CN106535246B

CN106535246B - Method, device and system for reporting buffer status report

Info

Publication number: CN106535246B
Application number: CN201510580089.8A
Authority: CN
Inventors: 刘旭; 戴谦; 邹伟; 艾建勋
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2021-03-16
Anticipated expiration: 2035-09-11
Also published as: CN106535246A; WO2016177221A1

Abstract

The invention discloses a method, a device and a system for reporting a buffer status report, wherein the method comprises the following steps: the method includes that user equipment receives format configuration information of a Buffer Status Report (BSR) sent by a base station, wherein the format configuration information of the BSR includes: format of super real time service dedicated buffer status report (S-BSR); when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported, the user equipment reports the state report of the special buffer area for the super real-time service in the form of the state report of the special buffer area for the super real-time service. The method, the device and the system for reporting the buffer status report can realize that the connected user equipment reports the buffer status report of the super real-time service to the base station.

Description

Method, device and system for reporting buffer status report

Technical Field

The present invention relates to wireless communication technologies, and in particular, to a method, an apparatus, and a system for reporting a buffer status report.

Background

The rapid development of mobile internet, internet of things and other business applications has become a main driving force for the development of fifth generation mobile communication technology (5G), and they urgently require that 5G has an access rate comparable to that of optical fibers, a connecting capability of billions of devices, a perfect real-time experience and a wireless broadband access capability anytime and anywhere. In addition, important indexes such as energy consumption efficiency, spectral efficiency and peak rate also need to be comprehensively considered in the design of the 5G system. China has established the IMT-2020(5G) push group in 2013 to drive the development of 5G technology. It is expected that a 5G vision, critical capacity requirements and spectrum planning will develop in 2015, according to the international global situation; the 5G standardization work will then be initiated and is scheduled to begin business after 2020. In terms of international standards, the technical standards of the long term evolution Advanced (LTE-Advanced) are mainly set by the international organization for standardization of the third generation partnership project (3 GPP). The industry has preliminarily concluded that 5G-oriented standard research work is expected to be initiated in 2016 at the 3GPP Release 14(R14) Release stage.

In future mobile network applications, the traffic demand, the number of terminals and the types of terminals will all show explosive growth trend. As one of the important scenarios and technical means of 5G, Machine Type Communication (MTC) is receiving increasing attention. In general, there are four main requirements for machine-to-machine communication: huge connection, low energy consumption, low time delay and high reliability. The number of the MTC equipment of a huge number of connectors is more than 10 times of that of the existing human-to-human communication terminals; the low energy consumption is reflected in that the MTC terminal has the characteristic of huge quantity, so the energy-saving significance is different; low latency and high reliability are reflected in MTC devices having an end-to-end latency of 1 millisecond or less. The MTC equipment often needs to transmit super real-time service data, so that the data processing center can conveniently analyze and process the service data in time or further make corresponding actions; therefore, research on the ultra-real-time service and the time delay becomes an important technical point in the MTC research process.

In a Long Term Evolution (LTE) system, a Buffer Status Report (BSR) is an important basis for a base station to allocate resources to a user equipment. A Logical Channel Group (LCG) is defined in the BSR, and a base station assigns each Logical Channel to a corresponding LCG according to a quality of service (QoS) attribute thereof through Radio Resource Control (RRC). Thus, the user equipment only needs to report the BSR for each LCG. There are two formats for the existing BSR: one is Short BSR (Short BSR) or Truncated BSR (Truncated BSR), as shown in fig. 1, the format thereof consists of an LCG sequence number (ID) field and a corresponding Buffer Size (Buffer Size), and when only one LCG has data to be transmitted, the Short BSR or Truncated BSR is reported; the other is a long BSR (long BSR), as shown in fig. 2, which includes 4 Buffer sizes corresponding to LCG IDs (0-3), and when more than one LCG of the ue has data to transmit, the long BSR is triggered to report, and the long BSR reports the Buffer sizes of all the LCGs to the base station together. The existing LCG ID field is 2 bits (bit) long, so there are 4 LCGs that can be identified.

With the diversification of service requirements, the application of the current super real-time service is more common. If a plurality of LCGs (services with higher priority than the existing LCGs) are defined in the existing LCGs, the differentiation of the original services is inevitably affected to a certain extent. If a mode of increasing the length of the LCG ID in the BSR is adopted, on one hand, the problem of incompatibility can be generated, on the other hand, the BSR becomes larger obviously, and for the super real-time service, more time delay and resource waste are inevitably brought by reporting a larger BSR; in addition, in the future, 5G may transmit BSR with a shorter Transmission Time Interval (TTI), and increasing the length of the LCG ID will bring further limitation to BSR.

Disclosure of Invention

In order to solve the above technical problem, the present invention provides a method, an apparatus, and a system for reporting a buffer status report, which can enable a connected ue to report a buffer status report of a super real-time service to a base station.

In order to achieve the above technical object, the present invention provides a method for reporting a buffer status report, including: a User Equipment (UE) receives format configuration information of a Buffer Status Report (BSR) sent by a base station, wherein the format configuration information of the BSR comprises: format of super real time service dedicated buffer status report (S-BSR); and when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported, the user equipment reports the state report of the special buffer area for the super real-time service in the format of the state report of the special buffer area for the super real-time service.

