 may determine the padding length after subtracting the length of the MAC sub-PDU composed of other loads from the length of the MAC PDU.

The padding part does not need length indication, and when the padding part is used for reporting the shortened BSR MAC CE, the length indication field is also not needed.

Optionally, the capacity (i.e., buffer size) of the buffer data volume of a single logical channel in the BSR MAC CE according to the embodiment of the present application is divided into two types, i.e., 8 bits (see fig. 3B specifically) and 6 bits (see fig. 3C specifically).

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

The embodiment of the application provides two formats of the BSR MAC CE, and an optional mode is that information used for indicating the type of the BSR MAC CE is carried in a MAC subheader corresponding to the BSR MAC CE.

Specifically, the terminal places information for indicating the type of the BSR MAC CE in a MAC subheader corresponding to the BSR MAC CE;

correspondingly, the network side device determines the type of the corresponding BSR MAC CE according to the information for indicating the type of the BSR MAC CE in the MAC subheader.

The embodiment of the invention provides a mode that various MAC subheaders contain information for indicating the type of BSR MAC CE, which is respectively introduced below.

The mode one, LCID domain and CE Type combined indication BSR MAC CE Type: the LCID domain is used to indicate that the corresponding content is BSR MAC CE, and another domain CE Type is used to further indicate the specific Type of BSR MAC CE.

Specifically, the terminal indicates that the corresponding MACCE is BSR MAC CE through 1 LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicates the complete BSR MAC CE or the truncated BSR MAC CE with CE Type;

correspondingly, after the network side device determines that the corresponding MAC CE is the BSR MAC CE through the LCID domain in the MAC subheader corresponding to the BSR MAC CE, the network side device specifically determines that the Type of the BSR MAC CE is the complete BSR MAC CE or the truncated BSR MAC CE according to the CE Type.

The method includes that 1 LCID value is used to indicate that the MAC CE is BSR MAC CE, and a specific LCID value may use several bits, for example, 1 may be used to indicate that the MAC CE is BSR MAC CE, or 11 may be used to indicate that the MAC CE is BSR MAC CE;

further indicating with CE Type whether the Type of BSR MAC CE is full or truncated, such as may be done with 1 and truncated with 0; it may also be denoted as 11 for full and 10 for truncated.

In an implementation, the indication may be in the entire CE Type or in one or more bits in CE Type.

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

One way is to actually indicate whether BSR is by LCID and whether full or truncated is by CE Type.

For example, if LCID is x, it indicates BSR, CE Type is 1, it indicates full BSR, and 0 indicates truncated BSR, then LCID in the MAC subheader corresponding to a full BSR MAC CE is x, and CE Type value is 1; the LCID value in the MAC subheader corresponding to a truncated BSR MAC CE is x, and the CE Type value is 0.

The length indication field L in fig. 4A and 4B is redundant information, and may include a length indication field for the sake of uniform format. Since it is not necessary to include a length indication field, it is indicated by a dotted line in the figure, i.e., it indicates that the field may not exist.

In the second mode, the LCID domain indicates different BSR MAC CE types: specifically, different types of BSR MAC CEs are represented by different LCID values.

Specifically, the terminal uses two LCID values in the MAC subheader corresponding to the BSR MAC CE to indicate that the BSRMAC CE is a complete BSRMAC CE or a truncated BSR MAC CE, respectively;

correspondingly, the network side device determines the format of the BSR MAC CE according to the LCID value in the MAC subheader corresponding to the BSR MAC CE.

The second way is to use two LCID values to indicate that the MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE, and a specific LCID value may use several bits, for example, 1 may be used to indicate that the MAC CE is a complete BSR MAC CE, and 0 indicates that the MAC CE is a truncated BSR MAC CE; the MAC CE may also be denoted as a full BSR MAC CE by 11 and a truncated BSRMAC CE by 10.

For example, LCID ═ x denotes a full BSR MAC CE, and LCID ═ y denotes a truncated BSR MAC CE. Other bits may be reserved bits as shown in fig. 4C.

