WO2015139373A1 - 一种上报和接收缓冲区状态的方法和装置 - Google Patents

一种上报和接收缓冲区状态的方法和装置 Download PDF

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Publication number
WO2015139373A1
WO2015139373A1 PCT/CN2014/078934 CN2014078934W WO2015139373A1 WO 2015139373 A1 WO2015139373 A1 WO 2015139373A1 CN 2014078934 W CN2014078934 W CN 2014078934W WO 2015139373 A1 WO2015139373 A1 WO 2015139373A1
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Prior art keywords
data size
base station
buffered data
size information
bsr
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PCT/CN2014/078934
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English (en)
French (fr)
Inventor
陈中明
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中兴通讯股份有限公司
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Publication date
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 JP2016558348A priority Critical patent/JP6438044B2/ja
Priority to US15/127,658 priority patent/US10091687B2/en
Priority to EP14886347.5A priority patent/EP3122138B1/en
Publication of WO2015139373A1 publication Critical patent/WO2015139373A1/zh

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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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of radio bearer technologies, and in particular, to a method and apparatus for reporting and receiving buffer status.
  • the protocol architecture of the terminal-side user plane includes the following protocol layers from the bottom to the top:
  • PHY Physical
  • MAC media access control
  • the MAC layer mainly provides data transmission and is responsible for radio resource allocation through logical channels, and performs hybrid automatic repeat request (HARQ, Hybrid ARQ), scheduling (SCH, Scheduling), priority processing, and multiplexing demultiplexing (MUX, Multiplexing). Other functions;
  • the Radio Link Control (RLC) layer mainly provides segmentation and retransmission services for user and control data;
  • Packet Data Convergence Protocol (PDCP) layer mainly for
  • the RRC or user plane completes the transfer of user data.
  • the method for the terminal to send uplink data generally includes:
  • the terminal establishes a data radio bearer (DRB) with the base station; the base station allocates a logical channel group (LCG) to which the DRB belongs, and the LCG includes four groups of 0, 1, 2, and 3; the terminal needs to send
  • a buffer status report (BSR, buffer status report) is sent to the base station, and the index value corresponding to the buffered data information (that is, the buffered data size) of the radio bearer in the BSR is carried.
  • the buffered data size includes the sum of the sizes of the buffered data of the data radio bearer at the RLC layer and the PDCP layer.
  • the base station obtains the buffered data size according to the index value in the received BSR, and configures the corresponding uplink grant for the terminal; the terminal sends the uplink data after receiving the uplink grant.
  • the terminal can report a short BSR (Long BSR), or a long BSR (Long BSR), or a intercepted BSR (Truncated BSR).
  • Long BSR Long BSR
  • Long BSR long BSR
  • Truncated BSR intercepted BSR
  • a dual-connected terminal can maintain data connections with more than two serving nodes (such as base stations) at the same time, but the control plane connection is only connected to one of the serving nodes (such as the base station of the macro cell).
  • One of the current protocol architectures uses a split bearer to split the data radio bearer between multiple base stations, that is, one data radio bearer data is transmitted through multiple base stations.
  • this architecture there is only one PDCP layer corresponding to the terminal and the base station, but each RLC layer corresponds to the RLC layer on each base station. Therefore, when the terminal sends uplink data to the base station, the data of the PDCP layer needs to be segmented and sent to The base station, and the data of the RLC layer are correspondingly transmitted to the corresponding base station.
  • the embodiment of the present invention provides a method and apparatus for reporting and receiving a buffer state, which can perform buffer status reporting when there is a split bearer.
  • an embodiment of the present invention provides a method for reporting a buffer status, including:
  • the terminal When the terminal determines that the radio bearer has a split bearer or receives a notification that the base station needs to report an extra buffer report, the terminal sends a buffer status report BSR of the radio bearer to the base station;
  • the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the method further comprises:
  • the terminal receives uplink authorization information sent by the base station; the uplink authorization information is the The base station determines according to the BSR and the transmission rule.
  • the extra buffered data size information is a total mitigation of the PDCP layer of the packet data convergence corresponding to each split bearer in the radio bearer.
  • the data size information is the total buffered data size information of the packet data convergence PDCP layer or the radio link control RLC layer.
  • the buffered data size information is an index value corresponding to the buffered data size; the total buffered data size information is an index value corresponding to the total buffered data size.
  • the embodiment of the invention further provides a method for receiving a buffer status, including:
  • the base station receives a buffer status report BSR of the radio bearer sent by the terminal, and the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the method further comprises:
  • the base station determines uplink grant information according to information about the BSR and the sending rule, and sends the uplink grant information to the terminal.
  • the additional buffered data size information is buffered data size information of a packet data convergence PDCP layer corresponding to each split bearer in the radio bearer or buffered data size information of a radio link control RLC layer.
  • the sending rule is determined in advance by the base station in advance with other base stations except the base station, or after determining the BSR, and then negotiated with the other base station.
  • the sending rule is: a proportion of allocation of buffer data of the PDCP layer sent by different base stations.
  • the embodiment of the present invention further provides an apparatus for reporting a buffer status, which includes at least a sending module: the sending module is configured to determine that a radio bearer has a split bearer or that the base station sends an extra buffer that needs to be reported. And reporting the buffer status report BSR of the radio bearer to the base station; the BSR carries buffered data size information and additional buffered data size information of the data radio bearer.
  • the receiving module further comprises: The receiving module is configured to receive uplink grant information sent by the base station; the uplink grant information is determined by the base station according to the BSR and a sending rule.
  • the extra buffered data size information is total buffered data size information of a packet data convergence PDCP layer corresponding to each split bearer in the radio bearer;
  • the extra buffered data size information is total buffered data size information of a packet data convergence PDCP layer or a radio link control RLC layer.
  • the buffered data size information is an index value corresponding to the buffered data size; the total buffered data size information is an index value corresponding to the total buffered data size.
  • the embodiment of the present invention further provides a device for receiving a buffer status, which at least includes a receiving module: the receiving module is configured to receive a buffer status report of a data radio bearer sent by the terminal.
  • the BSR the BSR carries buffered data size information of the data radio bearer, or the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the sending module is further included:
  • the sending module is configured to determine uplink authorization information according to the BSR and the sending rule, and send the uplink authorization information to the terminal.
  • the additional buffered data size information is buffered data size information of a packet data convergence PDCP layer corresponding to each split bearer in the radio bearer or buffered data size information of a radio link control RLC layer.
  • the sending rule is determined in advance by the base station in advance with other base stations except the base station, or after determining the BSR, and then negotiated with the other base station.
  • the sending rule is: a proportion of allocation of buffer data of the PDCP layer sent by different base stations.
  • the embodiment of the present invention includes: when the terminal determines that there is a split bearer or receives a notification that the base station needs to report an additional buffer report, the terminal sends the BSR of the radio bearer to the base station.
  • the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the terminal sends a corresponding BSR to each base station, and determines that the data radio bearer has a split bearer or receives the sent by the base station.
  • the BSR carries the extra buffered data size information, so that the buffer status is reported when there is a split bearer, so that each base station can obtain relatively accurate delay.
  • the data size is rushed, and the terminal processing is simple, and the time response of the terminal response data transmission is improved.
