WO2017076352A1 - Procédé, dispositif et système de transmission de message de diffusion de système reposant sur la formation de faisceaux - Google Patents

Procédé, dispositif et système de transmission de message de diffusion de système reposant sur la formation de faisceaux Download PDF

Info

Publication number
WO2017076352A1
WO2017076352A1 PCT/CN2016/104695 CN2016104695W WO2017076352A1 WO 2017076352 A1 WO2017076352 A1 WO 2017076352A1 CN 2016104695 W CN2016104695 W CN 2016104695W WO 2017076352 A1 WO2017076352 A1 WO 2017076352A1
Authority
WO
WIPO (PCT)
Prior art keywords
broadcast message
type
system broadcast
information
terminal
Prior art date
Application number
PCT/CN2016/104695
Other languages
English (en)
Chinese (zh)
Inventor
刘星
刘文豪
毕峰
王乔锋
郁光辉
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017076352A1 publication Critical patent/WO2017076352A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present invention relates to a high frequency communication system, and more particularly to a beam based system broadcast message transmission method, apparatus and system for high frequency communication.
  • the transmitting end can concentrate the transmitting energy in a certain direction, and the energy is small or absent in other directions, that is, each beam has its own directivity, and each beam can only cover To a terminal in a certain direction, the transmitting end, that is, the base station needs to transmit multiple beams to complete the full coverage.
  • the number of beams is in the tens or even hundreds.
  • the transmission capability of high-frequency stations will be limited, and it is difficult to achieve simultaneous transmission of omnidirectional multiple beams.
  • simultaneous transmission of omnidirectional multiple beams is also difficult to avoid interference between adjacent beams.
  • each beam tends to use time-division transmission, or packet time-division transmission (that is, the beam is divided into several groups, each group of beams are simultaneously transmitted); for each beam direction, the beam can only occupy the system bandwidth for the above-mentioned time-division transmission mode.
  • the "relative overhead" of the system broadcast message is actually increased; on the other hand, the design method based on the LTE system broadcast message period is sent to meet the directions.
  • the access requirements of the terminal may occur, and the omnidirectional coverage of the system broadcast message must be implemented.
  • the communication station needs to repeatedly send the same system broadcast message in each beam direction. For the communication station, there is also an "absolute overhead of the system broadcast message. "The problem is getting bigger.”
  • Embodiments of the present invention provide a beam-based system broadcast message transmission method, apparatus, and system, to at least solve the technical problem of how to reduce the "absolute overhead" of a system broadcast message.
  • a beam-based system broadcast message transmission method including:
  • the base station sends the first type of system broadcast message in all the beam directions, where the first type of system broadcast message includes information required to indicate to the terminal in each beam direction and to access the subordinate cell of the base station;
  • the base station sends a second type system broadcast message in a beam direction corresponding to the terminal according to the second type system broadcast message request indication information.
  • the base station separately sends the first type of system broadcast message in all the beam directions according to the predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation manner includes at least one of the following manners. :
  • the base station separately sends the first type of system broadcast message in all beam directions, including:
  • the base station separately sends the first type of system broadcast message in a time-frequency resource corresponding to each beam direction, where the time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following:
  • PLMN Public land mobile communication network
  • the cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, a configuration required to access a cell of the base station parameter.
  • the method before the receiving, by the base station, the second type of system broadcast message request indication information sent by the terminal, the method further includes:
  • the base station sends inquiry information to the terminal, wherein the inquiry information is used to query the terminal whether the terminal needs to receive the second type system broadcast message.
  • the query information is sent by means of a radio resource control RRC message, and/or a paging message.
  • the second type of system broadcast message request indication information includes: displaying, or implicitly indicating, the terminal in the direction of the beam to the base station, and the terminal existing in the beam direction needs to receive the second type of system. Broadcast message.
  • the second type of system broadcasts message request indication information, including at least one of the following forms:
  • the base station receives a dedicated indication sequence sent by the terminal, or a dedicated indication signal.
  • the base station sends, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal, including:
  • the base station acquires a beam direction in which the terminal is located from the second type of system broadcast message request indication information, and sends a second type system broadcast message in a beam direction in which the terminal is located.
  • the base station acquires a beam direction where the terminal is located by using at least one of the following manners:
  • the base station acquires index information of a beam direction of the terminal by reading the content of the second type of system broadcast message request indication information;
  • the base station determines, by using the time-frequency resource occupied by the second type of system broadcast message request indication information, the beam direction of the terminal;
  • the base station determines, by using the sequence of the second type of system broadcast message request indication information, the beam direction in which the terminal is located.
  • the second type of system broadcast message is used to indicate, to a terminal that has selected and accessed the subordinate cell of the base station, cell level system information required for normal operation in the network.
  • the cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;
  • the beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information comprises one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the used time-frequency resource is in the time-frequency resource corresponding to the beam direction corresponding to the terminal, and is as follows: At least one of the ways to determine:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following manners:
  • another beam-based system broadcast message transmission method including:
  • the terminal receives a second type of system broadcast message sent by the base station.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:
  • the cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
  • the resource location occupied by the first type of system broadcast message includes at least one of the following forms:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the method before the sending, by the terminal, the second type of system broadcast message request indication information, the method further includes:
  • the terminal receives the base station to send the inquiry information, where the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
  • the query information is sent by means of an RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type of system broadcast. Message.
  • the manner in which the second type of system broadcast message request indication information is sent includes at least one of the following manners:
  • the terminal indicates by using a preamble sequence sent by the random access procedure to the base station;
  • the terminal indicates to the base station by using a dedicated RRC message
  • the terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
  • the terminal feeds back the wave to the base station by using at least one of the following manners Beam direction, including:
  • the terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;
  • the terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-class system broadcast message request indication information to indicate the beam direction where the terminal is located;
  • the terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
  • the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information is used.
  • the method includes one or more of the following information: configuration information of the downlink control channel, neighboring area information, early warning information, and beam tracking information;
  • the beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information comprises one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the terminal learns, by at least one of the following manners, a time-frequency resource location occupied by the second type of system broadcast message:
  • the uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
  • a beam-based system broadcast message transmission apparatus including:
  • the first sending module is configured to separately send the first type of system broadcast message in all beam directions; wherein the first type of system broadcast message includes, to the terminal in each beam direction, the selection and access to the subordinate cell of the base station. information;
  • a first receiving module configured to receive, by the receiving terminal, a second type of system broadcast message request indication information that is sent according to the received first type system broadcast message
  • the second sending module is configured to send, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal.
  • the first sending module is specifically configured to separately send a first type of system broadcast message in all beam directions according to a predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation is performed.
  • the method includes at least one of the following ways:
  • the time-frequency resource used by the first type of system broadcast message is at least A certain:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the information required for selecting and accessing a subordinate cell of the base station includes one or more of the following:
  • PLMN Public land mobile communication network
  • the cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, configuration parameters required for accessing a cell of the base station.
  • the device further includes:
  • the second sending module is configured to send the query information to the terminal before the second type of system broadcast message request indication information sent by the receiving terminal, where the query information is used to query the terminal whether the terminal needs to receive the second type of system broadcast Message.
  • the query information is sent by means of a radio resource control RRC message, and/or a paging message.
  • the second type of system broadcast message request indication information includes: indicating to the base station that the terminal exists in the direction of the beam, or the terminal that exists in the beam direction needs to receive the second type of system broadcast message. .