The invention also provides a method for reporting the buffer status report, which comprises the following steps: the base station sends format configuration information of a buffer status report to user equipment, wherein the format configuration information of the buffer status report comprises: format of buffer status report dedicated to super real-time service; and the base station receives a buffer area state report reported by the user equipment and determines the Transmission Time Interval (TTI) length of the resource to be allocated according to the buffer area state report.

The present invention also provides a device for reporting a buffer status report, which is arranged in a user equipment, and comprises: a receiving module, configured to receive format configuration information of a buffer status report BSR sent by a base station, where the format configuration information of the buffer status report includes: the format of a special buffer status report (S-BSR) for the super real-time service; a sending module, configured to report, when the ue detects that a super-real-time service dedicated buffer status report needs to be reported, the super-real-time service dedicated buffer status report in the format of the super-real-time service dedicated buffer status report.

The invention also provides a device for reporting the buffer status report, which is arranged in the base station and comprises: a sending module, configured to send format configuration information of a buffer status report to a user equipment, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service; and the processing module is used for receiving the buffer area state report reported by the user equipment and determining the Transmission Time Interval (TTI) length of the resources to be allocated according to the buffer area state report.

The invention also provides a system for reporting the buffer status report, which comprises: user equipment and a base station; the base station is configured to send format configuration information of a buffer status report to the ue, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service; the user equipment is used for reporting the super real-time service special buffer area status report in a format of the super real-time service special buffer area status report when the condition that the super real-time service special buffer area status report needs to be reported is detected; and the base station is used for receiving the buffer area state report reported by the user equipment and determining the Transmission Time Interval (TTI) length of the resource to be allocated according to the buffer area state report.

In the present invention, a user equipment receives format configuration information of a BSR sent by a base station, wherein the format configuration information of the BSR includes: format of super real time service dedicated buffer status report (S-BSR); when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported, the user equipment reports the state report of the special buffer area for the super real-time service in the form of the state report of the special buffer area for the super real-time service. Therefore, the buffer area state report of the super real-time service reported by the connected user equipment to the base station is realized. The invention not only satisfies the compatibility with the prior buffer status report, but also achieves the purpose of identifying the logical channel group of the super real-time service by setting the special buffer status report for the super real-time service, and simultaneously, the user equipment has the capability of reporting the buffer status report of the super real-time service (the priority is higher than that of the common service).

In the embodiment of the invention, the reporting delay of the special buffer status report (S-BSR) for the super real-time service is effectively reduced by a reasonable buffer status report reporting mode and by configuring a special periodic special buffer status report timer (periodic S-BSR) for the super real-time service and a special buffer status report timer (RETX S-BSR) for the retransmission super real-time service by a base station. In addition, the base station determines the TTI length of the resource to be allocated according to the buffer status report reported by the user equipment, thereby realizing the optimal allocation of the resource.

Drawings

Fig. 1 is a schematic diagram of a format of a short BSR or a truncated BSR in an existing LTE system;

fig. 2 is a schematic diagram of a format of a long BSR in an existing LTE system;

fig. 3 is a flowchart of a method for reporting a buffer status report according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a long S-BSR in a first format according to an embodiment of the present invention;

fig. 5 is another schematic diagram of a long S-BSR in a first format according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a long S-BSR in a second format according to an embodiment of the present invention;

fig. 7 is another schematic diagram of a long S-BSR in a second format according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention;

fig. 9 is a schematic diagram illustrating a reporting process of a buffer status report according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the embodiments described below are only for illustrating and explaining the present invention and are not intended to limit the present invention.

Fig. 3 is a flowchart of a method for reporting a buffer status report according to an embodiment of the present invention. As shown in fig. 3, the method for reporting a buffer status report provided in this embodiment includes the following steps:

step 11: a User Equipment (UE) receives format configuration information of a Buffer Status Report (BSR) sent by a base station, wherein the format configuration information of the buffer status report comprises: format of the super real time service dedicated buffer status report.

Wherein, the format of the super real-time service special buffer status report (S-BSR) comprises: a short or truncated S-BSR, a long S-BSR in a first format, a long S-BSR in a second format; wherein short or truncated S-BSR refers to: only mapping BSR of the data size of one LCG buffer zone in a super real-time service Logic Channel Group (LCG); the long S-BSR of the first format refers to: the BSR of the data size of all LCG buffer areas of the super real-time service is mapped; the long S-BSR of the second format refers to: the BSR of the data size of the LCG buffer area of the super real-time service and the data size of the LCG buffer area of the common service can be mapped.

Specifically, the base station notifies the user equipment of format configuration information of the buffer status report by configuring an S-BSR related field in a Media Access Control (MAC) layer Control parameter. In an embodiment, the format configuration information of the buffer status report includes: a long S-BSR of the first format and/or a long S-BSR of the second format. Alternatively, the format configuration information may include, for example, a short or truncated S-BSR, a long S-BSR in a first format, and/or a long S-BSR in a second format. In practical applications, the format configuration information of the buffer status report further includes: short or truncated BSRs of existing buffer status reports and long BSRs.

Step 12: when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported, the user equipment reports the state report of the special buffer area for the super real-time service in the form of the state report of the special buffer area for the super real-time service.

The method comprises the following steps that when the user equipment detects at least one of the following events, a buffer status report special for the super real-time service is triggered and reported:

any one of all logic channels of a super real-time service Logic Channel Group (LCG) has data to be sent;

a periodic super real-time service dedicated buffer status report timer (periodic S-BSR timer) times out;

the retransmission super real-time service dedicated buffer status report timer (reTX S-BSR) times out;

the number of padding bits (padding bits) is greater than or equal to the sum of the number of bits of a Media Access Control (MAC) control unit and a corresponding subheader of the super real-time service dedicated buffer status report.

