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WO2012058949A1 - Procédé et dispositif de signalement d'un rapport d'état de mémoire tampon - Google Patents

Procédé et dispositif de signalement d'un rapport d'état de mémoire tampon Download PDF

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Publication number
WO2012058949A1
WO2012058949A1 PCT/CN2011/077582 CN2011077582W WO2012058949A1 WO 2012058949 A1 WO2012058949 A1 WO 2012058949A1 CN 2011077582 W CN2011077582 W CN 2011077582W WO 2012058949 A1 WO2012058949 A1 WO 2012058949A1
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WIPO (PCT)
Prior art keywords
bsr
feedback
subframe
comp
logical channel
Prior art date
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Ceased
Application number
PCT/CN2011/077582
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English (en)
Chinese (zh)
Inventor
贺抗生
王文焕
录显明
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • the present invention relates to a wireless communication system
  • the other 1 J Laid relates to LTE-A (Long Term Evolution- Advance , advanced long-term evolution) system
  • LTE-A Long Term Evolution- Advance , advanced long-term evolution
  • UE User Equipment, user equipment
  • CoMP Coordinatd Multipoint Transmission
  • CoMP technology can be divided into two types: JP (Joint Process) and CS/CB (Coordinated Scheduling/Coordinated Beamforming). Both types of multi-point cooperation technologies require channels for UE feedback. Status information is supported.
  • the UE feedback schemes that are most concerned in the current 3GPP conference are divided into two types: explicit feedback (Explicit feedback) and implicit feedback (implicit feedback).
  • the explicit feedback refers to the correlation matrix of the frequency domain channel response information or the frequency domain channel information after the user observes the channel condition, and does not perform any processing on the information, and directly feeds back to the base station, so that the base station obtains complete channel response information.
  • Implicit feedback means that after the channel condition is observed, the user processes the obtained channel response information and converts it into a specific quantized value and feeds back to the base station, such as CQI (Channel Quality Indicator) and PMI (Precoding Matrix Indicator, Precoding matrix indication) and so on.
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator, Precoding matrix indication
  • the feedback in the LTE (Long Team Evolution) system R8 (Release 8) standard includes two types, one is periodic feedback transmitted on the PUCCH (Physical Uplink Control Channel), and the other is Is on PUSCH ( Physical Uplink).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink
  • the aperiodic feedback transmitted on the Shared Channel, the physical uplink shared channel, is implicit feedback.
  • Explicit feedback will inevitably lead to better performance gains.
  • the overhead brought to the system will be relatively large, but as the business needs continue to grow and The constant demand for performance improvement, explicit feedback is still a feedback method worthy of attention.
  • the existing LTE system performs uplink scheduling on different UEs.
  • the uplink scheduling process mainly includes the following steps:
  • Step 1 The UE sends an uplink scheduling information report to the network side, and the uplink scheduling information report mainly includes a BSR (Buffer Status Reports).
  • BSR Buffer Status Reports
  • Step 2 The network side allocates resources to the UE according to a certain policy according to the resource usage situation and the uplink scheduling information of all UEs, and generates uplink authorization information of the UE.
  • Step 3 The network side sends the authorization to the UE.
  • Step 4 The UE sends data and control information according to the uplink grant.
  • the BSR MAC (Media Access Control) control unit in the R8 standard can be divided into a short BSR MAC control unit and a long BSR MAC control unit.
  • Figure 1 shows the R8 standard.
  • Medium and short BSR MAC control unit including two domains, LCG ID (Logic Channel Identity) domain and Buffer Size (Buffer Size Indicator Domain)
  • Figure 2 is the R8 standard long BSR MAC control unit, including four The fields, that is, Buffer Size#0, Buffer Size#l, Buffer Size#2, Buffer Size#3, correspond to four logical channel groups, respectively. If only one logical channel group of the UE has data to transmit, the UE reports a short BSR. If there is more than one logical channel group in the buffer area of the UE, the UE reports the long BSR.
  • the main purpose of the present invention is to provide a method for reporting BSR feedback of a buffer status report, so as to solve the problem of reporting a feedback data cache in the UE BSR explicit feedback process, and further ensuring uplink resource authorization when the UE feeds back.