  • FIG. 1 is a flowchart of a method for reporting a buffer status according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for receiving a buffer state according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for buffering a buffer state according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for receiving a buffer state according to an embodiment of the present invention.
  • an embodiment of the present invention provides a method for reporting a buffer state, where the method is applicable to a protocol architecture of a split bearer mode, including:
  • Step 100 When the terminal determines that the radio bearer has a split bearer or receives a notification that the base station needs to report the extra buffer report, the terminal sends the BSR of the radio bearer to the base station; the BSR carries the buffered data size information of the radio bearer and the extra Buffer data size information.
  • Step 101 The terminal receives the uplink authorization information sent by the base station, and the terminal sends the uplink data according to the uplink authorization information.
  • Steps 100 and 101 are described in detail below:
  • the terminal when the terminal determines that the radio bearer has a split bearer or receives a notification that the base station needs to report the extra buffer report, the terminal sends the BSR of the radio bearer to the base station; Carry buffered data size information and extra buffered data size information of the radio bearer.
  • the extra buffered data size information includes the total buffered data size information of the PDCP layer corresponding to each split bearer in the radio bearer, that is, each The buffered data size information of the sum of the buffered data sizes of the corresponding PDCP layers is divided.
  • the extra buffered data size information is the total buffered data size information of the PDCP layer or the RLC layer, that is, the buffered data size of each split bearer of the PDCP layer or the RLC layer. And buffered data size information.
  • the BSR only carries the buffered data size information of the radio bearer.
  • the total buffered data size information is an index value corresponding to the total buffered data size.
  • the buffered data size information is an index value corresponding to the buffered data size.
  • the buffered data size is the sum of the buffered data sizes of the PDCP layer and the RLC layer.
  • the buffered data size of the radio bearers carried by the BSR is the sum of the buffered data sizes of the radio bearers.
  • the radio bearer may be a data radio bearer or a signaling radio bearer.
  • the terminal may determine, according to the bearer configuration information, whether the radio bearer has a split bearer, and the bearer configuration information is sent by the base station to the terminal in the process of establishing the radio bearer, and how the terminal determines whether the radio bearer has the split bearer according to the bearer configuration information.
  • the bearer configuration information is sent by the base station to the terminal in the process of establishing the radio bearer, and how the terminal determines whether the radio bearer has the split bearer according to the bearer configuration information.
  • the base station may also send a notification to the terminal that the additional buffer report needs to be reported, and the terminal no longer needs to determine whether the radio bearer has a split bearer according to the bearer configuration information.
  • the format of the BSR is shown in Table 1 and Table 2.
  • Table 1 shows the short BSR or the intercepted BSR.
  • Table 2 is the format of the long BSR.
  • Table 1 LCGO corresponding radio bearer LCG corresponding to the radio bearer corresponding to the radio bearer LCG corresponding to the radio bearer LCG corresponding to the radio bearer buffer data size information data size information punch data size information punch data size information
  • Table 1 can be represented by two bytes, one byte for LCG identification and buffered data size information, and another byte for LCG identification and extra buffered data size information.
  • the LCG flag is 2 bits, and the buffer data size information and the extra buffer data size information are both 6 bits.
  • Table 2 can be represented by 6 bytes.
  • the first three bytes represent the buffered data size information corresponding to the four LCGs, and the last three bytes represent the additional buffered data size information corresponding to the four LCGs.
  • the buffer size information and the extra buffer data size information are both 6 bits. In this step, if there are multiple split bearers in one base station, each split bearer may be assigned to a different LCG.
  • step 101 the terminal receives the uplink grant information sent by the base station, and the terminal sends the uplink data according to the uplink grant information.
  • the uplink grant information is determined by the base station according to the information of both the BSR and the sending rule.
  • the embodiment of the present invention further provides a method for receiving a buffer state. Referring to FIG. 2, the method includes: Step 200: A base station receives a BSR of a radio bearer sent by a terminal, and the BSR carries buffered data size information and an additional buffer of the radio bearer. Data size information.
  • the extra buffered data size information is buffered data size information of the PDCP layer corresponding to each split bearer in the radio bearer or buffered data size information of the RLC layer.
  • Step 201 The base station determines uplink authorization information according to the BSR and the sending rule, and sends the uplink authorization information to the terminal.
  • the sending rule is determined in advance by the base station and other base stations, or is determined in advance by negotiation with other base stations after receiving the BSR.
  • the base station may determine the uplink authorization information by using the related technology, and is not used to limit the protection scope of the embodiment of the present invention.
  • the sending rule may be, but is not limited to, a data allocation ratio of buffer data transmitted by different base stations in the PDCP layer.
  • the base station 1 is a macro base station, and has one cell, which is a cell 1
  • the base station 2 is a small cell base station, and has two cells, which are a cell 3 and a cell 4.
  • the following embodiments are described for the data radio bearer.
  • the signaling radio bearer reporting BSR step is the same as the data radio bearer reporting BSR. The following embodiments are not repeatedly described.
  • the terminal establishes a connection with the cell 1. Due to the increase of the traffic, the base station 1 adds the cell 3 to the terminal according to the measurement report, and is configured with two data radio bearers, namely the data radio bearer 1 and the data radio bearer 2, all of which belong to the LCG0, wherein
  • the data radio bearer 2 is a radio bearer that can perform split transmission, that is, it can be separately transmitted by the base station 1 and the base station 2.
  • Step 1 When the terminal needs to send uplink data, calculate the buffer data size of all current LCGs (currently only LCG0) of each base station.
  • Step 2 The terminal determines that there is a split bearer according to the configuration information, so it is necessary to report the extra buffer data size information.
  • the buffered data size information reported by the terminal to the base station 1 is calculated as follows:
  • the extra buffered data size information is the PDCP layer data buffer size of the radio bearer 2, that is, 400. Therefore, the terminal reports the BSR to the base station 1, and the buffered data size carrying the LCG0 is an index value corresponding to 1100. In addition, the buffer data size is carried as an index value corresponding to 400.
  • the buffered data size information reported by the terminal to the base station 2 is calculated as follows:
  • the buffered data size is 400
  • the additional bearer splits the PDCP data buffer size 400 of the radio bearer 2 at this time. Therefore, the terminal reports the BSR to the base station 2, and carries the LCG0 buffer data size of 800 corresponding index value.
  • the buffer data size is carried as an index value corresponding to 400.
  • Step 10 The data radio bearer between the base station 1 and the base station 2 negotiates the transmission rules of the cell 1 and the cell 3.
  • the result of the negotiation is that for dividing the data carrying the PDCP layer, cell 1 transmits 30%, and cell 3 transmits 70%.
  • Step 11 The base station 1 receives the BSR reported by the terminal, determines the uplink authorization information according to the buffered data size and the negotiated sending rule, and sends the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 1 needs to send 120.
  • Step 12 The base station 2 receives the BSR reported by the terminal, determines the uplink authorization information according to the buffered data size and the negotiated sending rule, and sends the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 1 needs to send 280.
  • Step 13 The base station 1 or the base station 2 may decide to initiate a re-negotiation process of the sending rule according to the received BSR. After the negotiation is completed, the base station 1 and the base station 2 perform transmission data scheduling according to the new sending rule.
