WO2014113925A1 - Procédé et appareil d'accès aléatoire compétitif - Google Patents

Procédé et appareil d'accès aléatoire compétitif Download PDF

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Publication number
WO2014113925A1
WO2014113925A1 PCT/CN2013/070851 CN2013070851W WO2014113925A1 WO 2014113925 A1 WO2014113925 A1 WO 2014113925A1 CN 2013070851 W CN2013070851 W CN 2013070851W WO 2014113925 A1 WO2014113925 A1 WO 2014113925A1
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WO
WIPO (PCT)
Prior art keywords
random access
configuration
resource
domain resource
resources
Prior art date
Application number
PCT/CN2013/070851
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English (en)
Chinese (zh)
Inventor
栗忠峰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/070851 priority Critical patent/WO2014113925A1/fr
Priority to CN201380001029.5A priority patent/CN104186020B/zh
Publication of WO2014113925A1 publication Critical patent/WO2014113925A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for competitive random access. Background technique
  • UL Upl ink
  • PUCCH Physical Control Channel
  • SR Switchuling Reques t
  • RRC connection re-establishment or handover within LTE
  • the device can randomly access the network through a competitive access method or a non-contentive access method, so as to quickly restore the data transmission of the user plane.
  • the contention of the random access means that the UE selects a preamble resource from a set of available random access resources (such as preamble resources) allocated by the network, and sends the selected preamble resource to the network side for randomization.
  • a preamble resource such as preamble resources allocated by the network
  • multiple UEs may select the same preamble resource to access, that is, random access collision occurs, resulting in unsuccessful random access.
  • the non-contention random access refers to the random access performed by the UE by using one preamble resource explicitly allocated to the UE by the network side, and the UE uses the preamble resource allocated by the network side to perform random access, so Random access collisions do not occur during random access.
  • the related configuration information of the UE accessing the network is broadcast by the system message, and the UE selects a group of information to initiate a random access request message in the related configuration information of the system message broadcast,
  • the disadvantage of the method is that the random access capacity is limited, and the different UEs send the same preamble information on the same time-frequency resource, that is, the preamble information collides, and the random access may be delayed.
  • the embodiment of the invention provides a method and a device for competing random access, which can improve the random access channel capacity and reduce the time delay for the user equipment to perform random access.
  • an embodiment of the present invention provides a method for competitive random access, where the method includes:
  • the user equipment receives the dedicated signaling and the first system message sent by the base station, where the dedicated signaling carries the first random access configuration resource, and the first system message carries the second random access configuration resource;
  • the user equipment sends a random access message carrying the random access preamble resource to the base station to perform competitive random access according to the time domain resource and the frequency domain resource.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration,
  • the carrier indicates the configuration information
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration;
  • the first code domain resource configuration and the first time domain resource configuration are different from the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration, respectively.
  • the first time domain resource configuration includes first subframe configuration information, and the first preamble format At least one of the configuration information: the first code domain resource configuration includes at least one of a first root sequence configuration information and a first zero correlation domain offset configuration information; the first frequency domain resource configuration includes a first Frequency resource configuration information; the second time domain resource configuration includes second subframe configuration information, second preamble format configuration information; the second code domain resource configuration includes second root sequence configuration information, Offset configuration information; the second frequency domain resource configuration includes second frequency resource configuration information.
  • the dedicated signaling is a radio resource control message, or media access control Signaling message, or downlink control message.
  • the method further includes: determining random access according to the configuration of the reference signal The transmit power of the preamble; the sending the random access message to the base station includes: sending the random access message to the base station according to the transmit power.
  • the method further includes: determining, according to the carrier indication configuration information, The carrier that carries the random access preamble; the sending the random access message to the base station is specifically: sending the random access message to the base station by using the carrier.
  • the embodiment of the present invention further provides a method for competitive random access, where the method includes:
  • the user equipment receives the second system message sent by the base station, where the second system message carries the first Three random access configuration resources;
  • the user equipment acquires, according to the third random access configuration resource and the pre-configured random access configuration resource, a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access;
  • the user equipment sends a random access message carrying the random access preamble resource to the base station to perform competitive random access according to the time domain resource and the frequency domain resource.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; At least one of a frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration, and a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource carried in the first system message
  • the corresponding resource configuration in the configuration is different.
  • the pre-configured random access configuration resource is empty, and the user equipment is configured according to the third random Accessing the configuration resource and the pre-configured random access configuration resource, and acquiring the random access preamble resource, the time domain resource, and the frequency domain resource required for performing the competitive random access, including: according to the third random access configuration
  • the resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the pre-configured random access configuration resource includes a frequency domain resource configuration, and a code domain. At least one of resource configuration and time domain resource configuration; the user equipment acquires random access required for performing competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the preamble resource, the time domain resource, and the frequency domain resource are included, and: acquiring, according to the pre-configured random access configuration resource, the random access configuration resource to obtain a random random access Access preamble resources, time domain resources, and frequency domain resources.
  • the third random access configuration resource further includes: a reference signal Configuration, carrier indication configuration information.
  • the method further includes: configuring, according to the reference signal Determining a transmit power of the random access preamble; the sending the random access message to the base station includes: sending the random access message to the base station according to the transmit power.
  • the method further includes: configuring, according to the carrier indication The information is used to determine a carrier that is used to carry the random access preamble.
  • the sending the random access message to the base station is specifically: sending, by using the carrier, the random access message to the base station.
  • an embodiment of the present invention provides a method for competitive random access, where the method includes:
  • the random access configuration resource includes a first random access configuration resource and a second random access configuration resource
  • the dedicated signaling is a radio resource control message, or a medium access control signaling message, or a downlink control message.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and a carrier indication configuration information;
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, and a second code domain resource configuration Second time domain resource configuration.
  • the carrier indication configuration information is used to indicate that the terminal carries the carrier information of the random access preamble
  • the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of a random access preamble resource.
  • the sending, The first system message is specifically: sending the random access configuration resource to the base station to which the terminal belongs, where the base station is configured to generate the first signaling and the first system message according to the random access configuration resource. And sending the first signaling and the first system message to the terminal; or sending the random access configuration resource to the network management center 0AM, where the 0AM is sent to the base station to which the terminal belongs.
  • the random access configuration resource is used by the base station to generate the first signaling and the first system message according to the random access configuration resource, and the first signaling and the first system A message is sent to the terminal.
  • the embodiment of the present invention further provides a method for competitive random access, where the method includes:
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; At least one of a frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration, and a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource carried in the first system message
  • the corresponding resource configuration in the configuration is different.
  • the third random access configuration resource further includes reference signal configuration, carrier indication configuration information, and the carrier
  • the indication configuration information is used to indicate that the terminal carries the carrier information of the random access preamble; the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of the random access preamble resource.
  • the method further includes: receiving the And determining, by the terminal, the random access preamble resource required for performing the competitive random access according to the third random access configuration resource and the pre-configured random access access configuration resource; determining the random access preamble Whether the resource has a random access resource collision, and sends a random access response message to the terminal.
  • the sending, by the terminal, the second system message is: The base station to which the terminal belongs sends the random access configuration resource, and the base station generates the second system message according to the random access configuration resource, and sends the second system message to the terminal; Or sending the random access configuration resource to the network management center 0AM, where the MME sends the random access configuration resource to the base station to which the terminal belongs, where the base station generates the resource according to the random access configuration resource.
  • the second system message, and sending the second system message to the terminal is: The base station to which the terminal belongs sends the random access configuration resource, and the base station generates the second system message according to the random access configuration resource, and sends the second system message to the terminal; Or sending the random access configuration resource to the network management center 0AM, where the MME sends the random access configuration resource to the base station to which the terminal belongs, where the base station generates the resource according to the random access configuration resource.
  • the second system message, and sending the second system message to the terminal is: The base station to which the terminal belongs send
  • an embodiment of the present invention provides a device for competing random access, where the device Includes:
  • a receiving unit configured to receive the dedicated signaling and the first system message sent by the base station, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random access configuration resource And transmitting the dedicated signaling and the first system message to the acquiring unit, the acquiring unit, configured to receive the dedicated signaling and the first system message sent by the receiving unit, according to the first Obtaining, by using at least one of a random access configuration resource and the second random access configuration resource, a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access, and a Transmitting a random access preamble resource, the time domain resource, and the frequency domain resource to a sending unit;
  • a sending unit configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the acquiring unit, according to the time domain resource and the frequency domain resource, to the base station A random access message carrying the random access preamble resource is sent for competitive random access.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration,
  • the carrier indicates the configuration information
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration;
  • the first code domain resource configuration and the first time domain resource configuration are different from the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration, respectively.
  • the acquiring unit is specifically configured to: obtain the random connection according to the first random access configuration resource The preamble resource, the time domain resource, and the frequency domain resource; if the random access preamble resource, the time domain resource, and the frequency domain resource cannot be obtained according to the first random access configuration resource
  • the acquiring unit is specifically configured to: obtain the random connection according to the first random access configuration resource The preamble resource, the time domain resource, and the frequency domain resource; if the random access preamble resource, the time domain resource, and the frequency domain resource cannot be obtained according to the first random access configuration resource
  • the acquiring unit is specifically configured to: obtain the random connection according to the first random access configuration resource The preamble resource, the time domain resource, and the frequency domain resource; if the random access preamble resource, the time domain resource, and the frequency domain resource cannot be obtained according to the first random access configuration resource
  • the second random access configuration resource Obtaining, before the random access, the user equipment according to the second random access configuration resource At least one of a pilot resource, the time domain resource, and
  • the first time domain resource configuration includes first subframe configuration information, a first preamble At least one of the code format configuration information; the first code domain resource configuration includes at least one of a first root sequence configuration information and a first zero correlation domain offset configuration information; the first frequency domain resource configuration includes The first time domain resource configuration includes the second subframe configuration information, the second preamble format configuration information, and the second code domain resource configuration includes the second sequence configuration information, the second Related domain offset configuration information; the second frequency domain resource configuration includes second frequency resource configuration information.
  • the dedicated signaling is a radio resource control message, or a medium access control Signaling message, or downlink control message.
  • the device further includes: a first determining unit, configured to determine, according to the reference signal configuration, a random connection Transmit power of the preamble; the sending unit is specifically configured to: send the random access message to the base station according to the transmit power.
  • the apparatus further includes: a second determining unit, configured to determine, according to the carrier indication configuration information, The carrier that carries the random access preamble; the sending unit is specifically configured to: send the random access message to the base station by using the carrier.
