WO2009062388A1 - Procédé et appareil de transmission d'informations de données - Google Patents

Procédé et appareil de transmission d'informations de données Download PDF

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Publication number
WO2009062388A1
WO2009062388A1 PCT/CN2008/001792 CN2008001792W WO2009062388A1 WO 2009062388 A1 WO2009062388 A1 WO 2009062388A1 CN 2008001792 W CN2008001792 W CN 2008001792W WO 2009062388 A1 WO2009062388 A1 WO 2009062388A1
Authority
WO
WIPO (PCT)
Prior art keywords
time slot
data
synchronization information
information
downlink time
Prior art date
Application number
PCT/CN2008/001792
Other languages
English (en)
Chinese (zh)
Inventor
Guangyi Liu
Lu Han
Yuhong Huang
Original Assignee
China Mobile Communications Corporation
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 China Mobile Communications Corporation filed Critical China Mobile Communications Corporation
Publication of WO2009062388A1 publication Critical patent/WO2009062388A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]

Definitions

  • the present invention relates to a wireless communication technology, and in particular, to a data information transmission method and apparatus thereof. Background technique
  • the first time slot in the data frame is a downlink time slot, followed by a synchronization symbol and a GP, and an GP is followed by an uplink time slot (which may have multiple uplink time slots), and an uplink time slot. There may then be several downstream time slots.
  • the downlink signals of other base stations will arrive at the base station where the user is located after delay. If the delay exceeds the length of the protection time slot, the downlink signal of one base station will be the base station of another base station.
  • the uplink received signal generates interference. Especially in some cases, in order to ensure the correct reception of the synchronization symbol, it is necessary to increase the transmission power of the synchronization symbol, which will exacerbate the interference between the base stations.
  • Embodiments of the present invention disclose a data information transmitting method and apparatus thereof to reduce signal interference between base stations without increasing system overhead and resource consumption.
  • the data frame When the signal transmitting end sends the data frame carrying the data information, the data frame includes at least one downlink time slot, a protection time slot, and at least one uplink time slot in sequence;
  • the signal transmitting end is at the beginning of the downlink time slot, or is not in phase with the uplink time slot.
  • the end portion of the downstream downlink slot, or between two adjacent downlink slots, transmits synchronization information.
  • a setting module configured to set a data frame, where the data frame includes at least one downlink time slot, a protection time slot, and at least one uplink time slot in sequence; and at a beginning portion of the downlink time slot, or during the uplink Bearer synchronization information is set at the end of the downlink slot that is not adjacent to the slot, or between two adjacent downlink slots;
  • a sending module configured to send the set data frame.
  • the downlink time slot, the protection time slot, and the uplink time slot are sequentially transmitted, and the synchronization information is carried in the beginning part of the downlink time slot, or is carried in the uplink time slot.
  • the interference of other base stations on the uplink receiving signals of the base station transmitting the data frame when the power of the synchronization symbol needs to be boosted is reduced, and the requirement for the protection time slot length is reduced, thereby reducing the overhead of the system.
  • FIG. 1 is a schematic structural diagram of a data frame in the prior art
  • FIG. 2 is a diagram showing a slot structure of a data frame in an embodiment of the present invention.
  • FIG. 3 is a block diagram showing a structure of a data frame in another embodiment of the present invention.
  • FIG. 4 is a block diagram showing a structure of a data frame in another embodiment of the present invention.
  • FIG. 5 is a diagram showing a slot structure of a data frame in another embodiment of the present invention.
  • FIG. 6 is a block diagram showing a structure of a data frame in another embodiment of the present invention.
  • Figure 7 is a diagram showing the structure of a time slot of a data frame in another embodiment of the present invention. detailed description
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • the slot structure of the data frame in this embodiment is as shown in Fig. 2, and each solid line in the figure represents a time slot.
  • the data frame shown in FIG. 2 includes a plurality of downlink time slots, one protection time slot, and a plurality of uplink time slots in sequence, and a time slot for carrying the synchronization signal after the first downlink time slot.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the time slot for carrying the synchronization symbol may carry primary synchronization channel information and secondary synchronization channel information. It can be seen from Fig. 2 that there are multiple downlink time slots between the synchronization symbol and the uplink time slot, so even if the power boost is required, the interference to the uplink time slot is not too large.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the time slot carrying the synchronization symbol.
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • the slot structure of the data frame in this embodiment is as shown in FIG. 3, and each solid line in the figure represents one slot.
  • the data frame shown in FIG. 3 sequentially includes a plurality of downlink time slots, one protection time slot, and a plurality of uplink time slots.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the broken line in the first downlink time slot indicates the position of the synchronization symbol.
  • the synchronization symbol occupies the rear tail position of the first downlink time slot, and then is followed by several downlink time slots, guard time slots and several uplink time slots.
  • the location in the first downlink time slot carrying the synchronization signal may be the last one or more data symbols of the time slot, or one or more data symbols near the last position of the time slot.
  • the first downlink time slot can carry N data symbols
  • the Nth data symbol, or the Nth and the N1 data symbols, or N1th and N-2th data symbols are used to carry synchronization symbols.
  • the time slot for carrying the synchronization symbol may carry primary synchronization channel information and secondary synchronization channel information. As can be seen from FIG. 3, there are multiple downlink time slots between the synchronization symbol and the uplink time slot. Therefore, even if power boosting is required, the synchronization symbol does not interfere too much with the uplink time slot.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the data symbols carrying the synchronization symbols.
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • FIG. 4 A schematic diagram of the slot structure of the data frame in this embodiment is shown in FIG. 4, and each solid line in the figure represents a slot.
  • the data frame shown in FIG. 4 sequentially includes a plurality of downlink time slots, one guard time slot, and a plurality of uplink time slots.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the dashed line in the second downlink time slot in the figure indicates the position of the synchronization symbol.
  • the synchronization symbol occupies the first position of the second downlink time slot, followed by the downlink time slot, the guard interval and the uplink time slot.
  • the location in the second downlink time slot carrying the synchronization signal may be the first one or more data symbols of the time slot, or one or more data symbols near the beginning of the time slot. For example, if the second downlink time slot can carry N data symbols, the 1st data symbol, or the 1st and 2nd data symbols, or the 2nd and 3rd data symbols, are used to carry the synchronization symbols. .
