WO2012155491A1 - Procédé, dispositif et station de base permettant la commande de la configuration de ressources de canal - Google Patents

Procédé, dispositif et station de base permettant la commande de la configuration de ressources de canal Download PDF

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Publication number
WO2012155491A1
WO2012155491A1 PCT/CN2011/083084 CN2011083084W WO2012155491A1 WO 2012155491 A1 WO2012155491 A1 WO 2012155491A1 CN 2011083084 W CN2011083084 W CN 2011083084W WO 2012155491 A1 WO2012155491 A1 WO 2012155491A1
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WO
WIPO (PCT)
Prior art keywords
control channel
data subcarriers
ofdm
ofdm symbols
symbol
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
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PCT/CN2011/083084
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English (en)
Chinese (zh)
Inventor
鲁照华
刘锟
宁迪浩
段灿
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ZTE Corp
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ZTE Corp
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Publication of WO2012155491A1 publication Critical patent/WO2012155491A1/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
    • 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
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a control channel resource configuration method, a configuration apparatus, and a base station.
  • the base station transmits control information to the terminal (station) through the control channel
  • the control information includes one or more of the following information: downlink resource allocation information, uplink resource allocation information, modulation coding
  • the method the parameter information related to the multiple input multiple output antenna technology, the feedback channel resource allocation information, the feedback channel index allocation information, and the like, and the terminal performs related operations according to the control information.
  • OFDM Orthogonal Frequency Division Multiplexing
  • Table 1 One OFDM symbol includes 256 subcarriers in the frequency domain, where the data subcarrier 224 There are 6 phase tracking pilot subcarriers and 26 virtual subcarriers (protection subcarriers).
  • the Control Channel (CCH) area contains several control channels.
  • each control channel occupies 72 subcarriers and transmits 72 bits of information content.
  • Table 2 shows 72 bits when transmitting uplink and downlink scheduling information in the control channel. Corresponding meanings (other information can be transmitted on 72 bits, and will not be described here).
  • BitMap indicates CQI
  • this transmission is 3 streams MU-MIM0
  • this transmission is 4 streams
  • this transmission is 5 streams MU-MIM0
  • this transmission is 6 streams, indicating the number of columns of the feedback matrix MU-MIM0
  • this transmission is 7 streams MU-MIM0
  • ⁇ -b 52 indicates resources for signaling and feedback transmission within the user resource
  • One OFDM symbol in the system contains 224 available data subcarriers, so one OFDM symbol can contain up to three control channels while leaving 8 subcarriers.
  • the system generally uses the resource allocation mode of time division multiple access, that is, the uplink or downlink resources obtained by the terminal are generally integer multiples of the OFDM symbol, and the remaining 8 subcarriers in each OFDM symbol are generally not allocated.
  • the terminal is used for data transmission;
  • when a plurality of consecutive OFDM symbols are allocated for use by the control channel for example, when 8 consecutive OFDM symbols are allocated for use by the control channel, a total of 64 subcarriers cannot be used.
  • this design imposes a very large limitation on the flexibility of the system's scheduling, and also brings complexity to the design of the terminal's power consumption and cache. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a control channel resource configuration method and a configuration device, which can improve the subcarrier utilization of the OFDM symbol and/or ensure that the control channel resource allocation does not need to cross OFDM symbols.
  • the present invention provides a control channel resource configuration method, including: when an OFDM symbol has a number of data subcarriers available in the frequency domain, M is allocated N data subcarriers for each control channel. Where M and N are positive integers, N is less than or equal to M, and N is able to divide M.
  • the control channel is modulated by means of two-phase phase shift keying or intersecting phase shift keying.
  • the coding rate of the control channel is the ratio of Y to X, Y and X are both positive integers, Y is less than or equal to X, and the product of N and Y can be divisible by X.
  • the present invention also provides a method for configuring a control channel resource.
  • M the number of data subcarriers available in the frequency domain of one OFDM symbol
  • G the number of OFDM symbols allocated for the control channel
  • the number of OFDM symbols allocated by the channel determines the usage of the remaining X data subcarriers on each OFDM symbol used for transmitting the control channel, where M and N are positive integers, and N is less than or equal to M.
  • X is the remainder obtained by dividing M by N, and G is a positive integer.
