WO2013097455A1 - Procédé, système et dispositif pour transmettre et recevoir des données de liaison montante - Google Patents

Procédé, système et dispositif pour transmettre et recevoir des données de liaison montante Download PDF

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Publication number
WO2013097455A1
WO2013097455A1 PCT/CN2012/079234 CN2012079234W WO2013097455A1 WO 2013097455 A1 WO2013097455 A1 WO 2013097455A1 CN 2012079234 W CN2012079234 W CN 2012079234W WO 2013097455 A1 WO2013097455 A1 WO 2013097455A1
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WIPO (PCT)
Prior art keywords
spreading sequence
orthogonal spreading
user equipment
data
network side
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PCT/CN2012/079234
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English (en)
Chinese (zh)
Inventor
徐婧
潘学明
沈祖康
Original Assignee
电信科学技术研究院
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Publication of WO2013097455A1 publication Critical patent/WO2013097455A1/fr

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    • 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
    • H04L5/0019—Time-frequency-code in which one code is applied, as a temporal sequence, to all frequencies

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for transmitting and receiving uplink data. Background technique
  • the LTE (Long Term Evolution) system has been selected by many operators as the main solution for the latter 3G. This means that the application scenarios, deployment scenarios and spectrum allocation of LTE are more complicated, far beyond the initial discussion of the LTE standard. Assumption.
  • LTE-A Long Term Evolution-Advanced
  • MIMO high-order multi-antenna technology
  • CoMP multi-point coordinated transmission
  • the interference between cells in the LTE system is very serious, which affects the coverage range; Moreover, the throughput of the LTE system is relatively low.
  • the method, system and device for transmitting and receiving uplink data provided by the embodiments of the present invention are used to solve the problem that the transmission performance of the LTE system existing in the prior art is relatively low.
  • the user equipment multiplies the data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain the spread spectrum data;
  • the user equipment maps the spread data to M subcarriers for transmission;
  • the user equipment maps the spread data to M OFDM transmissions
  • the orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.
  • the network side device determines that the user equipment maps uplink data on the M subcarriers; the network side device receives the mapped uplink data on the M subcarriers, where the uplink data is data on one subcarrier multiplied by an orthogonal spreading sequence. The resulting spread spectrum data; or
  • the network side device determines that the user equipment maps the uplink data on the M OFDM symbols; the network side device receives the mapped uplink data on the M OFDM symbols, where the uplink data is data on one OFDM symbol multiplied by orthogonal expansion.
  • the spread spectrum data obtained after the frequency sequence;
  • M is the length of the orthogonal spreading sequence.
  • the orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.
  • the embodiment of the present invention multiplies data on one subcarrier or OFDM symbol by an orthogonal spreading sequence, and maps the spread data to M subcarriers or OFDM symbols for transmission, thereby improving transmission performance;
  • the embodiment of the invention reduces the interference between the systems and improves the transmission performance; further enhances the uplink coverage;
  • the embodiment of the present invention improves throughput and thereby improves transmission performance.
  • FIG. 1 is a schematic structural diagram of a system for transmitting uplink data according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of symbol level data multiplied by an orthogonal spreading sequence according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of time domain spreading according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of frequency domain spreading according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method for transmitting uplink data according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a method for receiving uplink data according to an embodiment of the present invention. detailed description
  • the user equipment multiplies data on one subcarrier or OFDM (Orthogonal Frequency Division Multiplexing) symbol by an orthogonal spreading sequence, and maps the obtained spread data to M sub-subsequences. Transmitted on a carrier or OFDM symbol, where M is the length of the orthogonal spreading sequence. Since the embodiment of the present invention multiplies data on one subcarrier or OFDM symbol by an orthogonal spreading sequence, the spread data is mapped on M subcarriers or OFDM symbols for transmission, thereby improving transmission performance.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the embodiment of the present invention reduces the number between the systems. Disturbance, improve transmission performance; further enhance uplink coverage;
  • the embodiment of the invention improves the throughput, thereby improving the transmission performance.
  • the system for transmitting uplink data in the embodiment of the present invention includes: a user equipment 10 and a network side device 20.
  • the user equipment 10 is configured to multiply data on one subcarrier or OFDM symbol by an orthogonal spreading sequence to obtain data that is spread; if the data on one subcarrier is multiplied by an orthogonal spreading sequence, the spectrum is spread.
