WO2019080122A1 - Procédé et dispositif de transmission et de réception d'informations de canal - Google Patents

Procédé et dispositif de transmission et de réception d'informations de canal

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Publication number
WO2019080122A1
WO2019080122A1 PCT/CN2017/108123 CN2017108123W WO2019080122A1 WO 2019080122 A1 WO2019080122 A1 WO 2019080122A1 CN 2017108123 W CN2017108123 W CN 2017108123W WO 2019080122 A1 WO2019080122 A1 WO 2019080122A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
frequency point
time unit
information
broadcast channel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/108123
Other languages
English (en)
Chinese (zh)
Inventor
张武荣
李振宇
南杨
韩金侠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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
Priority to PCT/CN2017/108123 priority Critical patent/WO2019080122A1/fr
Publication of WO2019080122A1 publication Critical patent/WO2019080122A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for transmitting and receiving channel information.
  • unlicensed spectrum resources are larger than licensed spectrum resources, and if the unlicensed spectrum can be effectively utilized, the spectrum efficiency of wireless communication can be greatly improved.
  • unlicensed spectrum resources can be utilized based on Enhanced Machine Type Communication (eMTC) technology.
  • eMTC Enhanced Machine Type Communication
  • the eMTC technology is deployed on a cellular network.
  • the user equipment can directly access the existing Long Term Evolution (LTE) network by supporting 1.4MHz RF and baseband bandwidth.
  • LTE Long Term Evolution
  • the frame structure of the eMTC is as shown in FIG. 1.
  • Each radio frame has a length of 10 ms, and each frame includes 10 subframes, and each subframe includes 2 slots.
  • each time slot contains 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols; if it is an extended CP, each time slot contains 6 OFDM symbols.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the eMTC divides the broadband into a plurality of 1.4 MHz narrowbands (NBs) in the frequency domain, and each narrowband includes six resource blocks (Resource Blocks, RBs), each of which occupies a bandwidth of 180 kHz. Contains 12 subcarriers with a subcarrier spacing of 15 kHz.
  • FIG. 3 is a schematic structural diagram of frame 0 of the eMTC.
  • the first three symbols of the frame 0 are physical downlink control channels (PDCCHs).
  • the first narrowband on the frequency band ie, the first 6RB
  • the second narrowband ie, the middle 6RB
  • the synchronization channel includes a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcasting Channel
  • ETSI imposes the following constraints on devices operating on the above channels: 1.
  • the transmission power of each channel does not exceed 500 mW. 2.
  • the duty cycle of the base station side is not more than 10%. 3.
  • the duty ratio on the UE side is not more than 2.5%; on channel 4, the duty ratio on the UE side is not more than 10%.
  • DRS Discovery Reference Signal
  • the embodiment of the present invention provides a method and an apparatus for transmitting channel information, and a method and an apparatus for receiving channel information, which can solve the problem that the transmission time of each channel is shortened by transmitting or receiving DRS in a time division manner at the same frequency point, thereby affecting the system.
  • the problem of coverage capabilities can solve the problem that the transmission time of each channel is shortened by transmitting or receiving DRS in a time division manner at the same frequency point, thereby affecting the system.
  • the embodiment of the present application provides a method for receiving channel information, including: receiving, by a terminal device, information sent on a synchronization channel at a first frequency point and a first time unit; the terminal device is at a second frequency point and a second The information transmitted on the broadcast channel is received on the time unit; wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the terminal device receives the information transmitted on the broadcast channel and the synchronization channel in a time division manner at the same frequency point, and shortens the information transmitted on the receiving broadcast channel and the synchronization channel under the limitation of the duty ratio. The length of time reduces the coverage of the system.
  • the terminal device may receive information sent on the broadcast channel and the synchronization channel at different time units and different frequency points.
  • the terminal device receives the information transmitted on the broadcast channel and the synchronization channel in a time division manner on the same frequency point, and the broadcast channel and the synchronization channel respectively occupy 5% of the transmission duration at the frequency point.