  • a buffer status report BSR feedback method including:
  • the network side configures the UE to be an explicit feedback mode, and performs measurement of the channel information at the physical layer of the UE and sends the measurement result to the MAC layer.
  • the UE reports the BSR to the network side according to the amount of the logical channel data.
  • the measurement of the channel information includes: channel state information of the current cell and interference information of the neighboring cell to the UE of the local cell.
  • the reported BSR includes: a coordinated multi-point transmission CoMP BSR and a BSR in the LTE R8 standard; and the CoMP BSR includes a short CoMP BSR and a long CoMP BSR.
  • the reporting the BSR by the UE to the network side includes: configuring, by the network side, the subframe n and the feedback period of the UE to feed back COMP channel information data; if in the subframe nk If more than one logical channel group data needs to be sent, the UE reports the long CoMP BSR in the subframe nk; if only one logical channel group data needs to be transmitted at the subframe nk, or four of the logical channel groups If no data needs to be sent, the UE reports the short CoMP BSR in the subframe nk; if more than one logical channel group data needs to be transmitted in other subframes except the subframe nk, the UE is The current subframe reports the long BSR in the LTE R8 standard; if only one logical channel group data needs to be transmitted in other subframes except the subframe nk, the short subframe BSR in the LTE R8 standard is reported in the current subframe UE. .
  • the method further includes: controlling the feedback time by the network side signaling and reporting the BSR according to the step of periodic feedback.
  • the short CoMP BSR includes two bytes: the first byte is a short BSR in the LTE R8 standard, and the logical channel group indicates the LCG ID field and the Buffer Size #0 field; the second byte includes the R domain and the Buffer.
  • the Size#1 field the R domain occupies two bits, and the Buffer Size#1 field occupies six bits, and is used to indicate the size of the channel information feedback data amount;
  • the long CoMP BSR includes four bytes: first, second The three-byte is the long BSR in the LTE R8 standard, including: Buffer Size#0 domain, Buffer Size#l domain, Buffer Size#2 domain, and Buffer Size#3 domain, each domain occupies six bits, respectively corresponding logic The channel group ID; the fourth byte includes the R domain and the Buffer Size #4 domain, the R domain occupies two bits, and the Buffer Size #4 field occupies 6 bits, and is used to indicate the size of the channel information feedback data amount.
  • the method further includes: determining, by the network side, the BSR type of the ⁇ , the size and feedback of each logical channel group buffer area on the UE by using the logical channel ID in the BSR
  • the channel state information data volume size is completed, and the configuration of the uplink resource of the UE is completed; the UE creates a data encapsulating unit MAC PDU in the corresponding uplink subframe according to the configuration of the uplink resource, and the channel information data is in physical
  • the layer is mapped to the physical uplink shared channel PUSCH for transmission.
  • a buffer status report BSR feedback apparatus including:
  • the reporting module is configured to report the BSR of the UE to the network side, and the uplink resource configuration module is configured to use the BSR reported by the reporting module
  • the transmitting module is configured to transmit channel information data on the PUSCH according to the uplink resource configured in the uplink resource configuration module.
  • the channel information measured in the measurement module includes: channel information of the current cell and interference information of the neighboring cell to the UE.
  • the upper module further includes: a configuration unit, configured to configure a feedback period
  • the determining unit is configured to determine the type of the reported BSR
  • the sending unit is configured to send the BSR of the UE to the network side according to the result in the determining unit.
  • the uplink resource configuration module completes configuration of the UE uplink resource according to the reported BSR type, the size of each logical channel group buffer area, and the amount of channel state information data that is fed back.
  • the transmission module further includes: a creating unit, configured to create a MAC PDU in a corresponding uplink subframe according to the configured uplink resource of the UE; and a mapping unit, configured to map the channel information data to the PUSCH at a physical layer Transfer on.
  • the feedback method and device provided by the present invention solves the problem that the channel state information is cached and reported in the feedback process of the UE, so that the eNB obtains the channel state information that the UE needs to feedback in real time, and then performs uplink resource authorization on the UE to ensure explicit feedback. Successful completion. In addition, it ensures the smooth progress of multi-point collaboration and improves the user experience of users at the edge of the cell.
