WO2018171380A1 - 一种缓冲区状态报告的触发方法、装置、终端、存储介质 - Google Patents

一种缓冲区状态报告的触发方法、装置、终端、存储介质 Download PDF

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Publication number
WO2018171380A1
WO2018171380A1 PCT/CN2018/077122 CN2018077122W WO2018171380A1 WO 2018171380 A1 WO2018171380 A1 WO 2018171380A1 CN 2018077122 W CN2018077122 W CN 2018077122W WO 2018171380 A1 WO2018171380 A1 WO 2018171380A1
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Prior art keywords
terminal
drb
bsr
data
mapping relationship
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PCT/CN2018/077122
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English (en)
French (fr)
Inventor
陈中明
黄河
施小娟
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to the field of communications engineering, and in particular, to a method, an apparatus, a terminal, and a storage medium for triggering a buffer status report.
  • LTE Long Term Evolution
  • LC logical channel
  • LCG logical channel group
  • BSR buffer status report
  • the base station After receiving the received data, the base station obtains the corresponding uplink grant according to the received index value, and the terminal can send the uplink data after receiving the uplink grant.
  • the BS includes buffer data of a corresponding DRB on the LCG in a Radio Link Control (RLC) layer, and buffer data of a Packet Data Convergence Protocol (PDCP) layer.
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • the uplink data arrives at a data with a higher priority than the currently prepared data, or there is currently no prepared data.
  • the uplink resource allocation is received and the padding byte is equal to or greater than the BSR (including the header).
  • the BSR cycle timer expires, the retransmission BSR timer expires, and the data is currently ready.
  • the BSR is triggered.
  • the terminal After the terminal has the uplink authorization, the terminal sends the BSR to the base station.
  • 5G will conduct further technical research on greater throughput, more user connections, lower latency, higher reliability, lower power consumption, including network-side devices and user terminals.
  • 5G technology goals to achieve 1000 times mobile data traffic growth per region by 2020, 10 to 100 times throughput per user equipment (User Equipment, UE), 10 to 100 times the number of connected devices
  • the growth of low-power devices has 10 times longer battery life and a 5x end-to-end delay.
  • 5G will adopt a unified technology architecture to support enhanced mobile broadband (eMBB) services, massive machine type communication (mMTC) services and high reliability and low latency (Ultra). Reliable and Low Latency) business.
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • Ultra high reliability and low latency
  • QoS Quality of Service
  • FIG. 1 is a schematic structural diagram of performing QoS processing on the bearer granularity for data transmission in LTE.
  • FIG. 1 illustrates only a case where a PDN connection is established between a User Equipment (UE) and a Packet Data Network (PDN).
  • UE User Equipment
  • PDN Packet Data Network
  • the core network may A plurality of Evolved Packet System bearers (EPS bearers) are set up between the UE and the PDN gateway (P-GW), and each EPS bearer carries one or more service traffic flows.
  • SDF Evolved Packet System bearers
  • the EPS bearer is an end-to-end logical bearer between the UE and the P-GW.
  • the EPS bearer establishes three segments of bearers on the three network interfaces that pass through the LTE network architecture, including establishing the P-GW and the serving gateway.
  • DRB data radio bearer
  • S1-bearer and DRB are together defined as an evolved Universal Terrestrial Radio Access Bearer (E-RAB) between the UE and the S-GW.
  • E-RAB evolved Universal Terrestrial Radio Access Bearer
  • the establishment of the EPS bearer and the mapping relationship between the SDF and the EPS bearer are completely determined and controlled by the core network.
  • the eNB will notify the eNB of each E-RAB (ie, a bearer of the EPS bearer on the E-URTAN side).
  • QoS parameters the eNB can only passively accept or reject. If accepted, the DRB between the UE and the UE is established on the air interface, and the data scheduling transmission is performed according to the received QoS parameters of the E-RAB level.
  • a terminal can remain connected to more than two network nodes at the same time, but the control plane connection is only connected to one of the cells, such as a macro cell.
  • the UE is in the cell 1 and the cell at the same time.
  • the cell 1 home eNB1 is a macro base station
  • the cell 2 home eNB 2 is a small cell base station.
  • the UE maintains a connection with the cell 1 as a control plane link, and may also include a user plane link.
  • the UE maintains a connection with the cell 2, such as a user plane link, that is, the UE establishes a radio bearer with both the cell 1 and the cell 2.
  • the split data radio bearer In the dual connectivity, in order to better perform load balancing between the base stations and optimize the cell resources to the greatest extent, the split data radio bearer is introduced. Therefore, in the dual connectivity, there are split data radio bearers and non-segmented data radio bearers, non-data partitioning.
  • a radio bearer may exist only in a primary eNB (MeNB) or a secondary eNB (SeNB).
  • MeNB bearers Only the data radio bearers existing on the MeNB are referred to as MeNB bearers, and only exist.
  • the data radio bearer on the SeNB is referred to as the SeNB bearer, and the data radio bearers existing on the MeNB and the SeNB are referred to as split bearers (split bearers).
  • the uplink data is transmitted by the MeNB and the SeNB, that is, how to allocate the transmission ratio of the MeNB and the SeNB, which is called a traffic distribution ratio, for example, 30% of the data to be transmitted by the MeNB is required to be transmitted, and the SeNB needs to transmit the data radio bearer. Send 70% of the data.
  • the QoS policy and parameters, and the mapping relationship between the SDF and the bearer are completely controlled by the core network, and the base station can only passively accept or refuse to establish the DRB.
  • the wireless interface is the key to truly implement and satisfy the QoS.
  • the base station cannot adjust the SDF mapped on each DRB according to the actual wireless load and the quality of the wireless link, so it is not the most efficient. Perform QoS.
  • the core network and the access network are too coupled, and the modification of the core network will directly affect the access network and need to make corresponding modifications, and the independent expansion or evolution of the core network and the access network cannot be realized.
  • 3GPP proposes a flow-based QoS architecture in 5G system design.
  • the bearer is removed between the core network and the radio access network, but the DRB is retained on the air interface.
  • the above stream-based QoS architecture proposed by 3GPP there is no effective solution for the transmission of buffer status reports, especially the triggering of buffer status reports.
  • the main purpose of the embodiments of the present invention is to provide a method, a device, a terminal, and a storage medium for triggering a buffer status report, and aim to solve the trigger problem of a buffer status report in a flow-based QoS architecture of a 5G system.
  • An embodiment of the present invention provides a method for triggering a buffer status report, including: the terminal detects that a mapping relationship between a data radio bearer DRB and a QoS flow changes; and the terminal triggers a buffer status report BSR.
  • the embodiment of the present invention further provides another method for triggering a buffer status report.
  • the terminal detects that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes; the terminal triggers a BSR.
  • the embodiment of the present invention further provides a triggering device for triggering a buffer status report, including: a first detecting module configured to detect that a mapping relationship between a DRB and a QoS flow is changed; and a first triggering module configured to trigger a BSR.
  • the embodiment of the invention further provides a trigger device for buffer status report, including:
  • the second detecting module is configured to detect that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes; the second triggering module is configured to trigger the BSR.
  • An embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores a program, when the program is read and executed by the processor, performing the following operations: detecting a data radio bearer DRB and a service The mapping of the mass flow changes; the buffer status is reported to report the BSR.
  • the terminal detects that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes; the terminal triggers a BSR.
  • FIG. 1 is a schematic structural diagram of data transmission performed by performing QoS processing at a bearer granularity in LTE;
  • FIG. 2 is a schematic diagram of a flow-based QoS architecture
  • FIG. 3 is a flowchart of a method for triggering a buffer status report according to Embodiment 1 of the present invention
  • FIG. 5 is a structural block diagram of a triggering device for a buffer status report according to Embodiment 9 of the present invention.
  • FIG. 6 is a structural block diagram of a triggering device for a buffer status report according to Embodiment 10 of the present invention.
  • Embodiments of the present application may be in a 5G system, but are not limited to the system. Further, the embodiment of the present application is applied to a flow-based QoS architecture, and the architecture may include a RAN side device (such as a 5G base station, an eLTE base station, etc.) and a terminal.
  • a triggering method for a buffer status report that can be run on the foregoing architecture is provided. It should be noted that the operating environment of the triggering method for the buffer status report provided in the embodiment of the present application is not Limited to the above architecture.
  • FIG. 2 is a schematic diagram of a flow-based QoS architecture
  • the 5G core network receives a packet data network (for example, the Internet).
  • SDF for example, IP Flow
  • SDF maps SDF into QoS Flow.
  • multiple SDFs with the same or similar QoS requirements can be aggregated into one QoS Flow.
  • the 5G core network generates a QoS rule according to the QoS policy of the core network, the QoS requirement of the SDF, the subscription information of the user, and completes the mapping of the SDF to the QoS Flow.
  • the 5G core network sends the QoS characteristic parameters in the QoS rule generated by the decision to the RAN through a control plane interface with the radio access network (RAN) (for example, a 5G base station, an eLTE base station, etc.), and the 5G core network passes the RAN
  • RAN radio access network
  • the inter-user plane interface sends the QoS Flow to the RAN, and the QoS identifier (QoS ID) of the QoS characteristic parameter used by the packet is included in the header of each packet containing the QoS flow sent to the RAN.
  • the RAN maps the data packet to the DRB of the air interface according to the QoS characteristic parameter received from the core network, and maps the data packet to the DRB of the air interface to complete the mapping between the QoS Flow and the DRB.