  • the terminal device receives the information transmitted on the broadcast channel and the synchronization channel at different time units and different frequency points, and the broadcast channel and the synchronization channel respectively occupy 10% of the transmission duration at respective frequency points. . Therefore, in the embodiment of the present application, the terminal device can repeatedly receive the information sent on the synchronization channel and the broadcast channel multiple times under the condition that the duty ratio is satisfied, thereby improving the coverage capability of the system.
  • the method further includes: determining, by the terminal device, the second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is a predefined frequency point information, or a frequency point of the broadcast channel
  • the information is the frequency point information carried in the synchronization channel.
  • the terminal device may determine the broadcast channel according to the predefined frequency point information, and receive the information sent on the broadcast channel.
  • the terminal device may determine the broadcast channel according to the frequency point information carried in the synchronization channel, and receive the information sent on the broadcast channel.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is L milliseconds (ms)
  • the transmission period of the synchronization channel or the transmission period of the broadcast channel is 10 Lms
  • L is greater than zero.
  • the value of L can be 5, 10 or 20, and the like.
  • the method further includes: the terminal device sends the uplink data on the uplink data channel, the sending time of the uplink data channel is Nms, the sending period of the uplink data channel is 40Nms, and N is greater than 0.
  • the method further comprises: the terminal device receiving the system message on the third frequency point and the first time unit, or the terminal device receiving the system message on the third frequency point and the second time unit.
  • the third frequency point is different from the first frequency point, and the third frequency point is different from the second frequency point.
  • the embodiment of the present application provides a terminal device, including: a receiving unit, configured to receive information sent on a synchronization channel on a first frequency point and a first time unit; the receiving unit is further configured to be in a second Receiving information transmitted on the broadcast channel on the frequency point and the second time unit; wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the terminal device further includes: a determining unit, configured to: determine a second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is a predefined frequency point information, or a broadcast channel
  • the frequency point information is the frequency point information carried in the synchronization channel.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is Lms
  • the transmission period of the synchronization channel or the transmission period of the broadcast channel is 10 Lms
  • L is greater than 0.
  • the terminal device further includes a sending unit, configured to: send uplink data on the uplink data channel, the sending time of the uplink data channel is Nms, the sending period of the uplink data channel is 40Nms, and N is greater than 0.
  • the receiving unit is further configured to: receive the system message on the third frequency point and the first time unit, or receive the system message on the third frequency point and the second time unit.
  • the embodiment of the present application provides a terminal device, including: a receiver, configured to receive information sent on a synchronization channel at a first frequency point and a first time unit; the receiver is further configured to be used in the second Receiving information transmitted on the broadcast channel on the frequency point and the second time unit; wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the terminal device further includes: a processor, configured to: determine, according to frequency point information of the broadcast channel, the second frequency point, where the frequency point information of the broadcast channel is predefined frequency point information, or a broadcast channel
  • the frequency point information is the frequency point information carried in the synchronization channel.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is Lms
  • the transmission period of the synchronization channel or the transmission period of the broadcast channel is 10 Lms
  • L is greater than 0.
  • the terminal device further includes a transmitter, configured to: send uplink data on the uplink data channel, the uplink data channel has a transmission duration of Nms, the uplink data channel has a transmission period of 40Nms, and N is greater than 0.
  • the receiver is further configured to: receive the system message on the third frequency point and the first time unit, or receive the system message on the third frequency point and the second time unit.
  • an embodiment of the present invention provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor is operative to execute program instructions stored in the memory such that the apparatus performs the functions of the terminal device in the above method.
  • the embodiment of the present invention provides a terminal device, which can implement the functions performed by the terminal device in the foregoing method embodiment, and the functions can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the terminal device includes a processor and a communication interface, and the processor is configured to support the terminal device to perform a corresponding function in the above method.
  • the communication interface is used to support communication between the terminal device and other network elements.
  • the terminal device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the terminal device.
  • an embodiment of the present invention provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform any one of the methods provided by the first aspect.
  • an embodiment of the present invention provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform any of the methods provided by the first aspect.
