WO2011160480A1 - 一种实现缓冲区状态上报的方法及*** - Google Patents

一种实现缓冲区状态上报的方法及*** Download PDF

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Publication number
WO2011160480A1
WO2011160480A1 PCT/CN2011/072303 CN2011072303W WO2011160480A1 WO 2011160480 A1 WO2011160480 A1 WO 2011160480A1 CN 2011072303 W CN2011072303 W CN 2011072303W WO 2011160480 A1 WO2011160480 A1 WO 2011160480A1
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Prior art keywords
buffer status
logical channel
level format
status level
buffer
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PCT/CN2011/072303
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English (en)
French (fr)
Inventor
黄亚达
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to MX2012008030A priority Critical patent/MX2012008030A/es
Priority to EP11797511.0A priority patent/EP2506629B1/en
Priority to KR1020127017915A priority patent/KR101410835B1/ko
Priority to US13/520,019 priority patent/US9055587B2/en
Priority to BR112012016268A priority patent/BR112012016268A2/pt
Priority to JP2012545074A priority patent/JP2013515408A/ja
Publication of WO2011160480A1 publication Critical patent/WO2011160480A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/12Flow control between communication endpoints using signalling between network elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1221Wireless traffic scheduling based on age of data to be sent

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and system for implementing a buffer state in a wireless network.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • PUSCH Physical Uplink Shared Channel
  • An uplink radio resource is allocated to each user terminal (User Equipment, UE for short) by an Evolved NodeB (eNB).
  • eNB Evolved NodeB
  • the access technology adopted by E-UTRAN is Orthogonal Frequency Division Multiplexing (OFDM) technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the radio resource management of E-UTRAN system has large bandwidth compared with the second generation mobile communication system. The characteristics of multi-time processes, its wireless resources appear in two dimensions of time and frequency, and the number of users that can be carried is greatly increased.
  • the Radio Resource Control (RRC) layer of the LTE system sends an RRC message to implement many operations such as establishing an RRC layer link, configuring system parameters, and transmitting UE capability parameters between the UE and the eNB.
  • the RRC message of the downlink is sent on a Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • Some common parameters related to the system, such as the cell frequency and the cell system bandwidth, are sent by the eNB to all intra-cell UEs in the broadcast message, and the broadcast message is sent on the Physical Broadcast Channel (PBCH). of.
  • PBCH Physical Broadcast Channel
  • the LTE system formulates uplink transmission resource allocation for users.
  • a special control message The control message dedicated to the resource allocation of the PUSCH is sent by the eNB to the UE, and the resource allocation control message is also referred to as an Uplink Grant (UL Grant), and the UL Grant is in the object.
  • the downlink downlink control channel (PDCCH) is transmitted on the downlink control channel (referred to as PDCCH).
  • PDCCH downlink control channel
  • the report is reported to the eNB in the form of a Buffer Status Report (BSR).
  • BSR Buffer Status Report
  • the Logical CHannel (LCH) of the UE is divided into four logical channel groups (LCGs) according to the priority level.
  • the BSR reports the group numbers and groups in each LCG. Information on the amount of data to be transmitted of all LCHs. Since the BSR is an important reference information for the eNB to perform reasonable radio resource scheduling for the UE, the LTE system specifies various types and transmission rules of the BSR.
  • the BSR is divided into a regular buffer status report (Regular BSR), a periodic buffer status report (RTB), and a padding status report (Padding BSR).
  • the trigger conditions for the regular buffer status report include:
  • the upper layer of the high priority logical channel can transmit data, and its priority is higher than the existing LCH data in the UE buffer area;
  • the BSR retransmission timer (RETX-BSR_TIMER) times out, and there is data that can be transmitted in the UE buffer.
  • the trigger condition of the periodic buffer status report is: if the BSR period timer (PERIODIC BSR TIMER) times out, the periodic buffer status report is triggered.
  • the trigger condition for the padding buffer status report is: if there is neither a regular buffer status report to be sent nor a periodic buffer status report to be sent, and the number of bits used for padding in the allocated uplink PUSCH resources If the sum of the size of the BSR Media Access Control Control Element (MAC CE) and its MAC subheader is greater than or equal to, the pad buffer status report is triggered.
  • MAC CE Media Access Control Control Element
  • the fill buffer status report is a padded BSR that complements the regular buffer status report and the periodic buffer status report, as opposed to the regular buffer status report and the periodic buffer status report. Can be classified as a non-filled BSR.
  • the padding buffer status report may allow the eNB to obtain the UE buffer LCG data change in a timely manner.
  • Both the normal buffer status report and the periodic buffer status report are encapsulated as one MAC Control Element (CE) in the Media Access Control Protocol Data Unit (MAC PDU).
  • CE Media Access Control Protocol Data Unit
  • the padding buffer status report is populated in the padding bits (Padding) of the MAC PDU.
  • the MAC PDU is sent on the PUSCH.
  • One MAC PDU is composed of one MAC header (header) and zero or more MAC control elements (CE). ), consisting of 0 or more MAC Service Data Units (SDUs) and optional padding bits (Padding).
  • the MAC header is composed of multiple MAC sub-headers, and each MAC sub-header corresponds to the MAC CE, MAC SDU or Padding arranged after the MAC header in the order of arrangement.
  • Figure 2, Figure 3 and Figure 4 show the structure of the MAC sub-header.
  • the LCID contained in the MAC sub-header is the type of the corresponding MAC CE or MAC SDU or Padding. The LCID of the above row is explained in Table 1. Table 1
  • F is the length of the corresponding MAC CE or MAC SDU or Padding
  • R is a reserved bit.
  • the Padding BSR can only transmit using the Padding bit of the MAC PDU.
  • the format of the BSR defined by the LTE system is two. As shown in Figure 5 and Figure 6, the BSR format shown in Figure 5 is called the short BSR format or the Truncated BSR format.
  • the BSR format shown in Figure 6 is called Long BSR format.
  • the BSR is carried by a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the UE triggers the BSR and only one LCG has data to be transmitted, the UE reports the BSR in the short BSR format.
  • the BSR triggered by the UE is a Regular BSR or a Periodic BSR, and multiple LCGs have data to be transmitted, the UE ⁇ The BSR is reported in the long BSR format.
  • the UE uses the truncated BSR. Format to report Padding BSR.
  • the BSR of a single LCG is represented by 6 bits. The value of this 6 bit is used as an index in the Buffer size level table of the BSR. The details of the table are shown in Table 2. Shown. Table 2
  • LTE release 8 To A counter? ? The definition of seeing is defined in the current LTE release 8 standard. In order to meet the needs of various wireless services that are currently growing rapidly in the future, the next evolution standard of LTE release 8 has also begun to enter the formulation process, that is, advanced LTE ( LTE-Advanced) standard.
  • advanced LTE LTE-Advanced
  • LTE-Advanced is the 3rd Generation Partner Project (3GPP) organization to meet the International Telecommunication Union (ITU) International Mobile Telecommunication-Advanced (IMT-Advanced) ) The standard introduced by the requirements.
  • the LTE-Advanced system is an evolved version based on the LTE release 8 system. It introduces many new technologies to meet the basic needs of IMT-Advanced, the most important one.
  • Technology is carrier aggregation. Due to the current shortage of wireless spectrum resources, the spectrum resources owned by mobile operators in the world tend to be scattered, and IMT-Advanced requires higher peak rate indicators (100 Mbps for high mobility and 1 Gbps for low mobility).
  • Frequency Division Duplexing supports up to 80MHz
  • Time Division Duplexing Time Division Duplexing, Referred to as TDD
  • the maximum support is 100MHz, so the amount of data that the UE can transmit is also increased several times compared with LTE.
  • MIMO Multiple Input Multiple Output
  • MIMO is also the core technology to improve the throughput of LTE-A systems.
  • the uplink rate of the UE will be increased to 10 times that of LTE.
  • the original BSR table can only represent a maximum of 150,000 data in fine-grained manner, and all other services greater than 150,000 belong to the same BSR level. That is, if the LTE BSR table is still used, the high-throughput LTE-A service will This makes it impossible for the network to distinguish the UE from the buffer status of 150,000 to 1500000, resulting in a resource that cannot be effectively allocated.
  • 3GPP adds at least one new BSR table based on the BSR table of LTE to meet the requirement of the buffer state of 150,000 to 1.500000 accurately under the LTE-A large service throughput.
  • how to use these tables after the UE supports multiple BSR forms has not been determined.
  • the technical problem to be solved by the present invention is to provide a method and system for implementing buffer status reporting, which improves the accuracy of a user reporting a buffer status in an LTE-A system.