  • the terminal establishes a connection with the cell 1. Due to the increase of the traffic, the base station 1 adds the cell 3 to the terminal according to the measurement report, and is configured with two data radio bearers, namely, the data radio bearer 1 and the data radio bearer 2, and the data radio bearer 1 belongs to LCG0, the data radio bearer 2 belongs to the LCG1, where the data radio bearer 2 is a radio bearer that can perform split transmission, that is, can be separately transmitted by the base station 1 and the base station 2. Terminal behavior:
  • Step 20 When the terminal needs to send uplink data, calculate the buffer data size of all current LCGs (currently LCG0 and LCG1) of each base station.
  • the base station 1 has two LCGs, so the long BSR is reported, and the base station 2 has an LCG, so the short BSR is reported.
  • Step 21 The terminal determines that there is a split bearer according to the configuration information, and therefore needs to report additional BS information.
  • the buffered data size information reported by the terminal to the base station 1 is calculated as follows:
  • the extra buffered data size information is the RLC layer data buffer size, which is 200.
  • the extra buffered data size information is the RLC layer data buffer size, which is 300.
  • the terminal reports the BSR to the base station 1, and the buffered data size of the LCG0 is 400, and the buffered data size of the LCG1 is 700.
  • LCG2, LCG 3 does not have a data radio bearer, so the buffered data size is zero.
  • the LCG0 buffer data size is an index value corresponding to 200, and the LCG1 buffer data size is 300.
  • the LCG2 and LCG3 have no data radio bearer, so the buffer data size is 0.
  • the terminal calculates the buffered data size information of the LCG, if the LCG does not have a split bearer, the additional buffered data size information does not need to be reported, and if there is a split bearer, an additional buffer needs to be reported.
  • Data size information then LCG0 does not need to report additional buffered data size information, LCG1 needs to report additional buffered data size information, or all LCGs need to report additional cached data size information, regardless of whether there is segmentation of the radio bearer belonging to the LCG. If there is no split, the extra cache data size information is 0.
  • the buffered data size information reported by the terminal to the base station 2 is calculated as follows:
  • the extra buffered data size information is the RLC layer data buffer size, that is, 400. Therefore, the terminal reports the BSR to the base station 2, and the buffer data size of the LCG1 is 800.
  • the LCG1 buffered data has an index value corresponding to 400.
  • the terminal calculates and reports the data according to the LCG0 and/or the LCG1.
  • Step 30 The base station 1 and the base station 2 negotiate the transmission rules of the data radio bearer 2 in the cell 1 and the cell 3.
  • the result of the negotiation is that for dividing the data carrying the PDCP layer, cell 1 transmits 20%, and cell 3 transmits 80%.
  • Step 31 The base station 1 receives the BSR reported by the terminal, determines the uplink authorization information according to the buffered data size and the negotiated sending rule, and sends the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 1 needs to send 80.
  • Step 32 The base station 2 receives the BSR reported by the terminal, determines the uplink authorization information according to the buffered data size and the negotiated sending rule, and sends the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 1 needs to send 320.
  • the terminal establishes a connection with the cell 1. Due to the increase of the traffic, the base station 1 adds the cell 3 to the terminal according to the measurement report, and is configured with two data radio bearers, namely the data radio bearer 1 and the data radio bearer 2, all of which belong to the LCG0, wherein
  • the data radio bearer 2 is a radio bearer that can perform split transmission, that is, can be separately transmitted by the base station 1 and the base station 2.
  • Step 40 When the terminal needs to send uplink data, calculate the buffered data size of all current LCGs (currently only LCG0) of each base station.
  • Step 41 The terminal receives the notification of the base station 1 and learns that the extra buffer data size information needs to be reported, that is, the buffered data size information of the PDCP layer of the bearer is divided.
  • the buffered data size information reported by the terminal to the base station 1 is calculated as follows:
  • the extra buffered data size information is a PDCP data buffer size of the radio bearer 2 at the time of the split bearer, that is, 400. Therefore, the terminal reports the BSR to the base station 1, and the buffered data size carrying the LCG0 is an index value corresponding to 1100.
  • the buffer data size is carried as an index value corresponding to 400.
  • Step 42 The terminal learns that there is a split bearer according to the configuration, and therefore needs to report additional buffered data size information.
  • the BS reported by the terminal to the base station 2 is calculated as follows:
  • the buffered data size is 400
  • the extra reporting split bearer is the PDCP layer data buffer size 400 of the radio bearer 2 at this time. Therefore, the terminal reports the BSR to the base station 2, and carries the LCG0 buffer data size of 800 corresponding index value.
  • the buffer data size is carried as an index value corresponding to 400.
  • Step 50 The base station 1 and the base station 2 perform data radio bearer 2 and negotiate the transmission rules of the cell 1 and the cell 3.
  • the result of the negotiation is that for dividing the data carrying the PDCP layer, cell 1 transmits 30%, and cell 3 transmits 70%.
  • the base station 1 notifies the terminal that additional buffered data size information needs to be reported.
  • Step 51 The base station 1 receives the BSR reported by the terminal, determines the uplink authorization information according to the buffered data size and the negotiated sending rule, and sends the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 1 needs to send 120.
  • Step 52 The base station 2 receives the BSR reported by the terminal, according to the size of the buffered data and the negotiation. Send the rule, determine the uplink authorization information, and send the uplink authorization information to the terminal.
  • the terminal receives the uplink grant information and sends the uplink data.
  • the PDCP layer data size is 400.
  • the base station 2 needs to send 280.
  • Step 53 The base station 1 or the base station 2 may decide to initiate a re-negotiation process of the sending rule according to the received BSR. After the negotiation is completed, the base station 1 and the base station 2 perform data transmission scheduling according to the new sending rule.
  • the terminal is configured with the cell 1, the cell 3, and the cell 4, the cell 3 and the cell 4 are all attributed to the base station 2, but the process and calculation method of the BSR reported by the terminal to the base station 2 are not affected.
  • the process of reporting a short BSR, long BSR, or intercepting a BSR is the same.
  • the transmission rule such as the buffer data of each divided bearer in the PDCP layer, is determined in advance by the base station and other base stations in advance by the base station, or after being received by the BSR, and negotiated with other base stations in advance.
  • the negotiation process can refer to the following steps:
  • Step 60 The base station 1 sends a request for the buffer data of each divided bearer of the PDCP layer to the base station 2 by using a data distribution ratio (the ratio of the base station 1 to the base station 2 is 3: 7) sent by the different base stations;
  • Step 61 Base station 2 After receiving the request, if the confirmation ratio is appropriate, the response message is sent, the ratio is confirmed, and the process ends.
  • the base station 2 If the base station 2 confirms that the ratio is not appropriate, it responds with a response message, and sends a recommended response to the base station 2, for example, a ratio of base station 1 to base station 2 of 2:8.
  • Step 62 After receiving the response message from the base station 2, the base station 1 responds to the response message if the confirmation ratio is appropriate, and confirms the ratio, and the process ends.
  • the embodiment of the present invention further provides a device (300) for reporting a buffer status.