  • the embodiment of the present application provides a method for transmitting channel information, including: the network device sends information of a synchronization channel on a first frequency point and a first time unit; and the network device is in a second frequency point and a second time unit.
  • the information of the broadcast channel is transmitted; wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the broadcast channel and the synchronization channel are transmitted in the time division manner at the same frequency point. Under the limitation of the duty ratio, the transmission duration of the broadcast channel and the synchronization channel is shortened, and the coverage capability of the system is reduced.
  • Embodiments of the present application may transmit a broadcast channel and a synchronization channel at different time units and different frequency points.
  • the broadcast channel and the synchronization channel are transmitted in a time division manner at the same frequency point, and the broadcast channel and the synchronization channel can occupy 5% of the transmission duration at the frequency point, respectively.
  • the broadcast channel and the synchronization channel are transmitted at different frequency points and different time units, and the broadcast channel and the synchronization channel respectively occupy 10% of the transmission duration at respective frequency points. Therefore, the embodiment of the present application can enable the network device to repeatedly send the synchronization channel and the broadcast channel multiple times under the condition that the duty ratio is satisfied, thereby improving the coverage capability of the system.
  • the method further includes: the network device determining the second frequency point according to the frequency point information of the broadcast channel, wherein the frequency point information of the broadcast channel is the predefined frequency point information.
  • the network device may determine a broadcast channel according to the predefined frequency point information, and send information, including broadcast information and some data information, on the broadcast channel.
  • the network device may determine the broadcast channel according to the service model or the application scenario, and carry the frequency information of the broadcast channel in the synchronization channel and send the information to the terminal device, so that the terminal device can determine the broadcast according to the frequency point information carried in the synchronization channel. Channel and receive information sent on the broadcast channel.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is Lms
  • the transmission period of the synchronization channel or the transmission period of the broadcast channel is 10 Lms
  • L is greater than 0.
  • the value of L can be 5, 10 or 20, and the like.
  • the method further includes: the network device transmitting the downlink data on the downlink data channel, the transmission duration of the downlink data channel is 1/2 Lms, and the transmission period of the data channel is 5 Lms.
  • the method further comprises: the network device transmitting the system message on the third frequency point and the first time unit, or the network device transmitting the system message on the third frequency point and the second time unit.
  • the third frequency point is different from the first frequency point, and the third frequency point is different from the second frequency point.
  • a ninth aspect, the embodiment of the present application provides a network device, including: a sending unit, configured to send information of a synchronization channel on a first frequency point and a first time unit; and is further configured to use the second frequency point and the second time The information of the broadcast channel is transmitted on the unit; wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the network device further includes a determining unit, configured to: determine a second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is predefined frequency point information.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is Lms, and synchronization
  • the transmission period of the channel or the transmission period of the broadcast channel is 10Lms, and L is greater than zero.
  • the network device further includes a processor, configured to: determine a second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is predefined frequency point information.
  • the transmission duration of the synchronization channel or the transmission duration of the broadcast channel is Lms
  • the transmission period of the synchronization channel or the transmission period of the broadcast channel is 10 Lms
  • L is greater than 0.
  • the transmitter is further configured to: send downlink data on a downlink data channel, where the downlink data channel has a transmission duration of 1/2 Lms, and the data channel has a transmission period of 5 Lms.
  • the transmitter is further configured to: send a system message on the third frequency point and the first time unit, or send the system message on the third frequency point and the second time unit.
  • the embodiment of the present invention provides a network device, where the network device can implement the functions performed by the network device in the foregoing method, and the function can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present invention provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform any one of the methods provided by the first aspect.
  • an embodiment of the present invention provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any of the methods provided by the first aspect.
  • the broadcast channel and the synchronization channel are transmitted in the time division manner at the same frequency point.
  • the transmission duration of the broadcast channel and the synchronization channel is shortened, and the coverage capability of the system is reduced.
  • Embodiments of the present application may transmit a broadcast channel and a synchronization channel at different time units and different frequency points.
  • the broadcast channel and the synchronization channel are transmitted in a time division manner at the same frequency point, and the broadcast channel and the synchronization channel can occupy 5% of the transmission duration at the frequency point, respectively.