  • the present invention provides a method for implementing a buffer status report, the method comprising: the user equipment using one of the original buffer status level format or the new buffer status level format. a buffer status of the channel; wherein, the newly added buffer status level format includes a plurality of formats greater than the original buffer status level The data amount interval boundary value of the maximum value of the data interval interval. among them,
  • the new buffer status level format includes multiple data volume levels, and each data volume level corresponds to one data volume interval; the data volume interval corresponding to the last data volume level in the original buffer status level format refers to greater than the data amount.
  • the value interval of the maximum value of the interval boundary, the data volume interval corresponding to the last M levels in the format of the newly added buffer state level is a data volume interval that is larger than the maximum value of the boundary of the data amount interval and increases in order ; M is an integer less than or equal to the number of data levels in the new buffer status level format.
  • the method further includes: the user equipment selecting a format of a buffer status level used according to the amount of buffer data in the logical channel group, and reporting a buffer status report of the logical channel group.
  • the step of the user equipment selecting the buffer status level format according to the buffer data volume in the logical channel group and reporting the buffer status report of the logical channel group includes: the user equipment reports only one When the buffer status report of the logical channel group is judged, the buffer data amount of the logical channel group is smaller than the maximum value of the data volume interval boundary in the original buffer status level format, and the logic is reported in the original buffer status level format.
  • the buffer status report for the channel group when the buffer data amount of the logical channel group is not less than the maximum value of the data volume interval boundary in the original buffer status level format, the logic is reported in the new buffer status level format.
  • the step of the user equipment selecting the buffer status level format according to the buffer data amount in the logical channel group and reporting the buffer status report of the logical channel group includes: the user equipment simultaneously reporting four When the buffer status report of the logical channel group is used, it is determined that the maximum value in the buffer data amount of the logical channel group is smaller than the maximum value of the data amount interval boundary in the original buffer status level format, and the original buffer status level is used.
  • the format reports the buffer status report of the logical channel group; determines that the maximum value of the buffer data volume of the logical channel group is not less than the maximum value of the data volume interval boundary in the original buffer status level format, and uses the new buffer.
  • the zone status level format reports the buffer status report for this logical channel group.
  • the method further includes: determining, by the evolved base station, whether the user equipment uses an original buffer status level format or a new buffer status level format, and notifying the user equipment of the determined result;
  • the step of reporting the buffer status of the logical channel in the format of the rushing area status level or the newly added buffer status level includes: after receiving the user equipment, using the buffer status indicated by the evolved base station
  • the level format reports the buffer status of the logical channel.
  • the eNodeB determines whether the user equipment should use the original buffer status level format or the new buffer status level format, and the evolved base station is based on the service traffic, data transmission rate, or service of the user equipment.
  • the attribute determines whether the user device should use the original buffer status level format or the new buffer status level format.
  • the present invention further provides a system for implementing buffer status reporting, the system comprising a user equipment, wherein the user equipment is set to: use an original buffer status level format or add a new A buffer status of the logical channel reported in the rush zone status level format; the newly added buffer status level format includes a plurality of data amounts larger than the maximum value of the data volume interval boundary in the original buffer status level format Interval boundary value. among them,
  • the new buffer status level format includes multiple data volume levels, and each data volume level corresponds to one data volume interval; the data volume interval corresponding to the last data volume level in the original buffer status level format refers to greater than the data amount.
  • the value interval of the maximum value of the interval boundary, the data volume interval corresponding to the last M levels in the format of the newly added buffer state level is a data volume interval that is larger than the maximum value of the boundary of the data amount interval and increases in order ; M is an integer less than or equal to the number of data levels in the new buffer status level format.
  • the user equipment is further configured to: select a buffer status level format used according to the buffer data amount in the logical channel group, and report a buffer status report of the logical channel group; wherein, When reporting the buffer status report of a logical channel group, it is determined that the buffer data volume of the logical channel group is smaller than the maximum value of the data volume interval boundary in the original buffer status level format, and the original buffer status level format is used for reporting.
  • the buffer status report of the logical channel group determining that the buffer data volume of the logical channel group is not less than the maximum value of the data volume interval boundary in the original buffer status level format, using the new buffer status level format report
  • the buffer status report of the logical channel group when reporting the buffer status report of the four logical channel groups simultaneously, determining that the maximum value of the buffer data volume of the logical channel group is smaller than the original buffer status level format
  • the buffer status report of the logical channel group is reported in the original buffer status level format; the maximum value in the buffer data amount of the logical channel group is not less than the original buffer status level.
  • the system further includes an evolved base station, and the evolved base station is configured to: determine, according to the service traffic, data transmission rate, or service attribute of the user equipment, whether the user equipment should use the original buffer status level format or add a new The zone status level format, and the determined result is notified to the user equipment.
  • the present invention further provides a user equipment for implementing buffer status reporting, where the user equipment is set to: use one of an original buffer status level format or a new buffer status level format.
  • the buffer state of the logical channel is reported; wherein the newly added buffer state level format includes a plurality of data volume interval boundary values that are larger than a maximum value of the data volume interval boundary in the original buffer state level format.
  • the new buffer status level format includes multiple data volume levels, and each data volume level corresponds to one data volume interval; the data volume interval corresponding to the last data volume level in the original buffer status level format is greater than The value interval of the maximum value of the boundary of the data volume interval, the data volume interval corresponding to the last M levels in the format of the newly added buffer state level is data larger than the maximum value of the boundary of the data amount interval and sequentially increasing Quantity interval; M is an integer less than or equal to the number of data levels in the new buffer status level format.
  • the user equipment is further configured to: select a buffer status level format to be used according to a buffer data amount in the logical channel group, and Reporting the buffer status report of the logical channel group; wherein, when only reporting the buffer status report of a logical channel group, determining that the buffer data volume of the logical channel group is smaller than the data in the original buffer status level format When the maximum value of the interval boundary is used, the buffer status report of the logical channel group is reported in the original buffer status level format; the buffer data amount of the logical channel group is determined not to be smaller than the data amount in the original buffer status level format.
  • the buffer status report of the logical channel group is reported in the format of the new buffer status level; when the buffer status report of the four logical channel groups is reported at the same time, the buffer of the logical channel group is judged.
  • the maximum value of the area data amount is smaller than the maximum value of the data volume interval boundary in the original buffer status level format
  • the buffer status report of the logical channel group is reported in the original buffer status level format;
  • the maximum value in the data volume of the punched area is not less than the maximum value of the boundary of the data volume interval in the format of the original buffer status level.
  • the user equipment is further configured to: receive, according to the service traffic, data transmission rate, or service attribute of the user equipment, whether the user equipment should use an original buffer status level format or a new buffer status level format. After that, the determined result is sent to the user equipment.
  • the solution of the invention can improve the accuracy of the status of the user reporting buffer in the LTE-A system.
  • FIG. 1 is a schematic diagram of a MAC PDU defined by the LTE standard
  • FIG. 2 to FIG. 4 are schematic diagrams of a MAC subheader defined by the LTE standard
  • FIG. 5 is a schematic diagram of a short BSR and a truncated BSR defined by the LTE standard
  • FIG. 7 is a schematic diagram of a method for implementing a buffer status report in an embodiment
  • FIG. 8 is a diagram showing an eNB distinguishing an original buffer status level format and adding a buffer by identifying a flag of a BSR table in the embodiment. Schematic diagram of the way the zone status level format. Preferred embodiment of the invention
  • the state level format can also be referred to as BSR Table 0.
  • the original buffer status level format includes 64 data volume levels (ie, levels 0 to 63), and each data volume level corresponds to one data volume interval, and the value of the endpoint of the data volume interval is called the data volume interval boundary value.
  • the boundary value of the interval corresponding to the level 63 that is, 150,000 is the maximum value of the data amount interval boundary.
  • the new buffer status level format contains a plurality of data volume interval boundary values that are larger than the maximum value of the data volume interval boundary in the original buffer status level format.
  • the method for implementing the buffer status reporting includes: the user equipment uses one of the original buffer status level format or the new buffer status level format to report the buffer status of the logical channel.
  • BSR table 1 the method of adding a new buffer status level format (referred to as BSR table 1) is described, and the manner of adding a plurality of new buffer status level formats is the same.
  • the difference in the format of the rush zone status level is that the indicated buffer data state is different.
  • the new buffer status level format also includes multiple data volume levels, and the number of data levels can be the same as the number of data levels in the original buffer status level format, that is, there are 64 levels, and it can also be The number of data levels in the punch status level format is different, that is, greater than 64 or less than 64.
  • Each data volume level in the new buffer status level format also corresponds to one data volume interval, and the data magnitudes in different data volume intervals have no intersection.
  • the format of the new buffer status level format can be various. For example, the data volume interval corresponding to the last data volume level in the original buffer status level format refers to the value interval larger than the maximum value of the data volume interval boundary.
  • the data amount interval corresponding to the last M levels in the newly added buffer status level format is a data amount interval larger than the maximum value of the data amount interval boundary and increasing in value; M is less than or equal to the newly added buffer.