  • the RAN side can fully consider the actual wireless load, radio link quality and other factors, decide to establish a DRB and decide the mapping relationship between QoS Flow and DRB.
  • FIG. 3 is a flowchart of a method for triggering a buffer status report according to Embodiment 1 of the present invention. As shown in FIG. 3, the method for triggering a buffer status report includes:
  • Step S101 The terminal detects that the mapping relationship between the data radio bearer DRB and the QoS flow QoS flow changes.
  • Step S102 The terminal triggers the buffer status report BSR.
  • the terminal determines whether the BSR is triggered by detecting whether the mapping relationship between the DRB and the QoS flow changes.
  • the triggering method of the BSR enables the base station to timely know the terminal to be sent on the flow-based QoS architecture.
  • the BSR that is, the detailed information of the data to be sent by the terminal, so that resources can be allocated more efficiently to meet different QoS requirements of different services.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes.
  • the terminal determines whether the mapping relationship between the DRB and the QoS flow changes.
  • the terminal determines that the mapping relationship between the DRB and the QoS flow changes.
  • the BSR triggered by the terminal may include, for example, the buffered data size BS information of the logical channel group LCG carried by the DRB before the mapping between the DRB and the QoS flow changes; and the mapping relationship between the DRB and the QoS flow changes.
  • the BS information may include, for example, an index value corresponding to the BS.
  • the BSR triggered by the terminal may further include: data of the PDCP layer in the packet data convergence, data of the radio link control RLC layer, and data that the media intervention control MAC layer has not scheduled in the LCG carried by the DRB.
  • the mapping between the DRB and the QoS flow is detected by the terminal.
  • the terminal can be classified into the following two methods:
  • a possible implementation manner is: the terminal receives the radio resource control RRC initial configuration command sent by the base station; and the terminal configures the mapping relationship between the DRB and the QoS flow according to the RRC initial configuration command.
  • the terminal receives the RRC modification configuration command sent by the base station; the terminal modifies the mapping relationship between the DRB and the QoS flow according to the RRC modification configuration command.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes.
  • a possible implementation manner is: the terminal parses the quality of service flow identifier included in the downlink data packet of the BRD at a first moment, and generates a first mapping relationship between the DRB and the quality of service stream; When the first mapping relationship is different from the initial mapping relationship between the DRB and the QoS flow, the terminal detects that the mapping relationship between the DRB and the QoS flow changes.
  • the initial mapping relationship may include: the terminal parsing the quality of service flow identifier included in the downlink data packet of the DRB at a second time, and generating an initial mapping relationship; the second moment includes: The terminal monitors the moment when the downlink data packet of the DRB includes the quality of service flow identifier.
  • the initial mapping relationship includes: an initial mapping relationship obtained by the terminal by using a radio resource control RRC initial configuration command.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes.
  • the terminal triggers the BSR, where the triggering of the BSR means that the terminal is ready to send the BSR to the base station, and once the sending condition is met, the BSR is immediately sent to the base station.
  • the terminal determines whether the mapping relationship between the DRB and the QoS flow changes.
  • the terminal triggers the BSR.
  • the preconditions for triggering the BSR can be increased.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes, it is also required to determine whether the logical channel group LCG of the QoS flow changes; when the LCG of the QoS flow changes, the terminal triggers the BSR.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow is changed, it is also required to determine whether the BS of the LCG carried by the DRB changes; when the index value corresponding to the BS changes, the terminal triggers the Said BSR. It should be noted that the BS changes, and the index corresponding to the BS changes.
  • the terminal After the terminal detects that the mapping relationship between the DRB and the QoS flow changes, the terminal determines the index value corresponding to the BS of the LCG, and the DRB and the quality of service before the terminal determines that the mapping relationship between the DRB and the QoS flow changes. Whether the index value corresponding to the BS of the LCG is at least 0, and the index value corresponding to the BS of the LCG and the index corresponding to the BS of the LCG after the change are at least When one is not 0, the terminal triggers the BSR.
  • the terminal After the terminal detects that the mapping between the DRB and the QoS flow is changed, it is also required to determine whether the condition of at least one of the following conditions is met: the mapping of the DRB and the QoS flow changes before the BS of the LCG carried by the DRB The index value corresponding to the BS is higher than the threshold 2 after the mapping value of the index is lower than the threshold 1, and the mapping between the DRB and the QoS flow is changed; when the condition of at least one of the foregoing is met, the terminal triggers the BSR.
  • the terminal After the terminal detects that the mapping relationship between the DRB and the QoS flow has changed, it is also required to determine whether the DRB has a data packet arrival; when the DRB has a data packet, the terminal triggers the BSR.
  • the terminal After the terminal detects that the mapping relationship between the DRB and the QoS flow is changed, it is also required to determine whether the terminal receives the indication of triggering the BSR sent by the base station; when the terminal receives the sending by the base station When the indication of the BSR is triggered, the terminal triggers the BSR; wherein the indication of triggering the BSR is configured by using RRC.
  • Adding a seventh after the terminal detects that the mapping relationship between the DRB and the QoS flow is changed, it is also required to determine whether the terminal receives the indication of triggering the BSR sent by the base station; when the terminal receives the sending by the base station When the indication of the BSR is triggered, the terminal triggers the BSR; wherein the indication of triggering the BSR is configured by using RRC.
  • the terminal may trigger the BSR when the terminal detects that the DRB is a split radio bearer and the split data ratio of the split radio bearer changes.
  • the BSR is reported to the base station, including the PDCP prepared data in the LCG, and the RLC prepared data, MAC. Data not yet scheduled. At this time, if the terminal detects that the MAC has new data waiting for scheduling, the terminal triggers the BSR.
  • the method further includes: after the terminal receives the uplink resource, the terminal sends the BSR to the base station, where The base station configures an uplink grant for the terminal according to the BSR (the BSR carries the buffered data information that is prepared on the LCG, that is, the index value corresponding to the buffered data size); after receiving the uplink grant, the terminal sends the uplink data to the terminal. Said base station.
  • the terminal determines whether the BSR is triggered by detecting whether the mapping relationship between the DRB and the QoS flow changes, so that the base station is timely on the flow-based QoS architecture. It is known that the terminal has prepared the BSR to be sent (that is, the detailed information of the data to be sent by the terminal), so that resources can be allocated more efficiently to meet different QoS requirements of different services.
  • This embodiment is a specific implementation manner of the method for triggering the buffer status report on the basis of the first embodiment.
  • the terminal establishes a connection with the cell 1 and is configured with two data radio bearers (DRBs), which are respectively data radio bearers 1 (DRB1). And the data radio bearer 2 (DRB2), and inform the terminal to obtain the mapping relationship between the DRB and the QoS flow by the reflection method.
  • DRBs data radio bearers 1
  • DRB2 data radio bearer 2
  • Step 1 At the second moment, the terminal detects the downlink data packet of the DRB1, parses the data packet containing the QoS flow ID to 1, and generates a mapping relationship between the DRB and the QoS flow, and the terminal detects the downlink data packet of the DRB2, and parses out the data packet.
  • the QoS flow ID is 2, and the mapping relationship between the DRB and the QoS flow (initial mapping relationship) is generated, as shown in the following table:
  • Step 2 At the first moment, the terminal detects that the downlink data packet of the DRB2 includes the QoS flow ID of 1, and the downlink data packet of the DRB2 further includes the QoS flow ID of 2, and re-generates the mapping relationship between the DRB and the QoS flow. (first mapping relationship), as shown in the following table:
  • Mapped QoS flow Wireless bearer Attributive LC affiliated LCG NULL Data radio bearer 1 3 0 2 Data radio bearer 2 4 1 1 Data radio bearer 2 4 1
  • the terminal detects that the mapping relationship between the QoS flow ID1 and the DRB changes (that is, the mapping relationship between the DRB and the QoS flow changes), and triggers the BSR.
  • Step 3 After receiving the uplink resource, the terminal reports the BSR to the base station, carries the LCG0 before the change (the logical channel group with the packet 0), and the index value corresponding to the buffered data size (BS) of the LCG0, and the LCG1 (the logical group 1) Channel group), and the index value corresponding to the BS of LCG1.
  • the terminal reports the BSR to the base station, carries the LCG0 before the change (the logical channel group with the packet 0), and the index value corresponding to the buffered data size (BS) of the LCG0, and the LCG1 (the logical group 1) Channel group), and the index value corresponding to the BS of LCG1.
  • BS buffered data size
  • the LCG0 does not have a mapped QoS flow ID, or the LCG0 has no buffer data, and the BSR of the LCG0 does not need to be reported after the change.
  • Step 4 The base station receives the BSR reported by the terminal, and configures the uplink authorization according to the buffered data size.
  • Step 5 The terminal receives the uplink grant and sends uplink data to the base station.
  • step 2 actually needs to further meet the higher requirements of triggering the BSR, for example:
  • the terminal detects that the mapping relationship between the QoS flow ID1 and the DRB changes, and the LCG0 corresponding to the DRB1 mapped by the QoS flow ID1 before the change, the corresponding BS is not 0;
  • the BSR is triggered;
  • the LCG0 corresponding to the DRB1 mapped by the QoS flow ID1 before the change, the corresponding BS1, and the LCG1 corresponding to the DRB2 mapped by the changed QoS flow ID1, and the corresponding BS2, BS1 and BS2, trigger the BSR, the different Yes, the index value corresponding to the BS is different;
  • the LCG0 corresponding to the DRB1 mapped by the QoS flow ID1 before the change, the corresponding BS1, is lower than the specified threshold 1, and the LCG1 corresponding to the DRB2 mapped after the change, and the corresponding BS2, above the specified threshold 2, triggers the BSR;
  • the LCG0 corresponding to the DRB1 mapped by the QoS flow ID1 before the change, and the corresponding BS1, below the specified threshold 1, triggers the BSR;
  • the LCG1 corresponding to the changed DRB2 and the corresponding BS2 are higher than the specified threshold 2, and the BSR is triggered.