  • the second type of system broadcasts message request indication information, including at least one of the following forms:
  • the second sending module includes:
  • An acquiring unit configured to acquire, from the second type of system broadcast message request indication information, a beam direction in which the terminal is located;
  • a sending unit configured to send a second type of system broadcast message in a beam direction in which the terminal is located.
  • the acquiring unit acquires a beam direction where the terminal is located by using at least one of the following manners:
  • Determining the sequence by using the sequence of the second type of system broadcast message request indication information Indicates the beam direction in which the terminal is located.
  • the second type of system broadcast message is used to indicate, to a terminal that has selected and accesses a subordinate cell of the base station, cell level system information required for normal operation in the network.
  • the cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;
  • the beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information comprises one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource used is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following manners:
  • another beam-based system broadcast message transmission apparatus including:
  • a second receiving module configured to receive a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;
  • the third sending module is configured to send the second type of system broadcast message request indication information according to the information required for selecting and accessing the subordinate cell of the base station;
  • the third receiving module is configured to receive the second type of system broadcast message sent by the base station.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:
  • the cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
  • the resource location occupied by the first type of system broadcast message includes at least one of the following forms:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the device further includes:
  • the fourth receiving module is configured to: before receiving the second type system broadcast message request indication information, the receiving base station sends the query information, wherein the query information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
  • the query information is sent by means of an RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type of system broadcast. Message.
  • the manner in which the second type of system broadcast message request indication information is sent includes at least one of the following manners:
  • the terminal indicates by using a preamble sequence sent by the random access procedure to the base station;
  • the terminal indicates to the base station by using a dedicated RRC message
  • the terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
  • the third sending module feeds back the beam direction of the base station by using at least one of the following manners, including:
  • the terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;
  • the terminal uses the time-frequency domain location corresponding to the beam direction, and uses the second transmission
  • the class system broadcast message request indicates the time-frequency domain location of the information to indicate the beam direction in which the terminal is located;
  • the terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
  • the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information is used.
  • the method includes one or more of the following information: configuration information of the downlink control channel, neighboring area information, early warning information, and beam tracking information;
  • the beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information comprises one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the terminal learns, by at least one of the following manners, a time-frequency resource location occupied by the second type of system broadcast message:
  • the uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
  • a beam-based system broadcast message transmission system including the apparatus described above.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the above method.
  • the embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes configuration information necessary for terminal cell selection and random access, and is transmitted in all beam directions; the second type of system broadcast message includes Other cell common control information, the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • FIG. 1(a) is a flowchart of a beam-based system broadcast message transmission method according to an embodiment of the present invention
  • 1(b) is a flowchart of another beam-based system broadcast message transmission method according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of application scenarios corresponding to the first, second, and third embodiments of the present invention.
  • FIG. 3 is a schematic flowchart of a corresponding embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another process corresponding to the first embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a corresponding embodiment of the present invention.
  • FIG. 7 is a schematic diagram of timing relationship of each beam transmission according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic diagram of relationship between transmission timings of respective beams according to Embodiment 3 of the present invention.
  • FIG. 10 is a schematic flowchart of a second embodiment of the fourth embodiment of the present invention.
  • FIG. 11 is a schematic flowchart of a fourth embodiment of the present invention.
  • FIG. 13 is a schematic flowchart of a corresponding embodiment of the present invention.
  • FIG. 14(a) is a structural diagram of a beam-based system broadcast message transmission apparatus according to an embodiment of the present invention.
  • FIG. 14(b) is a structural diagram of another beam-based system broadcast message transmission apparatus according to an embodiment of the present invention.
  • FIG. 1(a) is a flowchart of a beam-based system broadcast message transmission method according to an embodiment of the present invention. The method shown in Figure 1(a) includes:
  • Step 101 The base station separately sends a first type of system broadcast message in all beam directions, where the first type of system broadcast message includes information required to indicate selection and access to the subordinate cell of the base station to the terminal in each beam direction. ;
  • Step 102 The base station receiving the second type of system broadcast message request indication information transmitted by the terminal according to the received first type system broadcast message;
  • Step 103 The base station sends a second type system broadcast message in a beam direction corresponding to the terminal according to the second type system broadcast message request indication information.
  • the first type of system broadcast message is sent according to a time-frequency domain resource allocation manner occupied by each beam direction, wherein the time-frequency domain resource allocation manner includes at least one of the following manners:
  • the time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners: when the first type of system broadcast message is sent according to the time-frequency domain resource allocation mode occupied by each beam direction transmission:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following:
  • PLMN Public land mobile communication network
  • the cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, a configuration required to access a cell of the base station parameter.
  • the method further includes:
  • the base station sends inquiry information to the terminal, wherein the inquiry information is used to query the terminal whether the terminal needs to receive the second type system broadcast message.
  • the query information is sent by means of a radio resource control RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes: displaying or implicitly indicating to the base station that the terminal exists in the direction of the beam, and the terminal existing in the beam direction needs to receive the second type system broadcast message. .
  • the second type of system broadcast message request indication information includes at least one of the following forms:
  • the base station receives a dedicated indication sequence sent by the terminal, or a dedicated indication signal.
  • the base station sends the second type of system broadcast message in the beam direction corresponding to the terminal according to the second type of system broadcast message request indication information, including:
  • the base station acquires a beam direction in which the terminal is located from the second type of system broadcast message request indication information, and sends a second type system broadcast message in a beam direction in which the terminal is located.
  • the base station acquires a beam direction where the terminal is located by using at least one of the following manners:
  • the base station acquires index information of a beam direction of the terminal by reading the content of the second type of system broadcast message request indication information;
  • the base station determines, by using the time-frequency resource occupied by the second type of system broadcast message request indication information, the beam direction of the terminal;
  • the base station determines, by using the sequence of the second type of system broadcast message request indication information, the beam direction in which the terminal is located.
  • the second type of system broadcast message is used to indicate, to a terminal that has selected and accessed the subordinate cell of the base station, cell level system information required for normal operation in the network.
  • the cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;
  • the beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information includes one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource used is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following methods:
  • the method provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • FIG. 1(b) is a flowchart of another beam-based system broadcast message transmission method according to an embodiment of the present invention.
  • the method shown in Figure 1(b) includes:
  • Step 201 The terminal receives a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;
  • Step 202 The terminal sends a second type of system broadcast message request indication information according to the information required to select and access the subordinate cell of the base station;
  • Step 203 The terminal receives a second type of system broadcast message sent by the base station.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:
  • the cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
  • the resource location occupied by the first type of system broadcast message includes at least one of the following forms:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the other part
  • the time-frequency resources occupied by the sub-information are dynamically scheduled.
  • the method further includes: before the terminal sends the second type of system broadcast message request indication information, the method further includes:
  • the terminal receives the base station to send the inquiry information, where the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
