JP2014197907A - Report method and acquisition method for buffer state report, terminal, base station, and communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a report method for a terminal buffer state report, a method for acquiring the buffer state report at a base station, and a related terminal, base station, and communication system.SOLUTION: Provided is a terminal, the terminal including: a first table indicating a data amount section in a buffer of the terminal; at least one second table indicating the data amount section in the buffer of the terminal, but having a maximum data amount larger than a maximum data amount of the first table; a table selection unit for selecting one table from among the first table and the at least one second table; an index determination unit for determining, on the basis of the data amount in the buffer of the terminal, an index from the one table selected by the table selection unit; and an index transmission unit for transmitting the index to a base station.

Description

  The present invention relates to the field of communications, and more specifically, relates to a terminal buffer status report (BSR) reporting method, a base station BSR acquisition method, and related terminals, base stations, and communication systems.

  In the Long Term Evolution (LTE) project, which is a technology related to the Universal Mobile Telecommunications System (UMTS), a terminal has several terminals to help a base station perform resource scheduling with higher efficiency. It is necessary to report uplink scheduling information, for example, terminal buffer status report, that is, so-called BSR, to the base station.

  In the LTE system, BSR is used to indicate the amount of data (size) in the terminal buffer allowed by the terminal. According to the LTE project regulations, the maximum amount of buffer data that a terminal can support is 150K. In the LTE system, the BSR usually has three types, a long BSR, a shot BSR, and a shortened BSR. Among them, the long BSR may report the buffer status of four logic channel groups.

  In order to transmit BSR between the base station and the terminal, both the base station and the terminal are provided with a BSR index table (also referred to as a “buffer status report table”). In the BSR index table, according to the method of Non-Patent Document 1 (3GPP RAN2 Document, R2-083101, “Buffer Size Levels for BSR in E-UTRA Uplink”), the section from 0 to 150K is divided into a plurality of small sections, Each sub-section index corresponds to one range of data amount (size) in the buffer. Here, the entire contents of Non-Patent Document 1 are incorporated herein by reference. Therefore, the terminal and the base station can report and acquire the range (namely, BSR) of the data amount (size) in the buffer by the method of transmitting the above-described index.

  Specifically, the terminal finds an index from the BSR index table based on the amount of data (size) in its buffer, and reports this index to the base station. Based on the BSR index table, the range (namely, BSR) of the data amount (size) in the buffer is acquired.

  The LTE project stipulates that the above index is reported by a 6-digit codeword. Therefore, in this case, according to the method of Non-Patent Document 1, the section from 0 to 150K is divided into 64 subsections, and the index of each subsection and the range of the buffer data amount (size) corresponding thereto And a BSR index table can be formed.

  FIG. 10 shows an example of a BSR index table in the conventional LTE system. As can be seen from FIG. 10, when the maximum buffer data amount in the buffer exceeds 150K, this BSR index table can only show that the current data amount has exceeded 150K, more specific A numerical value or numerical range cannot be specified.

  With the end of the LTE project, technology research and development for the 4th generation mobile communication system (LTE-Advanced; LTE-A) is now underway. In the LTE-A system, a request for a higher data rate is made. For example, a request for a higher data rate of 1 Gbps for the downlink and 500 MGbps for the uplink is made.

  With the development of LTE-A technology and further increase in data rate, the maximum amount of buffer data that can be reported that the terminal supports can exceed well over 150K, for example, reach 1200K or 1500K. In this way, the BSR index table in conventional LTE technology can no longer support the maximum amount of buffer data that a terminal can report. Therefore, it is necessary to improve the BSR index table in order to adapt to the new maximum buffer data amount.

  One kind of solution is to extend the size of the BSR index table. For example, an index is represented by adopting a 7-digit code word. In this case, the number of sections in the BSR index table can reach 128.

  Another type of solution is to extend the maximum buffer data amount in the BSR index table. For example, in the technical proposal provided in Non-Patent Document 2 (3GPP RAN2 Document, R2-102987, “REL-10 BSR format and buffer size field”), the maximum buffer data amount in the conventional BSR index table is up to 1200K or 1500K. Direct expansion is performed, and then a plurality of small sections are divided into a range from 0 to 1200K or from 0 to 1500K by the method of Non-Patent Document 1. FIG. 11 shows a BSR index table according to the technical proposal of Non-Patent Document 2. In the BSR index table shown in FIG. 11, the maximum buffer data amount is 1200K. In the technical proposal of Non-Patent Document 2, this extended BSR index table is used instead of the conventional BSR index table.

  The following presents a simplified summary of the invention, which provides a basic understanding of some aspects of the invention. It should be understood that this overview is not an exhaustive description of the invention, and is not intended to ascertain key points or important parts of the invention, nor is it intended to limit the scope of the invention. Absent. Also, the purpose of this overview is merely to present some concepts in a simplified form, and this overview is a prelude to further description below.

  An object of the present invention is to extend the BSR index table in order to accommodate a new maximum buffer data amount (for example, but not limited to 1200K or 1500K). According to the present invention, at least one extended BSR index table is further added to the conventional BSR index table. A further object of the present invention is to provide a BSR reporting method, acquisition method, and correlated base station, terminal, and communication system when an extended BSR index table is added.

  According to one aspect of the present invention, a terminal is provided. The terminal includes: a buffer status index table; at least one extended buffer status index table; an index table selection unit that selects one of the buffer status index table and the at least one extended buffer status index table; An index determination unit for determining an index corresponding to the data amount in the one index table based on the data amount in the terminal buffer; and an index transmission unit for transmitting the index to the base station.

  According to another aspect of the present invention, a method for reporting a buffer status of a terminal is provided. The terminal includes a buffer status index table and at least one extended buffer status index table, and the method includes one of the buffer status index table and the at least one extended buffer status index table. An index table selection step for selecting an index table; an index determination step for determining an index corresponding to the data amount in the one index table based on the data amount in the terminal buffer; and the index to the base station An index transmission step of transmitting is included.

  According to another aspect of the present invention, a base station is provided. The base station includes: a buffer status index table; at least one extended buffer status index table; an index table selection unit for selecting one of the buffer status index table and the at least one extended buffer status index table. An index receiving unit for receiving an index from the terminal; and a data amount determining unit for determining a data amount in the terminal buffer from the one index table based on the index.

  According to another aspect of the present invention, a method for obtaining a buffer status report at a base station is provided. The base station includes a buffer status index table and at least one extended buffer status index table, and the method includes one of the buffer status index table and the at least one extended buffer status index table. An index table selecting step for selecting one index table; an index receiving step for receiving an index from the terminal; and a data amount determining step for determining the data amount in the terminal buffer from the one index table based on the index described above including.