Before step 12, the method further comprises: the user equipment receives the configured periodic super real-time service special buffer status report timer and the retransmission super real-time service special buffer status report timer from the base station.

Here, step 12 includes:

when the format configuration information includes a short or truncated S-BSR, a long S-BSR in a first format: if only the state report of the buffer special for the super real-time service needs to be reported, sending a short or truncated S-BSR or a long S-BSR with a first format in a Media Access Control Protocol Data Unit (MAC PDU); if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported and the current resource quantity used for sending the buffer area state report is larger than or equal to a preset value, simultaneously sending a long S-BSR and the state report of the common service buffer area in a first format in one MAC PDU, or simultaneously sending a short or truncated S-BSR and the state report of the common service buffer area in one MAC PDU; if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported and the current resource quantity used for sending the state report of the buffer area is less than a preset value, the long S-BSR in the first format is preferentially sent in one MAC PDU, or the short or truncated S-BSR is preferentially sent;

when the format configuration information includes a short or truncated S-BSR, a long S-BSR in a second format: if only the state report of the special buffer area for the super real-time service needs to be reported, sending a short or shortened S-BSR or a long S-BSR in a second format in one MAC PDU; if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported, sending the long S-BSR with the second format in one MAC PDU, and canceling reporting of the single state report of the common service buffer area;

when the format configuration information includes a short or truncated S-BSR, a long S-BSR in a first format, and a long S-BSR in a second format: if only the state report of the special buffer area for the super real-time service needs to be reported, sending a short or shortened S-BSR, a long S-BSR in a first format or a long S-BSR in a second format in one MAC PDU; if a super real-time service dedicated buffer status report and a common service buffer status report need to be reported and the current resource amount for sending the buffer status report is greater than or equal to a preset value, simultaneously sending a long S-BSR in a first format and the common service buffer status report in one MAC PDU, or simultaneously sending a short or truncated S-BSR and the common service buffer status report in one MAC PDU, or sending a long S-BSR in a second format in one MAC PDU and canceling reporting of a single common service buffer status report; and if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported and the current resource quantity for sending the buffer area state report is less than a preset value, preferentially sending the short or truncated S-BSR or preferentially sending the long S-BSR in the first format in one MAC PDU.

Here, step 12 further includes: and the user equipment identifies the format of the buffer status report through an LCID (logical link identification) domain configured in a subheader of the MAC PDU of the uplink shared channel.

In addition, an embodiment of the present invention further provides a method for reporting a buffer status report, including: the base station sends format configuration information of a buffer status report to user equipment, wherein the format configuration information of the buffer status report comprises: format of buffer status report dedicated to super real-time service; and the base station receives the buffer area state report reported by the user equipment and determines the Transmission Time Interval (TTI) length of the resource to be allocated according to the buffer area state report.

Specifically, when the buffer status report received by the base station includes a super real-time service dedicated buffer status report and the data volume of the super real-time service LCG buffer indicated by the super real-time service dedicated buffer status report is greater than zero, the base station allocates a resource with a short TTI length, a resource with a common TTI length or a plurality of TTI lengths for the super real-time service, wherein the short TTI is a TTI with a length less than 1 millisecond, and the common TTI is a TTI with a length equal to 1 millisecond.

The present invention will be specifically described below with reference to a plurality of specific examples.

Example one

In this embodiment, a format of a super real-time service dedicated buffer status report (hereinafter referred to as S-BSR) provided by the present invention is specifically described.

Specifically, the S-BSRs are classified into short S-BSRs or truncated S-BSRs and Long S-BSRs, and in this embodiment, the Long (Long) S-BSRs is classified into two format types, i.e., a first format and a second format, according to whether the common service buffer status report is supported. The long S-BSR in the first format only has the capacity of reporting the state report of the super real-time service buffer, namely the data size of the logical channel group buffer corresponding to the super real-time service can only be mapped; the long S-BSR in the second format has the capability of reporting both the super real-time service buffer status report and the normal service status report, i.e., the size of the logical channel group buffer corresponding to the super real-time service and the size of the logical channel group buffer corresponding to the normal service can be mapped.

In this embodiment, the domain length of the LCG ID of the long S-BSR is 1bit (bit), 2bit or other values. When the domain length of the LCG ID of the long S-BSR in the first format is 1bit, two super real-time services LCG can be mapped, and when the logic channel group of the existing common service is marked as LCG (0-3), the two super real-time services LCG mapped at the moment can be marked as LCG 4 and LCG 5. The priorities of the LCGs (4-5) are higher than those of the LCGs (0-3), and the LCGs 4 and 5 map the super real-time services with different priorities. The long S-BSR in the first format, which is formed by the size of the super real-time service buffer data volume mapped by LCG (4-5), is shown in FIG. 4. The "R" is a reserved bit and is now set to 0, however, the invention is not limited to the position of the "R", and in other embodiments, other positions may be selected.

Optionally, when the domain length of the LCG ID of the long S-BSR in the first format is 2 bits, four super real-time services LCGs may be mapped, and when the logical channel group of the existing common service is marked as LCG (0 to 3), the four super real-time services LCGs mapped at this time may be marked as LCG 4, LCG 5, LCG6, and LCG 7. The priorities of the LCGs (4-7) are all higher than the priorities of the LCGs (0-3), and the LCGs (4-7) map the super real-time services with different priorities. The long S-BSR in the first format, which is formed by the size of the super real-time service buffer data volume mapped by LCG (4-7), is shown in FIG. 5.