  • an embodiment of the present invention provides a device for competing random access, where the device includes:
  • a receiving unit configured to receive a second system message sent by the base station, where the second system message carries a third random access configuration resource, and the third random access configuration resource is transmitted to the acquiring unit; Receiving, by the receiving unit, the third random access configuration resource, according to the third random access configuration resource and the pre-configured random access configuration resource, acquiring Random access preamble resources, time domain resources, and frequency domain resources required for competitive random access, and transmitting the random access preamble resource, the time domain resource, and the frequency domain resource to a sending unit a sending unit, configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the acquiring unit, according to the time domain resource and the frequency domain resource, to The base station sends a random access message carrying the random access preamble resource to perform competitive random access.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, and a third code domain resource. Configuration, third time domain resource configuration; at least one of the third frequency domain resource configuration, the third code domain resource configuration, and the third time domain resource configuration, and the second frequency domain resource configuration carried in the first system message
  • the corresponding resource configuration in the second code domain resource configuration and the second time domain resource configuration is different.
  • the pre-configured random access configuration resource is empty, and the acquiring unit is specifically configured to:
  • the third random access configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the pre-configured random access configuration resource includes a frequency domain resource configuration, and a code domain. At least one of a resource configuration and a time domain resource configuration; the acquiring unit is specifically configured to: acquire, according to the pre-configured random access configuration resource, the third random access configuration resource, to obtain a competitive randomization Access random access preamble resources, time domain resources, and frequency domain resources.
  • the third random access configuration resource further includes: , the carrier indicates configuration information.
  • the apparatus further includes: a first determining unit, configured to determine, according to the reference signal configuration, a random access preamble Transmit power; the sending unit is specifically configured to: according to the transmit power, to the The base station transmits the random access message.
  • the device further includes: a second determining unit, configured to determine, according to the carrier indication configuration information, The carrier that randomly accesses the preamble; the sending unit is specifically configured to: send the random access message to the base station by using the carrier.
  • an embodiment of the present invention provides a competitive random access device, where the device includes:
  • An acquiring unit configured to acquire a random access configuration resource used by the terminal for performing a random random access, where the random access configuration resource includes a first random access configuration resource and a second random access configuration resource, where Transmitting, by the first random access configuration resource and the second random access configuration resource, to the sending unit;
  • a sending unit configured to receive the first random access configuration resource and the second random access configuration resource that are sent by the acquiring unit, and send the dedicated signaling and the first system message to the terminal, where the special message is sent
  • the first random access configuration resource is carried in the command, where the first system message carries the second random access configuration resource, and the terminal uses the first random access configuration resource and the At least one of the second random access configuration resources acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing the competitive random access.
  • the dedicated signaling is a radio resource control message, or a medium access control signaling message, or a downlink control message.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and a carrier indication configuration information;
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, and a second code domain resource configuration Second time domain resource configuration.
  • the carrier indication configuration information is used to indicate that the terminal carries the carrier signal of the random access preamble
  • the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of a random access preamble resource.
  • the apparatus further includes: a receiving unit, a determining unit, and the receiving a unit, configured to receive a random access preamble required by the terminal to perform competitive random access according to at least one of the first random access configuration resource and the second random access configuration resource
  • the determining unit is configured to determine whether a random access resource collision occurs in the random access preamble resource, and send a random access response message to the terminal.
  • the sending unit is specifically configured to: The associated base station sends the random access configuration resource, and the base station generates the first signaling and the first system message according to the random access configuration resource, and the first signaling and the Sending the first system message to the terminal; or sending the random access configuration resource to the network management center 0AM, where the 0AM sends the random access configuration resource to the base station to which the terminal belongs, The base station generates the first signaling and the first system message according to the random access configuration resource, and sends the first signaling and the first system message to the terminal.
  • the embodiment of the present invention further provides a device for competing random access, where the device further includes: an acquiring unit, configured to acquire a random access configuration resource used by the terminal for performing competitive random access
  • the random access configuration resource includes a third random access configuration resource, and the third random access configuration resource is transmitted to the sending unit;
  • a sending unit configured to receive the third random access configuration resource that is sent by the acquiring unit, and send a second system message to the terminal, where the second system message carries the third random access configuration resource And obtaining, by the terminal, random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the third random access configuration resource includes at least the following a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; at least one of the third frequency domain resource configuration, the third code domain resource configuration, and the third time domain resource configuration.
  • the resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third random access configuration resource further includes reference signal configuration, carrier indication configuration information, and the carrier
  • the indication configuration information is used to indicate that the terminal carries the carrier information of the random access preamble; the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of the random access preamble resource.
  • the apparatus further includes: a receiving unit, a determining unit, and the receiving unit, Receiving a random access preamble resource required for the competitive random access obtained by the terminal according to the third random access configuration resource and the pre-configured random access configuration resource; the determining unit, And determining, by the random access preamble resource, whether a random access resource collision occurs, and sending a random access response message to the terminal.
  • the sending unit is specifically configured to: Transmitting the random access configuration resource, where the base station generates the second system message according to the random access configuration resource, and sends the second system message to the terminal; or to the network management center 0AM Sending the random access configuration resource, where the 0AM sends the random access configuration resource to the base station to which the terminal belongs, where the base station generates the second system message according to the random access configuration resource. And transmitting the second system message to the terminal.
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: a receiver, configured to receive a dedicated signaling sent by a base station, and a first system message, where the dedicated signaling carries a first random Accessing a configuration resource, where the first system message carries a second random access configuration resource, and the first random access configuration resource is transmitted to the processor; a processor, configured to acquire, according to at least one of the first random access configuration resource and the second random access configuration resource, a random access preamble resource required for performing a competitive random access And the domain resource and the frequency domain resource, and the random access preamble resource, the time domain resource, and the frequency domain resource are transmitted to the transmitter;
  • a transmitter configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the processor, to the base station according to the time domain resource and the frequency domain resource A random access message carrying the random access preamble resource is sent for competitive random access.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration,
  • the carrier indicates the configuration information
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration;
  • the first code domain resource configuration and the first time domain resource configuration are different from the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration, respectively.
  • the processor is specifically configured to: obtain the foregoing according to the first random access configuration resource Randomly accessing a preamble resource, the time domain resource, and the frequency domain resource; if the random access preamble resource, the time domain resource, and the frequency are not acquired according to the first random access configuration resource At least one of the domain resources, or the network signaling, according to the second random access configuration resource, acquiring at least one of the random access preamble resource, the time domain resource, and the frequency domain resource And acquiring, by the user equipment, at least one of the random access preamble resource, the time domain resource, and the frequency domain resource according to the second random access configuration resource.
  • the first time domain resource configuration includes first subframe configuration information, and the first preamble format At least one of the configuration information: the first code domain resource configuration includes at least one of a first root sequence configuration information and a first zero correlation domain offset configuration information; the first frequency domain resource configuration includes a first Frequency resource configuration information; the second time domain resource configuration includes second subframe configuration information, Second preamble format configuration information; the second code domain resource configuration includes a second root sequence configuration information, a twentieth related domain offset configuration information; and the second frequency domain resource configuration includes second frequency resource configuration information.
  • the dedicated signaling is a radio resource control message, or media access control Signaling message, or downlink control message.
  • the processor is further configured to: determine, according to the reference signal configuration, a transmit power of a random access preamble;
  • the transmitter is specifically configured to: send the random access message to the base station according to the transmit power.
  • the processor is further configured to: determine, according to the carrier indication configuration information, to carry the random access preamble
  • the transmitter is specifically configured to: send the random access message to the base station by using the carrier.
  • the embodiment of the present invention further provides a user equipment, where the user equipment includes: a receiver, configured to receive a second system message sent by the base station, where the second system message carries a third random access Configuring a resource, the third random access configuration resource is transmitted to the processor, and the processor is configured to receive the third random access configuration resource that is sent by the receiver, and configure the resource according to the third random access And obtaining, by using a pre-configured random access configuration resource, a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access, and the random access preamble resource, the time domain Transmitting the resource and the frequency domain resource to a transmitter;
  • a transmitter configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the processor, to the base station according to the time domain resource and the frequency domain resource A random access message carrying the random access preamble resource is sent for competitive random access.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; At least one of the third frequency domain resource configuration, the third code domain resource configuration, and the third time domain resource configuration, and the second frequency domain resource configuration carried in the first system message, the second code domain resource configuration, and the second time domain
  • the corresponding resource configuration in the resource configuration is different.
  • the pre-configured random access configuration resource is empty, and the processor is specifically configured to:
  • the third random access configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access
  • the pre-configured random access configuration resource includes a frequency domain resource configuration, and a code domain. At least one of a resource configuration and a time domain resource configuration; the processor is specifically configured to: acquire, according to the pre-configured random access configuration resource, the third random access configuration resource, to obtain a competitive randomization Access random access preamble resources, time domain resources, and frequency domain resources.
  • the third random access configuration resource further includes: , the carrier indicates configuration information.
  • the processor is further configured to: determine, according to the reference signal configuration, a transmission of a random access preamble
  • the transmitter is specifically configured to: send the random access message to the base station according to the transmit power.
  • the processor is further configured to: determine, according to the carrier indication configuration information, to carry the random The carrier that accesses the preamble; the transmitter is specifically configured to: send the random access message to the base station by using the carrier.
  • an embodiment of the present invention provides a base station, where the base station includes:
  • a processor configured to acquire a random access configuration resource used by the terminal for performing a random random access, where the random access configuration resource includes a first random access configuration resource and a second random access configuration resource Source, transmitting the first random access configuration resource and the second random access configuration resource to a transmitter;
  • a transmitter configured to receive the first random access configuration resource and the second random access configuration resource that are sent by the processor, and send the dedicated signaling and the first system message to the terminal, where the dedicated message is sent
  • the first random access configuration resource is carried in the command, where the first system message carries the second random access configuration resource, and the terminal uses the first random access configuration resource and the At least one of the second random access configuration resources acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing the competitive random access.
  • the dedicated signaling is a radio resource control message, or a medium access control signaling message, or a downlink control message.
  • the first random access configuration resource includes at least one of the following: The first code domain resource configuration, the first time domain resource configuration, the reference signal configuration, and the carrier indication configuration information; the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, and a second code domain Resource configuration, second time domain resource configuration.
  • the carrier indication configuration information is used to indicate that the terminal carries the random access preamble Carrier information; the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of a random access preamble resource.
  • the base station further includes a receiver; And receiving, by the terminal, a random access preamble resource required for performing a competitive random access according to at least one of the first random access configuration resource and the second random access configuration resource;
  • the processor is further configured to determine whether a random access resource collision occurs in the random access preamble resource, and send a random access response message to the terminal.
  • the transmitter is specifically configured to: send the random access configuration resource to a base station to which the terminal belongs, where the base station is configured according to the random access Generating the first signaling and the first system message, and transmitting the first signaling and the first system message to the terminal; or sending the random access configuration to a network management center 0AM a resource, where the 0AM is used to send the random access configuration resource to a base station to which the terminal belongs, where the base station generates the first signaling and the first system message according to the random access configuration resource. And transmitting the first signaling and the first system message to the terminal.
