WO2017193869A1 - Procédé et dispositif destinés à transmettre des informations de système - Google Patents

Procédé et dispositif destinés à transmettre des informations de système Download PDF

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Publication number
WO2017193869A1
WO2017193869A1 PCT/CN2017/083087 CN2017083087W WO2017193869A1 WO 2017193869 A1 WO2017193869 A1 WO 2017193869A1 CN 2017083087 W CN2017083087 W CN 2017083087W WO 2017193869 A1 WO2017193869 A1 WO 2017193869A1
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Prior art keywords
offset
sending
window
system message
transmission
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Chinese (zh)
Inventor
艾建勋
戴博
刘静
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

Definitions

  • This document relates to, but is not limited to, the field of communications, and in particular, to a method and apparatus for transmitting system messages.
  • Machine to Machine (M2M) communication is an important subject of the fifth generation of mobile communication technology (5th Generation, 5G), and an important application field for wireless communication in the future.
  • 5G fifth generation of mobile communication technology
  • 3GPP 3rd Generation Partnership Project
  • NB-IoT NarowBand Internet of Things
  • KHz KHz
  • the system information (SI) is a common message of the cell, and is used to indicate the system parameters of the cell.
  • the user equipment (UE) staying in the cell must maintain the consistency of the latest system information; the system information is usually carried in the cell. Sent on the broadcast channel.
  • the system information is divided into two categories: a master information block (MIB) and a system information block (SIB).
  • MIB master information block
  • SIB system information block
  • SIB system information block
  • SIB1 carries scheduling information of the composed SI, and the scheduling information is used to indicate the number of the system information block included in each SI, the transmission period, and the time window in which the UE receives these SIs.
  • Each SI has its transmission period. During the interval of each SI transmission period, the system configures a transmission window for each SI, called SI-Window.
  • the SI is scheduled to be sent in this window, and the SI-windows of multiple SIs are sequentially arranged and transmitted in the order of configuration.
  • the embodiment of the invention provides a method and a device for transmitting a system message, which can solve at least the problem that the system message period and the window configuration are consistent, and there is mutual interference when the inter-cell system message is sent.
  • a method for transmitting a system message includes: sequentially transmitting, in a corresponding sending period, a system message sent by a cell according to a preset sending sequence in a corresponding sending period, where the system message is sent.
  • the transmission window and/or the starting position of the radio frame within the transmission window are offset.
  • a system for transmitting a system message including: a sending module, configured to sequentially arrange system messages sent by a cell according to a preset sending sequence in a corresponding sending period through a sending window. Transmit, wherein the transmission window of the system message and/or the starting position of the radio frame within the transmission window are offset.
  • a system message transmission apparatus including: a storage medium and a processor; the storage medium storing program code; the processor according to a stored program in the storage medium
  • the code When executed, the following operations are performed: the system messages sent by the multiple cells are sequentially sent in the corresponding sending sequence through the sending window in the corresponding sending period, where the sending start positions of the multiple system messages are offset;
  • the sending start position includes any one or more of the following: a start position of the transmission window, and a start position of the radio frame in the transmission window.
  • Figure 1 is a schematic diagram of an SI-window of a system message
  • FIG. 2 is a schematic diagram of radio frame resources configured according to a repetition mode of system messages in NB-IoT technology
  • Example 4 is a schematic diagram of an SI-window technique of implementing the system message of Example 1;
  • Example 5 is a schematic diagram of an SI-window technique of implementing the system message of Example 2.
  • Example 8 is a schematic diagram of an SI-window technique of implementing the system message of Example 5;
  • the SI is transmitted in the SI-Window according to the following method.
  • the system configures each radio to periodically transmit the radio frame (Radio Frame) used in the SI-Window, and specifies by the repetition pattern.
  • the SI uses the subframe resources of the first radio frame in every N radio frames in its SI-Window. And configuring a downlink subframe, a downlink subframe, and a wireless subframe that can be used in the radio frame, and agreeing that in the radio frame, the radio subframe occupied by the specific system control information is an invalid subframe.
