WO2019191935A1 - Procédé et dispositif de transmission de blocs de diffusion synchrone - Google Patents

Procédé et dispositif de transmission de blocs de diffusion synchrone Download PDF

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Publication number
WO2019191935A1
WO2019191935A1 PCT/CN2018/081899 CN2018081899W WO2019191935A1 WO 2019191935 A1 WO2019191935 A1 WO 2019191935A1 CN 2018081899 W CN2018081899 W CN 2018081899W WO 2019191935 A1 WO2019191935 A1 WO 2019191935A1
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WO
WIPO (PCT)
Prior art keywords
synchronous broadcast
broadcast blocks
blocks
synchronous
time domain
Prior art date
Application number
PCT/CN2018/081899
Other languages
English (en)
Chinese (zh)
Inventor
刘洋
Original Assignee
北京小米移动软件有限公司
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 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2018/081899 priority Critical patent/WO2019191935A1/fr
Priority to CN201880000500.1A priority patent/CN108513719B/zh
Publication of WO2019191935A1 publication Critical patent/WO2019191935A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a synchronous broadcast block.
  • the industry recently conducted a research on the unlicensed spectrum of 5G (5th generation communication system), and proposed a scenario to support separate networking of unlicensed cells.
  • the first step is to consider the design of the synchronous broadcast block (SS/PBCH Block, hereinafter abbreviated as SSB).
  • SSB synchronous broadcast block
  • the SSB is generally not continuously transmitted, which causes the NR-U base station to perform frequent short detection to detect whether there are free resources for SSB transmission.
  • Embodiments of the present invention provide a method and apparatus for transmitting a synchronous broadcast block.
  • the technical solution is as follows:
  • a method for transmitting a synchronous broadcast block including:
  • the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks
  • the beam scan transmits the set of synchronous broadcast blocks when it is detected that the channel is idle at the current transmission time.
  • the technical solution provided by the embodiment of the present invention may include the following beneficial effects: the present embodiment continuously sends a plurality of synchronous broadcast blocks each time the synchronous broadcast block is sent, so as to reduce the number of times the network side detects idle available resources, and may be better. Coexist with WLAN (Wireless Local Area Network) systems.
  • WLAN Wireless Local Area Network
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • the technical solution provided by the embodiment of the present invention may include the following beneficial effects: in this embodiment, the ratio of the duration of a group of synchronous broadcast blocks to the total duration of 1 ms is within a suitable range, which can coexist better with the WLAN system, and Try not to affect the transmission of uplink information.
  • multiple simultaneous broadcast blocks in a group are consecutively symbolically.
  • the technical solution provided by the embodiment of the present invention may include the following beneficial effects: the multiple synchronous broadcast blocks in a group in this embodiment are consecutively symbolized, the number of detections of the base station may be reduced, and the gap between the synchronous broadcast blocks may be reduced. Can coexist better with WLAN systems.
  • one isochronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • the technical solution provided by the embodiment of the present invention may include the following beneficial effects:
  • the embodiment provides a solution that multiple synchronous broadcast blocks occupy time domain symbols, and can be flexibly configured.
  • the set of synchronous broadcast blocks when one synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcasts The block includes 4 or 8 simultaneous broadcast blocks;
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.
  • the present embodiment provides that the time domain width of the synchronous broadcast block is different, and the number of synchronous broadcast blocks included in a group of synchronous broadcast blocks may also have corresponding changes. In order to better coexist with the WLAN system.
  • an apparatus for transmitting a synchronous broadcast block including:
  • a detecting module configured to detect whether a channel is idle at a current sending time, to send a set of synchronous broadcast blocks; and the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks;
  • a sending module configured to: when the channel is idle at the current transmission time, the beam scan sends the set of synchronous broadcast blocks.
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • multiple simultaneous broadcast blocks in a group are consecutively symbolically.
  • one isochronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • the set of synchronous broadcast blocks when one synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcasts The block includes 4 or 8 simultaneous broadcast blocks;
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.
  • an apparatus for transmitting a synchronous broadcast block including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks
  • the beam scan transmits the set of synchronous broadcast blocks when it is detected that the channel is idle at the current transmission time.
  • a computer readable storage medium having stored thereon computer instructions for implementing the above method of transmitting a synchronous broadcast block when executed by a processor.
  • FIG. 1 is a flowchart of a method of transmitting a synchronous broadcast block, according to an exemplary embodiment.
  • FIG. 2 is a schematic diagram of a synchronous broadcast block according to an exemplary embodiment.
  • FIG. 3 is a schematic diagram of a synchronous broadcast block according to a specific embodiment.
  • FIG. 4 is a schematic diagram of a synchronous broadcast block according to an exemplary embodiment.
  • FIG. 5 is a block diagram of an apparatus for transmitting a synchronous broadcast block, according to a first embodiment.
  • FIG. 6 is a block diagram of an apparatus suitable for transmitting a synchronous broadcast block, according to an exemplary embodiment.
  • the industry proposes to implement an unlicensed spectrum independent networking, that is, independent of a new air interface (NR) cell, and all functions such as initial access by a cell in an unlicensed band.
  • NR new air interface
  • the transmission of synchronous broadcast blocks needs to be implemented in an unlicensed spectrum cell.
  • the SSB is generally not continuously transmitted, which causes the base station to perform frequent short detection to detect whether there are idle resources for SSB transmission.
  • the delay of the second SSB transmission may affect the coexistence of the mobile communication system and the WLAN system, and does not conform to the fairness principle of the WLAN system.
  • a set of synchronous broadcast blocks are transmitted at a time, the base station is frequently shortly detected, and the delayed transmission synchronous broadcast block is reduced. Can coexist better with WLAN systems.
  • FIG. 1 is a flowchart of a method for transmitting a synchronous broadcast block, which is used for a network access device such as a base station, according to an exemplary embodiment. As shown in FIG. 1, the method includes the following steps 101-102.
  • step 101 it is detected whether the current transmission time channel is idle to send a set of synchronous broadcast blocks;
  • the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks;
  • the beam scan transmits the set of synchronous broadcast blocks when it is detected that the channel is idle at the current transmission time.
  • step 101 may be continued to detect for the next set of synchronous broadcast blocks or the next subframe.
  • the base station detects the current transmission time channel of a group of synchronous broadcast blocks, and detects whether the channel is idle. If idle, a set of synchronous broadcast blocks will be sent. The number of base station detections is reduced, which saves system power consumption. Multiple synchronous broadcast blocks form a group, which can better coexist with the WLAN system and satisfy the fairness principle of the WLAN system as much as possible.
  • the detection in this embodiment can employ a short detection such as 25 ⁇ s, which is suitable for short detection of the discovery signal.