  • Both the eNB and the UE support carrier aggregation technology, and the UE can support multiple buffer status level formats, that is, multiple BSR tables.
  • the BSR table is a defined BSR table in the LTE system, and the UE also supports the newly defined BSR Table 1 of the present invention. Examples are shown in Table 3.
  • the data size in the data volume interval corresponding to the last 16 levels is greater than the maximum value of the data amount interval boundary in the original buffer status level format of 150,000, and the corresponding data amount interval increases with the gradation value.
  • the values increase in turn, and the data between 150,000 and 1595876 is represented at a finer granularity.
  • Table 3 is for example only, wherein the number of levels, the value of M, the size of the capacity of the data volume interval corresponding to each level, and the maximum value of the data volume interval boundary corresponding to the last level can be determined according to system requirements. Make changes. table 3
  • the buffer state level format selected for use may be roughly classified into two types, that is, determined by the user side, that is, the UE, and determined by the network side, that is, the eNB.
  • Mode 1 the manner in which the UE determines the format of the buffer status level.
  • the user equipment can select the buffer status level format used according to its own algorithm or predefined rules. For example, the user equipment selects the buffer status level format used according to the buffer data amount in the logical channel group, or determines the buffer status level format according to the error of reporting the BSR (ie, the range corresponding to each BSR level).
  • the buffer data amount of the logical channel group is reported to correspond to the BSR value in the buffer status level format, that is, the corresponding status report is reported.
  • the user equipment can find the actual value of the buffer size in the corresponding buffer status level format, that is, the BSR table, by using an explicit identifier or a predefined rule.
  • the user equipment reports a buffer status report of a logical channel group and reports a Short BSR or a Truncated BSR, it determines that the buffer data volume of the logical channel group is smaller than the original buffer.
  • the buffer status report of the logical channel group is reported in the original buffer status level format; the buffer data amount of the logical channel group is determined not to be smaller than the original buffer status.
  • the buffer status report of this logical channel group is reported using the new buffer status level format. For example, if the data volume of this LCG is greater than 150,000, select BSR Table 1, otherwise select BSR Table 0. In addition to using the maximum value of the data interval interval in BSR Table 0, other threshold values can be used.
  • the UE Select BSR Form 1 and actually report a BSR level of 49. That is, the UE determines according to whether the actual buffer satisfies the selection threshold of the BSR table. It is also possible to flexibly set the minimum value 107 of the BSR table 1 as the selection threshold, and when the BS ⁇ 107, select the BSR table 0, otherwise select the BSR table 1.
  • the threshold may be notified to the UE by the base station, and different thresholds may be specified for each UE; or the threshold may be statically specified according to a protocol pre-defined rule, and the tampering of the signaling may be reduced.
  • the UE can select the BSR table according to the error rule, because the BS can be represented by the level 49 of the BSR form 1 or by the level 63 of the BSR form 0.
  • the buffer interval indicated by level 49 of the BSR table 1 is smaller, and the data amount of the indicated LCG is more accurate, so that the base station estimates the amount of data of the UE with less error, so the UE selects the level 49 of the BSR table 1.
  • the maximum value of the buffer data volume of the logical channel group is smaller than the original data buffer interval.
  • the buffer status report of the logical channel group is reported in the original buffer status level format; the maximum value in the buffer data amount of the logical channel group is not less than the data amount interval in the original buffer status level format.
  • the buffer status report of this logical channel group is reported using the new buffer status level format.
  • the BSR levels of different LCGs in a BSR are obtained from the same BSR table, that is, there is no BSR level represented by the existing BSR table 0 and a BSR level indicated by the BSR table 1 in the same BSR.
  • the BSR levels of all LCGs are BSR levels in BSR Table 0 or both are BSR Form 1
  • the BSR level in is selected by comparing the LCG with the largest buffer size and the threshold of the selected BSR table. Take Table 3 as an example.
  • the same BSR table should be used for the BSR in the same BSR format.
  • BSR forms such as Long BSR and Short BSR or Truncated BSR
  • different BSR tables can be selected. Due to the above table selection process, the base station did not participate, and the BSR table selected by the UE could not be known. Therefore, when the BSR table 1 is used, the BSR table 1 needs to carry the identifier indication.
  • the BSR level in the reported BSR is the corresponding BSR table 1. If the identifier is not carried, the default BSR table 0 is corresponding.
  • the existing UE does not know the version of the base station.
  • the network indicates the capability of the UE base station through broadcast or dedicated signaling (including RRC signaling or MAC CE) or Whether the base station supports the UE to report a new BSR form.
  • the indication information of the target base station is sent to the UE by using a handover command or a MAC CE.
  • the UE When the UE receives the indication of the transmission of the base station, and allows the UE to report the BSR table except the BSR table 0, the UE performs the BSR table selection and reports according to the foregoing procedure. When the UE does not receive the indication of the base station, the UE is allowed to report the BSR table. In the case of the external BSR table, the UE only uses the BSR table 0 to perform BSR reporting. Mode 2, the manner in which the eNB determines the format of the buffer status level.
  • the eNB determines whether the user equipment should use the original buffer status level format or the new buffer status level format according to the service traffic, the data transmission rate, or the service attribute of the user equipment, and notify the user equipment, the user of the determined result. After receiving the device, the device reports the buffer status of the logical channel in the buffer status level format indicated by the eNB. Different from the manner in which the UE determines the used table, based on the manner in which the eNB determines the used table, the eNB specifies the BSR table used by the UE from the receipt of the signaling through dedicated RRC signaling or MAC CE.
  • the eNB selects the BSR table 1 through broadcast or dedicated signaling (including RRC signaling, such as adding an optional identifier in the dedicated signaling IE MAC-MainConfig, not filling in to indicate that the BSR table 0 is selected, or the MAC CE is adding a new MAC CE.
  • Header set the LCID to a new value, to distinguish the MAC CE subheader from the BSR table with the change identifier, and replace the BSR form when the UE receives it; or LCID1 means use BSR form 0, LCID2 means use BSR form 1) Inform the UE which BSR form to use.
  • the eNB can use the user's traffic as the basis for selecting the BSR form.
  • the initial state UE uses the BSR table 0 to determine the BSR level and reports, and when the eNB detects that the service traffic of the UE increases and exceeds a preset threshold, the eNB indicates that the UE uses the BSR table 1 through broadcast or dedicated signaling, and after receiving the indication, the UE receives the indication.
  • the BSR table is used to determine the BSR level and is reported, and the base station also uses the BSR table 1 to parse the BSR reported by the UE.
  • the eNB broadcasts or specializes.
  • the signaling indicates that the UE uses the BSR table 0.
  • the UE After receiving the indication, the UE uses the BSR table 0 to determine the BSR level and reports the same.
  • the base station also uses the BSR table 0 to parse the BSR reported by the UE.
  • the eNB can also use the user's data transmission rate as a basis for selecting a BSR form. For example, when the eNB determines that the data transmission rate of the UE is greater than a preset threshold of the system, the designated UE uses the BSR table 1, and otherwise uses the BSR table 0.
  • the eNB may also use the user's service attributes as a basis for selecting a BSR form.
  • the designated UE uses the BSR table 1, otherwise the BSR table 0 is used.
  • the method can be used by the base station to know the BSR table currently used by the UE when the UE reports the BSR, so no new indication is needed to indicate the BSR table used by the current UE.
  • the UE sends a request to the eNB requesting to use the BSR form 1. After receiving the request, the eNB accepts or rejects the request. When the eNB accepts the request, it returns a consent message to the UE, and the UE reports the BSR using the BSR form 1. When the eNB rejects the request, it returns a reject message to the UE, and the UE continues to use the BSR form 0. When the eNB does not return any message, it can also be considered as agreeing to this request.
  • the UE sends a request to the eNB requesting to use BSR Form 0, and after receiving the request, the eNB accepts or rejects the request.
  • the eNB accepts the request, it returns a consent message to the UE, and the UE reports the BSR using the BSR form 0.
  • the eNB rejects the request it returns a reject message to the UE, and the UE continues to use the BSR Table 1.
  • the eNB does not return any message, it can also be considered as agreeing to this request.
  • the UE determines that the BSR table needs to be changed, it sends a message requesting to change the BSR table to the eNB, and the eNB instructs the UE to change the BSR table used. For example, when the UE determines that the traffic is increased and exceeds a certain threshold, the reporting measurement report requires the use of the BSR table 1. After receiving the eNB, the eNB indicates that the UE uses the BSR table 1. When the UE determines that the traffic is reduced and falls below a certain threshold, the reporting report requires the use of the BSR. Table 0, after receiving the eNB, the eNB instructs the UE to use the BSR Table 0.
  • the UE uses the maximum value of the data interval interval in the BSR table or the non-zero minimum value of the data interval interval, the UE reports the maximum value or the non-zero minimum value to the eNB, and the eNB determines the UE according to the maximum value or the non-zero minimum value.