Way two is actually whether the BSR MAC CE is a full BSR MAC CE or a truncated BSR MAC CE as indicated by the value of LCID.

For example, LCID1 represents a full BSR MAC CE, LCID2 represents a truncated BSR MAC CE, and the LCID value in the MAC subheader corresponding to a full BSRMAC CE is LCID 1; the LCID value in the MAC subheader corresponding to a truncated BSR MAC CE is LCID 0.

In fig. 4C, the length indication field L is redundant information, and may include a length indication field for uniform format. Since it is not necessary to include a length indication field, it is indicated by a dotted line in the figure, i.e., it indicates that the field may not exist.

The following describes the embodiments of the present invention by way of examples.

Example 1: regular BSR or periodic BSR.

A terminal side: after triggering the regular BSR or the periodic BSR, the terminal side reports all the buffer information, that is, only the complete BSR can be reported.

BSR MAC CE format is as in fig. 3A. For example, if the terminal has the Buffer data amount of the logical channel group 0, the logical channel group 2, the logical channel group 4, and the logical channel group 5, the specific BSR MAC CE is as shown in fig. 5A (8-bit Buffer Size) or fig. 5B (6-bit Buffer Size).

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

A base station side: receiving a BSR report sent by UE, determining a logic channel group with a buffer data volume from a first byte of a BSR MAC CE, and receiving a subsequent buffer data volume report. And performing subsequent uplink scheduling on the terminal according to the uplink scheduling information.

Example 2: padding (padding) BSR reports complete buffer information.

A terminal side: if the terminal has residual resources after organizing the uplink data packet, the terminal buffer still has data to be transmitted, but the residual resources are not enough to accommodate a new MAC SDU, the padding BSR reporting can be organized, that is, the BSR MAC CE is placed in the padding for reporting.

When the remaining resources are sufficient to accommodate the full BSR reporting, the full BSR MAC CE is reported in the padding BSR. The BSRMAC CE and its header format are the same as those of embodiment 1.

A base station side: after receiving the padding BSR sent by the terminal, the base station determines that the terminal side still has uplink data to be transmitted, and accordingly performs subsequent uplink scheduling on the terminal.

Example 3: truncated BSR reporting (bitmap indicates the logical channel set contained in the current truncated BSR MAC CE).

A terminal side: if the terminal has residual resources after organizing the uplink data packet, the terminal buffer still has data to be transmitted, but the residual resources are not enough to accommodate a new MAC SDU, the terminal can organize the padding BSR to report. When the remaining resources are not enough to accommodate BSR reporting of the entire logical channel group, the truncated BSR MAC CE is reported in padding BSR.

In this embodiment, the bitmap only indicates the logical channel group included in the current truncated BSR MAC CE. For example, if there are data to be transmitted in the logical channel group 0, the logical channel group 1, the logical channel group 4, and the logical channel group 5 in the terminal buffer, but there are only 3 bytes of remaining resources currently, the BSR MAC CE is as shown in fig. 6A or fig. 6B.

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

A base station side: after receiving the truncated BSR MAC CE sent by the terminal, the base station determines that the terminal side still has uplink data to be transmitted, and may allocate uplink transmission resources to the terminal, which are more than the amount of the buffer data indicated by the truncated BSR MAC CE.

Example 4: reporting a truncated BSR (bitmap indicates that all terminals have a buffered logical channel group).

In this embodiment, the bitmap indicates that all terminals have a buffered logical channel group. For example, if there are data to be transmitted in the logical channel group 0, the logical channel group 1, the logical channel group 4, and the logical channel group 5 in the terminal buffer, but there are only 3 bytes of remaining resources currently, the BSR MAC CE is as shown in fig. 7A or fig. 7B.

A base station side: after receiving the truncated BSR MAC CE sent by the terminal, the base station determines that the terminal side still has uplink data to be transmitted, and determines that the terminal still has buffer data amounts of the logical channel group 4 and the logical channel group 5 which are not reported, and the base station may allocate uplink transmission resources, which are more than the buffer data amount indicated by the truncated BSR MAC CE, to the terminal.