  • a device (300) for reporting a buffer status Referring to FIG. 3, at least a transmitting module (301) and a receiving module (302) are included:
  • the sending module (301) is configured to: after determining that the radio bearer has a split bearer or receiving a notification that the base station needs to report the extra buffer report, send a buffer status report BSR of the radio bearer to the base station; the BSR carries the data Buffered data size information and extra buffered data size information for wireless bearers.
  • the method further includes:
  • the receiving module (302) is configured to: receive uplink authorization information sent by each base station; The information is determined by the base station according to the BSR and the transmission rule.
  • the extra buffered data size information is the total buffered data size information of the packet data convergence PDCP layer corresponding to each split bearer in the radio bearer;
  • the extra buffered data size information is the total buffered data size information of the packet data convergence PDCP layer or the radio link control RLC layer.
  • the buffered data size information is an index value corresponding to the buffered data size; and the total buffered data size information is an index value corresponding to the total buffered data size.
  • the embodiment of the present invention further provides a device (400) for receiving a buffer status.
  • a device (400) for receiving a buffer status Referring to FIG. 4, at least a receiving module (401) and a sending module (402) are included:
  • the receiving module (401) is configured to: receive a BSR of a data radio bearer sent by the terminal, and the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the sending module (402) is configured to: determine uplink grant information according to the BSR and the sending rule, and send the uplink grant information to the terminal.
  • the extra buffered data size information is buffered data size information of the PDCP layer corresponding to each split bearer in the radio bearer or buffered data size information of the RLC layer.
  • the sending rule is determined in advance by the base station and other base stations, or is determined by negotiation with other base stations after receiving the BSR.
  • the transmission rule is: the allocation ratio of the buffer data of the PDCP layer transmitted by different base stations.
  • the embodiment of the present invention includes: when the terminal determines that there is a split bearer or receives a notification sent by the base station that needs to report an additional buffer report, the terminal sends the base station to the base station Sending a BSR of the radio bearer; the BSR carries buffered data size information and additional buffered data size information of the radio bearer.
  • the terminal sends a corresponding BSR to each base station, and when it is determined that the data radio bearer has a split bearer or receives a notification that the base station needs to report an additional buffer report, the BSR
  • the extra buffer data size information is carried in, so that the buffer state reporting is performed when there is a split bearer, so that each base station can obtain a relatively accurate buffer data size, and the terminal processing is simple, and the terminal response data is The timeliness of delivery is improved.

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Abstract

