CN105491619A - Reporting method and obtaining method of buffer state report - Google Patents

Abstract

The invention provides a reporting method and an acquisition method of a cache status report. Wherein the terminal includes: a first table, representing the data volume range in the terminal's cache; and at least another second table, also representing the data volume range in the terminal's cache, and having a larger maximum data volume than the first table, the The terminal cache status reporting method includes: a table selection step, selecting a table from the first table and at least another second table according to the selection result of the indication notification in the RRC connection establishment signaling received from the base station; the index determination step, according to the terminal The amount of data in the cache of the index is determined from the table selected and notified by the table selection step; and the index transmission step is to transmit the index notified by the index determination step to the base station, wherein the selection result of the base station notified by the indication is based on the type of the terminal .

Description

The reporting method and obtaining method of the cache status report

The application of the present invention is the No. 201080067440.9 of the invention titled "Reporting method, acquisition method, terminal, base station and communication system of cache status report" with the filing date of June 18, 2010 and entering the Chinese national phase on December 14, 2012 A divisional application of the No. Invention Patent Application.

technical field

The present invention relates to the field of communication. More specifically, it relates to a method for reporting a buffer status report (BufferStatusReport, BSR) of a terminal, a method for obtaining a BSR at a base station, and related terminals, base stations and communication systems.

Background technique

In the Long Term Evolution (LTE) project of the Universal Mobile Telecommunications System (UMTS) technology, in order to help the base station to perform more efficient resource scheduling, the terminal needs to report some uplink scheduling information to the base station, such as the buffer status report of the terminal. BSR.

In the LTE system, the BSR is used to indicate the amount of data in the terminal cache allowed by the terminal. According to the regulations of the LTE project, the maximum amount of buffered data supported by the terminal is 150K. In addition, in the LTE system, there are usually three types of BSRs: long BSR, short BSR and truncated BSR. Among them, the long BSR can report the buffer status of the four logical channel groups.

In order to transfer the BSR between the base station and the terminal, a BSR index table is set in both the base station and the terminal. In the BSR index table, according to the method of technical document 1 (3GPPRAN2document, R2-083101, "BufferSizeLevelsforBSRinE-UTRAUplink"), the interval from 0 to 150K is divided into multiple small intervals, and the index number of each small interval corresponds to that in the cache A range of data volume sizes. Wherein, the entire content of Technical Document 1 is hereby incorporated by reference. Therefore, the base station and the terminal can report and obtain the range of the data size in the cache (ie, BSR) by passing the index number.

Specifically, the terminal finds the index number in the BSR index table according to the amount of data in its cache, and reports the index number to the base station, and the base station obtains the data size of the data in the cache from the BSR index table according to the index number. Range (i.e. BSR).

In the LTE project, it is stipulated that the above index number is reported through a 6-bit codeword. Therefore, in this case, the interval from 0 to 150K can be divided into 64 small intervals according to the method of technical document 1. And store the corresponding relationship between the index number of each sub-district and the size range of the corresponding cached data volume to form a BSR index table.

FIG. 10 shows an example of a BSR index table in an existing LTE system. It can be seen that when the maximum amount of cached data in the cache exceeds 150K, the BSR index table can only indicate that the current amount of data exceeds 150K and cannot give a more specific value or range of values.

With the freezing of the LTE project, research on the technology of the fourth generation mobile communication system (Long Term Evolution Advanced, LTE-Advanced, LTE-A) has started. In the LTE-A system, a higher data rate is required, for example, a high data rate requirement of 1 Gbps downlink and 500 MGbps uplink.

With the development of the LTE-A technology and the further increase of the data rate, the maximum amount of cached data supported by the terminal that can be reported will far exceed 150K, for example, it can reach 1200K or 1500K. In this way, the BSR index table in the original LTE technology can no longer support the maximum buffered data volume that the terminal can report, so it is necessary to improve the BSR index table to adapt to the new maximum buffered data volume.

One solution is to expand the size of the BSR index table. For example, a 7-bit codeword is used to represent the index number. In this case, the number of intervals in the BSR index table can reach 128.

Another solution is to expand the maximum amount of cached data in the BSR index table. For example, in the technical solution provided by Technical Document 2 (3GPPRAN2document, R2-102987, "REL-10BSRformatandbuffersizefield"), the maximum cached data volume of the original BSR index table is directly expanded to 1200K or 1500K, and then the method of Technical Document 1 is used to The range from 0 to 1200K or 0 to 1500K is divided into multiple cells. FIG. 11 shows a BSR index table according to the technical solution of Technical Document 2. In the BSR index table shown in FIG. 11 , the maximum cached data volume is 1200K. In addition, in the technical solution of technical document 2, the extended BSR index table is used to replace the original BSR index table.

Contents of the invention

A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical parts of the invention nor to delineate the scope of the invention. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The present invention aims to extend the BSR index table to adapt to the new maximum cached data volume (for example, 1200K or 1500K, but not limited thereto). According to the present invention, in addition to the original BSR index table, at least one extended BSR index table is added. The present invention further provides a BSR reporting method, an acquisition method, and related base stations, terminals and communication systems under the condition of adding an extended BSR index table.

According to one aspect of the present invention, there is provided a terminal, the terminal comprising: a cache state index table; at least one extended cache state index table; an index table selector for selecting the cache state index table and the at least one extended cache An index table in the state index table; an index determiner, which determines an index corresponding to the data amount in the one index table according to the amount of data in the terminal cache; an index sender, which sends the index to the base station.

According to another aspect of the present invention, there is provided a terminal cache status reporting method, wherein the terminal includes a cache status index table and at least one extended cache status index table, and the method includes: an index table selection step, selecting the cache A state index table and an index table in the at least one extended cache state index table; the index determination step is to determine the corresponding index of the data amount in the one index table according to the amount of data in the terminal cache; the index sending step, The index is sent to the base station.

According to another aspect of the present invention, a base station is provided, and the base station includes: a cache state index table; at least one extended cache state index table; an index table selector for selecting the cache state index table and the at least one extended An index table in the buffer state index table; an index receiver, receiving an index from the terminal; a data amount determiner, determining the amount of data in the terminal cache from the one index table according to the index.

According to another aspect of the present invention, there is provided a method for obtaining a cache status report at a base station, wherein the base station includes a cache status index table and at least one extended cache status index table, and the method includes: an index table selection step, selecting One index table in the cache state index table and the at least one extended cache state index table; the index receiving step, receiving the index from the terminal; the data amount determining step, determining the terminal cache from the one index table according to the index amount of data in .

According to another aspect of the present invention, a communication system is provided, including at least one above-mentioned base station and at least one above-mentioned terminal.