As shown in fig. 8, a first terminal according to an embodiment of the present invention includes:

a generating module 800, configured to generate indication information according to a logical channel group with a cached data amount;

a processing module 801, configured to place, according to the order indicated by the indication information, the buffer data size of at least one logical channel group that can be currently reported in a buffer status report media access control unit BSR MAC CE, and place the indication information in the BSR MAC CE;

a reporting module 802, configured to report the buffer status report to a network device.

Optionally, the processing module 801 is further configured to:

before reporting the buffer status report to the network side, determining the length of the BSR MAC CE according to the number of the logical channel groups which need to report the buffer data volume.

Optionally, the BSR MAC CE format includes a full BSR MAC CE and a truncated BSR MAC CE;

the processing module 801 is specifically configured to:

if the format of the BSR MAC CE is complete BSR MAC CE, the buffer data volume of all logical channel groups which can be reported currently is arranged in the BSR MAC CE according to the sequence indicated by the indication information; or

And if the format of the BSR MAC CE is the truncated BSR MAC CE, the buffer data volume of a part of logical channel group which can be reported currently is arranged in the BSR MAC CE according to the sequence indicated by the indication information.

Optionally, the processing module 801 is further configured to:

before reporting a buffer status report to a network side device, information for indicating the type of the BSR MAC CE is placed in a MAC subheader corresponding to the BSR MAC CE.

Optionally, the processing module 801 is further configured to:

indicating that the corresponding MAC CE is BSRMAC CE through 1 LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicating that the corresponding MAC CE is complete BSR MAC CE or truncated BSR MAC CE by using CE Type; or

And using two LCID values in the MAC subheader corresponding to the BSR MAC CE to respectively 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, each bit in the bitmap corresponds to a logical channel group, and a value on the bit indicates whether to report a buffer data amount of the corresponding logical channel group, or a value on the bit indicates whether there is a buffer data amount of the corresponding logical channel group.

As shown in fig. 9, a first network-side device according to an embodiment of the present invention includes:

a receiving module 900, configured to receive a buffer status report reported by a terminal;

a determining module 901, configured to determine, according to the indication information of the buffer status report, a corresponding logical channel group carrying a buffer data amount 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 buffer data amount.

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

Optionally, the determining module 901 is further configured to:

and determining the type of the corresponding BSR MAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader.

Optionally, the determining module 901 is specifically configured to:

if the combination of the LCID and the CE Type is used as information for indicating the Type of the BSR MAC CE, determining the Type of the BSR MAC CE according to the CE Type after determining that the corresponding MAC CE is the BSR MAC CE according to 1 LCID value in the MAC subheader corresponding to the BSRMAC CE; or

And if the LCID value is used for indicating the information of the BSR MAC CE type, determining the BSR MAC CE type according to the LCID value in the MAC subheader corresponding to the BSR MAC CE, wherein different LCID values are specifically used for indicating whether the BSR MAC CE is complete or truncated.

Optionally, if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes buffer data volumes of all logical channel groups that the terminal can currently report; or

And if the BSR MAC CE is a truncated BSR MAC CE, the BSR MAC CE comprises the buffer data volume of a part of logical channel group which can be reported currently by the terminal.

Optionally, the determining module 901 is further configured to:

determining the length of the BSR MAC CE according to the number of the logical channel groups corresponding to the amount of the carried cache data indicated by the indication information; or

And if the BSR MAC CE is reported as a padding BSR, determining the length of the BSR MAC CE and the MAC sub-PDU length consisting of 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 consisting of other loads, wherein the other loads comprise MAC SDUs and/or other MAC CEs except the BSR MAC CE.

As shown in fig. 10, a second terminal according to the embodiment of the present invention includes:

a processor 1001 for transmitting and receiving data through a transceiver 1002 and reading a program in a memory 1004, and performing the following processes:

generating indication information according to the logic channel group with the cache data volume; according to the sequence indicated by the indication information, the buffer data volume of at least one logical channel group which can be reported currently is placed in a buffer status report media access control unit (BSR MAC CE), and the indication information is placed in the BSR MAC CE; and reporting the buffer status report to the network side equipment.