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

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

The above and other objects, features and advantages of the present invention can be more easily understood by describing embodiments of the present invention with reference to the accompanying drawings. The parts in the drawings are only for illustrating the principle of the present invention. The same or similar technical features or parts in the drawings are denoted by the same or similar reference numerals.
FIG. 3 is a block diagram of a terminal according to an embodiment of the present invention. 7 is a flowchart of a reporting method of a terminal BSR according to an embodiment of the present invention. FIG. 3 is a block diagram of a base station according to one embodiment of the present invention. 4 is a flowchart of a method for obtaining a BSR at a base station according to an embodiment of the present invention. FIG. 6 is a diagram illustrating RRC (Radio Resource Control) signaling used in a method for reporting a BSR at a terminal and / or a method for obtaining a BSR at a base station according to one embodiment of the present invention. FIG. 5 is a diagram illustrating MAC (Media Access Control) signaling used in a method of reporting a BSR at a terminal and / or a method of acquiring a BSR at a base station according to one embodiment of the present invention. FIG. 6 is a diagram illustrating MAC signaling used in a method of reporting a BSR at a terminal and / or a method of acquiring a BSR at a base station according to one embodiment of the present invention. FIG. 6 is a diagram illustrating MAC signaling used in a method of reporting a BSR at a terminal and / or a method of acquiring a BSR at a base station according to one embodiment of the present invention. FIG. 6 is a diagram illustrating MAC signaling used in a method of reporting a BSR at a terminal and / or a method of acquiring a BSR at a base station according to one embodiment of the present invention. It is a figure which shows the conventional BSR index table. It is a figure which shows the BSR index table of a nonpatent literature 2, The maximum buffer data amount is 1200K among them. It is a figure which shows the extended BSR index table by one Example of this invention, The range of the buffer data amount is 150K to 1200K among them. It is a figure which shows the extended BSR index table by one Example of this invention, The range of the buffer data amount is from 150K to 1500K among them. 1 is a structural block diagram of a general-purpose personal computer capable of realizing a method and / or apparatus according to an embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For the sake of brevity and clarity, all features of an actual embodiment are not described herein. However, it should be understood that in the course of developing any actual embodiment of this type, many decisions specific to the embodiment must be made to achieve the developer's specific goals. For example, it is necessary to meet the restriction conditions related to the system and the business, and these restriction conditions may change as the embodiments are different. It should be further understood that development work is very complex and time consuming, but for those skilled in the art who benefit from the content of the present disclosure, this type of development work is only routine.

  The need for further explanation here is that in order to avoid obscuring the present invention due to unnecessary details, the drawings show only the structure of the apparatus and / or processing steps in relation to the technical solution according to the present invention. The other details not related to the present invention are omitted.

  As described above, an object of the present invention is to extend the BSR index table in order to adapt to a higher data transfer rate. In the technical solution of the present invention, at least one extended BSR index table is further added in addition to the conventional BSR index table. Furthermore, the embodiment of the present invention provides a BSR reporting method, acquisition method, and related base station, terminal, and communication system when at least one extended BSR index table is added.

  The embodiment of the present invention provides a terminal that is applied when at least one extended BSR index table is added. FIG. 1 is a block diagram of a terminal 100 according to one embodiment of the present invention. As shown in FIG. 1, the above-described terminal 100 includes a BSR index table 102, an extended BSR index table 104, an index table selection unit 106, an index determination unit 108, and an index transmission unit 110.

  Note that only one extended BSR index table 104 is shown in FIG. 1 to simplify the drawing. However, FIG. 1 is only an example, and the present invention is not limited to this. As is apparent, 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 conventional BSR index table shown in FIG. For example, the buffer data range of the BSR index table 102 is, for example, from 0 to 150K, and is divided into 64 subsections by the method of Non-Patent Document 1. The BSR index table 102 is not limited to this. For example, the range of the buffer data is not necessarily 0 to 150K, and may be any other range. Also, the number of small sections is not necessarily 64, but may be any other number. However, in the following description, the description will be given by taking as an example a case of 0 to 150K and 64 small sections.

  Referring to FIG. 1, the extended BSR index table 104 may be an index table obtained by extending a conventional BSR index table in order to adapt to a higher data transfer rate.

  In one embodiment, the buffer data amount range of the extended BSR index table 104 may have a continuation relationship with the buffer data amount range of the BSR index table 102. For example, the lower limit of the range of the buffer data amount in the extended BSR index table 104 may be the upper limit of the range of the buffer data amount in the BSR index table 102, for example, 150K, and the extended BSR index table 104 described above. The upper limit of the range of the buffer data amount may be the maximum buffer data amount specified in the protocol standard or determined according to the actual application situation, for example, 1200K or 1500K.

  In another embodiment, the buffer data amount range of the extended BSR index table 104 may have a comprehensive relationship with the buffer data amount range of the BSR index table 102. For example, the extended BSR index table 104 may be the extended BSR index table of Non-Patent Document 2. In this case, the lower limit of the range of the buffer data amount of the extended BSR index table 104 is the same as the lower limit of the range of the buffer data amount of the BSR index table 102, and may be 0, for example, or the extended BSR index table The upper limit of the range of the buffer data amount of 104 may be, for example, the maximum buffer data amount defined in the protocol standard or determined according to the actual application situation, for example, 1200K or 1500K.

  As for the extended BSR index table 104 and the BSR index table 102, the range of the buffer data amount can be divided into a plurality of small sections by various appropriate methods. For example, the range of the buffer data amount may be divided into a plurality of small sections by the method of Non-Patent Document 1. FIGS. 12 and 13 respectively show the extended BSR index tables obtained by the method of Non-Patent Document 1, and the ranges of the buffer data amount are 150K to 1200K and 150K to 1500K, respectively. Note that the extended BSR index table 104 is not limited to this. For example, the number of small sections is not necessarily 64, but may be any other number. However, in the following description, the description will continue with an example of 64 small sections.

  Further, with further development of communication technology, there is a possibility that the amount of data that the terminal needs to report further increases. Therefore, a plurality of extended BSR index tables may be employed. When there are a plurality of extended BSR index tables, the range of the buffer data amount of each extended BSR index table may be a continuation relationship or a comprehensive relationship.

  In one embodiment of the present invention, there may be a continuation relationship between ranges of the buffer data amount of each extended BSR index table. Specifically, the amount of data that the terminal needs to report may be divided into several consecutive section stages, and each section stage may be indicated by one extended BSR index table.

  In another embodiment of the present invention, there may be a comprehensive relationship between the ranges of the buffer data amount of each extended BSR index table. Specifically, each extended BSR index table has a lower limit of the same buffer data range, e.g., 0K, but each extended BSR index table has different buffer data ranges to accommodate various different data rates. Has an upper limit.

  Referring back to FIG. 1, the index table selection unit 106 selects one index table from the buffer status index table 102 and the at least one extended buffer status index table 104, and the selection result is returned to the index determination unit 108. Used to notify Further, the index table selection unit 106 may actively select and notify the selection result to the base station by instruction signaling, or passively select based on the instruction signaling from the base station. May be done (not shown in Figure 1).