  • This embodiment is a specific implementation manner of the method for triggering the buffer status report on the basis of the first embodiment.
  • the terminal establishes a connection with the cell 2, and is configured with two data radio bearers (DRBs), which are respectively data radio bearers 1 (DRB1). And the data radio bearer 2 (DRB2), and inform the terminal to obtain the mapping relationship between the data radio bearer and the QoS flow by the reflection method.
  • DRBs data radio bearers
  • DRB2 data radio bearer 2
  • Step 1 At the second moment, the terminal detects the downlink data packet of the DRB1, and parses the data packet with the QoS flow ID of 1, including the QoS flow ID of 2, and generates a mapping relationship between the DRB and the QoS flow, and the terminal detects the downlink of the DRB2.
  • the data packet is parsed into a data packet containing a QoS flow ID of 3, and a mapping relationship between the DRB and the QoS flow (initial mapping relationship) is generated, as shown in the following table:
  • Step 2 At the first moment, the terminal detects that the downlink data packet of the DRB1 includes the QoS flow ID of 1, and the downlink data packet of the DRB2 includes the QoS flow ID of 2, and also includes the QoS flow ID of 3, and regenerates the DRB.
  • the mapping relationship with the QoS flow (first mapping relationship) is as follows:
  • the terminal detects that the mapping relationship between the QoS flow ID2 and the DRB changes (that is, the mapping relationship between the DRB and the QoS flow changes), and triggers the BSR.
  • Step 3 After receiving the uplink resource, the terminal reports the BSR to the base station, carries the LCG0 before the change, and the index value corresponding to the buffered data size of the LCG0, and carries the changed LCG1 and the index value corresponding to the buffered data size of the LCG1.
  • Step 4 The base station receives the BSR reported by the terminal, and configures the uplink authorization according to the buffered data size.
  • Step 5 The terminal receives the uplink grant and sends uplink data to the base station.
  • step 2 actually needs to further meet the higher requirements for triggering the BSR, for example:
  • the terminal After the terminal detects that the mapping relationship between the QoS flow ID2 and the DRB is changed, the LCG1 corresponding to the DRB2 mapped by the QoS flow ID2 is different from the LCG0 corresponding to the DRB1 mapped by the QoS flow ID2 before the change, and thus the BSR is triggered.
  • the DRB2 mapped by the changed QoS flow ID2 detects that new data arrives and triggers the BSR.
  • This embodiment is a specific implementation manner of the method for triggering the buffer status report on the basis of the first embodiment.
  • the terminal establishes a connection with the cell 3, and is configured with two data radio bearers (BRDs), which are respectively data radio bearers 1 (BRD1). And the data radio bearer 2 (BRD2), and inform the terminal to obtain the mapping relationship between the data radio bearer and the QoS flow through the explicit configuration method, as shown in the following table:
  • Mapped QoS flow Wireless bearer Attributive LC affiliated LCG 1 Data radio bearer 1 3 0 2 Data radio bearer 2 4 0
  • Step 1 At time T1, the terminal receives the RRC configuration command from the base station, and modifies the QoS flow ID to 1 to map to DRB2, as shown in the following table:
  • Mapped QoS flow Wireless bearer Attributive LC affiliated LCG NULL Data radio bearer 1 3 0 2 Data radio bearer 2 4 0 1 Data radio bearer 2 4 0
  • the terminal detects that the mapping relationship between the QoS flow ID1 and the DRB changes (that is, the mapping relationship between the DRB and the QoS flow changes), and triggers the BSR.
  • Step 2 After receiving the uplink resource, the terminal reports the BSR to the base station, and carries the index value corresponding to the buffer data size of the pre-change LCG0 and the LCG0. It is also LCG0 after the change, so no special treatment is required.
  • Step 3 The base station receives the BSR reported by the terminal, and configures the uplink authorization according to the buffered data size.
  • Step 4 The terminal receives the uplink grant and sends uplink data to the base station.
  • step 2 actually further satisfies the higher requirements for triggering the BSR, for example:
  • the terminal After the terminal detects that the mapping relationship between the QoS flow ID1 and the DRB is changed, the LCG0 corresponding to the DRB2 mapped by the QoS flow ID1 is the same as the LCG0 corresponding to the DRB1 mapped by the QoS flow ID1 before the change. Therefore, the BSR may not be triggered. It should be noted that although the BSR may not be triggered at this step, the terminal will continue to monitor whether the mapping relationship between the QoS flow and the DRB has a new change. When there is a new change, continue to use the method of the present application to determine whether the terminal is Trigger the BSR.
  • the terminal receives the RRC configuration command of the base station, and after modifying the QoS flow ID1 to be mapped to the DRB2, if the base station carries the indication of triggering the BSR in the command, the BSR is triggered, and if the indication is not carried, the BSR is not triggered. It should be noted that although the BSR may not be triggered at this step, the terminal will continue to monitor whether the mapping relationship between the QoS flow and the DRB has a new change. When there is a new change, continue to use the method of the present application to determine whether the terminal is Trigger the BSR.
  • This embodiment is a specific implementation manner of a method for triggering a buffer status report based on the first embodiment.
  • the terminal establishes a connection with the cell 4, and is configured with two data radio bearers (BRDs), respectively, which are data radio bearers 1 (BRD1). And the data radio bearer 2 (BRD2), and inform the terminal to obtain the mapping relationship between the data radio bearer and the QoS flow through the explicit configuration method, as shown in the following table:
  • Step 1 At time T1, the terminal receives the RRC configuration command from the base station, and modifies the QoS flow ID to 2 to map to DRB2, as shown in the following table.
  • the terminal detects that the mapping relationship between the QoS flow ID2 and the DRB changes (that is, the mapping relationship between the DRB and the QoS flow changes), and triggers the BSR.
  • Step 2 After receiving the uplink resource, the terminal reports the BSR to the base station, and carries the index value corresponding to the buffer data size of the pre-change LCG0 and the LCG0. Carrying the index value corresponding to the buffered data size of LCG1 and LCG1.
  • Step 3 The base station receives the BSR reported by the terminal, and configures the uplink authorization according to the buffered data size.
  • Step 4 The terminal receives the uplink grant and sends uplink data to the base station.
  • the terminal when the terminal reports the BSR, it carries the buffered data size (BS) in the LCG of the terminal side, and the BS includes the data prepared by the PDCP layer of the packet data convergence, and the data prepared by the RLC layer of the radio link control, and may also include the media.
  • Access control MAC Media Access Control, MAC
  • the MAC ready data refers to the MAC has not scheduled data.
  • Step 1 After receiving the uplink resource, the terminal reports the BSR to the base station, including the PDCP layer prepared data of the corresponding DRB in the LCG, the data prepared by the RLC layer, and the data that has not been scheduled by the MAC layer.
  • Step 2 The MAC layer detects that there is new data waiting for scheduling, triggering the BSR.
  • the method for triggering a buffer status report includes:
  • Step S201 The terminal detects that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes.
  • Step S202 The terminal triggers the buffer status report BSR.
  • the terminal determines whether the DRB is a split data radio bearer, and whether the split data ratio of the split radio bearer changes, and determines whether the BSR is triggered.
  • the BSR that is, the detailed information of the data to be sent by the terminal
  • the terminal is known in time, so that resources can be allocated more efficiently to meet different QoS requirements of different services.
  • the BSR triggered by the terminal includes at least the BS information of the LCG to which the DRB belongs on the primary base station MeNB, and the BS information of the LCG to which the DRB belongs on the secondary base station SeNB.
  • the method further includes: after the terminal receives the uplink resource, the terminal sends the BSR to the base station, where The base station configures an uplink grant for the terminal according to the BSR (the BSR carries the buffered data information that is prepared, that is, the index value corresponding to the buffered data size); after receiving the uplink grant, the terminal sends the uplink data to the base station. .
  • the terminal establishes a connection with the cells 5 and 6, and configures a dual connection.
  • the base station to which the cell 5 belongs is the MeNB, the other is the cell 6, and the home base station is the SeNB.
  • the terminal is configured with a data radio bearer (DRB), which is a data radio bearer 1 (DRB1), which is a split data radio bearer, and notifies the terminal to obtain a mapping relationship between the DRB and the QoS flow through the reflection method. Further, the terminal is also notified that, for the divided data radio bearer DRB1, the allocation ratio of the transmission data is 40% of the data transmitted by the MeNB and 60% of the data transmitted by the SeNb. Including the following steps:
  • Step 1 The base station detects that the SeNB has failed to send data.
  • Step 2 During the process of the base station waiting for the SeNB to recover, the base station is notified that the allocation ratio of the data transmitted by the DRB1 is 100% of the data transmitted by the MeNB, and 0% of the data is transmitted by the SeNB.
  • Step 3 The terminal receives the configuration of the base station, and detects that the DRB1 is a split radio bearer, and the DPS data distribution ratio of the DRB1 changes, triggering the BSR.
  • Step 4 After receiving the uplink resource, the terminal reports the BSR to the base station, and carries at least the BS information of the DRB1 on the MeNB and the BS information of the DRB1 on the SeNB.