According to one aspect of the present invention, a terminal is provided, including: a first table representing the amount of data in the terminal's cache; at least another second table also representing the amount of data in the terminal's cache, and having a value higher than that of the first The maximum amount of data in the table is large; the table selector unit selects the table from the first table and at least another second table according to the selection result of the indication notification in the RRC connection establishment signaling received from the base station; the index determination unit, according to The amount of data in the cache of the terminal acquires an index from the table selected and notified by the table selector unit; and an index transmitter that transmits the index notified by the index determination unit to the base station, wherein the selection result of the base station notified by the indication is based on the terminal's Type of.

According to another aspect of the present invention, a base station is provided, including: a first table representing the amount of data in the buffer of the terminal; at least another second table also representing the amount of data in the buffer of the terminal, and having a value higher than that of the first table A large maximum amount of data for one table; a table selector unit selects a table from the first table and at least another second table according to the type of the terminal, and sends an indication to the terminal in the RRC connection establishment signaling to notify the terminal of the selection result The index receiver receives the index from the terminal; the data amount determination unit determines the amount of data in the cache of the terminal according to the index of the table selected by the table selector unit.

According to another aspect of the present invention, a communication system is provided, including: a terminal and a base station, wherein the terminal includes: a first table representing the amount of data in the terminal's cache; at least another second table also representing the terminal's The amount of data in the cache, and has a maximum amount of data larger than the first table; the table selector unit selects from the first table and at least another second table according to the selection result of the indication notification in the RRC connection establishment signaling received from the base station Select a table from two tables; the index determination unit obtains the index from the table selected and notified by the table selector unit according to the amount of data in the cache of the terminal; and the index transmitter sends the index notified by the index determination unit to the base station, and the base station includes: A table selector unit selects a table from the first table and at least another second table according to the type of the terminal, and sends an indication to the terminal in the RRC connection establishment signaling to notify the terminal of the selection result; an index receiver receives from the terminal an index; and a data amount determiner for determining the amount of data in the cache of the terminal based on the index from the table selected by the table selector unit.

According to one aspect of the present invention, there is provided a method for reporting the cache status of a terminal, wherein the terminal includes: a first table representing the range of data volume in the cache of the terminal; and at least another second table also representing the range of data in the cache of the terminal The data volume interval, and having a maximum data volume larger than the first table, the method includes: a table selection step, according to the selection result of the indication notification in the RRC connection establishment signaling received from the base station, from the first table and at least another Select the table in the second table; the index determination step determines the index from the table selected and notified by the table selection step according to the amount of data in the cache of the terminal; and the index sending step sends the index notified by the index determination step to the base station, wherein, by The selection result of the base station indicating the notification is according to the type of the terminal.

According to another aspect of the present invention, there is provided a method for obtaining a cache status report at a base station, wherein the base station includes: a first table representing the data volume range in the terminal's cache; and at least another second table also representing The data volume interval in the cache of the terminal, and has a maximum data volume larger than that of the first table, the method includes: a table selection step, selecting a table from the first table and at least another second table according to the capability of the terminal, and in In the RRC connection establishment signaling, an instruction is sent to the terminal to notify the terminal of the selection result; the index receiving step receives the index from the terminal; and the data amount determining step determines the amount of data in the cache of the terminal from the table selected by the table selecting step according to the index .

These and other advantages of the present invention will be more apparent through the following detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

Description of drawings

The present invention can be better understood by referring to the following description given in conjunction with the accompanying drawings, wherein the same or similar reference numerals are used throughout to designate the same or similar parts. The accompanying drawings, together with the following detailed description, are incorporated in and form a part of this specification, and serve to further illustrate preferred embodiments of the invention and explain the principles and advantages of the invention. In the attached picture:

FIG. 1 is a block diagram of a terminal according to an embodiment of the present invention;

FIG. 2 is a flowchart of a reporting method of a terminal BSR according to an embodiment of the present invention;

Figure 3 is a block diagram of a base station according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method for obtaining a BSR at a base station according to an embodiment of the present invention;

5 is an example diagram of RRC (RadioResourceControl, radio resource control) signaling used in a method for reporting a terminal BSR and/or a method for a base station to obtain a BSR according to an embodiment of the present invention;

FIG. 6 is an exemplary diagram of MAC (MediaAccessControl, media access control) signaling used in a terminal BSR reporting method and/or a base station method for obtaining a BSR according to an embodiment of the present invention;

FIG. 7 is an exemplary diagram of MAC signaling used in a terminal BSR reporting method and/or a base station method for obtaining a BSR according to an embodiment of the present invention;

FIG. 8 is an exemplary diagram of MAC signaling used in a terminal BSR reporting method and/or a base station method for obtaining a BSR according to an embodiment of the present invention;

FIG. 9 is an exemplary diagram of MAC signaling used in a terminal BSR reporting method and/or a base station method for obtaining a BSR according to an embodiment of the present invention;

Fig. 10 is the example of existing BSR index table;

Fig. 11 shows the BSR index table according to technical document 2, wherein the maximum cached data volume is 1200K;

FIG. 12 shows an extended BSR index table according to an embodiment of the present invention, wherein the cache data volume ranges from 150K to 1200K;

FIG. 13 shows an extended BSR index table according to an embodiment of the present invention, wherein the cache data volume ranges from 150K to 1500K;

FIG. 14 is a block diagram of an exemplary structure of a general-purpose personal computer in which methods and/or apparatuses according to embodiments of the present invention can be implemented.

detailed description

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and the Other details not relevant to the present invention are described.

As mentioned above, the present invention aims to extend the BSR index table to accommodate higher data transmission rates. In the technical solution of the present invention, in addition to the original BSR index table, at least one extended BSR index table is added. Furthermore, the embodiments of the present invention provide a BSR reporting method, an acquisition method and related base stations, terminals and communication systems under the condition that at least one extended BSR index table is added.

Embodiments of the present invention provide a terminal applicable when at least one extended BSR index table is added. Fig. 1 shows a block diagram of a terminal 100 according to an embodiment of the present invention. As shown in FIG. 1 , the terminal 100 includes: a BSR index table 102 ; an extended BSR index table 104 ; an index table selector 106 ; an index determiner 108 ;

Note that in order to keep the drawing concise, the extended BSR index table 104 is shown as one in FIG. 1 . But FIG. 1 is only an example, and the present invention is not limited thereto. Obviously, the number of extended BSR index tables 104 may be two or more.