  In one embodiment, the index table selection unit 106 passively selects one of the buffer status index table 102 and the at least one extended buffer status index table 104 based on indication signaling from the base station. To do. Specifically, the index table selection unit 106 receives instruction signaling from the base station, determines which index table to select based on the instruction signaling, and sends the selection result to the index determination unit 108. Notice.

  In another embodiment, the index table selection unit 106 actively selects one index table of the buffer status index table 102 and the at least one extended buffer status index table 104, and the selection result is an index determination unit. And the selection result is notified to the base station by instruction signaling.

  When the index table selection unit 106 actively selects, the index table selection unit 106 first selects an index table based on the terminal buffer data amount or based on the terminal type and the terminal buffer data amount. May be.

  In one embodiment, the index table selection unit 106 can select an index table based on the amount of buffer data of the terminal. For example, when the index table selection unit 106 recognizes that the buffer data amount (size) of the terminal is in the range from 0 to 150K, the index table selection unit 106 selects the BSR index table 102. When the index table selection unit 106 recognizes that the buffer data amount (size) of the terminal exceeds 150K, the index table selection unit 106 selects the extended BSR index table 104. When there are a plurality of extended BSR index tables, the index table selection unit 106 can select the corresponding extended BSR index table based on the buffer data amount (size) of the terminal.

  In another embodiment, the index table selection unit 106 can select an index table based on the type of terminal and the amount of terminal buffer data. For example, when the index table selection unit 106 recognizes that the terminal is an LTE facility, the index table selection unit 106 selects the buffer status index table 102. When the index table selection unit 106 knows that the terminal is an LTE-A facility, the index table selection unit 106 may directly select the extended buffer status index table 104, or further, the buffer data amount of the terminal In other words, when the buffer data amount (size) of the terminal is in the range from 0 to 150K, the buffer status index table 102 is selected and the terminal buffer data amount (size) is 150K. Is exceeded, the extended buffer status index table 104 is selected. Further, when there are a plurality of extended BSR index tables, the index table selection unit 106 can select the corresponding extended BSR index table based directly on the buffer data amount (size) of the terminal.

  Subsequently, the index table selection unit 106 may notify the selection result directly to the index determination unit 108, and may notify the selection result to the base station by instruction signaling.

  Thus, as can be seen, when the index table selection unit performs active selection or passively performs selection, the terminal and the base station relate to which index table the index corresponds to by instruction signaling. Information needs to be transmitted. Among them, the instruction signaling may be various appropriate protocol messages. For example, the instruction signaling may be radio resource control (RRC) signaling or media access control (Media Access Control) signaling. .

  If the terminal receives instruction signaling from the base station and selects an index table based on this instruction signaling, the instruction signaling may be RRC signaling, for example.

  In one embodiment, the index table selection unit 106 can determine which index table to select by receiving RRC signaling as instruction signaling from the base station. For example, as shown in FIG. 5, the index table selection unit 106 determines which index table should be selected by receiving index table indication information in RRC connection setup signaling from the base station. be able to.

  On the other hand, when the terminal actively selects the BSR index table and notifies the base station of the selection result by instruction signaling, the index table selection unit 106 in the terminal shall use RRC signaling or MAC signaling as instruction signaling. The base station can be notified of the selected index table, i.e., the base station is notified of information regarding which of the BSR index table and the BSR extended buffer status index table the index received by the base station corresponds to. can do.

  In one embodiment, the index table selection unit 106 may notify the base station of the selected index table by using RRC signaling as instruction signaling.

  In one specific embodiment, for example, as shown in FIG. 5, the index table selection unit 106 performs RRC connection request signaling including index table instruction information or RRC connection setup complete (RRC Connection Setup Complete). ) The selected index table may be notified to the base station by transmitting signaling to the base station.

  In another embodiment, the index table selection unit 106 may notify the base station of the selected index table by using MAC signaling as instruction signaling.

  In one specific embodiment, an index table selection unit (also referred to as “table selection unit”) 106 uses a logical channel identity (LCID) (also referred to as “logical channel identifier”) in MAC signaling. Thus, it is possible to notify the base station which index table has been selected. Specifically, if the BSR value is from the extended BSR index table 104, one new LCID is defined for each of the long BSR, shot BSR, and shortened BSR, and the index table selection unit 106 By using the defined LCID value, it is possible to indicate the type of BSR and that the terminal is using the extended BSR index table. If the BSR value is from the BSR index table 102, the index table selection unit 106 uses the LCID value defined in the current protocol, so that the terminal is using the BSR index table 102. It can be shown that.

  For example, as shown in FIG. 6, three new LCID values 01011, 01100 and 01101 are defined, of which LCID = 01011 is that the BSR in this MAC signaling is a long BSR and the BSR value is an extended BSR index LCID = 01100 indicates that the BSR in this MAC signaling is a shot BSR and the BSR value is from an extended BSR index table, and LCID = 01101 It indicates that the BSR in this MAC signaling is a shortened BSR and that the BSR value is from the extended BSR index table. In this way, the terminal can indicate that the BSR type and the selected index table are the extended BSR index table based on the three newly defined LCID values. Also, the logic values shown in FIG. 6 are merely examples and are not intended to be limiting. As will be apparent, other suitable forms of logic values may be employed.

  In this specific embodiment, using the newly defined LCID value, the BSR type and the BSR index table type are notified to the base station in a simple manner. However, in this specific embodiment, the four logic channel groups in the long BSR are not distinguished. In other words, it does not specifically indicate from which index table all logic channel groups in the long BSR, for example, BSRs from BS # 0 to BS # 3, respectively.

  In order to select an appropriate index table more accurately based on the data amount of each logic channel group, it is necessary to notify the base station which index table is used by each logic channel group of the terminal. Thus, in another specific embodiment, one additional byte is added to the MAC signaling, and the index table selection unit 106 uses the LCID in the MAC signaling and at least some of the bits in this additional byte, so that the terminal It is possible to notify the base station which index table is selected for each logic channel group.

  Specifically, for shot BSRs or shortened BSRs, the index table selection unit 106 uses the LCID value already defined in the current protocol to determine whether the terminal is in the BSR index table 102, as in the specific embodiment described above. And the newly defined LCID value indicates that the terminal is using the extended BSR index table 104. In other implementations, it is not necessary to define a new LCID, and one bit in the additional byte may indicate whether a BSR index table is used or an extended BSR index table. . This is the same as the case of the next long BSR.