  • the time slot for carrying the synchronization symbol may carry primary synchronization channel information and secondary synchronization channel information.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the data symbols carrying the synchronization symbols.
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • FIG. 5 A schematic diagram of the slot structure of the data frame in this embodiment is shown in FIG. 5, and each solid line in the figure represents a slot.
  • the data frame shown in FIG. 5 sequentially includes a plurality of downlink time slots, one protection time slot, and a plurality of uplink time slots.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the dotted line in a certain downlink slot in the figure indicates the position of the synchronization symbol.
  • the synchronization symbol occupies the end position of a downlink time slot (but not the last downlink time slot), followed by the downlink time slot, the guard interval and the uplink time slot.
  • the location of the downlink time slot carrying the synchronization symbol carrying the synchronization signal may be the last one or more data symbols of the time slot, or one or more data symbols near the last position of the time slot. For example, if the downlink time slot can carry N data symbols, the Nth data symbol, or the Nth and N-1th data symbols, or the N-1th and N-2th data symbols, To carry the synchronization symbol.
  • the time slot for carrying the synchronization symbol may carry primary synchronization channel information and secondary synchronization channel information.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the data symbols carrying the synchronization symbols.
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • FIG. 6 A schematic diagram of the slot structure of the data frame in this embodiment is shown in FIG. 6, and each solid line table in the figure Show a time slot.
  • the data frame shown in FIG. 6 sequentially includes a plurality of downlink time slots, one protection time slot, and a plurality of uplink time slots.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the dotted line in a certain downlink slot in the figure indicates the position of the synchronization symbol.
  • the synchronization symbol occupies the first position of a certain downlink time slot, and then is followed by a downlink time slot, a guard interval and an uplink time slot.
  • the downlink time slot carrying the synchronization signal may be any one of the downlink time slots, including the last downlink time slot.
  • the location in the downlink time slot carrying the synchronization symbol carrying the synchronization signal may be the first one or more data symbols of the time slot, or one or more data symbols near the beginning of the time slot. For example, if the downlink time slot can carry N data symbols, the first data symbol, or the 1st and 2nd data symbols, or the 2nd and 3rd data symbols, are used to carry the synchronization symbols.
  • the time slot for carrying the synchronization symbol may carry primary synchronization channel information and secondary synchronization channel information.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the data symbols carrying the synchronization symbols.
  • interference is caused by changing the arrangement positions of the uplink and downlink time slots, and the bearer positions of the synchronization symbols (the synchronization symbols may be composed of one or more OFDM symbols).
  • FIG. 7 A schematic diagram of the slot structure of the data frame in this embodiment is shown in FIG. 7, and each solid line in the figure represents one slot.
  • the data frame shown in FIG. 7 sequentially includes a plurality of downlink time slots, one protection time slot, and a plurality of uplink time slots.
  • the length of the guard slot can be the same as the length of the guard slot in the existing system.
  • the dotted line in a certain downlink slot in the figure indicates the position of the synchronization symbol.
  • the synchronization symbol occupies the head and tail positions of some two adjacent downlink time slots.
  • the location of the downlink time slot carrying the synchronization symbol carrying the synchronization signal may be the last one of the previous downlink time slots of the two adjacent downlink time slots.
  • the data symbols used to carry the synchronization signal may be consecutively arranged or discontinuously arranged.
  • resources other than the resources occupied by the synchronization signal may be used to carry other data, such as user data or control information, in the data symbols carrying the synchronization symbols.
  • An embodiment of the present invention further provides a data information sending apparatus, where the apparatus includes: a setting module and a sending module, where
  • a setting module configured to set a data frame, where the data frame includes at least one downlink time slot, a protection time slot, and at least one uplink time slot in sequence; the setting module is also at a beginning portion of the downlink time slot, or is not in the uplink time slot Bearer synchronization information is set at an end portion of an adjacent downlink time slot or between two adjacent downlink time slots;
  • the sending module is configured to send the data frame set by the setting module.
  • the setting module of the above data information transmitting apparatus may include a first setting submodule or a second setting submodule. among them,
  • the first setting sub-module is configured to set bearer synchronization information in one or more data symbols at the beginning of the downlink time slot.
  • the sub-module is further configured to carry other data, such as user data or control information, with resources other than the resources occupied by the synchronization information in the data symbols carrying the synchronization information.
  • the second setting sub-module is configured to set bearer synchronization information in one or more data symbols at the end of the downlink time slot.
  • the sub-module is further configured to carry other data, such as user data or control information, with resources other than the resources occupied by the synchronization information in the data symbols carrying the synchronization information.
  • the setting module of the data information transmitting apparatus may further include a third setting submodule, configured to set a time slot between two adjacent downlink time slots, and carry the synchronization through the time slot. Information.
  • the third setting sub-module is further configured to carry other data, such as user data or control information, with resources other than the resources occupied by the synchronization information in the time slot carrying the synchronization information.
  • the setting module of the data information transmitting apparatus includes a fourth setting submodule, where the fourth setting submodule is configured to set bearer synchronization information in an end portion of a previous one of the adjacent two downlink time slots. Part of the information, the remaining part of the information carrying the synchronization information is set at the beginning of the latter downlink time slot.
  • the fourth setting submodule may carry one or more data symbols at an end portion of a previous downlink time slot, and one or more data symbols at a beginning portion of a subsequent downlink time slot. Synchronization information.
  • the fourth setting sub-module is further configured to carry other data, such as user data or control information, with resources other than the resources occupied by the synchronization information in the data symbols carrying the synchronization information.
  • the synchronization symbol of the system is transmitted as far as possible from the uplink time slot, and the power consumption of the synchronization symbol can be reduced when the GP overhead and other resource consumption are not increased.
  • the interference of other base stations on the uplink received signals of the base station of the cell reduces the requirement on the GP length, thereby reducing the overhead of the system.