  • FIG. 1 is a schematic diagram showing the structure of a short BSR and a truncated BSR MAC control unit in the prior art R8 standard;
  • FIG. 2 is a schematic diagram showing the structure of a long BSR and a truncated BSR MAC control unit in the prior art R8 standard;
  • FIG. 3 is a schematic diagram showing a feedback flow of the present invention.
  • FIG. 4 is a schematic diagram of a short CoMP BSR MAC control unit of the present invention.
  • Figure 5 is a schematic diagram of a long CoMP BSR MAC control unit of the present invention.
  • FIG. 6 is a schematic diagram of a MAC PDU subheader corresponding to a CoMP BSR MAC control unit of the present invention.
  • FIG. 7 is a schematic structural diagram of an FDD frame of an embodiment
  • FIG. 8 is a schematic structural diagram of a TDD subframe configuration 1 frame
  • FIG. 9 is a schematic structural view of a display feedback device of the present invention.
  • FIG. 10 is a schematic diagram showing the optimized structure of the display feedback device of the present invention. detailed description
  • the basic idea of the present invention is: the network side configures the UE to be an explicit feedback mode, completes the measurement of the channel information at the physical layer of the UE, and sends the measurement result to the MAC layer; the UE reports the BSR to the network side according to the amount of the logical channel data. .
  • a buffer status report BSR feedback method is provided. As shown in FIG. 3, the method includes:
  • Step S101 The network side configures the UE to be an explicit feedback mode, completes measurement of channel information at the physical layer of the UE, and sends the measurement result to the MAC layer.
  • Step S102 The UE reports the BSR to the network side according to the logical channel data amount.
  • the problem of the channel state information cache reporting in the UE feedback process is solved, so that the eNB obtains the channel state information amount that the UE needs to feedback in real time, and then performs uplink resource authorization on the UE to ensure the smooth completion of the explicit feedback. In addition, it ensures the smooth progress of multi-point collaboration and improves the user experience of users at the edge of the cell.
  • the measurement of the channel information in step S101 includes: channel state information of the current cell and interference information of the neighboring cell to the local cell UE.
  • the foregoing BSR includes: a coordinated multi-point transmission CoMP BSR and a BSR in the LTE R8 standard; and the foregoing CoMP BSR includes a short CoMP BSR and a long CoMP BSR.
  • Step S102 can be implemented as follows: if the explicit feedback mode is periodic, The steps of the UE to the BSR on the network side include:
  • the network side configures the subframe n and the feedback period of the UE feedback COMP channel information data
  • the UE If more than one logical channel group data needs to be transmitted at the subframe n-k, the UE describes the long CoMP BSR in the subframe n-k;
  • the UE reports the short CoMP BSR in the subframe nk; if the subframe nk is excluded If the other subframes have more than one logical channel group data to be sent, the UE reports the long BSR in the LTE R8 standard in the current subframe.
  • the short BSR in the LTE R8 standard is reported in the current subframe UE.
  • the network side signaling controls the feedback time and reports the BSR according to the step of periodic feedback.
  • the short CoMP BSR includes two bytes: the first byte is a short BSR in the LTE R8 standard, and includes a logical channel group identifier LCG ID field and a Buffer Size #0 field; The R domain and the Buffer Size #1 field, the R domain occupies two bits, and the Buffer Size #1 field occupies six bits, and is used to indicate the amount of data feedback of the channel information. As shown in FIG. 4,
  • the long CoMP BSR includes Four bytes:
  • the first, second, and third bytes are long BSRs in the LTE R8 standard, including: Buffer Size#0 field, Buffer Size#1 field, Buffer Size#2 field, and Buffer Size#3 field, each The domain occupies six bits, corresponding to the logical channel group ID; the fourth byte includes the R domain and the Buffer Size #4 domain, the R domain occupies two bits, and the Buffer Size #4 field occupies 6 bits, and is used to indicate the channel information. The amount of feedback data.
  • the network side determines, by using the logical channel ID in the BSR, the BSR type reported by the UE, the size of each logical channel group buffer area, and the amount of channel state information data that is fed back.
  • Configuration of uplink resources wherein, the network side can Obtaining a logical channel ID by parsing a MAC PDU sub-header; the UE creates a data encapsulating unit MAC PDU in a corresponding uplink subframe according to the configuration of the uplink resource, and maps the channel information data to a physical uplink shared channel PUSCH at a physical layer. Transfer on.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • any uplink subframe in the frame structure can feed back channel information.