  • the inquiry information is sent by means of an RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type system broadcast message.
  • the method for sending the second type of system broadcast message request indication information includes at least one of the following methods:
  • the terminal indicates by using a preamble sequence sent by the random access procedure to the base station;
  • the terminal indicates to the base station by using a dedicated RRC message
  • the terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
  • the terminal feedbacks the direction of the beam to the base station by using at least one of the following manners, including:
  • the terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;
  • the terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-class system broadcast message request indication information to indicate the beam direction where the terminal is located;
  • the terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
  • the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information includes the following One or more of the information: configuration information of the downlink control channel, Neighbor information, early warning information and beam tracking information;
  • the beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information includes one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the terminal obtains the time-frequency resource location occupied by the broadcast message of the second type system by at least one of the following manners:
  • the uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
  • the embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes configuration information necessary for terminal cell selection and random access, and is transmitted in all beam directions; the second type of system broadcast message includes Other cell common control information, the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is implemented. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • the base station separately transmits the first type of system broadcast message in all beam directions according to a predefined manner, and refers to a time-frequency domain resource allocation manner occupied by each beam direction transmission, including at least one of the following methods:
  • the beam direction transmissions of different beam direction groups occupy different time domain resources, and the beams in the same beam direction group can occupy the same time domain resource transmission; M beams, the base station needs to transmit in all M beam directions to cover the entire cell range.
  • the M beams are divided into N groups, and each beam direction in each beam direction group can be
  • the same time domain resource is multiplexed, that is, the first type of system broadcast message is transmitted at the same time, and the occupied frequency domain resources are not limited, and may be the same or different; the beam directions belonging to different beam direction groups occupy different transmission times.
  • each beam group contains only one beam direction, which is a special case of the grouping scheme, in which all beams are time-divisionally transmitted; another special case, ie All beam directions are transmitted simultaneously.
  • all M beams are grouped into one group. All beam directions can be transmitted simultaneously.
  • the occupied frequency resources are still not limited, but when the beam transmission occupies the same frequency (ie, the same frequency) At this time, different beam transmissions can be distinguished by different sequences or by scrambling information through different scrambling codes.
  • Different beam direction groups are frequency-divisionally transmitted, that is, beam direction transmissions belonging to different beam direction groups occupy different frequency domain resources, and each beam in the same beam direction group can occupy the same frequency domain resource transmission. Similar to the time-division transmission, in the different beam direction group frequency division transmission mode, it is still assumed that the M beams are divided into N groups, and each beam direction in each beam direction group can be multiplexed with the same frequency domain resource, that is, the same use
  • the frequency resource transmits the first type of system broadcast message, and the occupied time domain resources are not limited, and may be the same or different; the beam directions belonging to different beam direction groups Occupy different frequency resource emissions.
  • each beam group contains only one beam direction, which is a special case of the grouping scheme, in which all beam frequency divisions are transmitted; another special case, That is, all beam directions are transmitted in the same frequency.
  • all M beams are grouped into one group. All beam directions can occupy the same frequency resource.
  • the occupied time domain resources are still not restricted. In this case, different sequences can be used. Or distinguishing different beam emissions by means of scrambling information through different scrambling codes.
  • the allocation method of the time-frequency resources occupied by each beam transmission may also be a combination of two modes, that is, distinguishing the transmissions in different beam directions by two dimensions in the time-frequency domain.
  • the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and there are two new terminals UE1 that are covered by the cell1 in the cell1.
  • the UE2 is located in the direction of the transmit beam B1 and the transmit beam B3 of the BS, respectively.
  • the specific process of newly entering the terminal access network to receive the system broadcast message is as follows:
  • Step 1 The BS sends the first type of system broadcast message in a certain period T1 in all beam directions;
  • the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time, each beam occupies 1 subframe, that is, the BS is in the beam during the subframe 0.
  • a first type of system broadcast message is sent on B0, a first type of system broadcast message is sent on beam B1 during subframe 1, and so on;
  • the BS also sends a synchronization signal in each beam direction for the UE to perform downlink synchronization, so that the first type of system broadcast message sent by the BS in the corresponding beam direction can be further received.
  • the synchronization signal carries information for identifying the beam at the same time. For example, each beam transmits a synchronization signal of a different sequence.
  • the UE determines the downlink transmission of the received beam according to the detected sequence while implementing downlink synchronization with the BS.
  • There are many similar methods for beam identification using different synchronization signals for example, different beams are distinguished according to the time-frequency domain position of the synchronization signal. There is no key description here.
  • the first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, an MIB in an existing LTE system, and a cell selection related cell in SIB1, and a random access configuration in SIB2).
  • the UE for receiving the message determines whether the cell is selected as the target serving cell, and may further perform random access to the cell 1 according to the random access configuration parameter.
  • the information in the existing system broadcast message of the LTE system is taken as an example to describe the specific content of the first type of system broadcast message.
  • the first type of system broadcast message includes the terminal cell selection and the access network related configuration.
  • Information can be. Can include:
  • MIB downlink bandwidth dl-Bandwidth
  • PHICH configuration information phich-Config
  • system frame number systemFrameNumber system frame number
  • CellSelectionInfo cell minimum access level q-RxLevMin, minimum access RSRP value offset q-RxLevMinOffset, UE transmit power maximum p-Max, frequency bandwidth indication freqBandIndicator.
  • PRACH and RACH configuration information PRACH and RACH configuration information
  • PRACH-Config information elements high-speed moving ZC sequence cyclic shift selection information highSpeedFlag, PRACH time domain resource configuration information prach-ConfigIndex, PRACH frequency domain resource configuration information prach-FreqOffset, root sequence logical index rootSequenceIndex, sequence offset zeroCorrelationZoneConfig;
  • the contention resolution timer mac-ContentionResolutionTimer the maximum number of retransmissions of the MSG3 maxHARQ-Msg3Tx.
  • the power required by the UE needs to be several DBs, messagePowerOffsetGroupB, when the group A is selected, the MSG3 Maximum message size messageSizeGroupA, Preamble total NumberOfRA-Preambles, when the UE retransmits the preamble, the power step is increased by the powerRampingStep, the base station expects the target power preambleInitialReceivedTargetPower, the preamble group A configuration information preamblesGroupAConfig, the Preamble maximum number of transmissions preambleTransMax, and the random access response window length ra-ResponseWindowSize, The number of preambles included in group A is sizeOfRA-PreamblesGroupA;
  • the time-frequency position index ra-PRACH-MaskIndex in the non-contention access mode, the code sequence index ra-PreambleIndex sent by the UE;
  • the first type of system broadcast message occupies a fixed time-frequency domain resource, and the UE that completes the downlink synchronization can find the first type of system broadcast message loaded on the fixed location.
  • Step 2 The BS transmits a synchronization signal and a first type of system broadcast message in the direction of the beam B1 at the time of the subframe 1;
  • the UE1 performs correlation processing on the downlink synchronization signal by using a series of sequences and the received synchronization signal to obtain a sequence used by the received synchronization signal, thereby determining that the received downlink transmission is from the beam B1, and at the same time.
  • the downlink synchronization process with the BS is also completed.
  • the UE1 finds the first type of system broadcast message in the fixed time-frequency domain location, and the UE1 first determines whether the cell1 is a selectable cell according to the cell selection information of the BS, and the determination result is selectable.
  • the random access configuration information is further obtained for subsequent random access procedure.
  • Step 3 The BS receives the second type of system broadcast message request indication information sent by the UE (in this embodiment, the UE indicates to the BS by sending the preamble);
  • the UE1 is taken as an example.
  • the UE1 selects a preamble sequence in a certain preamble sequence resource according to the random access configuration information, and sends the preamble sequence to the BS on the uplink transmission resource specified by the BS.
  • the selection process of the preamble sequence requires the UE to pass the preamble sequence.
  • the column indicates the direction of the downlink beam B1 in which it is located.
  • the system pre-defines the preamble sequence corresponding to the beam B1.
  • the UE transmits the specific preamble sequence to indicate to the BS the direction of the beam.
  • Step 4 After receiving the preamble sequence from the UE, the BS completes the random access procedure with the UE according to the existing LTE random access manner.
