WO2009043305A1 - Procédé de transmission de données de liaison montante et dispositif correspondant, procédé de configuration d'intervalle de transition et dispositif correspondant - Google Patents

Procédé de transmission de données de liaison montante et dispositif correspondant, procédé de configuration d'intervalle de transition et dispositif correspondant Download PDF

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Publication number
WO2009043305A1
WO2009043305A1 PCT/CN2008/072564 CN2008072564W WO2009043305A1 WO 2009043305 A1 WO2009043305 A1 WO 2009043305A1 CN 2008072564 W CN2008072564 W CN 2008072564W WO 2009043305 A1 WO2009043305 A1 WO 2009043305A1
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WO
WIPO (PCT)
Prior art keywords
uplink
subframe
base station
downlink
symbols
Prior art date
Application number
PCT/CN2008/072564
Other languages
English (en)
Chinese (zh)
Inventor
Peng Wang
Yunji Zhang
Yuyu Liu
Jun Liu
Han Bu
Jun Cheng
Donghui Wang
Gang NIE
Wei Xiao
Original Assignee
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.
Publication of WO2009043305A1 publication Critical patent/WO2009043305A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • Uplink data transmission method and device, transition gap configuration method and device The application is submitted to the China Intellectual Property Office on September 29, 2007, and the application number is 200710161581. 7 , and the invention name is "uplink data transmission method and device, transition gap configuration" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • the present invention relates to the field of wireless communication technologies, and in particular, to an uplink data transmission method and apparatus, and a transition gap configuration method and apparatus.
  • WiMAX Forum Mobile System Profile for Orthogonal Frequency Division Multiple Access (TDDD) for different time divisions (TDD, Time Division Duplex) OFDMA, Orthogonal Frequency Division Multiple Access) provides a variety of sub-ton proportions.
  • TDDD Orthogonal Frequency Division Multiple Access
  • TDD Time Division Duplex
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the sub-frame ratios provided by the WiMAX Forum are:
  • Figure 1 shows the pattern with a sub-frame ratio of (26:21).
  • the base station maps the data block sent to the terminal to the time domain and the frequency domain resource of the downlink subframe; meanwhile, the base station also according to the QoS.
  • the resource division signaling is sent to the terminal, and the uplink time-frequency resource block that can be used is indicated, and the terminal maps the data block to be uploaded to the uplink time-frequency resource according to the indication of the base station.
  • the OFDMA system of TDD when the bandwidth is given, the number of antennas received and received, and the frame duration, in the same coding rate and modulation mode, the maximum rate that the downlink air interface can provide is the downlink subframe symbol.
  • the number determines the maximum rate that the upstream air interface can provide, which is also determined by the number of uplink subframe symbols. According to the ratio of the subframes given in the overview of the mobile system in the WiMAX Forum, the maximum number of uplink subframe symbols currently supported is 21, so the number of subframe symbols is the maximum number of uplink subframe symbols that provide the maximum rate of uplink air interfaces.
  • Table 1 shows the maximum rate supported by the upstream air interface when the current transmission bandwidth is 10 MHz, the number of uplink subframe symbols is 21, and the number of terminals is different.
  • the maximum rate is 16 Quadrature Amplitude Modulation (QAM, Quadrature Ainpliiude Modula) Ioii), obtained when the coding rate is 3/4, the duration of one frame is 5ms, and the partial allocation of subchannels (PUSC) is used.
  • QAM Quadrature Amplitude Modulation
  • Ioii Quadrature Ainpliiude Modula
  • the ratio of the sub-frames is that the number of the downlink sub-frame symbols is greater than the number of the uplink sub-frame symbols, that is, the maximum rate of the obtained downlink air interface is always higher than the maximum rate of the uplink air interface, which limits the high requirement for the terminal upload rate.
  • Real-time high-definition video streaming and other business applications such as video blog (Video Blog) upload, high-definition video surveillance and other services.
  • the sum of the number of upper and lower subframe symbols defined by the WiMAX Forum in the prior art is 47.
  • the conformance description is implemented according to the protocol provided by the WiMAX Forum.
  • the transmission bandwidth is 10MHz.
  • the embodiment of the invention provides an uplink data transmission method, which is used to solve the problem that the uplink transmission bandwidth cannot meet the requirement when the uplink data volume is large in the prior art.
  • the embodiment of the present invention further provides a conversion gap configuration method, which is used to solve the problem that the base station codeword detection is difficult and the coverage is low in the prior art.
  • the embodiment of the invention further provides a corresponding base station device.
  • the embodiment of the present invention provides an uplink data transmission method, including the following steps: the base station indicates that the terminal occupies the corresponding uplink data transmission resource according to the proportion of the subframe number of the uplink subframe symbol that is greater than or equal to the number of the downlink subframe symbol; and the receiving terminal Uplink data transmitted on an uplink data transmission resource indicated by the base station.