  • Step 5 The base station receives the BSR reported by the terminal, and configures the uplink authorization according to the buffered data size.
  • Step 6 The terminal receives the uplink grant and sends uplink data to the base station.
  • the steps may also occur: the base station detects the SeNB recovery, and re-notifies the terminal that the allocation ratio of the data transmitted by the DRB1 is 30% of the data transmitted by the MeNB, 70% of the data transmitted by the SeNB, and the terminal receives the base station.
  • the BSR is triggered to detect that the DRB1 is a split radio bearer and the offload data ratio of the DRB1 changes.
  • the BSR includes at least the BS information of the DRB1 on the MeNB and the BS information of the DRB1 on the SeNB.
  • This embodiment uses the DRB as an example to illustrate the same processing manner for a signaling radio bearer (SRB).
  • SRB signaling radio bearer
  • the triggering device for the buffer status report includes:
  • the first detecting module 301 is configured to detect that a mapping relationship between the DRB and the quality of service flow changes
  • the first trigger module 302 is configured to trigger a BSR.
  • the triggering device further includes:
  • the first sending module 303 is configured to: after receiving the uplink resource, send the BSR to the base station, so that the base station configures an uplink grant for the terminal; and further, after receiving the uplink grant, sending the uplink data to the Said base station.
  • the BSR triggered by the terminal includes at least the buffered data size BS information of the logical channel group LCG to which the DRB belongs before the mapping relationship between the DRB and the QoS flow changes; and the DRB changes after the mapping relationship between the DRB and the QoS flow changes.
  • the BSR triggered by the terminal includes: buffer data of the PDCP layer corresponding to the packet data corresponding to the DRB, buffer data of the radio link control RLC layer, and data that the media intervention control MAC layer has not scheduled.
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes:
  • the terminal parses the downlink data packet of the DRB at the first time, obtains the service quality traffic identifier, and generates a first mapping relationship between the DRB and the QoS flow, or the terminal receives the RRC modification configuration command to obtain the first mapping. relationship;
  • the terminal detects that the mapping relationship between the DRB and the QoS flow changes
  • the initial mapping relationship includes: the terminal parsing the downlink data packet of the DRB at a second moment, obtaining a quality of service flow identifier, and generating an initial mapping relationship;
  • the initial mapping relationship includes: an initial mapping relationship obtained by the terminal by using an RRC initial configuration command.
  • the terminal After the terminal detects that the mapping relationship between the DRB and the QoS flow changes, the terminal includes:
  • the terminal When the terminal determines that the logical channel group LCG to which the DRB belongs changes, the terminal triggers the BSR;
  • the terminal when the terminal determines that the BS of the LCG to which the DRB belongs changes, the terminal triggers the BSR;
  • the terminal when the terminal determines that at least one of the first index value and the second index value is not 0, the terminal triggers a BSR; where the first index value is before the mapping relationship between the DRB and the QoS flow changes.
  • the index value corresponding to the BS of the LCG to which the DRB belongs, and the second index value is an index value corresponding to the BS of the LCG to which the DRB belongs after the mapping relationship between the DRB and the QoS flow is changed.
  • the terminal when the terminal determines that at least one of the following conditions is met, the terminal triggers the BSR; wherein the condition includes: a BS of the LCG to which the DRB belongs before the mapping relationship between the DRB and the QoS flow changes The index value corresponding to the BS of the LCG to which the DRB belongs is higher than the threshold 2, after the corresponding index value is lower than the threshold 1, the mapping between the DRB and the QoS flow is changed;
  • the terminal when the terminal determines that the DRB has a data packet arriveing, the terminal triggers the BSR.
  • the terminal when the terminal determines that the terminal receives the indication of triggering the BSR sent by the base station, the terminal triggers the BSR; wherein the indication of triggering the BSR is configured through RRC.
  • the terminal When the terminal detects that the MAC layer corresponding to the DRB has data waiting for scheduling, the terminal triggers the BSR.
  • FIG. 6 is a structural block diagram of a triggering device for a buffer status report according to Embodiment 10 of the present invention. As shown in FIG. 6, the triggering device for the buffer status report includes:
  • the second detecting module 401 is configured to detect that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes;
  • the second triggering module 402 is configured to trigger a BSR.
  • the second sending module 403 is configured to: after receiving the uplink resource, send the BSR to the base station, so that the base station configures an uplink grant for the terminal; and is configured to send the uplink after receiving the uplink grant. Data is sent to the base station.
  • the BSR triggered by the terminal includes at least: BS information of the DRB on the primary base station MeNB, and BS information of the DRB on the secondary base station SeNB.
  • the first detecting module 301, the first triggering module 302, and the first sending module 303, and the second detecting module 401, the second triggering module 402, and the first The two sending modules 403 can be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or the modules are respectively located in multiple processors.
  • An eleventh embodiment of the present invention provides a terminal including a memory and a processor, the memory storing a program, and when the program is read and executed by the processor, the following operations are performed:
  • mapping relationship between the data radio bearer DRB and the quality of service flow is detected to be changed
  • the terminal detects that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes;
  • the terminal triggers a BSR.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code configured to perform the following steps:
  • Step S101 The terminal detects that the mapping relationship between the data radio bearer DRB and the QoS flow QoS flow changes.
  • Step S102 The terminal triggers the buffer status report BSR.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • the processor executes the method steps described in the above embodiments according to the program code stored in the storage medium.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code configured to perform the following steps:
  • Step S201 The terminal detects that the DRB is a split data radio bearer, and the split data ratio of the split radio bearer changes.
  • Step S202 The terminal triggers a BSR.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • the processor executes the method steps described in the above embodiments according to the program code stored in the storage medium.
  • the terminal determines whether the BSR is triggered by detecting whether the mapping relationship between the DRB and the QoS flow changes, or whether the terminal detects whether the DRB is a split data radio bearer, and the split data of the split radio bearer is configured. Whether the ratio is changed or not, whether the BSR is triggered or not, the triggering method of the two BSRs of the terminal enables the base station to know in time that the terminal has prepared the BSR to be sent on the flow-based QoS architecture (that is, the details of the data to be sent by the terminal). Information), which enables more efficient allocation of resources to meet different QoS requirements for different services.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices.
  • they may be implemented by program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and in some cases may be performed in a different order than that illustrated herein.
  • the invention is not limited to any specific combination of hardware and software.
  • the terminal determines whether the BSR is triggered by detecting whether the mapping relationship between the DRB and the QoS flow changes, or the terminal detects whether the DRB is a split data radio bearer, and the Whether the split data ratio of the split radio bearer changes or not, and whether the BSR is triggered is triggered.
  • the triggering method of the two BSRs of the terminal enables the base station to know in time that the terminal has prepared the BSR to be sent on the flow-based QoS architecture (ie, The detailed information of the data to be sent by the terminal), which can allocate resources more efficiently and meet different QoS requirements of different services.