  • Step 5 In addition to continuing the random access procedure with the UE, it is also known in which beam directions the UE exists, and in these directions, a second type of system broadcast message needs to be further provided.
  • the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3. Therefore, the BS further sends the second type to the transmission resources of the subsequent B1 and B3 with a certain period T2.
  • the system broadcasts a message.
  • the second type of system broadcast message includes other cell common control information (such as one or more of SIB3-SIB17 of the existing LTE system) other than the cell selection information and the access configuration information;
  • the terminal that is in the subordinate cell of the base station further indicates necessary parameters required for normal operation in the network, including but not limited to one or more of the following information: configuration information of the downlink control channel, neighboring area information, and early warning Information, etc.
  • the second type of system broadcast message occupies a predefined fixed time-frequency resource; therefore, the UE can find the second type of system broadcast message on the fixed time-frequency resource.
  • the time-frequency resource occupied by the second-class system broadcast message may be dynamically scheduled, and the subframe in which the second-class system broadcasts the message is located.
  • the control channel indicates a specific time-frequency resource location of the second type of system broadcast message
  • part of the information in the second type of system broadcast message (such as SIB3-SIB8) occupies a fixed time-frequency resource, and another part of the information (such as SIB9-SIB17) occupies a time-frequency resource that is dynamically adjusted. Degree.
  • the operations described in steps 4 and 5 can be interchanged (as shown in Figure 5).
  • the BS can choose to execute the system broadcast message on demand and send it first.
  • the class system broadcast message is sent to the terminal in the beam direction indicated by the UE, and then the random access procedure triggered by the preamble is processed to complete the random access of the UE to the BS.
  • the present embodiment corresponds to the application scenario shown in FIG. 2, in which the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 that are covered by the cell1 in the cell1 are located respectively.
  • the new incoming terminal does not have an uplink transmission requirement, that is, the uplink random access procedure is not performed, and the process in which the UE indicates the direction of the beam to the BS through the dedicated signal and receives the broadcast message of the second type system is described as follows: :
  • Step 1 The BS sends the first type of system broadcast message in a certain period T1 in all beam directions;
  • the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time division, and each beam occupies 1 subframe, that is, the BS is in the beam during the subframe 0.
  • a first type of system broadcast message is sent on B0, a first type of system broadcast message is sent on beam B1 during subframe 1, and so on;
  • the BS also sends a synchronization signal in each beam direction for the UE to perform downlink synchronization, so that the first type of system broadcast message sent by the BS in the corresponding beam direction can be further received.
  • the first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, MIB, SIB1, and SIB2 in the existing LTE system), and the UE that receives the message determines whether the cell is selected as the target. Serving the cell, and may further perform random access to cell1 according to the random access configuration parameter.
  • the first type of system broadcast message Includes dedicated indication signaling, or uplink transmit resources for dedicated indication signals.
  • the first type of system broadcast message also carries information for identifying the beam, for example, by using a beam to transmit the first type of system broadcast message, and scrambling through different sequences, and the UE determines the scrambled when decoding the first type of system broadcast message.
  • part of the information in the first type of system broadcast message occupies a fixed time-frequency domain resource, and the UE that completes the downlink synchronization for such information can be found in the fixed time-frequency domain location; the time-frequency occupied by another part of the information
  • the resource is dynamically scheduled, that is, the time-frequency resource occupied by the transmission is not fixed.
  • the UE can further acquire the time-frequency domain resource location that carries the part of the information by reading the corresponding second-class system broadcast message request indication information.
  • the MIB in the first type of system broadcast message occupies a fixed time-frequency domain resource, and the time-frequency domain resources of the SIB1 and the SIB2 are dynamically scheduled, and are indicated to the terminal by corresponding information.
  • Step 2 UE1 receives the synchronization signal sent by the BS in the B1 direction and the first type of system broadcast message in the direction of the beam B1 at the time of the subframe 1;
  • the UE1 detects the synchronization signal, implements downlink synchronization with the BS, and further finds the MIB information of the fixed time-frequency domain location, descrambles the MIB information through different scrambling code sequences, and identifies the beam direction corresponding to the successfully descrambled sequence. For the beam direction B1 in which it is located.
  • UE1 finds the dynamically scheduled SIB1, SIB2, for example, the information content of the MIB, and obtains the time-frequency domain locations of SIB1 and SIB2.
  • Step 3 The UE sends a second type of system broadcast message request indication information (in the embodiment, the UE indicates to the BS by sending a dedicated indication signal);
  • UE1 is taken as an example for description.
  • UE1 does not have an uplink transmission requirement at this time. Therefore, the random access procedure is not initiated temporarily, but it still hopes to further acquire the second type of system broadcast message. Therefore, UE1 passes the dedicated indication signal. Instructing the BS to further acquire the second type of system broadcast message, and the UE1 sends a dedicated indication signal according to the uplink transmission resource of the first type of system broadcast message, the dedicated indication signaling, or the dedicated indication signal.
  • the UE not only indicates the requirement for acquiring the second type of system broadcast message through the dedicated indication signal, but also indicates the downlink beam direction B1 in which it is located by using the dedicated indication signal.
  • the system pre-defines the dedicated beam B1.
  • the UE sends the specific dedicated indication signal sequence to indicate to the BS the direction of the beam in which it is located.
  • the direction of the beam where the UE is located by using the transmission mode of the dedicated indication signal.
  • Step 4 After receiving the dedicated indication signal from the UE, the BS knows which beam directions exist in the UE, and further needs to provide the second type system broadcast message in these directions.
  • the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3. Therefore, the BS further sends the second type to the transmission resources of the subsequent B1 and B3 with a certain period T2.
  • the system broadcasts a message.
  • the second type of system broadcast message includes other cell common control information (such as one or more of SIB3-SIB17 of the existing LTE system) other than the cell selection information and the access configuration information;
  • the terminal that is in the subordinate cell of the base station further indicates necessary parameters required for normal operation in the network, including but not limited to one or more of the following information: configuration information of the downlink control channel, neighboring area information, and early warning information.
  • the embodiment corresponds to the application scenario shown in FIG. 2, the cell 1 of the high-frequency base station BS covers the target area by 7 beams (B0-B6), and the two link state terminals UE1 and UE2 are respectively located in the BS. Beam B1, in the direction of the transmit beam B3.
  • the process of requesting the link state UE to obtain the second type system broadcast message from the BS through dedicated RRC signaling is as follows:
  • Step 1 The BS sends the first type of system broadcast in a certain period T1 in all beam directions. Message
  • the BS transmits the first type of system broadcast message on all the subordinate beams B0-B6 according to the period T1, and each beam is transmitted in time division, and each beam occupies the transmission time of one radio frame, that is, the BS is in the radio frame. Transmitting a first type of system broadcast message on beam B0, transmitting a first type of system broadcast message on beam B1 during radio frame 1, and so on;
  • the specific time-frequency resources occupied by the first type of system broadcast messages are dynamically scheduled.
  • the first type of system broadcast message includes a subordinate UE for cell selection, and a parameter configuration necessary for random access (for example, MIB, SIB1, and SIB2 in the existing LTE system), for determining an idle state terminal (idle UE) that receives the message. Whether the cell is selected as the target serving cell, and the random access to the cell 1 may be further performed according to the random access configuration parameter.
  • the connected UE can also receive and read the first type of system broadcast message. Update the content of the first type of system broadcast message that was previously stored by itself.
  • UE1 and UE2 are both link state UEs.
  • Step 2 UE1 receives the first type of system broadcast message sent by the BS in the B1 direction in the direction of the beam B1 in the radio frame 1;
  • the UE1 Since the time-frequency domain resource occupied by the first type of system broadcast message is dynamically scheduled, the UE1 detects the control channel of each subframe in the radio frame 1 (such as the physical downlink control channel PDCCH in the LTE system), and determines the subsequent data. Whether the first type of system broadcast message is carried in (such as the physical downlink shared channel PDSCH in the LTE system).
  • the control channel of each subframe in the radio frame 1 such as the physical downlink control channel PDCCH in the LTE system
  • Step 3 The UE sends the second type of system broadcast message request indication information to further acquire the second type of system broadcast message (in the embodiment, the UE indicates to the BS by sending the dedicated RRC signaling);
  • UE1 is taken as an example for description.
  • UE1 generates dedicated RRC signaling, which is used to indicate to the BS that UE1 wants to acquire a second type of system broadcast message. Since UE1 is a link state terminal, BS The beam direction in which the UE1 is located is known. Therefore, the beam direction information does not need to be carried in the second type of system broadcast message request indication information.
  • Step 4 After receiving the dedicated RRC signaling from the UE, the BS knows that there is a requirement for the UE1 to receive the second type of system broadcast message, and therefore sends the second type of system broadcast message in the beam direction where the UE1 is located.