Referring to FIG. 1 , the BSR index table 102 may be the existing BSR index table shown in FIG. 10 . For example, the cached data range of the BSR index table 102 is, for example, from 0 to 150K, and is divided into 64 small areas according to the method of technical document 1. However, the BSR index table 102 is not limited to this. For example, the cache data range does not have to be from 0 to 150K, but can be any other range. Moreover, the number of inter-cells is not necessarily 64, but may be any other number. Nevertheless, in the following description, the range of 0 to 150K and 64 cells is still taken as an example for illustration.

Referring to FIG. 1 , the extended BSR index table 104 may be an index table used to extend the existing BSR index table to adapt to a higher data transmission rate.

In an embodiment, the range of the buffered data amount of the extended BSR index table 104 may have a sequential relationship with the range of the buffered data amount of the BSR index table 102 . For example, the lower limit of the cached data volume range in the extended BSR index table 104 can be the upper limit of the cached data volume range in the BSR index table 102, such as 150K; and the upper limit of the cached data volume range in the extended BSR index table 104 can be It is the maximum amount of cached data stipulated in the protocol standard or determined according to the actual application situation, such as 1200K or 1500K.

In another embodiment, the cached data volume range of the extended BSR index table 104 may have an inclusion relationship with the cached data volume range of the BSR index table 102 . For example, the extended BSR index table 104 may be the extended BSR index table according to Technical Document 2. In this case, the lower limit of the cached data volume range of the extended BSR index table 104 is the same as the lower limit of the cached data volume range of the BSR index table 102, for example, can be 0; and the upper limit of the cached data volume range of the expanded BSR index table 104 For example, it may be the maximum amount of cached data stipulated in the protocol standard or determined according to actual application conditions, such as 1200K or 1500K.

In addition, for the extended BSR index table 104 and the BSR index table 102, various suitable methods can be used to divide the cached data volume range into multiple small areas. For example, the method of technical document 1 can be used to divide the range of cached data volume into multiple small areas. Figures 12 and 13 respectively show the extended BSR index table obtained by the method of Technical Document 1, wherein the ranges of cached data are from 150K to 1200K and from 150K to 1500K respectively. However, the extended BSR index table 104 is not limited to this. For example, the number of inter-cells is not necessarily 64, but may be any other number. Nevertheless, in the following description, 64 cell intervals are still taken as an example for description.

In addition, with the further development of communication technology, the amount of data that needs to be reported by the terminal may further increase. Therefore, multiple extended BSR index tables may also be used. In the case that there are multiple extended BSR index tables, the cached data volume range of each extended BSR index table may be a sequential relationship or an inclusion relationship.

In an embodiment of the present invention, there may be a sequential relationship among the cached data volume ranges of each extended BSR index table. Specifically, the amount of data that needs to be reported by the terminal can be divided into several consecutive interval segments, and each interval segment is represented by an extended BSR index table.

In another embodiment of the present invention, there may be an inclusion relationship among the ranges of cached data amounts of each extended BSR index table. Specifically, each extended BSR index table has the same lower limit of the cached data range, such as 0K; however, each extended BSR index table has a different upper limit of the cached data range to adapt to various data rates.

Referring back to FIG. 1 , the index table selector 106 is used to select one index table from the cache state index table 102 and at least one extended cache state index table 104 , and notifies the index determiner 108 of the selection result. In addition, the index table selector 106 may actively select and notify the base station of the selection result through indication signaling, or may passively select according to indication signaling from the base station (not shown in FIG. 1 ).

In an embodiment, the index table selector 106 may passively select one index table among the cache state index table 102 and the at least one extended cache state index table 104 according to the instruction signaling from the base station. Specifically, the index table selector 106 receives indication signaling from the base station, determines which index table to select according to the indication signaling, and notifies the index determiner 108 of the selection result.

In another embodiment, the index table selector 106 may actively select one of the cache state index table 102 and at least one extended cache state index table 104, and then directly notify the index determiner of the selection result and pass an indication message Order to notify the base station of the selection result.

When the index table selector 106 actively selects, the index table selector 106 may first select an index table according to the amount of terminal cached data or according to the terminal type and the amount of terminal cached data.

In an embodiment, the index table selector 106 may select an index table according to the amount of terminal cached data. For example, when the index table selector 106 finds that the size of the terminal cache data is in the range of 0 to 150K, the index table selector 106 selects the BSR index table 102; and when the index table selector 106 finds that the size of the terminal cache data exceeds 150K, the index table selector 106 selects the extended BSR index table 104. In addition, in the case that there are multiple extended BSR index tables, the index table selector 106 may select the corresponding extended BSR index table according to the size of the data buffered by the terminal.

In another embodiment, the index table selector 106 may select an index table according to the type of the terminal and the amount of cached data in the terminal. For example, when the index table selector 106 finds that the terminal is an LTE device, the index table selector 106 selects the cache state index table 102 . And when the index table selector 106 finds that the terminal is an LTE-A device, the index table selector 106 can directly select the extended cache state index table 104, or can further select in combination with the amount of terminal cached data, that is: when the terminal cached data amount When the size of is within the range of 0 to 150K, the cache status index table 102 is selected; and when the size of the terminal cached data exceeds 150K, the extended cache status index table 104 is selected. In the case that there are multiple extended BSR index tables, the index table selector 106 may directly select the corresponding extended BSR index table according to the amount of data cached by the terminal.

Next, the index table selector 106 may directly notify the index determiner 108 of the selection result, and notify the base station of the selection result through indication signaling.

It can be seen that no matter whether the index table selector selects actively or passively, the information about which index table the index corresponds to needs to be transferred between the terminal and the base station through indication signaling. The indication signaling may be various appropriate protocol messages, for example, the indication signaling may be radio resource control layer (RadioResourceControl, RRC) signaling or media access control layer (MediaAccessControl) signaling.

In the case that the terminal receives indication signaling from the base station and selects an index table according to the indication signaling, the indication signaling may be, for example, RRC signaling.

In one embodiment, the index table selector 106 may receive RRC signaling as an indication signal from the base station to determine which index table should be selected. For example, as shown in FIG. 5 , the index table selector 106 may receive index table indication information in RRC Connection Setup (RRCConnectionSetup) signaling from the base station to determine which index table should be selected.

On the other hand, when the terminal actively selects the BSR index table and notifies the base station of the selection result through indication signaling, the index table selector 106 in the terminal may use RRC signaling or MAC signaling as the indication signaling to notify the base station The selected index table is information that notifies the base station of which one of the BSR index table and the BSR extended buffer state index table the index received by the base station corresponds to.

In one embodiment, the index table selector 106 may use the RRC signaling as the indication signaling to notify the base station of the selected index table.