  • the subsequent data mapping is transmitted on M subcarriers; if the data on one OFDM symbol is multiplied by the orthogonal spreading sequence, the spread data is mapped on M OFDM transmissions; where M is the length of the orthogonal spreading sequence ;
  • the network side device 20 is configured to determine that the user equipment maps uplink data on M subcarriers or OFDM symbols, and receives mapped uplink data on M subcarriers or OFDM symbols.
  • the network side device 20 receives the mapped uplink data on the M subcarriers
  • the network side device 20 receives the mapped uplink data on the M OFDM symbols.
  • the orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.
  • the user equipment 10 selects an orthogonal spreading sequence according to the home cell identity and/or the home cell configuration information;
  • the user equipment 10 obtains the orthogonal spreading sequence number by using the Cell ID mod N, where the Cell ID is the home cell identifier, and N is the orthogonal spreading sequence length;
  • the network side places the orthogonal spreading sequence number in the home cell configuration information, and the user equipment 10 determines the orthogonal spreading sequence number according to the received home cell configuration information.
  • the network side device 20 determines the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices (the principle determined is: the orthogonal spreading sequence configured by the neighboring cell is different) And notifying the user equipment 10; and/or the network side device 20 receiving the orthogonal spreading sequence information configured by the central node to determine the orthogonal spreading sequence of the local cell, and notifying the user equipment; and/or
  • the network side device 20 determines the orthogonal spreading sequence of the current cell according to the identifier of the current cell configuration. If the orthogonal spreading sequence is configured by the user, the user equipment 10 selects an orthogonal spreading sequence according to the user identifier and/or the home cell configuration information, or determines an orthogonal spreading sequence according to the notification of the network side device 20;
  • the user equipment 10 obtains the orthogonal spreading sequence number by using the UE ID mod N, where the UE ID is the user identifier, and N is the orthogonal spreading sequence length;
  • the network side places the orthogonal spreading sequence number in the home cell configuration information, and the user equipment 10 determines the orthogonal spreading sequence number according to the received home cell configuration information.
  • the network side device 20 autonomously configures the orthogonal spreading sequence of the user equipment (the configuration principle is: the user equipments allocating the same resource are configured with different orthogonal spreading sequences to ensure orthogonality between user equipments), And notifying the user equipment; and/or the network side device 20 determines the orthogonal spreading sequence of the user equipment according to the identifier of the user equipment.
  • the network side device 20 notifies the user equipment of the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter through the high layer signaling or the physical layer signaling; correspondingly, the user equipment 10 according to the received high layer signaling or physical Layer signaling, determining the manner in which uplink data is transmitted and/or orthogonal spreading sequence parameters.
  • the network side device 20 configures the solution of the embodiment of the present invention for the user equipment.
  • the identifier corresponding to the solution of the embodiment of the present invention is PUSCH Format 2
  • the network side device 20 configures the PUSCH Format 2 for the user equipment after determining that the uplink channel shield of the user equipment 10 cannot meet the communication requirement; correspondingly, the user equipment 10 It is known to use the solution of the embodiments of the present invention.
  • the network side device 20 may determine the uplink channel shield of the user equipment according to at least one of the following information: an uplink SRS signal of the user equipment, feedback information of the user equipment, and location information of the user equipment.
  • the network side device 20 monitors the uplink SRS signal of the user equipment 10, and determines the user equipment 10 according to the orthogonal spreading sequence. Whether the uplink channel shield meets the communication requirements.
  • the NACK Negative ACKnowledge
  • the network side device 20 determines the uplink channel shield of the user equipment 10 after determining that the user equipment 10 is at the cell edge according to the location information of the user equipment 10. The quantity does not satisfy the communication requirement, otherwise it is determined that the uplink channel shield of the user equipment 10 satisfies the communication requirement.
  • the foregoing three methods for determining whether the uplink channel shield of the user equipment 10 meets the communication requirement may be used independently; or may be comprehensively determined by multiple methods.
  • whether the uplink channel shield quantity of the user equipment 10 satisfies the communication requirement is not limited to the foregoing three modes, and other methods capable of determining whether the uplink channel shield quantity of the user equipment 10 meets the communication requirement are also the same. Embodiments of the invention are applicable.
  • the network side device 20 configures the PUSCH Format 2 to the user equipment 10
  • the PUSCH Format 2 configuration information (that is, the manner in which the uplink data is transmitted and/or orthogonal) may be transmitted to the user equipment through high layer signaling or physical layer signaling. Spreading sequence parameters).