A transceiver 1002 for receiving and transmitting data.

Optionally, the processor 1001 is further configured to:

the processor 1001 is specifically configured to:

Optionally, the processor 1001 is further configured to:

In fig. 10, a bus architecture (represented by bus 1000), bus 1000 may include any number of interconnected buses and bridges, and bus 1000 links together various circuits including one or more processors, represented by general purpose processor 1001, and memory, represented by memory 1004. The bus 1000 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. A bus interface 1003 provides an interface between the bus 1000 and the transceiver 1002. The transceiver 1002 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. For example: the transceiver 1002 receives external data from other devices. The transceiver 1002 is used to transmit data processed by the processor 1001 to other devices. Depending on the nature of the computing system, a user interface 1005, such as a keypad, display, speaker, microphone, joystick, may also be provided.

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

Alternatively, the processor 1001 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

As shown in fig. 11, a second network-side device according to the embodiment of the present invention includes:

a processor 1101 for transmitting and receiving data through the transceiver 1102 and reading a program in the memory 1104, and performing the following processes:

receiving a buffer status report reported by a terminal; and determining a corresponding logical channel group carrying the buffer data volume in the BSR MAC CE of the buffer status report according to the indication information of the buffer status report, wherein the indication information is generated by the terminal according to the logical channel group with the buffer data volume.

A transceiver 1102 for receiving and transmitting data.

Optionally, the processor 1101 is further configured to:

Optionally, the processor 1101 is specifically configured to:

Optionally, the processor 1101 is further configured to:

In fig. 11, a bus architecture (represented by bus 1100), bus 1100 may include any number of interconnected buses and bridges, bus 1100 linking together various circuits including one or more processors, represented by processor 1101, and memory, represented by memory 1104. The bus 1100 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. A 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 means for communicating with various other apparatus over a transmission medium. Data processed by the processor 1101 is transmitted over a wireless medium via the antenna 1105, and further, the antenna 1105 receives and transmits data to the processor 1101.

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

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

Based on the same inventive concept, the embodiment of the present invention further provides a method for reporting a buffer status report by a terminal, and since a device corresponding to the method is a terminal in the system for reporting a buffer status report according to the embodiment of the present invention, and a principle of solving problems of the method is similar to that of the system, the implementation of the method can refer to the implementation of the system, and repeated details are omitted.

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

step 1200, the terminal generates indication information according to the logic channel group with the cache data volume;

step 1201, the terminal places the buffer data volume of at least one logical channel group that can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information, and places the indication information in the BSR MAC CE;

step 1202, the terminal reports a buffer status report to a network side device.

Optionally, before the terminal reports the buffer status report to the network side, the method further includes:

and the terminal determines the length of the BSR MAC CE according to the number of the logical channel groups which need to report the buffer data volume.

the terminal places the buffer data volume of at least one logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information, and the method comprises the following steps:

if the format of the BSR MAC CE is complete BSR MAC CE, the terminal places the buffer data volume of all logical channel groups which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information; or

And if the format of the BSR MAC CE is the truncated BSR MAC CE, the terminal places the buffer data volume of the partial logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information.

Optionally, before the terminal reports the buffer status report to the network side device, the method further includes:

and the terminal places information for indicating the type of the BSR MAC CE into the MAC subheader corresponding to the BSR MAC CE.

Optionally, the terminal indicates, through 1 logical channel number LCID value in the MAC subheader corresponding to the BSR MAC CE, that the corresponding MAC CE is the BSR MAC CE, and further indicates, by using a CE Type, that the corresponding MAC CE is the complete BSR MAC CE or the truncated BSR MAC CE; or

And the terminal respectively uses the two LCID values in the MAC subheader corresponding to the BSR MAC CE to indicate that the BSRMAC CE is a complete BSR MAC CE or a truncated BSR MAC CE.