  • the broadcast channel and the synchronization channel are transmitted at different frequency points and different time units, and the broadcast channel and the synchronization channel respectively occupy 10% of the transmission duration at respective frequency points. Therefore, the embodiment of the present application can make the network set under the condition that the duty ratio is satisfied.
  • the device can repeatedly transmit the synchronization channel and the broadcast channel multiple times, which can improve the coverage capability of the system.
  • FIG. 2 is a schematic structural diagram of a narrow band of an eMTC in a frequency domain
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of interaction of a method for transmitting and receiving channel information according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a time-frequency resource of a channel according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the base station 100 can be a device that can communicate with the terminal device 200.
  • the base station may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a Wideband Code Division Multiple Access (Wideband Code).
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • Wideband Code Wideband Code Division Multiple Access
  • the base station (NodeB, NB) in the Division Multiple Access (WCDMA) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or may be a new radio access technical (New RAT or A base station in NR), or a relay station or an access point, or a base station in a future 5G network.
  • New RAT New RAT
  • a base station in NR New RAT
  • a relay station or an access point or a base station in a future 5G network.
  • the terminal device 200 may be a wireless terminal or a wired terminal.
  • the wireless terminal can be a device that provides voice and/or other service data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the wireless terminal can be a mobile terminal such as a mobile telephone (or "cellular" telephone) or a computer with a mobile terminal.
  • the wireless terminal can be a portable, pocket-sized, handheld, computer-built or in-vehicle mobile device, or can be a Personal Communication Service (PCS) phone, a cordless phone, or a Session Initiation Protocol (SIP).
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • the network device in the embodiment of the present application may be a base station, and FIG. 6 shows a schematic diagram of a simplified base station structure.
  • the base station includes a 601 part and a 602 part.
  • Section 601 is mainly used for transmitting and receiving RF signals and conversion of RF signals and baseband signals;
  • Section 602 is mainly used for baseband processing and base station control.
  • Section 601 can be generally referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • Section 602 is typically the control center of the base station and can generally be referred to as a processing unit.
  • the transceiver unit of the 601 part which may also be called a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing.
  • the device for implementing the receiving function in the 601 part may be regarded as the receiving unit, and the device for implementing the sending function is regarded as the sending unit, that is, the 601 part includes the receiving unit and the sending unit.
  • the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • Section 602 can include one or more boards, each board can include one or more processors and one or more memories for reading and executing programs in memory to implement baseband processing functions and to base stations control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards share one or more processors, or multiple boards share one or more memories, or multiple boards share one or more processes at the same time.
  • the memory and the processor may be integrated or independently.
  • the 601 portion and the 602 portion may be integrated or may be independently arranged.
  • all the functions in the 602 part may be implemented in one chip, or may be partially integrated into one chip to realize another part of the function integration in another one or more chips, which is not limited by the present invention.
  • FIG. 7 is a schematic diagram of a composition of a terminal device according to an embodiment of the present invention.
  • the terminal device may include at least one processor 71, a communication interface 72, a memory 73, and a communication bus 74.
  • the device structure shown in FIG. 7 does not constitute a limitation on the terminal device, and may include more or less components than those illustrated, or combine some components, or different component arrangements, in the embodiment of the present invention. This is not limited.
  • the processor 71 is a control center of the terminal device, and may be a processor or a collective name of a plurality of processing elements.
  • the processor 71 is a central processing unit (CPU), may be an application specific integrated circuit (ASIC), or is one or more integrated circuits configured to implement the embodiments of the present invention.
  • the processor 71 can perform various functions of the terminal device by running or executing a software program stored in the memory 73 and calling data stored in the memory 73.
  • processor 71 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • the terminal device may include a plurality of processors, such as the processor 71 and the processor 75 shown in FIG.
  • processors can be a single core processor (Single-CPU) or a multi-core processor (Multi-CPU).
  • a processor can refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the communication interface 72 is configured to communicate with other devices or communication networks, such as Ethernet, RAN, Wireless Local Area Networks (WLAN), and the like.