  For a long BSR, if all BSRs of the four logic channel groups in the long BSR can be represented by the BSR index table 102 (for example, if the buffer data amount of each logic channel group report is less than 150K), the index table The selection unit 106 can represent this case by the existing LCID value in the protocol. Further, when one or a plurality of BSRs in the four logic channel groups in the long BSR are applied to the extended BSR index table 104 (for example, the buffer data amount of the report of at least one logic channel group is larger than 150K). The index table selection unit 106 indicates that the new LCID value indicates that the BSR type is long BSR and not all use the BSR index table, and the four digits of the additional bytes indicate this. It may further indicate which index table each BSR of the four logic channel groups in the long BSR is from. Specifically, the index table selection unit 106 uses an existing LCID value or a newly defined LCID value to indicate that the type of BSR is a long BSR, and further, among the LCID value and additional bytes. 4 digits may be used to indicate which BSR index table each BSR of the four logic channel groups in this long BSR is. However, it is possible to use only an existing LCID without defining a new LCID. At this time, the LCID is used only to indicate the type of BSR, and which index table each logic channel group corresponds to is completely represented by the bits of the additional bytes described above.

For example, as shown in FIG. 7, the index table selection unit 106 uses the last four digits (BTI ₀ , BTI ₁ , BTI ₂ , BTI ₃ ) of the additional bytes to generate four logics in the long BSR. Indicates from which index table each BSR of a channel group is derived. For example, when the LCID value corresponds to the long BSR and (BTI ₀ , BTI ₁ , BTI ₂ , BTI ₃ ) = 1010, the BSR values of the logic channel groups BS # 0 and BS # 2 in the long BSR Can be shown from the extended BSR index table 104, and the BSR values of the logic channel groups BS # 1 and BS # 3 are from the BSR index table 102. Note that the setting of the logic value shown in FIG. 7 is merely an example, and is not intended to limit the present invention. As will be apparent, any other suitable form of logic value setting may be employed. For example, other 4 digits may be used instead of the last 4 digits of the additional bytes, 1 may represent the BSR index table 102, and 0 may represent the extended BSR index table.

  In another specific embodiment, the index table selection unit 106 uses the LCID in the MAC signaling and the reserved bit in the subhead to select which index table the terminal selects for the base station. May be notified. Specifically, using the two digits of the LCID value and the two reserved digits of the subhead, the base station determines which index table the terminal has selected for each logic channel group. You may be notified.

  In the current LTE system, by considering that the LCID value with a value range of 01011-11001 is a pending LCID, the index table selection unit 106 is 10000, 10001, 10010 and Using the last two digits of the four LCID values of 10011 and the two reserved digits RR before the subhead, the terminal may indicate which index table is selected for each logic channel group. Good.

  For example, when RR = 00 and LCID = 10011, the BSR is a long BSR, and the BSR values of the logic channel groups BS # 0 and BS # 1 of the long BSR are from the BSR index table 102, It may indicate that the BSR values of the logic channel groups BS # 2 and BS # 3 are from the extended BSR index table 104. Further, the setting of the logic value and the reserved value of the selected LCID shown in FIG. 8 are merely examples, and are not intended to limit the present invention. As will be apparent, other suitable forms of logic value settings and LCID hold values may be selected, and 1 may represent the BSR index table 102 and 0 may represent the extended BSR index table.

  In the specific embodiment described above, there is no distinction as to whether the number of extended BSR index tables is two or three or more. Therefore, in another specific embodiment, one additional byte is added to the MAC signaling, and the index table selection unit 106 uses the LCID of the MAC signaling and this additional byte to allow the terminal to It can indicate that one of the BSR index tables is selected.

  For example, for a shot BSR or a shortened BSR, the index table selection unit 106 indicates that the terminal is using the BSR index table 102 by the LCID value already defined in the current protocol, and the newly defined LCID value. Indicates that the terminal is using the extended BSR index table, and the table number of the additional bytes Oct1 in FIG. 9B indicates which extended BSR index table is used. Good. In other implementations, there is no need to define a new LCID, and the index number used may be indicated by the table number in the additional bytes. This is the same as the case of the next long BSR.

  For the long BSR, if all the BSRs of the four logic channel groups of the long BSR can be represented by the BSR index table 102 (for example, if the buffer data amount of each logic channel group is less than 150K), the index The table selection unit 106 can represent this case by the existing LCID value in the protocol. When one or a plurality of BSRs out of four logic channel groups of the long BSR are applied to the extended BSR index table 104 (for example, at least one logic channel group report buffer data amount is all larger than 150K) ), The new LCID value indicates that the terminal is using the long BSR and not all using the BSR index table, and the additional byte in FIG. 9 (a). The table number of each of the long BSRs further indicates from which index table the BSRs of the four logic channel groups of the long BSR belong. Specifically, the index table selection unit 106 uses an existing LCID value or a newly defined LCID value to indicate that the type of BSR is a long BSR, and further, out of the LCID value and additional bytes. This table number can indicate which BSR index table each BSR of the four logic channel groups in the long BSR is from. However, a new LCID may not be defined and only an existing LCID may be used. At this time, the LCID is used only to indicate the type of BSR, and the index table to which each logic channel group corresponds is completely represented by the bits in the additional bytes described above.

  In the additional byte, a 2-digit table number can indicate which BSR index table the corresponding BSR value is from. Note that the logic value setting and the number of digits representing the table number shown in FIG. 9 are merely examples, and are not intended to limit the present invention. As will be apparent, other suitable forms of logic value settings may be employed, and other numbers of digits may be employed to represent the table number.

  Also, the above-described specific example described with reference to FIG. 7 may be regarded as another embodiment of the above-described specific example described with reference to FIG. Specifically, in the above-described specific embodiment described with reference to FIG. 7, one extended BSR index table is used, and one-digit table number indicates that the BSR index table and the extended BSR index table are In the above-described specific example described with reference to FIG. 9, while referring to a plurality of extended index tables, and using a two-digit table number, This indicates which index table is used among the BSR index table and the extended BSR index table.

  Referring again to FIG. 1, the index determination unit 108 obtains a corresponding index from the index table selected by the index table selection unit 106 based on the buffer data amount of the terminal, and the index transmission unit 110, and is transmitted to the base station by the index transmission unit 110.

  Therefore, a terminal that is applied when at least one extended BSR index table is added is realized.

  Accordingly, embodiments of the present invention further provide a base station that applies when at least one extended BSR index table is added. FIG. 3 is a block diagram of a base station 300 according to one 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 reception unit 306, an index table selection unit 308, and a data amount determination unit 310.

  In order to simplify the drawing, only one extended BSR index table 304 is shown in FIG. Note that FIG. 3 is merely an example, and the present invention is not limited to this. As is apparent, 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 can correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. Therefore, for the sake of brevity, the detailed description of the BSR index table 302 and the extended BSR index table 304 is omitted here.

  Referring to FIG. 3, the index table selection unit 308 selects one index table from the buffer status index table 302 and the at least one extended buffer status index table 304, and the selection result is used as the data amount determination unit 310. Configured to notify. The index table selection unit 308 may actively select and notify the terminal of the selection result by instruction signaling, or may perform the selection passively based on instruction signaling from the terminal. Good (not shown in Figure 3).