  • Such specific system control information includes a Physical Broadcast Channel (PBCH), a Primary Synchronization Symbol (PSS), a Secondary Synchronization Symbol (SSS), and a System Information Block Type One (SIB1).
  • PBCH Physical Broadcast Channel
  • PSS Primary Synchronization Symbol
  • SSS Secondary Synchronization Symbol
  • SIB1 System Information Block Type One
  • FIG. 2 it is a schematic diagram of a wireless subframe resource configured by a system message (SI) by the above method.
  • SI system message
  • the network side repeatedly transmits the same information, and the UE receives and combines to achieve enhancement.
  • the purpose of signal reception quality Therefore, in the transmission of the system message, the base station repeatedly transmits the SI in the radio subframe that can be used by the SI to enhance the quality of the received SI of the UE.
  • the technical solution of the present application can be applied to a scenario in which multiple cells need to send system messages.
  • the technical solution of the present application can avoid mutual interference when sending system messages between cells.
  • FIG. 3 is a flowchart of a method for transmitting a system message according to the embodiment. As shown in FIG. 3, the process includes the following steps. Step:
  • Step S302 The system messages sent by the cell are sequentially arranged and sent according to a preset sending sequence in a corresponding sending period, where the sending start position of the system message is offset; the sending start position includes any of the following One or more of: the starting position of the transmission window, the starting position of the radio frame within the transmission window.
  • This step can be, but is not limited to, performed by a base station.
  • the sending system message is sequentially arranged in the corresponding sending order by the sending window in the corresponding sending period.
  • the transmission window SI-window of the system message SI can be offset from the start position of the periodicity of the transmission period, or the radio frame relative to the transmission window SI- of the transmission system message SI can be set in the transmission window SI-window.
  • the starting position of the window is offset.
  • the transmission window of each system message in any one or more system messages is offset by the same offset at the beginning of the corresponding transmission period.
  • Example 1 shown in FIG. The base station is configured to be in the time interval of the transmission period periodicity of the system message SI, and the start offset of the transmission window SI-window of the system message SI is offset. Then, the SI-window of the system message SI transmitted during the periodicity interval of the period starts from the initial offset offset and is sequentially arranged in the time interval of the system message period according to the transmission order.
  • the transmission period periodicity of the first system message SI-1 is P1
  • the periodicity of the second system message SI-2 is P2, where P2 is twice that of P1
  • the order of transmission is SI-1, SI-2.
  • the offset offset is performed from the start position of the transmission period of the first system message SI-1, that is, the start of the transmission period.
  • the position is the starting position of the SI-window of SI-1
  • Starting from the offset offset is the starting position of the SI-window of SI-1.
  • the offsets of the first system message SI-1 and the second system message SI-2 in the above embodiment are the same.
  • the offset offset may be defined in any of the following ways:
  • the base station indicates the value of the offset Offset described by the UE through a system message.
  • the UE determines the location of the SI-Window based on the value of this offset Offset and receives a system message.
  • Example 2 is shown in FIG.
  • the periodicity interval of one SI is divided into multiple equal parts, and the SI-window of the first SI sent in the period of the periodicity starts from an initial start position of the aliquot.
  • Offset offset is defined as the plurality of The serial number of one of the equal parts. For example, if the periodicity interval of the SI is divided into T shares (T is a positive integer), and the offset offset of the SI-Window of the SI is set to M (M ⁇ T), then the periodicity time is The SI-Window of the SI starts from the first radio frame of the Mth aliquot.
  • T is a positive integer
  • M the offset offset of the SI-Window of the SI-S starts from the first radio frame of the Mth aliquot.
  • the offsets of the first system message SI-1 and the second system message SI-2 in the above embodiment are the same.
  • the unit of the offset in this embodiment example may be an integer one-half of the length of the duration.