In a specific embodiment, for example, as shown in FIG. 5, the index table selector 106 may send the RRC connection request (RRCConnectionRequest) signaling or the RRC connection setup completion (RRCConnectionSetupComplete) signaling including the index table indication information to the base station. The selected index table is notified to the base station.

In another embodiment, the index table selector 106 may use the MAC signaling as the indication signaling to notify the base station of the selected index table.

In a specific embodiment, the index table selector 106 may use a logical channel identifier (LogicChannelIdentity, LCID) in MAC signaling to notify the base station which index table is selected. Specifically, in the case that the BSR value comes from the extended BSR index table 104, a new LCID is defined for the long BSR, the short BSR, and the truncated BSR respectively, and the index table selector 106 can use the value of the newly defined LCID to Indicates the type of BSR and the extended BSR index table used by the terminal. In the case that the BSR value comes from the BSR index table 102, the index table selector 106 can use the LCID value defined in the current protocol to indicate that the terminal uses the BSR index table 102.

For example, as shown in Figure 6, three new LCID values 01011, 01100 and 01101 are defined, where: LCID=01011 indicates that the BSR in the MAC signaling is a long BSR, and the value of the BSR comes from the extended BSR index table ;LCID=01100 indicates that the BSR in the MAC signaling is a short BSR, and the value of the BSR comes from the extended BSR index table; LCID=01101 indicates that the BSR in the MAC signaling is a truncated BSR, and the value of the BSR comes from For extending the BSR index table. In this way, the terminal can indicate the type of BSR and the selected index table is an extended BSR index table according to the three newly defined LCID values. In addition, the logical values shown in FIG. 6 are only examples and not limiting, and obviously other suitable forms of logical values can also be used.

In this specific embodiment, the newly defined LCID value realizes informing the base station of the type of the BSR and the type of the BSR index table in a simple manner. But in this particular embodiment, the four logical channel groups in the long BSR are not distinguished. That is to say, it does not specifically indicate which index table the BSRs of all logical channel groups in the long BSR, such as BS#0 to BS#3, come from.

In order to more accurately select an appropriate index table based on the data volume of each logical channel group, it is necessary to indicate to the base station which index table is used by each logical channel group of the terminal. Therefore, in another specific embodiment, an additional byte may be added to the MAC signaling, and the index table selector 106 uses the LCID in the MAC signaling and at least some bits in the additional byte to notify the base station of the Which index table is selected for each logical channel group.

Specifically, for the short BSR or truncated BSR, similar to the previous specific embodiment, the index table selector 106 indicates that the terminal uses the BSR index table 102 through the LCID value defined in the current protocol, and uses the newly defined LCID value To indicate that the terminal uses the extended BSR index table 104. In another embodiment, there is no need to define a new LCID, but a bit in the additional byte indicates whether the BSR index table or the extended BSR index table is used. This situation is similar to the following long BSR description of the situation.

For a long BSR, in the case where the BSRs of the four logical channel groups in the long BSR can all be represented by the BSR index table 102 (for example, the buffered data volume reported in each logical channel group is less than 150K), the index Table selector 106 can indicate this by using an existing LCID value in the protocol. And in the case where one or more BSRs in the four logical channel groups in the long BSR are applicable to the extended BSR index table 102 (for example, in the case where the buffered data volume reported in at least one logical channel group exceeds 150K), the index table The selector 106 can use the new LCID value to indicate that the type of the BSR is a long BSR and not all use the BSR index table, and use four bits in the additional byte to further indicate that the BSRs of the four logical channel groups in the long BSR are respectively Which index table to take from. Specifically, the index table selector 106 can use an existing LCID value or a newly defined LCID value to indicate that the type of the BSR is a long BSR, and further use the LCID value and four bits in the additional byte to indicate that the type of the BSR in the long BSR is Which BSR index tables are the BSRs of the four logical channel groups obtained from? However, it is also possible to use only the existing LCID without defining a new LCID. At this time, the LCID is only used to indicate the type of the BSR, and the bits in the additional byte fully indicate which index table each logical channel group corresponds to.

For example, as shown in Figure 7: the index table selector 106 uses the last four bits (BTI0, BTI1, BTI2, BTI3) in the additional byte to indicate which index table the BSRs of the four logical channel groups in the long BSR are respectively taken from . For example, when the value of LCID corresponds to the long BSR and (BTI0, BTI1, BTI2, BTI3)=1010, it may indicate that the BSR values of the logical channel groups BS#0 and BS#2 in the long BSR come from the extended BSR Index table 104; and the BSR values of the logical channel groups BS#1 and BS#3 come from the BSR index table 102. In addition, the arrangement of logic bits shown in FIG. 7 is only an example and does not constitute a limitation, and obviously other suitable forms of arrangement of logic bits may also be used. For example, it is not necessary to use the last four bits in the additional byte but other four bits may be used, 1 may be used to represent the BSR index table 102 and 0 may be used to represent the extended BSR index table, etc.

In addition, in another specific embodiment, the index table selector 106 may use the LCID in the MAC signaling and the reserved bits in the subheader to notify the base station which index table is selected by the terminal. Specifically, the two bits in the LCID value and the two reserved bits in the subheader may be used to notify the base station which index table is selected by the terminal for each logical channel group.

Considering that in the current LTE system, the LCID values in the range of 01011-11001 are reserved LCIDs, therefore, as shown in FIG. The last two bits of the value and the first two reserved bits RR in the subheader indicate which index table the terminal selects for each logical channel group.

For example, when RR=00 and LCID=10011, it can indicate that the BSR is a long BSR, and the BSR values of the logical channel groups BS#0 and BS#1 in the long BSR come from the BSR index table 102 and the logical channel group The BSR values of BS#2 and BS#3 come from the extended BSR index table 104 . In addition, the logical bit setting and the selected LCID reserved value shown in FIG. 8 are only examples and do not constitute a limitation. Obviously, other suitable logical bit settings and LCID reserved values can also be used, and 1 can also be used to represent the BSR index Table 102 uses 0 to represent the extended BSR index table.

In the above specific embodiments, no distinction is made between the cases where the number of extended BSR index tables is two or more. Therefore, in another specific embodiment, an additional byte can be added in the MAC signaling, and the index table selector 106 uses the LCID in the MAC signaling and the additional byte to indicate that the terminal has selected the BSR index table and multiple Which of the extended BSR index tables.

For example, for a short BSR or a truncated BSR, the index table selector 106 can indicate that the terminal uses the BSR index table 102 through the LCID value defined in the current protocol; it indicates that the terminal uses the extended BSR index table through a newly defined LCID value , and indicate which extended BSR index table is specifically used through the table number bit in the additional byte Oct1 in FIG. 9( b ). In another implementation manner, it is also unnecessary to define a new LCID, and the table number bit in the additional byte may be used to indicate which index table is used. This situation is similar to the description of the long BSR below.

