WO2017194014A1 - Procédé d'accès aléatoire, procédé et appareil de transmission d'informations, dispositif, et support d'informations - Google Patents

Procédé d'accès aléatoire, procédé et appareil de transmission d'informations, dispositif, et support d'informations Download PDF

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Publication number
WO2017194014A1
WO2017194014A1 PCT/CN2017/084235 CN2017084235W WO2017194014A1 WO 2017194014 A1 WO2017194014 A1 WO 2017194014A1 CN 2017084235 W CN2017084235 W CN 2017084235W WO 2017194014 A1 WO2017194014 A1 WO 2017194014A1
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WIPO (PCT)
Prior art keywords
information
random access
network side
optimal
resource
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PCT/CN2017/084235
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English (en)
Chinese (zh)
Inventor
吴丹
童辉
侯雪颖
王飞
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团公司
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.)
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Priority claimed from CN201610320307.9A external-priority patent/CN106900075A/zh
Priority claimed from CN201610320096.9A external-priority patent/CN106900074B/zh
Priority claimed from CN201610666116.8A external-priority patent/CN106888507B/zh
Application filed by 中国移动通信有限公司研究院, 中国移动通信集团公司 filed Critical 中国移动通信有限公司研究院
Publication of WO2017194014A1 publication Critical patent/WO2017194014A1/fr

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    • 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
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a random access method, an information transmission method, an apparatus, a related device, and a computer readable storage medium.
  • Massive Multiple-Input-Multiple-Output (Massive Multiple-Output) technology is an extension of traditional MIMO technology and is an important research direction of fifth-generation (5G) wireless communication.
  • Massive MIMO technology achieves an unprecedented level of system performance by increasing the number of antennas for communication and adopting a time division duplex communication mode.
  • LTE Long Term Evolution
  • PDCCH physical downlink control channel
  • the narrow beam can concentrate the power, so that the far-reaching users have the opportunity to access the system, but because of the smaller angular expansion, the horizontal coverage is reduced.
  • the base station can form multiple beams in different directions, transmit in sequence, and implement coverage by means of sweeping beams.
  • the increase in the number of terminal antennas makes it possible for the terminal to perform uplink beamforming. Therefore, this possibility needs to be considered in the access procedure.
  • a simplest access procedure includes a base station transmitting a main system information block (MIB) and a system information block (SIB, System) on a specified resource block (RE, Resource Block) resource by means of a sweeping beam.
  • MIB main system information block
  • SIB system information block
  • RE Resource Block
  • Information Block the terminal is also in the corresponding RE
  • a plurality of receiving beams are formed on the resource to receive the system information.
  • the terminal After receiving the system information, the terminal sends a random access sequence by using a sweeping beam on the designated physical random access channel (PRACH) resource. Scanning beam reception is performed on the corresponding RE resources, and the access process is completed after one round of base station and terminal scanning the beams.
  • PRACH physical random access channel
  • the resource overhead of the access device such as the base station and the terminal is increased, and the access delay is also increased.
  • Beamforming a beam with a wider width and a narrower energy can be obtained, thereby increasing the transmission distance of the signal.
  • Beamforming techniques have been used in the transmission of user-specific data channels in LTE systems to achieve an increase in data channel coverage.
  • the beamforming technique based on single beam cannot guarantee the initiality of the broadcast channel because the beam width is narrowed. Access control channel coverage.
  • the basic multi-beam transmission method of beam scanning can solve this problem. The coverage of the communication system can be ensured by using a plurality of beams of different angles for scanning in turn.
  • the base station can determine that the optimal or better beam is selected from the multiple beams for transmission, thereby ensuring coverage and reducing overhead.
  • Embodiments of the present invention provide a random access processing method, an information transmission method, an apparatus, a related device, and a computer readable storage medium.
  • the embodiment of the invention provides a random access method implemented by the terminal side, including:
  • the system information that is sent by using the transmitting beams that are different in the M direction, where the system information carries the configuration information of the time-frequency resources that are used to send the random access information, where M is a natural number; determining the optimal receiving beam information of the terminal side and the optimal transmitting beam information of the network side respectively; and according to the configuration information and the determined optimal receiving beam information of the terminal side and the optimal transmitting beam information of the network side, The network side sends random access information;
  • the network side Receiving system information transmitted by the network side using different transmit beams of M directions, wherein N and M are natural numbers; determining an optimal transmit beam on the network side; and transmitting random access to the network side
  • the request, the random access request carries network-side optimal transmit beam indication information.
  • the embodiment of the invention provides a random access device implemented by the terminal side, including:
  • the first receiving unit is configured to receive, by using the receiving beams with different directions in the N direction, system information that is sent by using the transmitting beams that are different in the M direction, where the system information carries the time-frequency resources that are used to send the random access information.
  • Configuration information where N and M are natural numbers;
  • a first determining unit configured to determine terminal-side optimal receiving beam information and network-side optimal transmitting beam information, respectively;
  • the first sending unit is configured to send random access information to the network side according to the configuration information and the determined terminal-side optimal receiving beam information and network-side optimal transmitting beam information.
  • the embodiment of the invention provides a terminal, which includes the random access device implemented by the terminal side.
  • the embodiment of the invention provides a random access method implemented by the network side, including:
  • System information is transmitted to a user equipment (UE, User Equipment) by using a transmission beam with different M directions, where the system information carries configuration information of a time-frequency resource for transmitting random access information, where M is a natural number; Decoding the random access information sent by the UE according to the configuration information;
  • the embodiment of the invention provides a random access device implemented on the network side, including:
  • the third sending unit is configured to send system information to the UE by using different transmit directions of the M directions, where the system information carries configuration information of a time-frequency resource for transmitting random access information, where M is a natural number;
  • a third receiving unit configured to receive random access information sent by the UE according to the configuration information, or
  • the device includes:
  • the fourth sending unit is configured to send system information to the UE by using different transmit directions of M directions, where the M is a natural number;
  • the fourth receiving unit is configured to receive a random access request that is sent by the UE after receiving the system information, where the random access request carries network-side optimal transmit beam indication information.
  • the embodiment of the invention provides a base station, which includes the random access device implemented by the network side.
  • the embodiment of the invention provides an information transmission method, which is applied to a terminal, and the method includes:
  • the base station Receiving first information that is sent by the base station in a multi-beam based manner; the first information includes first system information and/or synchronization information;
  • the request information is reported to the base station by using the determined reporting resource; the request information is used to request the base station to send the corresponding third information.
  • the embodiment of the invention provides an information transmission method, which is applied to a base station, and the method includes:
  • the first information includes first system information and/or synchronization information
  • the second information characterizing the optimal transmit beam information when the multi-beam based manner is sent;
  • An embodiment of the present invention provides a terminal, where the terminal includes:
  • a first receiving unit configured to receive first information that is sent by the base station in a multi-beam based manner; the first information includes at least first system information and/or synchronization information;
  • a first acquiring unit configured to acquire second information when the base station transmits in a multi-beam based manner; the second information represents optimal transmit beam information when transmitting in a multi-beam based manner;
  • a first determining unit configured to determine, by using the second information, a reporting resource required for reporting the request information in the reserved resource
  • the reporting unit is configured to report the request information to the base station by using the determined reporting resource, where the request information is used to request the base station to send the corresponding third information.
  • An embodiment of the present invention provides a base station, where the base station includes:
  • a first sending unit configured to send the first information in a multi-beam based manner;
  • the first information includes first system information and/or synchronization information;
  • a second receiving unit configured to receive request information reported by the terminal
  • the second obtaining unit is configured to obtain the reporting resource occupied by reporting the request information during the receiving process
  • a second determining unit configured to determine second information according to reporting the reporting resource occupied by the request information; the second information characterizing optimal transmit beam information when transmitting in a multi-beam based manner; according to the second Information, determining a transmission resource required to send the third information corresponding to the request information;
  • the second sending unit is configured to send the third information corresponding to the request information to the terminal by using the determined sending resource.
  • Embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of the foregoing method.
  • the random access method, device, related device, and computer readable storage medium can reduce the access delay while reducing the resource overhead of the related access device.
  • the network side uses multiple beams to transmit system information to the terminal, and the transmitted system information carries configuration information of the time-frequency resources available for the terminal to send the random access information, and the terminal side uses multiple beam reception.
  • the system information transmitted by the network side, the terminal can determine the optimal terminal side receiving beam information and the optimal network side transmitting beam information, and accordingly, the terminal can determine the optimal receiving beam information and configuration information of the terminal side according to the determined terminal side.
  • the optimal transmit beam information on the network side sends the random access information to the network side without transmitting random access information to the network side on multiple beams, thereby saving the processing resource overhead of the terminal and reducing the access delay.
  • the random access request sent by the terminal to the network side carries the network-side optimal transmit beam indication information, so that the network side can determine the optimal transmit beam on the network side, and the subsequent network side sends the random access response to the terminal.
  • the optimal transmission beam can be transmitted without using the sweeping beam mode, thereby saving the processing resource overhead of the network side and reducing the random access delay.
  • the terminal receives the first information that is sent by the base station in a multi-beam based manner; the first information includes the first system information and/or the synchronization information; and the acquiring the base station is Second information when transmitting in a multi-beam based manner; the second information characterizing optimal transmit beam information when transmitting in a multi-beam based manner; determining, by using the second information, the report request information in the reserved resource
  • the required reporting resource is used to report the request information to the base station by using the determined reporting resource; the request information is used to request the base station to send the corresponding third information; and the base station receives the request information reported by the terminal; and obtains the request information during the receiving process.
  • FIG. 1 is a schematic flowchart of an implementation process of a random access method implemented on a terminal side according to an embodiment of the present disclosure
  • FIG. 1b is a mapping relationship between a time-frequency resource available for transmitting a random access information by a UE and a beam direction information of a transmitting beam of a network side according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of an implementation process of a random access method implemented by a base station side according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of an implementation process of random access and information transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a random access device implemented on a terminal side according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a random access apparatus implemented on a network side according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a random access system according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of another implementation manner of a random access method implemented by a terminal side according to an embodiment of the present disclosure
  • FIG. 8 is a schematic flowchart of an implementation process of a random access method implemented by another base station according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of an implementation process of random access and information transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a random access apparatus implemented on a terminal side according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of a random access apparatus implemented on a network side according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a random access system according to an embodiment of the present invention.
  • FIG. 13 is a schematic flowchart of implementing on-demand transmission system information by means of sweeping a beam in a related art
  • FIG. 14 is a schematic flowchart of a method for transmitting information on a terminal side according to an embodiment of the present invention.
  • 15a-d are schematic diagrams showing the form of optimal transmit beam information according to an embodiment of the present invention.
  • 16a-d are schematic diagrams showing correspondence between report resources and optimal transmit beam information according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a timing relationship between a reserved resource and a previous step of receiving the first information according to an embodiment of the present invention.
  • 18a-b are schematic diagrams showing the relationship between reserved resources and system bandwidth according to an embodiment of the present invention.
  • FIG. 19 is a schematic flowchart of a method for transmitting information on a base station side according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • 21 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the embodiment of the present invention provides a random access method, device, related device, and system.
  • the random access method provided by the embodiment of the present invention can be applied to a mobile communication system, and is particularly applicable to a Time Division Duplexing (TDD) system.