  • the embodiment of the present invention further provides a base station, where the base station includes: a processor, configured to acquire a random access configuration resource used by the terminal for performing a competitive random access, where the random access configuration The resource includes a third random access configuration resource, and the third random access configuration resource is transmitted to the transmitter;
  • a transmitter configured to receive the third random access configuration resource that is sent by the processor, to send a second system message to the terminal, where the second system message carries the third random access configuration resource And obtaining, by the terminal, random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; At least one of a frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration, and a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource carried in the first system message
  • the corresponding resource configuration in the configuration is different.
  • the third random access configuration resource further includes reference signal configuration, carrier indication configuration information;
  • the carrier indication configuration information is used to indicate that the terminal carries carrier information of the random access preamble;
  • the reference signal is configured to instruct the terminal to perform path loss estimation and determine a transmit power of a random access preamble resource.
  • the base station further includes a receiver, and the receiver is configured to receive the a random access preamble resource required for performing a competitive random access obtained by the terminal according to the third random access configuration resource and the pre-configured random access access configuration resource; And determining whether a random access resource collision occurs in the random access preamble resource, and sending a random access response message to the terminal.
  • the transmitter is specifically configured to: The base station sends the random access configuration resource, where the base station generates the second system message according to the random access configuration resource, and sends the second system message to the terminal; or The central 0AM sends the random access configuration resource, where the 0AM sends the random access configuration resource to the base station to which the terminal belongs, and the base station generates the second according to the random access configuration resource. System message, and sending the second system message to the terminal.
  • the user equipment receives the dedicated signaling and the first system message, where the dedicated signaling carries the first random access configuration resource, and the first system The message carries a second random access configuration resource; and according to at least one of the first random access configuration resource and the second random access configuration resource, obtain random required for performing competitive random access Accessing a preamble resource, a time domain resource, and a frequency domain resource; transmitting, according to the time domain resource and the frequency domain resource, a random access message carrying the random access preamble resource to the base station to compete Random access. Therefore, the terminal allocates additional random access resources by using the random access configuration resource in the first signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 1 is a flowchart of a method for competing random access according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for competing random access according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for competing random access according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for competing random access according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a device for competing random access according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of another apparatus for competing random access according to an embodiment of the present invention
  • FIG. 9 is another contention randomized according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of a base station according to an embodiment of the present invention. detailed description
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDM Frequency Division Multiple Addressing
  • OFDMA Orthogonal Frequency OFDMA (Orthogonal Frequency-Division Multiple Access) system
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • a base station can refer to a device in an access network that communicates over the air interface with a wireless terminal over one or more sectors or cells.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WC A, or an evolved base station (NodeB or eNB or e- in E-UTRA). NodeB, evolutional Node B), the present invention is not limited.
  • FIG. 1 is a flowchart of a method for competitive random access according to an embodiment of the present invention. among them A method for obtaining, by the user equipment, a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access according to the received dedicated signaling and the first system message is described in detail. As shown in FIG. 1, the embodiment includes the following steps:
  • Step 101 The user equipment receives the dedicated signaling and the first system message sent by the base station, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random access configuration resource.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC message, or a Media Acces s Control (MAC) message, or a Downlink Control Information (DCI).
  • the dedicated signaling may include one or more of the first frequency domain resource configuration, the first code domain resource configuration, the first time domain resource configuration, the reference signal configuration, and the carrier indication configuration information, or the physical signaling may include physical Random access channel configuration Prach-Conf iglndex information, root sequence index RootSequencelndex information, zero correlation domain offset configuration ZeroCorrelation ionZoneConf i guration information - physical random access channel offset ⁇ Prach-FreqOff set information, serving cell index One or more of the ServCel l lndex-rl O parameters.
  • the first time domain resource configuration includes at least one of a first subframe configuration information and a first preamble format configuration information, where the first code domain resource configuration includes a first root sequence configuration information, and the first zero correlation domain is biased. Transmitting at least one of the configuration information; the first frequency domain resource configuration includes a first frequency resource configuration.
  • the user may obtain a time domain resource required for performing random access; according to the preamble format configuration information, the time domain length or the cyclic prefix (CP, ci rc le pref ix ) may be determined; The sequence configuration information and the zero-related domain offset configuration information may obtain preamble information required for performing random access; according to the reference signal configuration, the transmit power of the random access preamble may be determined; according to the carrier indication configuration information, the information may be determined. The carrier carrying the random access preamble; according to the frequency resource configuration information, the frequency domain resource required for random access can be obtained.
  • the preamble format configuration information the time domain length or the cyclic prefix (CP, ci rc le pref ix ) may be determined
  • the sequence configuration information and the zero-related domain offset configuration information may obtain preamble information required for performing random access; according to the reference signal configuration, the transmit power of the random access preamble may be determined; according to the carrier indication configuration information, the information may be determined.
  • the first system message may include one or more of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration; wherein, the second time domain resource configuration includes the second subframe Configuration information, second preamble format configuration information; the second code domain resource configuration includes a second root sequence configuration information, a twentieth related domain offset configuration information; and the second frequency domain resource configuration includes a second frequency resource Configuration information.
  • the first time domain resource configuration may be different from the second time domain resource configuration; the first root sequence configuration information and the first zero correlation domain offset configuration in the first code domain resource configuration
  • the first code domain resource configuration and the second may be considered The code domain resource configuration is different.
  • the first frequency domain resource configuration information is different from the second frequency resource configuration information
  • the first frequency domain resource configuration may be different from the second frequency domain resource configuration.
  • Step 102 The user equipment acquires, according to at least one of the first random access configuration resource and the second random access configuration resource, a random access preamble resource required for performing a competitive random access. Domain resources and frequency domain resources.
  • the user equipment acquires the random access preamble resource and the time domain resource required for performing the competitive random access according to at least one of the first random access configuration resource and the second random access configuration resource.
  • the frequency domain resource includes: obtaining the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource; if the random access preamble resource cannot be obtained according to the first random access configuration resource, the time domain
  • the user equipment is configured according to the user equipment according to the second random access configuration resource.
  • the second random access configuration resource acquires at least one of a random access preamble resource, a time domain resource, and a frequency domain resource.
  • the dedicated signaling may carry an indication information, where the indication information may indicate that the user equipment acquires at least the random access preamble resource, the time domain resource, and the frequency domain resource according to the second random access configuration resource in the system message.
  • the indication information may indicate that the user equipment acquires at least the random access preamble resource, the time domain resource, and the frequency domain resource according to the second random access configuration resource in the system message.
  • the indication information is not carried in the dedicated signaling
  • the user equipment preferentially acquires the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the time domain resource required for random access may be acquired according to the first subframe configuration information; if the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information, the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information, if the dedicated signaling includes the first
  • the root sequence configuration information, but not including the first zero correlation domain offset configuration information may acquire the required random access according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the preamble information if the first zero correlation domain offset configuration information is included in the dedicated signaling but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the second in the first system message
  • the root sequence configuration information acquires preamble information required for performing random access; if the dedicated signaling includes the first frequency resource configuration information, A first frequency resource allocation information acquiring frequency-domain resources required for random access.
  • the reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided, that is, an extra 64 preamble sequences can be provided by the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new signaling element (IE), and the added preamble sequence in the new IE may be based on the first system message or the dedicated RRC signaling message.
  • the indicated root sequence information is generated.
  • the user equipment sends the random number to the base station according to the time domain resource and the frequency domain resource.
  • the random access message accessing the preamble resource is used for competitive random access.
  • the user equipment may send the random carrier to the base station according to the time domain resource and the frequency domain resource.
  • the random access message accessing the preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, the random access fails and the random access procedure needs to be re-executed.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the dedicated signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • a further embodiment of the present invention details a method for a user equipment to acquire a random access preamble resource, a time domain resource, and a frequency domain resource required for random access according to the received dedicated signaling and the first system message.
  • FIG. 1 is a flowchart of another method for competing random access according to an embodiment of the present invention.
  • the executor of the embodiment is a user equipment. As shown in FIG. 2, the embodiment includes the following steps: Step 201: Receive dedicated signaling and a system message sent by the base station.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC message, or a MAC message, or a downlink control message.
  • the dedicated signaling may include one or more of a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and carrier indication configuration information, or may include Prach in dedicated signaling. -Conf ig lndex , RootSequencelndex , ZeroCorrelat ionZoneConf i gurat ion , Prach-FreqOf f set , One or more of the ServCel l lndex-rl O parameters.
  • the first subframe configuration information when the first subframe configuration information is carried in the dedicated signaling, the first subframe configuration information is different from the second subframe configuration information carried in the first system message, or the first subframe configuration information and the second subframe
  • the frame configuration information is time-division multiplexed, and the user equipment can obtain the time domain resources required for random access according to the first subframe configuration information.
  • a macro base station can transmit to each micro base station through an interface between a macro base station and a micro base station for random use.
  • the sub-frame configuration information of the access configures the time domain resource for accessing the UE to transmit the preamble resource according to the subframe configuration information, and the micro base station may send the access UE (or the serving UE) by using dedicated signaling. It is used for random access subframe resources.
  • the above macro base station and micro base station may also be referred to as a transmission node or a network node or a base station, and the interface between them may be a transmission node or an interface between a network node or a base station.
  • the foregoing time domain resource may further include preamble format information, where the preamble format information may be the same as or different from the preamble format broadcasted in the first system message. Further, the time domain length or CP length of the preamble in the preamble format configured by the micro base station may be less than or equal to the time domain length or CP length of the preamble configured in the first system message, for example, configured in the first system message.
  • the preamble format may be format 3, and the micro base station may configure the preamble format for the UE to format 0.
  • the preamble format configured by the micro base station may be configured by the macro base station through an interface between the macro base station and the micro base station. Note that the macro base station and the micro base station herein may also be generically referred to as a base station.
  • the IE of the random access-based dedicated RRC signaling message may be defined for the time domain resource configuration, and the IE multiplexes the value defined by LTE Rel-8 or Re 10: prach-Conf iglndex INTEGER (0. . 63)
  • the set of subframes defining the time domain is used for time domain resources based on competitive random access, and the set of subframes is notified by an RRC message or a MAC message or a downlink control message.
  • the subframe set may include only the subframe configuration, and may include both the subframe configuration and the frame configuration.
  • the root sequence configuration information or the zero-related domain offset configuration information may be different from the first system message broadcast.
  • the user equipment may acquire, according to the first root sequence configuration information or the first zero correlation domain offset configuration information, a preamble resource required for performing random access.
  • the macro base station or the micro base station may notify the UE of the resources for random access by dedicated signaling.