  • the network side configures the feedback period of the UE by the high-layer signaling to be 10 milliseconds, and the PHY layer (physical layer) of the UE performs channel information measurement in the subframe n and reports the measurement result to the UE.
  • the UE sends a BSR in the uplink subframe nk of each frame.
  • n selects 8 and k selects 4, that is, the PHY layer of the UE performs channel information measurement in the subframe 8 and reports the measurement result to the UE.
  • the MAC layer the UE sends a BSR in the uplink subframe 4 of each frame, and the type of the BSR is determined according to the state of the buffer area. If the buffer area at the subframe 4 has only one logical channel group data and channel state information data that needs to be fed back,
  • the short CoMP BSR reported by the UE, the logical channel ID of the short CoMP BSR in the present invention may be set to 11000. If there is more than one logical channel group data in the buffer area at the subframe 4 and the feedback channel state information data needs to be sent, the UE
  • the long CoMP BSR is reported, and the logical channel ID of the long CoMP BSR can be set to 11001.
  • the network side determines how to perform uplink resource authorization according to the received BSR type. If the logical channel ID corresponding to the BSR received by the network side is 11000, it indicates that the UE is a short CoMP BSR, and the network side is based on the Buffer Size of the short CoMP BSR.
  • the #1 field obtains the size of the feedback data, and performs uplink resource authorization on the UE during scheduling. If the logical channel ID corresponding to the BSR received by the network side is 11001, the UE reports the long CoMP BSR, and the network side according to the present invention Long
  • the Buffer Size #4 field in the CoMP BSR obtains the size of the feedback data, and performs uplink resource authorization on the UE during scheduling.
  • the UE creates a MAC PDU according to the priority of the logical channel in the uplink subframe 8 according to the uplink resource authorized by the network side, and the logical channel ID of the channel state information data transmission may be set to 10111, and the logical channel is mapped to the UL-SCH transmission of the PUSCH. .
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment considers the frame structure of the TDD system.
  • the uplink and downlink subframe switching periods of 5 milliseconds and 10 milliseconds are supported.
  • the TDD system includes a 7-seed frame configuration mode, and is now in subframe configuration mode 1, as shown in FIG. To illustrate the specific implementation process of the present invention, other subframe configuration modes have similar processes.
  • the network side configures the feedback period of the UE by the high layer signaling to be 10 milliseconds, and the PHY layer of the UE performs channel information measurement and reports the measurement structure to the MAC layer of the UE, and the UE determines according to the feedback mode and the number of cells that need to feed back the channel state.
  • the logical channel ID of the short CoMP BSR can be set to 11000. If there is more than one logical channel group data and the feedback channel state information data needs to be sent in the UE buffer area at this time, the UE reports the long CoMP BSR, and the logic of the long CoMP BSR.
  • the channel ID can be set to 11001. For other subframes in the 10 millisecond period, if there is more than one logical channel group currently having data to send, report the long BSR in LTE R8. If there is only one logical channel group in the current subframe, the data needs to be sent, and then report to LTE R8. Short BSR in.
  • the network side determines how to perform uplink resource authorization according to the received BSR type. If the logical channel ID corresponding to the BSR received by the network side is 11000, it indicates that the UE is a short CoMP BSR, and the network side is based on the Buffer Size of the short CoMP BSR. The #1 field is used to obtain the size of the feedback data, and the uplink resource authorization of the UE is scheduled. If the logical channel ID corresponding to the BSR received by the network side is 11001, the UE reports the long CoMP BSR, and the network side according to the long CoMP in the present invention. The Buffer Size #4 field in the BSR obtains the size of the feedback data, and authorizes the uplink resource of the UE during scheduling.
  • the UE creates a MAC PDU according to the priority of the logical channel in the uplink subframe 7 according to the uplink resource grant of the network side, and the logical channel ID of the channel information data transmission can be set to 10111, and the logical channel is mapped to the UL-SCH of the PUSCH for transmission.
  • the present invention further provides a buffer status report BSR feedback device.
  • the display feedback device includes: a measurement module 1, a reporting module 2, an uplink resource configuration module 3, and a transmission module 4. The above results are described in detail below.