  • TDD Time Division Duplexing
  • both the base station and the terminal need to send or receive information by means of sweeping the beam, which not only increases the overhead of processing resources of the base station and the terminal, but also increases random access. And information transmission delay.
  • the channel reciprocity of the TDD system is used, and the mapping relationship between the transmit beam and the access time-frequency resource of the base station is added to the system information, thereby the initial step of initiating the access process in the terminal.
  • the use of deterministic beam transmission without the use of sweep beam transmission can simplify the beamforming based access procedure, reduce the overhead of processing resources of the terminal and reduce the access delay.
  • FIG. 1a a schematic flowchart of an implementation process of a random access method provided by an embodiment of the present invention is provided on a terminal side, which may include the following steps:
  • the UE uses the receiving beams with different directions in the N direction to receive system information that is sent by the network side using the transmitting beams with different M directions.
  • the network side base station may send the system information by using a sweeping beam, that is, the base station forms M transmit beams with different directions, and sends the system information to the UE by using the M transmit beams with different directions.
  • the transmit beam of the base station is marked as eNBT 1 , eNBT 2 ... eNBT M , and these beams can be used to transmit system information transmission resources in the existing LTE system, or can be transmitted in the vicinity of existing LTE system information transmission resources.
  • the transmission period of the system information is reduced to 1/M of the existing LTE system
  • the transmission resources of the existing LTE system are required to be M times.
  • the UE receives the system information sent by the base station by means of the sweeping beam, that is, the terminal forms the receiving beam receiving system information with different directions in the N direction, and the receiving beam labels of the UE are labeled as UER 1 , UER 2 ... UER N .
  • the received system information carries configuration information of a time-frequency resource for transmitting random access information, and N and M are natural numbers.
  • the UE determines the optimal receiving beam information of the terminal side and the optimal transmitting beam information of the network side, respectively.
  • the UE can determine the optimal receive beam on the terminal side and the optimal receive beam on the network side according to certain principles. For example, the UE can determine the highest signal to noise ratio and/or signal. The receiving beam with the strongest intensity is the optimal receiving beam of the terminal side, and the beam direction information of the transmitting beam that matches the direction of the optimal receiving beam is determined to be the optimal transmitting beam of the network side. Correspondingly, the UE may determine that the beam direction information of the optimal transmit beam of the network side is the optimal transmit beam information of the network side and the beam direction information of the optimal receive beam of the terminal side is the optimal receive beam information of the terminal side.
  • the UE sends the random access information to the network side according to the configuration information carried in the system information, the determined terminal-side optimal receiving beam information, and the network-side optimal transmitting beam information.
  • the beam direction corresponding to the optimal receiving beam information of the terminal side determined in step S12 is also the optimal transmission of the UE.
  • the direction of the beam therefore, when the UE needs to perform uplink random access, it can directly send random access information in the direction of the optimal receiving beam of the terminal side determined by the UE.
  • the network side pre-configures the uplink access time-frequency resources available to the UE by using the transmitted system information.
  • the network side may pre-define the time-frequency resources that the UE sends the random access information into the M group.
  • a time-frequency resource group corresponds to a beam direction of a transmitting beam, as shown in FIG. 1b, which is a schematic diagram of a correspondence between a time-frequency resource available for transmitting the random access information and a transmitting beam at the network side.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division.
  • the time-frequency resources available for transmitting the random access information may be continuous or non-contiguous in the time domain. Similarly, it may be continuous or non-contiguous in the frequency domain; the relationship between each time-frequency resource group may be time-division, frequency-divided, or both.
  • the corresponding relationship is embodied in the system information, and includes a relationship between a time-frequency resource location and a beam sequence number or a beam feature, or a relationship between a resource start location, a resource pattern, and a beam sequence or a beam feature is sent in the embodiment of the present invention.
  • the base station stores the mapping relationship between the group identifier of the time-frequency resource group and the beam direction information of the transmitting beam, and the base station notifies the mapping relationship of the UE by signaling, and the mapping relationship may be a one-to-one relationship, that is, a group identifier and a beam.
  • the direction information is corresponding to the one-to-one relationship, that is, the multiple group identifiers are associated with one beam direction information, which is not limited in this embodiment of the present invention. Therefore, the configuration information carried in the system information sent by the base station to the UE may be a mapping relationship between the group identifier of the time-frequency resource group and the beam direction information of the transmitting beam.
  • the beam direction information may be any information that can indicate the direction of the beam, which is not limited in this embodiment of the present invention.
  • the step S13 may be implemented according to the following process: the UE searches for the group identifier corresponding to the beam direction information of the network-side optimal transmit beam from the mapping relationship carried in the system information; the UE searches for the time-frequency resource corresponding to the found group identifier. According to the beam direction information of the optimal receiving beam on the terminal side, the random access information is sent to the network side by using the corresponding beam direction.
  • the UE After obtaining the system information, the UE needs to send the random access information in the uplink direction, and the random access information may be a random access sequence, and the UE adopts the terminal-side optimal receiving beam determined in step S12, and is assumed to be UER i ( The beam direction of 1 ⁇ i ⁇ N) is used as the uplink transmission beam direction to transmit random access information to the network side.
  • the UE When transmitting the random access information, the UE determines, according to the mapping relationship between the group identifier of the time-frequency resource group and the beam direction information of the transmitting beam, which are available in the system information, The group identifier j of the time-frequency resource group of the beam direction information (assumed to be eNBT j ), and the UE transmits the random access information to the network side using the beam direction of the terminal-side optimal reception beam UER i on the corresponding time-frequency resource group.
  • the embodiment of the present invention may be implemented according to the flow shown in FIG. 2 Access method:
  • the base station sends system information to the UE by using M transmit beams with different directions.
  • the system information carries configuration information of a time-frequency resource that is used to send random access information, where M is a natural number.
  • step S21 corresponds to the above-mentioned step S11.
  • step S11 For the specific implementation process, refer to the implementation of step S11, and details are not described herein again.
  • the base station receives random access information that is sent by the UE according to the configuration information.
  • the base station since the optimal transmit beam direction of the terminal side of the UE and the optimal transmit beam direction of the UE are not known, the base station still needs to receive the random mode by using the swept beam on the time-frequency resource that the UE sends the random access information. Access information, but the base station only transmits the random access information on the time-frequency resource group j corresponding to the optimal transmit beam of the network side of the base station using the terminal-side optimal receive beam direction of the UE. Random access information is detected on resource group j.
  • the random access method implemented by the network side may further include the following steps:
  • the base station may determine the group identifier of the time-frequency resource group used by the UE to send the random access information, and search for the UE to send the random access information in the mapping relationship between the group identifier of the time-frequency resource group and the beam direction information of the transmitting beam.
  • the beam direction information corresponding to the group identifier of the time-frequency resource group used is determined, and the found beam direction information is determined as the optimal transmit beam information of the network side; and the beam direction of the UE transmitting the random access information is the terminal-side optimal transmit beam of the UE.
  • determining that the time-frequency resource included in the time-frequency resource group used by the UE to send the random access information is a time-frequency resource that sends a random access response.
  • the base station may search for the beam direction information of the corresponding transmit beam from the mapping relationship between the group identifier of the time-frequency resource group and the beam direction information of the transmit beam according to the group identifier j of the detected time-frequency resource group.
  • the eNB is the eNBT j . Therefore, the base station can determine the beam direction information of the optimal transmit beam of the network side of the base station. According to the reciprocity of the uplink and downlink channels, this is also the optimal receive beam direction of the network side.
  • the downlink information is sent to the UE by using the corresponding beam direction according to the beam direction information of the optimal transmit beam on the network side.
  • the optimal transmit beam direction of the network side, the optimal receive beam direction of the network side, the optimal receive beam direction of the terminal side, and the optimal transmit beam of the terminal side may be determined according to the access flow.
  • the direction transmits and receives information without performing sweep beam reception, thereby saving overhead of processing resources of the base station and the UE, and reducing information transmission delay.
  • the UE may send uplink information to the network side according to the determined beam direction information of the optimal transmit beam of the terminal side (UER i in the above example), and the network side according to the network side
  • the determined network-side optimal receive beam direction information uses the corresponding beam direction to receive the uplink information sent by the UE; the network side uses the corresponding beam direction according to the beam direction information of the optimal transmit beam of the network side.
  • (eNBT j in the above example) transmits downlink information to the UE, and the UE receives the downlink information transmitted by the network side according to the determined terminal-side optimal reception beam direction information using the corresponding beam direction (UER i in the above example).
  • the UE may further adjust the corresponding beam direction according to more accurate channel information or beam information obtained in each step to achieve better transmission performance.
  • the network side can also adjust the corresponding beam direction according to more accurate channel information or beam information obtained at each step to achieve better transmission performance.
  • access messages of different UEs may be differentiated by using beam direction, time-frequency resources, and random access sequences, so that multi-user access can be better supported: when there are multiple expectations in the system
  • the random access sequence may be transmitted on different time-frequency resources, and no interference will occur between multiple users; if the direction of the beams selected by multiple terminals is the same
  • the selected random access sequence is different, and the base station side can also distinguish. Therefore, the random access method provided by the embodiment of the present invention can better distinguish the random access request of multiple users and better support multi-user transmission.
  • the UE only performs the single when receiving the system information.
  • Receiving to the sweep beam the subsequent steps only need to be sent and received in a single beam direction to complete the random access procedure, thereby reducing the number of sweeping beams in the random access process and simplifying the access process based on the beamforming method.
  • the terminal resource overhead and access delay are reduced.
  • the network side base station For the network side base station, it only needs to use the sweeping beam mode to transmit and receive information when the UE transmits the system information and receives the random access information sent by the UE in a single beam direction, and the execution is completed. After the above two steps, the network side can also know its own optimal transmit beam direction and the optimal receive beam direction of the UE. Then, the network side only needs to send and receive information in a single direction, thereby reducing the resources of the network side base station. Overhead, reducing the information transmission delay.
  • the network side sends system information to the UE by using different transmit beams in M directions.
  • the network side needs to configure the time-frequency resources that the UE sends the random access information in advance, and carries the corresponding configuration information in the sent system information.
  • the network side may divide the time-frequency resources that the UE sends the random access information into M groups, and each group corresponds to the beam direction of one network side transmitting beam.
  • the configuration information carried in the system information may be a mapping relationship between the group identifier of the time-frequency resource group in which the random access information is available and the beam direction information of the transmission beam formed by the network side transmission system information.
  • the network side forms M transmit beams with different directions to transmit system information in a sweeping manner.
  • the UE forms N receiving beams to receive system information sent by the network side.
  • the UE receives system information by means of a sweep beam.
  • the UE determines the optimal receive beam information on the terminal side and the optimal transmit beam information on the network side.
  • the UE may determine the optimal receive beam of the terminal side and the optimal transmit beam of the network side according to the signal to noise ratio of the transmit beam and the receive beam, and determine the beam direction information of the optimal receive beam of the terminal side as the optimal transmit beam information of the terminal side. And determining beam direction information of the optimal transmit beam on the network side as optimal receive beam information on the network side.
  • the UE sends the random access information to the network side according to the determined terminal-side optimal receive beam information and the network-side optimal transmit beam information.