  • the UE is indicated to the BSR form that the UE should use.
  • the eNB receives the maximum value of the data interval interval reported by the UE or the non-zero minimum value of the data interval interval, it is inferred that the current BSR table may have a limited buffer size range, and the BSR table needs to be replaced.
  • the eNB judges that the UE uses the BSR table 1 to more accurately represent the value of the LCG buffer data amount of the UE, and instructs the UE to use the BSR table 1.
  • the UE periodically reports the gradation value in the BSR table used by the UE and reports it to the eNB.
  • the eNB determines that the UE needs to change the BSR table, it indicates to the UE the BSR table that the UE should use. For example, the UE uses the BSR table 0, and the eNB determines that the current buffer occupancy rate of the UE is high when the eNB receives the tier value of the BSR table used by the UE for multiple times in the range of 60 to 63. It is possible to further improve that the eNB instructs the UE to use the BSR Table 1.
  • the UE uses the BSR table 1 and the eNB determines that the eNB determines that the tier value in the BSR table used by the UE is within the range of 0 to 3.
  • the current buffer occupancy rate is low and is likely to be further reduced.
  • the eNB instructs the UE to use BSR Table 0.
  • the eNB instructs the UE to perform the BSR table replacement, which ensures the correctness of the judgment and reduces the frequent use of the BSR table when the buffer occupancy rate changes widely in a short time. , reduce signaling interaction and waste of resources.
  • the embodiment further provides a user equipment that implements buffer status reporting, where the user equipment is set to: use one of the original buffer status level format or the newly added buffer status level format to report the logical channel. a buffer state; wherein the newly added buffer state level format includes a plurality of data volume interval boundary values that are greater than a maximum value of a data volume interval boundary in an original buffer state level format. among them,
  • the new buffer status level format includes multiple data volume levels, and each data volume level corresponds to one data volume interval; the data volume interval corresponding to the last data volume level in the original buffer status level format refers to greater than the data amount.
  • the value interval of the maximum value of the interval boundary, the data volume interval corresponding to the last M levels in the format of the newly added buffer state level is a data volume interval that is larger than the maximum value of the boundary of the data amount interval and increases in order ; M is less than or equal to the new buffer status level An integer of the number of data levels in the format.
  • the user equipment is further configured to: select a buffer status level format used according to the buffer data amount in the logical channel group, and report a buffer status report of the logical channel group.
  • the user equipment is configured to select a buffer status level format used according to the buffer data amount in the logical channel group in the following manner, and report a buffer status report of the logical channel group:
  • the original buffer status level When only the buffer status report of a logical channel group is reported, it is determined that the buffer data amount of the logical channel group is smaller than the maximum value of the data amount interval boundary in the original buffer status level format, and the original buffer status level is used.
  • the format reports the buffer status report of the logical channel group. When the buffer data volume of the logical channel group is not less than the maximum value of the data volume interval boundary in the original buffer status level format, the new buffer status level is used.
  • the buffer status report of the logical channel group is reported in the format; when the buffer status report of the four logical channel groups is reported at the same time, the maximum value of the buffer data volume of the logical channel group is determined to be smaller than the original buffer status level.
  • the buffer status report of the logical channel group is reported in the original buffer status level format; the maximum value in the buffer data amount of the logical channel group is not less than the original buffer.
  • the buffer status of this logical channel group is reported in the format of the new buffer status level. Report.
  • the user equipment is further configured to: receive, according to the service traffic, data transmission rate, or service attribute of the user equipment, whether the user equipment should use an original buffer status level format or a new buffer status level format. After that, the determined result is sent to the user equipment.
  • the present invention can improve the accuracy of the state of the user reporting a buffer in the LTE-A system.