Abstract

本发明实施例公开了一种缓冲区状态报告的触发方法、装置、终端、存储介质，其中，该方法包括：终端检测到数据无线承载DRB和服务质量流的映射关系发生变化；所述终端触发缓冲区状态报告BSR。

Description

一种缓冲区状态报告的触发方法、装置、终端、存储介质
相关申请的交叉引用
本申请基于申请号为201710184414.8、申请日为2017年03月24日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及通信工程领域，特别涉及一种缓冲区状态报告的触发方法、装置、终端、存储介质。
背景技术
长期演进(Long Term Evolution，简称为LTE)系统中，终端建立数据无线承载(Data Radio Bearer，DRB)时，基站会分配该DRB归属的逻辑信道(Logical Channel，LC)，以及逻辑信道组(Logical Channel Group，LCG)，LCG目前有0，1，2，3共四个分组。处于连接态的终端需要发送上行数据时，如果没有足够的上行资源或授权，会先给基站发送缓冲区状态报告(Buffer Status Report，BSR)，携带LCG上准备好的缓冲数据信息即缓冲数据大小(Buffer Size，BS)对应的索引值。基站收到后根据收到的索引值获知缓冲数据大小给终端配置相应的上行授权，终端收到上行授权就可以发送上行数据。BS包含LCG上对应的DRB在无线链路控制(Radio Link Control，RLC)层的缓冲数据、分组数据汇聚(Packet Data Convergence Protocol，PDCP)层的缓冲数据。
为了让基站及时获知终端已经准备好了将要发送的BSR，定义了以下几个触发BSR的事件：上行数据到达包含比当前准备好的数据更高优先级 的数据到达或当前没有任何准备好的数据，收到上行资源分配并且填充的字节等于或大于BSR(包含头)，BSR周期定时器超时，重传BSR定时器超时并且当前有准备好的数据。当以上几个事件发生时，会触发BSR，终端在有上行授权后，就会发送BSR给基站。
为了满足可以预测到的未来更高、更快、更新的通信需求，业界已经着手展开对未来5G技术的研究。5G将在更大的吞吐量，更多的用户连接，更低时延，更高可靠性，更低功耗(包括网络侧设备和用户终端)方面进行进一步的技术研究。目前，业界提出了5G技术目标：到2020年左右，实现每区域1000倍的移动数据流量增长，每用户设备(User Equipment，UE)10到100倍的吞吐量增长，连接设备数10到100倍的增长，低功率设备10倍的电池寿命延长，以及端到端5倍延迟的下降。从应用场景的角度而言，5G将采用一个统一的技术架构来支持增强移动宽带(enhanced Mobile broadband，eMBB)业务，海量机器类(massive Machine Type Communication，mMTC)业务和高可靠低时延(Ultra Reliable and Low Latency)业务。不同业务对服务质量(Quality of Service，QoS)的要求是不同的。
LTE系统中，QoS架构的数据传输时以承载(bearer)作为最小QoS处理单位，如图1为LTE中以承载粒度执行QoS处理进行数据传输的结构示意图。图1只示例用户设备(UE)和分组数据网络(Public Data Network，PDN)之间建立一个PDN连接(PDN connection)的情况，为服务于该PDN连接上具有不同QoS需求的业务，核心网可以在UE和PDN网关(PDN gateway，P-GW)之间建立多个演进分组系统承载(Evolved Packet System bearer，EPS bearer)，每个EPS bearer上承载一个或多个数据业务流(service traffic flow，SDF)，承载在一个EPS bearer上的一个或者多个SDF将具有相同的QoS。EPS bearer是UE和P-GW之间的端到端逻辑承载，EPS bearer 在LTE网络架构中在所经过的三个网络接口上对应建立了三段承载，包括建立在P-GW与服务网关(Serving Gateway，S-GW)接口上的S5和S8bearer，建立在S-GW与基站(eNB)接口上的S1-bearer以及建立在eNB和UE之间空中接口上的数据无线承载(Data Radio Bearer，DRB)，其中S1-bearer和DRB一起又被定义为UE与S-GW之间的演进的通用陆地无线接入网承载(E-UTRAN Radio Access Bearer，E-RAB)。EPS bearer的建立以及SDF与EPS bearer的映射关系，完全由核心网决策和控制，核心网建立EPS bearer时，会通知eNB每个E-RAB(即EPS bearer在E-URTAN侧的一段承载)的QoS参数，eNB只能被动接受或者决绝，如果接受，则对应在空中接口上建立和UE之间的DRB，并根据接收到的E-RAB级别的QoS参数进行数据调度传输。
双连接(Dual Connectivity)中，终端可以同时与两个以上的网络节点保持连接，但是控制面连接只与其中一个小区比如宏小区有连接，举个例子来说，UE同时处在小区1及小区2的覆盖范围内，小区1归属eNB1是宏基站，小区2归属eNB2是小小区基站，当采用双连接技术时，UE与小区1保持连接如控制面链接，还可以包含用户面链接，同时，UE与小区2保持连接如用户面链接，即UE同时与小区1及小区2均建立有无线承载。双连接中，为了更好地进行基站间的负荷均衡，并最大程度地优化小区资源，引入分割数据无线承载，因此，双连接中，存在分割数据无线承载和非分割数据无线承载，非数据分割无线承载可以只存在于主基站(Master eNB，MeNB)、或辅基站(secondary eNB，SeNB)，一共会有三种类型的数据无线承载，只存在于MeNB上的数据无线承载简称MeNB承载，只存在于SeNB上的数据无线承载简称SeNB承载，同时存在于MeNB和SeNB上的数据无线承载简称分割承载(split承载)。对于上行数据如何通过MeNB和SeNB发送，即如何分配MeNB和SeNB发送比例，称为分流数据配比， 比如MeNB上发送该数据承载全部需要发送数据的30％，SeNB上发送该数据无线承载全部需要发送数据的70％。
LTE系统中，QoS策略和参数，以及SDF与承载之间的映射关系完全由核心网控制，基站只能被动地接受或拒绝建立DRB。在无线通信系统中，无线接口是真正执行和满足QoS的关键所在，而当前的QoS架构中，基站无法根据实际无线负荷、无线链路质量调整每个DRB上映射的SDF，因此无法最高效的执行QoS。此外，核心网和接入网耦合性太强，核心网的修改将直接影响接入网需要做出对应修改，无法实现核心网和接入网的独立扩展或演进。
为克服4G QoS架构中的以上缺陷，3GPP在5G系统设计中提出了一种基于流的QoS架构。在基于流的QoS架构中，核心网和无线接入网之间取消了承载，但是在空中接口上继续保留了DRB。但是，3GPP目前提出的以上基于流的QoS架构中，对于缓冲区状态报告的发送，尤其是缓冲区状态报告的触发，尚未有有效的解决方案。
发明内容
本发明实施例的主要目的是提供一种缓冲区状态报告的触发方法、装置、终端、存储介质，旨在5G系统基于流的QoS架构中解决缓冲区状态报告的触发问题。
本发明实施例一方面提供了一种缓冲区状态报告的触发方法，包括：终端检测到数据无线承载DRB和服务质量流的映射关系发生变化；所述终端触发缓冲区状态报告BSR。
本发明实施例还提供了另一种缓冲区状态报告的触发方法，终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；所述终端触发BSR。
本发明实施例还提供了一种缓冲区状态报告的触发装置，包括：第一 检测模块，配置为检测到DRB和服务质量流的映射关系发生变化；第一触发模块，配置为触发BSR。
本发明实施例还提供了一种缓冲区状态报告的触发装置，包括：
第二检测模块，配置为检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；第二触发模块，配置为触发BSR。
本发明实施例还提供了一种终端，包括存储器和处理器，所述存储器存储有程序，所述程序在被所述处理器读取执行时，执行以下操作：检测到数据无线承载DRB和服务质量流的映射关系发生变化；触发缓冲区状态报告BSR。
或者，执行以下操作：终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；所述终端触发BSR。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为LTE中以承载粒度执行QoS处理进行数据传输的结构示意图；
图2为基于流的QoS架构的示意图；
图3为本发明实施例一提供的缓冲区状态报告的触发方法的流程图；
图4为本发明实施例七提供的缓冲区状态报告的触发方法的流程图；
图5为本发明实施例九提供的缓冲区状态报告的触发装置的结构框图；
图6为本发明实施例十提供的缓冲区状态报告的触发装置的结构框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进 行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本申请实施例可以5G系统中，但不限于该系统。进一步的，本申请实施例应用于基于流的QoS架构上，该架构可以包括RAN侧设备(比如5G基站，eLTE基站等)和终端。在本申请实施例中提供了一种可运行于上述架构上的缓冲区状态报告的触发方法，需要说明的是，本申请实施例中提供的上述缓冲区状态报告的触发方法的运行环境并不限于上述架构。
以下将详细描述本申请实施例所应用的基于流的QoS架构，图2所示为基于流的QoS架构的示意图，5G核心网(Core)接收来自分组数据网络(比如，因特网(Internet))的SDF(比如，网络之间互联协议流向(IP Flow))，将SDF映射成服务质量流(QoS Flow)，比如可以将多个具有相同或者类似QoS要求的SDF聚合成一个QoS Flow，当然也可以是将一个SDF映射成一个QoS Flow。这里，5G核心网根据核心网的QoS策略，SDF的QoS需求，用户的签约信息等生成QoS规则(QoS rule)，并完成SDF到QoS Flow的映射。5G核心网通过与无线接入网(RAN)之间的控制面接口将其决策生成的QoS rule中的QoS特性参数发送给RAN(比如5G基站，eLTE基站等)，5G核心网通过与RAN之间的用户面接口将QoS Flow发送给RAN，在发送给RAN的每个包含QoS flow的数据包的包头中包含该数据包所使用的QoS特性参数的QoS标识(QoS ID)。RAN根据从核心网接收到的QoS特性参数，从核心网接收到的数据包包头中的QoS ID，将数据包映射到空中接口的DRB上，完成QoS Flow与DRB之间的映射。在此过程中，RAN侧可以充分考虑实际无线负荷、无线链路质量等因素，决策建立DRB以及决定将QoS Flow与DRB之间的映射关系。