  • the communication interface 72 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.
  • the memory 73 can be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Rnly Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Rnly Memory
  • CD-ROM Compact Disc Read-Rnly Memory
  • disc storage device including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • the memory 73 can exist independently and is coupled to the processor 71 via a communication bus 74.
  • the memory 73 can also be integrated with the processor 71.
  • the memory 73 is used to store a software program for executing the solution provided by the embodiment of the present invention, and is controlled by the processor 71 for execution.
  • the basic process of the embodiment of the present invention may include: the network device sends information of the synchronization channel on the first frequency point and the first time unit, and the terminal device receives the information sent on the synchronization channel on the first frequency point and the first time unit.
  • the network device transmits information of the broadcast channel on the second frequency point and the second time unit, and the terminal device receives the information transmitted on the broadcast channel on the second frequency point and the second time unit.
  • the first frequency point and the second frequency point are respectively different frequency points.
  • the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2. In this application, the time unit can be a superframe.
  • the frequency domain structure of the system may be as shown in FIG. 4, and the frequency band is 865-870 MHz, and includes a total of five available channels.
  • the frame structure of the system can be referred to FIG. 1 , wherein one frame includes 10 subframes, and the duration of one subframe is 1 ms. It should be noted that the system shown in FIG. 5 may also be other frequency domain structures or frame structures, which is not limited in this application.
  • the embodiment of the invention provides a method for access control, and the network device is used as a base station as an example for description.
  • the method for transmitting channel information and the method for receiving channel information, as shown in FIG. 8, include:
  • the base station sends information of the synchronization channel on the first frequency point and the first time unit.
  • the first frequency point may be a frequency point corresponding to any available channel.
  • the first frequency point may be a frequency point corresponding to the channel 4.
  • the transmission duration of the synchronization channel may be L milliseconds (ms), and the transmission period of the synchronization channel may be 10 Lms.
  • the value of L includes, but is not limited to, 5, 10 or 20, and the like.
  • the transmission duration L of the synchronization channel may be 20 ms
  • the transmission period 10L of the synchronization channel may be 200 ms.
  • the information sent by the synchronization channel may include PSS and SSS.
  • the synchronization channel is usually located at the beginning of a superframe.
  • the time domain resource of the synchronization channel may include the first and second frames of the superframe, that is, the time domain resource of the synchronization channel may be the first 20 ms of the superframe.
  • the transmission period of the synchronization channel may be an integral multiple of the duration of the superframe. For example, as shown in FIG. 9, the duration of the superframe is 100 ms, and the transmission period of the synchronization channel is 200 ms, that is, the transmission period of the synchronization channel occupies two superframes.
  • the base station can transmit a System Information Block (SIB) on the third frequency point and the first time unit.
  • SIB System Information Block
  • the third frequency point is different from the first frequency point.
  • the third frequency point may be the frequency point corresponding to the channel 2.
  • the terminal device receives information sent on the synchronization channel at the first frequency point and the first time unit.
  • the terminal device can determine the synchronization channel based on the pre-configured channel information to receive the information transmitted on the synchronization channel. Specifically, on the one hand, the terminal device may determine, according to the frequency domain resource information in the pre-configured channel information, the first frequency point where the synchronization channel is located, for example, the frequency domain resource of the synchronization channel is 869.4-869.65 MHz, that is, the first frequency point. The frequency point corresponding to channel 4.
  • the terminal device may determine, according to the time domain resource information in the pre-configured channel information, the first time unit in which the synchronization channel is located, that is, the superframe in which the synchronization channel is located, and the transmission duration of the synchronization channel and the transmission period of the synchronization channel.
  • the time domain resource information in the pre-configured channel information may include parameters such as a superframe number, a frame number, a transmission period, and the like.