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Description

一种实现緩冲区状态上报的方法及***
技术领域 本发明涉及无线通信技术领域, 特别涉及无线网络中一种实现緩冲区状 态上 "^的方法及***。
背景技术
第三代移动通信长期演进 ( Long Term Evolution, 简称 LTE ) ***的演 进型通用陆地无线接入网 ( Evolved Universal Terrestrial Radio Access Network, 简称 E-UTRAN ) 中, 上行链路的数据通过物理上行链路共享信道 ( Physical Uplink Shared Channel,简称 PUSCH )传输。由演进型基站( Evolved NodeB ,简称 eNB )分配上行链路无线资源给每个用户终端( User Equipment, 简称 UE ) 。 E-UTRAN 釆用的接入技术是正交频分复用技术(Orthogonal Frequency Division Multiplexing , 简称 OFDM )技术, E-UTRAN***的无线 资源管理和第二代移动通信***相比, 具有大带宽、 多时间进程的特点, 其 无线资源是以时间和频率两维出现的, 能够承载的用户数量大大增加。
LTE***的无线资源控制 ( Radio Resource Control, 简称 RRC )层会发 送 RRC消息来实现 UE和 eNB之间建立 RRC层链接、 配置***参数和传递 UE能力参数等许多操作。 其中, 下行链路的 RRC消息在物理下行链路共享 信道(Physical Downlink Shared Channel, 简称 PDSCH )上发送。 和***相 关的一些公共参数,例如小区频点和小区***带宽等信息则是由 eNB在广播 消息里向所有小区内 UE 发送, 广播消息是在物理广播信道 (Physical Broadcast Channel, 简称 PBCH )上发送的。 为了能给每个 UE按照自己的需求分配资源和提供服务, 以在上行传输 中实现较好的复用性能, 同时也为了充分灵活高效的利用***带宽, LTE系 统为用户的上行传输资源分配制定了专门的控制消息。 其中, 专用于对 PUSCH进行资源分配的控制消息是由 eNB发送给 UE的, 该资源分配控制 消息又称为上行链路授权 ( UpLink Grant, 简称 UL Grant ) , UL Grant在物 理下行链路控制信道 ( Physical Downlink Control Channel, 简称 PDCCH )上 发送。 为了保证给每个 UE合理的分配无线资源, LTE***要求 UE报告自己 緩冲区内存储的数据量状态,该报告以緩冲区状态报告( Buffer Status Report, 简称 BSR ) 的形式上报给 eNB。 在 LTE ***中, UE的逻辑信道(Logical CHannel, 简称 LCH )按照优先级的高低, 被分成 4个逻辑信道组( Logical Channel Group, 简称 LCG ) , BSR报告的就是各个 LCG的组序号和组内所 有 LCH的待传输数据量的信息。 由于 BSR是 eNB对 UE进行合理的无线资源调度的重要的参考信息, 因此 LTE***规定了多种 BSR的类型和发送规则。 根据触发 BSR的事件的 不同, BSR被分为常规緩冲区状态报告 ( Regular BSR )、 周期緩冲区状态报 告( Periodic BSR )和填充緩冲区状态报告( Padding BSR ) 。 其中, 常规緩冲区状态报告的触发条件包括:
1、 有高优先级逻辑信道的上层可传输数据到达, 其优先级比 UE緩冲 区内的现存 LCH数据的优先级高;
2、 服务小区变化;
3、 BSR重传定时器( RETX—BSR— TIMER )超时, 且 UE緩冲区内有可 传输的数据。 周期緩冲区状态报告的触发条件是:若 BSR周期定时器( PERIODIC BSR TIMER )超时, 则触发周期緩冲区状态报告。 填充緩冲区状态报告的触发条件是:若既无常规緩冲区状态报告待发送, 也无周期緩冲区状态报告待发送, 且已分配的上行链路 PUSCH资源中用于 填充的比特数量大于或等于 BSR媒体接入控制层控制元 (Media Access Control Control Element, 简称 MAC CE ) 以及其 MAC子头 ( subheader ) 的 大小之和, 则触发填充緩冲区状态报告。 填充緩冲区状态报告是填充型的 BSR, 是常规緩冲区状态报告和周期緩 冲区状态报告的补充, 相对的, 常规緩冲区状态报告和周期緩冲区状态报告 可以归入非填充型的 BSR。 当上行链路没有发送常规緩冲区状态报告和周期 緩冲区状态报告时, 填充緩冲区状态报告可以更及时的让 eNB获得 UE緩冲 区 LCG数据变化的情况。 常规緩冲区状态报告和周期緩冲区状态报告均封装为媒体接入控制层协 议数据单元 ( Media Access Control Protocol Data Unit, 简称 MAC PDU ) 中 的一个 MAC控制元(Control Element, 简称 CE ) 。 填充緩冲区状态报告则 是填充在 MAC PDU的填充比特( Padding ) 内。 MAC PDU是在 PUSCH上 进行发送的。 根据目前的 LTE MAC层的协议标准( 3Gpp TS36.321 )的定义, 前述的 MAC PDU如图 1所示, 一个 MAC PDU是由一个 MAC报头 (header ) 、 0 个或多个 MAC控制元( CE )、 0个或多个 MAC服务数据单元( Service Data Unit , 简称 SDU ) 以及可选的填充比特(Padding )组成。 MAC报头是由 多个 MAC子报头组成, 每个 MAC子报头按照排列的先后顺序, 依次对应 着 MAC报头后排列的 MAC CE、 MAC SDU或 Padding。 图 2、 图 3和图 4描述的是 MAC子报头的组成结构, MAC子报头内包 含的 LCID是所对应的 MAC CE或者 MAC SDU或 Padding的类型, 如上行 LCID的解释如表 1所示。 表 1
Figure imgf000005_0001
F为对应的 MAC CE或者 MAC SDU或 Padding的长短, R为保留位。 根据目前的 LTE MAC层的协议标准( 3Gpp TS36.321 )的定义, Padding BSR只能使用 MAC PDU的 Padding比特进行发送。
LTE***定义的 BSR的格式有两种, 如图 5和图 6所示, 图 5所示的 BSR格式称为短 BSR格式或截短( Truncated ) BSR格式, 图 6所示的 BSR 格式称为长 BSR格式。 BSR由物理上行链路共享数据信道( Physical Uplink Shared Channel, 简称 PUSCH )来承载。 当 UE触发了 BSR,且只有一个 LCG 有数据待传输时, UE釆用短 BSR格式来上报 BSR; 当 UE触发的 BSR是 Regular BSR或 Periodic BSR,且有多个 LCG有数据待传输, UE釆用长 BSR 格式来上报 BSR; 当 UE触发的 BSR是 Padding BSR, 且有多个 LCG有数 据待传输,且 MAC PDU 的 Padding比特长度不足以用来发送长 BSR格式时, UE釆用截短 BSR格式来上报 Padding BSR。 在上述的 BSR格式中 ,单个 LCG的 BSR都是有 6 bit来表示 ,这个 6 bit 的值作为 index在 BSR的緩冲区大小级别( Buffer size levels )表中查询使用, 表格具体内容如表 2所示。 表 2
Figure imgf000006_0001
12 49<BS<=57 44 7505 <BS <= 8787
13 57<BS<= 67 45 8787<BS<= 10287
14 67 < BS <= 78 46 10287 <BS<= 12043
15 78<BS<=91 47 12043 < BS <= 14099
16 91 <BS <= 107 48 14099 < BS <= 16507
17 107<BS<= 125 49 16507 <BS<= 19325
18 125 <BS <= 146 50 19325 <BS <= 22624
19 146<BS<= 171 51 22624 < BS <= 26487
20 171 <BS <= 200 52 26487 <BS<= 31009
21 200 < BS <= 234 53 31009 <BS<= 36304
22 234 < BS <= 274 54 36304 <BS<= 42502
23 274<BS<=321 55 42502 < BS <= 49759
24 321 <BS<=376 56 49759 <BS<= 58255
25 376 < BS <= 440 57 58255 <BS <= 68201
26 440<BS<=515 58 68201 <BS <= 79846
27 515 <BS <= 603 59 79846 < BS <= 93479
28 603 < BS <= 706 60 93479 < BS <= 109439
29 706 < BS <= 826 61 109439 <BS<= 128125
30 826 < BS <= 967 62 128125 <BS <= 150000
31 967<BS<=1132 63 BS > 150000
,以 A反逸??见则的定义均定义于目前的 LTE release 8标 准, 为了适应目前以及未来飞速增长的各种无线业务的需求, LTE release 8 的下一个演进标准也已经开始进入制定过程, 也就是先进的 LTE ( LTE- Advanced )标准。
LTE- Advanced 是第三代合作伙伴计划 ( the 3rd Generation Partner Project , 简称 3GPP ) 组织为 了 满足国 际电信联盟 ( International Telecommunication Union, 简称 ITU ) 先进的国际移动通讯 ( International Mobile Telecommunication-Advanced , 简称 IMT-Advanced ) 的要求而推出的 标准。 LTE-Advanced***是在 LTE release 8***基础上的一个演进版本, 它引入了很多新技术来满足 IMT-Advanced的基本需求, 其中最重要的一项 技术就是载波聚合。 由于目前无线频谱资源的紧缺性, 世界各移动运营商拥有的频谱资源往 往比较零散, 而 IMT-Advanced要求峰值速率的指标更高 (高移动性下支持 100Mbps, 低移动性下支持 lGbps ) , 以目前的 LTE标准最大 20MHz的带 宽是无法满足 IMT-Advanced要求的, 所以需要扩充到更高带宽, 比如频分 双工 (Frequency Division Duplexing, 简称 FDD )最大支持 80MHz, 时分双 工( Time Division Duplexing, 简称 TDD )最大支持 100MHz, 所以 UE能够 传输的数据量相对 LTE来说也增加了数倍。 除了带宽增加外, 为了达到更高 的速率, 多输入多输出 (Multiple Input Multiple Output, 简称 MIMO )也是 提升 LTE-A***吞吐量的核心技术。 综合考虑上行带宽增加(相对 LTE带 宽的 5倍)和上行双流 MIMO (相对 LTE单流的 2倍), 在 LTE-A***中, UE的上行速率将提高为 LTE的 10倍。 而原有的 BSR表格中仅能细粒度表示最大 150000的数据, 其余所有大 于 150000的业务都属于同一个 BSR级别, 即在如果仍然使用 LTE的 BSR 表格, 那么大吞吐量的 LTE-A业务将使得网络无法区分 UE在 150000到 1500000緩冲区状态, 从而导致资源无法有效的合理分配。 因此 3GPP通过 在 LTE的 BSR表格基础上再添加至少一张新的 BSR表格, 以满足 LTE-A 的大业务吞吐量情况下精确的反映在 150000至 1500000的緩冲区状态的要 求。 但是在 UE在支持多个 BSR表格后如何使用这些表格还没有确定。