  • the UE can determine that the optimal receiving beam at the terminal side is also the optimal transmitting beam at the terminal side. Therefore, the UE can use the determined optimal receiving beam information of the terminal side in the corresponding beam direction.
  • a single beam direction transmits random access information to the network side.
  • the mapping relationship between the group identifier of the time-frequency resource group available for the random access information and the beam direction information of the transmit beam formed by the network-side transmitting system information may be sent by the UE carried in the system information. And determining the optimal transmit beam information of the network side, determining a time-frequency resource group corresponding to the beam direction information of the optimal transmit beam of the network side, and transmitting the random access by using the optimal receive beam direction of the terminal side on the corresponding time-frequency resource information.
  • the network side receives random access information.
  • the network side still needs to form multiple beams. All time-frequency resources that are available to the UE to send random access information can receive random access information through the sweeping beam mode, but since the UE is only in a specific time-frequency resource group (assuming the group identifier is j) is transmitted in a single direction, so the network side only receives random access information on the time-frequency resource group j.
  • the network side determines the optimal transmit beam information on the network side and the optimal transmit beam information on the terminal side.
  • the network side determines the optimal transmit beam direction information of the network side according to the group identifier of the time-frequency resource group that receives the random access information, and determines the terminal side optimal according to the beam direction of the UE transmitting the random access information. Transmit beam direction information.
  • both the network side base station and the UE have obtained the optimal transmit beam direction and the optimal receive beam direction of each other, and in the subsequent uplink and downlink information transmission steps, the sum may be sent according to the optimal transmit beam direction and the optimal receive beam direction of each other. Receive information.
  • the UE sends uplink information to the network side by using a corresponding beam direction according to beam direction information of the optimal receiving beam at the terminal side.
  • the UE may adjust the corresponding beam direction according to more accurate channel information or beam information obtained at each step to achieve better transmission performance.
  • the network side sends downlink information to the UE by using a corresponding beam direction according to beam direction information of the optimal transmit beam of the network side.
  • the network side can adjust the corresponding beam direction according to more accurate channel information or beam information obtained at each step to achieve better transmission performance.
  • the terminal side and the network side are further provided in the embodiment of the present invention.
  • Random access devices, related devices and systems that are not implemented since the principles of solving the above-mentioned devices, devices, and systems are similar to the random access methods implemented on the terminal side and the network side, respectively, the implementation of the devices, devices, and systems described above may be implemented. See the implementation of the method, and the repetition will not be repeated.
  • FIG. 4 is a schematic structural diagram of a random access device implemented on a terminal side according to an embodiment of the present invention, including:
  • the first receiving unit 41 is configured to receive, by using the receiving beams that are different in the N directions, system information that is sent by using the transmitting beams that are different in the M direction, where the system information carries the time-frequency resources that are used to send the random access information.
  • Configuration information where N and M are natural numbers;
  • the first determining unit 42 is configured to determine terminal-side optimal receiving beam information and network-side optimal transmitting beam information, respectively.
  • the first sending unit 43 is configured to send random access information to the network side according to the configuration information and the determined terminal-side optimal receiving beam information and network-side optimal transmitting beam information.
  • the configuration information includes a mapping relationship between a group identifier of a time-frequency resource group in which the random access information is available and a beam direction information of the sending beam, where the network-side optimal transmitting beam information includes an optimal network side.
  • the first sending unit 43 includes:
  • the locating unit 431 is configured to search for a group identifier corresponding to the beam direction information of the network-side optimal transmit beam from the mapping relationship carried in the system information.
  • the sending sub-unit 432 is configured to send the random access information to the network side by using the corresponding beam direction according to the beam direction information of the optimal receiving beam of the terminal side on the time-frequency resource corresponding to the found group identifier.
  • the first sending unit 43 may be configured to send uplink information to the network side according to the beam direction information of the optimal receiving beam of the terminal side after the random access is successful.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain; Corresponding relationship between time-frequency resources and transmit beams available for transmitting random access information is time-division and/or frequency-division
  • the first determining unit 42 includes:
  • the first determining subunit 421 is configured to determine that the beam direction information of the receiving beam with the highest signal to noise ratio is the terminal side optimal receiving beam information;
  • the second determining subunit 422 is configured to determine that the beam direction information of the transmit beam that matches the optimal receive beam direction is the network side optimal transmit beam information.
  • the first receiving unit 41, the first sending unit 43, the first determining unit 42, the searching subunit 431, and the transmitting subunit 432 may be implemented by a processor in a random access device implemented by the terminal side in combination with a network interface.
  • the random access device implemented on the terminal side further includes a memory.
  • the above parts are respectively divided into modules (or units) according to functions.
  • the functions of the various modules (or units) may be implemented in one or more software or hardware in the practice of the invention.
  • the random access device shown in FIG. 4 can be disposed in the terminal.
  • FIG. 5 it is a schematic structural diagram of a random access device implemented by a network side according to an embodiment of the present invention, which may include:
  • the third sending unit 51 is configured to send system information to the UE by using different transmit directions of the M directions, where the system information carries configuration information of a time-frequency resource for transmitting random access information, where M is a natural number;
  • the third receiving unit 52 is configured to receive random access information that is sent by the UE according to the configuration information.
  • the random access device implemented on the network side may further include:
  • the third determining unit 53 is configured to determine, according to the received random access information, network-side optimal transmit beam information, terminal-side optimal transmit beam information of the UE, and time-frequency resources for transmitting a random access response.
  • the configuration information includes a mapping relationship between a group identifier of a time-frequency resource group in which the random access information is available and beam direction information of the transmitting beam, and the random access information is the UE according to the
  • the third determining unit 53 includes:
  • a first determining sub-unit 531 configured to determine a group identifier of a time-frequency resource group used by the UE to send the random access information, where the mapping is used to search for a time when the UE sends the random access information
  • the beam direction information corresponding to the group identifier of the frequency resource group is determined, and the found beam direction information is determined as the optimal transmit beam information of the network side;
  • a second determining sub-unit 532 configured to determine that a beam direction in which the UE sends the random access information is terminal-side optimal transmit beam information of the UE;
  • the third determining sub-unit 533 is configured to determine that the time-frequency resource included in the time-frequency resource group used by the UE to send the random access information is a time-frequency resource that sends a random access response.
  • the third sending unit 51 is further configured to: after the random access succeeds, send downlink information to the UE by using a corresponding beam direction according to beam direction information of the optimal transmit beam of the network side.
  • the above parts are respectively divided into modules (or units) according to functions.
  • the functions of the various modules (or units) may be implemented in one or more software or hardware in the practice of the invention.
  • the random access device shown in FIG. 5 can be disposed in a base station.
  • the third sending unit 51 and the third receiving unit 52 may be implemented by a processor in a random access device implemented by the network side in combination with a network interface; the third determining unit 53 and the first determining subunit 531, The second determining subunit 532 and the third determining subunit 533 may be implemented by a processor in a random access device implemented by the network side.
  • the random access device implemented on the network side further includes a memory, a memory, and the processor acquires an instruction from the memory (which can be understood as a computer program) and implements its function in combination with hardware.
  • FIG. 6 it is a schematic structural diagram of a random access system according to an embodiment of the present invention, which may include a terminal (UE) 61 and a base station 62.
  • the terminal 61 is provided with a random access device as shown in FIG.
  • a random access device shown in FIG. 5 is provided in the base station 62.
  • the embodiment of the present invention further provides a random access method, device, related device and system.
  • the terminal side carries the network-side optimal transmit beam indication information in the random access request sent to the network side, so that the network side can determine the optimal transmit beam on the network side according to the network side, and the network side is the most
  • the optimal transmit beam transmits the downlink information such as the random access response to the UE in the corresponding beam direction without using the sweep beam mode, which simplifies the beamforming-based access procedure, reduces the overhead of the network side base station processing resources, and reduces Random access delay and information transmission delay.
  • the implementation flow diagram of the random access method provided by the embodiment of the present invention is implemented on the terminal side, and may include the following steps:
  • the UE uses the receiving beams with different directions in the N direction to receive system information that is sent by the network side using the transmitting beams with different M directions.
  • the network side base station may send the system information by using a sweeping beam, that is, the base station forms M transmit beams with different directions, and sends the system information to the UE by using the M transmit beams with different directions.
  • the transmit beam of the base station is marked as eNBT 1 , eNBT 2 ... eNBT M , and these beams can be used to transmit system information transmission resources in the existing LTE system, or can be transmitted in the vicinity of existing LTE system information transmission resources.
  • the transmission period of the system information is reduced to 1/M of the existing LTE system
  • the transmission resources of the existing LTE system are required to be M times.
  • the UE receives the system information sent by the base station by means of the sweeping beam, that is, the terminal forms the receiving beam receiving system information with different directions in the N direction, and the receiving beam labels of the UE are labeled as UER 1 , UER 2 ... UER N .
  • N and M are natural numbers.
  • the UE determines an optimal transmit beam on the network side.
  • the UE may first determine the optimal receive beam of the terminal side according to the received signal to noise ratio, and based on this, the beam direction of the optimal receive beam of the terminal side is matched.
  • the determination of the transmit beam is the network-side optimal transmit beam, assuming eNBT j , j is a natural number not greater than M.
  • the UE After obtaining the system information, the UE needs to send a random access request in the uplink direction, which includes random access information such as a random access sequence, and the UE sends the beam labels as UET1, UET2, ..., UETM', in addition to carrying the random access request.
  • the indication information of the network-side optimal transmit beam eNBTj determined by the UE is also included in the random access request, so that the base station can receive the random access request according to the network.
  • the side optimal transmit beam indication information determines the network side optimal transmit beam.
  • the UE may carry the network-side optimal transmit beam indication information in the random access request sent to the network side to notify the base station of the network side optimal transmit beam. .
  • the system information that the base station sends to the UE may carry at least one of the following information for determining the first corresponding relationship between the network side optimal transmit beam indication information and the corresponding indication identifier of the transmit beam identifier; a second correspondence between the first group identifier and the transmission beam identifier corresponding to the random access sequence group obtained by the random access sequence, and the time-frequency resource obtained by the UE transmitting the time-frequency resources available for the random access request.
  • the network side may pre-arrange the type of correspondence between the UE and the UE to determine the optimal transmit beam indication information of the network side, that is, the network side may pre-arrange the use of the first correspondence relationship or the second correspondence relationship with the UE, or In the three-relationship relationship, the UE selects a corresponding correspondence relationship according to the type of the correspondence relationship pre-agreed with the network side to determine the optimal beam indication information on the network side.
  • the network side indicates, by using signaling, the type of the correspondence relationship used by the UE to determine the optimal transmit beam indication information of the network side.
  • the second corresponding relationship there may be several corresponding manners shown in Table 2 to Table 4, if the network side and the terminal side pre-agreed the use.
  • the corresponding relationship includes the at least two corresponding manners, and the network side indicates, by using the signaling, the corresponding manner for the UE to determine the optimal transmit beam indication information of the network side, that is, the network side needs to indicate to the UE by using the signaling in Table 2 - Table 4 Which corresponding method determines the optimal transmit beam indication information on the network side.
  • the third correspondence includes a correspondence between a time-frequency resource location included in each time-frequency resource group and a beam identifier of the transmit beam (which may be a beam sequence number or a beam feature); or the third correspondence includes each time-frequency resource
  • the correspondence between the start position of the time-frequency resource, the resource mode, and the beam identifier of the transmit beam are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division.