  • the transmission period with the shortest duration may be divided into the division objects of the multiple time intervals.
  • the minimum SI periodicity of the system configuration is divided into T shares.
  • the periodicity P1 of the SI-1 is smaller than the periodicity P2 of the SI-2.
  • the dividing the SI periodicity into the T shares may mean dividing the time interval of the minimum value P1 of the two into T equal parts.
  • the base station indicates the value of the offset offset by the system message, and the aliquot T of the SI periodicity division, or the base station indicates the aliquot T of the SI periodicity division, and determines the value of the offset offset by a predetermined method.
  • the agreed method may be as follows: the result of calculating the cell identity information is an offset value of the SI-Window of the SI in the cell.
  • the cell identity is modulo-operated for T, and the resulting result indicates that the SI-Window begins with the first aliquot in the T aliquot that divides the SI periodicity.
  • the offset of the SI-Window may be all for the first SI-Window sent in one SI periodicity interval.
  • the sending of the window of any one or more system messages according to a predetermined offset in the corresponding starting position in the sending period includes:
  • the transmission window of each system message in any one or more system messages is offset by a different offset at the starting position within the corresponding transmission period.
  • the offset of the SI-Window of each system message sent in sequence in the sending cycle is started from the starting position of the sending period (or the offset of the SI-Window is The offset value relative to the start position of the transmission cycle); that is, the start position of the SI-Window is the position after the offset is offset from the start position of the transmission cycle.
  • the base station configures its offset offset for each SI SI-window.
  • the offset offset is defined as the periodicity interval at which the SI-window of the SI is transmitted. The offset from the first radio frame of the periodicity.
  • the SI-Window offset of SI-1 is O1
  • the offset O2 begins.
  • the value of the offset offset may be an offset value in units of SFN or H-SFN, or SI-Window after dividing the periodicity into a plurality of equal parts as described in Embodiment 2.
  • the serial number of the aliquot corresponding to the starting position that is, the integer of one of the periodicity.
  • the base station may indicate the offset of the SI-Window of each SI by the system message.
  • the offset of the first system message sent in the sending period starts from a starting position of the sending period (ie, the offset of the first system message is a starting position relative to the sending period). Offset value), the offset of the subsequent system message sent during the transmission period.
  • the start position or end position of the transmission window of a previous system message is the starting point (ie, the offset of the subsequent system message is relative to the previous system message) Sending a start value or an offset value of the end position of the window), wherein the first system message is the first system message sent in the sending period, and the subsequent system messages are sequentially arranged in a predetermined order after the first system message system information.
  • the implementation example 4 shown in FIG. 7 differs from the implementation example 3 in that the offset offset of the SI-window of the first transmitted SI is defined as the time interval relative to the periodicity during the periodicity interval in which the SI is transmitted.
  • the offset value of the start position of the SI, and the offset value of the SI-window of the SI transmitted thereafter is defined as an offset value from the start position or the end position of the SI-window of the previously transmitted SI.
  • the offset offset of the SI-window of SI-1 is O1
  • the offset offset of the Window of SI-2 is O2
  • the position of the offset O2 is the start position of the SI-window of SI-2 from the start position of the SI-window of SI-1.
  • the base station may indicate the offset of the SI-Window of each SI by the system message.
  • the first radio frame used in the sending window for sending the system message is offset from the starting position of the sending window, and the other radio frame used for sending the system message is subsequently used.
  • the interval with respect to the previous radio frame is N radio frames (N is the number of radio frames included in each transmission window).
  • the offset of the first radio frame of the SI transmitted in the SI-Window relative to the start position of its SI-Window is set. That is, the base station configures the offset offset of the first radio frame for transmitting the SI relative to the start position of the SI-Window in the SI-Window, and the subsequent radio frame for transmitting the SI is compared with the previous radio frame for transmitting the SI.
  • the interval is N radio frames.
  • each N radio frames in the SI-Window are grouped, and the offset of the first radio frame for transmitting SI in each group relative to the first radio frame of each group is Offset.
