WO2011120429A1 - Procédé et appareil d'indication pour configuration de code de recouvrement orthogonal et configuration de saut de fréquence - Google Patents

Procédé et appareil d'indication pour configuration de code de recouvrement orthogonal et configuration de saut de fréquence Download PDF

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Publication number
WO2011120429A1
WO2011120429A1 PCT/CN2011/072285 CN2011072285W WO2011120429A1 WO 2011120429 A1 WO2011120429 A1 WO 2011120429A1 CN 2011072285 W CN2011072285 W CN 2011072285W WO 2011120429 A1 WO2011120429 A1 WO 2011120429A1
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WO
WIPO (PCT)
Prior art keywords
configuration
orthogonal cover
cover code
hopping
frequency hopping
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Application number
PCT/CN2011/072285
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English (en)
Chinese (zh)
Other versions
WO2011120429A9 (fr
Inventor
陈文洪
缪德山
拉盖施
Original Assignee
电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2011120429A1 publication Critical patent/WO2011120429A1/fr
Publication of WO2011120429A9 publication Critical patent/WO2011120429A9/fr

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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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping

Definitions

  • Orthogonal cover code configuration and frequency hopping configuration indication method and device Orthogonal cover code configuration and frequency hopping configuration indication method and device
  • the present invention relates to the field of communications, and in particular, to an orthogonal cover code configuration and a frequency hopping configuration indication method and apparatus. Background technique
  • uplink multi-antenna transmission is introduced, and the terminal can use multiple RF channels to transmit data to achieve higher spectral efficiency.
  • OCC Orthogonal Cover Code
  • OCC can only be used in non-time slot frequency hopping systems. If the cell enables group hopping or sequence hopping, occ cannot be used.
  • group hopping and sequence hopping of each user can be independently configured by signaling of PDCCH, thereby fully utilizing OCC to ensure orthogonality.
  • MIMO Multiple Input Multiple Output
  • MIMO transmission can be implemented in two ways: SU-MIMO (single-user multiple-input multiple-output) and MU-MIMO (multi-user multiple-input multiple-output).
  • SU-MIMO uses spatial multiplexing to transmit multiple data streams of a certain user on the same time-frequency resource;
  • MU-MIMO uses multiple orthogonality between users to send multiple users on the same time-frequency resource. data. Without increasing bandwidth, MIMO technology can multiply the capacity and spectral efficiency of communication systems.
  • the DMRSs of different ports occupy the same time-frequency resource, and the orthogonality of the DMRS sequences ensures that the receiving end can separately estimate the channel of each port.
  • the DMRSs of multiple users occupy the same resources, and the orthogonality of the DMRS sequences is used to ensure that the receiving end can detect each user's respective channel.
  • the OFDMRS sequence For SU-MIMO transmission, if the uplink transmission bandwidth is narrow, the DMRS sequence is very short, this If the number of transmitted data streams is large, the orthogonality between the DMRS sequences is difficult to guarantee. Similarly, in MU-MIMO transmission, if the multiplexed user transmission bandwidth is different, the length of the DMRS sequence is also different, and the orthogonality of the DMRS sequence cannot be guaranteed. At this time, an OCC sequence can be introduced, and two columns of DMRS sequences of different ports are multiplied by different OCC weights to ensure orthogonality of DMRS sequences of different ports, as shown in FIG. 1 .
  • the weighting value configuration of the OCC can only be indicated to the UE by the base station through signaling.
  • part of the DMRS port of the user is weighted by OCC of [1 1] (ie, no OCC weighting is performed), and another part of the DMRS port is weighted by OCC of [1 -1], then the two ports can be It is possible to use OCC to maintain orthogonality. If the user and other users multiplex the MU-MIMO transmission, the two users can use the MU-MIMO respectively.
  • [1 1] and [1 -1] weight each DMRS port to use OCC to guarantee the orthogonality of DMRS between users, even if the bandwidth configured by two users is different.
  • the base station can also disable the user's OCC weighting as needed. Therefore, as long as the OCC weighting value of each DMRS port of each user is properly configured, the orthogonality between DMRS ports of different users or DMRS ports of different users can be maintained, regardless of whether the user is SU-MIMO mode or MU-MIMO mode. .
  • the current group hopping and sequence hopping are cell configuration parameters, and each user cannot be configured separately. Therefore, the cell that enables such frequency hopping cannot use OCC.
  • an object of the present invention is to provide an orthogonal cover code configuration and a frequency hopping configuration indication method and apparatus, to solve at least the above problems, and to achieve the above object, according to the present invention.
  • An aspect of the present invention provides an orthogonal coverage code configuration and a frequency hopping configuration indication method, including: the base station indicates, by signaling, an orthogonal coverage code configuration or a frequency hopping configuration, where the orthogonal coverage code configuration and the location Another configuration in the frequency hopping configuration is bound to it and has a predetermined mapping relationship.
  • an orthogonal cover code configuration and a frequency hopping configuration indication apparatus including: a signaling setting unit, configured to set an orthogonal cover code configuration or a frequency hopping configuration to signaling sent to a terminal And the another configuration of the orthogonal coverage code configuration and the frequency hopping configuration is bound to have a predetermined mapping relationship; and the signaling sending unit is configured to send the set signaling to the terminal.