  • the terminal device can determine the synchronization channel by blind detection in order to receive the information transmitted on the synchronization channel. For example, the terminal device can separately perform signal coherent detection on five available channels on the 865-870 MHz frequency band according to the locally stored primary synchronization signal sequence. If the peak value of the coherent detection of the terminal device on a certain channel is greater than the corresponding preset threshold, the channel may be determined to be a synchronization channel. Then, the terminal device can perform coherent detection on the channel according to the locally stored SSS sequence, so as to receive information sent on the synchronization channel, thereby obtaining information such as a cell ID.
  • the base station sends information of the broadcast channel on the second frequency point and the second time unit.
  • the superframe (ie, the second time unit) where the broadcast channel is located is different from the superframe (ie, the first time unit) where the synchronization channel is located.
  • the superframe where the broadcast channel is located may be the next superframe of the superframe in which the synchronization channel is located.
  • the frequency point at which the broadcast channel is located ie, the second frequency point
  • the frequency point at which the synchronization channel is located ie, the first frequency point
  • the broadcast channel is located on the channel 3, and the synchronization channel is located on the channel 4, that is, the second frequency point is the frequency point corresponding to the channel 3, and the first frequency point is the frequency point corresponding to the channel 4.
  • the base station may determine the second frequency point according to the predefined frequency point information, or determine the second frequency point according to the actual situation of the channel. For example, the base station can evaluate the usage of the channel and use the less interfered channel as the second frequency point.
  • the broadcast channel and the synchronization channel are transmitted in the time division manner at the same frequency point.
  • the transmission duration of the broadcast channel and the synchronization channel is shortened, and the coverage capability of the system is reduced.
  • Embodiments of the present application may transmit a broadcast channel and a synchronization channel at different time units and different frequency points. For example, now In the prior art, the broadcast channel and the synchronization channel are transmitted in a time division manner at the same frequency point, and the broadcast channel and the synchronization channel respectively occupy 5% of the transmission duration at the frequency point.
  • the broadcast channel and the synchronization channel are transmitted at different frequency points and different time units, and the broadcast channel and the synchronization channel respectively occupy 10% of the transmission duration at respective frequency points. Therefore, the embodiment of the present application can enable the network device to repeatedly send the synchronization channel and the broadcast channel multiple times under the condition that the duty ratio is satisfied, thereby improving the coverage capability of the system.
  • the transmission duration of the broadcast channel may be Lms, and the transmission period of the broadcast channel may be 10 Lms.
  • the broadcast channel is usually located at the beginning of a superframe.
  • the time domain resource of the broadcast channel may be the first 5 ms, the first 10 ms or the first 20 ms of the superframe.
  • the transmission period of the broadcast channel is an integer multiple of the duration of the superframe. For example, as shown in FIG. 9, the transmission period of the broadcast channel is 200 ms, which is twice the duration of the superframe.
  • the base station may carry the related information of the second frequency point in the synchronization channel, and then send the information to the terminal device.
  • the related information of the second frequency point is used to determine the second frequency point.
  • the base station can transmit system messages on the third frequency point and the second time unit.
  • the third frequency point and the second frequency point are different frequency points.
  • the third frequency point may be the frequency point corresponding to channel 2.
  • the terminal device receives the information sent on the broadcast channel on the second frequency point and the second time unit.
  • the information transmitted on the broadcast channel may include broadcast information and some data information.
  • the broadcast information may include cell information.
  • the terminal device may determine the second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is predefined frequency point information, or the frequency point information of the broadcast channel is carried in the synchronization channel.
  • Frequency information The information about the frequency information carried in the synchronization channel, that is, the information about the second frequency point carried by the base station in the synchronization channel, may include the correspondence between the identifier of the available channel and the synchronization signal sequence. For example, if the five sets of synchronization signal sequences respectively correspond to the identifiers of the five available channels, the terminal device may determine the identifier of the available channel corresponding to the broadcast channel according to the synchronization signal sequence, thereby determining the second frequency point.
  • the terminal device receives the information transmitted on the broadcast channel and the synchronization channel in a time division manner at the same frequency point, and shortens the information transmitted on the receiving broadcast channel and the synchronization channel under the limitation of the duty ratio.
  • the length of time reduces the coverage of the system.