本发明实施例提出了一种上报和接收缓冲区状态的方法和装置，包括：当终端判断出存在分割承载或接收到所述基站发送的需要上报额外缓冲区报告的通知时，终端向所述基站发送所述无线承载的缓冲区状态报告BSR；所述BSR携带所述无线承载的缓冲数据大小信息和额外缓冲数据大小信息。本发明实施例实现了在存在分割承载时进行缓冲区状态的上报。

Description

一种上报和接收緩冲区状态的方法和装置
技术领域
本发明涉及无线承载技术领域， 尤其涉及一种上报和接收緩冲区状态的 方法和装置。
背景技术
长期演进（ LTE, Long Term Evolution ) 系统中 , 终端侧用户面的协议架 构从下往上包括以下几个协议层：
物理（PHY, Physical )层， 主要通过传输信道向媒体接入控制 （MAC,
Media Access Control )层或更高层传送信息；
MAC层， 主要通过逻辑信道提供数据传输和负责无线资源分配， 完成混 合自动重传请求（HARQ, Hybrid ARQ ) 、 调度（ SCH, Scheduling ) 、 优先 级处理和复用解复用 （MUX, Multiplexing )等功能；
无线链路控制（ RLC, Radio Link Control )层， 主要提供用户和控制数据 的分段和重传服务；
分组数据汇聚 ( PDCP, Packet Data Convergence Protocol )层， 主要给
RRC或用户面上层完成用户数据的传递。
上述协议架构下， 终端发送上行数据的方法大致包括：
终端与基站建立数据无线承载（DRB, Data Radio Bearer )； 基站为终端 分配该 DRB归属的逻辑信道组（LCG, Logical Channel Group ) , LCG包括 0, 1 , 2, 3四个分组； 终端需要发送上行数据， 且检测到没有上行资源或授 权时， 向基站发送緩冲区状态报告 ( BSR , buffer status report ) , BSR中携 带无线承载的緩冲数据信息 （即緩冲数据大小）对应的索引值； 其中， 緩冲 数据大小包含数据无线承载在 RLC层和 PDCP层的緩冲数据的大小之和。基 站根据收到 BSR中的索引值获取緩冲数据大小，为终端配置相应的上行授权； 终端收到上行授权后发送上行数据。终端按照实际情况，可上报短 BSR( Short BSR ) , 或长 BSR ( Long BSR ) , 或截取的 BSR ( Truncated BSR ) 。 由于频谱资源的匮乏， 以及移动用户的大流量业务的激增， 为增加用户 吞吐量和增强移动性能，釆用高频点如 3.5GHz进行热点覆盖， 并釆用低功率 的节点， 而高频点的信号衰减较快， 小小区的覆盖范围比较小， 并且与相关 的小区不共站点。 目前， 不少公司和运营商都倾向于寻求一种新的协议架构， 双连接（Dual Connectivity )就是其中之一。 双连接下终端可以同时与两个以 上的服务节点 （如基站）保持数据连接， 但是控制面连接只与其中一个服务 节点 （如宏小区的基站）有连接。
目前协议架构之一釆用分割承载（ Split bearer )的方式， 将数据无线承载 在多个基站之间进行分割， 即一个数据无线承载的数据通过多个基站进行发 送。 该架构中， 终端与基站上对应的 PDCP层只有一个， 但是各 RLC层与各 基站上的 RLC层——对应，因此，终端向基站发送上行数据时，需要将 PDCP 层的数据进行分割发送给基站， 而 RLC层的数据则相对应地发送给对应的基 站。 但是， 目前， 基于分割承载时如何上报 BSR緩冲数据信息尚未有公开的 技术方案， 也就是说， 此时， 基站无法准确获知终端需要发送的数据， 则终 端在发送上行数据过程中造成资源浪费或不足。
发明内容
为了解决上述问题， 本发明实施例提出了一种上报和接收緩冲区状态的 方法和装置， 能够在存在分割承载时进行緩冲区状态的上报。
为了达到上述目的， 本发明实施例提出了一种上报緩冲区状态的方法， 包括：
当终端判断出无线承载存在分割承载或接收到基站发送的需要上报额外 緩冲区报告的通知时， 所述终端向所述基站发送所述无线承载的緩冲区状态 报告 BSR;
所述 BSR携带所述无线承载的緩冲数据大小信息和额外緩冲数据大小信 息。
优选地， 还包括：
所述终端接收所述基站发送的上行授权信息； 所述上行授权信息是所述 基站根据所述 BSR和发送规则确定的。
本发明实施例的方法中， 当所述无线承载同时存在分割承载和非分割承 载时， 所述额外緩冲数据大小信息为所述无线承载中各分割承载对应的分组 数据汇聚 PDCP层的总緩冲数据大小信息； 当所述无线承载均为所述分割承 载时， 所述额外緩冲数据大小信息为分组数据汇聚 PDCP层或无线链路控制 RLC层的总緩冲数据大小信息。
优选地， 所述緩冲数据大小信息为所述緩冲数据大小对应的索引值； 所 述总緩冲数据大小信息为所述总緩冲数据大小对应的索引值。
本发明实施例还提出了一种接收緩冲区状态的方法， 包括：
基站接收终端发送的无线承载的緩冲区状态报告 BSR,所述 BSR携带所 述无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
优选地， 还包括：
所述基站根据所述 BSR和发送规则两者的信息确定上行授权信息， 并向 终端发送所述上行授权信息。
优选地， 所述额外緩冲数据大小信息为所述无线承载中各分割承载对应 的分组数据汇聚 PDCP层的緩冲数据大小信息或无线链路控制 RLC层的緩冲 数据大小信息。
优选地， 所述发送规则由所述基站与除此基站外的其他基站预先协商确 定， 或在接收到所述 BSR后再与所述其他基站协商确定。
优选地， 所述发送规则是： 不同基站发送的所述 PDCP层的緩冲区数据 的分配比例。
本发明实施例还提出了一种上报緩冲区状态的装置，至少包括发送模块： 所述发送模块 , 设置为判断出无线承载存在分割承载或接收到所述基站 发送的需要上报额外緩冲区报告的通知， 向所述基站发送所述无线承载的緩 冲区状态报告 BSR;所述 BSR携带所述数据无线承载的緩冲数据大小信息和 额外緩冲数据大小信息。
优选地， 还包括接收模块： 所述接收模块， 设置为接收所述基站发送的上行授权信息； 所述上行授 权信息是所述基站根据所述 BSR和发送规则确定的。
优选地， 当所述无线承载同时存在分割承载和非分割承载时， 所述额外 緩冲数据大小信息为所述无线承载中各分割承载对应的分组数据汇聚 PDCP 层的总緩冲数据大小信息； 当所述无线承载均为所述分割承载时， 所述额外 緩冲数据大小信息为分组数据汇聚 PDCP层或无线链路控制 RLC层的总緩冲 数据大小信息。
优选地， 所述緩冲数据大小信息为所述緩冲数据大小对应的索引值； 所 述总緩冲数据大小信息为所述总緩冲数据大小对应的索引值。
本发明实施例还提出了一种接收緩冲区状态的装置，至少包括接收模块： 所述接收模块， 设置为接收终端发送的数据无线承载的緩冲区状态报告
BSR, 所述 BSR携带所述数据无线承载的緩冲数据大小信息， 或者所述 BSR 携带所述无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
优选地， 还包括发送模块：
所述发送模块， 设置为根据所述 BSR和发送规则确定上行授权信息， 并 向终端发送所述上行授权信息。
优选地， 所述额外緩冲数据大小信息为所述无线承载中各分割承载对应 的分组数据汇聚 PDCP层的緩冲数据大小信息或无线链路控制 RLC层的緩冲 数据大小信息。
优选地， 所述发送规则由所述基站与除此基站外的其他基站预先协商确 定， 或在接收到所述 BSR后再与所述其他基站协商确定。
优选地， 所述发送规则是： 不同基站发送的所述 PDCP层的緩冲区数据 的分配比例。
与相关技术相比， 本发明实施例包括： 当终端判断出存在分割承载或接 收到所述基站发送的需要上报额外緩冲区报告的通知时， 终端向所述基站发 送所述无线承载的 BSR; BSR携带所述无线承载的緩冲数据大小信息和额外 緩冲数据大小信息。 通过本发明实施例的方案， 终端向各基站发送对应的 BSR, 并在判断出所述数据无线承载存在分割承载或接收到所述基站发送的 需要上报额外緩冲区报告的通知时， 在 BSR中携带额外緩冲数据大小信息， 从而实现了在存在分割承载时进行緩冲区状态的上报， 使得每个基站都能获 取到相对准确的緩冲数据大小， 而且使得终端处理简单， 终端响应数据发送 时效性提高。