实施例一
图3为本发明实施例一提供的缓冲区状态报告的触发方法的流程图，如图3所示，该缓冲区状态报告的触发方法包括：
步骤S101：终端检测到数据无线承载DRB和服务质量流QoS flow的映射关系发生变化；
步骤S102：所述终端触发所述缓冲区状态报告BSR。
按照上述的触发方法，终端通过检测DRB和QoS flow之间的映射关系是否发生变化，判断是否触发BSR，这种BSR的触发方法可以使得基站在基于流的QoS架构上，及时获知终端将要发送的BSR(也即终端将要发送的数据的详细信息)，这样能更有效地分配资源，满足不同业务的不同QoS要求。
上述方法的各步骤的实现细节如下：
在步骤S101中终端检测到DRB和QoS flow的映射关系发生变化，即首先，终端判断DRB和QoS flow的映射关系是否发生变化，其次，终端判断出DRB和QoS flow的映射关系发生变化。所述终端触发的BSR中例如可以至少包括：DRB和服务质量流的映射关系发生变化前，DRB所携逻辑信道组LCG的缓冲数据大小BS信息；和DRB和服务质量流的映射关系发生变化后，DRB所携LCG的BS信息。所述BS信息例如可以包括：所述BS对应的索引值。所述终端触发的BSR中例如还可以包括：所述DRB所携LCG中，分组数据汇聚PDCP层的数据、无线链路控制RLC层的数据、以及媒体介入控制MAC层尚未调度的数据。
需要注意的是，终端检测到DRB和QoS flow的映射关系发生变化，例如可以分为以下两种方法：
第一种，显式配置法(Explicit Configuration)。
在显式配置法中，一个可能的实现方式为：终端接收到基站发送的无线资源控制RRC初始配置命令；所述终端根据所述RRC初始配置命令， 配置所述DRB和服务质量流的映射关系；所述终端接收到基站发送的RRC修改配置命令；所述终端根据所述RRC修改配置命令，修改所述DRB和服务质量流的映射关系。当终端根据所述RRC修改配置命令，修改所述DRB和服务质量流的映射关系后，所述终端检测到DRB和QoS flow的映射关系发生变化。
第二种，反射法(Reflective mapping)。
反射法中，一个可能的实现方式为：所述终端在第一时刻解析所述BRD的下行数据包中包含的服务质量流量标识，并生成DRB和服务质量流的第一映射关系；当所述第一映射关系与DRB和服务质量流的初始映射关系不同时，所述终端检测到DRB和服务质量流的映射关系发生变化。
其中，所述初始映射关系例如可以包括：所述终端在第二时刻解析所述DRB的下行数据包中包含的服务质量流标识，并生成的初始映射关系；所述第二时刻包括：所述终端监测到DRB的下行数据包中包含服务质量流标识的时刻。或者，所述初始映射关系包括：所述终端通过无线资源控制RRC初始配置命令获得的初始映射关系。
当然，反射法中，还有其他的实现方式，例如，周期性的解析所述DRB的下行数据包中包含的QoS flow ID，并生成不同周期的DRB和QoS flow的映射关系，当相邻两个周期的映射关系不同时，所述终端检测到DRB和QoS flow的映射关系发生变化。
在步骤S102中所述终端触发BSR，其中，触发BSR是指：使终端做好发送BSR给基站的准备，一旦满足发送条件，马上将BSR发送给基站。
结合步骤S101和步骤S102，可总结为：终端判断DRB和QoS flow的映射关系是否发生变化，当DRB和QoS flow的映射关系发生变化时，所述终端触发BSR。而作为可选的方案，对于触发BSR的前提条件还可以增加。
增加一：当终端检测到DRB和QoS flow的映射关系发生变化后，还 需要判断QoS flow的逻辑信道组LCG是否发生变化；当所述服务质量流的LCG发生变化时，所述终端触发所述BSR。
增加二：当终端检测到DRB和QoS flow的映射关系发生变化后，还需要判断所述DRB所携LCG的BS是否发生变化；当所述BS对应的索引值发生变化时，所述终端触发所述BSR。需要注意的是，BS发生变化，可以是BS对应的索引发生变化。
增加三：当终端检测到DRB和QoS flow的映射关系发生变化后，所述终端判断DRB和服务质量流的映射关系发生变化前，所述LCG的BS对应的索引值，和，DRB和服务质量流的映射关系发生变化后，所述LCG的BS对应的索引值是否至少有一个不为0；当变化前所述LCG的BS对应的索引值和变化后所述LCG的BS对应的索引值至少有一个不为0时，所述终端触发所述BSR。
增加四：当终端检测到DRB和QoS flow的映射关系发生变化后，还需要判断是否满足以下至少之一的条件：DRB和服务质量流的映射关系发生变化前所述DRB所携LCG的BS对应的索引值低于门限1、DRB和服务质量流的映射关系发生变化后所述BS对应的索引值高于门限2；当满足以上至少之一的条件时，所述终端触发所述BSR。
增加五：所述终端检测到DRB和服务质量流的映射关系发生变化后，还需要判断所述DRB是否有数据包到达；当所述DRB有数据包到达时，所述终端触发所述BSR。
增加六：所述终端检测到DRB和服务质量流的映射关系发生变化后，还需要判断所述终端是否收到所述基站发送的触发BSR的指示；当所述终端收到所述基站发送的触发BSR的指示时，所述终端触发所述BSR；其中，所述触发BSR的指示通过RRC进行配置。
增加七：所述终端检测到DRB和服务质量流的映射关系发生变化后， 还需要判断所述终端是否收到所述基站发送的触发BSR的指示；当所述终端收到所述基站发送的触发BSR的指示时，所述终端触发所述BSR；其中，所述触发BSR的指示通过RRC进行配置。
需要注意的是，还有一种可能实现的方式为：当终端检测到DRB为分割无线承载，且所述分割无线承载的分流数据配比发生变化时，所述终端触发所述BSR。
还需要注意的是，另外一种可能实现的方式为：终端已经触发了BSR后，且收到上行资源后，上报BSR给基站，包含LCG中PDCP准备好的数据，RLC准备好的数据，MAC尚未调度的数据。此时，如果终端检测到MAC有新的数据等待调度，则终端触发所述BSR。
在步骤S102之后，即所述终端触发BSR之后，也即所述终端做好发送BSR给基站的准备之后，还包括：当所述终端收到上行资源后，终端发送所述BSR给基站，所述基站根据所述BSR(BSR携带LCG上准备好的缓冲数据信息即缓冲数据大小对应的索引值)为所述终端配置上行授权；所述终端收到所述上行授权后，发送上行数据给所述基站。
至此，便完成了终端给基站发送上行数据的过程，通过上述方法，终端通过检测DRB和QoS flow之间的映射关系是否发生变化，判断是否触发BSR，使得基站在基于流的QoS架构上，及时获知终端已准备好了将要发送的BSR(也即终端将要发送的数据的详细信息)，这样能更有效地分配资源，满足不同业务的不同QoS要求。
实施例二
本实施例是在实施例一的基础上缓冲区状态报告的触发方法的具体实施方式，终端与小区1建立了连接，配置有两个数据无线承载(DRB)，分别为数据无线承载1(DRB1)和数据无线承载2(DRB2)，并通知终端，通过反射法获得DRB和QoS flow的映射关系。
DRB和与归属的LC、LCG之间的对应关系如下表所示：
无线承载 归属的LC 归属的LCG
数据无线承载1 3 0
数据无线承载2 4 1
步骤一：在第二时刻，终端检测DRB1的下行数据包，解析出数据包中包含QoS flow ID为1，生成DRB和QoS flow的映射关系，终端检测DRB2的下行数据包，解析出数据包中包含QoS flow ID为2，生成DRB和QoS flow的映射关系(初始映射关系)，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载2 4 1
步骤二：在第一时刻，终端检测到DRB2的下行数据包中包含有QoS flow ID为1，而且DRB2的下行数据包中还包含有QoS flow ID为2，重新生成DRB和QoS flow的映射关系(第一映射关系)，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
NULL 数据无线承载1 3 0
2 数据无线承载2 4 1
1 数据无线承载2 4 1
终端检测到QoS flow ID1与DRB的映射关系发生变化(也即DRB和QoS flow的映射关系发生变化)，触发BSR。
步骤三：终端收到上行资源后，上报BSR给基站，携带变化前LCG0(分组为0的逻辑信道组)，及LCG0的缓冲数据大小(BS)对应的索引值，LCG1(分组为1的逻辑信道组)，及LCG1的BS对应的索引值。
其中，变化后LCG0因为没有映射的QoS flow ID，或者LCG0没有缓冲区数据，则变化后LCG0的BSR无需上报。
步骤四：基站收到终端上报的BSR，根据缓冲数据大小，配置上行授权。
步骤五：终端收到上行授权，发送上行数据给基站。
在一实施例中，上述步骤二实际上还需要进一步满足触发BSR更高的要求，例如：
终端检测到QoS flow ID1与DRB的映射关系发生变化，变化前QoS flow ID1映射的DRB1对应的LCG0，对应的BS不为0；
或者，变化后QoS flow ID1映射的DRB2对应的LCG1，对应的BS不为0，则触发BSR；
或者，变化前QoS flow ID1映射的DRB1对应的LCG0，对应的BS1，与变化后QoS flow ID1映射的DRB2对应的LCG1，对应的BS2，BS1和BS2不同，则触发BSR，所述不同，指的是，该BS对应的索引值不同；
或者，变化前QoS flow ID1映射的DRB1对应的LCG0，对应的BS1，低于指定门限1，且变化后映射的DRB2对应的LCG1，对应的BS2，高于指定门限2，则触发BSR；
或者，变化前QoS flow ID1映射的DRB1对应的LCG0，对应的BS1，低于指定门限1，则触发BSR；
或者，变化后映射的DRB2对应的LCG1，对应的BS2，高于指定门限2，则触发BSR。
实施例三
本实施例是在实施例一的基础上缓冲区状态报告的触发方法的具体实施方式，终端与小区2建立了连接，配置有两个数据无线承载(DRB)，分别为数据无线承载1(DRB1)和数据无线承载2(DRB2)，并通知终端，通过反射法获得数据无线承载和QoS flow的映射关系。
DRB和与归属的LC、LCG之间的对应关系如下表所示：
无线承载 归属的LC 归属的LCG
数据无线承载1 3 0
数据无线承载2 4 1