Based on the same inventive concept, the embodiment of the present invention further provides a method for a network side device to receive a buffer status report, because the device corresponding to the method is the network side device in the system for reporting the buffer status report according to the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the system, the implementation of the method can refer to the implementation of the system, and repeated details are not repeated.

As shown in fig. 13, the method for receiving the buffer status report by the network side device in the embodiment of the present invention includes:

step 1300, the network side equipment receives a buffer status report reported by the terminal;

step 1301, the network side device determines, according to the indication information of the buffer status report, a corresponding logical channel group carrying a buffer data volume 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 having the buffer data volume.

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

Optionally, after the network side device receives the buffer status report reported by the terminal, the method further includes:

and the network side equipment determines the type of the corresponding BSR MAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader.

Optionally, the determining, by the network side device, the type of the BSR MAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader includes:

if the combination of the LCID and the CE Type is used to indicate information of the BSR MAC CE Type, the network side device determines the Type of the BSR MAC CE according to the CEType after determining that the corresponding MAC CE is the BSR through 1 LCID value in the MAC subheader corresponding to the BSR MAC CE; or

If the LCID value is used to indicate information of the BSR MAC CE type, 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 the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE.

the network side equipment determines the length of the BSR MAC CE according to the number of the logical channel groups corresponding to the amount of the carried cache data indicated by the indication information; or

If the BSR MAC CE is reported as a padding BSR, the network side device determines the length of the BSR MAC CE and the length of the MAC sub-PDU composed of MAC sub-headers corresponding to the BSR MAC CE according to the length of the MAC PDU and the lengths of MAC sub-PDUs composed of other loads, where the other loads include MAC SDUs and/or other MACCEs except the BSR MAC CE.

Embodiments of the present invention also provide a storage medium, which may be non-volatile, that is, the content is not lost after power is turned off. The storage medium stores a software program, and the software program, when read and executed by one or more processors, may implement any of the above schemes for reporting a buffer status report according to the embodiments of the present invention.

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., and can be connected through an external interface; for example, the memory is a memory module in the device in which the processor is located, and may be connected through an internal interface.

Embodiments of the present invention further provide a computer program product, where the software program, when being read and executed by one or more processors, may implement any of the above schemes for reporting a buffer status report in the embodiments of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for reporting a buffer status report, the method comprising:

the terminal reports a buffer status report to the network side equipment;

the step of placing, by the terminal, the buffer data volume of at least one logical channel group that can be currently reported in the BSR MAC CE according to the sequence indicated by the indication information includes:

if the format of the BSR MAC CE is a truncated BSR MAC CE, the terminal places the buffer data volume of a part of logical channel group which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information;

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

2. The method of claim 1, wherein before the terminal reports the buffer status report to the network side, the method further comprises:

3. The method of claim 1, wherein the terminal places the buffer data size of the at least one logical channel group that can be currently reported in the BSR MAC CE according to the order indicated by the indication information, further comprising:

and if the format of the BSR MAC CE is the complete BSR MAC CE, the terminal places the buffer data volume of all the logical channel groups which can be reported currently in the BSR MAC CE according to the sequence indicated by the indication information.

4. The method according to claim 1 or 3, wherein before the terminal reports the buffer status report to the network side device, the method further comprises:

5. The method of claim 4, wherein the terminal indicates the corresponding MAC CE as BSR MAC CE by 1 logical channel number LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicates whether it is a complete BSR MAC CE or a truncated BSR MAC CE with a CE Type; or

And the terminal respectively 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.