For the long BSR, in the case where the BSRs of the four logical channel groups in the long BSR can all be represented by the BSR index table 102 (for example, the buffered data volume reported in each logical channel group is less than 150K), the index Table selector 106 can indicate this by using an existing LCID value in the protocol. And in the case where one or more BSRs in the four logical channel groups in the long BSR are applicable to the extended BSR index table 102 (for example, in the case where the buffered data volume reported in at least one logical channel group exceeds 150K), the index The table selector 106 can use the new LCID value to indicate that the terminal uses a long BSR and does not all use the BSR index table, and further indicates that in the long BSR by using the table number bit in the additional byte in Figure 9 (a). From which index table the BSRs of the four logical channel groups are obtained respectively. Specifically, the index table selector 106 can use an existing LCID value or a newly defined LCID value to indicate that the type of the BSR is a long BSR, and further indicate the long BSR through the LCID value and the table number bit in the additional byte From which BSR index table are the BSRs of the four logical channel groups in ? However, it is also possible to use only the existing LCID without defining a new LCID. At this time, the LCID is only used to indicate the type of the BSR, and the bits in the additional byte fully indicate which index table each logical channel group corresponds to.

In the additional byte, the 2-bit table number can be used to indicate which BSR index table the corresponding BSR value comes from. The logical bit arrangement and the number of digits representing the table number shown in FIG. 9 are only examples and not limiting. Obviously, other suitable forms of logical bit arrangement and other numbers of digits can be used to represent the table number.

In addition, the specific embodiment described above in conjunction with FIG. 7 may also be regarded as another implementation manner of the specific embodiment described in conjunction with FIG. 9 . Specifically, in the specific embodiment described in FIG. 7 , it involves an extended BSR index table and indicates which index table in the BSR index table and the extended BSR index table is used by a table number of 1 bit; and in In the specific embodiment described in FIG. 9 , multiple extended index tables are involved, and a 2-bit table number is used to indicate which index table among the BSR index table and the extended BSR index table is used.

Returning to FIG. 1 , the index determiner 108 obtains the corresponding index from the index table selected by the index table selector 106 according to the amount of data buffered by the terminal, and sends the index to the index transmitter 110 , and sends it to the base station through the index transmitter 110 .

In this way, a terminal applicable to the case where at least one extended BSR index table is added is realized.

Correspondingly, the embodiments of the present invention also provide a base station applicable when at least one extended BSR index table is added. Fig. 3 shows a block diagram of a base station 300 according to an embodiment of the present invention. As shown in FIG. 3, the base station includes: a BSR index table 302; an extended BSR index table 304; an index receiver 306; an index table selector 308;

Note that in order to keep the drawing concise, the extended BSR index table 304 is shown as one in FIG. 3 . But FIG. 3 is only an example, and the present invention is not limited thereto. Obviously, the number of extended BSR index tables 104 may be two or more.

The BSR index table 302 and the extended BSR index table 304 in FIG. 3 may correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. The description is repeated to keep the description concise.

Referring to FIG. 3 , the index table selector 308 is configured to select one of the cache state index table 302 and at least one extended cache state index table 304 , and notify the data amount determiner 310 of the selection result. The index table selector 308 may actively select and notify the terminal of the selection result through indication signaling, or may passively select according to indication signaling from the terminal (not shown in FIG. 3 ).

In an embodiment, the index table selector 308 may passively select one index table from the cache state index table 102 and the at least one extended cache state index table 104 according to the indication signaling from the terminal. Specifically, the index table selector 308 receives the indication signaling from the terminal, determines which index table to select according to the indication signaling, and notifies the index determiner 310 of the selection result

In another embodiment, the index table selector 308 may actively select one of the cache state index table 302 and at least one extended cache state index table 304, and then directly notify the data volume determiner of the selection result and pass an instruction The signaling notifies the terminal of the selection result.

In one embodiment, the index table selector 308 may select an index table according to a terminal type. Specifically, when the index table selector 308 finds that the terminal is an LTE device, the index table selector 308 selects the cache state index table 302 for the terminal. And when the index table selector 308 finds that the terminal is an LTE-A device, the index table selector 308 may select the extended cache state index table 304 for the terminal.

In the case that the index table selector 308 actively performs the selection, the index table selector 308 may directly notify the index receiver 306 of the selection result, and notify the terminal of the selection result through indication signaling.

It can be seen that no matter whether the index table selector selects actively or passively, the information about which index table the index corresponds to needs to be transferred between the terminal and the base station through indication signaling. The indication signaling may be various appropriate protocol messages, for example, the indication signaling may be radio resource control layer (RadioResourceControl, RRC) signaling or media access control layer (MediaAccessControl) signaling.

In the case that the base station actively selects the BSR index table and notifies the terminal of the selection result through indication signaling, the indication signaling may be, for example, RRC signaling.

In one embodiment, the index table selector 308 may send RRC signaling as indication signaling to the terminal to inform the terminal which index table should be selected. For example, as shown in FIG. 5 , the index table selector 308 in the base station may notify the terminal which index table should be selected in the RRC Connection Setup (RRCConnectionSetup) signaling sent to the terminal.

On the other hand, when the base station receives the indication signaling from the terminal, the index table selector 308 in the base station can receive RRC signaling or MAC signaling as the indication signaling from the terminal (that is, obtain information about the index receiver in the base station 306 Information about which one of the BSR index table and the BSR extended cache state index table the received index corresponds to), and select the index table according to the BSR index table indication information in the indication signaling.

In one embodiment, the index table selector 308 may obtain RRC signaling from the terminal as the indication signaling, and select the index table according to the indication signaling.

In a specific embodiment, for example, as shown in FIG. 5 , the index table selector 308 may select an index table according to RRC Connection Request (RRCConnectionRequest) signaling or RRC Connection Setup Complete (RRCConnectionSetupComplete) signaling from the terminal.

In another embodiment, the index table selector 308 may obtain MAC signaling from the terminal as the indication signal, so as to know which index table is selected by the terminal.

In a specific embodiment, the index table selector 308 may determine which index table is selected by the terminal according to the LCID in the MAC signaling obtained from the terminal.

In another specific embodiment, the index table selector 308 may determine which index table is selected by the terminal according to the LCID in the MAC signaling and at least some bits in an additional byte.

In another specific embodiment, the index table selector 308 may determine which index table is selected by the terminal according to the LCID in the MAC signaling and the reserved bits in the subheader.