  • the first radio frame for transmitting SI in each group of N radio frames is the 17th radio frame in each group of 64 radio frames.
  • the offset of the radio frame used for transmitting the system message is the length of one or more offset windows.
  • 9 is another method of implementing example 5, dividing each N consecutive radio frames in an SI-Window into a group, and then dividing each group of N radio frames into a plurality of equal divisions.
  • the offset of the radio frame transmitting the SI in each group of N radio frames is defined as the number of the plurality of aliquots, and the first radio frame of the SI is transmitted in each group of N radio frames. Is the first radio frame in the specified aliquot. That is, the offset in the method is in units of one-half of the integer of the N radio frames.
  • N radio frames are divided into 4 equal parts (offset window-1, offset window-2, offset window-3, offset window-4 in FIG. 9), and the configuration of transmitting SI is performed.
  • the position of the first radio frame is the second of the 4 equal parts, and the first radio frame transmitting the SI is the first radio frame in the second aliquot.
  • N is 64
  • the 64 radio frames are divided into 4 equal parts, then each aliquot is 16 radio frames, and the first contiguous first radio frame is the 17th radio frame, that is, The position of the first radio frame in which the SI is transmitted in the N radio frames.
  • the offset of the radio frame used to send the system message is determined according to a result obtained by performing operation on the cell identifier.
  • the base station can configure the offset of each SI through system messages, or can agree on the offset configuration of each SI as follows:
  • the base station obtains the offset of the radio frame used by the SI in the cell according to the identity information of the cell, such as the physical cell identifier PCI, or the cell identifier ID, or the cell global ID.
  • the obtaining the offset of the radio frame used by the SI in the cell by using the identifier information of the cell refers to determining the offset by performing an arithmetic operation on the cell identifier information.
  • the modulo operation is performed on the cell identification information.
  • each group of N radio frames is divided into M equal parts, and the cell identification information is modulo M, and the obtained result is the first radio frame used by the SI in the cell relative to the SI-Window. Or an offset from the starting position of the N radio frames.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A more common implementation.
  • the technical solution of the embodiment of the present invention may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM, a magnetic disk, or an optical disk), including one or more instructions.
  • the method described in the embodiment of the present invention is performed by causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.).
  • the second embodiment is a device for transmitting a system message, and the device may be used to implement the foregoing embodiment 1 and the optional implementation manner, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the device includes: a sending module 102, configured to send a system message sent by multiple cells through a sending window in a corresponding sending period.
  • the sending is sequentially arranged according to a preset sending sequence, wherein a sending start position of the plurality of system messages is offset; the sending start position includes any one or more of the following: a starting position of the sending window, and a sending window The starting position of the wireless frame.
  • the sending window of any one or more system messages is offset according to a predetermined offset in a starting position within the corresponding sending period
  • modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are respectively located in multiple processes. In the device.
  • the sending module 102 can include:
  • Determining a submodule configured to determine an offset of a transmission start position of a system message to be transmitted
  • Embodiment 3 A storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the system messages sent by the cell are sequentially arranged and sent according to a preset sending sequence in a corresponding sending period, where the sending start position of the system message is offset; the sending start position includes any one of the following One or more types: the starting position of the sending window and the starting position of the wireless frame in the sending window.
  • the transmission window of each system message is offset by the same offset at the starting position within the corresponding transmission period.
  • system message transmission is the length of one or more time intervals.
  • the storage medium is further arranged to store program code for performing the step of determining an offset of the transmission window of the system message as a result of the operation based on the cell identity.
  • the storage medium is further arranged to store program code for performing the following steps: in the case where the transmission periods of the plurality of system messages are different, the transmission period having the shortest duration is taken as the object of division.
  • the storage medium is further arranged to store program code for performing the step of: sequentially shifting the offset of each system message sent in sequence during the transmission period starting from the starting position of the transmission period.