  • the foregoing method may further have the following features:
  • the step of using the remaining X data subcarriers on each OFDM symbol of the channel includes: N is a product of X and Y, Y is a positive integer, and the value of the G is not Y. All the data subcarriers of the first GS OFDM symbols in the G OFDM symbols are used to transmit the data channel signal, and the remaining X data substrings in the last S OFDM symbols of the G OFDM symbols are configured. No content is transmitted on the carrier or used to transmit the pilot signal, where S is the remainder of G divided by Y.
  • the above method may also have the following features:
  • the steps of using the remaining X data subcarriers on each OFDM symbol of the channel include: N is the product of X and Y, Y is a positive integer, and the value of the G is Y.
  • An integer multiple of the X data subcarriers remaining on each OFDM symbol is used to transmit a control channel signal.
  • the above method may also have the following features:
  • the step of using the remaining X data subcarriers on each OFDM symbol of the channel further includes: a data subcarrier on the upper side.
  • the present invention further provides a method for configuring a control channel resource, where an OFDM symbol allocates N data subcarriers for each control channel when the number of data subcarriers available in the frequency domain is M.
  • the remaining X data subcarriers in each OFDM symbol configured for the control channel are not transmitted or used to transmit a pilot signal, where M and N are positive integers, N is less than or equal to M, and M cannot be N. Divisible, X is the remainder of M divided by N.
  • the present invention further provides a method for configuring a control channel resource, where an OFDM symbol allocates N data subcarriers for each control channel when the number of data subcarriers available in the frequency domain is M.
  • Z OFDM symbols are set for the control channel, and the product of M and Z can be divisible by N, where M, N, and Z are positive integers, and N is less than or equal to M.
  • the present invention further provides a method for configuring a control channel resource, wherein, when the number of data subcarriers available in the frequency domain of one OFDM symbol is M, N data subcarriers are allocated for each control channel, and Z is set for the control channel.
  • the OFDM symbols use data subcarriers on the Z OFDM symbols according to a pre-frequency domain back time domain or a first time domain post-frequency domain, where M, N, and Z are positive integers.
  • the base station notifies the terminal of the number of OFDM symbols set for the control channel through the system information channel.
  • M is 224 and the value of N is 74.
  • the present invention provides a control channel resource configuration apparatus, the configuration apparatus comprising a configuration unit; the configuration unit being configured to configure a control channel resource according to the method described above.
  • the present invention also provides a base station including the above-described control channel resource configuration apparatus.
  • the scheme can improve the subcarrier utilization of the OFDM symbol, ensure that the control channel resource allocation does not need to cross the OFDM symbol, and reduce the terminal power consumption and the terminal implementation complexity.
  • FIG. 1 is a schematic diagram of a method for configuring a control channel resource in Embodiment 1;
  • FIG. 2 is a schematic diagram of a method for configuring a control channel resource in Embodiment 2;
  • Embodiment 3 is a schematic diagram of using data subcarriers in a specific example of Embodiment 2;
  • FIG. 4 is a schematic diagram of a method for configuring a control channel resource in Embodiment 3;
  • 5 is a schematic diagram of a method for configuring a control channel resource in Embodiment 4; 6 is a schematic diagram of a method for configuring a control channel resource in Embodiment 5;
  • the control channel resource configuration method includes: when one OFDM symbol has a number of data subcarriers available in the frequency domain, each data channel is allocated N data subcarriers, where M and N are A positive integer, N is less than or equal to M, and N is a positive integer that can divide M.
  • the control channel is modulated by means of Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK).
  • BPSK Binary Phase Shift Keying
  • QPSK Quadrature Phase Shift Keying
  • the coding rate of the control channel is a ratio of Y to X, Y and X are both positive integers, and Y is less than or equal to X.
  • the product of N and Y can be divisible by X.
  • the base station notifies the terminal of the number of OFDM symbols set for the control channel through the system information channel.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224, and the number of subcarriers N for each control channel is 56. N can divide M.
  • the number of OFDM symbols occupied by the control channel region is notified to the terminal by the system through a system information channel located before the control channel.
  • each control channel can carry 28 bits of data.
  • each control channel can carry 56 bits of data.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 222, and the number of subcarriers N for each control channel is 74. N can divide M.