  • a terminal including: a signaling receiving unit, configured to receive signaling configured with an orthogonal cover code configuration or a frequency hopping configuration, where the orthogonal cover code configuration and the Another configuration in the frequency hopping configuration is bound to the predetermined configuration.
  • the processing unit is configured to determine, according to the orthogonal coverage code configuration or the frequency hopping configuration in the received signaling, how to perform orthogonal cover code weighting. And decide whether to perform group hopping or sequence hopping.
  • the joint indication method and apparatus for the OCC configuration and the frequency hopping configuration of the present invention can indicate the configuration of the frequency hopping while indicating the OCC configuration, improve the flexibility of the OCC utilization, and reduce the signaling overhead by the binding relationship configured by the two. . DRAWINGS
  • 1 is a schematic diagram of introducing orthogonal cover codes for weighting to ensure orthogonality of DMRSs of different ports;
  • FIG. 2 is a flowchart of an orthogonal cover code configuration and a frequency hopping configuration indication method according to an embodiment of the present invention
  • FIG. 3 is an orthogonal cover code configuration and frequency hopping configuration indicating device according to an embodiment of the present invention. Schematic;
  • FIG. 4 is a schematic diagram of a terminal in accordance with an embodiment of the present invention. detailed description
  • the present invention provides a joint indication method and apparatus for OCC configuration and frequency hopping configuration, which uses DCI (downlink control channel signaling) domain or higher layer signaling of a downlink control channel (PDCCH) to indicate uplink OCC configuration or frequency hopping configuration.
  • DCI downlink control channel signaling
  • PDCCH downlink control channel
  • an orthogonal cover code configuration and a frequency hopping configuration indication method in accordance with an embodiment of the present invention.
  • an orthogonal cover code configuration and a frequency hopping configuration indication method according to an embodiment of the present invention include:
  • the base station indicates, by using the signaling, the orthogonal coverage code configuration or the frequency hopping configuration, where the orthogonal coverage code configuration and the other configuration of the frequency hopping configuration are bound to each other, and have a predetermined mapping relationship.
  • the terminal performs orthogonal cover code weighting according to the received orthogonal cover code configuration or a frequency hopping configuration and a predetermined mapping relationship, and determines whether to perform group hopping or sequence hopping.
  • the base station indicates the orthogonal cover code configuration or the frequency hopping configuration to the terminal through the downlink control of the downlink control channel; the QoS or the radio resource control signaling of the terminal.
  • the base station indicates the orthogonal cover code configuration using 2-bit signaling in the downlink control message.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship three all demodulation reference signal ports are weighted by the orthogonal cover code of [1, -1], and group hopping or sequence hopping is not enabled;
  • mapping relationship is four, the orthogonal cover code function is not enabled, and the group hopping and sequence hopping are used for cell configuration.
  • the base station uses the 1-bit signaling in the downlink control message to indicate orthogonal cover code configuration or frequency hopping Set.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is as follows: mapping relationship 1, the group hopping or sequence hopping is not enabled, the orthogonal cover code function is enabled; the mapping relationship 2, the group hopping The frequency and sequence hopping are used in the cell configuration, and the orthogonal cover code function is not enabled.
  • the base station indicates the orthogonal cover code configuration or the frequency hopping configuration by using 1-bit high layer signaling in the radio resource control signaling.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship 1 The group hopping or sequence hopping is not enabled, and the orthogonal cover code function is enabled.
  • mapping relationship 2 group hopping and sequence hopping use the cell configuration, and the orthogonal cover code function is not enabled.
  • the orthogonal cover code configuration and frequency hopping configuration indicating apparatus 300 includes:
  • the signaling setting unit 302 is configured to set an orthogonal cover code configuration or a frequency hopping configuration to the signaling sent to the terminal, where the orthogonal cover code configuration and another configuration of the frequency hopping configuration are Binding therewith, having a predetermined mapping relationship; and signaling unit 304 for transmitting the set signaling to the terminal.
  • the signaling setting unit sets an orthogonal cover code configuration or a frequency hopping configuration in a downlink control message or a radio resource control signaling of the downlink control channel.
  • the signaling setting unit sets 2 bits in the downlink control message to indicate the orthogonal cover code configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship three all demodulation reference signal ports are weighted by the orthogonal cover code of [1, -1], and group hopping or sequence hopping is not enabled;
  • Mapping relationship four does not enable orthogonal cover code function, group frequency hopping and sequence frequency hopping Set.