  In one embodiment, the index table selection unit 308 passively selects one of the buffer status index table 102 and the at least one extended buffer status index table 104 based on instruction signaling from the terminal. May be. Specifically, the index table selection unit 308 receives instruction signaling from the terminal, determines which index table to select based on the instruction signaling, and notifies the index determination unit 310 of the selection result. To do.

  In another embodiment, the index table selection unit 308 actively selects one of the buffer status index table 302 and the at least one extended buffer status index table 304, and then selects the selection result as data. The amount confirmation unit may be notified directly, and the selection result may be notified to the terminal by instruction signaling.

  In one embodiment, the index table selection unit 308 may select an index table based on the type of terminal. Specifically, when the index table selection unit 308 knows that the terminal is an LTE facility, the index table selection unit 308 selects the selected buffer status index table 302 for this terminal. When the index table selection unit 308 knows that the terminal is an LTE-A facility, the index table selection unit 308 may select the extended buffer status index table 304 for this terminal.

  When the index table selection unit 308 actively performs selection, the index table selection unit 308 may notify the selection result directly to the index reception unit 306 and notify the terminal of the selection result by instruction signaling.

  Therefore, as can be seen, when the index table selection unit performs active selection or passive selection, between the terminal and the base station, it is related to which index table the index corresponds to by instruction signaling. Information needs to be transmitted. Among them, the instruction signaling may be various appropriate protocol messages. For example, the instruction signaling may be radio resource control (RRC) signaling or media access control (Media Access Control) signaling. .

  When the base station actively selects the BSR index table and notifies the selection result to the terminal by instruction signaling, the instruction signaling may be RRC signaling, for example.

  In one embodiment, the index table selection unit 308 may send RRC signaling as instruction signaling to the terminal to notify which index table the terminal should select. For example, as shown in FIG. 5, the index table selection unit 308 in the base station transmits RRC connection setup signaling to the terminal and notifies which index table the terminal should select by this signaling. May be.

  On the other hand, when the base station receives the instruction signaling from the terminal, the index table selection unit 308 in the base station receives RRC signaling or MAC signaling as the instruction signaling from the terminal (that is, the index receiving unit 30 in the base station receives Index to obtain information on which of the BSR index table and the BSR extended buffer status index table corresponds to), and based on the BSR index table indication information in this indication signaling, the index A table may be selected.

  In one embodiment, the index table selection unit 308 may receive RRC signaling as indication signaling from the terminal and may select an index table based on the indication signaling.

  In one specific embodiment, for example, as shown in FIG. 5, the index table selection unit 308 performs RRC connection request (RRC Connection Request) signaling or RRC connection setup complete signaling from the terminal. Based on this, an index table may be selected.

  In another embodiment, the index table selection unit 308 receives MAC signaling from the terminal as instruction signaling, so that it can grasp which index table is selected by the terminal.

  In one specific embodiment, the index table selection unit 308 can determine which index table the terminal is selecting based on the LCID in the MAC signaling obtained from the terminal.

  In another specific embodiment, the index table selection unit 308 determines which index table the terminal is selecting based on the LCID of MAC signaling and at least some bits of one additional byte. It can be confirmed.

  In another specific embodiment, the index table selection unit 308 may determine which index table the terminal is selecting based on the LCID in the MAC signaling and the reserved bit in the subhead.

  For specific details of MAC signaling and RRC signaling, reference may be made to the above description described with reference to FIG. 5 to FIG. Omitted.

  Referring back to FIG. 3, the index receiving unit 306 receives the selection result provided by the index table selection unit 308 and the index reported by the terminal (not shown in FIG. 3), and the received selection result and index. Is provided to the data amount determination unit 310.

  Further, in FIG. 3, the index table selection unit 308 transmits the index table selection result to the index selection unit 306, and the index selection unit 306 selects the index received from the terminal and the index table received from the index table selection unit 308. Although the results are shown to be provided to the data amount determination unit 310, FIG. 3 is exemplary only and the present invention is not limited thereto.

  For example, in another embodiment of the present invention, the index receiving unit may receive only the index and provide the received index to the data amount determining unit, and the index table selection unit may store the index table selection result as data. It may be sent directly to the quantity determination unit.

  In this case, the processing of the index table selection unit and the processing of the index reception unit may be performed simultaneously or may not be performed simultaneously. That is, the processing of the index table selection unit may be performed before or after the processing of the index receiving unit.

  Referring back to FIG. 3, the data amount determination unit 310 acquires the corresponding data amount range from the index table selected by the index table selection unit 308 based on the index received by the index reception unit 306, and Thus, the base station can obtain a buffer status report from the terminal.

  Therefore, a base station to be applied when at least one extended BSR index table is added is realized.

  Also, the embodiment of the present invention provides a terminal BSR-like reporting method applied when at least one extended BSR index table is added.

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

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

  Among them, the BSR index table and the extended BSR index table described above can correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. A description of the BSR index table and the extended BSR index table is omitted.

  The index table selection step described above may be performed actively by the terminal or may be performed passively based on instruction signaling from the base station.

  In one embodiment of the present invention, the above-described index table selection step may be actively executed by a terminal. Specifically, the terminal selects an index table based on the amount of data in the terminal buffer, or based on the amount of data in the terminal buffer and the type of the terminal, and also indicates the selection result by instruction signaling. Notify the base station.

  In one specific embodiment, the instruction signaling described above may be RRC signaling, for example, RRC connection request (RRC Connection Request) signaling or RRC connection setup complete signaling. Good.

  Specifically, in the index table selection step, the terminal may notify the base station of the selected index table through RRC connection request signaling or RRC connection setup complete signaling. .

  In other specific embodiments, the indication signaling described above may be MAC signaling.

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

  Alternatively, in the index table selection step, the terminal may notify the base station of the selected index table by using at least a part of the LCID in MAC signaling and one additional byte.

  Alternatively, in the index table selection step, the terminal may notify the base station of the selected index table using the two-digit bit of the LCID in the MAC signaling and the reserved bit in the subhead.

  Meanwhile, in another embodiment of the present invention, the above-described index table selection step may be executed based on instruction signaling from the base station. For example, the base station selects an index table based on the type of the terminal, notifies the selection result to the terminal by instruction signaling, and the terminal determines the selection index table based on the instruction signaling from the base station. You may choose.

  In one specific embodiment, the instruction signaling described above may be RRC signaling, for example, RRC connection setup signaling.

  Specifically, in the index table selection step, the base station may notify the selected index table to the terminal by RRC connection request (RRC Connection Setup) signaling.

  Among them, the specific use of RRC signaling and MAC signaling can be referred to the above-described contents described with reference to FIGS. 5 to 9, and here, in order to simplify the specification, The contents are omitted.

  Referring again to FIG. 2, subsequently, in step 204, an index is determined from the index table selected in step S202 based on the amount of data in the terminal buffer.