步骤一：在第二时刻，终端检测DRB1的下行数据包，解析出数据包中包含QoS flow ID为1，包含的QoS flow ID为2，生成DRB和QoS flow的映射关系，终端检测DRB2的下行数据包，解析出数据包中包含QoS flow ID为3，生成DRB和QoS flow的映射关系(初始映射关系)，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载1 3 0
3 数据无线承载2 4 1
步骤二：在第一时刻，终端检测到DRB1的下行数据包中包含有QoS flow ID为1，DRB2的下行数据包包含有QoS flow ID为2，还包含有QoS flow ID为3，重新生成DRB和QoS flow的映射关系(第一映射关系)，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载2 4 1
3 数据无线承载2 4 1
终端检测到QoS flow ID2与DRB的映射关系发生变化(也即DRB和QoS flow的映射关系发生变化)，触发BSR。
步骤三：终端收到上行资源后，上报BSR给基站，携带变化前的LCG0，及LCG0的缓冲数据大小对应的索引值，携带变化后的LCG1，及LCG1的缓冲数据大小对应的索引值。
步骤四：基站收到终端上报的BSR，根据缓冲数据大小，配置上行授权。
步骤五：终端收到上行授权，发送上行数据给基站。
本实施例进一步优化后，上述步骤二实际上还需要进一步满足触发BSR更高的要求，例如：
终端检测到QoS flow ID2与DRB的映射关系变化后，变化后QoS flow ID2映射的DRB2对应的LCG1，与变化前QoS flow ID2映射的DRB1对应的LCG0不同，因此触发BSR；
或者，终端检测到QoS flow ID2与DRB的映射关系变化后，变化后QoS flow ID2映射的DRB2检测到有新数据到达，触发BSR。
实施例四
本实施例是在实施例一的基础上缓冲区状态报告的触发方法的具体实施方式，终端与小区3建立了连接，配置有两个数据无线承载(BRD)，分别为数据无线承载1(BRD1)和数据无线承载2(BRD2)，并通知终端，通过显式配置法获得数据无线承载和QoS flow的映射关系，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载2 4 0
步骤一：T1时刻，终端收到基站的RRC配置命令，修改QoS flow ID为1映射到DRB2，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
NULL 数据无线承载1 3 0
2 数据无线承载2 4 0
1 数据无线承载2 4 0
终端检测到QoS flow ID1与DRB的映射关系发生变化(也即DRB和QoS flow的映射关系发生变化)，触发BSR。
步骤二：终端收到上行资源后，上报BSR给基站，携带变化前LCG0，及LCG0的缓冲数据大小对应的索引值。变化后也是LCG0，因此无需特别 处理。
步骤三：基站收到终端上报的BSR，根据缓冲数据大小，配置上行授权。
步骤四：终端收到上行授权，发送上行数据给基站。
本实施例进一步优化后，上述步骤二实际上还进一步满足了触发BSR更高的要求，例如：
终端检测到QoS flow ID1与DRB的映射关系变化后，变化后QoS flow ID1映射的DRB2对应的LCG0，与变化前QoS flow ID1映射的DRB1对应的LCG0相同，因此可以不触发BSR。需要注意的是，虽然在此步骤时，可以不触发BSR，但是终端将继续监测QoS flow与DRB的映射关系是否有新的变化，当有新的变化时，继续利用本申请的方法判断终端是否触发BSR。
或者，终端收到基站的RRC配置命令，修改QoS flow ID1映射到DRB2后，如果基站在命令中携带触发BSR的指示，则触发BSR，如果没有携带指示，则不触发BSR。需要注意的是，虽然在此步骤时，可以不触发BSR，但是终端将继续监测QoS flow与DRB的映射关系是否有新的变化，当有新的变化时，继续利用本申请的方法判断终端是否触发BSR。
实施例五
本实施例是在实施例一的基础上缓冲区状态报告的触发方法的具体实施方式，终端与小区4建立了连接，配置有两个数据无线承载(BRD)，分别为数据无线承载1(BRD1)和数据无线承载2(BRD2)，并通知终端，通过显式配置法获得数据无线承载和QoS flow的映射关系，如下表所示：
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载1 3 0
3 数据无线承载2 4 1
步骤一：T1时刻，终端收到基站的RRC配置命令，修改QoS flow ID为2 映射到DRB2，如下表所示
映射的QoS flow 无线承载 归属的LC 归属的LCG
1 数据无线承载1 3 0
2 数据无线承载2 4 1
3 数据无线承载2 4 1
终端检测到QoS flow ID2与DRB的映射关系发生变化(也即DRB和QoS flow的映射关系发生变化)，触发BSR。
步骤二：终端收到上行资源后，上报BSR给基站，携带变化前LCG0，及LCG0的缓冲数据大小对应的索引值。携带变化后LCG1，及LCG1的缓冲数据大小对应的索引值。
步骤三：基站收到终端上报的BSR，根据缓冲数据大小，配置上行授权。
步骤四：终端收到上行授权，发送上行数据给基站。
实施例六
以上实施例中，终端上报BSR时，携带终端侧LCG中缓冲数据大小(BS)，BS包括分组数据汇聚PDCP层准备好的数据，和无线链路控制RLC层准备好的数据，还可以包含媒体接入控制MAC(Media Access Control，MAC)层准备好的数据，其中MAC准备好的数据，指的是，MAC尚未调度的数据。
步骤一：终端收到上行资源后，上报BSR给基站，包含LCG中对应的DRB的PDCP层准备好的数据，RLC层准备好的数据，MAC层尚未调度的数据。
步骤二：MAC层检测到有新的数据等待调度，触发BSR。
实施例七
图4为本发明实施例七提供的缓冲区状态报告的触发方法的流程图，如图4所示，该缓冲区状态报告的触发方法包括：
步骤S201：终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
步骤S202：所述终端触发所述缓冲区状态报告BSR。
按照上述的触发方法，终端通过检测到DRB是否为分割数据无线承载，且所述分割无线承载的分流数据配比是否发生变化，判断是否触发BSR，这种BSR的触发方法可以使得基站在基于流的QoS架构上，及时获知终端将要发送的BSR(也即终端将要发送的数据的详细信息)，这样能更有效地分配资源，满足不同业务的不同QoS要求。
步骤S202中，所述终端触发的BSR中至少包括：主基站MeNB上DRB归属的LCG的BS信息，辅基站SeNB上DRB归属的LCG的BS信息。
在步骤S202之后，即所述终端触发BSR之后，也即所述终端做好发送BSR给基站的准备之后，还包括：当所述终端收到上行资源后，终端发送所述BSR给基站，所述基站根据所述BSR(BSR携带准备好的缓冲数据信息即缓冲数据大小对应的索引值)为所述终端配置上行授权；所述终端收到所述上行授权后，发送上行数据给所述基站。
实施例八
终端与小区5和6建立了连接，并配置了双连接，小区5归属的基站是MeNB，另外一个是小区6，归属的基站是SeNB。终端配置有一个数据无线承载(DRB)，为数据无线承载1(DRB1)，是分割数据无线承载，并通知终端，通过反射法获得DRB和QoS flow的映射关系。另外，还通知终端，对于分割数据无线承载DRB1，发送数据的分配比例是，通过MeNB发送数据的40％，通过SeNb发送数据的60％。包括如下步骤：
步骤一：基站检测到SeNB发生数据发送失败。
步骤二：基站等待SeNB恢复的过程中，通知终端，DRB1发送数据的分配比例是，通过MeNB发送数据的100％，通过SeNB发送数据的0％。
步骤三：终端收到基站的配置，检测到DRB1为分割无线承载，且DRB1的分流数据配比发生变化，则触发BSR。
步骤四：终端收到上行资源后，上报BSR给基站，携带至少MeNB上DRB1的BS信息，SeNB上DRB1的BS信息。
步骤五：基站收到终端上报的BSR，根据缓冲数据大小，配置上行授权。
步骤六：终端收到上行授权，发送上行数据给基站。
上述步骤三之后，还可能发生的步骤为：基站检测到SeNB恢复，重新通知终端，DRB1发送数据的分配比例是，通过MeNB发送数据的30％，通过SeNB发送数据的70％，终端收到基站的配置，检测到DRB1为分割无线承载，且DRB1的分流数据配比发生变化，则触发BSR，BSR至少包含MeNB上DRB1的BS信息，SeNB上DRB1的BS信息。
本实施例以DRB为例子说明，对于信令无线承载(signalling radio bearer，SRB)，同样的处理方式。
实施例九
图5为本发明实施例九提供的缓冲区状态报告的触发装置的结构框图，如图5所示，该缓冲区状态报告的触发装置包括：
第一检测模块301，配置为检测到DRB和服务质量流的映射关系发生变化；
第一触发模块302，配置为触发BSR。
所述触发装置，还包括：
第一发送模块303，配置为收到上行资源后，发送所述BSR给基站，以使所述基站为所述终端配置上行授权；还配置为收到所述上行授权后，发送上行数据给所述基站。
所述终端触发的BSR中至少包括：DRB和服务质量流的映射关系发生变化前，DRB归属的逻辑信道组LCG的缓冲数据大小BS信息；和DRB和服 务质量流的映射关系发生变化后，DRB归属的LCG的BS信息。
所述终端触发的BSR中包括：所述DRB对应的分组数据汇聚PDCP层的缓冲区数据、无线链路控制RLC层的缓冲区数据、以及媒体介入控制MAC层尚未调度的数据。
所述终端检测到DRB和服务质量流的映射关系发生变化包括：
所述终端在第一时刻解析所述DRB的下行数据包，获得服务质量流量标识，并生成DRB和服务质量流的第一映射关系，或者，所述终端收到RRC修改配置命令获得第一映射关系；
当所述第一映射关系与DRB和服务质量流的初始映射关系不同时，所述终端检测到DRB和服务质量流的映射关系发生变化；
所述初始映射关系包括：所述终端在第二时刻解析所述DRB的下行数据包，获得服务质量流标识，并生成的初始映射关系；
或者，所述初始映射关系包括：所述终端通过RRC初始配置命令获得的初始映射关系。
所述终端检测到DRB和服务质量流的映射关系发生变化后，包括：
当所述终端确定所述DRB归属的逻辑信道组LCG发生变化时，所述终端触发所BSR；
或者，当所述终端确定所述DRB归属的LCG的BS发生变化时，所述终端触发BSR；
或者，当所述终端确定第一索引值和第二索引值至少有一个不为0时，所述终端触发BSR；其中，所述第一索引值为DRB和服务质量流的映射关系发生变化前，所述DRB归属的LCG的BS对应的索引值，所述第二索引值为DRB和服务质量流的映射关系发生变化后，所述DRB归属的LCG的BS对应的索引值；