  • the embodiment of the present invention further provides a base station, including an indication unit, configured to indicate that the terminal occupies a corresponding uplink data transmission resource according to a proportion of the subframe number of the uplink subframe symbol that is greater than or equal to the number of the downlink subframe symbol; And configured to receive uplink data that is transmitted by the terminal on the uplink data transmission resource indicated by the indication unit.
  • the embodiment of the present invention further provides a method for configuring a transition gap, including the steps of: the base station reserving at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data; and continuing the reserved subframe symbol Time, used as a transmit/receive transition gap between uplink and downlink subframes.
  • the embodiment of the present invention further provides a base station, including a reservation unit, configured to reserve at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data, and a transition gap unit, where the reserved unit is used The duration of the reserved subframe symbol is used as a transmit/receive transition gap between the uplink and downlink subframes.
  • a base station including a reservation unit, configured to reserve at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data, and a transition gap unit, where the reserved unit is used The duration of the reserved subframe symbol is used as a transmit/receive transition gap between the uplink and downlink subframes.
  • the uplink data transmission method provided by the embodiment of the present invention uses a large number of uplink subframe symbols
  • the uplink data is transmitted in the proportion of the subframes of the number of downlink subframe symbols, thereby improving the uplink transmission bandwidth and satisfying the service requirement for the uplink rate.
  • the method for configuring the transition gap provided by the embodiment of the present invention is configured to reserve at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data, so as to increase the TTG, so that the base station can fully perform codeword detection on the terminal. , so that long-distance terminals can also successfully access the network, thus increasing the coverage of the base station and reducing the cost of establishing the operator.
  • 1 is a sub-frame ratio pattern of OFDMA 26:21 in the prior art
  • FIG. 2 is a diagram showing a subframe ratio pattern of OFDMA 13:33 in an embodiment of the present invention
  • 3a is a flowchart of a first uplink data transmission scheme according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a second uplink data transmission scheme according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a first base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of a method for configuring a transition gap according to an embodiment of the present invention.
  • the embodiment of the present invention uses the proportion of the subframe number of the uplink subframe symbol that is greater than or equal to the number of the downlink subframe symbol to improve the uplink transmission bandwidth. And using the duration of at least one sub-frame symbol Expand the TTG to expand the coverage of the base station.
  • the ratio of the subframes of the number of downlink subframe symbols is 13: 33.
  • the sub-frame ratio pattern is shown in Figure 2.
  • the first uplink data transmission method provided by the embodiment of the present invention includes the following steps: Step 301: The base station indicates that the terminal is occupied according to the proportion of the subframe number of the uplink subframe symbol being greater than or equal to the number of the downlink subframe symbol. Corresponding uplink data transmission resources.
  • Step 302 Receive uplink data transmitted by the terminal on the uplink data transmission resource indicated by the base station.
  • the specific implementation process of the second data uploading solution provided by the embodiment of the present invention is as follows:
  • Step 301 When the base station activates each sector, the base station performs configuration according to the proportion of the subframes in which the number of uplink subframe symbols is greater than or equal to the number of downlink subframe symbols.
  • Step 302 After the base station activates the sector, the downlink subframe is sent according to the configured subframe ratio, and the downlink subframe that is sent includes a preamble (preamble) carrying the base station information.
  • preamble preamble
  • Step 303 The terminal receives the downlink subframe delivered by the base station, and synchronizes with the base station by using the preamble preamble included in the received downlink subframe.
  • Step 304 The terminal parses the frame control header (FCH, Frame Control Header) of the received downlink subframe to obtain a subchannel used by the current sector, and a modulation coding mode used by the DL-MAP-IE.
  • FCH Frame Control Header
  • Step 305 The terminal receives the DL-MAP_IE message on the subchannel used by the current sector, parses the received DL-MAP_IE message according to the above-mentioned known modulation and coding manner, and obtains a base station broadcast downlink channel description message (DCD).
  • DCD base station broadcast downlink channel description message
  • the bearer location of the message the terminal receives and parses the DCD message at the determined bearer location, and obtains the DL-MAP carried in the message, and the DL-MAP indicates the number of downlink subframe symbols, so that the terminal obtains the downlink sub-subscore The number of frame symbols.