  • the PUSCH Format is not limited to the high layer signaling or the physical layer signaling manner, and the other embodiments that can configure the PUSCH Format for the user equipment are applicable to the embodiments of the present invention.
  • the data mapping manner of symbol level spreading may be used.
  • the data mapping manner of the symbol level spread spectrum in the embodiment of the present invention is that the symbol level data is multiplied by the orthogonal spread spectrum sequence, and then mapped to the physical resource block according to the time domain spread spectrum or the frequency domain spread spectrum manner; correspondingly, the user After multiplying the symbol level data by the orthogonal spreading sequence, the device 10 maps to the physical resource block according to time domain spreading or frequency domain spreading.
  • the orthogonal spreading sequence may be a walsh sequence.
  • the sequence length is 2 (other lengths are also applicable to the embodiments of the present invention).
  • 6k n, k is the number of RE (Resource Element) carried by a symbol.
  • the user equipment 10 and the network side device 20 can determine the size of the transport block carrying the data according to the following manner:
  • the user equipment 10 and the network side device 20 determine the size TBsize of the transport block according to the MCS (Modulation and Coding Scheme) level I TBS , the number of scheduled physical resource blocks N PRB and the length of the orthogonal spreading sequence N.
  • MCS Modulation and Coding Scheme
  • the network side device 20 and the user equipment 10 determine, according to the correspondence between the I TBS , the NPRB and the transport block size, the transport block size corresponding to the ITBS and the N PRB /N, where N is the length of the orthogonal spreading sequence.
  • LTE 3GPP 36.213 protocol specified I TBS, N PRB / N correspondence and three transport block size, I TBS I TBS embodiment of the present invention and the embodiment with N PRB LTE 3GPP 36.213 protocol, and N PRB is defined
  • the embodiment of the present invention can determine the corresponding fast transmission according to I TBS and N PRB /N. size.
  • the correspondence between the I TBS , the N PRB /N and the transport block size in the embodiment of the present invention is similar to the correspondence between the I TBS , the N PRB and the transport block size specified in the LTE 3 GPP 36.213 protocol. .
  • the network side device 10 configures a reference signal for the user equipment 20 by using the following rules: The network side configures different cyclic shifts for at least two user equipments or at least two groups of user equipments; or
  • the network side configures different OCC (Orthogonal Convolutional Code) sequences for at least two user equipments or at least two groups of user equipments.
  • OCC Orthogonal Convolutional Code
  • the scenario where the resources scheduled for at least two (group) user devices are identical may be at least two.
  • the (group) group user equipment is configured with different cyclic shifts ns to ensure the orthogonality of the pilots between user equipments (the different cyclic shifts are not limited to the scenes with the same resources, and other scenarios are also applicable).
  • different OCC sequences may be configured for at least two (group) group user equipments to ensure orthogonality of inter-terminal pilots.
  • the OCC sequence is not limited to scenarios with different resources, and other scenarios are equally applicable.
  • At least two (group) user equipments may be system level or cell level.
  • the network side device 20 configures the PUSCH format 2 mode for the user equipment 10, that is, the solution of the embodiment of the present invention, the network side device 20 performs symbol level despreading on the data, and then detects the data by using the existing method.
  • Different device manufacturers have different detection methods for PUSCH format 2, and the specific detection methods are related to the device manufacturer).
  • the detection method of the PUSCH format 2 in the embodiment of the present invention can also use more advanced detection technologies, such as joint detection.
  • the user equipment in the system for transmitting uplink data in the embodiment of the present invention includes: a spread spectrum module 500 and a transmission module 510.
  • the spreading module 500 is configured to multiply data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain the spread spectrum data;
  • the transmission module 510 is configured to: if the spreading module 500 multiplies the data on one subcarrier by the orthogonal spreading sequence, the spread data is mapped on the M subcarriers; if the spreading module 500 is to be on an OFDM symbol Multiplying the data by an orthogonal spreading sequence, and mapping the spread data to M OFDM for transmission;
  • M is the length of the orthogonal spreading sequence.
  • the orthogonal spreading sequence is a cell-specific configuration.
  • the spreading module 500 determines the orthogonal spreading sequence according to the following steps:
  • the orthogonal spreading sequence is selected according to the home cell identity and/or the home cell configuration information.
  • the orthogonal spreading sequence is a user-specific configuration.