  • the time-frequency resource occupied by the second type of system broadcast message is a predefined fixed resource. Therefore, when the receiving time of the subsequent second type system broadcast message arrives, the UE1 receives the second type of system broadcast message, and Complete the update process for system broadcast messages. As shown in FIG. 9, in this embodiment, the second type of system broadcast message needs to be further provided in the direction of the beams B1 and B3.
  • This embodiment describes the indication manner of the time-frequency domain resource occupied by the broadcast message of the second type system, and the corresponding method is applicable to the various situations described in Embodiments 1, 2, and 3.
  • the first type of system broadcast message indicates that the first type of system broadcast message includes information and period information of the time-frequency domain resource for transmitting the second type system broadcast message on the same beam, if there is a terminal on the beam.
  • step 4 is added to the sub-instruction to indicate to the UE, the location and the transmission period information of the time-frequency domain resource occupied by the second-class system broadcast message.
  • the BS indicates by dedicated signaling when the UE requests acquisition from the BS through dedicated RRC signaling.
  • the BS may send a second type of system broadcast message resource indication.
  • the time-frequency domain resource location occupied by the second type of system broadcast message may also be fixedly configured in advance, that is, when the triggering BS transmits the second type system broadcast message in a certain beam direction, the BS according to the predefined time-frequency domain location.
  • the UE side also receives the message according to a predefined location.
  • the second type of system broadcast message is loaded on the middle 20 RBs of the subframe 5 of the radio frame in which the beam is located, at which time both the BS and the UE are aware of the configuration. This situation does not require additional signaling overhead to configure.
  • the transmission rule can be pre-configured, that is, which specific time-frequency domain resource is not given, but the transmission time frequency of the Nth beam after the UE feeds back the second-class system broadcast message request indication information.
  • the specific time-frequency domain resources occupied by the broadcast messages of the second type of system are calculated by using certain algorithms/rules, and the related algorithms or rules are pre-defined, and the rules are known to both the UE and the BS, and Send and receive according to this rule.
  • the specific time-frequency resources occupied by the second type of system broadcast messages are dynamically scheduled.
  • the UE Since the time-frequency domain resource occupied by the second type of system broadcast message is dynamically scheduled, the UE detects the control channel of each subframe in the beam transmission period (such as radio frame 1) (such as physical downlink control in the LTE system).
  • the channel PDCCH determines whether the second type of system broadcast message is carried in the following data (such as the physical downlink shared channel PDSCH in the LTE system).
  • the uplink random access response sent by the BS to the UE in the random access process may be adopted.
  • the message (Msg2) carries the transmission resource information of the second type of system broadcast message (step 4). That is, the BS receives the preamble, and when the random access procedure is triggered, it also knows that the UE in the direction of the beam B1 needs to further provide the second type of system broadcast message. Further, the BS replies to the uplink random access response message (Msg2) in the direction of the beam B1, and carries the time-frequency resource location information occupied by the second type of system broadcast message, in addition to the normal random access procedure. The UE may further receive the second type of system broadcast message at a specific location indicated in the subsequent Msg2.
  • the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 respectively reside in the cell1.
  • the transmit beam B1 of the BS On the transmit beam B1 of the BS, the transmit beam B3.
  • UE1 and UE2 are currently in the RRC idle state.
  • the base station sends a paging message to trigger the terminal to send the second type of system broadcast message request indication information, as shown in the flowchart of the embodiment shown in FIG.
  • Step 1 The idle state terminal resides in the subordinate cell of the BS, and is respectively located on the transmit beam B1 and the transmit beam B3 of the BS;
  • Step 2 UE1 receives the synchronization signal sent by the BS in the B1 direction and the first type of system broadcast message in the direction of the beam B1 at the time of the subframe 1;
  • the UE1 performs correlation processing on the downlink synchronization signal by using a series of sequences and the received synchronization signal to obtain a sequence used by the received synchronization signal, thereby determining that the received downlink transmission is from the beam B1, and at the same time.
  • the downlink synchronization process with the BS is also completed.
  • the UE1 finds the first type of system broadcast message in the fixed time-frequency domain location, and the UE1 first determines whether the cell1 is a selectable cell according to the cell selection information of the BS, and the determination result is selectable.
  • the random access configuration information is further obtained for subsequent random access procedure.
  • Step 3 UE1 and UE2 respectively receive a paging message sent to themselves at the specified paging message location, and it is known in the paging message that the high frequency station BS asks whether it needs to receive the second type system broadcast message;
  • the UE also sends a second type of system broadcast message request indication letter. Time-frequency domain resources.
  • Step 4 UE1 needs to update the second type of system broadcast message at this time, so the second type system broadcast message request indication signal is sent to the BS at the specified location; UE2 does not need to update the content of the second system broadcast message at this time, and therefore does not reply. Any indication information;
  • Step 5 After receiving the indication signal from the UE1, the BS sends a second type of system broadcast message in the beam direction B1 where the UE1 is located.
  • the definition of the time-frequency domain location of the second type of system broadcast message may be in any one of the embodiments.
  • the BS determines to send a second type of system broadcast message in the beam direction where the UE1 is located, or the BS may receive more than a certain amount in a certain beam direction.
  • the second type of system broadcast message is sent and received in the direction of the beam. If the number of received system broadcast message request indication information is lower than a predefined threshold, the requests are ignored and the second type of system broadcast message is not sent in the beam direction.
  • the cell 1 of the high-frequency base station BS covers the target area through 7 beams (B0-B6), and two terminals UE1 and UE2 respectively reside in the cell1.
  • the transmit beam B1 of the BS On the transmit beam B1 of the BS, the transmit beam B3.
  • UE1 and UE2 are currently in the RRC link state.
  • the RRC message is sent by the base station to trigger the terminal to send the second type of system broadcast message request indication information, as shown in the flowchart of the embodiment shown in FIG.
  • Step 1 The link state terminals UE1 and UE2 are respectively located on the transmit beam B1 and the transmit beam B3 of the BS.
  • Step 2 The UE may receive the first type of system broadcast message sent by the BS in the specified beam direction periodically during the normal communication process.
  • UE1 receives the synchronization of the BS in the B1 direction in the direction of the beam B1 at the time of the subframe 1.
  • Signal and first class system broadcast message; UE2 and The process of UE1 is the same and will not be described here.
  • Step 3 UE1 and UE2 respectively receive an RRC message sent by the BS, and ask whether it is necessary to update the second type system broadcast message.
  • Step 4 UE1 needs to update the second type of system broadcast message at this time, so the second type system broadcast message request message (RRC message) is sent to the BS at the specified location; UE2 does not need to update the content of the second system broadcast message at this time. Therefore do not reply to any instructions;
  • RRC message system broadcast message request message
  • Step 5 After receiving the second type system broadcast message request indication message from the UE1, the BS sends a second type system broadcast message in the beam direction B1 where the UE1 is located.
  • the definition of the time-frequency domain location of the second type of system broadcast message may be in any one of the embodiments.
  • the BS determines to send a second type of system broadcast message in the beam direction where the UE1 is located, or the BS may receive more than a certain amount in a certain beam direction.
  • the second type of system broadcast message is sent and received in the direction of the beam. If the number of received system broadcast message request indication messages of the second type is lower than a predefined threshold, the requests are ignored and the second type of system broadcast message is not sent in the beam direction.
  • FIG. 14(a) is a structural diagram of a beam-based system broadcast message transmission apparatus according to an embodiment of the present invention.
  • the device shown in Figure 14(a) includes:
  • the first sending module 1401 is configured to separately send the first type of system broadcast message in all beam directions, where the first type of system broadcast message includes the indication to the terminal in each beam direction to select and access the subordinate cell of the base station. Information;
  • the first receiving module 1402 is configured to receive, by the receiving terminal, a second type of system broadcast message request indication information that is transmitted according to the received first type system broadcast message;
  • the second sending module 1403 is configured to send, according to the second type of system broadcast message request indication information, a second type of system broadcast message in a beam direction corresponding to the terminal.
  • the first sending module is specifically configured to send a first type of system broadcast message in all beam directions according to a predefined time-frequency domain resource allocation manner, where the predefined time-frequency domain resource allocation manner includes At least one of the following ways:
  • the time-frequency resource used by the first type of system broadcast message is determined according to at least one of the following manners, when the first type of system broadcast message is sent according to the time-frequency domain resource allocation manner occupied by each beam direction transmission. :