  • the number of OFDM symbols occupied by the control channel region is notified to the terminal by the system through a system information channel located before the control channel.
  • each control channel can carry 37 bits of data.
  • control channel When the control channel is QPSK 1/2, the control channel can carry 74 bits of data.
  • the control channel resource configuration method includes: when an OFDM symbol has a number of data subcarriers available in the frequency domain, M is allocated N data subcarriers for each control channel, and OFDM symbols allocated for the control channel.
  • the number of G is determined according to the number G of OFDM symbols allocated for the control channel, and the manner of using the remaining X data subcarriers on each OFDM symbol of the control channel is determined, where M, N All are positive integers, N is less than or equal to M, X is the remainder obtained by dividing M by N, and G is a positive integer.
  • For transmitting a data channel signal configuring no remaining content on the X data subcarriers remaining on the last S OFDM symbols of the G OFDM symbols or for transmitting a pilot signal, where S is G divided by Y The remainder.
  • the remaining X data subcarriers are used to transmit control channel signals.
  • the remaining X*Y*Z data subcarriers on the Y*Z OFDM symbols are used to transmit the control channels.
  • Data subcarriers on OFDM symbols are used to transmit the control channels.
  • the base station notifies the terminal of the number of OFDM symbols set for the control channel through the system information channel.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224
  • the number N of subcarriers occupied by each control channel is 72
  • the number of remaining subcarriers of each OFDM X is The remainder (224, 72) is 8, and the usage of the remaining 8 data subcarriers on each OFDM symbol used to transmit the control channel is determined according to the number G of OFDM symbols allocated for the control channel.
  • N is the product of X and Y, that is, the value of Y is 9.
  • the control channel uses the data subcarriers on the 9*Z OFDM symbols in a manner of a pre-frequency domain back time domain ((a) in Fig. 3) or a pre-frequency domain back time domain.
  • the number of OFDM symbols allocated for the control channel is notified by the system to the terminal via a system information channel located before the control channel.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224
  • the number N of subcarriers occupied by each control channel is 72
  • the number of remaining subcarriers of each OFDM X is The remainder (224, 72) is 8, and the usage of the remaining 8 data subcarriers on each OFDM symbol used to transmit the control channel is determined according to the number G of OFDM symbols allocated for the control channel.
  • N is the product of X and Y, that is, the value of Y is 9.
  • G is not an integer multiple of Y
  • the remainder of G obtained by dividing Y by Y is 3, and then the remaining 8 data for each OFDM symbol for transmitting the control channel are configured.
  • No content is transmitted on the subcarriers or used to transmit pilot signals.
  • G is 11, the remainder of the value of S divided by Y is 2, and all data subcarriers used for transmitting the first 9 OFDM symbols of the control channel are used to transmit a data channel. (b)), no content is transmitted on the remaining 8 data subcarriers on each OFDM symbol on the last two OFDM symbols or used to transmit pilot signals.
  • the control channel uses the remaining 8*9*Z data subcarriers on the 9*Z OFDM symbols to transmit Z control according to the pre-frequency domain post-time domain manner ((b) in FIG. 3) channel.
  • the number of OFDM symbols allocated for the control channel is notified by the system to the terminal via a system information channel located before the control channel.
  • the control channel resource configuration method includes: when an OFDM symbol has a number of data subcarriers available in the frequency domain, M is allocated N data subcarriers for each control channel, and is configured as each of the control channel settings.
  • the remaining X data subcarriers in the OFDM symbol do not transmit any content or are used to transmit pilot signals, where M and N are positive integers, N is less than or equal to M, and M is a positive integer that cannot be divisible by N, and X is The remainder obtained by dividing M by N.
  • the base station notifies the terminal of the number of OFDM symbols set for the control channel through the system information channel.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224
  • the number N of subcarriers occupied by each control channel is 72
  • the number of remaining data subcarriers X is a remainder. (224, 72) is 8, then no content is transmitted on the remaining 8 data subcarriers on each OFDM symbol used to transmit the control channel or used to transmit pilot signals.
  • the number of OFDM symbols allocated for the control channel is notified by the system to the terminal via a system information channel located before the control channel.
  • the control channel resource configuration method includes: when an OFDM symbol has a number of data subcarriers available in the frequency domain, M is allocated N data subcarriers for each control channel, and Z OFDM is set for the control channel. Symbol, the product of M and Z can be divisible by N, where M, N, and Z are positive integers, and N is less than or equal to M.