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

  Therefore, the terminal BSR is reported when at least one extended BSR index table exists.

  Accordingly, the embodiment of the present invention also provides a terminal BSR acquisition method that is applied when at least one extended BSR index table is added.

  FIG. 4 is a flowchart of a method for acquiring a BSR at a base station according to one embodiment of the present invention.

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

  The above-mentioned BSR index table and the above-mentioned extended BSR index table can correspond to the BSR index table 102 and the extended BSR index table 104 in FIG. 1, so here, for the sake of brevity of the specification, A description of the BSR index table and the extended BSR index table is omitted.

  Also, the above-described index table selection step may be executed actively by the base station, or may be executed passively based on instruction signaling from the terminal.

  In one embodiment of the present invention, the base station may actively perform the index table selection step described above. For example, the base station may select an index table based on the type of terminal, and may notify the selection result to the terminal by instruction signaling.

  In one specific embodiment, the instruction signaling described above may be RRC signaling, for example, RRC connection setup signaling.

  Meanwhile, in another embodiment of the present invention, the base station may perform the above-described index table selection step based on instruction signaling from the terminal. Specifically, the base station may select the index table based on instruction signaling from the terminal.

  In one specific embodiment, the indication signaling described above may be RRC signaling, eg, RRC connection request signaling and RRC connection setup completion signaling.

  In other specific embodiments, the indication signaling described above may be MAC signaling.

  For example, in the index table selection step, the base station may select an index table corresponding to the index based on the LCID in the MAC signaling from the terminal.

  Alternatively, in the index table selection step, the base station may select an index table corresponding to the index based on the LCID in the MAC signaling from the terminal and at least a part of one additional byte.

  Alternatively, in the index table selection step, the base station may select an index table corresponding to the index based on the two-digit bit of the LCID in the MAC signaling from the terminal and the reserved bit of the subhead.

  Among them, the specific details of RRC signaling and MAC signaling can be referred to the above-described contents described with reference to FIGS. 5 to 9, and here, for the sake of brevity, the contents are described. Is omitted.

  Referring to FIG. 4 again, subsequently, in step S404, an index receiving step is performed to receive the index from the terminal.

  Although FIG. 4 shows that the index receiving step is executed after the index table selecting step, FIG. 4 is merely an example, and the present invention is not limited to this. For example, the index table selection step may be performed simultaneously with the index reception step, or the index table selection step may be performed after the index reception step.

  Referring back to FIG. 4, subsequently, in step 406, the buffer data amount of the terminal is determined from the selected index table based on the received index.

  Therefore, it is realized that the base station receives the BSR report when at least one extended BSR index table exists.

  In addition to the base station, terminal, and method described above, the present invention also provides a communication system that is applied when at least one extended BSR index table is added. The communication system includes at least one terminal and at least one base station, wherein the terminal is a terminal according to the above-described embodiment, and the base station is a base station according to the above-described embodiment.

  In addition, it should be understood that the above-described various specific examples and examples are merely illustrative, and the present invention is not limited thereto. Further, the description in the drawings is only for explaining the present invention more clearly, and therefore does not have a meaning to limit the present invention.

  Each component module and unit in the above-described apparatus may be arranged by software, firmware, hardware, or a combination thereof. The specific means or schemes that can be used for the arrangement are well known to those skilled in the art and will not be described here. When realized by software or firmware, a program constituting the software is installed from a storage medium or a network to a computer having a dedicated hardware structure (for example, the general-purpose computer 1400 shown in FIG. 14). When this program is installed, various functions can be executed.

  In FIG. 14, the central processing unit (CPU) 1401 performs various processes based on a program stored in the read-only memory (ROM) 1402 or a program loaded from the storage unit 1408 to the random access memory (RAM) 1403. I do. The RAM 1403 may store data necessary when the CPU 1401 performs various processes as necessary. The CPU 1401, the ROM 1402, and the RAM 1403 are connected to each other via a bus 1404. An input / output interface 1405 is also connected to the bus 1404.

  The input / output interface 1405 includes an input unit 1406 (including a keyboard and a mouse), an output unit 1407 (a display such as a cathode ray tube (CRT) and a liquid crystal display (LCD), and a speaker. A storage unit 1408 (including a hard disk) and a communication unit 1409 (including a network interface card such as a LAN card and a modem). The communication unit 1409 performs communication processing via a network such as the Internet. A drive 1410 is also connected to the input / output interface 805 as needed. If necessary, a removable medium 1411 such as a magnetic disk, an optical disk, a magnetic optical disk, a semiconductor memory or the like is mounted on the drive 1410, so that a computer program read from the medium can be stored as necessary. Installed in 1408.

  When the above-described series of processing is realized by software, for example, a program that configures software can be installed from a network such as the Internet or a storage medium such as a removable medium 1411.

  As shown in FIG. 14, those skilled in the art understand that such a storage medium is not limited to the removable medium 811 in which a program is stored and distributed separately from the apparatus so as to supply the program to the user. I can do it. Examples of the removable medium 1411 include a magnetic disk (including a soft disk (registered trademark)), an optical disk (including an optical disk load-only memory (CD-ROM) and a digital versatile disk (DVD)), and a magnetic optical disk (mini disk). (Including MD) (registered trademark))), and semiconductor memory. Alternatively, the storage medium may be a ROM 1402 in which a program is stored and distributed to a user together with a device incorporating the program, a hard disk included in the storage unit 1408, or the like.

  The present invention also provides a program product that includes machine-readable instruction code. When this instruction code is read and executed by a machine, the above-described method according to an embodiment of the present invention can be executed.

  Correspondingly, a storage medium storing a program product including the above machine-readable instruction code is also included in the disclosure of the present invention. Examples of the storage medium include, but are not limited to, a floppy (registered trademark) disk, an optical disk, a magneto-optical disk, a memory card, and a memory stick.

  Lastly, it should be noted that in the text, the words “include”, “include”, or other variations are used to encompass a non-exclusive “include”, which The included process, method, article or device may include not only these elements, but also other elements not specified, or include unique elements possessed by the process, method, article or apparatus. In the absence of more limitations, an element defined by the phrase “including” does not exclude other identical elements present in the process, method, article, or apparatus containing the element.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this embodiment, and all modifications to the present invention are within the technical scope of the present invention unless departing from the spirit of the present invention.

  Therefore, as can be seen from the above description, the embodiments of the present invention provide the following technical solutions.

Technical solution 1: a terminal,
A buffer status index table;
At least one extended buffer state index table;
An index table selection unit for selecting one of the buffer status index table and the at least one extended buffer status index table;
Based on the amount of data in the terminal buffer, an index determination unit for determining an index corresponding to the amount of data in the one index table;
An index transmission unit for transmitting the above-mentioned index to a base station.