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and is indicated by the control channel of the subframe in which the first type of system broadcast message is located to the terminal to indicate that the first type of system broadcast message is occupied. Time-frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the information required for selecting and accessing a subordinate cell of the base station includes one or more of the following:
  • PLMN Public land mobile communication network
  • the cell selection information is used by the terminal to determine whether the cell of the base station is suitable for selection; the access configuration information is used to indicate, to the terminal, configuration parameters required for accessing a cell of the base station.
  • the device further includes:
  • the second sending module is configured to send the query information to the terminal before the second type of system broadcast message request indication information sent by the receiving terminal, where the query information is used to query the terminal whether the terminal needs to receive the second type of system broadcast Message.
  • the query information is sent by means of a radio resource control RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes a terminal that is displayed to the base station or implicitly indicating that the beam direction exists, and the terminal that exists in the beam direction needs to receive the second type system broadcast message.
  • the second type of system broadcast message request indication information includes at least one of the following forms:
  • the second sending module includes:
  • An acquiring unit configured to acquire, from the second type of system broadcast message request indication information, a beam direction in which the terminal is located;
  • a sending unit configured to send a second type of system broadcast message in a beam direction in which the terminal is located.
  • the acquiring unit acquires a beam direction where the terminal is located by using at least one of the following manners:
  • the second type of system broadcast message is used to indicate, to a terminal that has selected and accesses a subordinate cell of the base station, cell level system information required for normal operation in the network.
  • the cell level system information includes one or more of the following information: channel configuration information, cell reselection information, early warning information, and beam tracking information;
  • the beam tracking information is used to indicate, to the beam subordinate terminal, information of one or more beams adjacent to the beam, to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information includes one or more of the following information: an index of one or more adjacent beams, a time-frequency domain position of the beam identification signal, and a sequence used by the beam identification signal.
  • the time-frequency resource used is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the time-frequency resource location of the broadcast message indicating the second type system is indicated by the control channel of the subframe in which the second type system broadcast message is located. ;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the other part
  • the time-frequency resources occupied by the sub-information are dynamically scheduled.
  • the time-frequency resource location occupied by the second type of system broadcast message is indicated to the terminal by at least one of the following methods:
  • the device embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • FIG. 14(b) is a structural diagram of another beam-based system broadcast message transmission apparatus according to an embodiment of the present invention.
  • the device shown in Figure 14 (b) includes:
  • the second receiving module 1501 is configured to receive a first type of system broadcast message sent by the base station, where the first type of system broadcast message includes information required for selecting and accessing a cell of the base station;
  • the third sending module 1502 is configured to send, according to the information required for selecting and accessing the subordinate cell of the base station, the second type of system broadcast message request indication information;
  • the third receiving module 1503 is configured to receive a second type of system broadcast message sent by the base station.
  • the information required for selecting and accessing the subordinate cell of the base station includes one or more of the following information:
  • the cell selection information is used by the terminal to determine whether the subordinate cell of the base station is allowed to be selected, and the access configuration information is used by the terminal to acquire configuration parameters required for accessing the subordinate cell of the base station.
  • the resource location occupied by the first type of system broadcast message includes at least one of the following forms:
  • the first type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the first type of system broadcast message is dynamically scheduled, and when the first type system broadcast message is indicated to the terminal by using a control channel of the subframe in which the first type system broadcast message is located Frequency resource location;
  • Part of the information in the first type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the device further includes:
  • a fourth receiving module configured to send a second type of system broadcast message request indication information
  • the receiving base station transmits inquiry information, wherein the inquiry information is used to query the terminal whether it is necessary to receive the second type system broadcast message.
  • the inquiry information is sent by means of an RRC message and/or a paging message.
  • the second type of system broadcast message request indication information includes that the terminal displays or implicitly indicates to the base station that the terminal exists in the beam direction, and the terminal needs to receive the second type system broadcast message.
  • the method for sending the second type of system broadcast message request indication information includes at least one of the following methods:
  • the terminal indicates by using a preamble sequence sent by the random access procedure to the base station;
  • the terminal indicates to the base station by using a dedicated RRC message
  • the terminal indicates to the base station through a dedicated indication sequence or a dedicated indication signal.
  • the third sending module feeds back the beam direction of the base station to the base station by using at least one of the following manners, including:
  • the terminal sends the index information of the beam direction in the second type of system broadcast message request indication information to the base station;
  • the terminal uses the time-frequency domain location corresponding to the direction of the beam, and uses the time-frequency domain location of the second-class system broadcast message request indication information to indicate the beam direction where the terminal is located;
  • the terminal indicates, by the sequence of the second type of system broadcast message request indication information, the direction of the beam in which the base station is located, where different sequences correspond to different beam directions.
  • the second type of system broadcast message is used to acquire cell level system information required for normal operation in the network to a terminal that has selected and accessed the subordinate cell of the base station, where the cell level system information includes the following One or more of the information: configuration information of the downlink control channel, neighboring area information, early warning information, and beam tracking information;
  • the beam tracking information is used to assist the terminal to perform optimal downlink beam reselection.
  • the beam tracking information includes one or more of the following information: adjacent one or The index of multiple beams, the time-frequency domain location of the beam identification signal, and the sequence used by the beam identification signal.
  • the time-frequency resource occupied by the second type of system broadcast message transmission is within the time-frequency resource of the beam transmission to which the terminal belongs, and is determined according to at least one of the following manners:
  • the second type of system broadcast message occupies a fixed time-frequency resource
  • the time-frequency resource occupied by the second type of system broadcast message is dynamically scheduled, and the terminal learns the time-frequency resource location of the second type system broadcast message in a specific manner;
  • Part of the information in the second type of system broadcast message occupies a fixed time-frequency resource, and the time-frequency resource occupied by the other part of the information is dynamically scheduled.
  • the terminal obtains the time-frequency resource location occupied by the broadcast message of the second type system by at least one of the following manners:
  • the uplink random access response message is received, where the uplink random access response message includes time-frequency domain location information of the second type of system broadcast message.
  • the device embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • an embodiment of the present invention provides a beam-based system broadcast message transmission system, including the apparatus as described in any one of FIG. 14 (a) and the apparatus as described in any one of FIG. 14 (b).
  • the system embodiment provided by the present invention divides system broadcast messages into two categories: the first type of system broadcast message includes terminal cell selection and configuration information necessary for random access, and is transmitted in all beam directions; the second type of system broadcast message The other cell common control information is included, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments 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.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • modules or steps of the present invention described above can be implemented with a general purpose computing device, which can be centralized on a single computing device, or Distributed over a network of computing devices, optionally, they may be implemented in program code executable by the computing device, such that they may be stored in the storage device for execution by the computing device, and in some cases
  • the steps shown or described may be performed in a different order than that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of the modules or steps may be implemented as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the system broadcast messages are classified into two categories: the first type of system broadcast messages include terminal cell selection and randomization. Accessing the necessary configuration information and transmitting in all beam directions; the second type of system broadcast message includes other cell common control information, and the base station transmits in part of the beam direction according to the indication information of the subordinate terminal.
  • the on-demand transmission of the second type of system broadcast messages is realized by designing the indication information in different situations. Under the premise of ensuring that the terminal can obtain the system broadcast message in a certain manner, the signaling overhead of the system broadcast message full beam period is reduced.