  • the IEs that the macro base station or the micro base station can include in the dedicated RRC signaling message are as follows:
  • the resources required for the random access may be obtained only according to the first system message.
  • an additional available preamble sequence can be provided, i.e., more than 64 preamble sequences ⁇ 1 can be provided by the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new IE.
  • the preamble sequence added in the new IE may be generated according to the root sequence information indicated by the first system message or the dedicated RRC signaling message.
  • the number of specified preamble sequences that cannot be generated by a root ZC sequence can be as follows:
  • OPTIONAL ⁇ OPTIONAL ⁇ , where n let berOfRA-Preambles ENUMERATED indicate the number of preambles that can be indicated; sizeOfRA-PreamblesGroupA ENUMERATED indicates the number of non-dedicated preambles included; messageSizeGroupA indicates the threshold used for preamble selection.
  • the first frequency resource configuration information may be different from the second frequency resource configuration information of the first system message broadcast.
  • the user equipment may acquire, according to the first frequency resource configuration information, a preamble resource required for performing random access.
  • the macro base station may send a frequency offset configuration for random access to each micro base station by using an interface between the macro base station and the micro base station, and the macro base station or the micro base station configures the micro base station to access the UE according to the frequency offset configuration information.
  • the resource that sent the preamble is as follows:
  • the base station can also carry the carrier indication information, such as the server cell index ServCell Index, in the dedicated signaling, so that the user equipment can perform random access across carriers.
  • carrier indication information such as the server cell index ServCell Index
  • the base station may indicate additional frequency resources by using a first system message or dedicated signaling.
  • the additional frequency resource may be a newly added frequency resource relative to the original system, such as an FDD or TDD system with respect to LTE Release 10 or 11, a new addition in the FDD or TDD system in LTE Release 12 may be used for preamble transmission.
  • Frequency resource can also be carried in the dedicated signaling and the first System messages have different frequency resources.
  • the base station may indicate additional frequency resources by adding extra bits in the first system message, for example:
  • RadioResourceConf igCommonSIB :: SEQUENCE ⁇
  • RadioResourceConf igCommon :: SEQUENCE ⁇
  • RadioResourceConf igCommonS IB is used for system message block configuration;
  • RACH-Conf igCommon is used to configure general RACH parameters, corresponding to dedicated parameters;
  • PRACH-ConfigSIB is used to configure PRACH configuration in system messages;
  • PRACH-Conf ig is used for Configure the PRACH configuration in the mobility control information.
  • the newly added frequency resource has the same time domain resource as the original frequency resource broadcasted in the first system message.
  • the same time domain resource may be a configuration of the newly added frequency resource on the time domain resource broadcasted in the first system message.
  • R ⁇ represents the first physical resource block allocated to the PRACH; ⁇ indicates the physical resource block number configured by the higher layer signaling; indicates the number of uplink resource blocks.
  • the above is a method for the base station to indicate additional frequency resources by using the first system message.
  • the following describes a method for indicating additional frequency resources by using dedicated signaling, such as a dedicated RRC signaling message, as follows:
  • the additional frequency resources indicated by the dedicated RRC signaling are in the time domain subframe broadcast in the first system message.
  • an IE may be defined in the dedicated RRC signaling message to indicate whether an additional frequency resource is used for random access transmission, and if so, the frequency resource and the additional frequency resource in the first system message may be used simultaneously.
  • the dedicated RRC signaling message may also define a number of additional frequency resources indicated by a UE. The message containing the above two IEs can be:
  • RACH-ConfigDedicated-vl2 defines dedicated RRC signaling for RACH parameter configuration; Enable-both-prach-Conf iglndex-and-addi t ional whether the rach configuration index of the existing system and the newly added prach configuration index are valid at the same time.
  • Configuration prach-Conf iglndex-Addi t iona l-vl 1 The prach has been placed on the E.
  • n is the number of new PRACH frequency resources defined in the first system message or dedicated RRC signaling.
  • only one IE may be used to indicate whether there are additional frequency resources and several additional frequency resources, and according to the value of the one IE, indicate whether there are additional frequency resources and several additional frequency resources.
  • the message containing the IE can be:
  • the user equipment can use the additional frequency resource and the frequency resource indicated by the first system message at the same time, and the base station side can also indicate that the user equipment uses only the additional frequency by defining an IE. Resources are randomly accessed.
  • the defined IE is as follows: prach-Conf i g Index-Add i t iona 1-vl 1 INTEGER (0. . N)
  • additional frequency resources are indicated by a random access PRACH configuration index.
  • Each additional frequency resource configuration index corresponds to a configuration index of a non-extra frequency resource, and the number of additional frequency resources may be the same as the number of non-additional frequency resources, such as one for the FDD system and one for the TDD system. One to six.
  • each PRACH configuration index may be indicated by dedicated RRC signaling, and an IE is defined, including the number of PRACH configuration indexes that can be configured.
  • N When no additional frequency resources are added, the value of N is 64, when one is added.
  • the IE of the PRACH configuration with additional frequency resources can be as follows:
  • the message including the IE can be as follows:
  • n is a count of the competing PRACH frequency resources defined in the first system message and the dedicated RRC signaling in one subframe, and the count of n starts from the frequency resource in the first system message. For example, in the FDD system, if the number of the frequency resources of the subframe in which the random access is broadcasted in the first system message is 1, the frequency resource count in the first system message is 0, and the dedicated RRC signaling for the competitive random access is used. The first frequency resource count in the count is 1, the second frequency resource count is 2, and so on.
  • the system can determine that the UE only sends the preamb le on the time-frequency resource corresponding to the specified PRACH configuration index, and the system can also specify the configuration of the UE in the specified PRACH configuration index and nx*64.
  • x can be signaled or x can take all X values that meet the above inequality.
  • the dedicated RRC signaling in the above method may indicate that a subframe different from the first system message is used for PRACH transmission.
  • the dedicated RRC signaling may indicate that a subframe different from the first system message is used for PRACH transmission.
  • Dedicated RRC signaling notifies time domain resources and additional frequency resources, unlike the previous method
  • the PRACH Configuration Index IE (Time Domain Resource) and the IE indicating the number of additional frequency resources are simultaneously defined using dedicated RRC signaling.
  • the message containing the above two IEs can be:
  • the frequency resource count is counted by the priority of the first system message (the first system message broadcasts). The frequency resources are counted from 0, and are sequentially performed. Then, the frequency resources used for random access are counted, otherwise, the frequency resource numbers given by the random access signaling are sequentially counted.
  • Step 202 Acquire random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access according to the dedicated signaling and the first system message.
  • the user equipment obtains, according to the first random access configuration resource, the random access preamble resource, the time domain resource, and the frequency domain resource required for performing the competitive random access, including: acquiring the random access according to the first random access configuration resource
  • the preamble resource, the time domain resource, and the frequency domain resource are included; if at least one of the random access preamble resource, the time domain resource, and the frequency domain resource cannot be obtained according to the first random access configuration resource, or the network signaling indication
  • the user equipment acquires the random access preamble resource and the time domain according to the second random access configuration resource. At least one of a resource and a frequency domain resource.
  • the dedicated signaling may carry an indication information, where the indication information may indicate the user equipment root.
  • the indication information may indicate the user equipment root.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the first subframe configuration information is included in the dedicated signaling
  • the time domain resource required for random access may be acquired according to the first subframe configuration information
  • the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information
  • the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information
  • the dedicated signaling includes the first
  • the root sequence configuration information but not including the first zero correlation domain offset configuration information, may acquire the required random access according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the preamble information if the first zero correlation domain offset configuration information is included in the dedicated signaling but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the second in the first system message
  • the root sequence configuration information acquires preamble information required for random access; if the dedicated signaling includes the first frequency resource configuration information, In a first configuration information according to the frequency resource acquisition frequency domain resources required for random access.
  • the reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided, that is, an extra 64 preamble sequences can be provided by the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new IE.
  • the preamble sequence added in the new IE may be generated according to the root sequence information indicated by the first system message or the dedicated RRC signaling message.
  • a pre-defined consecutive root sequence index can be used to generate the remaining preamble sequences.
  • the newly defined signaling elements can be as follows:
  • n makes berOfRA-Preambles ENUMERATED indicate the number of preambles that can be indicated; sizeOfRA-PreamblesGroupA ENUMERATED indicates the number of non-dedicated preambles included; messageSizeGroupA indicates the threshold used for preamble selection.
  • Step 203 Send a random access message carrying a random access preamble to the base station to perform the competition. Random access.
  • the user equipment may send the random carrier to the base station according to the time domain resource and the frequency domain resource.
  • the random access message accessing the preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, the random access fails and the random access process needs to be restarted.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the dedicated signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • the foregoing two embodiments describe a method for a user equipment to acquire a random access preamble resource, a time domain resource, and a frequency domain resource required for random access according to the received dedicated signaling and the first system message.
  • the following embodiments describe a method in which a base station sends a second system message to a terminal without transmitting dedicated signaling, and the user equipment acquires a random access configuration resource according to the received second system message to perform random access.
  • FIG. 3 is a flowchart of another method for competing random access according to an embodiment of the present invention.
  • the executive body of this embodiment is a user equipment. As shown in FIG. 3, this embodiment includes the following steps:
  • Step 301 The user equipment receives the second system message sent by the base station, where the second system message carries the third random access configuration resource.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; a third frequency domain resource configuration, a third code domain resource configuration, At least one of the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes at least one of a third subframe configuration information and a third preamble format configuration information, where the third code domain resource configuration includes a third root sequence configuration information, and a third zero correlation domain.
  • the third frequency domain resource configuration includes a third frequency resource configuration.
  • the first system message may be for a common user equipment or an existing system device, and the third system message is for a specific user equipment, and the specific user equipment may directly receive the second system message for RACH access, and avoid existing users. The conflict of the device RACH. It should be noted that the first system message may be sent by the network side to the ordinary user equipment or the existing system equipment in the system broadcast, and the third system message is directed to the specific user equipment, and the specific user equipment may directly receive the second The system message performs competitive random access and avoids conflicts with random access of existing user equipment.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information. Specifically, at least one of the third subframe configuration information and the third preamble format configuration information in the third time domain resource configuration and the second subframe configuration information in the second time domain resource configuration, the second preamble When at least one of the format configuration information is different, the third time domain resource configuration may be considered to be different from the second time domain resource configuration; the third root region configuration information in the third code domain resource configuration, and the third zero correlation domain offset When at least one of the configuration information is different from at least one of the second sequence configuration information and the second correlation domain offset configuration information in the second code domain resource configuration, the third code domain resource configuration and the third The configuration of the second frequency domain resource is different. When the third frequency resource configuration information is different from the second frequency resource configuration information, the third frequency domain resource configuration may be considered to be different from the second frequency domain resource configuration.