  • the measurement module 1 is configured to measure channel information and send the foregoing measurement result to the MAC entity;
  • the reporting module 2 is connected to the measurement module 1 for reporting the BSR of the UE side to the network side; and the uplink resource configuration module 3 is connected to the reporting module 2 And configured to complete the configuration of the uplink resource of the UE according to the BSR reported by the reporting module;
  • the transmission module 4 is connected to the uplink resource configuration module 3, configured to transmit channel information on the PUSCH according to the uplink resource configured in the foregoing uplink resource configuration module. data.
  • the display feedback device comprises the following structure:
  • the reporting unit 2 includes: a configuration unit 201, configured to configure a feedback period and a subframe n of the UE to feed back COMP channel information data; a determining unit 202, configured to determine a type of the reported BSR, and a sending unit 203, configured to be used according to the determining unit The result is that the UE's BSR is 4 ⁇ to the network side.
  • the transmission module 4 includes: a creating unit 401, configured to create a MAC PDU in a corresponding uplink subframe according to the foregoing UE uplink resource, and a mapping unit 402, configured to map the channel information data to the PUSCH at a physical layer.
  • any one of the uplink subframes in the frame structure can be used for feedback.
  • the measurement of the channel information is completed in the measurement module 1 and the measurement result is reported to the UE through the subframe 8.
  • the configuration unit 201 of the reporting module 2 configures a feedback period and a subframe in which the UE feeds back the COMP channel information data, where the feedback period is set to 10 milliseconds, and the UE feeds back the COMP channel information data to the subframe 4; Determining, according to the UE buffer type and the channel state information data that needs to be fed back, the transmission type of the BSR that needs to be reported; sending, in the sending unit 203, the appropriate BSR to the uplink resource configuration module 3, and configuring the logical channel ID in the corresponding BSR;
  • the uplink resource configuration module 3 determines the authorized uplink resource according to the logical channel ID in the BSR, and sends the authorized uplink resource result to the transmission module 4; in the transmission module 4, the creating unit 401 is configured to perform
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de signalement d'un rapport d'état de mémoire tampon (BSR), le procédé comprenant les étapes suivants : côté réseau, configuration d'un équipement d'utilisateur (UE) dans un mode de signalement explicite, réalisation d'une mesure d'informations de canal sur une couche physique de l'UE, et transmission d'un résultat de mesure à une couche MAC ; et signalement, par l'UE, d'un BSR au côté réseau selon un volume de données de canal logique. L'invention concerne également un dispositif de signalement d'un rapport d'état de mémoire tampon (BSR). Les solutions techniques selon l'invention permettent de remédier au problème du signalement explicite d'un rapport d'état de mémoire tampon par un UE et de garantir l'autorisation des ressources en liaison montante.
PCT/CN2011/077582 2010-11-01 2011-07-25 Procédé et dispositif de signalement d'un rapport d'état de mémoire tampon Ceased WO2012058949A1 (fr)

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CN201010527483.2A CN102457895B (zh) 2010-11-01 2010-11-01 一种缓存区状态报告bsr反馈方法及装置
CN201010527483.2 2010-11-01

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CN108243505B (zh) * 2016-12-26 2021-09-28 中国移动通信集团广东有限公司 一种资源调度方法及装置
US20180192431A1 (en) * 2016-12-29 2018-07-05 Ping Wang Techniques for full duplex wireless communications
CN108574559B (zh) * 2017-03-13 2021-03-30 电信科学技术研究院 一种传输方法和装置
CN107223360B (zh) 2017-04-28 2021-10-08 北京小米移动软件有限公司 一种发送缓存状态的方法及装置
CN107911837B (zh) * 2017-11-24 2021-07-27 北京泰德东腾通信技术有限公司 窄带物联网终端缓存状态报告测试方法和系统
CN112637894B (zh) * 2020-12-18 2023-08-01 京信网络系统股份有限公司 资源配置方法、装置、接入网设备和存储介质
CN116762452A (zh) * 2021-01-13 2023-09-15 富士通株式会社 缓存状态上报的方法、缓存状态上报的配置方法及装置

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CN107295561B (zh) * 2016-04-01 2022-06-21 中兴通讯股份有限公司 资源的申请方法及装置

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