Landscapes

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

Abstract

Selon un mode de réalisation, l'invention concerne un procédé, un dispositif et un système de transmission de message de diffusion de système reposant sur la formation de faisceaux. Le procédé consiste à : émettre, au moyen d'une station de base, des messages de diffusion de système de premier type dans des orientations de faisceau respectives, les messages de diffusion de système de premier type comprenant des informations requises afin de donner l'instruction à des terminaux dans les orientations de faisceau respectives de sélectionner des cellules subordonnées de la station de base et d'accéder à celles-ci ; recevoir, au moyen de la station de base, des informations d'indication de demande de messages de diffusion de système de second type émises par les terminaux en fonction des messages de diffusion de système de premier type ; et émettre, au moyen de la station de base, et en fonction des informations d'indication de demande de messages de diffusion de système de second type, des messages de diffusion de système de second type dans les orientations de faisceau correspondant aux terminaux.
PCT/CN2016/104695 2015-11-06 2016-11-04 Procédé, dispositif et système de transmission de message de diffusion de système reposant sur la formation de faisceaux WO2017076352A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510752018.1 2015-11-06
CN201510752018.1A CN106686729A (zh) 2015-11-06 2015-11-06 基于波束的系统广播消息传输方法、装置和系统

Publications (1)

Publication Number Publication Date
WO2017076352A1 true WO2017076352A1 (fr) 2017-05-11

Family

ID=58661844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/104695 WO2017076352A1 (fr) 2015-11-06 2016-11-04 Procédé, dispositif et système de transmission de message de diffusion de système reposant sur la formation de faisceaux