  • Step 302 The user equipment acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing the competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the user equipment may be set in the pre-configured random access configuration resource.
  • Random access resources if the pre-configured random access configuration resource is empty; the user equipment obtains the random connection required for the competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the method of entering the preamble resource, the time domain resource, and the frequency domain resource is: acquiring the random access preamble resource, the time domain resource, and the frequency domain required for performing the competitive random access according to the third random access configuration resource Resources.
  • the user equipment configures the resource according to the third random access and the pre-configured random connection.
  • the method for obtaining the random access preamble resource, the time domain resource, and the frequency domain resource required for the competitive random access is as follows: according to the pre-configured random access configuration resource, combining the third The random access configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the frequency domain resource used for random access may be preferentially acquired according to the pre-configured resource.
  • the user equipment After receiving the second system message sent by the base station, further includes: determining, according to the reference signal configuration, a transmit power of the random access preamble;
  • the sending, by the base station, the random access message includes: sending the random access message to the base station according to the transmit power.
  • the second system message includes a reference signal configuration (the reference signal configuration may be a channel state information reference symbol or a reference symbol used for radio resource management measurement or a reference signal configuration for time-frequency tracking), Determining a transmit power of the random access preamble according to the reference signal configuration; if the dedicated signaling includes the carrier indication configuration information, determining, according to the carrier indication configuration information, a carrier for carrying the random access preamble.
  • the reference signal configuration may be a channel state information reference symbol or a reference symbol used for radio resource management measurement or a reference signal configuration for time-frequency tracking
  • Step 303 The user equipment sends a random connection to the base station according to the time domain resource and the frequency domain resource.
  • the random access message into the preamble resource performs competitive random access.
  • the user equipment may send the bearer to the base station according to the time domain resource and the frequency domain resource.
  • the random access message of the random access preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, the random access fails and the random access procedure needs to be re-established.
  • the base station can allocate additional random access resources to the user equipment by using the second random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • the foregoing embodiment describes a method for performing random access after the user equipment receives the signaling of the random access configuration resource sent by the base station, and the following describes, by using the embodiment, the base station side terminal sends a message carrying the random access configuration resource. The method of order.
  • FIG. 4 is a flowchart of another method for competing random access according to an embodiment of the present invention.
  • the executive body of this embodiment is the network side, such as a base station.
  • the embodiment includes the following steps: Step 401: Obtain a random access configuration resource for a user equipment to perform a random random access, where the random access configuration resource includes a first random access configuration resource. And a second random access configuration resource.
  • the base station can allocate an access UE for the UE according to the number of access UEs. Random access configuration resources accessed by the machine.
  • the random access configuration resource can be indicated by dedicated signaling in addition to the first system message broadcast.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC signaling message, or a MAC message, or a downlink control message.
  • the first random access configuration resource may be included in the dedicated signaling, and the second random access configuration resource may be included in the first system message.
  • Step 402 Send the dedicated signaling and the first system message to the user equipment, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random Accessing a configuration resource, where the user equipment acquires random access required for performing competitive random access according to at least one of the first random access configuration resource and the second random access configuration resource Preamble resources, time domain resources, and frequency domain resources.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and a carrier indication configuration information, where the carrier indication configuration information is used by And the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a transmit power of the random access preamble resource, where the user equipment is configured to carry the carrier information of the random access preamble.
  • the first time domain resource configuration includes at least one of first subframe configuration information and first preamble format configuration information; the first code domain resource configuration includes first root sequence configuration information, and a first zero correlation domain offset At least one of configuration information; the first frequency domain resource configuration includes a first frequency resource configuration.
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration.
  • the second time domain resource configuration includes second subframe configuration information, second preamble format configuration information, and the second code domain resource configuration includes a second root sequence configuration information, and the second related domain offset configuration Information;
  • the second frequency domain resource configuration includes second frequency resource configuration information.
  • the user equipment After transmitting the dedicated signaling and the first system message to the user equipment, the user equipment acquires a random access preamble resource, a time domain resource, and a frequency domain required for performing random access according to the dedicated signaling and the first system message. a resource, and sending a random access preamble resource to the network side, after receiving the preamble resource, the network side may determine whether the preamble resource has a random access resource collision, and The user equipment sends a random access response message.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the first subframe configuration information is included in the dedicated signaling
  • the time domain resource required for random access may be acquired according to the first subframe configuration information
  • the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information
  • the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information
  • the dedicated signaling includes the first
  • the root sequence configuration information but not including the first zero correlation domain offset configuration information, may acquire the required random access according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the preamble information if the first zero correlation domain offset configuration information is included in the dedicated signaling but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the second in the first system message
  • the root sequence configuration information acquires preamble information required for random access; if the dedicated signaling includes the first frequency resource configuration information, In a first configuration information according to the frequency resource acquisition frequency domain resources required for random access.
  • the reference signal configuration is included in the dedicated signaling, where the reference signal configuration may be a channel state information reference symbol or a reference symbol used for radio resource management measurement or a reference signal configuration for time-frequency tracking
  • the channel state information reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided to provide an extra 64 preamble sequences through the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new IE.
  • the preamble sequence added in the new IE may be generated according to the root sequence information indicated by the first system message or the dedicated RRC signaling message.
  • the remaining consecutive root sequence indices can be used to generate the remaining preamble sequences.
  • Sending the dedicated signaling and the first system message to the user equipment is specifically: to the user equipment
  • the associated base station sends the random access configuration resource, where the base station generates the first signaling and the first system message according to the random access configuration resource, and sends the first signaling and the first system message to the user equipment; or
  • the network management center (OAM) transmits a random access configuration resource, and uses the 0AM to send a random access configuration resource to the base station to which the user equipment belongs, and is used by the base station to generate a resource according to the random access configuration resource.
  • a signaling and a first system message and transmitting the first signaling and the first system message to the user equipment.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station may also send configuration information for the PRACH to the 0AM, and the 0AM may, according to the configuration information, instruct the micro base station to access the configuration resource used by the UE to perform random access according to the configuration information.
  • the network side acquires a random access configuration resource for the user equipment to perform the competitive random access, where the random access configuration resource includes the first random access configuration resource and the second random access configuration.
  • the resource sends a dedicated signaling and a first system message to the user equipment, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random access configuration resource, and is used by the user equipment according to the first
  • At least one of a random access configuration resource and a second random access configuration resource acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access. Therefore, the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the dedicated signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 5 is a flowchart of another method for competing random access according to an embodiment of the present invention.
  • the executive body of this embodiment is the network side, such as a base station. As shown in FIG. 5, this embodiment includes the following steps:
  • Step 501 Obtain a random access configuration resource for performing a contentive random access by the user equipment, where the random access configuration resource includes a third random access configuration resource.
  • the base station can allocate an access UE for the UE according to the number of access UEs. Random access configuration resources accessed by the machine.
  • the random access configuration resource may be indicated by a second system message in addition to the first system message broadcast.
  • the user equipment may only receive the second system message.
  • Step 502 Send a second system message to the user equipment, where the second system message carries the third random access configuration resource, where the user equipment allocates resources according to the third random access
  • the pre-configured random access configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; the third frequency domain resource configuration, the third code domain resource configuration, At least one of the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes at least one of a third subframe configuration information and a third preamble format configuration information, where the third code domain resource configuration includes a third root sequence configuration information, and a third zero correlation domain. At least one of offset configuration information; the third frequency domain resource configuration includes a third frequency resource configuration.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information.
  • the carrier indication configuration information is used to indicate that the user equipment carries the carrier information of the random access preamble; the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a random access preamble resource. Transmit power.
  • the user equipment After the second system message is sent to the user equipment, the user equipment acquires the random access preamble resource, the time domain resource, and the frequency domain resource required for the random access according to the second system message and the pre-configured resource, and thus the network side Determining, by the user equipment, the random access preamble resource required for the competitive random access obtained by the user equipment according to the third random access configuration resource and the pre-configured random access access configuration resource, and determining the random access preamble Whether a random access resource collision occurs in the code resource, and a random access response message is sent to the user equipment.
  • the sending the second system message to the user equipment is: sending a random access configuration resource to the base station to which the user equipment belongs, where the base station generates the second system message according to the random access configuration resource, And sending the second system message to the user equipment; or sending the random access configuration resource to the 0AM, where the 0AM sends the random access configuration resource to the base station to which the user equipment belongs, and the base station generates the second system according to the random access configuration resource.
  • Message and send the second system message to the user device.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station may also send configuration information for the PRACH to the 0AM, and the 0AM may, according to the configuration information, instruct the micro base station to access the configuration resource used by the UE to perform random access according to the configuration information.
  • the base station may send the first system message in addition to sending the second system message to the terminal.
  • the terminal may or may not receive.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 6 is a schematic diagram of a device for competing random access according to an embodiment of the present invention. As shown in FIG. 6, the embodiment includes the following units:
  • the receiving unit 601 is configured to receive the dedicated signaling and the first system message sent by the base station, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random access configuration And transmitting the dedicated signaling and the first system message to the acquiring unit.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC signaling message, or a MAC message, or a DCI.
  • the dedicated signaling may include one or more of a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and carrier indication configuration information, or may include Prach in dedicated signaling.
  • the first time domain resource configuration includes first subframe configuration information, and the first preamble format configuration information. At least one of the first code domain resource configuration includes at least one of a first root sequence configuration information and a first zero correlation domain offset configuration information; the first frequency domain resource configuration includes a first frequency resource Configuration.
  • the user may obtain a time domain resource required for performing random access; according to the preamble format configuration information, the time domain length or CP may be determined; according to the root sequence configuration information and the zero correlation domain offset configuration
  • the information may be used to obtain the preamble information required for the random access; the transmit power of the random access preamble may be determined according to the reference signal configuration; and the carrier used to carry the random access preamble may be determined according to the carrier indication configuration information;
  • the frequency domain resources required for random access can be obtained according to the frequency resource configuration information.
  • the first system message may include one or more of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration; wherein, the second time domain resource configuration includes the second subframe configuration Information, the second preamble format configuration information; the second code domain resource configuration includes a second root sequence configuration information, a twentieth related domain offset configuration information; and the second frequency domain resource configuration includes a second frequency resource configuration information.
  • the first time domain resource configuration may be different from the second time domain resource configuration; the first root sequence configuration information and the first zero correlation domain offset configuration in the first code domain resource configuration
  • the first code domain resource configuration and the second may be considered The code domain resource configuration is different.
  • the first frequency domain resource configuration information is different from the second frequency resource configuration information
  • the first frequency domain resource configuration may be different from the second frequency domain resource configuration.