  • the base station notifies the terminal of the number of OFDM symbols set for the control channel through the system information channel.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224, and each control channel occupies 72 subcarriers N, corresponding to an integer multiple of 9 used to transmit the control channel. OFDM symbol.
  • the control channel resource configuration method includes: when an OFDM symbol has a number of data subcarriers available in the frequency domain, M is allocated N data subcarriers for each control channel, and Z OFDM is set for the control channel.
  • the symbol, the data subcarriers on the Z OFDM symbols are used according to a pre-frequency domain back time domain or a first time domain post-frequency domain, where M, N, and Z are positive integers.
  • the number M of data subcarriers available for one OFDM symbol in the frequency domain is 224, and each control channel occupies 72 subcarriers N for transmitting 8 OFDM symbols of the control channel. Then, the control channel uses the data subcarriers on the 8 OFDM symbols according to the pre-frequency domain post-time domain "Z-type" mode ((a) in FIG. 7), in this manner, at the 8th OFDM There will be 64 data subcarriers on the symbol that are not used by the control channel.
  • the number of OFDM symbols allocated for the control channel is located by the system through the control
  • the system information channel before the channel informs the terminal.
  • the number of data subcarriers available for one OFDM symbol in the frequency domain is 224, and each control channel occupies 72 subcarriers for transmitting 8 OFDM symbols of the control channel.
  • the control channel uses the data subcarriers on the 8 OFDM symbols in a first-time domain post-frequency domain "Z-shape" manner ((b) in FIG. 7).
  • the number of OFDM symbols allocated for the control channel is notified by the system to the terminal via a system information channel located before the control channel.
  • the control channel resource configuration apparatus includes a configuration unit; the configuration unit is configured to configure the control channel resource according to the method described in the above implementation.
  • the number of data subcarriers may also be 64, 128, 256, 512, 1024, etc., that is, the power of 2, the relationship between the digital subcarrier index and the actual physical subcarrier index. It depends on the subcarrier mapping mode of the actual system, and will not be described here.
  • the method provided by the embodiment of the present invention is suitable for a system using OFDM technology, for example, the TC5-WG3-2011-015-Wireless Local Area Network Technical Requirements for High Spectrum Utilization and High Data Throughput, which is being developed in China - Part 2 - Enhanced Super high speed wireless LAN MAC layer and PHY layer "standard text.
  • Embodiments of the present invention can improve the subcarrier utilization of OFDM symbols, ensure that control channel resource allocation does not need to cross OFDM symbols, and reduce terminal power consumption and terminal implementation complexity.

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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 permettant la commande de la configuration de ressources de canal. Ledit procédé se déroule de la manière suivante : lorsque le nombre de sous-porteuses de données disponibles pour un symbole de multiplexage par répartition orthogonale de la fréquence (OFDM) dans un domaine fréquentiel est M, N sous-porteuses de données sont distribuées à chaque canal de commande, M et N étant tous deux des entiers positifs, N étant inférieur ou égal à M et M étant divisible par l'entier positif N. La solution apportée par l'invention améliore le taux d'utilisation des sous-porteuses du symbole OFDM, garantit que la commande de la distribution des ressources de canal ne nécessite pas le croisement du symbole OFDM, et réduit la consommation d'énergie du terminal ainsi que sa complexité de réalisation.
PCT/CN2011/083084 2011-08-08 2011-11-28 Procédé, dispositif et station de base permettant la commande de la configuration de ressources de canal Ceased WO2012155491A1 (fr)

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CN201110225647.0 2011-08-08
CN201110225647.0A CN102264136B (zh) 2011-08-08 2011-08-08 一种控制信道资源配置方法及配置装置

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CN106793137B (zh) 2016-08-05 2018-11-27 北京展讯高科通信技术有限公司 通信控制方法及装置
CN107920389B (zh) * 2016-10-07 2020-06-30 上海朗帛通信技术有限公司 一种ue、基站中的资源映射调整的方法和装置
CN113316252B (zh) * 2020-02-27 2025-02-18 北京新岸线移动多媒体技术有限公司 一种无线通信系统中实现频域复用的方法及装置

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