  • the synchronization signal, the reference signal, and the like in the synchronous broadcast block belong to the discovery signal.
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • the present embodiment provides a relatively suitable range of ratios to balance the needs of various aspects.
  • multiple simultaneous broadcast blocks in a group are consecutively symbolically.
  • a plurality of synchronous broadcast blocks in a group are consecutively symbolized, and the transmission delay can be reduced as much as possible, and coexisting better with the WLAN system.
  • one synchronous broadcast block occupies four time domain symbols, and two synchronous broadcast block time slots are consecutive, occupying a total of eight time domain symbols, forming a group.
  • a set of synchronous broadcast blocks are transmitted in one time slot.
  • the starting position of a group of synchronous broadcast blocks in one time slot can be flexibly configured by the base station.
  • multiple sets of synchronous broadcast blocks may be transmitted in one time slot, and the greater the number of intra-synchronous broadcast blocks, the larger the transmission gap between groups may be, so as to better coexist with the WLAN system, and Convenient for uplink information transmission.
  • one isochronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • This embodiment provides a structure of a plurality of synchronous broadcast blocks, and one synchronous broadcast block can occupy four time domain symbols. Considering the system bandwidth requirement, the bandwidth occupied by one signal block is as much as 80% of the total bandwidth. Therefore, in this embodiment, one synchronous broadcast block can occupy two time domain symbols, as shown in FIG. 3 and FIG.
  • the synchronous broadcast block includes PSS, SSS, broadcast information, and DMRS (Demodulation Reference Signal).
  • the PSS is the primary synchronization signal
  • the SSS is the secondary synchronization signal.
  • the broadcast information is carried on a Physical Broadcast Channel (PBCH).
  • PBCH Physical Broadcast Channel
  • the synchronous broadcast block occupies two time domain symbols, reducing the occupied time domain symbols to increase the occupied frequency domain bandwidth.
  • the set of synchronous broadcast blocks when one synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcasts The block includes 4 or 8 simultaneous broadcast blocks.
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.
  • the low frequency band refers to a frequency band less than or equal to 6 GHz.
  • the frequency band above 6 GHz is a high frequency band. 1ms in the high band contains more time domain symbols, so more simultaneous broadcast blocks can be transmitted at once.
  • a synchronous broadcast block occupies 2 time domain symbols, more time domain resources are saved, so more synchronous broadcast blocks can be continuously transmitted, and the probability of user equipment synchronization is improved.
  • FIG. 5 is a block diagram of an apparatus for transmitting a synchronous broadcast block, which may be implemented as part or all of an electronic device by software, hardware, or a combination of both, according to an exemplary embodiment.
  • the apparatus for transmitting a synchronous broadcast block includes a detecting module 501 and a transmitting module 502; wherein:
  • the detecting module 501 is configured to detect whether the current transmission time channel is idle to send a set of synchronous broadcast blocks; and the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks.
  • the sending module 502 is configured to: when the channel is idle at the current transmission time, the beam scan sends the set of synchronous broadcast blocks.
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • multiple simultaneous broadcast blocks in a group are consecutively symbolically.
  • one isochronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • the set of synchronous broadcast blocks when one synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcasts The block includes 4 or 8 simultaneous broadcast blocks;
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.
  • FIG. 6 is a block diagram of an apparatus 600 for transmitting a synchronous broadcast block, according to an exemplary embodiment.
  • device 600 can be provided as a computer.
  • apparatus 600 includes a processing component 622 that further includes one or more processors, and memory resources represented by memory 632 for storing instructions executable by processing component 622, such as an application.
  • An application stored in memory 632 can include one or more modules each corresponding to a set of instructions.
  • processing component 622 is configured to execute instructions to perform the method described above to transmit a synchronous broadcast block.
  • Device 600 may also include a power supply component 626 configured to perform power management of device 600, a wired or wireless network interface 650 configured to connect device 600 to the network, and an input/output (I/O) interface 658.
  • Device 600 can operate based on an operating system stored in memory 632, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
  • an apparatus for transmitting a synchronous broadcast block comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks
  • the beam scan transmits the set of synchronous broadcast blocks when it is detected that the channel is idle at the current transmission time.
  • the above processor can also be configured to:
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • the above processor can also be configured to:
  • the above processor can also be configured to:
  • a synchronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • the above processor can also be configured to:
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 4 or 8 Simultaneous broadcast blocks;
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.
  • a computer readable storage medium when instructions in the storage medium are executed by a processor of a device, to enable a device to perform the method of transmitting a synchronous broadcast block as described above, the method comprising:
  • the set of synchronous broadcast blocks includes at least two synchronous broadcast blocks
  • the beam scan transmits the set of synchronous broadcast blocks when it is detected that the channel is idle at the current transmission time.
  • the instructions in the storage medium may further include:
  • the ratio of the number of time domain symbols occupied by a group of synchronous broadcast blocks to the number of time domain symbols included in 1 ms does not exceed a preset ratio range; the ratio ranges from 50% to 70%.
  • the instructions in the storage medium may further include:
  • the instructions in the storage medium may further include:
  • a synchronous broadcast block occupies 2 time domain symbols or 4 time domain symbols.
  • the instructions in the storage medium may further include:
  • the set of synchronous broadcast blocks When one synchronous broadcast block occupies 4 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes two or 4 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 4 or 8 Simultaneous broadcast blocks;
  • the set of synchronous broadcast blocks When a synchronous broadcast block occupies 2 time domain symbols, for a low frequency band, the set of synchronous broadcast blocks includes 4 or 8 synchronous broadcast blocks; for a high frequency band, the set of synchronous broadcast blocks includes 8 or 16 Synchronous broadcast blocks.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission de blocs de diffusion synchrone. Le procédé consiste à : détecter si un canal au moment d'envoi actuel est inactif de façon à envoyer un groupe de blocs de diffusion synchrone, le groupe de blocs de diffusion synchrone comprenant au moins deux blocs de diffusion synchrone; lorsqu'il est détecté que le canal au moment d'envoi actuel est au repos, envoyer le groupe de blocs de diffusion synchrone au moyen d'un balayage de faisceau.
PCT/CN2018/081899 2018-04-04 2018-04-04 Procédé et dispositif de transmission de blocs de diffusion synchrone WO2019191935A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/081899 WO2019191935A1 (fr) 2018-04-04 2018-04-04 Procédé et dispositif de transmission de blocs de diffusion synchrone
CN201880000500.1A CN108513719B (zh) 2018-04-04 2018-04-04 传输同步广播块的方法及装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/081899 WO2019191935A1 (fr) 2018-04-04 2018-04-04 Procédé et dispositif de transmission de blocs de diffusion synchrone