When the domain length of the LCG ID of the long S-BSR in the second format is 1bit, two super real-time services LCG can be mapped. When the logical channel group of the existing common service is marked as LCG (0-3), the two LCGs of the super real-time service mapped at the moment can be marked as LCG 4 and LCG 5. Since the long S-BSR of the second format has the capability of reporting the status reports of the super real-time service and the common service buffer simultaneously, the size of the buffer data of the super real-time service LCGs (4-5) and the common service LCGs (0-3) is mapped by the long S-BSR of the second format, as shown in fig. 6.

Optionally, when the domain length of the LCG ID of the long S-BSR of the second format is 2 bits, four super real-time services LCGs may be mapped. When the logical channel group of the existing common service is marked as LCG (0-3), the four super real-time services LCG mapped at this time can be marked as LCG 4, LCG 5, LCG6, and LCG 7. The long S-BSR in the second format, which is formed by the size of the data volume of the four super real-time service LCG buffers and the size of the data volume of the four common service LCG buffers, is shown in fig. 7.

The domain length of LCG ID of S-BSR can be selected according to the grade division requirement of the user super real-time service priority. When the super real-time service priority level division needs to be less than or equal to two, the domain length of the LCG ID is selected to be 1 bit; when the super real-time service priority level division needs to be more than two, the domain length of the LCG ID can be selected to be 2 bits.

In this embodiment, the base station may configure the long S-BSR in the first format or the second format for the ue, and may also configure the long S-BSR in the first format and the second format for the ue. The user equipment selects a suitable S-BSR format, for example, according to the characteristics of buffer data in the current TTI and the resource situation available for sending the buffer status report. Specifically, when both the common service LCG and the super real-time service LCG (more than one) in the current TTI have data to transmit, the long S-BSR in the second format may be selected; when only super real-time service LCG (more than one) has data to be sent in the current TTI, the long S-BSR in the first format or the long S-BSR in the second format can be selected; if only one LCG in the super real-time service LCG has data to be sent, the short or truncated S-BSR can be selected.

In this embodiment, the format of the S-BSR is indicated by the LCID field in the MAC PDU subheader, and one S-BSR MAC control element (control element) corresponds to one MAC subheader. Due to the introduction of the S-BSR, the LCID value in the MAC PDU subheader also needs to be configured accordingly, as shown in table 1. In the original LCID value, a part of LCID values are reserved, and a part can be selected from the LCID values to be used as related indication of S-BSR, in the embodiment, the '10101' is selected to indicate the S-BSR, the '10001' is used to indicate the shortened S-BSR, the '10010' is used to indicate the short S-BSR, the '10011' is used to indicate the long S-BSR in the first format, the '10100' is used to indicate the long S-BSR in the second format, and the '10101' is used to indicate the filling of the S-BSR; however, the present invention is not limited to the selection of the indication value.

TABLE 1

Index	LCID value
		00000	Common control channel (Category 0 user)
00001-01010	Logical channel identification
		01011	Common control channel (other users)
01100-10000	Reservation
		10001	Truncated S-BSR
10010	Short S-BSR
		10011	Long S-BSR (first format)
10100	Long S-BSR (second Format)
		10101	Padding S-BSR

10110	Truncated short side link BSR
		10111	Edge link BSR
11000	Dual connection power reservation reporting
		11001	Extended power reservation reporting
11010	Power reservation reporting
		11011	C-RNTI
11100	Truncated BSR
		11101	Short BSR
11110	Long BSR
		11111	Filling in

Example two

In this embodiment, a reporting trigger condition of the super real-time service dedicated buffer status report (S-BSR) provided in this embodiment is described.

Specifically, the reporting of the S-BSR is triggered when at least one of the following events occurs:

(1) when any one of all logic channels of the super real-time logic channel group has data to be sent, reporting of an S-BSR is triggered, wherein the S-BSR is called a conventional S-BSR;

specifically, when more than one logical channel group in the super real-time logical channel group has data to send, selecting a first-format long S-BSR or a second-format long S-BSR for reporting, wherein the specific selection of the S-BSR format depends on the format configuration of the S-BSR of the user equipment and whether data needs to be sent in the common traffic logical channel group in the current TTI, and if the second format exists in the format configuration of the long S-BSR of the user equipment and data needs to be sent in the common traffic logical channel group, at this time, selecting the second-format long S-BSR for reporting and canceling the reporting of the common traffic BSR, or selecting the first-format long S-BSR for reporting; if only one logical channel group in the super real-time logical channel group has data to be sent, then a short or truncated S-BSR can be selected for reporting, if the common service logical channel group also has data to be sent in the current TTI, then a long S-BSR in a second format can be selected for reporting, and the reporting of the common service BSR is cancelled;

(2) when a periodic super real-time service special buffer status report timer (periodic S-BSR timer) is overtime, reporting of an S-BSR is triggered, and the S-BSR is called a periodic S-BSR;

specifically, when the periodic S-BSR timer is overtime, the S-BSR can be reported according to a reporting mode of fixed configuration or according to a mode adopted by the previous period;