  • FIG. 1b it is a schematic diagram of a correspondence between time-frequency resources available for the UE to send random access information and a transmit beam at the network side.
  • the correspondence between the RE (resource element) and the beam direction indicates that the time-frequency resource available for transmitting the random access information may be continuous or non-contiguous in the time domain; similarly, it may be continuous in the frequency domain. It may also be non-contiguous; the relationship between each time-frequency resource group may be time-division, frequency-divided, or both.
  • the correspondence relationship is embodied in the system information, and includes a relationship between a time-frequency resource location and a beam sequence number or a beam feature, or a relationship between a resource start position, a resource pattern, and a beam sequence number or a beam feature.
  • step S73 it may be implemented in any of the following manners in step S73:
  • the random access request is sent to the network side according to the first correspondence between the sending beam identifier and the corresponding indication identifier.
  • the UE may determine, according to the first correspondence, an indication identifier corresponding to the beam identifier of the optimal transmit beam of the network side; and the indication identifier corresponding to the determined beam identifier of the optimal transmit beam of the network side.
  • the network side optimal transmit beam indication information.
  • the terminal determines the optimal transmit beam of the network side transmit beam BTB2, and the UE searches for the corresponding indication identifier in Table 1, that is, 010, the random access that the terminal sends to the network side.
  • the 3 bit information 010 is used in the request to indicate the network side base station, so that the network side base station can determine the network side optimal transmit beam as BTB2 according to the indication identifier 010.
  • the bits occupied by the indication identifier are also different.
  • the second embodiment sends a random access request to the network side according to the second correspondence between the first group identifier and the transmit beam identifier corresponding to the random access sequence group obtained by grouping the random access sequence.
  • the network side may pre-divide the random access sequence into the M group. And assigning a corresponding group identifier to each group, that is, one group identifier corresponds to a group of random access sequences, and each group identifier corresponds to one network side transmitting beam, and after receiving the system information, the terminal is determined according to the determined network side.
  • the optimal beam is selected from a set of random access sequences corresponding to the optimal beam on the network side and is sent to the network side in a random access request, and the network side can determine the belongs according to the random access sequence selected by the terminal.
  • the random sequence group further determines the network side optimal transmit beam according to the first group identifier of the random sequence group to which it belongs.
  • the random access sequence included in each random access sequence group may be continuous and may be discontinuous.
  • Group identification Random access sequence number included Network side transmit beam identification G1 SN1-SN5 eNBT0 G2 SN6-SN7 eNBT1 G3 SN8-SN9 eNBT2 G4 SN10-SN12 eNBT3 ?? .... .
  • the network side and the terminal side may pre-agreed the number of random access sequences included in each random access sequence group, and thus, in the second correspondence relationship only It is required to indicate the starting random access sequence number of each group.
  • the network side and the terminal side stipulate that each random access sequence group includes three random access sequences, as shown in Table 3, which is a random access sequence.
  • Table 3 which is a random access sequence.
  • the network side and the terminal side may also stipulate that only the starting random access sequence number of each group is indicated in the second correspondence, according to the next
  • the start random access sequence number of the group determines the random access sequence number of the last group, as shown in Table 4, when the random sequence sequence number included in the random access sequence group is continuous, between the group identifier and the beam identifier
  • the second correspondence is shown:
  • the random access sequence number included in the group identifier G1 can be SN1-SN5
  • the starting random access sequence number of G3 is SN8
  • the random access sequence number included in the group identifier G2 can be SN6-SN7, and so on.
  • the termination random access sequence number may also be used in the second correspondence, and the initial random access sequence of the next group is determined according to the termination random access sequence number of the previous group.
  • the embodiment of the present invention does not limit this.
  • the UE may send a random to the network side in the following manner.
  • An access request determining, according to the second correspondence, a first group of identifiers corresponding to beam identifiers of the optimal transmit beams of the network side; sending a random access request to the network side, where the random access request carries the The first group of identifiers selects any random access sequence selected in the random access sequence group.
  • the third embodiment sends a random connection to the network side according to the third correspondence between the second group identifier and the transmission beam identifier corresponding to the time-frequency resource group obtained by grouping the time-frequency resources available for the UE to send the random access request. Into the request.
  • the network side may divide the time-frequency resources that the UE sends the random access request into the M group in advance, and assign a corresponding group identifier to each group, that is, one group identifier corresponds to a set of available access times.
  • a frequency resource and each group identifier corresponds to one network side transmission beam identifier
  • the terminal searches for the optimal beam identifier corresponding to the network side in the third correspondence relationship according to the determined network side optimal beam.
  • the second group of the frequency resource group sends a random access request to the network side on the time-frequency resource corresponding to the second group identifier, and the network side sends the random access according to the UE after receiving the random access request.
  • the group identifier of the time-frequency resource group used by the request is searched for the corresponding network-side transmit beam identifier, and the corresponding transmit beam corresponding to the network-side transmit beam identifier is determined to be the network-side optimal transmit beam.
  • the UE may further determine the terminal-side receiving beam with the highest signal-to-noise ratio as the terminal-side optimal receiving beam according to the receiving beam signal-to-noise ratio of the receiving system information of the terminal side, and assume that it is UER i , i Is a natural number not greater than N.
  • the random access method implemented by the terminal side may further include the following steps: receiving a random access response sent by the network side.
  • the UE may receive the random access response sent by the network side in the determined beam direction of the terminal-side optimal receiving beam (in this example, UER i ).
  • the random access response may carry the terminal-side optimal transmit beam indication information determined by the network side, and assume that the UE according to the terminal-side optimal transmit beam indication information carried in the random access response It is determined that the optimal transmit beam on the terminal side is UET r (r is a natural number not greater than M′).
  • the UE obtains the terminal side optimal transmit beam UET r and the terminal side optimal receive beam UER i .
  • the subsequent UE may send the uplink information to the network side by using the beam direction corresponding to the optimal transmit beam of the terminal side, and receive the downlink information sent by the network side in the beam direction corresponding to the optimal receive beam of the terminal side.
  • FIG. 8 it is a schematic flowchart of implementing a random access method provided by an embodiment of the present invention on a network side, which may include the following steps:
  • S81 Send system information to the UE by using different transmit beams in M directions.
  • step S81 The specific implementation process of the step 81 is similar to the above step S71. Therefore, the implementation of step S81 can refer to the above step S71, and details are not described herein again.
  • the system information carries at least one of the following information for determining the optimal transmit beam indication information of the network side: a first correspondence between the transmit beam identifier and the corresponding indication identifier; and randomizing the random access sequence
  • the first group of identifiers and transmission waves corresponding to the access sequence group A second correspondence between the bundle identifiers and a third correspondence between the second group identifiers corresponding to the time-frequency resource groups obtained by grouping the time-frequency resources available for the UE to obtain the random access request and the transmit beam identifiers.
  • the terminal may send a random access request to the UE according to the information carried in the system information to notify the network side of the optimal transmit beam.
  • the network side and the UE pre-approve the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side; or the network side uses the signaling to indicate the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side.
  • the network side For each corresponding relationship, if the corresponding relationship includes at least two corresponding manners, the network side indicates, by using signaling, a corresponding manner for the UE to determine the optimal transmit beam indication information of the network side.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division.
  • the third correspondence includes a correspondence between a time-frequency resource location included in each time-frequency resource group and a beam identifier of the transmission beam; or the third correspondence includes a start time of the time-frequency resource included in each time-frequency resource group, Correspondence between the resource mode and the beam identification of the transmit beam.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division. Specifically, it can be referred to FIG. 1b.
  • the base station can determine the optimal transmit beam on the network side according to the network-side optimal transmit beam indication information carried in the received random access request, which is eNBT j in this example.
  • the base station determines the optimal transmit beam on the network side according to the network side optimal beam indication information carried in the random access request.
  • the network side optimal transmit beam indication information is an indication identifier corresponding to the beam identifier of the network side optimal beam that is determined by the UE in the first correspondence relationship
  • the network side may follow the following method. Determine the optimal transmit beam on the network side:
  • the transmit beam corresponding to the found beam identifier is determined to be an optimal transmit beam on the network side.
  • the network side may determine the network-side optimal transmit beam according to the following method:
  • the transmit beam corresponding to the found beam identifier is determined to be an optimal transmit beam on the network side.
  • the network side may determine the network-side optimal transmit beam according to the following method:
  • the transmit beam corresponding to the found beam identifier is determined to be an optimal transmit beam on the network side.
  • the base station side can determine that the network side receiving beam with the highest signal to noise ratio is the optimal network side receiving beam, which is assumed to be eNBRk ( If the k is a natural number that is not greater than N', the base station may determine that the terminal side transmit beam that matches the optimal network side receive beam direction is the terminal side optimal transmit beam, and assume that the terminal side optimal transmit beam is the UETr.
  • the network side can determine that the optimal transmit beam on the network side is eNBT j and the optimal receive beam on the network side is eNBRk.
  • the subsequent network side may send downlink information to the UE in a beam direction corresponding to the optimal transmit beam of the network side, and receive uplink information sent by the UE in a beam direction corresponding to the optimal receive beam of the network side.
  • the base station After receiving the random access request sent by the UE, the base station responds to the request and sends a random access response to the UE. Similarly, the base station needs to carry the base station to determine the terminal-side optimal transmit beam UETr in the random access response. Instructions. In an embodiment, the base station may send a random access response to the UE according to the obtained beam direction corresponding to the optimal transmit beam of the network side.
  • the random access method implemented by the network side may further include: sending a random access response to the UE according to the beam direction corresponding to the optimal transmit beam according to the optimal transmit beam indication information of the network side, where the random access response carries The terminal side optimally transmits beam indication information.
  • the base station may join in the sent random access response.
  • the bit information is used to indicate the optimal transmit beam of the UE terminal side.
  • the base station may establish a correspondence between the beam identifier of each of the terminal side transmit beams and the indication identifier according to the transmit beam of the terminal side, and determine the corresponding indication identifier according to the determined beam identifier corresponding to the optimal transmit beam of the terminal side. And carrying the indication identifier in the random access response.
  • the base station should establish the established beam identifier of each terminal side transmission beam and the indication identifier. The UE is notified of the corresponding relationship, so that the UE determines the optimal transmit beam of the terminal side according to the indication identifier carried in the random access response.
  • the sweeping process in the random access process can be reduced, thereby simplifying the access process based on the beamforming method, reducing resource overhead and access delay.
  • the network side sends system information to the UE by using different transmit beams in M directions.
  • the network side forms M transmit beams with different directions to transmit system information in a sweeping manner. At least one of the following information may be included in the system information sent to the UE: the transmitting wave a first correspondence between the bundle identifier and the corresponding indication identifier; a second correspondence between the first group identifier corresponding to the random access sequence group obtained by grouping the random access sequence and the transmit beam identifier; sending the UE And a third correspondence between the second group identifier corresponding to the time-frequency resource group and the transmission beam identifier obtained by the time-frequency resource that is obtained by the random access request.
  • the UE forms N receiving beams to receive system information sent by the network side.
  • the UE receives system information by means of a sweep beam.
  • the UE determines an optimal receive beam on the terminal side and an optimal transmit beam on the network side.
