WO2014094267A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2014094267A1
WO2014094267A1 PCT/CN2012/086995 CN2012086995W WO2014094267A1 WO 2014094267 A1 WO2014094267 A1 WO 2014094267A1 CN 2012086995 W CN2012086995 W CN 2012086995W WO 2014094267 A1 WO2014094267 A1 WO 2014094267A1
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WO
WIPO (PCT)
Prior art keywords
rate matching
matching
current
time threshold
selecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/086995
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English (en)
Chinese (zh)
Inventor
钱俊进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2012/086995 priority Critical patent/WO2014094267A1/fr
Priority to CN201280017781.4A priority patent/CN103596638B/zh
Publication of WO2014094267A1 publication Critical patent/WO2014094267A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present invention relates to the field of communications, and in particular, to a communication method and apparatus. Background technique
  • a user equipment (UE) and a base station layer 2 are performed at a base station layer 3 (evolved NodeB Layer 3, eNB L3).
  • CSI-RS Channel State Information-Reference Signals
  • MIMO Multiple Input Multiple Output
  • the embodiment of the invention provides a communication method and device to solve the problem of packet loss in the above scenario.
  • an embodiment of the present invention provides a communication method, where the method includes: acquiring a number of REs, performing rate matching according to the number of REs within a first time threshold; and matching results according to the rate matching, Select the current RE number.
  • an embodiment of the present invention provides a communication method, where the method includes: performing downlink data transmission on a non-MBSFN subframe when performing MIMO mode configuration.
  • an embodiment of the present invention provides a communication device, where the device includes: a matching unit, configured to acquire a RE number, and perform rate matching according to the RE number within a first time threshold, and the rate is The matching matching result is sent to the selection unit;
  • a selecting unit configured to receive the matching result of the rate matching sent by the matching unit, According to the matching result of the rate matching, the current RE number is selected.
  • an embodiment of the present invention provides a communication apparatus, where the apparatus includes: a processing unit, configured to perform downlink data transmission on a non-MBSFN subframe when performing MIM0 mode configuration.
  • an embodiment of the present invention provides a communications apparatus, where the apparatus includes: a network interface;
  • An application physically stored in the memory including instructions operable to cause the processor and the system to perform the following process:
  • an embodiment of the present invention provides a communication device, where the device includes: a network interface;
  • An application physically stored in the memory including instructions operable to cause the processor and the system to perform the following process:
  • FIG. 1 is a schematic diagram of a transient state in a CSI-RS configuration process in an LTE system
  • FIG. 2 is a schematic diagram of a transient state in a process of switching from TM9 to TM3 in a MIM0 system
  • FIG. 3 is a flowchart of a communication method according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a communication device according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram of a communication apparatus according to Embodiment 3 of the present invention.
  • FIG. 6 is a flowchart of a communication method according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram of a communication apparatus according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic diagram of a communication apparatus according to Embodiment 6 of the present invention. detailed description
  • FIG. 1 is a schematic diagram of a transient state in a CSI-RS configuration process in an LTE system.
  • the eNB L3 needs to first perform the CSI-RS configuration by using a Radio Resource Control (RRC) connection re-pairing UE, and at the eNB L3.
  • RRC Radio Resource Control
  • the CSI-RS configuration is performed on the eNB L2 through the internal message of the base station. Therefore, the UE and the eNB L2 have the timing sequence of the CSI-RS configuration.
  • the time period during which the eNB L3 feeds back the CSI-RS configuration complete message to the eNB L2 and feeds back the CSI-RS configuration complete message to the eNB L3 is a transient time period.
  • the UE is in the CSI-RS configuration, and the eNB L2 does not have the CS I-RS configuration.
  • the UE is unpacking the downlink physical shared channel (Physic).
  • the number of resource elements (Resource Element, RE) used is the number of REs deducted by the CSI-RS.
  • the eNB L2 has not yet perceived that the CS I-RS configuration is valid.
  • the number of REs used for transmitting the PDSCH packet is the number of REs without deducting the CS I-RS. Therefore, when the eNB L2 and the UE match the PDSCH rate, the number of REs used is inconsistent, which may cause the PDSCH data packet of the transient period to be correctly parsed.
  • FIG. 2 shows the TM9 to TM3 in the MIM0 system. Transient diagram during handover. As shown in FIG. 2, when the transmission mode 9 (Transmission Mode, TM9) is switched to the transmission mode 3 (Transmission Mode, TM3), the eNB L3 reconfigures the MIMO connection to the UE to configure a new MIMO mode, and the eNB L3 knows that the eNB L2 is below.
  • TM9 Transmission Mode 9
  • TM3 Transmission Mode 3
  • TM3 Transmission Mode 3
  • the downlink control information (Physical Downlink Control Channel, PDCCH) data is transmitted in the format of the downlink control information 1A (Downlink Control Inf or Matt-I, DCI-1A), the UE feeds back the MIMO mode configuration to the eNB L3, and the eNB L3 informs the eNB L2 new.
  • the MIMO mode, and the eNB L2 performs PDCCH data transmission in the DCI format corresponding to the new MIMO mode.
  • the eNB L3 informs the eNB L2 to start transmitting the PDCCH data in the DCI-1A format, and the eNB L3 informs the eNB L2 to the new one.
  • the DC I format corresponding to the MIMO mode performs PDCCH data transmission, and this period of time is called a transient time period.
  • the UE does not receive the PDCCH packet on the Multicast Broadcast Single Frequency Network (MBSFN) subframe after the TM3 is valid. If the UE is in the transient period, the base station The data is still transmitted on the MBSFN subframe, and the PDCCH packet is inevitably lost.
  • MBSFN Multicast Broadcast Single Frequency Network
  • the CSI-RS when the CSI-RS is configured in the LTE system, the number of REs is obtained, and the rate matching is performed according to the number of the REs in the first time threshold; and the current RE number is selected according to the matching result of the rate matching. . Therefore, in some configuration transient processes of LTE, the PDSCH data packet can be correctly parsed by using the correct RE number, and the data packet is not lost due to the inconsistency of the eNB and the UE.
  • downlink data is transmitted on a non-MBSFN subframe. This ensures that the data on the MBSFN subframe will not be lost during the transient process.
  • FIG. 3 is a flowchart of a communication method according to Embodiment 1 of the present invention. As shown in FIG. 3, the method includes:
  • Step 301 Acquire a RE number, and perform rate matching according to the RE number within the first time threshold. Since the time required for rate matching is an integer multiple of the TTI, and the minimum time required for rate matching is 8 TTIs, the first time threshold is a transmission time interval (Transmi ss ion time Interva l , TTI An integer multiple of ) and not less than 8 TTIs.
  • the first time threshold is a transmission time interval (Transmi ss ion time Interva l , TTI An integer multiple of ) and not less than 8 TTIs.
  • Step 302 Select a current RE number according to the matching result of the rate matching.
  • the UE acquires a first RE number that is subtracted from the channel state information reference signal CSI-RS RE, and is within the first time threshold according to the first RE The number is matched by the first rate matching; the UE determines whether the first rate matching is correct; if the matching result of the first rate matching is correct, the first RE number is selected as the current RE number, and no The first RE number deducting the CSI-RS RE number is taken as the current RE number.
  • the UE obtains no deduction of the CSI-RS.
  • the UE determining whether the second rate matching is correct; if the matching result of the second rate matching is correct, selecting the second The RE number is taken as the current RE number, otherwise, the first RE number deducting the CSI-RS RE number is selected as the current RE number.
  • the UE obtains the RE number, performs rate matching according to the RE number within the first time threshold, and selects the current RE number according to the matching result of the rate matching. Therefore, in some configuration transient processes of LTE, the correct RE number can be used to correctly parse the PDSCH data packet, and the data packet is not lost due to the inconsistency of the eNB and the UE.
  • the selecting unit 402 is configured to receive the matching result of the rate matching sent by the matching unit, and select a current RE number according to the matching result of the rate matching.
  • the matching unit 401 is specifically configured to obtain a first RE number that is deducted from the CS I-RS RE number, and perform first rate matching according to the first RE number.
  • the selecting unit 402 is specifically configured to: if the matching result of the first rate matching is correct, select the first RE number as the current RE number; otherwise, select the second RE number that does not deduct the CS I-RS RE number. As the current RE number.
  • the matching unit 401 is specifically configured to obtain a second RE number that does not deduct the CS I-RS RE number, and perform second rate matching according to the second RE number.
  • the matching unit acquires the RE number, and performs rate matching according to the RE number within the first time threshold; the selecting unit selects the current RE number according to the matching result of the rate matching. Therefore, in some configuration transient processes of LTE, the PDSCH data packet can be correctly parsed by using the correct RE number, and the data packet is not lost due to the inconsistency of the state of the eNB and the UE.
  • Network interface 501 is used to communicate with other devices.
  • the time required for performing rate matching is an integer multiple of the TTI, and the minimum time required for performing rate matching is 8 TTIs. Therefore, the first time threshold in the apparatus is a transmission time interval (Transmi). Ss ion Time Interva l , TTI) is an integer multiple, and is not less than 8 TTIs.
  • the application may be configured to enable the processor and the system to perform the acquisition of the RE number, and within the first time threshold, the instruction of performing the rate matching process according to the RE number is: acquiring the CS I-RS RE number without deducting The second RE number is matched according to the second RE number.
  • the application may be configured to: the matching result according to the rate matching, the instruction of selecting a current RE number process is: if the matching result of the second rate matching is correct, selecting the second RE number as the current RE Number, otherwise, the first RE number deducting the CS I-RS RE number is selected as the current RE number.
  • the application acquires the number of REs, performs rate matching according to the number of REs within the first time threshold, and selects the current RE number according to the matching result of the rate matching. Therefore, in some configuration transient processes of LTE, the PDSCH data packet can be correctly parsed by using the correct RE number, and the data packet is not lost due to the parsing failure of the eNB and the UE.
  • the correct parsing of the PDSCH data packet is performed by selecting the correct RE number, thereby solving the problem that the state of the eNB and the UE are inconsistent.
  • the problem that the PDSCH packet parsing failed and the packet was lost.
  • the following embodiments describe a solution and apparatus for the problem of data parsing errors due to inconsistent state of the eNB and the UE during the transient period in the TM9 to TM3 handover process in the MIM0 system.
  • FIG. 6 is a flowchart of a method for processing a transient according to Embodiment 4 of the present invention. As shown in FIG. 6, the method provided by the embodiment of the present invention includes:
  • Step 601 When the MIM0 mode is configured, the downlink data is sent on the non-MBSFN subframe.
  • the eNB when the MIM0 mode reconfiguration is performed, the eNB performs downlink data transmission on the non-MBSFN subframe, and does not perform downlink data transmission on the MBSFN subframe, so that data on the MBSFN subframe is not lost.
  • the eNB when the eNB performs the MIM0 mode configuration, the eNB performs downlink data transmission on the non-MBSFN subframe. This ensures that the data on the MBSFN subframe will not be lost during the transient process.
  • FIG. 7 is a schematic diagram of a transient processing apparatus according to Embodiment 5 of the present invention. As shown in FIG. 7, the apparatus provided by the embodiment of the present invention includes: a processing unit 701.
  • the processing unit 701 is configured to perform downlink data transmission on the non-MBSFN subframe when performing the MIM0 mode configuration.
  • the eNB when the eNB performs the MIM0 mode configuration, the eNB performs downlink data transmission on the non-MBSFN subframe. This ensures that the data on the MBSFN subframe will not be lost during the transient process.
  • FIG. 8 is a schematic diagram of a transient processing apparatus according to Embodiment 6 of the present invention.
  • the apparatus provided by the embodiment of the present invention includes: a network interface 801, a processor 802, and a memory 803.
  • System Bus 804 is used to connect network interface 801, processor 802, and memory 803.
  • Network interface 801 is used to communicate with other devices.
  • the memory 803 can be a persistent storage such as a hard disk drive and a flash memory, and the memory 803 has software modules and device drivers.
  • the software modules are capable of executing the various functional modules of the above described method of the present invention; the device drivers can be network and interface drivers.
  • downlink data is transmitted on the non-MBSFN subframe.
  • the eNB performs the MIM0 mode configuration, the eNB performs downlink data transmission on the non-MBSFN subframe. This ensures that the data on the MBSFN subframe will not be lost during the transient process.