(3) when a state report timer (reTX S-BSR timer) of a special buffer zone for retransmitting the super real-time service is overtime, the report of the S-BSR is triggered; such an S-BSR is called a conventional S-BSR;

specifically, if the S-BSR is triggered and the ue receives an uplink grant for new data transmission in the TTI, the reTX S-BSR timer is started or restarted; starting or restarting a periodic S-BSR timer in addition to the truncated S-BSR;

when the retX S-BSR timer is overtime, reporting the S-BSR according to a fixedly configured reporting mode or reporting the S-BSR according to a mode adopted last time;

(4) when the number of padding bits (padding bits) is equal to or greater than the size of the "S-BSR MAC control element + corresponding subheader", the user equipment uses these bits to send the S-BSR and will trigger the reporting of the S-BSR; such an S-BSR is called a padding S-BSR;

specifically, if the filling bit number is greater than or equal to the sum of the bit numbers of the short or truncated S-BSR MAC control unit and the MAC sub-head thereof, but is less than the sum of the bit numbers of the long S-BSR MAC control unit with the first format and the MAC sub-head thereof, and more than one logical channel group has data to send in the current TTI, reporting the short or truncated S-BSR of the logical channel group of the super real-time service with higher priority; if the filling bit number is larger than or equal to the sum of the bit numbers of the long S-BSR MAC control unit in the first format and the MAC subhead thereof, but is smaller than the sum of the bit numbers of the long S-BSR MAC control unit in the second format and the MAC subhead thereof, reporting the long S-BSR in the first format; and if the filling bit number is greater than or equal to the sum of the bit number of the long S-BSR MAC control unit in the second format and the bit number of the MAC subheader of the long S-BSR, reporting the long S-BSR in the second format.

Wherein the regular S-BSR and the periodic S-BSR have higher priority than the padding S-BSR and the normal service BSR.

EXAMPLE III

This embodiment illustrates a case where a general service buffer status report and a super real-time service dedicated buffer status report coexist. Specifically, under the condition that the regular service BSR and the super real-time service S-BSR coexist, optionally, the regular service BSR and the super real-time service S-BSR are simultaneously transmitted in one MAC PDU, as shown in fig. 8, by using the simultaneous transmission manner, the MAC PDU includes MAC Control units of the regular service BSR and the super real-time service S-BSR, and meanwhile, corresponding two sub-headers are corresponding to each other at a sub-header of the MAC, different BSRs are identified in the sub-headers by LCID values, and the LCID values are configured by the base station through Radio Resource Control (RRC) signaling; optionally, the common service BSR and the super real-time service S-BSR are separately developed and transmitted in one MAC PDU, that is, either the common service BSR or the super real-time service S-BSR is transmitted in one MAC PDU.

Specifically, the user equipment selects a sending mode of the buffer status report according to the common service BSR, the condition that the super real-time service S-BSR is triggered, the format configuration condition of the long S-BSR and the resource condition for sending the buffer status report. When the long S-BSR or the short or truncated S-BSR in the first format of the common service BSR and the super real-time service is triggered and the resource for sending the buffer status report is sufficient, the long S-BSR or the short or truncated S-BSR in the first format of the common service BSR and the super real-time service can be simultaneously sent; if the resources for sending the buffer status report are limited, a separate sending mode can be selected, and the long S-BSR or the short or truncated S-BSR in the first format is preferentially sent; when the regular service BSR and the long S-BSR of the second format are triggered, a separate transmission mode may be selected, that is, the long S-BSR of the second format is transmitted on one MAC PDU, and separate reporting of the regular service BSR is cancelled.

Example four

Fig. 9 is a schematic diagram illustrating a reporting process of a buffer status report according to an embodiment of the present invention. As shown in fig. 9, this embodiment is specifically explained as follows:

step 901: the user equipment transmits a Radio Resource Control (RRC) connection request to the base station; specifically, the user equipment carries information such as an initial non-access stratum identifier, an establishment reason, an identifier of a super real-time service and the like of the user equipment through an uplink common control channel (UL-CCCH);

step 902: the base station sends RRC connection establishment information to the user equipment, wherein the information comprises LCG attributes configured by the base station and main configuration (MAC-Mainconfig) of a media access control layer related to the super real-time service, the base station configures LCG corresponding to the super real-time service for the user equipment, and the following parameters are added and configured in the MAC-Mainconfig: a periodic super real-time service dedicated buffer status report timer (periodic S-BSR timer), a retransmission super real-time service dedicated buffer status report timer (retX S-BSR timer); for the retX S-BSR timer, the base station needs to set the time configuration of an accurate timer according to the propagation environment of a channel, the processing delay of the base station and the like, wherein the accurate configuration of the retX S-BSR timer is beneficial to reducing the reporting delay of the S-BSR;

step 903: the user equipment sends an RRC connection completion message to the base station;

step 904: when any logical channel of the logical channel group has data to be sent or a buffer area status report is triggered, the user equipment analyzes the buffer area data and determines a proper buffer area status report format and a proper reporting mode;

specifically, the user equipment analyzes data to be sent by the buffer, including analyzing the type of the data, the triggering conditions of a common service BSR and a super real-time service S-BSR, the resource amount which can be used for sending a buffer status report in the current TTI and the length of the TTI, and further determining the reporting mode of the buffer status report and the format selection of the S-BSR;