  • the signaling setting unit sets 1 bit in the downlink control message to indicate the orthogonal cover code configuration or the frequency hopping configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • Mapping relationship 1 the group hopping or sequence hopping is not enabled, and the orthogonal cover code is enabled;
  • the signaling setting unit sets 1-bit high-level signaling in the radio resource control signaling for indicating an orthogonal cover code configuration or a frequency hopping configuration.
  • the predetermined mapping relationship between the orthogonal cover code configuration and the frequency hopping configuration is:
  • mapping relationship 1 the group hopping or sequence hopping is not enabled, and the orthogonal cover code function is enabled; the mapping relationship 2, the group hopping and the sequence hopping are used in the cell configuration, and the orthogonal cover code function is not enabled.
  • the terminal 400 includes:
  • the signaling receiving unit 402 is configured to receive signaling configured with an orthogonal cover code configuration or a frequency hopping configuration, where the orthogonal cover code configuration and another configuration of the frequency hopping configuration are bound thereto, and Predetermined mapping relationship;
  • the processing unit 404 is configured to determine how to perform orthogonal cover code weighting according to the orthogonal cover code configuration or the frequency hopping configuration and the predetermined mapping relationship in the received signaling, and determine whether to perform group hopping or sequence hopping.
  • the predetermined mapping relationship may be the relationship listed in the embodiment of the present invention, or may be other predetermined mapping relationships, as long as the binding of the two configurations can be implemented.
  • the base station can indicate the OCC and the frequency hopping configuration of the terminal by adding a number of bits in the DCI domain of the downlink control channel PDCCH of each terminal, including the following two indication schemes.
  • the indication bits are all UE-specific, that is, valid only for the terminal that receives the indication bit.
  • Solution 1 Use 2-bit signaling to indicate the configuration of the OCC, and bind the frequency hopping configuration to it at the same time; Indication bit occ configuration corresponding if mega frequency configuration
  • All DMRS ports use the OCC weighting of [1 1].
  • the group hopping or sequence hopping code is not enabled.
  • All DMRS ports use [1 -1] OCC weighting. Group hopping or sequence hopping code is not enabled.
  • the “part” includes but is not limited to one of the "odd part", “even part", “first half” and "second half".
  • the base station can use the above method to indicate the configuration of the OCC by using 2-bit signaling, and the user can determine which frequency hopping configuration to use according to whether the OCC is enabled: If the OCC (the first three cases) is enabled, the base station is not enabled. Band hopping and sequence hopping. If OCC is not enabled (fourth case), the frequency hopping configuration of the cell is used.
  • Solution 2 Use 1-bit signaling to indicate a frequency hopping configuration or an OCC configuration, and another configuration is bound to it;
  • the base station can use 1-bit signaling to indicate whether to disable the group hopping and sequence hopping function. If the terminal needs to know the configuration of the OCC, it can be obtained according to the configuration of the frequency hopping: If the frequency hopping function is disabled, enable OCC function (not necessarily the user's DMRS transmission uses OCC, just indicates that OCC is available).
  • the base station may add a number of bits in the RRC signaling of each UE to indicate the frequency hopping configuration and OCC configuration of the terminal, and the indication scheme is as follows.
  • the indication bits are all UE-specific, that is, only valid for the terminal that receives the indication bit.
  • Solution 3 Use 1-bit high-level signaling to indicate frequency hopping configuration or OCC configuration, and another configuration is bound to it; Indication bit hopping configuration 0CC configuration
  • the base station can use 1-bit signaling to indicate whether to disable the group hopping and sequence hopping function. If the terminal needs to know the configuration of the OCC, it can be obtained according to the configuration of the frequency hopping: If the frequency hopping function is disabled, enable OCC function (not necessarily the user's DMRS transmission uses OCC, just indicates that OCC is available).
  • the terminal After receiving the OCC or the frequency hopping configuration indication bit sent by the base station, the terminal determines how to perform OCC weighting on the DMRS sequence of each DMRS port according to the content indicated by the indication bit, and determines whether to perform group hopping or sequence hopping.
  • the invention has wide applicability and can be applied to any antenna number and antenna array (such as line array, polarization array), any duplex system (TDD system or FDD system) and any transmission mode (such as SU-MIMO, MU- Uplink transmission under MIMO, CoMP).
  • the content indicated by the different indication bits is exchangable, that is, the indication content of a certain indication bit may be interchanged with the indication content of any other indication bit in the same table, as long as the indication content does not exceed the scope of the listed table. , are within the protection scope of this patent.
  • the joint indication method and apparatus for the OCC configuration and the frequency hopping configuration of the present invention use the downlink control channel (PDCCH) or the RRC signaling to indicate the uplink OCC configuration or the frequency hopping configuration, and reduce the signaling by the binding relationship configured by the two. Overhead.
  • the invention has the following advantages:
  • the user can know whether the OCC is enabled through this indication method, and know whether group hopping or sequence hopping is needed to increase the flexibility of scheduling;