Regarding the specific details of the MAC signaling and the RRC signaling, reference may be made to the content described above in conjunction with FIG. 5 to FIG. 9 , and the description is not repeated here to keep the description concise.

Returning to FIG. 3 , the index receiver 306 receives the selection result provided by the index table selector 308 and the index number reported by the terminal (not shown in FIG. 3 ), and provides the received selection result and the index number to the data amount determiner 310 .

In addition, although it is shown in FIG. 3 that the index table selector 308 sends the selection result of the index table to the index selector 306, the index selector 306 sends the index received from the terminal and the index received from the index table selector 308 The table selection result is provided to the data amount determiner 310, but FIG. 3 is just an example, and the present invention is not limited thereto.

For example, in another embodiment of the present invention, the index receiver can also only receive the index and provide the received index to the data volume determiner, and the index table selector can directly send the selection result of the index table to the data volume Determiner.

In this case, the processing of the index table selector and the processing of the index receiver may or may not be performed simultaneously, that is, the processing of the index table selector may be performed before or after the processing of the index receiver.

Returning to FIG. 3 , the data amount determiner 310 obtains the corresponding data amount range from the index table selected by the index table selector 308 according to the index received by the index receiver 306 , thus, the base station obtains the terminal buffer status report.

In this way, a base station applicable under the condition that at least one extended BSR index table is added is realized.

The embodiment of the present invention provides a method for reporting a terminal BSR applicable when at least one extended BSR index table is added.

Fig. 2 is a flowchart of a reporting method of a terminal BSR according to an embodiment of the present invention.

As shown in FIG. 2 , an index table selection step is performed at S202 to select an index table from the BSR index table and at least one extended BSR index table.

Wherein, the BSR index table and the extended BSR index table may correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. The instructions are kept concise.

In addition, the index table selection step may be actively performed by the terminal, or may be performed passively according to an indication signal from the base station.

In an embodiment of the present invention, the step of selecting the index table may be performed actively by the terminal. Specifically, the terminal may select an index table according to the amount of data in the terminal cache or according to the amount of data in the terminal cache and the type of the terminal, and notify the base station of the selection result through indication signaling.

In a specific embodiment, the indication signaling may be RRC signaling such as RRC Connection Request (RRCConnectionRequest) signaling or RRC Connection Setup Complete (RRCConnectionSetupComplete) signaling.

Specifically, in the index table selection step, the terminal may notify the base station of the selected index table through RRC Connection Request (RRCConnectionRequest) signaling or RRC Connection Setup Complete (RRCConnectionSetupComplete) signaling.

In another specific embodiment, the indication signaling may be MAC signaling.

For example, in the index table selection step, the terminal may notify the base station of the selected index table through the LCID in the MAC signaling.

Alternatively, in the step of selecting the index table, the terminal may notify the base station of the selected index table through the LCID in the MAC signaling and at least some bits in an additional byte.

Alternatively, in the step of selecting the index table, the terminal may notify the base station of the selected index table by using the two bits in the LCID in the MAC signaling and the reserved bits in the subheader.

On the other hand, in another embodiment of the present invention, the index table selection step may be performed according to an instruction signaling from the base station. For example, the base station may select an index table according to the type of the terminal, and notify the terminal of the selection result through indication signaling, and the terminal selects the index table according to the indication signaling from the base station.

In a specific embodiment, the indication signaling may be RRC signaling such as RRC connection setup (RRCConnectionSetup) signaling.

Specifically, in the step of selecting an index table, the base station may notify the terminal of the selected index table through RRC Connection Setup (RRCConnectionSetup) signaling.

For the specific use of RRC signaling and MAC signaling, reference may be made to the above related descriptions in conjunction with FIG. 5 to FIG. 9 , which will not be repeated here to keep the description concise.

Returning to FIG. 2, next, in step 204, an index is determined from the index table selected in step S202 according to the amount of data in the terminal cache.

Next, in step 206, the index is reported to the base station.

This enables reporting of terminal BSRs in the presence of at least one extended BSR index table.

Correspondingly, the embodiments of the present invention also provide a method for acquiring a terminal BSR applicable when at least one extended BSR index table is added.

Fig. 4 is a flowchart of a method for obtaining a BSR at a base station according to an embodiment of the present invention.

As shown in FIG. 4, at step S402, an index table selection step is performed to select an index table from the BSR index table and at least one extended BSR index table.

Note that the BSR index table and the extended BSR index table may correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. The instructions are kept concise.

In addition, the index table selection step may be actively performed by the base station, or may be performed passively according to an indication signal from the terminal.

In an embodiment of the present invention, the base station may actively perform the step of selecting the index table. For example, the base station may select an index table according to the type of the terminal, and notify the terminal of the selection result through indication signaling.

In a specific embodiment, the indication signaling may be RRC signaling such as RRC connection setup (RRCConnectionSetup) signaling.

On the other hand, in another embodiment of the present invention, the base station may perform the index table selection step according to the indication signaling from the terminal. Specifically, the base station may select the index table according to the indication signaling from the terminal.

In a specific embodiment, the indication signaling may be RRC signaling, such as RRC connection request signaling and RRC connection establishment completion signaling.

In another specific embodiment, the indication signaling may be MAC signaling.

For example, in the step of selecting an index table, the base station may select an index table corresponding to the index according to the LCID in the MAC signaling from the terminal.

Alternatively, in the step of selecting the index table, the base station may select the index table corresponding to the index according to the LCID in the MAC signaling from the terminal and at least some bits in an additional byte.

Or, in the step of selecting the index table, the base station may select the index table corresponding to the index according to the two bits in the LCID in the MAC signaling from the terminal and the reserved bits in the subheader.

For the specific details of RRC signaling and MAC signaling, reference may be made to the above related descriptions in conjunction with FIG. 5 to FIG. 9 , which will not be repeated here to keep the description concise.

Returning to Fig. 4, next, in step S404, an index receiving step is performed to receive an index from the terminal.

Note that although the index receiving step is shown in FIG. 4 as being performed after the index table selecting step, FIG. 4 is just an example and the present invention is not limited thereto. For example, the step of selecting an index table may also be performed simultaneously with the step of receiving the index, or the step of selecting the index table may also be performed after the step of receiving the index.

Returning to FIG. 4 , next, at step 406 , determine the amount of terminal cached data from the selected index table according to the received index.

In this way, it is realized that the BSR report is received at the base station under the condition that at least one extended BSR index table exists.

In addition to the above base station, terminal and method, the present invention also provides a communication system applicable when at least one extended BSR index table is added. The system includes at least one terminal and at least one base station, where the terminal is the terminal according to any of the above embodiments, and the base station is the base station according to any of the above embodiments.