  • the UE may determine the optimal receiving beam of the terminal side according to the signal to noise ratio of the receiving beam, and determine the transmitting beam that matches the beam direction of the optimal receiving beam of the terminal side as the network side optimal transmitting beam.
  • the UE sends a random access request to the network side.
  • the UE carries the network-side optimal transmit beam indication information in the random access request sent to the network side.
  • the UE may determine, according to at least one of the following information carried in the system information, the network-side optimal transmit beam indication information carried in the random access request: the first correspondence between the transmit beam identifier and the corresponding indication identifier; a second correspondence between the first group identifier and the transmit beam identifier corresponding to the random access sequence group obtained by grouping the random access sequence; and a time frequency obtained by grouping the time-frequency resources available for the UE to send the random access request.
  • the UE may determine, according to the first correspondence, an indication identifier corresponding to a beam identifier of an optimal transmit beam of the network side, and an indication corresponding to the determined beam identifier of the network-side optimal transmit beam.
  • the identifier is used as the network side optimal transmit beam indication information.
  • the UE may determine, according to the second correspondence, a first group identifier corresponding to a beam identifier of an optimal transmit beam of the network side, and send a random access request to the network side, where the random access request is used. And carrying any random access sequence selected from the group of random access sequences corresponding to the first group of identifiers.
  • the UE may determine, according to the third correspondence, a second group of identifiers corresponding to the beam identifiers of the network-side optimal transmit beams, and send the random interfaces to the network side on the time-frequency resources corresponding to the second group of identifiers. Into the request.
  • the network side receives a random access request.
  • the network side still needs to form multiple beams to receive random access requests in the sweep beam mode for all time-frequency resources available to the UE to send random access requests.
  • the network side determines an optimal transmit beam on the network side, an optimal receive beam on the network side, and an optimal transmit beam on the terminal side.
  • the network side determines the optimal transmit beam on the network side according to the network-side optimal transmit beam indication information carried in the received random access request, and the signal-to-noise ratio of the receive beam received by the network side according to the network side receiving the random access request.
  • the network side receiving beam with the highest signal to noise ratio is determined as the optimal network side receiving beam
  • the terminal side transmitting beam that matches the beam direction of the optimal network side receiving beam is determined to be the terminal side optimal transmitting beam.
  • the network side optimal transmit beam indication information is an indication identifier corresponding to the beam identifier of the network side optimal beam that is determined by the UE in the first correspondence relationship
  • the network side may follow the following The method determines the optimal transmit beam on the network side: according to the indication identifier corresponding to the beam identifier of the optimal beam on the network side, the corresponding beam identifier is searched from the first correspondence relationship; and the transmit beam corresponding to the found beam identifier is determined as the network side.
  • Optimal transmit beam is an indication identifier corresponding to the beam identifier of the network side optimal beam that is determined by the UE in the first correspondence relationship
  • the network side may determine the network side optimal transmit beam according to the following method: any one selected according to the UE The random access sequence is used to search for the beam identifier corresponding to the group identifier of the random access sequence group to which the random access sequence belongs, and determine the transmit beam corresponding to the discovered beam identifier as the network side optimal transmit beam. .
  • the network side may determine the optimal transmit beam on the network side according to the following method: The time-frequency resource used by the UE to send the random access request, the beam identifier corresponding to the group identifier of the time-frequency resource group to which the time-frequency resource belongs is searched from the third correspondence, and the transmit beam corresponding to the searched beam identifier is determined. Optimal beam transmission for the network side.
  • the network side sends a random access response to the UE.
  • the network side may send a random access response to the UE in the beam direction corresponding to the optimal transmit beam of the network side, and send the random access to the UE.
  • the response carries the terminal-side optimal transmit beam indication information.
  • the UE receives a random access response.
  • the UE can receive the random access response sent by the base station in the beam direction corresponding to the optimal receiving beam of the terminal side, and obtain the terminal side optimally carried in the terminal side.
  • the transmit beam indication information determines the terminal-side optimal transmit beam.
  • the UE sends uplink information to the network side in a beam direction corresponding to the optimal transmit beam of the terminal.
  • the UE can adjust the corresponding beam direction to make it more accurate according to more accurate channel information or beam information obtained in each step, so as to achieve better transmission performance.
  • the network side receives the uplink information sent by the UE in the beam direction corresponding to the optimal receiving beam of the network side.
  • the network side can further adjust the beam direction to make it more accurate.
  • the network side sends downlink information to the UE in a beam direction corresponding to the optimal transmit beam on the network side.
  • the network side can adjust the corresponding beam direction to make it more accurate according to more accurate channel information or beam information obtained in each step, so as to achieve better transmission performance.
  • the UE receives downlink information sent by the network side in a beam direction corresponding to the optimal receiving beam of the terminal side.
  • the UE can further adjust the beam direction to make it more accurate.
  • the terminal side and the network side are further provided in the embodiment of the present invention.
  • Random access devices, related devices and systems that are not implemented since the principles of solving the above-mentioned devices, devices, and systems are similar to the random access methods implemented on the terminal side and the network side, respectively, the implementation of the devices, devices, and systems described above may be implemented. See the implementation of the method, and the repetition will not be repeated.
  • FIG. 10 is a schematic structural diagram of a random access device implemented on a terminal side according to an embodiment of the present invention, including:
  • the second receiving unit 101 is configured to receive system information that is sent by the network side using different transmit directions of M directions, where N and M are natural numbers;
  • the second determining unit 102 is configured to determine an optimal transmit beam on the network side
  • the second sending unit 103 is configured to send a random access request to the network side, where the random access request carries network-side optimal transmit beam indication information.
  • the system information carries at least one of the following information for determining the optimal transmit beam indication information of the network side: a first correspondence between the transmit beam identifier and the corresponding indication identifier; and grouping the random access sequence a second correspondence between the first group of identifiers corresponding to the random access sequence group and the transmit beam identifier; and a second group identifier corresponding to the time-frequency resource group obtained by the UE transmitting the time-frequency resources available for the random access request A third correspondence relationship with the transmit beam identifier.
  • the network side and the UE pre-arrange the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side; or the network side indicates, by using the signaling, the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side; For each corresponding relationship, if the corresponding relationship includes at least two corresponding manners, the network side indicates, by using signaling, a corresponding manner for the UE to determine the optimal transmit beam indication information of the network side.
  • the third correspondence includes a correspondence between a time-frequency resource location included in each time-frequency resource group and a beam identifier of the transmission beam; or the third correspondence includes a start time of the time-frequency resource included in each time-frequency resource group, Correspondence between the resource mode and the beam identification of the transmit beam.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division.
  • the second determining unit 102 is further configured to: before the second sending unit 103 sends a random access request to the network side, determine, according to the first correspondence, the network side optimal The indicator identifier corresponding to the beam identifier of the transmitting beam is used as the network side optimal transmitting beam indication information.
  • the second determining unit 102 is further configured to: before the second sending unit 103 sends a random access request to the network side, determine, according to the second correspondence, the network side optimal The first group identifier corresponding to the beam identifier of the transmitting beam;
  • the second sending unit 103 is configured to send a random access request to the network side, where the random access request carries a random access sequence group corresponding to the first group identifier. Choose any random access sequence.
  • the second determining unit 102 is further configured to: before the second sending unit 103 sends a random access request to the network side, determine, according to the third correspondence, the network side optimal a second set of identifiers corresponding to the beam identifiers of the transmit beams;
  • the second sending unit 103 is further configured to send a random access request to the network side on the time-frequency resource corresponding to the second group identifier.
  • the second determining unit 102 is further configured to determine an optimal receiving beam on the terminal side;
  • the second receiving unit 101 is further configured to receive downlink information sent by the network side in a beam direction corresponding to the optimal receiving beam of the terminal side.
  • the second receiving unit 101 is further configured to receive a random access response sent by the network side, where the random access response carries the terminal-side optimal transmit beam indication determined by the network side. information;
  • the second sending unit 103 is further configured to send uplink information to the network side by using a beam direction corresponding to the optimal transmit beam according to the terminal-side optimal transmit beam indication information.
  • the above parts are respectively divided into modules (or units) according to functions.
  • the functions of the various modules (or units) may be implemented in one or more software or hardware in the practice of the invention.
  • the random access device shown in FIG. 10 can be disposed in the terminal.
  • the second receiving unit 101 and the second sending unit 103 may be implemented by a processor in a random access device implemented by the terminal side in combination with a network interface; the second determining unit 102 may be implemented in a random access device implemented by the terminal side.
  • Processor implementation of course, of course, the random access device implemented on the terminal side further includes a memory, a memory, and the processor acquires an instruction from the memory (which can be understood as a computer program) and implements its function in combination with hardware.
  • FIG. 11 is a schematic structural diagram of a random access device implemented on a network side according to an embodiment of the present disclosure, which may include:
  • the fourth sending unit 111 is configured to send system information to the UE by using different transmit directions of M directions, where the M is a natural number;
  • the system information carries at least one of the following information for determining the optimal transmit beam indication information of the network side: a first correspondence between the transmit beam identifier and the corresponding indication identifier; and randomizing the random access sequence a second correspondence between the first group of identifiers corresponding to the access sequence group and the transmit beam identifier; and a second group of identifiers corresponding to the time-frequency resource group obtained by the UE transmitting the time-frequency resources available for the random access request The third correspondence between the beam identifiers.
  • the network side and the UE pre-approve the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side; or the network side uses the signaling to indicate the type of the correspondence relationship that the UE uses to determine the optimal transmit beam indication information of the network side. For each corresponding relationship, if the corresponding relationship includes at least two corresponding manners, the network side indicates, by signaling, that the UE is used to determine the network. The corresponding mode of the side optimal transmit beam indication information.
  • the third correspondence includes a correspondence between a time-frequency resource location included in each time-frequency resource group and a beam identifier of the transmission beam; or the third correspondence includes a start time of the time-frequency resource included in each time-frequency resource group, Correspondence between the resource mode and the beam identification of the transmit beam.
  • the time-frequency resources available for transmitting the random access information are consecutive in the time domain and/or the frequency domain; or the time-frequency resources available for transmitting the random access information are discontinuous in the time domain and/or the frequency domain;
  • the relationship between frequency resource groups is time division and/or frequency division.
  • the fourth receiving unit 112 is configured to receive a random access request that is sent by the UE after receiving the system information, where the random access request carries network-side optimal transmit beam indication information.
  • the fourth sending unit 111 is further configured to send downlink information to the UE according to the beam direction corresponding to the optimal sending beam according to the network side optimal sending beam indication information.
  • the fourth sending unit 111 is configured to send, according to the network side optimal sending beam indication information, a random access response to the UE by using a beam direction corresponding to the optimal sending beam, the random The access response carries the terminal-side optimal transmit beam indication information.
  • the random access device may further include:
  • the first searching unit is configured to search for a corresponding beam identifier from the first correspondence relationship according to the indication identifier corresponding to the beam identifier of the optimal beam of the network side;
  • the first beam determining unit is configured to determine that the transmit beam corresponding to the beam identifier searched by the first search unit is a network side optimal transmit beam.