Abstract

La présente invention porte sur un procédé et un appareil d'indication pour configuration de code de recouvrement orthogonal et configuration de saut de fréquence, ledit procédé comprenant les opérations suivantes : une station de base indique une configuration de code de recouvrement orthogonal ou une configuration de saut de fréquence à un terminal par signalisation, une configuration parmi la configuration de code de recouvrement orthogonal et la configuration de saut de fréquence étant liée à l'autre configuration par une relation de correspondance prédéfinie (S202); sur la base de la configuration de code de recouvrement orthogonal ou de la configuration de saut de fréquence reçue, le terminal réalise un processus de pondération de code de recouvrement orthogonal et détermine de réaliser un saut de fréquence de groupe ou un saut de fréquence de séquence (S204). Grâce au procédé et à l'appareil d'indication combinée pour configuration de code de recouvrement orthogonal (OCC) et configuration de saut de fréquence dans la présente invention, la configuration de saut de fréquence peut être indiquée conjointement avec l'indication pour configuration OCC, ce qui améliore la flexibilité d'utilisation d'OCC et réduit le surdébit de signalisation par la relation de correspondance entre la configuration OCC et la configuration de saut de fréquence.
PCT/CN2011/072285 2010-03-30 2011-03-30 Procédé et appareil d'indication pour configuration de code de recouvrement orthogonal et configuration de saut de fréquence WO2011120429A1 (fr)

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CN201010137858.4 2010-03-30
CN201010137858.4A CN102123014B (zh) 2010-03-30 2010-03-30 正交覆盖码配置和跳频配置指示方法和装置

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WO2011120429A9 WO2011120429A9 (fr) 2011-12-08

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CN103326964B (zh) * 2012-03-19 2016-08-03 华为技术有限公司 一种实现数据解调的方法、装置和系统
CN106455066B (zh) 2015-08-10 2020-05-08 上海诺基亚贝尔股份有限公司 用于配置下行控制信息的方法和设备
WO2019061257A1 (fr) 2017-09-29 2019-04-04 Qualcomm Incorporated Augmentation de la capacité d'accès aléatoire physique à l'aide de codes de couverture orthogonaux
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WO2011120429A9 (fr) 2011-12-08
CN102123014B (zh) 2016-05-18

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