In addition, it should be understood that the various examples and embodiments described herein are exemplary and the present invention is not limited thereto. The reference numerals are used only to describe the invention more clearly. Therefore, it should not be regarded as having any limiting meaning.

Each component module and unit in the above device can be configured by means of software, firmware, hardware or a combination thereof. Specific means or manners that can be used for configuration are well known to those skilled in the art, and will not be repeated here. In the case of realizing by software or firmware, the program constituting the software is installed from a storage medium or network to a computer having a dedicated hardware configuration (for example, a general-purpose computer 1400 shown in FIG. 14 ). Capable of performing various functions, etc.

In FIG. 14 , a central processing unit (CPU) 1401 executes various processes according to programs stored in a read only memory (ROM) 1402 or loaded from a storage section 1408 to a random access memory (RAM) 1403 . In the RAM 1403, data required when the CPU 1401 executes various processes and the like is also stored as necessary. The CPU 1401 , ROM 1402 , and RAM 1403 are connected to each other via a bus 1404 . The input/output interface 1405 is also connected to the bus 1404 .

The following components are connected to the input/output interface 1405: an input section 1406 (including a keyboard, a mouse, etc.), an output section 1407 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.), Storage section 1408 (including hard disk, etc.), communication section 1409 (including network interface card such as LAN card, modem, etc.). The communication section 1409 performs communication processing via a network such as the Internet. A driver 1410 may also be connected to the input/output interface 1405 as needed. A removable medium 1411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 1410 as necessary, so that a computer program read therefrom is installed into the storage section 1408 as necessary.

In the case of realizing the above-described series of processes by software, the programs constituting the software are installed from a network such as the Internet or a storage medium such as the removable medium 1411 .

Those skilled in the art should understand that such a storage medium is not limited to the removable medium 1411 shown in FIG. 14 in which the program is stored and distributed separately from the device to provide the program to the user. Examples of the removable media 1411 include magnetic disks (including floppy disks (registered trademark)), optical disks (including compact disk read only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including )) and semiconductor memory. Alternatively, the storage medium may be a ROM 1402, a hard disk contained in the storage section 1408, or the like, in which the programs are stored and distributed to users together with devices containing them.

The invention also proposes a program product storing machine-readable instruction codes. When the instruction code is read and executed by a machine, the above-mentioned method according to the embodiment of the present invention can be executed.

Correspondingly, a storage medium for carrying the program product storing the above-mentioned machine-readable instruction codes is also included in the disclosure of the present invention. The storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.

Finally, it should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus are also included. Furthermore, without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional same elements in the process, method, article or apparatus comprising said element.

Although the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, it should be understood that the above-described embodiments are only used to illustrate the present invention, rather than to limit the present invention. Various modifications and changes can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, the scope of the present invention is limited only by the appended claims and their equivalents.

It can be seen from the above description that the embodiments of the present invention provide the following technical solutions.

Technical solution 1. A terminal, the terminal comprising:

Cache status index table;

at least one extended cache state index table;

an index table selector for selecting one of the cache state index table and the at least one extended cache state index table;

An index determiner, determining an index corresponding to the data amount in the one index table according to the amount of data in the terminal cache;

An index sender, for sending the index to the base station.

Technical solution 2. The terminal according to technical solution 1, wherein:

The index table selector is configured to select the one index table according to the amount of data in the terminal cache;

The index table selector is further configured to send indication signaling to the base station, where the indication signaling indicates which one of the cache state index table and the at least one extended cache state index table the index corresponds to.

Technical solution 3. The terminal according to technical solution 2, wherein the index table selector is configured to send radio resource control layer signaling.

Technical solution 4. The terminal according to technical solution 3, wherein the index table selector is configured to send RRC connection request signaling or RRC connection establishment completion signaling.

Technical solution 5. The terminal according to technical solution 2, wherein the index table selector is configured to send medium access control layer signaling.

Technical solution 6. The terminal according to technical solution 5, wherein the index table selector is configured to use a logical channel identifier in the medium access control layer signaling to indicate that the index corresponds to the buffer Which one of the state index table and the at least one extended cache state index table.

Technical solution 7. The terminal according to technical solution 5, wherein the index table selector is configured to use the logical channel identifier in the medium access control layer signaling and at least part of the bits in an additional byte bit to indicate which one of the cache state index table and the at least one extended cache state index table the index corresponds to.

Technical solution 8. The terminal according to technical solution 5, wherein the index table selector is configured to use the logical channel identifier in the medium access control layer signaling and the reserved bits in the subheader to select Indicates which one of the cache state index table and the at least one extended cache state index table the index corresponds to.

Technical solution 9. The terminal according to technical solution 1, wherein the index table selector is configured to determine to use the cache state index table and the at least one extended cache state index table based on the indication signaling received from the base station one of the.

Technical solution 10. The terminal according to technical solution 9, wherein the index table selector is configured to receive radio resource control layer signaling.

Technical solution 11. The terminal according to technical solution 10, wherein the index table selector is configured to receive RRC connection establishment signaling.

Technical solution 12. The terminal according to any one of technical solutions 1-11, wherein, the buffer state index table and at least one extended cache state index table correspond to a cache data volume interval having an inclusion relationship.

Technical solution 13. The terminal according to any one of technical solutions 1-11, wherein the buffer state index table and at least one extended buffer state index table correspond to cache data volume intervals having a sequential relationship.

Technical solution 14. A method for reporting a terminal cache status, wherein the terminal includes a cache status index table and at least one extended cache status index table, and the method includes:

An index table selection step, selecting one of the cache state index table and the at least one extended cache state index table;

The index determining step is to determine the index corresponding to the data amount in the one index table according to the amount of data in the terminal cache;

The index sending step is sending the index to the base station.

Technical solution 15. The method according to technical solution 14, wherein the index table selection step is configured to select the one index table according to the amount of data in the terminal cache, and the method further includes:

Sending indication signaling to the base station, where the indication signaling indicates which one of the buffer state index table and the at least one extended buffer state index table the index corresponds to.

Technical solution 16. The method according to technical solution 15, wherein the indication signaling is radio resource control layer signaling.

Technical solution 17. The method according to technical solution 16, wherein the radio resource control layer signaling is RRC connection request signaling or RRC connection establishment completion signaling.

Technical solution 18. The method according to technical solution 15, wherein the indication signaling is medium access control layer signaling.

Technical solution 19. The method according to technical solution 18, wherein the logical channel identifier in the medium access control layer signaling is used to indicate that the index corresponds to the cache state index table and the at least one extended Which of the cache state index tables.