  • Step 306 After parsing the received DL-MAP_IE message, the terminal may further obtain a bearer location of the base station broadcast uplink channel description message (UCD message), and the terminal receives and parses the UCD message at the determined bearer location, and obtains the message.
  • the UL-MAP carried in the UL-MAP indicates the number of uplink subframe symbols, so that the terminal obtains the number of uplink subframe symbols.
  • the base station can use the segment broadcast mode supported by the protocol when broadcasting the DCD/UCD message.
  • Step 307 The terminal obtains an initial time (Allocation Start Time) for allocating uplink data according to the received UL-MAP message, so as to obtain a starting position of the uplink subframe symbol.
  • Allocation Start Time an initial time for allocating uplink data according to the received UL-MAP message
  • the base station is configured to indicate that the terminal occupies the corresponding uplink data transmission resource according to the proportion of the subframe number of the uplink subframe symbol being greater than or equal to the number of the downlink subframe symbol.
  • Step 308 The base station and the terminal access according to an access procedure specified by the protocol.
  • Step 309 The accessed terminal performs downlink on the corresponding downlink transmission resource and uplink transmission resource allocated by the base station according to the obtained number of downlink subframe symbols, the number of uplink subframe symbols, and the start position of the uplink subframe symbol. Data reception and transmission of uplink data. Therefore, the terminal transmits the uplink data on the uplink data transmission resource indicated by the base station.
  • Table 2 shows the formula for calculating the Allocation Start Time value when the transmission bandwidth is 10 MHz and the current frame allocation mode and the frame allocation mode are used.
  • frame is the duration of one frame
  • Sym is the duration of one subframe symbol
  • PS is the time unit associated with the physical layer.
  • Table 3 shows that the subframe ratio is 13:33, the transmission bandwidth is 10MHz, and the cyclic prefix (CP, Cyclic Prefix) occupies 1/9 of the duration of a complete OFDMA symbol, when the current frame allocation mode and the interframe allocation mode are used. Allocation Start Time value. Table 3 13: 33, 10MHz, Allocation when CP accounts for 1/9 of the duration of OFDMA symbols
  • Table 4 shows the maximum rate supported by the upstream air interface when the subframe ratio is 13:33, the duration of one frame is 5ms, the 16QAM modulation is 3/4, and the PUSC resource allocation mode is used. Table 4 13:33, 16QAM, 3/4, PUSC, 10MHz, 5ms maximum rate of upstream air interface
  • the embodiment of the present invention further provides a base station, which includes an indication unit 101, configured to indicate that the terminal occupies a corresponding number of subframes whose number of uplink subframe symbols is greater than or equal to the number of downlink subframe symbols.
  • the uplink data transmission resource wherein the indication unit 101, after the sector where the terminal is located, notifies the number of uplink subframe symbols that the terminal can occupy according to the ratio of the number of uplink subframe symbols that is greater than or equal to the number of downlink subframe symbols.
  • the number of the downlink subframe symbols and the starting position of the uplink subframe symbols are used to indicate that the terminal occupies the corresponding uplink data transmission resource.
  • the receiving unit 102 is configured to receive uplink data that is transmitted by the terminal on the uplink data transmission resource indicated by the indication unit 101.
  • the embodiment of the present invention proposes that the duration of at least one subframe symbol can be used to increase the TTG, thereby increasing the coverage of the base station, which is beneficial to reducing the operator's website construction cost.
  • the sub-frame ratio is 13:33
  • the sum of the number of uplink and downlink subframe symbols is 46, which is better than that in the WiMAX Forum.
  • the statement of consistency is one less symbol.
  • the embodiment of the present invention further provides another base station, including a reservation unit 201, configured to reserve at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data;
  • the unit 202 is configured to use the duration of the subframe symbol reserved by the reservation unit 201 as a transmit/receive transition gap (TTG) between the uplink and downlink subframes.
  • TTG transmit/receive transition gap
  • the method for configuring the transition gap provided by the embodiment of the present invention, as shown in FIG. 6, includes the following steps: Step 601: The base station reserves at least one subframe symbol in a subframe symbol used for transmitting uplink and downlink data.
  • Step 602 Use the duration of the reserved subframe symbol as a transmission/reception transition gap between the uplink and downlink subframes.
  • the uplink transmission bandwidth is increased by using the ratio of the number of uplink subframe symbols that is greater than the number of downlink subframe symbols, so that the service requirement for the uplink rate is better met.
  • the duration of at least one subframe symbol is used to increase the TTG to expand the coverage of the base station, thereby reducing the operator's cost of establishing the station.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • ROM read-only memory
  • RAM random access memory