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

Abstract

La présente invention concerne un procédé et un dispositif de communication. Selon l'invention, le procédé fait appel, au cours d'une configuration de signal de référence d'informations d'état de canal (CSI-RS) dans un système d'évolution à long terme (LTE), à l'acquisition d'un nombre d'éléments de ressources (RE) et, sur une première valeur seuil de temps, à l'exécution, conformément au nombre de RE (301), d'une mise en correspondance de débits ; et, conformément à un résultat de correspondance de la mise en correspondance de débits, à la sélection d'un nombre de RE courants (302). Par conséquent, pour certains traitements transitoires de configuration de LTE, un nombre de RE correct peut être utilisé afin d'analyser correctement un paquet de données de canal partagé de liaison descendante physique (PDSCH), et l'on évite la situation dans laquelle, en raison de l'incohérence des états d'équipements utilisateurs (UE) d'eNB, on est confronté à une défaillance d'analyse et, ainsi, à une perte de paquets. Lors de l'exécution d'une configuration de mode à entrées multiples-sorties multiples (MIMO), des données de liaison descendante sont transmises sur une sous-trame de réseau à fréquence de diffusion unique, autre que de multidiffusion(MBSFN) et, par conséquent, on peut garantir que les données sur la sous-trame MBSFN ne seront pas perdues pendant le traitement transitoire.
PCT/CN2012/086995 2012-12-20 2012-12-20 Procédé et dispositif de communication Ceased WO2014094267A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2012/086995 WO2014094267A1 (fr) 2012-12-20 2012-12-20 Procédé et dispositif de communication
CN201280017781.4A CN103596638B (zh) 2012-12-20 2012-12-20 通信方法及装置

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102239649A (zh) * 2008-12-02 2011-11-09 Lg电子株式会社 在下行链路多输入多输出系统中发送参考信号的方法
CN102823167A (zh) * 2010-03-24 2012-12-12 Lg电子株式会社 无线电通信系统中减少小区间干扰的方法和设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101325739A (zh) * 2007-06-14 2008-12-17 北京三星通信技术研究有限公司 传输上行数据和上行控制信令的方法
US9130725B2 (en) * 2010-11-02 2015-09-08 Qualcomm Incorporated Interaction of PDSCH resource mapping, CSI-RS, and muting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102239649A (zh) * 2008-12-02 2011-11-09 Lg电子株式会社 在下行链路多输入多输出系统中发送参考信号的方法
CN102823167A (zh) * 2010-03-24 2012-12-12 Lg电子株式会社 无线电通信系统中减少小区间干扰的方法和设备

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CN103596638A (zh) 2014-02-19

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