  • the spreading module 500 determines the orthogonal spreading sequence according to the following steps:
  • the orthogonal spreading sequence is selected based on the user identity and/or the home cell configuration information.
  • the transmission module 510 determines the size of the transport block according to the following steps:
  • the size of the transmission block is determined according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.
  • the spreading module 500 determines the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameters according to the received higher layer signaling or physical layer signaling.
  • the network side device in the system for transmitting uplink data in the embodiment of the present invention includes: a determining module 600 and a receiving module 610.
  • the determining module 600 is configured to determine that the user equipment maps the uplink data on the M subcarriers or the OFDM symbol
  • the receiving module 610 is configured to receive the mapped uplink data on the M subcarriers or the OFDM symbol, where the uplink data is a subcarrier or an OFDM
  • the data on the symbol is multiplied by the spread spectrum data obtained after the orthogonal spreading sequence, and ⁇ is the length of the orthogonal spreading sequence.
  • the receiving module 610 receives the mapped uplink data on the subcarriers, where the uplink data is data on one subcarrier multiplied by the orthogonal spreading sequence. After the obtained spread spectrum data;
  • the receiving module 610 receives the mapped uplink data on the M OFDM symbols, where the uplink data is data on one OFDM symbol multiplied by the orthogonal spreading sequence. The resulting spread spectrum data.
  • the orthogonal spreading sequence is a cell-specific configuration.
  • the receiving module 610 determines the orthogonal spreading sequence according to the following steps:
  • the orthogonal spreading sequence of the current cell is determined according to the identifier of the configuration of the cell.
  • the orthogonal spreading sequence is a user-specific configuration.
  • the receiving module 610 determines the orthogonal spreading sequence according to the following steps:
  • the orthogonal spreading sequence of the user equipment is determined according to the identity of the user equipment.
  • the receiving module 610 determines the size of the transport block according to the following steps:
  • the size of the transmission block is determined according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.
  • the receiving module 610 is further configured to:
  • the receiving module 610 is further configured to:
  • the data After receiving the uplink transmission data, the data is subjected to symbol level despreading before the data is detected.
  • the embodiment of the present invention further provides a method for transmitting uplink data.
  • the method for solving the problem is similar to the user equipment in the system for transmitting uplink data. Therefore, the implementation of the method can be implemented by referring to the implementation of the device. , the repetition will not be repeated.
  • the method for transmitting uplink data in the embodiment of the present invention includes the following steps: Step 701: The user equipment multiplies data on one subcarrier or one OFDM symbol by an orthogonal spreading sequence to obtain the spread data.
  • Step 702 If the data on one subcarrier is multiplied by the orthogonal spreading sequence, the user equipment maps the spread data to M subcarriers. If the data on one OFDM symbol is multiplied by the orthogonal spreading sequence. The user equipment maps the spread data to M OFDM for transmission;
  • M is the length of the orthogonal spreading sequence.
  • the orthogonal spreading sequence is a cell-specific configuration.
  • step 701 the user equipment determines the orthogonal spreading sequence according to the following steps:
  • the user sets the orthogonal spreading sequence according to the home cell identity and/or the home cell configuration information.
  • the orthogonal spreading sequence is a user-specific configuration.
  • step 701 the user equipment determines the orthogonal spreading sequence according to the following steps:
  • the user equipment selects an orthogonal spreading sequence based on the user identity and/or the home cell configuration information.
  • the user equipment determines the size of the transport block according to the following steps:
  • the user equipment determines the size of the transport block according to the MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.
  • the method further includes:
  • the user equipment determines the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter according to the received high layer signaling or physical layer signaling.
  • the embodiment of the present invention further provides a method for transmitting uplink data.
  • the method for solving the problem is similar to the network side device in the system for transmitting uplink data. Therefore, the implementation of the method can be referred to the device. Implementation, repetition will not be repeated.
  • the method for transmitting uplink data in the embodiment of the present invention includes the following steps:
  • Step 801 The network side device determines that the user equipment maps the uplink data on the M subcarriers or the OFDM symbol.
  • Step 802 The network side device receives the mapped uplink data on the M subcarriers or the OFDM symbol, where the uplink data is a subcarrier or an OFDM.
  • the data on the symbol is multiplied by the spread spectrum data obtained after the orthogonal spreading sequence, and M is the length of the orthogonal spreading sequence.
  • the network side device receives the uplink data that is mapped on the M subcarriers
  • the network side device receives the mapped uplink data on the M OFDM symbols.