when the base station configures the long S-BSR with the first format and the long S-BSR with the second format for the user equipment: when the super real-time service S-BSR is triggered, the resource for sending the buffer status report is limited (namely, less than a preset value), and the ordinary service BSR is also triggered, the ordinary service BSR and the super real-time service S-BSR are separately sent, namely, the S-BSR (such as short or truncated S-BSR or long S-BSR in a first format) is preferentially sent in one MAC PDU; when the super real-time service S-BSR is triggered, and resources for sending the buffer status report are sufficient (namely, the resources are more than or equal to a preset value), and the normal service BSR is also triggered, the normal service BSR and the super real-time service S-BSR are selected to be sent separately or simultaneously, if the normal service BSR and the super real-time service S-BS are selected to be sent separately, if the super real-time service has more than one logical channel group with data to be sent, the long S-BSR in the second format can be sent in one MAC PDU, if the normal service BSR and the super real-time service S-BSR are selected to be sent simultaneously, if the super real-time service has more than one logical channel group with data to be sent, the long S-BSR in the first format and the normal service BSR are selected to be sent in;

when the base station is configured with only one long S-BSR format for the user equipment:

for example, when only the long S-BSR of the first format is available, when the super real-time service S-BSR is triggered and the resources for transmitting the buffer status report are sufficient, it may be selected to simultaneously transmit the long S-BSR of the first format and the normal service BSR, or the short or truncated S-BSR and the normal service BSR in one MAC PDU; when the super real-time service S-BSR is triggered and the resource for sending the buffer status report is limited, a long S-BSR or a short or truncated S-BSR with a first format can be preferentially sent in one MAC PDU;

for example, when only the long S-BSR of the second format is available, after the super real-time service S-BSR is triggered, the long S-BSR of the second format or the short or truncated S-BSR is sent in one MAC PDU;

when resources required by the buffer status report have TTI resources with short length, selecting long S-BSR with a first format or short or truncated S-BSR to transmit on the TTI with short length, thereby saving the cost of the TTI resources with short length and accelerating the reporting of the S-BSR;

step 905: the user equipment reports the buffer status report by adopting a determined proper buffer status report format and a reporting mode;

step 906: the base station determines the TTI length of the resource to be allocated according to the buffer status report reported by the user equipment;

when the super-real-time logical channel group has data to send and the base station needs to allocate resources for the super-real-time logical channel group, the base station can select to allocate: resources with short TTI length, resources with common TTI length or resources with different TTI lengths, wherein, the short TTI is the TTI with length less than 1 millisecond, the common TTI is the TTI with length equal to 1 millisecond; specifically, for the user equipment with the capability of short TTI length, and the super real-time service has the characteristic of small data, it is appropriate to allocate the resource with short TTI length for the super real-time service; for the user equipment without short TTI length capability, allocating resources with common TTI length; for users with short TTI length capability and super real-time service with both small data and large data service, resources with different TTI lengths are allocated to the users.

In summary, by designing the buffer status report S-BSR dedicated to the super real-time service, on one hand, the ue can have the capability of reporting the buffer status of the super real-time service; and on the other hand, the base station can allocate TTI resources with proper length for the super real-time service according to the super real-time service buffer status report, thereby reasonably allocating the resources.

In addition, an embodiment of the present invention further provides a device for reporting a buffer status report, where the device is disposed in a user equipment, and the device includes: a receiving module, configured to receive format configuration information of a BSR sent by a base station, where the format configuration information of a buffer status report includes: format of super real time service dedicated buffer status report (S-BSR); and the sending module is used for reporting the state report of the special buffer area for the super real-time service in a format of the state report of the special buffer area for the super real-time service when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported.

The format of the super real-time service S-BSR comprises the following steps: a short or truncated S-BSR, a long S-BSR in a first format, a long S-BSR in a second format; wherein short or truncated S-BSR refers to: only mapping BSR (buffer status report) of the data size of one LCG buffer area in the super real-time service LCG; the long S-BSR of the first format refers to: the BSR of the data size of all LCG buffer areas of the super real-time service is mapped; the long S-BSR of the second format refers to: the BSR of the data size of the LCG buffer area of the super real-time service and the data size of the LCG buffer area of the common service can be mapped.

Herein, the format configuration information of the buffer status report includes: a long S-BSR of the first format and/or a long S-BSR of the second format.

In an embodiment, the sending module is specifically configured to:

when the format configuration information includes a short or truncated S-BSR, a long S-BSR in a first format: if only the state report of the special buffer area for the super real-time service needs to be reported, sending short or truncated S-BSR or long S-BSR in a first format in a media access control protocol data unit (MAC PDU); if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported and the current resource quantity used for sending the buffer area state report is larger than or equal to a preset value, simultaneously sending a long S-BSR and the state report of the common service buffer area in a first format in one MAC PDU, or simultaneously sending a short or truncated S-BSR and the state report of the common service buffer area in one MAC PDU; if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported and the current resource quantity used for sending the state report of the buffer area is less than a preset value, the long S-BSR in the first format is preferentially sent in one MAC PDU, or the short or truncated S-BSR is preferentially sent;

when the format configuration information comprises a short or truncated S-BSR, a long S-BSR in a second format: if only the state report of the special buffer area for the super real-time service needs to be reported, sending a short or shortened S-BSR or a long S-BSR in a second format in one MAC PDU; if the state report of the special buffer area for the super real-time service and the state report of the common service buffer area need to be reported, sending the long S-BSR with the second format in one MAC PDU, and canceling reporting of the single state report of the common service buffer area;

In an embodiment, the sending module is further configured to identify a format of the buffer status report through an LCID field configured in a subheader of the MAC PDU of the uplink shared channel.