  • the obtaining unit 602 is configured to receive the dedicated signaling sent by the receiving unit and the first system message, according to at least one of the first random access configuration resource and the second random access configuration resource Obtaining a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access, and using the random access preamble resource, the time domain resource, and the frequency domain resource Transfer to the sending unit.
  • the obtaining unit 602 is specifically configured to: acquire the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource; and configure resources according to the first random access When the random access preamble resource, the time domain resource, and the frequency domain resource are not available, or the network signaling indicates that the random access is obtained according to the second random access configuration resource.
  • the user equipment acquires the random access preamble resource, the time domain according to the second random access configuration resource, when the at least one of the preamble resource, the time domain resource, and the frequency domain resource At least one of a resource and the frequency domain resource.
  • the dedicated signaling may carry an indication information, where the indication information may indicate that the user equipment preferentially acquires the random access preamble resource, the time domain resource, and the frequency domain resource according to the second random access configuration resource in the system message. If the indication information is not carried in the dedicated signaling, the user equipment preferentially acquires the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the first subframe configuration information is included in the dedicated signaling
  • the time domain resource required for random access may be acquired according to the first subframe configuration information
  • the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information
  • the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information
  • the dedicated signaling includes the first
  • the root sequence configuration information but not including the first zero correlation domain offset configuration information, may acquire the required random access according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the preamble information if the first zero correlation domain offset configuration information is included in the dedicated signaling but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the second in the first system message
  • the root sequence configuration information acquires preamble information required for random access; if the dedicated signaling includes the first frequency resource configuration information, In a first configuration information according to the frequency resource acquisition frequency domain resources required for random access.
  • the dedicated signaling includes a reference signal configuration (the reference signal configuration may be a letter) a channel state information reference symbol or a reference symbol for radio resource management measurement or a reference signal configuration for time-frequency tracking), then determining a transmit power of the random access preamble according to the reference signal configuration; if the dedicated signaling includes The carrier indicates the configuration information, and the carrier used to carry the random access preamble may be determined according to the carrier indication configuration information.
  • the reference signal configuration may be a letter
  • an additional available preamble sequence can be provided to provide an extra 64 preamble sequences through the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new signaling element IE, and the added preamble sequence in the new IE may be performed according to the root sequence information indicated by the first system message or the dedicated RRC signaling message. Generated, when the number of specified preamble sequences cannot be generated by a root ZC sequence, the remaining consecutive root sequence indices can be used to generate the remaining preamble sequences.
  • the sending unit 603 is configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the acquiring unit, according to the time domain resource and the frequency domain resource, to the The base station sends a random access message carrying the random access preamble resource to perform competitive random access.
  • the user equipment may send the random carrier to the base station according to the time domain resource and the frequency domain resource.
  • the random access message accessing the preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, random access fails and needs to be re-run Machine access process.
  • the embodiment of the present invention further includes a first determining unit 604, configured to determine, according to the reference signal configuration, a transmit power of the random access preamble.
  • the sending unit 603 sends the random access message to the base station according to the transmit power.
  • the embodiment of the present invention further includes a second determining unit 605, configured to determine, according to the carrier indication configuration information, a carrier used to carry the random access preamble.
  • the transmitting unit 603 transmits a random access message to the base station through the carrier determined by the second determining unit 605.
  • the user equipment can obtain the random access resources required for the competitive random access by using the dedicated signaling and the random access configuration resource in the first system message, thereby improving the random access channel capacity and reducing the user equipment.
  • the time delay of random access is a short period of time.
  • FIG. 7 is a schematic diagram of another device for competing random access according to an embodiment of the present invention.
  • the main body of this embodiment is a user device. As shown in FIG. 7, this embodiment includes the following units:
  • the receiving unit 701 is configured to receive a second system message sent by the base station, where the second system message carries a third random access configuration resource, and the third random access configuration resource is transmitted to the acquiring unit.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; a third frequency domain resource configuration, a third code domain resource configuration, At least one of the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes at least one of a third subframe configuration information and a third preamble format configuration information, where the third code domain resource configuration includes a third root sequence configuration information, and a third zero correlation domain. At least one of offset configuration information; the third frequency domain resource configuration includes a third frequency resource allocation Set.
  • the first system message may be sent by the network side to the ordinary user equipment or the existing system equipment in the system broadcast, and the third system message is directed to the specific user equipment, and the specific user equipment may directly receive the second The system message performs competitive random access and avoids conflicts with random access of existing user equipment.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information. Specifically, at least one of the third subframe configuration information and the third preamble format configuration information in the third time domain resource configuration and the second subframe configuration information in the second time domain resource configuration, the second preamble When at least one of the format configuration information is different, the third time domain resource configuration may be considered to be different from the second time domain resource configuration; the third root region configuration information in the third code domain resource configuration, and the third zero correlation domain offset When at least one of the configuration information is different from at least one of the second sequence configuration information and the second correlation domain offset configuration information in the second code domain resource configuration, the third code domain resource configuration and the third The configuration of the second frequency domain resource is different. When the third frequency resource configuration information is different from the second frequency resource configuration information, the third frequency domain resource configuration may be considered to be different from the second frequency domain resource configuration.
  • the acquiring unit 702 is configured to receive the third random access configuration resource that is sent by the receiving unit, and obtain a competitive random connection according to the third random access configuration resource and the pre-configured random access configuration resource. Transmitting a random access preamble resource, a time domain resource, and a frequency domain resource, and transmitting the random access preamble resource, the time domain resource, and the frequency domain resource to a sending unit.
  • the random access resource of the user equipment may be set in the pre-configured random access configuration resource, if the pre-configured random access configuration resource is empty; the obtaining unit 702 is specifically configured to: according to the third random connection
  • the ingress configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the acquiring unit 702 is specifically configured to: configure resources according to the pre-configured random access And acquiring, according to the third random access configuration resource, a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access. Specifically, if at least one of the frequency domain resource configuration, the code domain resource configuration, and the time domain resource configuration is configured in the pre-configured resource, the frequency domain resource used for random access may be preferentially acquired according to the pre-configured resource.
  • the sending unit 703 is configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the acquiring unit, according to the time domain resource and the frequency domain resource, to the The base station sends a random access message carrying the random access preamble resource to perform competitive random access
  • the user equipment may send the bearer to the base station according to the time domain resource and the frequency domain resource.
  • the random access message of the random access preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, the random access fails and the random access procedure needs to be re-established.
  • the device further includes: a first determining unit 704, configured to determine, according to the reference signal configuration, a transmit power of the random access preamble.
  • the sending unit 703 is specifically configured to: send the random access message to the base station according to the transmit power.
  • the device further includes: a second determining unit 705, configured to allocate according to the carrier indication And setting information, determining a carrier used to carry the random access preamble.
  • the sending unit 703 is specifically configured to: send the random access message to the base station by using the carrier.
  • the reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • the base station can allocate additional random access resources to the user equipment by using the second random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 8 is a schematic diagram of another apparatus for competing random access according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes the following units:
  • the obtaining unit 801 is configured to acquire a random access configuration resource for the user equipment to perform the contentive random access, where the random access configuration resource includes the first random access configuration resource and the second random access configuration resource, where The first random access configuration resource and the second random access configuration resource are transmitted to a sending unit.
  • the base station may allocate a random access configuration resource for the UE to perform random access according to the number of access UEs.
  • the random access configuration resource can be indicated by dedicated signaling in addition to the first system message broadcast.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC signaling message, or a MAC message, or a downlink control message.
  • the first random access configuration resource may be included in the dedicated signaling, and the second random access configuration resource may be included in the first system message.
  • the sending unit 802 is configured to receive the first random access configuration resource and the second random access configuration resource that are sent by the acquiring unit, and send the dedicated signaling and the first system message to the user equipment, where
  • the first signaling request carries the first random access configuration resource
  • the first system message carries the second random access configuration resource
  • the user equipment is configured according to the first random access
  • At least one of the resource and the second random access configuration resource acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and a carrier indication configuration information, where the carrier indication configuration information is used by And the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a transmit power of the random access preamble resource, where the user equipment is configured to carry the carrier information of the random access preamble.
  • the first time domain resource configuration includes at least one of first subframe configuration information and first preamble format configuration information; the first code domain resource configuration includes first root sequence configuration information, and a first zero correlation domain offset At least one of configuration information; the first frequency domain resource configuration includes a first frequency resource configuration.
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration.
  • the second time domain resource configuration includes second subframe configuration information, second preamble format configuration information, and the second code domain resource configuration includes a second root sequence configuration information, and the second related domain offset configuration Information;
  • the second frequency domain resource configuration includes second frequency resource configuration information.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the first subframe configuration information is included in the dedicated signaling
  • the time domain resource required for random access may be acquired according to the first subframe configuration information
  • the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information
  • the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information
  • the dedicated signaling includes the first
  • the root sequence configuration information, but not including the first zero correlation domain offset configuration information may be obtained according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the required preamble information if the dedicated zero signaling includes the first zero correlation domain offset configuration information but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the first system message
  • the second sequence configuration information is used to obtain the preamble information required for the random access. If the first frequency resource configuration information is included in the dedicated signaling, the frequency required for the random access may be obtained according to the first frequency resource configuration information. Domain resource.
  • the reference signal configuration is included in the dedicated signaling, where the reference signal configuration may be a channel state information reference symbol or a reference symbol used for radio resource management measurement or a reference signal configuration for time-frequency tracking
  • the channel state information reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided to provide an extra 64 preamble sequences through the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new IE.
  • the preamble sequence added in the new IE may be generated according to the root sequence information indicated by the first system message or the dedicated RRC signaling message.
  • the remaining consecutive root sequence indices can be used to generate the remaining preamble sequences.
  • the sending unit 802 is specifically configured to: send the random access configuration resource to the base station to which the user equipment belongs, where the base station generates the first signaling and the first system according to the random access configuration resource And sending the first signaling and the first system message to the user equipment; or sending the random access configuration resource to the network management center 0AM, where the 0AM is used to belong to the user equipment
  • the base station sends the random access configuration resource, where the base station generates the first signaling and the first system message according to the random access configuration resource, and the first signaling and the The first system message is sent to the user equipment.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station can also send the PRACH to the 0AM. After the configuration information is received, the 0AM can indicate, according to the configuration information, the configuration resource that the micro base station accesses the UE for performing random access.
  • the embodiment of the present invention further includes: a receiving unit 803, configured to receive, by the user equipment, the obtained by using at least one of the first random access configuration resource and the second random access configuration resource a random access preamble resource required for contention random access; a determining unit 804, configured to determine whether a random access resource collision occurs in the random access preamble resource, and send a random access response to the user equipment Message.
  • a receiving unit 803 configured to receive, by the user equipment, the obtained by using at least one of the first random access configuration resource and the second random access configuration resource a random access preamble resource required for contention random access
  • a determining unit 804 configured to determine whether a random access resource collision occurs in the random access preamble resource, and send a random access response to the user equipment Message.