Technical plan 2: The above-mentioned terminal according to technical plan 1,
The index table selection unit is configured to select the one index table based on the amount of data in the terminal buffer,
The index table selection unit is configured to transmit instruction signaling to the base station, wherein the instruction signaling is configured such that the index includes the buffer state index table and the at least one extended buffer state index table. A terminal that indicates which of the

Technical plan 3: The above-mentioned terminal based on technical plan 2,
The index table selection unit described above is a terminal configured to transmit radio resource control signaling.

Technical plan 4: The above-mentioned terminal according to technical plan 3,
The index table selection unit described above is a terminal configured to transmit RRC connection request signaling or RRC connection setup completion signaling.

Technical plan 5: The above-mentioned terminal according to technical plan 2,
The index table selection unit described above is a terminal configured to transmit media access control signaling.

Technical plan 6: The above-mentioned terminal according to technical plan 5,
The index table selection unit uses the logic channel identifier in the media access control signaling described above, and the index is selected from the buffer status index table and the at least one extended buffer status index table. A terminal that is configured to represent corresponding.

Technical plan 7: The above-mentioned terminal according to technical plan 5,
The index table selection unit uses the logic channel identifier of the media access control signaling and at least some bits of one additional byte to convert the index into the buffer status index table and the above-described buffer status index table. A terminal configured to represent which of at least one extended buffer status index table corresponds to.

Technical plan 8: The above-mentioned terminal according to technical plan 5,
The index table selection unit uses the logic channel identifier of the media access control signaling and the reserved bit of the subhead, so that the index is the buffer status index table and the at least one extended buffer status. A terminal configured to represent which of the index tables corresponds.

Technology plan 9: It was the above-mentioned terminal by technology plan 1,
The index table selection unit determines to use one of the buffer status index table and the at least one extended buffer status index table based on the indication signaling received from the base station. Configured terminal.

Technical plan 10: The above-mentioned terminal according to technical plan 9,
The index table selection unit described above is a terminal configured to receive radio resource control signaling.

Technical plan 11: The above-mentioned terminal according to technical plan 10,
The index table selection unit described above is a terminal configured to receive RRC connection setup signaling.

Technical solution 12: The above-mentioned terminal according to any one of technical solutions 1-11,
The terminal of the buffer data amount corresponding to the buffer status index table and the at least one extended buffer status index table has an inclusion relationship.

Technical solution 13: The above-mentioned terminal according to any one of technical solutions 1-11,
The terminal of the buffer data amount corresponding to the above-mentioned buffer status index table and at least one extended buffer status index table has a continuation relationship.

Technical solution 14: A method for reporting the buffer status of a terminal,
The terminal includes a buffer status index table and at least one extended buffer status index table, and the method includes:
An index table selection step of selecting one index table of the buffer status index table and the at least one extended buffer status index table;
An index determination step for determining an index corresponding to the data amount in the one index table based on the data amount in the terminal buffer;
Transmitting an index as described above to a base station.

Technical proposal 15: The above-mentioned method according to technical proposal 14,
The index table selection step is configured to select the one index table described above based on the amount of data in the terminal buffer,
The above-described method further includes the step of sending indication signaling to the base station;
The method wherein the indication signaling represents which of the buffer status index table and the at least one extended buffer status index table corresponds to the index.

Technical solution 16: The above-mentioned method according to technical solution 15,
The method, wherein the indication signaling is radio resource control signaling.

Technical solution 17: The above-mentioned method according to technical solution 16,
The method, wherein the radio resource control signaling is RRC connection request signaling or RRC connection setup completion signaling.

Technical proposal 18: The above-mentioned method according to technical proposal 15,
The method wherein the indication signaling is media access control signaling.

Technical solution 19: The above-mentioned method according to technical solution 18,
A method using a logic channel identifier in the media access control signaling as described above to indicate which of the buffer status index table and the at least one extended buffer status index table corresponds to the index.

Technical proposal 20: The above-mentioned method according to technical proposal 18,
Using the logic channel identifier and at least some bits of one additional byte in the media access control signaling, the index is the buffer status index table and the at least one extended buffer status index table. A method to indicate which one of

Technical plan 21: The above-mentioned method according to technical plan 18,
Using the last two digits of the logic channel identifier in the media access control signaling and the reserved bit in the subhead, the index is the buffer status index table and the at least one extended buffer status. A method that indicates which of the index tables it corresponds to.

Technical plan 22: The above-mentioned method according to technical plan 14,
The method, wherein the index table selection step is configured to select one index table as described above based on indication signaling received from a base station.

Technical solution 23: The above-mentioned method according to technical solution 22,
The method, wherein the indication signaling is radio resource control signaling.

Technical plan 24: The above-mentioned method according to technical plan 23,
The method, wherein the radio resource control signaling described above is RRC connection setup signaling.

Technical plan 25: Base station,
A buffer status index table;
At least one extended buffer state index table;
An index table selection unit for selecting one of the buffer status index table and the at least one extended buffer status index table;
An index receiving unit for receiving an index from a terminal;
A data amount determining unit for determining a data amount in the terminal buffer from the one index table based on the index.

Technical plan 26: The above-mentioned base station according to technical plan 25,
The index table selection unit is configured to select the one index table based on the indication signaling received from the terminal, and the indication signaling includes the buffer status index table and the index status as described above. A base station representing which one of the at least one extended buffer status index table corresponds to.

Technical proposal 27: The above-mentioned base station according to technical proposal 26,
The index table selection unit described above is a base station configured to receive radio resource control signaling.

Technical proposal 28: The above-mentioned base station according to technical proposal 27,
The index table selection unit described above is a base station configured to receive RRC connection request signaling or RRC connection setup completion signaling.

Technical plan 29: The above-mentioned base station according to technical plan 27,
A base station, wherein the index table selection unit described above is configured to receive media access control signaling.

Technical plan 30: The above-mentioned base station according to technical plan 29,
The index table selection unit may determine whether the index is one of the buffer status index table and the at least one extended buffer status index table based on the logic channel identifier of the media access control signaling. A base station configured to determine if it is compatible.

Technical proposal 31: The above-mentioned base station according to technical proposal 29,
The index table selection unit is configured such that the index is based on the logic channel identifier of the media access control signaling and at least some bits of one additional byte, the index is the buffer status index table, and the buffer status index table. A base station configured to determine which of at least one extended buffer status index table corresponds to.

Technical plan 32: The above-mentioned base station according to technical plan 29,
The index table selection unit may determine whether the index is based on the bit of the logic channel identifier in the media access control signaling and the reserved bit of the subhead, and the index is the buffer status index table and the at least one of the above. A base station configured to determine which of the extended buffer status index tables corresponds.

Technical solution 33: The above-mentioned base station according to technical solution 25,
The index table selection unit is further configured to send instruction signaling to the terminal, wherein the instruction signaling includes any of the buffer status index table and the at least one extended buffer status index table. A base station that represents what is used.