  • the random access device implemented by the network side may further include:
  • a second searching unit configured to search, according to any random access sequence selected by the UE, a beam identifier corresponding to the group identifier of the random access sequence group to which the random access sequence belongs according to the second corresponding relationship;
  • the second beam determining unit is configured to determine that the transmit beam corresponding to the beam identifier searched by the second search unit is a network side optimal transmit beam.
  • the random access device implemented by the network side may further include:
  • a third search unit configured to search for a beam identifier corresponding to the group identifier of the time-frequency resource group to which the time-frequency resource belongs according to the time-frequency resource used by the UE to send the random access request;
  • the third beam determining unit is configured to determine that the transmit beam corresponding to the beam identifier searched by the third search unit is a network side optimal transmit beam.
  • the random access device implemented on the network side may further include a fourth determining list. Yuan, where:
  • the fourth determining unit is configured to determine an optimal receive beam on the network side
  • the fourth sending unit 111 is further configured to receive uplink information sent by the terminal side in a beam direction corresponding to the optimal receiving beam of the network side.
  • the above parts are respectively divided into modules (or units) according to functions.
  • the functions of the various modules (or units) may be implemented in one or more software or hardware in the practice of the invention.
  • the random access device shown in FIG. 11 may be disposed in a base station.
  • the fourth sending unit 111 and the fourth receiving unit 112 may be implemented by a processor in a random access device implemented by the network side in combination with a network interface; a first searching unit, a first beam determining unit, a second searching unit, and a The two beam determining unit, the third searching unit, the third beam determining unit, and the fourth determining unit may be implemented by a processor in a random access device implemented by the network side.
  • the random access device implemented on the network side further includes a memory, a memory, and the processor acquires an instruction from the memory (which can be understood as a computer program) and implements its function in combination with hardware.
  • FIG. 12 it is a schematic structural diagram of a random access system according to an embodiment of the present invention, which may include a terminal (UE) 121 and a base station 122, where the terminal 121 is provided with a random access device as shown in FIG.
  • the base station 122 is provided with the random access device shown in FIG.
  • the system information is transmitted by using beam scanning, and the same system information needs to be repeatedly transmitted on multiple beams.
  • the N beams are used. Scanning on top requires consuming N times the resources of the prior art.
  • system information in the communication system is now sent periodically, and the system transmission resources consumed by the scanning beam greatly increase the system overhead.
  • On-demand system information transmission is a way to reduce overhead and only send system information when the terminal needs it.
  • a base station can transmit a synchronization signal and some basic system information (similar to MIB in LTE) by means of a sweep beam, System Information Block 1 (SIB1), System Information Block 2 (SIB2) The most basic system information).
  • SIB1 System Information Block 1
  • SIB2 System Information Block 2
  • the terminal first receives the information in multiple beam directions (step 121), and other system information except the information is not sent by the scan beam, only when the terminal needs to obtain further system information.
  • the system information request (SIR, SI Request) is reported (step 132). After receiving the SIR, the base station further sends subsequent system information based on the SIR to implement the on-demand transmission (133).
  • the terminal in order to implement system information to be transmitted on demand in a communication system based on multi-beam transmission, the terminal needs to report the SIR. Then, in the system information acquisition phase, since the terminal does not access the network, the terminal-specific request reporting cannot be performed (that is, the scheduling is specified/determined by the terminal to use a specific time-frequency resource/codeword for reporting), and only a PRACH-like method can be used. In the mode of transmission, since each user needs a fixed resource, and at least two users cannot use the same resource, although the SIR report can be implemented, the reporting resource overhead is also large.
  • FIG. 13 is a schematic flowchart of implementing on-demand transmission of system information by means of sweeping a beam in the related art.
  • the process of random access is implemented by means of sweeping the beam, there is also a problem that the reporting resource overhead is large.
  • the terminal receives the first information that the base station transmits in a multi-beam based manner; the first information includes first system information and/or synchronization information; and the acquiring the base station is based on Second information when transmitting in a multi-beam manner; the second information characterizing optimal transmit beam information when transmitted in a multi-beam based manner; using the second information to determine, in the reserved resource, required to report request information
  • the reporting resource is reported to the base station by using the determined reporting resource; the request information is used to request the base station to send the corresponding third information; and the base station receives the request information reported by the terminal; and is reported in the receiving process.
  • the second information is determined according to the reported resource occupied by the request information; the second information is used to represent the optimal transmit beam information when the multi-beam based method is sent; Determining, by the second information, a sending resource required to send the third information corresponding to the request information; using the determined sending resource to the The terminal transmits third information corresponding to the request information.
  • This embodiment provides an information transmission method, which is applied to a terminal. As shown in FIG. 14, the method includes the following steps:
  • S141 Receive first information that is sent by the base station in a multi-beam based manner.
  • the multi-beam based approach may be beam scanning.
  • the first information may include first system information and/or synchronization information.
  • the first system information may be referred to as basic system information, and may include: system bandwidth, random access configuration, and other basic system information required by the terminal in an idle state, and/or measurement and handover configuration required by the terminal in the connected state. Wait.
  • the synchronization information is information that needs to be received first before the terminal accesses the system, and is used for the terminal to acquire the system timing, and is received first than the basic system information. Without the synchronization information, the terminal cannot receive the basic system information.
  • the second information characterizes optimal transmit beam information when transmitted in a multi-beam based manner.
  • the second information includes at least one of the following information:
  • the first frequency resource relationship between at least two transmissions when the first information is transmitted is transmitted.
  • the terminal may acquire the second information.
  • the base station since the base station transmits the synchronization signal/basic system information based on the multi-beam mode, the positions of these signal transmissions are fixed.
  • the terminal obtains the ID of the optimal transmit beam which specifically includes:
  • the beam with the best received signal quality is taken as the optimal transmit beam; and the beam ID with the best received signal quality is used as the second information.
  • the terminal attempts to receive on multiple beams, and after correctly demodulating the signal, the terminal can obtain each beam information, that is, the beam ID.
  • the terminal can determine the beam ID of the optimal transmit beam, for example, the optimal transmit beam ID is beam 3.
  • the second implementation manner is that the terminal obtains the first timing relationship between the at least two transmissions when the first information transmission corresponding to the optimal transmission beam is obtained, which specifically includes:
  • the receiving timing with the best received signal quality is used as the first timing relationship between at least two transmissions when the first information of the optimal transmitting beam is transmitted; and the receiving timing with the best received signal quality is taken as the second information.
  • the terminal attempts to receive signals on multiple time domain resources. After correctly demodulating the signal, the terminal compares the received signal quality on the time domain resources, and the terminal can determine the reception of the best received signal. Timing, such as the second synchronization sequence timing/basic system information timing.
  • the third implementation manner is that the terminal obtains the timing relationship and the frequency resource corresponding to the optimal transmit beam, and specifically includes:
  • the terminal attempts to receive signals on multiple time and frequency domain resources respectively, and after correctly demodulating the signal, the terminal compares the received signal quality on the time and frequency resources, and the terminal can determine the best.
  • the reception timing and frequency position of the received signal such as the first frequency sequence position on the second synchronization sequence timing/base system information timing.
  • the quality of the received signal may be embodied by a received signal strength or a signal to noise ratio.
  • the terminal After the terminal obtains the optimal transmit beam information, it can be considered as subsequent on-demand system information and/or During the transmission of the machine access response, it is desirable to receive on this optimal transmit beam. Therefore, the terminal needs to report this information, so that the base station can obtain the following two information:
  • the terminal is requesting information
  • the terminal reports the optimal transmit beam information, that is, receives the on-demand system information and/or the random access response on an optimal transmit beam ID and/or a specific timing relationship and/or a specific frequency resource.
  • the terminal since the terminal has not yet accessed the communication system, the base station cannot schedule the terminal to transmit on a specific resource. Therefore, in order to report the above information, the terminal can report on the reserved resources.
  • the resource block corresponding to the ID is selected from the reserved resources as the reported resource according to the optimal transmit beam ID in the second information;
  • timing relationship corresponding to the sending of the first information is consistent with the timing relationship corresponding to the sending of the first information; or the timing relationship corresponding to the reporting of the request information is inconsistent with the timing relationship corresponding to the sending of the first information.
  • the reporting resource corresponds to the beam ID.
  • the terminal has determined that the optimal beam information is beam 3.
  • the reporting position corresponding to the beam 3 is the same as the transmitting position (the reporting timing is consistent with the timing relationship for transmitting the first information), that is, the second resource block from left to right in FIG. 16a.
  • the reporting position corresponding to the beam 3 is determined by its own serial number, as shown in FIG. 16b from the left to the third timing resource block (the timing relationship between the reporting timing and the sending of the first information is inconsistent, However, the reporting timing is also pre-agreed with the base station).
  • the reporting resources of the terminal can also be distinguished in the frequency domain, for example, the terminal can report in the same timing and frequency domain position as shown in FIG. 15c. It is also possible to determine the corresponding timing and frequency domain position according to certain criteria and its own serial number, but the criterion needs to be pre-agreed.
  • the terminal selects resources corresponding to the first timing relationship and/or the first frequency resource relationship from the reserved resources according to the first timing relationship and/or the first frequency resource relationship in the second information.
  • the block acts as the reporting resource.
  • the reporting resource that is, the receiving synchronization signal/basic system information in the reporting resource and the optimal beam information
  • a specific timing relationship first timing relationship
  • first frequency resource relationship first frequency resource relationship
  • Timing and / or frequency relationships correspond.
  • FIG. 16c through the step 131 shown in FIG. 13, the terminal has determined that the second timing position in the synchronization sequence timing is optimal, and the terminal also selects the resource when determining the reporting resource location. The second timing position in the group is reported.
  • the terminal has determined that the first frequency resource in the second sequence position in the synchronization sequence timing is optimal, and the terminal also determines when reporting the resource location.
  • the first frequency resource at the second timing position in the selected resource group is reported.
  • the reserved resource may be according to the optimal transmit beam information or the first letter.
  • the time/frequency domain resources sent by the message are pre-agreed.
  • the location of the reserved resource is a fixed location (does not change with any factor, is fixed), or the location of the reserved resource is a location determined by basic system information, or the reserved resource is The previous step receives the resources of the first information that differ by a certain length of time (as shown in FIG. 17).
  • the size of the reserved resource may be fixed, or the size of the reserved resource may be configured.
  • the size of the reserved resource may be configured according to some basic information such as system bandwidth. This is shown in Figures 18a and 18b.
  • the system bandwidth is small, and the reserved resources can occupy the same as the existing LTE system, occupying only 6 physical resource blocks.
  • the reserved resources can occupy more physical resource blocks.
  • the above is just an example, and the specific reserved resource size is not limited to the above data.
  • the request information is used to request the base station to send corresponding third information.
  • the request information may be a system information request and/or a random access request; correspondingly, the third information is second system information and/or a random access response; the second system information Different from the first system information.
  • the second system information may include system information required by the terminal only in the connected state after random access.
  • the third information is second system information; when the request information is a random access request, the third information is a random access response; When the request information is a system information request and a random access request, the third information is a second system information random access response.
  • the required system information includes the first system information and the second system information.
  • the terminal determines to report the resource, the terminal selects an appropriate reference signal sequence to report the system information request.
  • the reference signal sequence may correspond to the second information, such as may be scrambled with an optimal transmit beam ID; or according to the timing and/or frequency position of the optimal transmit beam, in a given set of reference signal sequences A sequence of corresponding locations is selected within the combination.