Technical solution 20. The method according to technical solution 18, wherein the logical channel identifier in the medium access control layer signaling and at least some bits in an additional byte are used to indicate that the index corresponds to the which one of the cache status index table and the at least one extended cache status index table.

Technical solution 21. The method according to technical solution 18, wherein the last two bits in the logical channel identifier in the medium access control layer signaling and the reserved bits in the subheader are used to represent the The index corresponds to which one of the cache state index table and the at least one extended cache state index table.

Technical solution 22. The method according to technical solution 14, wherein the index table selection step is configured to: select the one index table according to an indication signal received from a base station.

Technical solution 23. The method according to technical solution 22, wherein the indication signaling is radio resource control layer signaling.

Technical solution 24. The method according to technical solution 23, wherein the radio resource control layer signaling is RRC connection establishment signaling.

Technical solution 25. A base station, the base station comprising:

Cache status index table;

at least one extended cache state index table;

an index table selector for selecting one of the cache state index table and the at least one extended cache state index table;

an index receiver, receiving an index from the terminal;

A data amount determiner, configured to determine the amount of data in the terminal cache from the one index table according to the index.

Technical solution 26. The base station according to technical solution 25, wherein the index table selector is configured to select the one index table according to indication signaling received from the terminal, the indication signaling indicating that the index corresponds to Which one of the cache status index table and the at least one extended cache status index table.

Technical solution 27. The base station according to technical solution 26, wherein the index table selector is configured to receive radio resource control layer signaling.

Technical solution 28. The base station according to technical solution 27, wherein the index table selector is configured to receive RRC connection request signaling or RRC connection establishment completion signaling.

Technical solution 29. The base station according to technical solution 27, wherein the index table selector is configured to receive medium access control layer signaling.

Technical solution 30. The base station according to technical solution 29, wherein the index table selector is configured to determine that the index corresponds to the cache state index according to the logical channel identifier in the medium access control layer signaling table and the at least one extended cache state index table.

Technical solution 31. The base station according to technical solution 29, wherein the index table selector is configured to select according to the logical channel identifier in the medium access control layer signaling and at least some bits in an additional byte Determining: which one of the cache state index table and the at least one extended cache state index table corresponds to the index.

Technical solution 32. The base station according to technical solution 29, wherein, the index table selector is configured to, according to the bits in the logical channel identifier in the medium access control layer signaling and the reserved bits in the subheader bit to determine: which one of the cache state index table and the at least one extended cache state index table corresponds to the index.

Technical solution 33. The base station according to technical solution 25, wherein the index table selector is further configured to send an indication signaling to the terminal, the indication signaling indicates that the buffer state index table and the at least one extended Which of the cache state index tables.

Technical solution 34. The base station according to technical solution 33, wherein the index table selector is configured to send radio resource control layer signaling.

Technical solution 35. The base station according to technical solution 34, wherein the index table selector is configured to send RRC connection establishment signaling.

Technical solution 36. The base station according to any one of technical solutions 25-35, wherein, the buffer state index table and at least one extended buffer state index table correspond to a cache data volume interval having an inclusion relationship.

Technical solution 37. The base station according to technical solutions 25-35, wherein the cached data volume intervals corresponding to the cached state index table and the at least one extended cached state indexed table have a sequential relationship.

Technical solution 38. A method for obtaining a cache status report in a base station, wherein the base station includes a cache status index table and at least one extended cache status index table, the method comprising:

An index table selection step, selecting one of the cache state index table and the at least one extended cache state index table;

The index receiving step is to receive the index from the terminal;

The step of determining the amount of data is to determine the amount of data in the terminal cache from the one index table according to the index.

Technical solution 39. The method according to technical solution 38, wherein the index table selection step is configured to select the one index table according to the indication signaling received from the terminal, the indication signaling indicating that the index corresponds to It depends on which one of the cache status index table and the at least one extended cache status index table.

Technical solution 40. The method according to technical solution 39, wherein the indication signaling is radio resource control layer signaling.

Technical solution 41. The method according to technical solution 40, wherein the radio resource control layer signaling is RRC connection request signaling or RRC connection establishment completion signaling.

Technical solution 42. The method according to technical solution 39, wherein the indication signaling is medium access control layer signaling.

Technical solution 43. The method according to technical solution 42, wherein it is determined according to the logical channel identifier in the medium access control layer signaling that the index corresponds to the cache state index table and the at least one extended Which of the cache state index tables.

Technical solution 44. The method according to technical solution 42, wherein it is determined according to the logical channel identifier in the medium access control layer signaling and at least some bits in an additional byte: the index corresponds to Which one of the cache status index table and the at least one extended cache status index table.

Technical solution 45. The method according to technical solution 42, wherein it is determined according to bits in the logical channel identifier in the medium access control layer signaling and reserved bits in the subheader: the index It corresponds to which one of the cache state index table and the at least one extended cache state index table.

Technical solution 46. The method according to technical solution 38, further comprising: before the index receiving step:

sending an indication signaling to the terminal, where the indication signaling indicates which one of the cache state index table and the at least one extended cache state index table is used.

Technical solution 47. The method according to technical solution 46, wherein the indication signaling is radio resource control layer signaling.

Technical solution 48. The method according to technical solution 47, wherein the radio resource control layer signaling is RRC connection establishment signaling.

Technical solution 49. A communication system, comprising the base station according to any one of technical solutions 25-37 and the terminal according to any one of technical solutions 1-13.

Claims (2)

1. A terminal cache status report method, wherein the terminal comprises: a first table, the first table represents the data amount interval in the cache of the terminal; and at least another second table, the at least another second table also represents the data amount interval in the cache of the terminal, and has a maximum data amount larger than the first table, The methods include: A table selection step of selecting a table from said first table and said at least another second table according to a selection result notified by an indication in an RRC connection establishment signaling received from a base station; an index determination step of determining an index from the table selected and notified by the table selection step according to the amount of data in the cache of the terminal; and An index sending step, sending the index notified by the index determining step to the base station, wherein, The selection result of the base station notified by the indication is according to the type of the terminal. 2. A method for obtaining a cache status report at a base station, wherein, The base station includes: a first table, the first table represents the data amount interval in the cache of the terminal; and at least another second table, the at least another second table also represents the data amount interval in the cache of the terminal, and has a maximum data amount larger than the first table, The methods include: A table selection step, selecting a table from the first table and the at least another second table according to the capabilities of the terminal, and sending an indication to the terminal in the RRC connection establishment signaling to inform the terminal of the selection result; an index receiving step of receiving an index from the terminal; and The step of determining the amount of data is to determine the amount of data in the cache of the terminal from the table selected by the table selection step according to the index.