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WO2019191935A1 true WO2019191935A1 (fr) 2019-10-10

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Publication number Priority date Publication date Assignee Title
CN110943818A (zh) * 2018-09-25 2020-03-31 维沃移动通信有限公司 配置方法、接收方法、终端及网络侧设备
CN112740599A (zh) 2018-09-27 2021-04-30 Oppo广东移动通信有限公司 一种信息处理方法、设备及存储介质

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN101257714A (zh) * 2008-04-08 2008-09-03 浙江大学 认知无线电系统的跨层自适应并行信道分配方法
CN104796920A (zh) * 2014-01-16 2015-07-22 电信科学技术研究院 数据传输方法、基站以及终端设备
CN106612540A (zh) * 2015-10-23 2017-05-03 华为技术有限公司 下行同步的方法、用户设备以及基站
CN107124767A (zh) * 2016-02-25 2017-09-01 中兴通讯股份有限公司 一种信号配置方法、信息处理方法及装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105991211B (zh) * 2015-01-28 2020-01-21 中国移动通信集团公司 非授权频段下的参考信号发送方法、接收方法及装置
CN106793058B (zh) * 2016-12-30 2019-03-05 展讯通信（上海）有限公司 处理同步信号块的方法、基站及用户设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257714A (zh) * 2008-04-08 2008-09-03 浙江大学 认知无线电系统的跨层自适应并行信道分配方法
CN104796920A (zh) * 2014-01-16 2015-07-22 电信科学技术研究院 数据传输方法、基站以及终端设备
CN106612540A (zh) * 2015-10-23 2017-05-03 华为技术有限公司 下行同步的方法、用户设备以及基站
CN107124767A (zh) * 2016-02-25 2017-09-01 中兴通讯股份有限公司 一种信号配置方法、信息处理方法及装置

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CN108513719B (zh) 2020-11-13

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