  • the terminal device may receive information sent on the broadcast channel and the synchronization channel at different time units and different frequency points.
  • the terminal device receives the information transmitted on the broadcast channel and the synchronization channel in a time division manner on the same frequency point, and the broadcast channel and the synchronization channel respectively occupy 5% of the transmission duration at the frequency point.
  • the terminal device selects a preamble index and a physical random access channel (PRACH) resource for transmitting a preamble, and sends a preamble on the resource.
  • the slot is the upstream slot of the superframe where the broadcast channel is located.
  • PRACH physical random access channel
  • the base station sends a random access response (RAR) to the terminal device.
  • RAR random access response
  • the base station sends a fourth message (message4) to the UE, so that the terminal accesses the base station.
  • the different UEs may select the same PRACH resource to send the preamble.
  • the terminal device sends uplink data on an uplink data channel.
  • the superframe in which the uplink data channel is located may be the same as the superframe in which the synchronization channel or the broadcast channel is located, but the time domain resources of the uplink data channel are different from the time domain resources of the synchronization channel and/or the broadcast channel.
  • the frequency domain resource of the uplink data channel and the frequency domain resource of the synchronization channel and/or the broadcast channel may be the same or different, and the present application is not limited thereto.
  • the time domain resources of the uplink data channel are used.
  • the 6th to 10th frames of each superframe may be included.
  • the base station sends downlink data on a downlink data channel.
  • the related parameters of the downlink data channel may be configured by the base station, that is, the base station may configure the superframe number, the frame number, the transmission duration, the transmission period, and the frequency domain resources of the downlink data channel according to the application scenario or the service model.
  • the superframe of the downlink data channel is the same as the superframe of the synchronization channel or the broadcast channel, and the time domain resources of the downlink data channel are different from the time domain resources of the synchronization channel and/or the broadcast channel, and the frequency domain resources of the downlink data channel are different. Different from the frequency domain resources of the synchronization channel and/or the broadcast channel.
  • the synchronization channel is located on channel 4 and the broadcast channel is located on channel 3.
  • Synchronization channel The time domain resources include the first and second frames of the superframe, and the time domain resources of the broadcast channel include the first and second frames of the next superframe of the superframe in which the synchronization channel is located.
  • the downlink data channel may be located on channel 0, channel 1 or channel 2.
  • the time domain resource of the downlink data channel may be each superframe.
  • the period of the downlink data channel and the period of the SIB channel need to be adjusted accordingly to meet the requirements of the base station side duty ratio.
  • the time domain resource of the SIB channel is the third frame of the superframe, and the downlink data channel may be located next to the superframe where the SIB is located.
  • the third frame of the superframe is the third frame of the superframe.
  • the period of the SIB channel and the period of the downlink data channel are both two superframes, that is, 200 ms.
  • the solution provided by the embodiment of the present invention is mainly introduced from the perspective of a base station and a terminal device.
  • the base station and the terminal device include corresponding hardware structures and/or software modules for performing respective functions.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the algorithm steps described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiments of the present invention may divide the functional modules of the base station and the terminal device according to the foregoing method.
  • each functional module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 10 is a schematic diagram showing a possible structure of the base station 10 involved in the foregoing embodiment, where the base station includes:
  • the sending unit 1001 is configured to send information of the synchronization channel on the first frequency point and the first time unit, and the sending unit is further configured to send information of the broadcast channel on the second frequency point and the second time unit; wherein, the second time The unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the determining unit 1002 is configured to determine a second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is predefined frequency point information.
  • the sending unit 1001 is configured to support the base station to perform the processes 801, 803, and 807 in FIG.
  • the determining unit 1002 can be used to support the base station to perform the process 803 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 11 shows a possible structural diagram of the base station involved in the above embodiment.
  • the base station may include a processing module 1101, a communication module 1102, and a storage module 1103.
  • the processing module 1101 is configured to control various parts of the base station, hardware devices, application software, and the like;
  • the communication module 1102 is configured to receive commands sent by other devices by using a wireless fidelity (WiFi) communication method, or Data is sent to other devices;
  • storage module 1103 is used to perform base station Storage of software programs, storage of data, and operation of software.