6. A method for reporting a buffer status report, the method comprising:

the network side equipment determines a corresponding logical channel group carrying a cache data volume in the BSRMAC CE of the cache state report according to the indication information of the cache state report, wherein the indication information is generated by the terminal according to the logical channel group with the cache data volume;

after the network side device receives the buffer status report reported by the terminal, the method further includes:

the network side equipment determines the type of the corresponding BSRMAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader;

the network side device determines the type of the corresponding BSRMAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader, and the method comprises the following steps:

if the combination of the LCID and the CE Type is used to indicate information of the BSR MAC CE Type, the network side device determines the Type of the BSR MAC CE according to the CE Type after determining that the corresponding MAC CE is the BSR through 1 LCID value in the MAC subheader corresponding to the BSR MAC CE; or

If the LCID value is used for indicating information of the BSR MAC CE type, 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 for indicating whether the BSR MAC CE is a complete BSR MAC CE or a truncated BSR MAC CE;

if the BSR MAC CE is a truncated BSR MAC CE, the BSR MAC CE comprises the buffer data volume of a part of logical channel group which can be reported currently by the terminal;

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 cache data volume of the corresponding logical channel group or whether the value on the bit indicates that the corresponding logical channel group has the cache data volume.

7. The method of claim 6, wherein if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes buffer data amounts of all logical channel groups that the terminal can currently report.

8. The method according to claim 6 or 7, wherein after the network side device receives the buffer status report reported by the terminal, the method further comprises:

If the BSR MAC CE is a padding BSR report, the network side device determines the length of the BSR MAC CE and the length of the MAC sub-PDU composed of MAC sub-headers corresponding to the BSR MAC CE according to the length of the MAC protocol data unit PDU and the lengths of MAC sub-PDUs composed of other loads, where the other loads include MAC SDUs and/or other MAC CEs except the BSR MAC CE.

9. A terminal for reporting a buffer status report, the terminal comprising:

the reporting module is used for reporting the buffer status report to the network side equipment;

the processing module is specifically configured to:

if the format of the BSR MAC CE is a truncated BSR MAC CE, the buffer data volume of a part of logical channel group which can be reported currently is arranged in the BSR MAC CE according to the sequence indicated by the indication information;

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 cache data volume of the corresponding logical channel group, or the value on the bit indicates whether the cache data volume of the corresponding logical channel group exists.

10. The terminal of claim 9, wherein the processing module is further configured to:

11. The terminal of claim 9, wherein the processing module is further configured to:

and if the format of the BSR MAC CE is the complete BSR MAC CE, the buffer data volume of all the logical channel groups which can be reported currently is arranged in the BSR MAC CE according to the sequence indicated by the indication information.

12. The terminal of claim 9 or 11, wherein the processing module is further configured to:

13. The terminal of claim 12, wherein the processing module is further configured to:

indicating the corresponding MAC CE as the BSR MAC CE through 1 LCID value in the MAC subheader corresponding to the BSR MAC CE, and further indicating the MAC CE as the complete BSR MAC CE or the truncated BSR MAC CE by using CE Type; or

14. A network side device for reporting a buffer status report, the network side device comprising:

a determining module, configured to determine, according to the indication information of the buffer status report, a corresponding logical channel group that carries a buffer data volume in the BSR MACCE of the buffer status report, where the indication information is generated by the terminal according to the logical channel group with the buffer data volume;

wherein the determining module is further configured to:

determining the type of the corresponding BSR MAC CE according to the information used for indicating the type of the BSR MAC CE in the MAC subheader;

the determining module is specifically configured to:

if the combination of the LCID and the CE Type is used as information for indicating the Type of the BSR MAC CE, determining the Type of the BSR MAC CE according to the CE Type after determining that the corresponding MAC CE is the BSR MAC CE according to 1 LCID value in the MAC subheader corresponding to the BSR MAC CE; or

If the LCID value is used for indicating the information of the BSR MAC CE type, determining the BSR MAC CE type according to the LCID value in the MAC subheader corresponding to the BSR MAC CE, wherein different LCID values are specifically used for indicating whether the BSR MAC CE is complete or truncated;

15. The network-side device of claim 14, wherein if the BSR MAC CE is a complete BSR MAC CE, the BSR MAC CE includes buffer data volumes of all logical channel groups that the terminal can currently report.

16. The network-side device of claim 14 or 15, wherein the determining module is further configured to:

determining the length of the BSRMAC CE according to the number of the logical channel groups corresponding to the amount of the carried cache data indicated by the indication information; or