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

Abstract

L'invention concerne un procédé et un appareil de transmission d'informations de données, mis en œuvre selon les étapes suivantes: lorsqu'un terminal de transmission de signal transmet une trame de données porteuse d'informations de données, cette trame de données comprend à son tour au moins un intervalle de temps de liaison descendante, une période de garde, et au moins un intervalle de temps de liaison montante; le terminal de transmission de signal transmet des informations de synchronisation au début de l'intervalle de temps de liaison descendante, à la fin de l'intervalle de temps de liaison descendante non adjacent à l'intervalle de temps de liaison montante, ou entre deux intervalles de temps de liaison descendante adjacents.
PCT/CN2008/001792 2007-10-23 2008-10-23 Procédé et appareil de transmission d'informations de données WO2009062388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007101762479A CN101420263A (zh) 2007-10-23 2007-10-23 一种数据信息发送方法及其装置
CN200710176247.9 2007-10-23

Publications (1)

Publication Number Publication Date
WO2009062388A1 true WO2009062388A1 (fr) 2009-05-22

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WO (1) WO2009062388A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101998607B (zh) 2009-08-31 2013-07-31 中国移动通信集团公司 上行时隙引入下行传输辅同步信号的方法、系统及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1346550A (zh) * 1999-04-09 2002-04-24 西门子公司 使用户台同步的方法和无线通信系统
CN1452420A (zh) * 2002-04-19 2003-10-29 华为技术有限公司 一种基于时分双工的无线通信方法
WO2007003071A1 (fr) * 2005-07-06 2007-01-11 Zte Corporation Procédé d’établissement de synchronisation de liaison ascendante reposant sur la technologie de transmission unifiée et matrice de transmission idoine
CN1917407A (zh) * 2005-08-17 2007-02-21 展讯通信（上海）有限公司 一种TD－SCDMA系统DwPCH和UpPCH时隙结构的组成方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1346550A (zh) * 1999-04-09 2002-04-24 西门子公司 使用户台同步的方法和无线通信系统
CN1452420A (zh) * 2002-04-19 2003-10-29 华为技术有限公司 一种基于时分双工的无线通信方法
WO2007003071A1 (fr) * 2005-07-06 2007-01-11 Zte Corporation Procédé d’établissement de synchronisation de liaison ascendante reposant sur la technologie de transmission unifiée et matrice de transmission idoine
CN1917407A (zh) * 2005-08-17 2007-02-21 展讯通信（上海）有限公司 一种TD－SCDMA系统DwPCH和UpPCH时隙结构的组成方法

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