  • the orthogonal spreading sequence is a cell-specific configuration.
  • the network side device determines the orthogonal spreading sequence according to the following steps: The network side device determines the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices, and notifies the user equipment; and/or
  • the network side device determines the orthogonal spreading sequence of the current cell according to the received orthogonal spreading sequence information configured by the central node, and notifies the user equipment; and/or
  • the network side device # ⁇ determines the orthogonal spreading sequence of the current cell according to the identifier of the local cell configuration.
  • the orthogonal spreading sequence is a user-specific configuration.
  • the network side device determines the orthogonal spreading sequence according to the following steps:
  • the network side device independently configures the orthogonal spreading sequence of the user equipment, and notifies the user equipment; and/or
  • the network side device determines the orthogonal spreading sequence of the user equipment according to the identifier of the user equipment.
  • the network side device determines the size of the transport block according to the following steps:
  • the network side device determines the size of the transport block according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.
  • the method further includes:
  • the network side device notifies the user equipment of the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter through high layer signaling or physical layer signaling.
  • the method further includes:
  • the network side device performs symbol level despreading of the data before detecting the data.
  • a process may be synthesized to form a method for transmitting uplink data, that is, step 701 and step 702 are performed first, and then step 801 and step 802 are performed.
  • Example 1 It is necessary to reduce the number of rooms between the four districts.
  • the equivalent code rate corresponding to the PUSCH format 2 (including the spread spectrum effect) of the user equipment is the same as the equivalent code rate of the PUSCH format 1 configured by the user equipment, that is, the code rate corresponding to the PUSCH format 2 MCS is PUSCH format2 MCS. Corresponding code rate is 2 times.
  • Example 2 The system capacity needs to be increased.
  • the PUSCH format 2 spreading code is a user equipment special, and the users mapped on the same resource are configured with different spreading codes.
  • the equivalent code rate corresponding to the PUSCH format 2 (including the spread spectrum effect) is the same as the equivalent code rate corresponding to the PUSCH format 1 configured by the user equipment, that is, the code rate corresponding to the PUSCH format 2 MCS is PUSCH format 2 MCS.
  • the code rate is 2 times.
  • embodiments of the present invention can be provided as a method, system, or computer program product.
  • the present invention can be implemented in terms of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne le domaine technique des communications sans fil, et plus particulièrement un procédé, un système et un dispositif pour transmettre et recevoir des données de liaison montante, en vue de résoudre le problème dans l'art antérieur des performances de transmission médiocres d'un système LTE. Le procédé pour transmettre des données de liaison montante selon un mode de réalisation de l'invention comprend les étapes suivantes : un équipement d'utilisateur multiplie les données sur une sous-porteuse ou sur un symbole OFDM par une séquence d'étalement orthogonale, pour obtenir des données étalées ; si les données sur une sous-porteuse sont multipliées par la séquence d'étalement orthogonale, l'équipement d'utilisateur corrèle les données étalées avec M sous-porteuses pour la transmission, et si les données sur un symbole OFDM sont multipliées par la séquence d'étalement orthogonale, l'équipement d'utilisateur corrèle les données étalées avec M symboles OFDM pour la transmission, M étant la longueur de la séquence d'étalement orthogonale. Le procédé selon le mode de réalisation de l'invention améliore les performances de transmission.
PCT/CN2012/079234 2011-12-30 2012-07-27 Procédé, système et dispositif pour transmettre et recevoir des données de liaison montante WO2013097455A1 (fr)

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CN102413081A (zh) * 2011-12-30 2012-04-11 电信科学技术研究院 传输和接收上行数据的方法、系统和设备
CN102932127B (zh) * 2012-11-07 2015-05-06 哈尔滨工业大学 Td-lte扩频ofdm系统的多基站协同通信方法
CN108989257B (zh) * 2017-05-31 2024-01-30 中兴通讯股份有限公司 数据调制方法、装置及存储介质

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US20070171994A1 (en) * 2006-01-26 2007-07-26 Kabushiki Kaisha Toshiba Methods for data transmission
CN101997659A (zh) * 2009-08-25 2011-03-30 大唐移动通信设备有限公司 配置上行控制资源以及上行控制信息的传输方法及装置
CN102413081A (zh) * 2011-12-30 2012-04-11 电信科学技术研究院 传输和接收上行数据的方法、系统和设备

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