  • the storage medium is further configured to store program code for performing the following steps: the first radio frame for transmitting the system message in the transmission window is offset from the starting position of the transmission window, and subsequently used for transmitting The interval of other radio frames of the system message relative to the previous radio frame is N radio frames.
  • the storage medium is further arranged to store program code for performing the following steps: in the case where the N radio frames are divided into a plurality of offset windows, the offset of the radio frame used to transmit the system message is The length of one or more offset windows.
  • the storage medium is further arranged to store program code for performing the following steps: the result of the operation based on the cell identity determines an offset of the radio frame used to transmit the system message.
  • the offset is an offset value in units of SFN, or H-SFN.
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a medium such as a disc or an optical disc that can store program code.
  • Embodiment 4 A system message transmission device, including: a storage medium and a processor;
  • the sending window And transmitting, by the sending window, the system messages sent by the multiple cells in a corresponding sending sequence according to a preset sending sequence, where the sending start positions of the multiple system messages are offset;
  • the sending start location includes the following Any one or more of: the starting position of the sending window and the starting position of the wireless frame in the transmitting window.
  • the sending window of any one or more system messages is offset according to a predetermined offset in a starting position within the corresponding sending period
  • the processor performs a transmission of each system message according to the stored program code in the storage medium, and the start position of the corresponding transmission period is offset by the same offset.
  • the processor performs, according to the stored program code in the storage medium, the transmission window of each system message is offset according to different offsets at a starting position in the corresponding transmission period.
  • the processor executes according to the stored program code in the storage medium, if the sending period is divided into multiple time intervals, the offset of the sending window of the system message is one or The length of multiple time intervals.
  • the processor performs, according to the stored program code in the storage medium, the transmission period with the shortest duration as the division when the transmission periods of the multiple system messages are different. Object.
  • the processor performs an offset of each system message sequentially sent in the sending period according to the stored program code in the storage medium, starting from a starting position of the sending period.
  • the radio frame used to send the system message is the length of one or more offset windows.
  • the processor determines, according to the stored program code in the storage medium, a result of calculating according to the cell identifier to determine an offset of the radio frame used to send the system message.
  • the offset is an offset value in units of SFN, or H-SFN.
  • each of the above-described modules or steps of the embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Perform the steps shown or described, or make them into integrated circuit modules, or make multiple modules or steps into a single An integrated circuit module is implemented. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules, or other data. , removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by a computer.
  • communication media typically includes computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the embodiment of the present invention solves the problem that the system message period and the window configuration are consistent, and the inter-cell system message is sent by using the system message sent by the cell in the corresponding sending period to sequentially arrange the sending scheme according to the preset sending order in the sending window.
  • the problem of mutual interference can configure different offsets for different cells, thereby reducing mutual interference during system message transmission between cells, and improving configuration flexibility.

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif destinés à transmettre des informations de système. Le procédé consiste : à trier et à transmettre de façon séquentielle, dans une période de transmission correspondante, conformément à une séquence de transmission prédéfinie, et au moyen d'une fenêtre de transmission, des informations de système transmises par une cellule, un déplacement d'une position de démarrage de transmission des informations de système survenant, et la position de démarrage de transmission comprenant l'une quelconque des étapes suivantes : une position de démarrage de la fenêtre de transmission, ou une position de démarrage d'une trame radio dans la fenêtre de transmission.
PCT/CN2017/083087 2016-05-13 2017-05-04 Procédé et dispositif destinés à transmettre des informations de système Ceased WO2017193869A1 (fr)

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CN112586030A (zh) * 2018-05-30 2021-03-30 华为技术有限公司 一种系统信息块sib传输方法及设备
CN112586030B (zh) * 2018-05-30 2022-11-11 华为技术有限公司 一种系统信息块sib传输方法及设备
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CN116193592A (zh) * 2021-11-25 2023-05-30 维沃移动通信有限公司 系统信息传输方法、装置、终端及接入网设备

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