附图概述
下面对本发明实施例中的附图进行说明， 实施例中的附图是用于对本发 明的进一步理解， 与说明书一起用于解释本发明， 并不构成对本发明实施例 保护范围的限制。
图 1为本发明实施例中上报緩冲区状态的方法流程图；
图 2为本发明实施例中接收緩冲区状态的方法流程图；
图 3为本发明实施例中上 4艮緩冲区状态的装置的结构组成示意图； 图 4为本发明实施例中接收緩冲区状态的装置的结构组成示意图。
本发明的较佳实施方式
下面结合附图对本发明实施例作进一步的描述， 并不能用来限制本发明 实施例的保护范围。
参见图 1 , 本发明实施例提出了一种上报緩冲区状态的方法， 所述方法 适用于釆用分割承载方式的协议架构的场景， 包括：
步骤 100、 当终端判断出无线承载存在分割承载或接收到基站发送的需 要上报额外緩冲区报告的通知时， 终端向基站发送无线承载的 BSR; BSR携 带无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
步骤 101、 终端接收基站发送的上行授权信息， 终端根据上行授权信息 发送上行数据。
下面分别对步骤 100及步骤 101作详细描述：
对于步骤 100、 当终端判断出无线承载存在分割承载或接收到基站发送 的需要上报额外緩冲区报告的通知时，终端向基站发送无线承载的 BSR; BSR 携带无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
本步骤中， 当终端判断出基站上的无线承载同时存在分割承载和非分割 承载时， 额外緩冲数据大小信息包含无线承载中各分割承载对应的 PDCP层 的总緩冲数据大小信息， 即各分割承载对应的 PDCP层的緩冲数据大小之和 的緩冲数据大小信息。
当终端判断出基站上的无线承载均为分割承载时， 额外緩冲数据大小信 息为 PDCP层或 RLC层的总緩冲数据大小信息， 即 PDCP层或 RLC层各分 割承载的緩冲数据大小之和的緩冲数据大小信息。
当终端判断出基站上的无线承载不存在分割承载， 且未接收到所述基站 发送的需要上报额外緩冲区报告的通知时， BSR只携带无线承载的緩冲数据 大小信息。
其中， 总緩冲数据大小信息为总緩冲数据大小对应的索引值。
本步骤中， 緩冲数据大小信息为緩冲数据大小对应的索引值。
其中， 緩冲数据大小为 PDCP层和 RLC层的緩冲数据大小之和。
若有多个无线承载， 则 BSR携带的无线承载的緩冲数据大小为各无线承 载的緩冲数据大小之和。
本步骤中， 无线承载可以是数据无线承载或信令无线承载。
本步骤中， 终端可以根据承载配置信息来判断无线承载是否存在分割承 载， 该承载配置信息在建立无线承载过程中由基站发给终端， 终端如何根据 承载配置信息来判断无线承载是否存在分割承载属于相关技术。 或者，
基站也可以向终端发送需要上报额外緩冲区报告的通知， 则终端不再需 要根据承载配置信息来判断无线承载是否存在分割承载。
本步骤中， 可以釆用在 BSR中增加新的字段存放 PDCP层或 RLC层的 緩冲数据大小信息， BSR的格式如表 1和表 2所示， 其中， 表 1为短 BSR或 截取 BSR的格式， 表 2为长 BSR的格式。
Figure imgf000008_0001
表 1 LCGO对应的无线承载的緩 LCG1对应的无线承载的緩 LCG2对应的无线承载的緩 LCG3对应的无线承载的緩 冲数据大小信息 冲数据大小信息 冲数据大小信息 冲数据大小信息
LCG0对应的额外緩冲数据 LCG1对应的额外緩冲数据 LCG2对应的额外緩冲数据 LCG3对应的额外緩冲数据 大小信息 大小信息 大小信息 大小信息
表 2
表 1可以釆用两个字节来表示，一个字节表示 LCG标识和緩冲数据大小 信息， 另一个字节表示 LCG标识和额外緩冲数据大小信息。 LCG标识是 2 个比特， 緩冲区数据大小信息和额外緩冲区数据大小信息都是 6个比特。
表 2中， 如果 LCG没有对应的数据无线承载， 则取为 0。
表 2可以釆用 6个字节来表示，前三个字节表示 4个 LCG对应的緩冲数 据大小信息， 后三个字节表示 4个 LCG对应的额外緩冲数据大小信息。 緩冲 区数据大小信息和额外緩冲区数据大小信息都是 6个比特。 本步骤中， 若一 个基站中存在多个分割承载， 可以将各分割承载归属于不同的 LCG。
对于步骤 101、 终端接收基站发送的上行授权信息， 终端根据上行授权 信息发送上行数据。
本步骤中，上行授权信息是基站根据 BSR和发送规则两者的信息确定的。 本发明实施例还提出了一种接收緩冲区状态的方法， 参见图 2, 包括： 步骤 200、 基站接收终端发送的无线承载的 BSR, BSR携带无线承载的 緩冲数据大小信息和额外緩冲数据大小信息。
本步骤中，额外緩冲数据大小信息为无线承载中各分割承载对应的 PDCP 层的緩冲数据大小信息或 RLC层的緩冲数据大小信息。
本发明实施例提出的一种接收緩冲区状态的方法中， 还包括：
步骤 201、 基站根据 BSR和发送规则确定上行授权信息， 并向终端发送 上行授权信息。
本步骤中， 发送规则由基站与其他基站预先协商确定， 或接收到 BSR后 与其他基站预先协商确定。 本发明实施例的保护范围。
本步骤中， 基站可以釆用相关技术确定上行授权信息， 并不用于限定本 发明实施例的保护范围。
本步骤中， 发送规则可以但不限于是 PDCP层各分割承载的緩冲区数据 通过不同基站发送的数据分配比例。
以下实施例中， 基站 1是宏基站， 有 1个小区， 是小区 1 , 基站 2是小 小区基站， 有两个小区， 分别是小区 3和小区 4。 以下实施例针对数据无线 承载来描述， 信令无线承载上报 BSR步骤与数据无线承载上报 BSR的步骤 一样， 以下实施例不再重复描述。
实施例一
终端与小区 1建立了连接， 由于业务量增加， 基站 1根据测量报告， 给 终端增加小区 3 , 配置有两个数据无线承载， 分别为数据无线承载 1和数据 无线承载 2, 都归属 LCG0, 其中数据无线承载 2是可以进行分割发送的无线 承载， 即， 可以通过基站 1和基站 2分别进行发送。
终端的行为：
步骤 1、 终端需要发送上行数据时， 计算每个基站当前所有 LCG (当前 只有 LCG0 ) 的緩冲数据大小。
因为只有 LCG0, 因此釆用短 BSR上报， LCG0上有两个无线数据承载， 因此可以一起进行计算。
步骤 2、 终端根据配置信息判断出存在分割承载， 因此需要上报额外緩 冲数据大小信息。
终端上报给基站 1的緩冲数据大小信息计算如下：
RLC层上有两个数据无线承载， 緩冲数据大小为 200+300=500, PDCP 层上两个数据无线承载的緩冲数据大小为 600。 因此， BSR上携带的緩冲数 据大小为 500+600=1100, 另外， 额外緩冲数据大小信息为分割承载此时为无 线承载 2的 PDCP层数据緩冲大小， 即 400。 因此， 终端上报 BSR给基站 1 , 携带 LCG0的緩冲数据大小为 1100对应的索引值。 另外， 携带緩冲数据大小 为 400对应的索引值。 终端上报给基站 2的緩冲数据大小信息计算如下：
RLC层上只有一个数据无线承载 2, 因此緩冲数据大小为 400, PDCP层 上数据无线承载 2的緩冲数据大小为 400, 因此 BSR上携带的数据緩冲大小 为 400+400=800, 另夕卜， 额外上 ^艮分割承载此时为无线承载 2的 PDCP数据 緩冲大小 400。 因此终端上报 BSR给基站 2, 携带 LCG0的緩冲数据大小为 800对应的索引值。 另外， 携带緩冲数据大小为 400对应的索引值。
基站的行为：
步骤 10、 基站 1与基站 2之间进行数据无线承载 2在小区 1和小区 3的 发送规则协商。
协商结果为， 对于分割承载 PDCP层的数据， 小区 1发送 30%, 小区 3 发送 70%。
步骤 11、 基站 1收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 1需要发送 120。
步骤 12、 基站 2收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 1需要发送 280。