  • WiFi wireless fidelity
  • the processing module 1101 may be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 1102 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1103 can be a memory.
  • FIG. 12 is a schematic diagram showing a possible structure of the terminal device 12 involved in the foregoing embodiment.
  • the terminal device includes: a receiving unit 1201, a determining unit 1202, and a sending unit. 1203.
  • the receiving unit 1201 may be configured to receive information sent on the synchronization channel on the first frequency point and the first time unit; and receive the transmission on the broadcast channel on the second frequency point and the second time unit.
  • Information wherein the second time unit is the next time unit of the first time unit, the time unit includes M frames, and M is an integer greater than or equal to 2.
  • the determining unit 1202 is configured to determine a second frequency point according to the frequency point information of the broadcast channel, where the frequency point information of the broadcast channel is predefined frequency point information, or the frequency point information of the broadcast channel is a frequency point carried in the synchronization channel. information.
  • the sending unit 1203 can be configured to send uplink data on the uplink data channel.
  • the receiving unit 1201 is configured to support the terminal device to perform the processes 801 and 804 in FIG.
  • the determining unit 1202 can be used to support the terminal device to perform the process 804 of FIG.
  • the sending unit 1203 is configured to support the terminal device to perform the process 806 in FIG. 8. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 13 shows a possible structural diagram of the terminal device involved in the above embodiment.
  • the terminal device may include a processing module 1301, a communication module 1302, and a storage module 1303.
  • the processing module 1301 is configured to control various parts of the terminal device, the hardware device, the application software, and the like.
  • the communication module 1302 is configured to receive an instruction sent by another device by using a communication method such as WiFi, or send the data of the terminal device to another device.
  • the storage module 1303 is configured to execute storage of a software program of the terminal device, storage of data, operation of software, and the like.
  • the processing module 1301 may be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 1302 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1303 may be a memory.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable hard disk, read-only optical disk, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device.
  • the processor and the storage medium may also exist as discrete components in the core network interface device.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.
  • embodiments of the invention may be provided as a method, system, or computer program product.
  • embodiments of the invention may be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • embodiments of the invention may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • Embodiments of the invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.

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

Abstract

Selon certains modes de réalisation, la présente invention se rapporte au domaine des communications, et concerne un procédé et un dispositif de transmission et de réception d'informations de canal, qui peuvent résoudre le problème selon lequel des capacités de couverture de système sont affectées en raison du raccourcissement de la durée de transmission de chaque canal lorsqu'un signal de référence de découverte (DRS) est transmis ou reçu selon une répartition dans le temps à un même point de fréquence. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des informations transmises sur un canal de synchronisation à un premier point de fréquence et à une première unité de temps, et le dispositif terminal reçoit des informations transmises sur un canal de diffusion à un second point de fréquence et à une seconde unité de temps. Le premier point de fréquence et le second point de fréquence sont respectivement des points de fréquence différents. La seconde unité de temps est l'unité de temps suivante après la première unité de temps, une unité de temps comprenant M trames, M étant un nombre entier supérieur ou égal à 2. Les modes de réalisation de la présente invention sont appliqués dans un processus de transmission et de réception d'un DRS sur un spectre sans licence.
PCT/CN2017/108123 2017-10-27 2017-10-27 Procédé et dispositif de transmission et de réception d'informations de canal Ceased WO2019080122A1 (fr)

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CN106788931A (zh) * 2016-09-30 2017-05-31 展讯通信（上海）有限公司 通信系统中信息传输的方法及基站、用户设备
CN106936756A (zh) * 2015-12-31 2017-07-07 中兴通讯股份有限公司 同步信号的传输方法、装置及系统

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US20140206341A1 (en) * 2013-01-21 2014-07-24 Telefonaktiebolaget L M Ericsson (Publ) Systems and methods for using enhanced receiver and gaps when handling interference
CN106936756A (zh) * 2015-12-31 2017-07-07 中兴通讯股份有限公司 同步信号的传输方法、装置及系统
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