发明内容 本发明要解决的技术问题是, 提供一种实现緩冲区状态上报的方法及系 统, 提高 LTE-A***中用户上报緩冲区状态的精确性。 为了解决上述技术问题, 本发明提供了一种实现緩冲区状态上报方法, 所述方法包括: 用户设备使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一 种上报逻辑信道的緩冲区状态; 其中, 所述新增緩冲区状态级别格式中包含多个大于原緩冲区状态级别格式中 数据量区间边界最大值的数据量区间边界值。 其中,
新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或者等于新增緩冲区状态级 别格式中数据量等级个数的整数。 所述方法还包括: 所述用户设备根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态 级别格式, 并上报此逻辑信道组的緩冲区状态报告。 其中, 所述用户设备根据逻辑信道组中緩冲区数据量选择所使用的緩冲 区状态级别格式, 并上报此逻辑信道组的緩冲区状态报告的步骤包括: 所述用户设备只上报一个逻辑信道组的緩冲区状态报告时, 判断此逻辑 信道组的緩冲区数据量小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用原緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断 此逻辑信道组的緩冲区数据量不小于原緩冲区状态级别格式中数据量区间边 界最大值时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态 报告。
其中, 所述用户设备根据逻辑信道组中緩冲区数据量选择所使用的緩冲 区状态级别格式, 并上报此逻辑信道组的緩冲区状态报告的步骤包括: 所述用户设备同时上报四个逻辑信道组的緩冲区状态报告时, 判断逻辑 信道组的緩冲区数据量中的最大值小于原緩冲区状态级别格式中数据量区间 边界最大值时, 使用原緩冲区状态级别格式上报此逻辑信道组的緩冲区状态 报告; 判断逻辑信道组的緩冲区数据量中的最大值不小于原緩冲区状态级别 格式中数据量区间边界最大值时, 使用新增緩冲区状态级别格式上报此逻辑 信道组的緩冲区状态报告。 所述方法还包括: 演进型基站确定所述用户设备应使用原緩冲区状态级别格式还是新增緩 冲区状态级别格式, 并将确定的结果通知至所述用户设备; 用户设备使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一 种上报逻辑信道的緩冲区状态的步骤包括: 所述用户设备收到后, 使用所述 演进型基站指示的緩冲区状态级别格式上报逻辑信道的緩冲区状态。 其中, 演进型基站确定所述用户设备应使用原緩冲区状态级别格式还是 新增緩冲区状态级别格式的步骤中, 演进型基站是根据所述用户设备的业务流量、 数据传输速率或者业务属 性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级别 格式。 为了解决上述技术问题, 本发明还提供了一种实现緩冲区状态上报的系 统, 所述***包括用户设备, 其中, 所述用户设备设置为: 使用原緩冲区状态级别格式或新增緩冲区状态级 别格式中的一种上报逻辑信道的緩冲区状态; 所述新增緩冲区状态级别格式 中包含多个大于原緩冲区状态级别格式中数据量区间边界最大值的数据量区 间边界值。 其中,
新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别 格式中数据量等级个数的整数。 其中, 所述用户设备还设置为: 根据逻辑信道组中緩冲区数据量选择所使用的 緩冲区状态级别格式, 并上报此逻辑信道组的緩冲区状态报告; 其中, 在只 上报一个逻辑信道组的緩冲区状态报告时, 判断此逻辑信道组的緩冲区数据 量小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用原緩冲区状 态级别格式上报此逻辑信道组的緩冲区状态报告; 判断此逻辑信道组的緩冲 区数据量不小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用新 增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 在同时上报四 个逻辑信道组的緩冲区状态报告时, 判断逻辑信道组的緩冲区数据量中的最 大值小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用原緩冲区 状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断逻辑信道组的緩冲 区数据量中的最大值不小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告。 所述***还包括演进型基站, 所述演进型基站设置为: 根据所述用户设备的业务流量、 数据传输速率 或者业务属性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲 区状态级别格式, 并将确定的结果通知至所述用户设备。 为了解决上述技术问题, 本发明还提供了一种实现緩冲区状态上报的用 户设备, 所述用户设备设置为: 使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一种上报逻 辑信道的緩冲区状态; 其中, 所述新增緩冲区状态级别格式中包含多个大于 原緩冲区状态级别格式中数据量区间边界最大值的数据量区间边界值。 其中, 新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别 格式中数据量等级个数的整数。 所述用户设备还设置为: 根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态级别格式, 并 上报此逻辑信道组的緩冲区状态报告; 其中, 在只上报一个逻辑信道组的緩 冲区状态报告时, 判断此逻辑信道组的緩冲区数据量小于原緩冲区状态级别 格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此逻辑信 道组的緩冲区状态报告; 判断此逻辑信道组的緩冲区数据量不小于原緩冲区 状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态级别格式上 报此逻辑信道组的緩冲区状态报告; 在同时上报四个逻辑信道组的緩冲区状 态报告时, 判断逻辑信道组的緩冲区数据量中的最大值小于原緩冲区状态级 别格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此逻辑 信道组的緩冲区状态报告; 判断逻辑信道组的緩冲区数据量中的最大值不小 于原緩冲区状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态 级别格式上报此逻辑信道组的緩冲区状态报告。 所述用户设备还设置为: 接收演进型基站根据所述用户设备的业务流量、 数据传输速率或者业务 属性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级 别格式后, 向所述用户设备发送的确定的结果。
本发明的方案可提高 LTE-A***中用户上报緩冲区状态的精确性。
附图概述 图 1是 LTE标准定义的 MAC PDU示意图; 图 2至图 4是 LTE标准定义的 MAC子头示意图; 图 5是 LTE标准定义的短 BSR和截短 BSR的示意图; 图 6是 LTE标准定义的长 BSR的示意图; 图 7是实施例中实现緩冲区状态上报方法示意图; 图 8是实施例中通过标识 BSR表格的标志位使 eNB区分原緩冲区状态 级别格式和新增緩冲区状态级别格式的方式示意图。 本发明的较佳实施方式
态级别格式也可称为 BSR表格 0。 此原緩冲区状态级别格式中包括 64个数 据量等级 (即等级 0至 63 ) , 每个数据量等级对应一个数据量区间, 此数据 量区间的端点的值称为数据量区间边界值,其中等级 63所对应的区间的边界 值即 150000为数据量区间边界最大值。 下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。 本发明中定义了一种或多种新增的緩冲区状态级别格式, 基站和终端可 以同时使用多个緩冲区状态级别格式。 新增緩冲区状态级别格式中包含多个大于原緩冲区状态级别格式中数据 量区间边界最大值的数据量区间边界值。 如图 7所示, 实现緩冲区状态上报 方法包括: 用户设备使用原緩冲区状态级别格式或新增緩冲区状态级别格式 中的一种上报逻辑信道的緩冲区状态。 下述实施例中以增加一种新增緩冲区状态级别格式(称为 BSR表格 1 ) 的方式描述, 增加多种新增緩冲区状态级别格式的方式与此同理, 不同新增 緩冲区状态级别格式的区别是表示的緩冲区数据状态不同。 新增緩冲区状态级别格式中也包括多个数据量等级, 数据量等级的个数 可以与原緩冲区状态级别格式中数据量等级个数相同即有 64个等级,也可以 与原緩冲区状态级别格式中数据量等级个数不相同即大于 64或小于 64个。 新增緩冲区状态级别格式中每个数据量等级也对应一个数据量区间, 不同数 据量区间中的数据量值无交集。 新增緩冲区状态级别格式的设置方式可以有多种, 例如: 原緩冲区状态 级别格式中最后一个数据量等级对应的数据量区间是指大于数据量区间边界 最大值的取值区间,新增緩冲区状态级别格式中最后 M个等级对应的数据量 区间是大于所述数据量区间边界最大值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别格式中数据量等级个数的整数。 eNB和 UE均支持载波聚合技术 , UE可以支持多个緩冲区状态级别格式 即多个 BSR表格。 BSR表格是 LTE***中已定义的 BSR表格, UE还支持 本发明新定义的 BSR表格 1。 举例如表 3所示。 最后 16个等级(即等级 48 至 63 )对应的数据量区间中的数据量值均大于原緩冲区状态级别格式中数据 量区间边界最大值 150000, 随等级值的增加其对应的数据量区间的值依次增 大,并且以较细粒度表示 150000到 1595876之间的数据。表 3所示的格式只 作示例之用, 其中等级的个数、 M的值、 各等级对应的数据量区间的容量的 大小、 以及最后等级对应的数据量区间边界最大值均可根据***需要进行更 改。 表 3
Figure imgf000014_0001
19 1552 <BS<= 1817 51 240699 < BS <= 281796
20 1817 <BS<= 2127 52 281796 <BS<= 329909
21 2127<BS<= 2490 53 329909 <BS<= 386238
22 2490 < BS <= 2915 54 386238 <BS <= 452184