In an embodiment, the apparatus further includes: the detection module is used for triggering and reporting the state report of the special buffer area for the super real-time service when at least one of the following events is detected to occur:

any one of all logic channels of the super real-time service LCG has data to be sent;

the state report timer of the special buffer area of the periodic super real-time service is overtime;

the state report timer of the special buffer area for the retransmission super real-time service is overtime;

the number of the filling bit numbers is more than or equal to the sum of the bit numbers of the MAC control unit and the corresponding sub-head of the super real-time service special buffer area state report.

In an embodiment, the receiving module is further configured to receive the configured periodic super real-time service dedicated buffer status report timer and the retransmission super real-time service dedicated buffer status report timer from the base station.

In practical applications, the receiving module is a communication element such as a receiver having information receiving capability, the sending module is a communication element such as a transmitter having information transmitting capability, and the detecting module is an element such as a detector having information detecting capability. However, the present invention is not limited to this, and the functions of the above modules may also be implemented by a processor executing programs/instructions stored in a memory, for example.

In addition, an embodiment of the present invention further provides a device for reporting a buffer status report, where the device is disposed in a base station, and includes: a sending module, configured to send format configuration information of the buffer status report to the user equipment, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service; and the processing module is used for receiving the buffer area state report reported by the user equipment and determining the TTI length of the resources to be allocated according to the buffer area state report.

In an embodiment, the processing module is specifically configured to: and when the received buffer status report comprises a super real-time service special buffer status report and the data volume of the super real-time service LCG buffer area indicated by the super real-time service special buffer status report is more than zero, allocating resources with the length of short TTI (transmission time interval), resources with the length of common TTI or resources with various TTI lengths for the super real-time service, wherein the short TTI is the TTI with the length less than 1 millisecond, and the common TTI is the TTI with the length equal to 1 millisecond.

In practical applications, the sending module is a communication component such as a transmitter having information transmission capability, and the processing module is a component such as a processor having information processing capability. However, the present invention is not limited to this, and the functions of the above modules may also be implemented by a processor executing programs/instructions stored in a memory, for example.

In addition, an embodiment of the present invention further provides a system for reporting a buffer status report, including: user equipment and a base station; the base station is configured to send format configuration information of the buffer status report to the user equipment, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service; the user equipment is used for reporting the super-real-time service special buffer area status report in a format of the super-real-time service special buffer area status report when the condition that the super-real-time service special buffer area status report needs to be reported is detected; the base station is used for receiving the buffer area state report reported by the user equipment and determining the TTI length of the resource to be allocated according to the buffer area state report.

The ue and the base station are the same as the above-mentioned reporting apparatus for the buffer status report, and therefore are not described herein again.

In addition, the specific processing flow of the above device and system is the same as that of the above method, and therefore, the detailed description thereof is omitted.

In summary, in the conventional LTE system, the ue is enabled to report the super real-time service buffer status by defining a super real-time service dedicated buffer status report (S-BSR). By introducing the S-BSR, on one hand, the differentiation degree of the user service priority can be increased; on the other hand, the reporting delay of the S-BSR is effectively reduced through the corresponding timer of the S-BSR. In addition, through a reasonable buffer status report reporting mechanism, resources are effectively utilized to report the buffer status report including the super real-time service.

The integrated module of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the method of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only for illustrating the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention.

Claims

1. A method for reporting a buffer status report is characterized by comprising the following steps:

the method comprises the steps that User Equipment (UE) receives format configuration information of a Buffer Status Report (BSR) sent by a base station, wherein the format configuration information of the buffer status report comprises the following steps: the format of a special buffer status report (S-BSR) for the super real-time service;

when the user equipment detects that the state report of the special buffer area for the super real-time service needs to be reported, the user equipment reports the state report of the special buffer area for the super real-time service in the format of the state report of the special buffer area for the super real-time service;

wherein, the format of the super real-time service special buffer status report S-BSR comprises: a short or truncated S-BSR, a long S-BSR in a first format, a long S-BSR in a second format; wherein the short or truncated S-BSR refers to: only mapping the BSR of the data size of one LCG buffer area in the LCG of the super real-time service logic channel group; the long S-BSR of the first format refers to: the BSR of the data size of all LCG buffer areas of the super real-time service is mapped; the long S-BSR of the second format refers to: the BSR of the data size of the LCG buffer area of the super real-time service and the data size of the LCG buffer area of the common service can be mapped;

when the ue detects that it needs to report the super-real-time service dedicated buffer status report, reporting, by the ue, the super-real-time service dedicated buffer status report in the format of the super-real-time service dedicated buffer status report includes:

2. The method of claim 1, wherein the format configuration information of the buffer status report comprises: a long S-BSR of the first format and/or a long S-BSR of the second format.

3. The method of claim 1, wherein the reporting, by the UE, of the super real-time service dedicated buffer status report in the format of the super real-time service dedicated buffer status report comprises: and the user equipment identifies the format of the buffer status report through an LCID (logical link identification) domain configured in a subheader of the MAC PDU of the uplink shared channel.

4. The method of claim 1, wherein after the ue receives the format configuration information of the buffer status report BSR sent by the base station, the method further comprises: the user equipment triggers and reports the state report of the special buffer area for the super real-time service when detecting at least one of the following events:

any one of all logic channels of the LCG has data to be sent;

the number of the filling bit numbers is more than or equal to the sum of the bit numbers of the media access control MAC control unit and the corresponding sub-heads of the super real-time service special buffer status report.