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

Abstract

La présente invention concerne un procédé de transmission de données de liaison montante, comprenant la commande par une station de base aux terminaux pour l'occupation des ressources de transmission de liaison montante correspondantes, selon le rapport de sous-trame indiquant que le nombre de symboles de sous-trame de liaison montante est supérieur ou égal au nombre de symboles de liaison descendante ; et la transmission par le terminal récepteur de données de liaison montante dans la ressource de transmission de données de liaison montante commandée par la station de base. L'invention concerne également un procédé de configuration d'intervalle de transition, comprenant la réservation par une station de base d'au moins un symbole de sous-trame parmi les symboles de sous-trame qui sont utilisés pour transmettre des données de liaison montante et descendante ; et l'utilisation de la durée de symbole(s) de sous-trame réservé(s) comme intervalle de transition de transmission/réception entre la sous-trame de liaison montante et la sous-trame de liaison descendante. La présente invention accroît la bande passante de transmission de liaison montante, satisfait les exigences de service nécessitant un débit supérieur de liaison montante.
PCT/CN2008/072564 2007-09-29 2008-09-27 Procédé de transmission de données de liaison montante et dispositif correspondant, procédé de configuration d'intervalle de transition et dispositif correspondant WO2009043305A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200710161581 CN101400136A (zh) 2007-09-29 2007-09-29 上行数据传输方法及装置、转变间隙配置方法及装置
CN200710161581.7 2007-09-29

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN109155937A (zh) * 2016-05-12 2019-01-04 富士通株式会社 基站、终端、无线通信系统以及通信方法
CN110582992A (zh) * 2017-03-02 2019-12-17 环球星链公司 用于处理在轨道环境中运行的航天器和地面电信装置之间的通信的方法和设备
US11265894B2 (en) 2016-05-23 2022-03-01 Qualcomm Incorporated Uplink transmission gaps in eMTC
US11595114B2 (en) 2017-04-26 2023-02-28 Lynk Global, Inc. Method and apparatus for handling communications between spacecraft operating in an orbital environment and terrestrial telecommunications devices that use terrestrial base station communications
US11863250B2 (en) 2021-01-06 2024-01-02 Lynk Global, Inc. Satellite communication system transmitting navigation signals using a wide beam and data signals using a directive beam

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CN112688883B (zh) * 2019-10-18 2023-03-24 上海华为技术有限公司 一种发送端、接收端以及带宽切换方法

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109155937A (zh) * 2016-05-12 2019-01-04 富士通株式会社 基站、终端、无线通信系统以及通信方法
CN109155937B (zh) * 2016-05-12 2022-06-28 富士通株式会社 基站、终端、无线通信系统以及通信方法
US11265894B2 (en) 2016-05-23 2022-03-01 Qualcomm Incorporated Uplink transmission gaps in eMTC
CN110582992A (zh) * 2017-03-02 2019-12-17 环球星链公司 用于处理在轨道环境中运行的航天器和地面电信装置之间的通信的方法和设备
US11595114B2 (en) 2017-04-26 2023-02-28 Lynk Global, Inc. Method and apparatus for handling communications between spacecraft operating in an orbital environment and terrestrial telecommunications devices that use terrestrial base station communications
US11876601B2 (en) 2017-04-26 2024-01-16 Lynk Global, Inc. Method and apparatus for handling communications between spacecraft operating in an orbital environment and terrestrial telecommunications devices that use terrestrial base station communications
US11863250B2 (en) 2021-01-06 2024-01-02 Lynk Global, Inc. Satellite communication system transmitting navigation signals using a wide beam and data signals using a directive beam

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