Country Status (2)

Country Link
CN (1) CN106686729A (fr)
WO (1) WO2017076352A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110401922A (zh) * 2018-04-25 2019-11-01 华为技术有限公司 一种多播传输方法和通信设备
CN110800245A (zh) * 2019-09-29 2020-02-14 北京小米移动软件有限公司 波束失败请求发送方法、装置和电子设备

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109121206B (zh) 2017-06-22 2021-08-31 华为技术有限公司 通信方法及通信节点
EP3627950B1 (fr) 2017-07-07 2021-06-02 Huawei Technologies Co., Ltd. Procédé d'accès aléatoire, dispositif terminal et dispositif réseau
CN109302720B (zh) * 2017-07-25 2021-03-23 华为技术有限公司 一种选择波束的方法及设备
CN109327248B (zh) * 2017-07-31 2020-11-06 中国移动通信集团广东有限公司 一种广播波束赋形方法及基站
EP3668212B1 (fr) * 2017-08-07 2022-08-03 Beijing Xiaomi Mobile Software Co., Ltd. Procédés et dispositifs de transmission d'informations de radiomessagerie
CN109391405B (zh) * 2017-08-10 2021-01-22 电信科学技术研究院 波束失败的恢复方法、装置、终端及网络设备
CN109413741B (zh) * 2017-08-18 2021-05-07 维沃移动通信有限公司 一种系统信息传输方法、相关设备和系统
CN109586863B (zh) * 2017-09-28 2021-02-02 上海诺基亚贝尔股份有限公司 通信网络中用于信号发送和接收的方法、装置和计算机存储介质
WO2019061354A1 (fr) * 2017-09-29 2019-04-04 Oppo广东移动通信有限公司 Procédé et dispositif de communication radio
CN109699037B (zh) * 2017-10-24 2021-11-19 中国移动通信有限公司研究院 一种波束断连判定配置方法、判定方法及装置
US10749653B2 (en) 2017-11-28 2020-08-18 Qualcomm Incorporated Techniques and apparatuses for providing system information updates in a system using bandwidth parts
CN111418164B (zh) * 2017-12-28 2022-12-20 Oppo广东移动通信有限公司 无线通信系统中波束故障恢复的方法和装置
CN109076557B (zh) * 2018-07-25 2023-06-30 北京小米移动软件有限公司 消息传输的方法及装置
EP4333545A1 (fr) * 2021-05-28 2024-03-06 Huawei Digital Power Technologies Co., Ltd. Procédé d'accès et appareil de communication
CN115884203A (zh) * 2021-09-27 2023-03-31 中国移动通信集团山西有限公司 针对小区边缘用户的上行覆盖增强方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101237604A (zh) * 2007-01-30 2008-08-06 展讯通信（上海）有限公司 Td-scdma系统中单频网的组网方法
CN101400101A (zh) * 2007-09-24 2009-04-01 中兴通讯股份有限公司 在小区-前向接入信道状态下传输数据的方法
WO2014070048A1 (fr) * 2012-10-29 2014-05-08 Telefonaktiebolaget L M Ericsson (Publ) Procédé pour envoyer ou recevoir des informations système
CN103856894A (zh) * 2012-12-06 2014-06-11 北京三星通信技术研究有限公司 基于波束的定位方法及设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103220811B (zh) * 2012-01-19 2018-04-27 中兴通讯股份有限公司 信息处理方法、mtc ue随机接入lte系统的方法
CN103796167B (zh) * 2012-10-31 2017-12-01 中兴通讯股份有限公司 一种集群系统配置信息的广播方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101237604A (zh) * 2007-01-30 2008-08-06 展讯通信（上海）有限公司 Td-scdma系统中单频网的组网方法
CN101400101A (zh) * 2007-09-24 2009-04-01 中兴通讯股份有限公司 在小区-前向接入信道状态下传输数据的方法
WO2014070048A1 (fr) * 2012-10-29 2014-05-08 Telefonaktiebolaget L M Ericsson (Publ) Procédé pour envoyer ou recevoir des informations système
CN103856894A (zh) * 2012-12-06 2014-06-11 北京三星通信技术研究有限公司 基于波束的定位方法及设备

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110401922A (zh) * 2018-04-25 2019-11-01 华为技术有限公司 一种多播传输方法和通信设备
CN110401922B (zh) * 2018-04-25 2021-03-30 华为技术有限公司 一种多播传输方法和通信设备
CN110800245A (zh) * 2019-09-29 2020-02-14 北京小米移动软件有限公司 波束失败请求发送方法、装置和电子设备
CN110800245B (zh) * 2019-09-29 2023-01-03 北京小米移动软件有限公司 波束失败请求发送方法、装置和电子设备

Also Published As

Publication number Publication date
CN106686729A (zh) 2017-05-17

Similar Documents

Publication Publication Date Title
WO2017076352A1 (fr) Procédé, dispositif et système de transmission de message de diffusion de système reposant sur la formation de faisceaux
US20230413319A1 (en) Different configurations for message content and transmission in a random access procedure
JP7094892B2 (ja) Ｒａｃｈを送信するためのビームおよびシンボル選択
JP7098736B2 (ja) Ｎｒ－ｕにおけるｓｓｂ多重化およびｒｍｓｉ監視
US10541851B2 (en) Synchronization signal block signaling for wireless communications in shared spectrum
US11140706B2 (en) Data transmissions during base station beamsweep
US10700802B2 (en) Variable length reference signaling for fast acquisition in shared spectrum
US10298289B2 (en) Synchronization and paging channel design for wireless communications
CN106961713B (zh) 一种上行接入方法及终端和基站
KR102429435B1 (ko) 랜덤 액세스 프로세스에서 시간-주파수 리소스를 결정하고 구성하는 방법들 및 장치들
US20180241526A1 (en) Discovery and random access for shared spectrum
US20180027595A1 (en) Methods and devices for random access
CN113615304B (zh) 用于在随机接入过程中使用多个上行链路资源集合的技术
RU2536358C2 (ru) Мобильная станция и базовая радиостанция
US10701620B2 (en) Methods, network node and wireless device for handling access information
TW202143783A (zh) 用於隨機存取通訊的波束細化技術
US11632804B2 (en) Apparatus and methods for multi-cell random access channel
CN114830739A (zh) 用于在无线通信系统中处理系统信息请求的方法和装置
CN117099435A (zh) 一种通信方法、装置和系统
US11115109B2 (en) Methods and systems for establishing a connection between devices in unlicensed radio frequency spectrum
WO2023088117A1 (fr) Procédé et appareil d'accès initial
WO2024099185A1 (fr) Procédé et appareil d'accès aléatoire, terminal, dispositif côté réseau et support
WO2023093647A1 (fr) Procédé et appareil d'accès initial
CN117413592A (zh) 通信方法、终端、网络设备、介质、芯片、产品及程序

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16861620

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16861620

Country of ref document: EP

Kind code of ref document: A1