  • the user equipment After transmitting the dedicated signaling and the first system message to the user equipment, the user equipment acquires a random access preamble resource, a time domain resource, and a frequency domain required for performing random access according to the dedicated signaling and the first system message.
  • the resource sends a random access preamble resource to the network side.
  • the network side After receiving the preamble resource, the network side can determine whether the preamble resource has a random access resource collision, and send a random access response message to the user equipment.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the dedicated signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 9 is a schematic diagram of another apparatus for competing random access according to an embodiment of the present invention. As shown in Figure 9, this embodiment includes the following units:
  • the obtaining unit 901 is configured to acquire a random access configuration resource for the user equipment to perform the contentive random access, where the random access configuration resource includes a third random access configuration resource, and the third random access configuration is configured. Resource transfer to the sending unit
  • the base station may allocate a random access configuration resource for the UE to perform random access according to the number of accessing the UE.
  • the random access configuration resource may be indicated by a second system message in addition to the first system message broadcast.
  • the sending unit 902 is configured to receive the third random access configuration resource that is sent by the acquiring unit, and send a second system message to the user equipment, where the second system message carries the third random access Configuring a resource, where the user equipment acquires a random access preamble resource, a time domain resource, and a random access preamble resource required for performing a competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource.
  • Frequency domain resources Frequency domain resources
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; the third frequency domain resource configuration, and the third code domain resource At least one of the configuration and the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes at least one of a third subframe configuration information and a third preamble format configuration information, where the third code domain resource configuration includes a third root sequence configuration information, and a third zero correlation domain. At least one of offset configuration information; the third frequency domain resource configuration includes a third frequency resource configuration.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information.
  • the carrier indication configuration information is used to indicate that the user equipment carries the carrier information of the random access preamble; the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a random access preamble resource. Transmit power.
  • the sending unit 902 is specifically configured to: send the random access configuration resource to the base station to which the user equipment belongs, where the base station generates the second system message according to the random access configuration resource, and Sending the second system message to the user equipment; or sending the random access configuration resource to the network management center 0AM, where the 0AM sends the random access configuration resource to the base station to which the user equipment belongs, The base station generates the second system message according to the random access configuration resource, and sends the second system message to the user equipment.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station can also send the PRACH to the 0AM. After the configuration information is received, the 0AM can indicate, according to the configuration information, the configuration resource that the micro base station accesses the UE for performing random access.
  • the apparatus provided by the embodiment of the present invention further includes: a receiving unit 903, a determining unit 904, and a receiving unit 903, configured to receive, according to the third random access configuration resource, the pre-configured random number, by the user equipment.
  • a receiving unit 903, a determining unit 904, and a receiving unit 903, configured to receive, according to the third random access configuration resource, the pre-configured random number, by the user equipment.
  • the determining unit 904 is configured to determine whether the random access preamble resource has a random access resource collision, and The user equipment sends a random access response message.
  • the user equipment acquires the random access preamble resource, the time domain resource, and the frequency domain resource required for the random access according to the second system message and the pre-configured resource.
  • the network side may receive the random access preamble resource required for the competitive random access obtained by the user equipment according to the third random access configuration resource and the pre-configured random access access configuration resource, and determine the random Whether a random access resource collision occurs in the access preamble resource, and a random access response message is sent to the user equipment.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 10 is a schematic diagram of a user equipment according to an embodiment of the present invention. As shown in Figure 10, this embodiment includes the following components:
  • the receiver 1001 is configured to receive the dedicated signaling and the first system message sent by the base station, where the dedicated signaling carries the first random access configuration resource, where the first system message carries the second random access configuration And transmitting the first random access configuration resource to the processor.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC signaling message, or a MAC message, or a DCI.
  • the dedicated signaling may include a first frequency domain resource configuration, a first code domain resource configuration, One or more of the first time domain resource configuration, the reference signal configuration, and the carrier indication configuration information, or the dedicated signaling may include a Prach-Conf ig lndex , a Root Sequence Index , a ZeroCorrelat ionZoneConf igurat ion , a Prach-FreqOf f set ,
  • the first time domain resource configuration includes at least one of a first subframe configuration information and a first preamble format configuration information, where the first code domain resource configuration includes a first root sequence configuration information, and the first zero correlation domain is biased. Transmitting at least one of the configuration information; the first frequency domain resource configuration includes a first frequency resource configuration.
  • the user may obtain a time domain resource required for performing random access; according to the preamble format configuration information, the time domain length or CP may be determined; according to the root sequence configuration information and the zero correlation domain offset configuration
  • the information may be used to obtain the preamble information required for the random access; the transmit power of the random access preamble may be determined according to the reference signal configuration; and the carrier used to carry the random access preamble may be determined according to the carrier indication configuration information;
  • the frequency domain resources required for random access can be obtained according to the frequency resource configuration information.
  • the first system message may include one or more of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration; wherein, the second time domain resource configuration includes the second subframe configuration Information, the second preamble format configuration information; the second code domain resource configuration includes a second root sequence configuration information, a twentieth related domain offset configuration information; and the second frequency domain resource configuration includes a second frequency resource configuration information.
  • the first time domain resource configuration may be different from the second time domain resource configuration; the first root sequence configuration information and the first zero correlation domain offset configuration in the first code domain resource configuration
  • the first code domain resource configuration and the second may be considered The code domain resource configuration is different.
  • the first frequency domain resource configuration information is different from the second frequency resource configuration information
  • the first frequency domain resource configuration may be different from the second frequency domain resource configuration.
  • the processor 1002 is configured to acquire, according to at least one of the first random access configuration resource and the second random access configuration resource, a random access preamble resource required for performing a competitive random access, The time domain resource and the frequency domain resource, and the random access preamble resource, the time domain resource, and the frequency domain resource are transmitted to the transmitter.
  • the processor 1002 is specifically configured to: acquire the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource; and configure resources according to the first random access When the random access preamble resource, the time domain resource, and the frequency domain resource are not available, or the network signaling indicates that the random access is obtained according to the second random access configuration resource.
  • the user equipment acquires the random access preamble resource, the time domain according to the second random access configuration resource, when the at least one of the preamble resource, the time domain resource, and the frequency domain resource At least one of a resource and the frequency domain resource.
  • the dedicated signaling may carry an indication information, where the indication information may indicate that the user equipment preferentially acquires the random access preamble resource, the time domain resource, and the frequency domain resource according to the second random access configuration resource in the system message. If the indication information is not carried in the dedicated signaling, the user equipment preferentially acquires the random access preamble resource, the time domain resource, and the frequency domain resource according to the first random access configuration resource.
  • the reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided, that is, an extra 64 preamble sequences can be provided by the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new signaling element IE, and the added preamble sequence in the new IE may be performed according to the root sequence information indicated by the first system message or the dedicated RRC signaling message. Generated, when the number of specified preamble sequences cannot be generated by a root ZC sequence, the reservation can be used. The continuous continuous root sequence index generates the remaining preamble sequences.
  • the transmitter 1003 is configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the processor, according to the time domain resource and the frequency domain resource, to the The base station sends a random access message carrying the random access preamble resource to perform competitive random access.
  • the processor 1002 is further configured to: determine, according to the reference signal configuration, a transmit power of the random access preamble.
  • the transmitter 1003 is specifically configured to: send the random access message to the base station according to the transmit power.
  • the processor 1002 is further configured to: determine, according to the carrier indication configuration information, a carrier used to carry the random access preamble.
  • the transmitter 1003 is specifically configured to: send the random access message to the base station by using the carrier.
  • the user equipment can acquire the random access resources required for the competitive random access by using the dedicated signaling and the random access configuration resource in the first system message, thereby improving the random access channel capacity and reducing the user equipment.
  • the time delay of random access is a short period of time.
  • FIG. 11 is a schematic diagram of another user equipment provided by an embodiment of the present invention. As shown in Figure 11, this embodiment includes the following components:
  • the receiver 1101 is configured to receive a second system message sent by the base station, where the second system message carries a third random access configuration resource, and the third random access configuration resource is transmitted to the processor.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; a third frequency domain resource configuration, a third code domain resource configuration, At least one of the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes third subframe configuration information, and the third preamble format configuration information is used.
  • At least one of the third code domain resource configuration includes at least one of a third root sequence configuration information and a third zero correlation domain offset configuration information; the third frequency domain resource configuration includes a third frequency resource configuration .
  • the first system message may be sent by the network side to the ordinary user equipment or the existing system equipment in the system broadcast, and the third system message is directed to the specific user equipment, and the specific user equipment may directly receive the second The system message performs competitive random access and avoids conflicts with random access of existing user equipment.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information. Specifically, at least one of the third subframe configuration information and the third preamble format configuration information in the third time domain resource configuration and the second subframe configuration information in the second time domain resource configuration, the second preamble When at least one of the format configuration information is different, the third time domain resource configuration may be considered to be different from the second time domain resource configuration; the third root region configuration information in the third code domain resource configuration, and the third zero correlation domain offset When at least one of the configuration information is different from at least one of the second sequence configuration information and the second correlation domain offset configuration information in the second code domain resource configuration, the third code domain resource configuration and the third The configuration of the second frequency domain resource is different.
  • the third frequency domain resource configuration may be considered to be different from the second frequency domain resource configuration.
  • the processor 11 02 is configured to receive the third random access configuration resource that is sent by the receiver, and obtain a competitive random according to the third random access configuration resource and a pre-configured random access configuration resource. And accessing the required random access preamble resource, the time domain resource, and the frequency domain resource, and transmitting the random access preamble resource, the time domain resource, and the frequency domain resource to the transmitter.
  • the random access resource of the user equipment may be set in the pre-configured random access configuration resource, if the pre-configured random access configuration resource is empty; the processor 11 02 is specifically configured to: according to the third random The access configuration resource acquires random access preamble resources, time domain resources, and frequency domain resources required for performing competitive random access.
  • the processor 1102 is specifically configured to: configure resources according to the pre-configured random access. And acquiring, according to the third random access configuration resource, a competitive randomization Access random access preamble resources, time domain resources, and frequency domain resources.
  • the frequency domain resource used for random access may be preferentially acquired according to the pre-configured resource.
  • the transmitter 1103 is configured to receive the random access preamble resource, the time domain resource, and the frequency domain resource that are sent by the processor, according to the time domain resource and the frequency domain resource, to the The base station sends a random access message carrying the random access preamble resource to perform competitive random access.
  • the user equipment may send the bearer to the base station according to the time domain resource and the frequency domain resource.
  • the random access message of the random access preamble is randomly accessed.
  • the base station After receiving the random access message, the base station sends a random access response message. Since different UEs may send the same random access preamble (ie, a collision occurs), they will receive the same response message.