  • the terminal has completed the reporting process. After the solution provided by the embodiment of the present invention is used, since multiple terminals that select the same optimal transmit beam will use the same resource for reporting, as long as there is no system information at a certain beam/time/frequency position. Request for reporting, this part of the report resources can be saved.
  • the base station After receiving the request information, the base station sends the third information by using a beam corresponding to the second information indicated by the reporting resource.
  • the method may further include:
  • the transmission resource when the third information is transmitted by the beam corresponding to the second information may be consistent with the transmission resource used by the beam when the first information is transmitted, that is, the same reference symbol is used.
  • the embodiment of the invention further provides an information transmission method, which is applied to a base station, as shown in FIG. 19, the method includes:
  • S190 Send first information in a multi-beam based manner; the first information includes first system information and/or synchronization information.
  • the multi-beam based approach may be beam scanning.
  • the first information may include first system information and/or synchronization information.
  • the first system information may be referred to as basic system information, and may include: system bandwidth, random access configuration, and other basic system information required by the terminal in an idle state, and/or measurement and handover configuration required by the terminal in the connected state. Wait.
  • the synchronization information is information that needs to be received first before the terminal accesses the system, and is used for the terminal to acquire the system timing, and is received first than the basic system information. Without the synchronization information, the terminal cannot receive the basic system information.
  • the reporting request may be a system information request and/or a random access request.
  • the reported resource is determined according to a time domain and/or a frequency domain resource that is demodulated or whose signal quality is higher than a set threshold.
  • the base station scans on the reserved uplink resources to receive signals, if the signals are demodulated correctly on a certain time and frequency resource, or the signal is not demodulated on a certain time and frequency resource, but the detection
  • the received signal quality on the resource is good, and the request information can be considered to be corresponding to the timing/time-frequency resource, and the optimal transmit beam information reported by the terminal can be obtained through the timing/time-frequency resource.
  • the optimal transmit beam information includes at least one of the following information:
  • the first frequency resource relationship between at least two transmissions when the first information is transmitted is transmitted.
  • the resource block corresponding to the at least one of the following information determined by the base station may be obtained:
  • the second information characterizes optimal transmit beam information when transmitted in a multi-beam based manner.
  • the transmission resource when the third information is transmitted by the beam determined according to the second information may be consistent with the transmission resource used by the beam when the first information is transmitted, that is, the same reference symbol is used.
  • the base station obtains the two pieces of information required:
  • the terminal is requesting information
  • the optimal transmit beam information reported by the terminal that is, the terminal desires to receive on-demand system information and/or randomly respond to an optimal transmit beam ID and/or a specific timing relationship and/or a specific frequency resource.
  • the third information may be second system information and/or a random access response; the second system information is different from the first system information.
  • the second system information may include system information required by the terminal only in the connected state after random access.
  • the request information may be a system information request and/or a random access request; correspondingly, the third information is second system information and/or a random access response; the second system information and the first system The information is different.
  • the third information is second system information; when the request information is a random access request, the third information is a random access response; When the request information is a system information request and a random access request, the third information is a second system information random access response.
  • the required system information includes the first system information and the second system information.
  • an on-demand system information can be implemented by: similar to the existing LTE system, the time domain location of the first system information sent on demand is fixed, and the time domain location is also Corresponding to the optimal transmit beam ID and/or specific timing relationship and/or specific frequency resources, the terminal only needs to receive on the same ID and/or timing and/or frequency resources as the reported resource. On other resources that do not have system information requests, these resources Can be used to transfer other data.
  • the specific implementation process of sending the third information corresponding to the requesting system to the terminal by using the determined sending resource is not limited.
  • the same reported resource is selected to perform request information reporting.
  • the terminal receives the first information that is sent by the base station in a multi-beam based manner; the first information includes the first system information and/or the synchronization information; and the acquiring the base station is based on multiple beams.
  • the request information is reported to the base station by using the determined reporting resource; the request information is used to request the base station to send corresponding third information; and the base station receives the request information reported by the terminal; and the reporting request is obtained during the receiving process.
  • the second information is determined according to the reported resource occupied by the request information; the second information is used to represent the optimal transmit beam information when the multi-beam based method is sent; Information, determining a transmission resource required to send the third information corresponding to the request information; using the determined transmission resource to the The terminal sends the third information corresponding to the request information, and thus, the terminal uses the reserved resource report request information.
  • this part Reporting resources can be saved, and this can greatly save reporting resources.
  • the embodiment of the present invention provides a terminal. As shown in FIG. 20, the terminal includes:
  • the first receiving unit 201 is configured to receive first information that is sent by the base station in a multi-beam based manner; the first information includes at least first system information and/or synchronization information;
  • the first acquiring unit 202 is configured to acquire second information when the base station transmits in a multi-beam based manner; the second information represents optimal transmit beam information when transmitting in a multi-beam based manner;
  • the first determining unit 203 is configured to determine, by using the second information, a reporting resource required for reporting the request information in the reserved resource;
  • the reporting unit 204 is configured to report the request information to the base station by using the determined reporting resource, where the request information is used to request the base station to send the corresponding third information.
  • the first system information may be referred to as basic system information, and may include: system bandwidth, random access configuration, and other basic system information required by the terminal in an idle state, and/or measurement and handover configuration required by the terminal in the connected state. Wait.
  • the synchronization information is information that needs to be received first before the terminal accesses the system, and is used for the terminal to acquire the system timing, and is received first than the basic system information. Without the synchronization information, the terminal cannot receive the basic system information.
  • the second information includes at least one of the following information:
  • the first frequency resource relationship between at least two transmissions when the first information is transmitted is transmitted.
  • the first acquiring unit 202 may acquire the second information.
  • the base station since the base station transmits the synchronization signal/basic system information based on the multi-beam mode, the positions of these signal transmissions are fixed.
  • the first implementation is: the ID of the optimal transmit beam is obtained.
  • the first obtaining unit 202 is configured to:
  • the beam with the best received signal quality is taken as the optimal transmit beam; and the beam ID with the best received signal quality is used as the second information.
  • the terminal performs an attempt to receive on multiple beams, and after correctly demodulating the signal, the first acquiring unit 202 can obtain each beam information, that is, a beam ID. By comparing the received signal qualities of the individual beams, the first acquisition unit 202 can determine the beam ID of the optimal transmit beam, for example, the optimal transmit beam ID is beam 3.
  • the second implementation manner is that the first acquiring unit 202 obtains a first timing relationship between at least two transmissions when the first information transmission corresponding to the optimal transmission beam is obtained.
  • the first obtaining unit 202 is configured to:
  • the receiving timing with the best received signal quality is used as the first timing relationship between at least two transmissions when the first information of the optimal transmitting beam is transmitted; and the receiving timing with the best received signal quality is taken as the second information.
  • the first acquiring unit 202 compares the received signal quality on the time domain resources, and the first acquiring unit 82 is The reception timing of the best received signal can be judged, for example, the second synchronization sequence timing/basic system information timing.
  • a third implementation manner is that the first acquiring unit 202 obtains a timing relationship and a frequency resource corresponding to an optimal transmit beam.
  • the first obtaining unit 202 is configured to:
  • the first timing relationship between at least two transmissions when the reception timing with the best received signal quality is used as the first information of the optimal transmit beam; and the frequency position with the best received signal quality is used as the first frequency resource relationship,
  • the receiving timing and the frequency position at which the received signal quality is the best are taken as the second information.
  • the terminal attempts to receive signals on multiple time and frequency domain resources, and after correctly demodulating the signal, the first obtaining unit 202 compares the received signal quality on the time and frequency resources, and the terminal The first obtaining unit 202 can determine the reception timing and frequency position of the best received signal, for example, the first synchronization frequency sequence/the first frequency position on the basic system information timing.
  • the quality of the received signal may be embodied by a received signal strength or a signal to noise ratio.
  • the terminal After obtaining the optimal transmit beam information, it can be considered that the terminal expects to receive on the optimal transmit beam during the subsequent transmission of the on-demand system information and/or the random access response. Therefore, the terminal needs to report this information, so that the base station can obtain the following two information:
  • the terminal is requesting information
  • the terminal reports the optimal transmit beam information, that is, receives the on-demand system information and/or the random access response on an optimal transmit beam ID and/or a specific timing relationship and/or a specific frequency resource.
  • the terminal since the terminal has not yet accessed the communication system, the base station cannot schedule the terminal to transmit on a specific resource. Therefore, in order to report the above information, the terminal can report on the reserved resources.
  • the first determining unit 203 is specifically configured to:
  • timing relationship corresponding to the sending of the first information is consistent with the timing relationship corresponding to the sending of the first information; or the timing relationship corresponding to the reporting of the request information is inconsistent with the timing relationship corresponding to the sending of the first information.
  • the reporting resource corresponds to the beam ID.
  • the first acquiring unit 202 has determined that the optimal beam information is the beam 3.
  • the reporting position corresponding to beam 3 is the same as the transmitting position (the reporting timing is consistent with the timing relationship for transmitting the first information), that is, the second resource block from left to right in FIG. 16a.
  • the reporting position corresponding to the beam 3 is consistent by its own index, that is, the third timing resource block from left to right in FIG. 16b (the timing relationship between the reporting timing and the sending of the first information is inconsistent, However, the reporting timing is also pre-agreed with the base station).
  • the reporting resources of the terminal can also be distinguished in the frequency domain, for example, the terminal can report in the same timing and frequency domain position as shown in FIG. 15c. It is also possible to determine the corresponding timing and frequency domain position according to certain criteria and its own serial number, but the criterion needs to be pre-agreed.
  • the first determining unit 203 is specifically configured to:
  • the reporting resource that is, the receiving synchronization signal/basic system information in the reporting resource and the optimal beam information
  • the first timing relationship is determined according to a specific timing relationship (first timing relationship) and/or a specific frequency resource relationship (first frequency resource relationship). Timing and / or frequency relationships correspond.
  • first timing relationship a specific timing relationship
  • first frequency resource relationship first frequency resource relationship
  • Timing and / or frequency relationships correspond.
  • FIG. 16c by the step 131 shown in FIG. 13, the first obtaining unit 202 has determined that the second timing position in the synchronization sequence timing is optimal, then the first determining unit 203 is When the location of the resource is determined, the second timing position in the resource group is also selected for reporting.
  • FIG. 16d by the step 131 shown in FIG.
  • the first acquiring unit 202 has determined that the first frequency resource in the second timing position in the synchronization sequence timing is optimal, then the first When determining the location of the resource, the determining unit 203 also selects the first frequency resource at the second timing position in the resource group for reporting.
  • the reserved resource may be pre-defined according to the optimal transmit beam information or the time/frequency domain resource sent by the first information.
  • the location of the reserved resource is a fixed location (does not change with any factor, is fixed), or the location of the reserved resource is a location determined by basic system information, or the reserved resource is The previous step receives the resources of the first information that differ by a certain length of time (as shown in FIG. 17).
  • the size of the reserved resource may be fixed, or the size of the reserved resource may be configured.
  • the Cai Xiao of the reserved resource may be configured according to some basic information such as system bandwidth. This is shown in Figures 18a and 18b.
  • the system bandwidth is small, and the reserved resources can occupy the same as the existing LTE system, occupying only 6 physical resource blocks.