步骤 13、 基站 1或基站 2可以根据收到的 BSR, 决定发起发送规则的再 次协商流程， 协商完成后， 基站 1和基站 2按照新的发送规则进行发送数据 调度。
实施例二
终端与小区 1建立了连接， 由于业务量增加， 基站 1根据测量报告， 给 终端增加小区 3 , 配置有两个数据无线承载， 分别为数据无线承载 1和数据 无线承载 2, 数据无线承载 1归属 LCG0, 数据无线承载 2归属 LCG1 , 其中 数据无线承载 2是可以进行分割发送的无线承载， 即可以通过基站 1和基站 2分别进行发送。 终端的行为：
步骤 20、 终端需要发送上行数据时， 计算每个基站当前所有 LCG (当前 有 LCG0和 LCG1 ) 的緩冲数据大小。
基站 1有两个 LCG, 因此釆用长 BSR上报， 基站 2有一个 LCG, 因此 釆用短 BSR上报。
步骤 21、终端根据配置信息判断出存在分割承载， 因此需要上报额外 BS 信息。
终端上报给基站 1的緩冲数据大小信息计算如下：
RLC层上数据无线承载 1的緩冲数据大小为 200, PDCP层上数据无线承 载 1 的緩冲数据大小为 200 , 因此 BSR 上携带的数据緩冲大小为 200+200=400,另夕卜，额外緩冲数据大小信息为 RLC层数据緩冲大小，即 200。
RLC层上数据无线承载 2的緩冲数据大小为 300, PDCP层上数据无线承 载 2 的緩冲数据大小为 400 , 因此 BSR 上携带的数据緩冲大小为 300+400=700,另夕卜，额外緩冲数据大小信息为 RLC层数据緩冲大小，即 300。
因此， 终端上报 BSR给基站 1 , 携带 LCG0的緩冲数据大小为 400对应 的索引值， 携带 LCG1的緩冲数据大小为 700对应的索引值。 LCG2, LCG 3 没有数据无线承载， 因此緩冲数据大小为 0。 另外， 携带 LCG0緩冲数据大 小为 200对应的索引值，携带 LCG1緩冲数据大小为 300对应的索引值, LCG2 , LCG 3没有数据无线承载， 因此緩冲数据大小为 0。
此时， 可以进一步细化为， 终端计算 LCG的緩冲数据大小信息时， 如果 该 LCG不存在分割承载， 则不需要上报额外緩冲数据大小信息， 如果存在分 割承载， 则需要上报额外緩冲数据大小信息， 那么 LCG0则不需要上报额外 緩冲数据大小信息， LCG1需要上报额外緩冲数据大小信息，或者所有的 LCG 都需要上报额外緩存数据大小信息，无论归属该 LCG的无线承载是否存在分 割， 如果不存在分割， 则额外緩存数据大小信息为 0。
终端上报给基站 2的緩冲数据大小信息计算如下：
RLC层上数据无线承载 2的緩冲数据大小为 400, PDCP层上数据无线承 载 2 的緩冲数据大小为 400 , 因此 BSR 上携带的数据緩冲大小为 400+400=800,另夕卜，额外緩冲数据大小信息为 RLC层数据緩冲大小，即 400。 因此， 终端上报 BSR给基站 2, 携带 LCG1的緩冲数据大小为 800对应 的索引值。 另外， 携带 LCG1緩冲数据大小为 400对应的索引值。
上述， 如果基站还给终端配置 LCG2和 LCG3上的数据无线承载， 那么 终端分别按照 LCG0和 /或 LCG1进行计算并上报。
基站的行为：
步骤 30、 基站 1与基站 2之间进行关于数据无线承载 2在小区 1和小区 3的发送规则的协商。
协商结果为， 对于分割承载 PDCP层的数据， 小区 1发送 20%, 小区 3 发送 80%。
步骤 31、 基站 1收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 1需要发送 80。
步骤 32、 基站 2收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 1需要发送 320。
实施例三
终端与小区 1建立了连接， 由于业务量增加， 基站 1根据测量报告， 给 终端增加小区 3 , 配置有两个数据无线承载， 分别为数据无线承载 1和数据 无线承载 2, 都归属 LCG0, 其中数据无线承载 2是可以进行分割发送的无线 承载， 即可以通过基站 1和基站 2分别进行发送。
终端的行为：
步骤 40、 终端需要发送上行数据时， 计算每个基站当前所有 LCG (当前 只有 LCG0 ) 的緩冲数据大小。
因为只有 LCG0, 因此釆用短 BSR上报， LCG0上有两个无线数据承载， 因此可以一起进行计算。
步骤 41、 终端收到基站 1的通知获知需要上报额外緩冲数据大小信息， 即分割承载的 PDCP层的緩冲数据大小信息。
终端上报给基站 1的緩冲数据大小信息计算如下：
RLC层上有两个数据无线承载， 緩冲数据大小为 200+300=500, PDCP 层上两个数据无线承载的緩冲数据大小为 600, 因此 BSR上携带的数据緩冲 大小为 500+600=1100, 另外， 额外緩冲数据大小信息为分割承载此时为无线 承载 2的 PDCP数据緩冲大小， 即 400。 因此， 终端上报 BSR给基站 1 , 携 带 LCG0的緩冲数据大小为 1100对应的索引值。 另外， 携带緩冲数据大小为 400对应的索引值。
步骤 42、 终端根据配置获知存在分割承载， 因此需要上报额外緩冲数据 大小信息。
终端上报给基站 2的 BS计算如下：
RLC层上只有一个数据无线承载 2, 因此緩冲数据大小为 400, PDCP层 上数据无线承载 2的緩冲数据大小为 400, 因此 BSR上携带的数据緩冲大小 为 400+400=800, 另夕卜， 额外上报分割承载此时为无线承载 2的 PDCP层数 据緩冲大小 400。 因此终端上报 BSR给基站 2, 携带 LCG0的緩冲数据大小 为 800对应的索引值。 另外， 携带緩冲数据大小为 400对应的索引值。
基站的行为：
步骤 50、 基站 1与基站 2进行数据无线承载 2在小区 1和小区 3的发送 规则协商。
协商结果为， 对于分割承载 PDCP层的数据， 小区 1发送 30%, 小区 3 发送 70%。 另外， 基站 1通知终端， 需要上报额外緩冲数据大小信息。
步骤 51、 基站 1收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 1需要发送 120。
步骤 52、 基站 2收到终端上报的 BSR, 根据緩冲数据大小以及协商的发 送规则， 确定上行授权信息， 并将上行授权信息发送给终端。
终端收到上行授权信息， 发送上行数据， 此时 PDCP层数据大小为 400, 按照发送规则， 基站 2需要发送 280。
步骤 53、 基站 1或基站 2可以根据收到的 BSR, 决定发起发送规则的再 次协商流程， 协商完成后， 基站 1和基站 2按照新的发送规则进行发送数据 调度。
以上实施例， 如果终端被配置了小区 1 , 小区 3和小区 4, 小区 3和小区 4都归属于基站 2, 但是不影响终端上报基站 2的 BSR的过程和计算方法。 另外， 上报短 BSR, 长 BSR或者截取 BSR, 过程都是一样的。
发送规则如 PDCP层各分割承载的緩冲区数据通过不同基站发送的数据 分配比例由基站与其他基站预先协商确定， 或接收到 BSR后与其他基站预先 协商确定。 协商过程可以参考以下步骤：
步骤 60: 基站 1发送 PDCP层各分割承载的緩冲区数据通过不同基站发 送的数据分配比例（此时为基站 1与基站 2的比例为 3: 7 )的请求给基站 2; 步骤 61 : 基站 2收到请求后， 如果确认比例合适， 则回应响应消息， 确 认比例， 过程结束。
如果基站 2确认比例不合适， 则回应响应消息， 发送推荐的比例如基站 1与基站 2的比例为 2: 8的回应给基站 2。
步骤 62: 基站 1收到基站 2的响应消息后， 如果确认比例合适， 则回应 响应消息， 确认比例， 过程结束。
本发明实施例还提出了一种上报緩冲区状态的装置 （300 ) , 参见图 3 , 至少包括发送模块（301 )和接收模块（302 ) ：