23 2915 <BS<= 3413 55 452184 <BS<= 529390
24 3413 <BS<= 3995 56 529390 <BS<= 619778
25 3995 < BS <= 4677 57 619778 <BS <= 725599
26 4677 < BS <= 5476 58 725599 < BS <= 849488
27 5476 < BS <= 6411 59 849488 < BS <= 994529
28 6411 <BS <= 7505 60 994529 < BS <= 1164335
29 7505 <BS <= 8787 61 1164335 <BS <= 1363134
30 8787<BS<= 10287 62 1363134 <BS<= 1595876
31 10287 <BS<= 12043 63 BS > 1595876
本方法中, 对于选择使用哪一个緩冲区状态级别格式, 可以大致分为两 类, 即由用户侧即 UE确定和由网络侧即 eNB确定。
下面详细说明此两种实现方式。 方式一, 由 UE确定緩冲区状态级别格式的方式。 用户设备可以根据自身的算法或者预定义的规则选择所使用的緩冲区状 态级别格式。 例如用户设备根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态 级别格式, 或者根据上报 BSR的误差 (即每个 BSR级别对应的范围)来决 定选择緩冲区状态级别格式, 并上报此逻辑信道组的緩冲区数据量对应緩冲 区状态级别格式中的 BSR值, 即上报对应的状态报告。 用户设备通过显式标识或者预定义规则使得网络接收 BSR后可以在对 应的緩冲区状态级别格式即 BSR表格中查找緩冲区大小的实际值。 用户设备只上报一个逻辑信道组的緩冲区状态报告时即上报 Short BSR 或者 Truncated BSR时, 判断此逻辑信道组的緩冲区数据量小于原緩冲区状 态级别格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此 逻辑信道组的緩冲区状态报告; 判断此逻辑信道组的緩冲区数据量不小于原 緩冲区状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态级别 格式上报此逻辑信道组的緩冲区状态报告。例如此 LCG的数据量大于 150000 时, 选择 BSR表格 1 , 否则选择 BSR表格 0。 除了使用 BSR表格 0中数据量区间边界最大值外,还可以使用其它门限 值。
UE根据该 LCG的实际緩冲区大小,例如 175612 < BS <= 205595时,如 果设定 BSR表格 0的最大值为选择门限时即 150000时, LCG的数据量 BS 大于 150000, 根据上述法则, UE选择 BSR表格 1 , 实际上报的 BSR级别 为 49。 即 UE根据实际緩冲区是否满足 BSR表格的选择门限来确定。 也可 以灵活设定 BSR表格 1的最小值 107为选择门限,当 BS < 107时,选择 BSR 表格 0, 否则选择 BSR表格 1。 该门限值可以由基站通过信令通知给 UE, 可以为各个 UE指定不同的门限;或者根据协议预定义规则静态指定该门限, 可以减少对信令的^ ί'爹改。 除了上述的门限来确定 BSR表格外, 根据误差法则选择 BSR表格也可 以得到 UE选择 BSR表格 1 , 因为此时 BS可以用 BSR表格 1的等级 49表 示, 也可以使用 BSR表格 0的等级 63表示, 但是 BSR表格 1的等级 49表 示的緩冲区区间更小,表示的 LCG的数据量更精确, 使得基站估计 UE的数 据量时的误差更少, 所以 UE选择用 BSR表格 1的等级 49。 用户设备同时上报四个逻辑信道组的緩冲区状态报告时即上报 Long BSR时, 判断逻辑信道组的緩冲区数据量中的最大值小于原緩冲区状态级别 格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此逻辑信 道组的緩冲区状态报告; 判断逻辑信道组的緩冲区数据量中的最大值不小于 原緩冲区状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态级 别格式上报此逻辑信道组的緩冲区状态报告。具体的, 当一个 BSR中的不同 LCG的 BSR级别从同一个 BSR表格中获得时, 即在同一个 BSR中不存在 既有 BSR表格 0表示的 BSR级别, 又有 BSR表格 1表示的 BSR级别, 所 有的 LCG的 BSR级别都为 BSR表格 0中的 BSR级别或者都是 BSR表格 1 中的 BSR级别。 通过实际緩冲区大小最大的 LCG和选择 BSR表格的门限 进行比较来选择 BSR表格。 以表 3为例, 如果 529390 < BSLCG1 <= 619778, 146 < BSLCG2 <= 171 , BSLCG3 = 0, BSLCG4 = 0, 那么根据 BSLCG1的值, 大于 选择门限, 如门限为 150000, 那么 UE可以选择 BSR表格 1 , BSR中的各 LCG 的上报 BSR 级别分别为 BSRLCGi=56, BSRLCG2=4, BSRLCG3=0, BSRLCG3=0。 如果 5476 < BS LCG1 <= 6411 , 146 < BSLCG2 <= 171 , BSLCG3 = 0, BSLCG4 = 0, 那么 UE 可以选择 BSR表格 0 并查找 BSR 级别, 上报时 BSRLCGI=42, BSRLCG2=19, BSRLCG3=0, BSRLCG3=0。
当同一个传输时间间隔 ( Transmission Time Interval, 简称 TTI ) 出现多 个 BSR时, 如发送了一个 Regular BSR, 还可能同时携带 Padding BSR, 那 么对于相同 BSR格式的 BSR应该使用相同的 BSR表格。 但是不同的 BSR 格式之间如 Long BSR和 Short BSR或者 Truncated BSR之间选择 BSR表格 时相互独立, 即可以选择不同的 BSR表格。 由于上述表格选择过程中,基站并没有参与,也无法了解 UE选择的 BSR 表格。 所以如 UE在上报 BSR时, 当使用 BSR表格 1的时候需要携带标识 指示, 所上报 BSR中的 BSR级别是对应的 BSR表格 1 , 当不携带该标识, 则对应默认的 BSR表格 0。该标识可以通过 BSR对应的 MAC子头中的 R bit (设为 1 )或者新的 LCID (如 short BSR=01011, Truncated BSR=01100, Long BSR=01101 ) 来区分, 如图 8所示。 现有的 UE并不知道基站的版本,为了防止 UE在 LTE的基站中上报 BSR 表格 1 中的 BSR级别, 网络通过广播或者专用信令(包括 RRC信令或者 MAC CE )指示 UE基站的能力或者基站是否支持 UE上报新的 BSR表格。 在切换过程中, 目标基站的该指示信息通过切换命令或者 MAC CE发送给 UE。 当 UE收到基站的发送的指示允许 UE上报除 BSR表格 0外的 BSR表 格时, UE按上述过程进行 BSR表格选择并上报, 当 UE没有收到基站的发 送的指示允许 UE上报除 BSR表格 0外的 BSR表格时, UE只使用 BSR表 格 0进行 BSR上报。 方式二, 由 eNB确定緩冲区状态级别格式的方式。
本方式二中还可以包括以下五种实现方法。
( 1 ) eNB 根据用户设备的业务流量、 数据传输速率或者业务属性确定 用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级别格式, 并将 确定的结果通知至用户设备,用户设备收到后使用 eNB指示的緩冲区状态级 别格式上报逻辑信道的緩冲区状态。 和由 UE确定使用的表格的方式不同, 基于由 eNB确定使用的表格的方 式, eNB通过专用的 RRC信令或者 MAC CE指定 UE从收到信令起所使用 的 BSR表格。 例如 eNB通过广播或者专用信令(包括 RRC信令如在专用信 令 IE MAC-MainConfig添加可选标识标识选择 BSR表格 1 ,没有填写表示选 择 BSR表格 0 , 或者 MAC CE如添加新的 MAC CE子头, 设置 LCID为新 的值, 用以区别 MAC CE子头为 BSR表格跟换标识, 当 UE收到后即更换 BSR表格;也可以是 LCID1表示使用 BSR表格 0 , LCID2表示使用 BSR表 格 1 )通知 UE使用哪一个 BSR表格。 eNB可以使用用户的业务流量作为选择 BSR表格的依据。例如,初始状 态 UE使用 BSR表格 0确定 BSR级别并上报, eNB检测到 UE的业务流量 提高并超过预设的门限时,通过广播或者专用信令指示 UE使用 BSR表格 1 , UE收到指示后, 使用 BSR表格 1确定 BSR级别并上报, 同时基站也使用 BSR表格 1对 UE上报的 BSR进行解析; 后续过程中, eNB检测到 UE的 业务流量下降并低于预设的门限时, 通过广播或者专用信令指示 UE使用 BSR表格 0 , UE收到指示后, 使用 BSR表格 0确定 BSR级别并上报同时 基站也使用 BSR表格 0对 UE上报的 BSR进行解析。 eNB还可以使用用户的数据传输速率作为选择 BSR表格的依据。 例如, eNB判断 UE的数据传输速率大于***预设的门限时,指定 UE使用 BSR表 格 1 , 否则使用 BSR表格 0。 eNB还可以使用用户的业务属性作为选择 BSR表格的依据。 例如, eNB 判断 UE所使用的业务的级别大于***预设的级别值时, 指定 UE使用 BSR 表格 1 , 否则使用 BSR表格 0。 与上述由 UE决定所使用的表格的方法相区别的是, 本方法可以在 UE 上报 BSR时, 基站知道 UE当前使用的 BSR表格, 所以不需要新的指示表 明当前 UE使用的 BSR表格。
( 2 ) UE 向 eNB发送请求,请求使用 BSR表格 1 , eNB收到此请求后, 接受或拒绝此请求。 eNB接受此请求时, 向 UE返回同意消息, UE使用 BSR 表格 1上报 BSR。 eNB拒绝此请求时, 向 UE返回拒绝消息, UE继续使用 BSR表格 0。 eNB不返回任何消息时, 也可以认为是同意此请求。
UE 向 eNB发送请求, 请求使用 BSR表格 0, eNB收到此请求后, 接 受或拒绝此请求。 eNB接受此请求时,向 UE返回同意消息, UE使用 BSR表 格 0上报 BSR。 eNB拒绝此请求时,向 UE返回拒绝消息, UE继续使用 BSR 表格 1。 eNB不返回任何消息时, 也可以认为是同意此请求。
( 3 ) UE判断需更改 BSR表格时, 向 eNB发送请求更改 BSR表格的消 息, eNB指示 UE更改所使用的 BSR表格。 例如 UE判断业务流量增加并且超过特定门限时, 上报测量报告要求使 用 BSR表格 1 , eNB收到后指示 UE使用 BSR表格 1 ; UE判断业务流量减 少并且低于特定门限时, 上报测量报告要求使用 BSR表格 0, eNB收到后指 示 UE使用 BSR表格 0。
( 4 )UE使用 BSR表格中数据量区间边界最大值或数据量区间边界非零 最小值时, 向 eNB上报此最大值或非零最小值, eNB根据此最大值或非零最 小值判断 UE需更改 BSR表格时, 向 UE指示此 UE应使用的 BSR表格。 eNB收到 UE上报的数据量区间边界最大值或数据量区间边界非零最小 值时, 推断此当前的 BSR表格的表示緩冲区大小范围可能受限, 需要更换 BSR表格。 例如, 当 UE使用 BSR表格 0时, UE上报 BSR的值为 63时, 表示当 前的緩冲区 BS > 150000, eNB判断 UE使用 BSR表格 1可以更精确的表示 UE的 LCG緩冲区数据量的值, 指示 UE使用 BSR表格 1。