Technical solution 34: The above-mentioned base station according to technical solution 33,
The index table selection unit described above is a base station configured to transmit radio resource control signaling.

Technical plan 35: The above-mentioned base station according to technical plan 34,
The index table selection unit described above is a base station configured to transmit RRC connection setup signaling.

Technical solution 36: The above-mentioned base station according to any one of the technical solutions 25-35,
A base station in which the buffer data amount section corresponding to the buffer status index table and the at least one extended buffer status index table has an inclusion relationship.

Technical solution 37: The above-mentioned base station according to any one of technical solutions 25-35,
The base station in which the buffer data amount section corresponding to the buffer status index table and the at least one extended buffer status index table has a continuation relationship.

Technical solution 38: A method for obtaining a buffer status report in a base station,
The base station includes a buffer status index table and at least one extended buffer status index table, and the method includes:
An index table selection step of selecting one index table of the buffer status index table and the at least one extended buffer status index table;
An index receiving step for receiving an index from the terminal;
A data amount determining step for determining a data amount in the terminal buffer from the one index table based on the index.

Technical proposal 39: The above-mentioned method according to technical proposal 38,
The index table selection step is configured to select the one index table described above based on the instruction signaling received from the terminal, and the instruction signaling includes the above-described index as the above-described buffer status index table and the above-described index table. A method representing which one of the at least one extended buffer status index table corresponds to.

Technical proposal 40: The above-mentioned method according to technical proposal 39,
The method, wherein the indication signaling is radio resource control signaling.

Technical solution 41: The above-mentioned method according to technical solution 40,
The method, wherein the radio resource control signaling is RRC connection request signaling or RRC connection setup completion signaling.

Technical solution 42: The above-mentioned method according to technical solution 39,
The method wherein the indication signaling is media access control signaling.

Technical solution 43: The above-mentioned method according to technical solution 42,
A method for determining which of the buffer status index table and the at least one extended buffer status index table corresponds to the index based on a logic channel identifier of the media access control signaling. .

Technical solution 44: The above-mentioned method according to technical solution 42,
Based on the logic channel identifier of the media access control signaling and at least some bits of one additional byte, the index is the buffer status index table and the at least one extended buffer status index table. A method to determine which one of them corresponds to.

Technical solution 45: The above-mentioned method according to technical solution 42,
Based on the bits of the logic channel identifier and the reserved bits of the subheads in the media access control signaling, the index is one of the buffer status index table and the at least one extended buffer status index table. A method to determine which one is supported.

Technical proposal 46: The above-mentioned method according to technical proposal 38,
Before the above-mentioned index receiving step, further comprising the step of sending indication signaling to the terminal;
The method wherein the indication signaling represents which of the buffer status index table and the at least one extended buffer status index table is used.

Technical solution 47: The above-mentioned method according to technical solution 46,
The method, wherein the indication signaling is radio resource control signaling.

Technical solution 48: The above-mentioned method according to technical solution 47,
The method, wherein the radio resource control signaling described above is RRC connection setup signaling.

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

Claims (10)

A terminal,
A first table showing a data amount interval in the buffer of the terminal;
At least one second table having a maximum data amount greater than the maximum data amount of the first table, also indicating a data amount interval in the buffer of the terminal;
A table selection unit for selecting one table from the first table and the at least one second table;
An index determination unit for determining an index from the one table selected by the table selection unit based on the amount of data in the buffer of the terminal;
An index transmission unit for transmitting the index to a base station;
Including
The table selection unit notifies the base station of media access control signaling including a logical channel identifier, and the index is selected from the first table and the at least one second table. Indicates the buffer size in the terminal. The terminal according to claim 1,
The data amount interval indicated by the first table and the data amount interval indicated by the at least one second table have an inclusive relationship. The terminal according to claim 2, wherein
The data amount interval indicated by the first table and the data amount interval indicated by the at least one second table have a continuation relationship. A method for reporting the buffer status of a terminal,
The terminal
A first table showing a data amount interval in the buffer of the terminal;
At least one second table having a maximum data amount greater than the maximum data amount of the first table, also indicating a data amount interval in the buffer of the terminal;
Including
The method
A table selection step of selecting one table from the first table and the at least one second table;
An index determining step for determining an index from the one table based on the amount of data in the buffer of the terminal;
An index transmission step of transmitting the index to a base station;
Including
The terminal notifies the base station of media access control signaling including a logical channel identifier, and the index is a buffer in the one table selected from the first table and the at least one second table. How to indicate the size. A base station,
A first table showing data volume intervals in the terminal buffer;
At least one second table having a maximum data amount greater than the maximum data amount of the first table, also indicating a data amount interval in the buffer of the terminal;
A table selection unit for selecting one table from the first table and the at least one second table;
An index receiving unit for receiving an index from the terminal;
A data amount determining unit for determining a data amount in the buffer of the terminal from the one stable selected by the table selection unit based on the index;
Including
Receiving media access control signaling including a logical channel identifier transmitted from the terminal, wherein the index indicates a buffer size in the one table selected from the first table and the at least one second table; Show, base station. The base station according to claim 5, wherein
The base station, wherein the data amount interval indicated by the first table and the data amount interval indicated by the at least one second table include an inclusion relationship. The base station according to claim 6, wherein
The base station, wherein the data amount interval indicated by the first table and the data amount interval indicated by the at least one second table have a continuation relationship. A method of obtaining a buffer status report at a base station,
The base station
A first table showing data volume intervals in the terminal buffer;
At least one second table having a maximum data amount greater than the maximum data amount of the first table, also indicating a data amount interval in the buffer of the terminal;
Including
The method
A table selection step of selecting one table from the first table and the at least one second table;
Receiving an index from the terminal; and
A data amount determining step for determining a data amount in the buffer of the terminal from the one table based on the index;
Including
Receiving media access control signaling including a logical channel identifier transmitted from the terminal, wherein the index indicates a buffer size in the one table selected from the first table and the at least one second table; Show, how. The method according to claim 8, comprising:
Prior to receiving the index, further comprising: transmitting indication signaling to the terminal to indicate which of the first table and the at least one second table is used. A communication system,
Including terminals and base stations,
The terminal
A first table showing a data amount interval in the buffer of the terminal;
At least one second table having a maximum data amount greater than the maximum data amount of the first table, also indicating a data amount interval in the buffer of the terminal;
A table selection unit for selecting one table from the first table and the at least one second table;
An index determination unit for determining an index from the one table selected by the table selection unit based on the amount of data in the buffer of the terminal;
An index transmission unit for transmitting the index to the base station;
Including
The table selection unit notifies the base station of media access control signaling including a logical channel identifier, and the index is selected from the first table and the at least one second table. Indicates the buffer size at
The base station
An index receiving unit for receiving the index from the terminal;
A data amount determining unit for determining a data amount in the buffer of the terminal based on the index;
Including a communication system.

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