发送模块（ 301 )设置为： 判断出无线承载存在分割承载或接收到基站发 送的需要上报额外緩冲区报告的通知后， 向基站发送无线承载的緩冲区状态 报告 BSR; BSR携带所述数据无线承载的緩冲数据大小信息和额外緩冲数据 大小信息。
本发明实施例中的所述上 4艮緩冲区状态的装置中， 还包括：
接收模块（302 )设置为： 接收各基站发送的上行授权信息； 上行授权信 息是基站根据 BSR和发送规则确定的。
本发明实施例的所述装置中，当无线承载存在分割承载和非分割承载时， 额外緩冲数据大小信息为无线承载中各分割承载对应的分组数据汇聚 PDCP 层的总緩冲数据大小信息； 当无线承载均为所述分割承载时， 额外緩冲数据 大小信息为分组数据汇聚 PDCP层或无线链路控制 RLC层的总緩冲数据大小 信息。
本发明实施例的所述装置中， 緩冲数据大小信息为緩冲数据大小对应的 索引值； 总緩冲数据大小信息为总緩冲数据大小对应的索引值。
本发明实施例还提出了一种接收緩冲区状态的装置 （400 ) , 参见图 4, 至少包括接收模块（ 401 )和发送模块（ 402 ) ：
所述接收模块（401 )设置为： 接收终端发送的数据无线承载的 BSR, BSR携带无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
所述发送模块（ 402 )设置为： 根据 BSR和发送规则确定上行授权信息， 并向终端发送上行授权信息。
本发明实施例的所述装置中， 额外緩冲数据大小信息为无线承载中各分 割承载对应的 PDCP层的緩冲数据大小信息或 RLC层的緩冲数据大小信息。
本发明实施例的所述装置中，发送规则由基站与其他基站预先协商确定， 或接收到 BSR后与其他基站协商确定。
本发明的装置中， 发送规则是： 不同基站发送的 PDCP层的緩冲区数据 的分配比例。
以上实施例仅是为了便于本领域的技术人员理解而已， 并不用于限制本 发明实施例的保护范围， 在不脱离本发明实施例的发明构思的前提下， 本领 域技术人员对本发明实施例所做出的任何显而易见的替换和改进等均在本发 明实施例的保护范围之内。
工业实用性
与相关技术相比， 本发明实施例包括： 当终端判断出存在分割承载或接 收到所述基站发送的需要上报额外緩冲区报告的通知时， 终端向所述基站发 送所述无线承载的 BSR; BSR携带所述无线承载的緩冲数据大小信息和额外 緩冲数据大小信息。 通过本发明实施例的方案， 终端向各基站发送对应的 BSR, 并在判断出所述数据无线承载存在分割承载或接收到所述基站发送的 需要上报额外緩冲区报告的通知时， 在 BSR中携带额外緩冲数据大小信息， 从而实现了在存在分割承载时进行緩冲区状态的上报， 使得每个基站都能获 取到相对准确的緩冲数据大小， 而且使得终端处理简单， 终端响应数据发送 时效性提高。

Claims

权 利 要 求 书
1、 一种上 緩冲区状态的方法， 包括：
当终端判断出无线承载存在分割承载或接收到基站发送的需要上报额外 緩冲区报告的通知时， 所述终端向所述基站发送所述无线承载的緩冲区状态 报告 BSR;
所述 BSR携带所述无线承载的緩冲数据大小信息和额外緩冲数据大小信 息。
2、 根据权利要求 1所述上报緩冲区状态的方法， 还包括：
所述终端接收所述基站发送的上行授权信息； 所述上行授权信息是所述 基站根据所述 BSR和发送规则确定的。
3、 根据权利要求 1所述的上报緩冲区状态方法， 其中， 当所述无线承载 同时存在分割承载和非分割承载时， 所述额外緩冲数据大小信息为所述无线 承载中各分割承载对应的分组数据汇聚 PDCP层的总緩冲数据大小信息； 当 所述无线承载均为所述分割承载时， 所述额外緩冲数据大小信息为分组数据 汇聚 PDCP层或无线链路控制 RLC层的总緩冲数据大小信息。
4、 根据权利要求 3所述上报緩冲区状态的方法， 其中， 所述緩冲数据大 小信息为所述緩冲数据大小对应的索引值； 所述总緩冲数据大小信息为所述 总緩冲数据大小对应的索引值。
5、 一种接收緩冲区状态上报緩冲区状态的方法， 包括：
基站接收终端发送的无线承载的緩冲区状态报告 BSR,所述 BSR携带所 述无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
6、 根据权利要求 5所述上报緩冲区状态的方法， 还包括：
所述基站根据所述 BSR和发送规则两者的信息确定上行授权信息， 并向 所述终端发送所述上行授权信息。
7、 根据权利要求 5所述上报緩冲区状态的方法， 其中， 所述额外緩冲数 据大小信息为所述无线承载中各分割承载对应的分组数据汇聚 PDCP层的緩 冲数据大小信息或无线链路控制 RLC层的緩冲数据大小信息。
8、 根据权利要求 6所述上报緩冲区状态的方法， 其中， 所述发送规则由 所述基站与除此基站外的其他基站预先协商确定， 或在接收到所述 BSR后再 与所述其他基站协商确定。
9、根据权利要求 6所述上报緩冲区状态的方法，其中，所述发送规则是： 不同基站发送的所述 PDCP层的緩冲区数据的分配比例。
10、 一种上 緩冲区状态的装置， 包括： 发送模块， 其中，
所述发送模块设置为： 判断出无线承载存在分割承载或接收到所述基站 发送的需要上报额外緩冲区报告的通知， 向所述基站发送所述无线承载的緩 冲区状态报告 BSR;所述 BSR携带所述数据无线承载的緩冲数据大小信息和 额外緩冲数据大小信息。
11、 根据权利要求 10所述上报緩冲区状态的装置， 还包括接收模块， 其 中，
所述接收模块设置为： 接收所述基站发送的上行授权信息； 所述上行授 权信息是所述基站根据所述 BSR和发送规则确定的。
12、 根据权利要求 10所述上报緩冲区状态的装置， 其中， 当所述无线承 载同时存在分割承载和非分割承载时， 所述额外緩冲数据大小信息为所述无 线承载中各分割承载对应的分组数据汇聚 PDCP层的总緩冲数据大小信息； 当所述无线承载均为所述分割承载时， 所述额外緩冲数据大小信息为分组数 据汇聚 PDCP层或无线链路控制 RLC层的总緩冲数据大小信息。
13、 根据权利要求 12所述上报緩冲区状态的装置， 其中， 所述緩冲数据 大小信息为所述緩冲数据大小对应的索引值； 所述总緩冲数据大小信息为所 述总緩冲数据大小对应的索引值。
14、 一种接收緩冲区状态的装置， 包括接收模块， 其中，
所述接收模块， 设置为接收终端发送的数据无线承载的緩冲区状态报告 BSR, 所述 BSR携带所述数据无线承载的緩冲数据大小信息， 或者所述 BSR 携带所述无线承载的緩冲数据大小信息和额外緩冲数据大小信息。
15、 根据权利要求 14所述接收緩冲区状态的装置， 还包括发送模块， 其 中， 所述发送模块， 设置为根据所述 BSR和发送规则确定上行授权信息， 并 向终端发送所述上行授权信息。
16、 根据权利要求 14所述接收緩冲区状态的装置， 其中， 所述额外緩冲 数据大小信息为所述无线承载中各分割承载对应的分组数据汇聚 PDCP层的 緩冲数据大小信息或无线链路控制 RLC层的緩冲数据大小信息。
17、 根据权利要求 14所述接收緩冲区状态的装置， 其中， 所述发送规则 由所述基站与除此基站外的其他基站预先协商确定， 或在接收到所述 BSR后 再与所述其他基站协商确定。
18、 根据权利要求 14所述接收緩冲区状态的装置， 其中， 所述发送规则 是： 不同基站发送的所述 PDCP层的緩冲区数据的分配比例。
PCT/CN2014/078934 2014-03-21 2014-05-30 一种上报和接收缓冲区状态的方法和装置 WO2015139373A1 (zh)

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CN104936296A (zh) 2015-09-23
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JP2017509260A (ja) 2017-03-30
US20170127315A1 (en) 2017-05-04
EP3122138A4 (en) 2017-04-05
JP6438044B2 (ja) 2018-12-12
US10091687B2 (en) 2018-10-02

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