( 5 ) UE定时上报其使用的 BSR表格中的等级值并上报至 eNB, eNB 判断 UE需更改 BSR表格时, 向 UE指示此 UE应使用的 BSR表格。 例如, UE使用 BSR表格 0, eNB连续多次收到 UE上报的其使用的 BSR 表格中的等级值均位于 60~63区间之内时, eNB判断 UE当前的緩冲区占用 率较高, 很可能进一步提高, eNB指示 UE使用 BSR表格 1。 再例如, BSR表格 1使用表 3的情况下, UE使用 BSR表格 1 , eNB连 续多次收到 UE上报的其使用的 BSR表格中的等级值均位于 0~3 区间之内 时, eNB判断 UE当前的緩冲区占用率较低, 很可能进一步降低, eNB指示 UE使用 BSR表格 0。 eNB 连续收到多个满足触发 BSR表格更换的 BSR等级值后, 再指示 UE进行 BSR表格更换, 可以确保判决的正确性, 减少緩冲区占用率在短时 间内大范围变化时频繁更换 BSR表格, 减少信令交互及资源浪费。
本实施例还提供了一种实现緩冲区状态上报的用户设备, 所述用户设备 设置为: 使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一种上报逻 辑信道的緩冲区状态; 其中, 所述新增緩冲区状态级别格式中包含多个大于 原緩冲区状态级别格式中数据量区间边界最大值的数据量区间边界值。 其中,
新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别 格式中数据量等级个数的整数。 所述用户设备还设置为: 根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态级别格式, 并 上报此逻辑信道组的緩冲区状态报告。 其中, 所述用户设备是设置为按如下方式根据逻辑信道组中緩冲区数据 量选择所使用的緩冲区状态级别格式, 并上报此逻辑信道组的緩冲区状态报 告:
在只上报一个逻辑信道组的緩冲区状态报告时, 判断此逻辑信道组的緩 冲区数据量小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用原 緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断此逻辑信道 组的緩冲区数据量不小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 在同时上报四个逻辑信道组的緩冲区状态报告时, 判断逻辑信道组的緩 冲区数据量中的最大值小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用原緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断 逻辑信道组的緩冲区数据量中的最大值不小于原緩冲区状态级别格式中数据 量区间边界最大值时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩 冲区状态报告。 所述用户设备还设置为: 接收演进型基站根据所述用户设备的业务流量、 数据传输速率或者业务 属性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级 别格式后, 向所述用户设备发送的确定的结果。
以上所述仅为本发明的优选实施例而已, 并非用于限定本发明的保护范 围。 根据本发明的发明内容, 还可有其他多种实施例, 在不背离本发明精神 改变和变形, 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。 本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性 本发明可提高 LTE-A***中用户上报緩冲区状态的精确性。

Claims

权 利 要 求 书
1、 一种实现緩冲区状态上报方法, 所述方法包括: 用户设备使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一 种上报逻辑信道的緩冲区状态; 其中, 所述新增緩冲区状态级别格式中包含多个大于原緩冲区状态级别格式中 数据量区间边界最大值的数据量区间边界值。
2、 如权利要求 1所述的方法, 其中, 新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或者等于新增緩冲区状态级 别格式中数据量等级个数的整数。
3、 如权利要求 1或 2所述的方法, 所述方法还包括: 所述用户设备根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态 级别格式, 并上报此逻辑信道组的緩冲区状态报告。
4、如权利要求 3所述的方法, 其中, 所述用户设备根据逻辑信道组中緩 冲区数据量选择所使用的緩冲区状态级别格式, 并上报此逻辑信道组的緩冲 区状态报告的步骤包括: 所述用户设备只上报一个逻辑信道组的緩冲区状态报告时, 判断此逻辑 信道组的緩冲区数据量小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用原緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断 此逻辑信道组的緩冲区数据量不小于原緩冲区状态级别格式中数据量区间边 界最大值时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态 报告。
5、如权利要求 3所述的方法, 其中, 所述用户设备根据逻辑信道组中緩 冲区数据量选择所使用的緩冲区状态级别格式, 并上报此逻辑信道组的緩冲 区状态报告的步骤包括: 所述用户设备同时上报四个逻辑信道组的緩冲区状态报告时, 判断逻辑 信道组的緩冲区数据量中的最大值小于原緩冲区状态级别格式中数据量区间 边界最大值时, 使用原緩冲区状态级别格式上报此逻辑信道组的緩冲区状态 报告; 判断逻辑信道组的緩冲区数据量中的最大值不小于原緩冲区状态级别 格式中数据量区间边界最大值时, 使用新增緩冲区状态级别格式上报此逻辑 信道组的緩冲区状态报告。
6、 如权利要求 1或 2所述的方法, 所述方法还包括: 演进型基站确定所述用户设备应使用原緩冲区状态级别格式还是新增緩 冲区状态级别格式, 并将确定的结果通知至所述用户设备; 用户设备使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一 种上报逻辑信道的緩冲区状态的步骤包括: 所述用户设备收到后, 使用所述 演进型基站指示的緩冲区状态级别格式上报逻辑信道的緩冲区状态。
7. 如权利要求 6中所述的方法, 其中, 演进型基站确定所述用户设备应 使用原緩冲区状态级别格式还是新增緩冲区状态级别格式的步骤中, 演进型基站是根据所述用户设备的业务流量、 数据传输速率或者业务属 性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级别 格式。
8、 一种实现緩冲区状态上报的***, 所述***包括用户设备, 其中, 所述用户设备设置为: 使用原緩冲区状态级别格式或新增緩冲区状态级 别格式中的一种上报逻辑信道的緩冲区状态; 所述新增緩冲区状态级别格式 中包含多个大于原緩冲区状态级别格式中数据量区间边界最大值的数据量区 间边界值。
9、 如权利要求 8所述的***, 其中, 新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别 格式中数据量等级个数的整数。
10、 如权利要求 8所述的***, 其中, 所述用户设备还设置为: 根据逻辑信道组中緩冲区数据量选择所使用的 緩冲区状态级别格式, 并上报此逻辑信道组的緩冲区状态报告; 其中, 在只 上报一个逻辑信道组的緩冲区状态报告时, 判断此逻辑信道组的緩冲区数据 量小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用原緩冲区状 态级别格式上报此逻辑信道组的緩冲区状态报告; 判断此逻辑信道组的緩冲 区数据量不小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用新 增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告; 在同时上报四 个逻辑信道组的緩冲区状态报告时, 判断逻辑信道组的緩冲区数据量中的最 大值小于原緩冲区状态级别格式中数据量区间边界最大值时, 使用原緩冲区 状态级别格式上报此逻辑信道组的緩冲区状态报告; 判断逻辑信道组的緩冲 区数据量中的最大值不小于原緩冲区状态级别格式中数据量区间边界最大值 时, 使用新增緩冲区状态级别格式上报此逻辑信道组的緩冲区状态报告。
11、 如权利要求 8所述的***, 所述***还包括演进型基站, 所述演进型基站设置为: 根据所述用户设备的业务流量、 数据传输速率 或者业务属性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲 区状态级别格式, 并将确定的结果通知至所述用户设备。
12、 一种实现緩冲区状态上报的用户设备, 所述用户设备设置为: 使用原緩冲区状态级别格式或新增緩冲区状态级别格式中的一种上报逻 辑信道的緩冲区状态; 其中, 所述新增緩冲区状态级别格式中包含多个大于 原緩冲区状态级别格式中数据量区间边界最大值的数据量区间边界值。
13、 如权利要求 12所述的用户设备, 其中, 新增緩冲区状态级别格式中包括多个数据量等级, 每个数据量等级对应 一个数据量区间; 原緩冲区状态级别格式中最后一个数据量等级对应的数据 量区间是指大于数据量区间边界最大值的取值区间, 所述新增緩冲区状态级 别格式中最后 M个等级对应的数据量区间是大于所述数据量区间边界最大 值的并且取值依次增大的数据量区间; M是小于或等于新增緩冲区状态级别 格式中数据量等级个数的整数。
14、 如权利要求 12所述的用户设备, 所述用户设备还设置为: 根据逻辑信道组中緩冲区数据量选择所使用的緩冲区状态级别格式, 并 上报此逻辑信道组的緩冲区状态报告; 其中, 在只上报一个逻辑信道组的緩 冲区状态报告时, 判断此逻辑信道组的緩冲区数据量小于原緩冲区状态级别 格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此逻辑信 道组的緩冲区状态报告; 判断此逻辑信道组的緩冲区数据量不小于原緩冲区 状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态级别格式上 报此逻辑信道组的緩冲区状态报告; 在同时上报四个逻辑信道组的緩冲区状 态报告时, 判断逻辑信道组的緩冲区数据量中的最大值小于原緩冲区状态级 别格式中数据量区间边界最大值时, 使用原緩冲区状态级别格式上报此逻辑 信道组的緩冲区状态报告; 判断逻辑信道组的緩冲区数据量中的最大值不小 于原緩冲区状态级别格式中数据量区间边界最大值时, 使用新增緩冲区状态 级别格式上报此逻辑信道组的緩冲区状态报告。
15、 如权利要求 12所述的用户设备, 所述用户设备还设置为: 接收演进型基站根据所述用户设备的业务流量、 数据传输速率或者业务 属性确定所述用户设备应使用原緩冲区状态级别格式还是新增緩冲区状态级 别格式后, 向所述用户设备发送的确定的结果。
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