或者，当所述终端确定满足以下条件中的至少之一时，所述终端触发 所述BSR；其中，所述条件包括：DRB和服务质量流的映射关系发生变化前所述DRB归属的LCG的BS对应的索引值低于门限1、DRB和服务质量流的映射关系发生变化后所述DRB归属的LCG的BS对应的索引值高于门限2；
或者，当所述终端确定DRB有数据包到达时，所述终端触发所述BSR。
或者，当所述终端确定所述终端收到基站发送的触发BSR的指示，所述终端触发所述BSR；其中，所述触发BSR的指示通过RRC进行配置。
当所述终端监测到所述DRB对应的MAC层有数据等待调度时，所述终端触发所述BSR。
实施例十
图6是本发明实施例十提供的缓冲区状态报告的触发装置的结构框图，如图6所示，该缓冲区状态报告的触发装置包括：
第二检测模块401，配置为检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
第二触发模块402，配置为触发BSR。
还包括：第二发送模块403，配置为收到上行资源后，发送所述BSR给基站，以使所述基站为所述终端配置上行授权；还配置为收到所述上行授权后，发送上行数据给所述基站。
所述终端触发的BSR中至少包括：主基站MeNB上DRB的BS信息，辅基站SeNB上DRB的BS信息。
需要说明的是，上述实施例九和实施例十之中的第一检测模块301、第一触发模块302、和第一发送模块303，以及第二检测模块401、第二触发模块402、和第二发送模块403可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
实施例十一
本发明第十一实施例提供了一种终端，包括存储器和处理器，所述存储器存储有程序，所述程序在被所述处理器读取执行时，执行以下操作：
检测到数据无线承载DRB和服务质量流的映射关系发生变化；
触发缓冲区状态报告BSR。
或者，执行以下操作：
终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
所述终端触发BSR。
实施例十二
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储配置为执行以下步骤的程序代码：
步骤S101：终端检测到数据无线承载DRB和服务质量流QoS flow的映射关系发生变化；
步骤S102：所述终端触发所述缓冲区状态报告BSR。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
在本实施例中，处理器根据存储介质中已存储的程序代码执行上述实施例记载的方法步骤。
本实施例中的具体示例可以参考上述实施例一至六及可选实施方式中所描述的示例，本实施例在此不再赘述。
实施例十三
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储配置为执行以下步骤的程序代码：
步骤S201：终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
步骤S202：所述终端触发BSR。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
在本实施例中，处理器根据存储介质中已存储的程序代码执行上述实施例记载的方法步骤。
本实施例中的具体示例可以参考上述实施例七和八及可选实施方式中所描述的示例，本实施例在此不再赘述。
在上述实施例中，终端通过检测DRB和QoS flow之间的映射关系是否发生变化，判断是否触发BSR；或者终端通过检测到DRB是否为分割数据无线承载，且所述分割无线承载的分流数据配比是否发生变化，判断是否触发BSR，终端这两种BSR的触发方法可以使得基站在基于流的QoS架构上，及时获知终端已准备好了将要发送的BSR(也即终端将要发送的数据的详细信息)，这样能更有效地分配资源，满足不同业务的不同QoS要求。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
虽然本发明所揭露的实施方式如上，但所述的内容仅为便于理解本发 明而采用的实施方式，并非用以限定本发明。任何本发明所属领域内的技术人员，在不脱离本发明所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。
工业实用性
本发明实施例的技术方案具有以下的有益效果：终端通过检测DRB和QoS flow之间的映射关系是否发生变化，判断是否触发BSR；或者终端通过检测到DRB是否为分割数据无线承载，且所述分割无线承载的分流数据配比是否发生变化，判断是否触发BSR，终端这两种BSR的触发方法可以使得基站在基于流的QoS架构上，及时获知终端已准备好了将要发送的BSR(也即终端将要发送的数据的详细信息)，这样能更有效地分配资源，满足不同业务的不同QoS要求。

Claims (20)

  1. 一种缓冲区状态报告的触发方法，包括：
    终端检测到数据无线承载DRB和服务质量流的映射关系发生变化；
    所述终端触发缓冲区状态报告BSR。
  2. 如权利要求1所述的触发方法，其中，还包括：
    所述终端收到上行资源后，发送所述BSR给基站，以使所述基站为所述终端配置上行授权；
    所述终端收到所述上行授权后，发送上行数据给所述基站。
  3. 如权利要求1所述的触发方法，其中，所述终端触发的BSR中包括：
    DRB和服务质量流的映射关系发生变化前，DRB归属的逻辑信道组LCG的缓冲数据大小BS信息；和
    DRB和服务质量流的映射关系发生变化后，DRB归属的LCG的BS信息。
  4. 如权利要求3所述的触发方法，其中，所述BS信息包括：所述BS对应的索引值。
  5. 如权利要求1所述的触发方法，其中，所述终端触发的BSR中包括：所述DRB对应的分组数据汇聚PDCP层的缓冲区数据、无线链路控制RLC层的缓冲区数据、以及媒体介入控制MAC层尚未调度的数据。
  6. 如权利要求1所述的触发方法，其中，所述终端检测到DRB和服务质量流的映射关系发生变化包括：
    所述终端在第一时刻解析所述DRB的下行数据包，获得服务质量流量标识，并生成DRB和服务质量流的第一映射关系，或者，所述终端收到无线资源控制RRC修改配置命令，获得第一映射关系；
    当所述第一映射关系与DRB和服务质量流的初始映射关系不同时，所述终端检测到DRB和服务质量流的映射关系发生变化。
  7. 如权利要求6所述的触发方法，其中，
    所述初始映射关系包括：所述终端在第二时刻解析所述DRB的下行数据包，获得服务质量流标识，并生成的初始映射关系；
    或者，所述初始映射关系包括：所述终端通过RRC初始配置命令获得的初始映射关系。
  8. 如权利要求1-7中任一项所述的触发方法，其中，所述终端触发BSR，包括：
    当所述终端确定所述DRB归属的逻辑信道组LCG发生变化时，所述终端触发所述BSR；
    或者，当所述终端确定所述DRB归属的LCG的BS发生变化时，所述终端触发所述BSR；
    或者，当所述终端确定第一索引值和第二索引值至少有一个不为0时，所述终端触发BSR；其中，所述第一索引值为DRB和服务质量流的映射关系发生变化前，所述DRB归属的LCG的BS对应的索引值，所述第二索引值为DRB和服务质量流的映射关系发生变化后，所述DRB归属的LCG的BS对应的索引值；
    或者，当所述终端确定满足以下条件中的至少之一时，所述终端触发所述BSR；其中，所述条件包括：DRB和服务质量流的映射关系发生变化前所述DRB归属的LCG的BS对应的索引值低于门限1、DRB和服务质量流的映射关系发生变化后所述DRB归属的LCG的BS对应的索引值高于门限2；
    或者，当所述终端确定DRB有数据包到达时，所述终端触发所述BSR；
    或者，当所述终端确定所述终端收到基站发送的触发BSR的指示，所述终端触发所述BSR；其中，所述触发BSR的指示通过RRC进行配置。
  9. 如权利要求5所述的触发方法，其中，当所述终端监测到所述DRB 对应的MAC层有数据等待调度时，所述终端触发所述BSR。
  10. 一种缓冲区状态报告的触发方法，
    终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
    所述终端触发BSR。
  11. 如权利要求10所述的触发方法，还包括：
    所述终端收到上行资源后，发送所述BSR给基站，以使所述基站为所述终端配置上行授权；
    所述终端收到所述上行授权后，发送上行数据给所述基站。
  12. 如权利要求10所述的触发方法，其中，所述终端触发的BSR中至少包括：主基站MeNB上DRB归属的LCG的BS信息，辅基站SeNB上DRB归属的LCG的BS信息。
  13. 一种缓冲区状态报告的触发装置，包括：
    第一检测模块，配置为检测到DRB和服务质量流的映射关系发生变化；
    第一触发模块，配置为触发BSR。
  14. 如权利要求13所述的触发装置，还包括：
    第一发送模块，配置为收到上行资源后，发送所述BSR给基站，以使所述基站为所述终端配置上行授权；还配置为收到所述上行授权后，发送上行数据给所述基站。
  15. 一种缓冲区状态报告的触发装置，包括：
    第二检测模块，配置为检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
    第二触发模块，配置为触发BSR。
  16. 如权利要求15所述的触发装置，还包括：
    第二发送模块，配置为收到上行资源后，发送所述BSR给基站，以使 所述基站为所述终端配置上行授权；还配置为收到所述上行授权后，发送上行数据给所述基站。
  17. 一种终端，包括存储器和处理器，所述存储器存储有程序，所述程序在被所述处理器读取执行时，执行以下操作：
    检测到数据无线承载DRB和服务质量流的映射关系发生变化；
    触发缓冲区状态报告BSR。
  18. 一种终端，其中，包括存储器和处理器，所述存储器存储有程序，所述程序在被所述处理器读取执行时，执行以下操作：
    终端检测到所述DRB为分割数据无线承载，且所述分割无线承载的分流数据配比发生变化；
    所述终端触发BSR。
  19. 一种存储介质，其中，所述存储介质被设置为存储设置为执行权利要求1-9中任一步骤的程序代码。
  20. 一种存储介质，其中，所述存储介质被设置为存储设置为执行权利要求10-12中任一步骤的程序代码。
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