  • the reserved resources can occupy more physical resource blocks.
  • the above is just an example, and the specific reserved resource size is not limited to the above data.
  • the second system information may include system information required by the terminal only in the connected state after random access.
  • the third information is second system information; when the request information is a random access request, the third information is a random access response; When the request information is a system information request and a random access request, the third information is a second system information random access response.
  • the required system information includes the first system information and the second system information.
  • the terminal After determining that the resource is reported, the terminal selects an appropriate reference signal sequence to perform The system information request is reported.
  • the reference signal sequence may correspond to the second information, such as may be scrambled with an optimal transmit beam ID; or according to the timing and/or frequency position of the optimal transmit beam, in a given set of reference signal sequences A sequence of corresponding locations is selected within the combination.
  • the terminal has completed the reporting process. After the solution provided by the embodiment of the present invention is used, since multiple terminals that select the same optimal transmit beam will use the same resource for reporting, as long as there is no system information at a certain beam/time/frequency position. Request for reporting, this part of the report resources can be saved.
  • the base station After receiving the request information, the base station sends the third information by using a beam corresponding to the second information indicated by the reporting resource.
  • the first receiving unit 201 is further configured to receive the third information on a resource corresponding to the second information.
  • the transmission resource when the third information is transmitted by the beam corresponding to the second information may be consistent with the transmission resource used by the beam when the first information is transmitted, that is, the same reference symbol is used.
  • the first receiving unit 201 can be implemented by a transceiver in the terminal, and the first obtaining unit 202 and the first determining unit 203 can be processed by a processor in the terminal, such as a central processing unit (CPU), a microprocessor ( The MCU (Micro Control Unit), a digital signal processor (DSP), or a Field-Programmable Gate Array (FPGA) is implemented; the reporting unit 204 can be implemented by a processor in the terminal in combination with the transceiver.
  • the terminal further includes a memory, a memory, and the processor acquires an instruction from the memory (which can be understood as a computer program) and implements its functions in combination with hardware.
  • an embodiment of the present invention further provides a base station.
  • the base station includes:
  • the first sending unit 210 is configured to send the first information in a multi-beam based manner; the first information includes first system information and/or synchronization information;
  • the second receiving unit 211 is configured to receive the request information reported by the terminal;
  • the second obtaining unit 212 is configured to obtain, in the receiving process, the reporting resource occupied by reporting the request information
  • the second determining unit 213 is configured to determine the second information according to the reporting resource occupied by the request information, where the second information represents the optimal transmit beam information when the multi-beam based transmission is performed; Determining the second information; the second information characterizing the optimal transmit beam information when transmitting in the multi-beam based manner; determining, according to the second information, the third information required to send the request information Send resources;
  • the second sending unit 214 is configured to send the third information corresponding to the request information to the terminal by using the determined sending resource.
  • the multi-beam based approach may be beam scanning.
  • the first information may include first system information and/or synchronization information.
  • the first system information may be referred to as basic system information, and may include: system bandwidth, random access configuration, and other basic system information required by the terminal in an idle state, and/or measurement and handover configuration required by the terminal in the connected state. Wait.
  • the synchronization information is information that needs to be received first before the terminal accesses the system, and is used for the terminal to acquire the system timing, and is received first than the basic system information. Without the synchronization information, the terminal cannot receive the basic system information.
  • the second acquiring unit 212 is specifically configured to:
  • the reported resource is determined according to a time domain and/or a frequency domain resource that is demodulated or whose signal quality is higher than a set threshold.
  • the second receiving unit 211 scans on the reserved uplink resource to receive the signal, if the signal is demodulated correctly on a certain time and frequency resource, or there is no solution on a certain time and frequency resource.
  • the signal is sent out, but the quality of the received signal on the resource is detected to be good, and the second obtaining unit 212 can consider that the request information is corresponding to the timing/time-frequency resource, and can be obtained by using the timing/time-frequency resource.
  • the optimal transmit beam information includes at least one of the following information:
  • the first frequency resource relationship of the optimal transmit beam between at least two transmissions when the first information is transmitted is transmitted.
  • the resource block corresponding to the at least one of the following information determined by the obtaining unit 212 is obtained:
  • the transmission resource when the third information is transmitted by the beam determined according to the second information may be consistent with the transmission resource used by the beam when the first information is transmitted, that is, the same reference symbol is used.
  • the base station After the second obtaining unit 212 determines the reporting resource, the base station obtains two pieces of information required:
  • the terminal is requesting information
  • the optimal transmit beam information reported by the terminal that is, the terminal expects an optimal transmit beam ID. And/or receiving on-demand system information and/or randomly responding on a particular timing relationship and/or a particular frequency resource.
  • the request information may be a system information request and/or a random access request; correspondingly, the third information is second system information and/or a random access response; the second system information and the first system The information is different.
  • the second system information may include system information required by the terminal only in the connected state after random access.
  • the third information is second system information; when the request information is a random access request, the third information is a random access response; When the request information is a system information request and a random access request, the third information is a second system information random access response.
  • the required system information includes the first system information and the second system information.
  • the required system information includes the first system information and the second system information.
  • an on-demand system information can be implemented by: similar to the existing LTE system, the time domain location of the first system information sent on demand is fixed, and the time domain location is also Corresponding to the optimal transmit beam ID and/or specific timing relationship and/or specific frequency resources, the terminal only needs to receive on the same ID and/or timing and/or frequency resources as the reported resource. These resources can be used to transfer other data on other resources that do not have system information requests.
  • the specific implementation process of sending system information corresponding to the request information to the terminal by using the determined sending resource is not limited.
  • the same reported resource is selected to perform system information request report.
  • the second receiving unit 211 can be implemented by a transceiver of the base station; the second obtaining unit 212 and the second determining unit 213 can be implemented by a processor in the base station, such as a CPU, an MCU, a DSP, an FPGA, or the like;
  • the first sending unit 210 and the second sending unit 214 can be implemented by a CPU, an MCU, a DSP or an FPGA in a base station in combination with a transceiver.
  • the base station further includes a memory, a memory, which acquires an instruction from the memory (which can be understood as a computer program) and implements its functions in combination with hardware.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention may employ computer usable storage media (including but not included in one or more of the computer usable program code. It is limited to the form of a computer program product implemented on a disk storage, a CD-ROM, an optical storage, or the like.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • an embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method of the embodiment of the present invention are implemented.
  • the network side sends the system information to the terminal by using multiple beams
  • the transmitted system information carries the configuration information of the time-frequency resource available for the terminal to send the random access information
  • the terminal side uses the multiple beam to receive the network side to send the information.
  • the system information can be determined by the terminal to obtain the optimal terminal side receiving beam information and the optimal network side transmitting beam information. Accordingly, the terminal can determine the terminal side optimal receiving beam information, configuration information, and network side according to the determined terminal side.
  • the bundle information sends the random access information to the network side, and does not need to send the random access information to the network side on multiple beams, thereby saving the processing resource overhead of the terminal and reducing the access delay.
  • the random access request sent by the terminal to the network side carries the network-side optimal transmit beam indication information, so that the network side can determine the optimal transmit beam on the network side, and the subsequent network side sends the random access response to the terminal.
  • the optimal transmission beam can be transmitted without using the sweeping beam mode, thereby saving the processing resource overhead of the network side and reducing the random access delay.
  • the terminal receives the first information that is sent by the base station in a multi-beam based manner; the first information includes the first system information and/or the synchronization information; and the acquiring the base station is sent in a multi-beam based manner.
  • Second information represents optimal transmit beam information when transmitted in a multi-beam based manner; using the second information, determining, by using the second information, the reporting resource required for reporting the request information; utilizing Determining the reported resource to report the request information to the base station; the request information is used to request the base station to send the corresponding third information; and the base station receives the request information reported by the terminal; and obtains the report information in the receiving process.
  • the second reported information is determined according to the reported resource occupied by the request information; the second information represents the optimal transmit beam information when the multi-beam based method is sent; according to the second information, Determining a transmission resource required to send the third information corresponding to the request information; sending the determined transmission resource to the terminal
  • the third information corresponding to the request information realizes that the terminal utilizes the reserved resource report request information.
  • the solution provided by the embodiment of the present invention since multiple terminals that select the same optimal transmit beam will use the same resource for reporting, as long as there is no request information request report on a certain beam/time/frequency position, this Some of the reported resources can be saved, so that the reporting resources can be greatly saved.

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

Abstract

L'invention concerne un procédé d'accès aléatoire, un procédé et un appareil de transmission d'informations, un dispositif associé, et un support d'informations lisible par ordinateur. Le procédé d'accès aléatoire, lequel est mis en œuvre du côté d'un terminal, consiste : à recevoir respectivement, au moyen de différents faisceaux de réception dans N directions, des informations de système transmises par un côté de réseau au moyen de faisceaux de transmission dans M directions différentes, les informations de système portant des informations de configuration d'une ressource de fréquence de temps qui peut servir à transmettre des informations d'accès aléatoire, N et M étant des nombres naturels; à déterminer respectivement des informations concernant un faisceau optimal de réception du côté d'un terminal et des informations concernant un faisceau optimal de transmission du côté du réseau; et à transmettre des informations d'accès aléatoire au côté du réseau en fonction des informations de configuration et des informations déterminées concernant le faisceau optimal de réception du côté du terminal et des informations déterminées concernant le faisceau optimal de transmission du côté du réseau.
PCT/CN2017/084235 2016-05-13 2017-05-12 Procédé d'accès aléatoire, procédé et appareil de transmission d'informations, dispositif, et support d'informations WO2017194014A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201610320307.9A CN106900075A (zh) 2016-05-13 2016-05-13 一种随机接入方法、装置、相关设备和系统
CN201610320096.9 2016-05-13
CN201610320096.9A CN106900074B (zh) 2016-05-13 2016-05-13 一种随机接入方法、装置、相关设备和系统
CN201610320307.9 2016-05-13
CN201610666116.8A CN106888507B (zh) 2016-08-12 2016-08-12 信息传输方法、终端及基站
CN201610666116.8 2016-08-12

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WO2017194014A1 true WO2017194014A1 (fr) 2017-11-16

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TWI779170B (zh) * 2018-02-27 2022-10-01 美商高通公司 針對活躍波束的波束報告

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CN104734760A (zh) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 一种实现下行波束索引处理的方法、装置和系统
US20150382268A1 (en) * 2014-06-30 2015-12-31 Qualcomm Incorporated Handover with integrated antenna beam training in wireless networks
CN105530685A (zh) * 2014-10-24 2016-04-27 中兴通讯股份有限公司 消息发送接收方法、发送接收装置、基站及终端

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CN103891161A (zh) * 2011-10-19 2014-06-25 三星电子株式会社 无线通信系统中的上行链路控制方法和装置
CN104734760A (zh) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 一种实现下行波束索引处理的方法、装置和系统
US20150382268A1 (en) * 2014-06-30 2015-12-31 Qualcomm Incorporated Handover with integrated antenna beam training in wireless networks
CN105530685A (zh) * 2014-10-24 2016-04-27 中兴通讯股份有限公司 消息发送接收方法、发送接收装置、基站及终端

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TWI779170B (zh) * 2018-02-27 2022-10-01 美商高通公司 針對活躍波束的波束報告

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