5. The method as claimed in claim 4, wherein before the UE reports the super real time service dedicated buffer status report in the format of the super real time service dedicated buffer status report when the UE detects that the report of the super real time service dedicated buffer status report is required, the method further comprises: and the user equipment receives the configured periodic super real-time service special buffer area state report timer and the retransmission super real-time service special buffer area state report timer from the base station.

6. A method for reporting a buffer status report is characterized by comprising the following steps:

the base station sends format configuration information of a buffer status report to user equipment, wherein the format configuration information of the buffer status report comprises: format of buffer status report dedicated to super real-time service;

the base station receives a buffer area state report reported by the user equipment and determines the Transmission Time Interval (TTI) length of resources to be allocated according to the buffer area state report;

wherein, the format of the super real-time service special buffer status report S-BSR comprises: a short or truncated S-BSR, a long S-BSR in a first format, a long S-BSR in a second format; wherein short or truncated S-BSR refers to: only mapping the BSR of the data size of one LCG buffer area in the LCG of the super real-time service logic channel group; the long S-BSR of the first format refers to: the BSR of the data size of all LCG buffer areas of the super real-time service is mapped; the long S-BSR of the second format refers to: the BSR of the data size of the LCG buffer area of the super real-time service and the data size of the LCG buffer area of the common service can be mapped;

the receiving, by the base station, the buffer status report reported by the user equipment includes: the base station receives the super real-time service special buffer area status report reported by the user equipment in the format of the super real-time service special buffer area status report;

wherein reporting, by the ue, the super real-time service dedicated buffer status report in the format of the super real-time service dedicated buffer status report includes:

7. The method of claim 6, wherein the determining the TTI length of resources to be allocated from the buffer status report comprises: when the buffer status report received by the base station comprises a super real-time service special buffer status report and the data volume of the super real-time service LCG buffer indicated by the super real-time service special buffer status report is greater than zero, the base station allocates resources with the length of short TTI (transmission time interval), resources with the length of common TTI (transmission time interval) or resources with various TTI lengths for the super real-time service, wherein the short TTI is the TTI with the length less than 1 millisecond, and the common TTI is the TTI with the length equal to 1 millisecond.

8. A device for reporting a buffer status report is arranged in a user equipment, and the device comprises:

a receiving module, configured to receive format configuration information of a buffer status report BSR sent by a base station, where the format configuration information of the buffer status report includes: the format of a special buffer status report (S-BSR) for the super real-time service;

a sending module, configured to report, when the ue detects that a super-real-time service dedicated buffer status report needs to be reported, the super-real-time service dedicated buffer status report in a format of the super-real-time service dedicated buffer status report;

the format of the super real-time service dedicated buffer status report S-BSR includes: a short or truncated S-BSR, a long S-BSR in a first format, a long S-BSR in a second format; wherein the short or truncated S-BSR refers to: only mapping the BSR of the data size of one LCG buffer area in the LCG of the super real-time service logic channel group; the long S-BSR of the first format refers to: the BSR of the data size of all LCG buffer areas of the super real-time service is mapped; the long S-BSR of the second format refers to: the BSR of the data size of the LCG buffer area of the super real-time service and the data size of the LCG buffer area of the common service can be mapped;

the sending module is specifically configured to:

9. The apparatus of claim 8, wherein the format configuration information of the buffer status report comprises: a long S-BSR of the first format and/or a long S-BSR of the second format.

10. The apparatus of claim 8, wherein the transmitting module is further configured to identify a format of a buffer status report through an LCID field configured in a subheader of a MAC PDU of an uplink shared channel.

11. The apparatus of claim 8, further comprising: the detection module is used for triggering and reporting the state report of the special buffer area for the super real-time service when at least one of the following events is detected to occur:

any one of all logic channels of the LCG has data to be sent;

12. The apparatus of claim 11, wherein the receiving module is further configured to receive a configured periodic super real time service dedicated buffer status reporting timer and a retransmission super real time service dedicated buffer status reporting timer from the base station.

13. A device for reporting a buffer status report is arranged in a base station, and comprises:

a sending module, configured to send format configuration information of a buffer status report to a user equipment, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service;

a processing module, configured to receive a buffer status report reported by the ue, and determine a TTI length of a transmission time interval of resources to be allocated according to the buffer status report;

14. The apparatus of claim 13, wherein the processing module is specifically configured to: and when the received buffer status report comprises a super real-time service special buffer status report and the data volume of the super real-time service LCG buffer area indicated by the super real-time service special buffer status report is more than zero, allocating resources with the length of short TTI (transmission time interval), resources with the length of common TTI or resources with various TTI lengths for the super real-time service, wherein the short TTI is the TTI with the length less than 1 millisecond, and the common TTI is the TTI with the length equal to 1 millisecond.

15. A system for reporting a buffer status report, comprising: the user equipment of any one of claims 8 to 12 and the base station of any one of claims 13 to 14; the base station is configured to send format configuration information of a buffer status report to the ue, where the format configuration information of the buffer status report includes: format of buffer status report dedicated to super real-time service; the user equipment is used for reporting the super real-time service special buffer area status report in a format of the super real-time service special buffer area status report when the condition that the super real-time service special buffer area status report needs to be reported is detected; and the base station is used for receiving the buffer area state report reported by the user equipment and determining the Transmission Time Interval (TTI) length of the resource to be allocated according to the buffer area state report.