  • the UE sends an uplink message to the base station according to the content in the foregoing random access response message, where the message includes the identifier of the UE or a random number (the random number is generated by the user equipment); the base station receives the message and competes.
  • the parsing process is to perform the process of competing when two or more UEs collide, and carry the identifier of the UE that successfully resolves the resolution in the signaling that is subsequently sent to the UE.
  • the UE finds that it matches the identifier or the random number that it has in the received signaling (ie, determines whether the identity or random number of the UE sent by the base station is associated with the identifier of the UE carried by the UE in the uplink message sent to the base station or is random. The number is consistent), if it matches, the random access is successful. Otherwise, the random access fails and the random access procedure needs to be re-established.
  • the processor 1102 is further configured to determine, according to the reference signal configuration, a transmit power of the random access preamble.
  • the transmitter 1103 is specifically configured to: send the random access message to the base station according to the transmit power.
  • the processor 1102 is further configured to determine, according to the carrier indication configuration information, a carrier used to carry the random access preamble.
  • the transmitter 1103 is specifically configured to: send the random access message to the base station by using the carrier.
  • the reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • the base station can allocate additional random access resources to the user equipment by using the second random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 12 is a schematic diagram of a base station according to an embodiment of the present invention.
  • the base station provided by this embodiment includes the following components:
  • the processor 1201 is configured to acquire a random access configuration resource used by the user equipment for performing a random random access, where the random access configuration resource includes a first random access configuration resource and a second random access configuration resource, where The first random access configuration resource and the second random access configuration resource are transmitted to a transmitter.
  • the base station may allocate a random access configuration resource for the UE to perform random access according to the number of access UEs.
  • the random access configuration resource can be indicated by dedicated signaling in addition to the first system message broadcast.
  • the dedicated signaling may be an RRC connection reconfiguration message, or an RRC signaling message, or a MAC message, or a downlink control message.
  • the first random access configuration resource may be included in the dedicated signaling, and the second random access configuration resource may be included in the first system message.
  • the transmitter 1202 is configured to receive the first random access configuration resource and the second random access configuration resource that are sent by the processor, and send the dedicated signaling and the “system message” to the user equipment, where
  • the first signaling request carries the first random access configuration resource
  • the first system message carries the second random access configuration resource
  • the user equipment is configured according to the first random access
  • At least one of the resource and the second random access configuration resource acquires a random access preamble resource, a time domain resource, and a frequency domain resource required for performing a competitive random access.
  • the first random access configuration resource includes at least one of the following: a first frequency domain resource configuration, a first code domain resource configuration, a first time domain resource configuration, a reference signal configuration, and a carrier indication configuration information, where the carrier indication configuration information is used by And the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a transmit power of the random access preamble resource, where the user equipment is configured to carry the carrier information of the random access preamble.
  • the first time domain resource configuration includes at least one of first subframe configuration information and first preamble format configuration information; the first code domain resource configuration includes first root sequence configuration information, and a first zero correlation domain offset At least one of configuration information; the first frequency domain resource configuration includes a first frequency resource configuration.
  • the second random access configuration resource includes at least one of the following: a second frequency domain resource configuration, a second code domain resource configuration, and a second time domain resource configuration.
  • the second time domain resource configuration includes second subframe configuration information, second preamble format configuration information, and the second code domain resource configuration includes a second root sequence configuration information, and the second related domain offset configuration Information;
  • the second frequency domain resource configuration includes second frequency resource configuration information.
  • the random access resource that can be obtained is obtained according to the first random access configuration resource in the dedicated signaling.
  • the first subframe configuration information is included in the dedicated signaling
  • the time domain resource required for random access may be acquired according to the first subframe configuration information
  • the dedicated signaling includes the first sequence configuration information And the first zero correlation domain offset configuration information
  • the preamble information required for performing random access may be obtained according to the first root sequence configuration information and the first zero correlation domain offset configuration information
  • the dedicated signaling includes the first
  • the root sequence configuration information, but not including the first zero correlation domain offset configuration information may be obtained according to the first root sequence configuration information and the second zero correlation domain offset configuration information in the first system message.
  • the required preamble information if the dedicated zero signaling includes the first zero correlation domain offset configuration information but does not include the first root sequence configuration information, may be configured according to the first zero correlation domain offset configuration information and the first system message
  • the second sequence configuration information is used to obtain the preamble information required for the random access. If the first frequency resource configuration information is included in the dedicated signaling, the frequency required for the random access may be obtained according to the first frequency resource configuration information. Domain resource.
  • the reference signal configuration is included in the dedicated signaling, where the reference signal configuration may be a channel state information reference symbol or a reference symbol used for radio resource management measurement or a reference signal configuration for time-frequency tracking
  • the channel state information reference signal configuration determines the transmit power of the random access preamble; if the dedicated signaling includes the carrier indication configuration information, the carrier for carrying the random access preamble may be determined according to the carrier indication configuration information.
  • an additional available preamble sequence can be provided to provide an extra 64 preamble sequences through the first system message.
  • the network side may provide an additional preamble sequence to the user equipment by defining a new IE.
  • the preamble sequence added in the new IE may be generated according to the root sequence information indicated by the first system message or the dedicated RRC signaling message.
  • the remaining consecutive root sequence indices can be used to generate the remaining preamble sequences.
  • the transmitter 1202 is specifically configured to: send the random access configuration resource to the base station to which the user equipment belongs, where the base station generates the first signaling and the first system according to the random access configuration resource And sending the first signaling and the first system message to the user equipment; or sending the random access configuration resource to the network management center 0AM, where the 0AM is used to belong to the user equipment
  • the base station sends the random access configuration resource, where the base station generates the first signaling and the first system message according to the random access configuration resource, and the first signaling and the The first "system message" is sent to the user equipment.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station can also send the PRACH to the 0AM. After the configuration information is received, the 0AM can indicate, according to the configuration information, the configuration resource that the micro base station accesses the UE for performing random access.
  • the base station further includes a receiver 1203, and the receiver 1203 is configured to receive, by the user equipment, the acquired by the at least one of the first random access configuration resource and the second random access configuration resource.
  • the random access preamble resource required for contention random access; the processor 1201 is further configured to determine whether a random access resource collision occurs in the random access preamble resource, and send random access to the user equipment Response message
  • the user equipment After transmitting the dedicated signaling and the first system message to the user equipment, the user equipment acquires a random access preamble resource, a time domain resource, and a frequency domain required for performing random access according to the dedicated signaling and the first system message.
  • the resource sends a random access preamble resource to the network side.
  • the network side After receiving the preamble resource, the network side can determine whether the preamble resource has a random access resource collision, and send a random access response message to the user equipment.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the dedicated signaling, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • FIG. 13 is a schematic diagram of another base station according to an embodiment of the present invention.
  • the base station provided by this embodiment includes the following components:
  • the processor 1 301 is configured to acquire a random access configuration resource for the user equipment to perform a random random access, where the random access configuration resource includes a third random access configuration resource, and the third random access Configure the resource transfer to the sender.
  • the base station may allocate a random access configuration resource for the UE to perform random access according to the number of accessing the UE.
  • the random access configuration resource may be indicated by a second system message in addition to the first system message broadcast.
  • the sender 1 302 is configured to receive the third random access configuration resource that is sent by the processor, and send a second system message to the user equipment, where the second system message carries the third random access And a configuration resource, where the user equipment acquires a random access preamble resource and a time domain resource required for performing a competitive random access according to the third random access configuration resource and the pre-configured random access configuration resource. And frequency domain resources.
  • the third random access configuration resource includes at least one of the following: a third frequency domain resource configuration, a third code domain resource configuration, and a third time domain resource configuration; the third frequency domain resource configuration, and the third code domain resource At least one of the configuration and the third time domain resource configuration is different from the corresponding resource configuration in the second frequency domain resource configuration, the second code domain resource configuration, and the second time domain resource configuration carried in the first system message.
  • the third time domain resource configuration includes at least one of a third subframe configuration information and a third preamble format configuration information, where the third code domain resource configuration includes a third root sequence configuration information, and a third zero correlation domain. At least one of offset configuration information; the third frequency domain resource configuration includes a third frequency resource configuration.
  • the third random access configuration resource may further include: a reference signal configuration, and carrier indication configuration information.
  • the carrier indication configuration information is used to indicate that the user equipment carries the carrier information of the random access preamble; the reference signal is configured to instruct the user equipment to perform path loss estimation and determine a random access preamble resource. Transmit power.
  • the transmitter 1 to 302 is specifically configured to: send the random access configuration resource to a base station to which the user equipment belongs, where the base station generates the second system message according to the random access configuration resource, and Sending the second system message to the user equipment; or sending the random access configuration resource to the network management center 0AM, where the 0AM sends the random access configuration resource to the base station to which the user equipment belongs, The base station generates the second system message according to the random access configuration resource, and sends the second system message to the user equipment.
  • the macro base station may send configuration information for the PRACH to the micro base station through the interface between the macro base station and the micro base station, and the micro base station may, according to the configuration information, instruct the access UE to perform random connection according to the configuration information. Incoming configuration resources.
  • the macro base station can also send the PRACH to the 0AM. After the configuration information is received, the 0AM can indicate, according to the configuration information, the configuration resource that the micro base station accesses the UE for performing random access.
  • the base station further includes a receiver 1 303, and the receiver 1303 is configured to receive the contention obtained by the user equipment according to the third random access configuration resource and the pre-configured random access configuration resource.
  • the user equipment acquires the random access preamble resource, the time domain resource, and the frequency domain resource required for the random access according to the second system message and the pre-configured resource.
  • the network side may receive the random access preamble resource required for the competitive random access obtained by the user equipment according to the third random access configuration resource and the pre-configured random access access configuration resource, and determine the random Whether a random access resource collision occurs in the access preamble resource, and a random access response message is sent to the user equipment.
  • the base station can allocate additional random access resources to the user equipment by using the random access configuration resource in the second system message, thereby increasing the random access channel capacity and reducing the time delay for the user equipment to perform random access.
  • RAM random access memory
  • ROM read only memory
  • electrically programmable ROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or any other form of storage known in the art. In the medium.

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Abstract

La présente invention concerne un procédé et un appareil d'accès aléatoire compétitif.Ledit procédé comprend les étapes consistant à recevoir une signalisation dédiée et un premier message système envoyés par une station de base, la signalisation dédiée portant une première ressource de configuration d'accès aléatoire, et le premier message système portant une seconde ressource de configuration d'accès aléatoire; en fonction de la première et/ou de la seconde ressource de configuration d'accès aléatoire, acquérir une ressource de préambule d'accès aléatoire, une ressource de domaine temporel et une ressource de domaine fréquentiel requises pour mettre en oeuvre un accès aléatoire compétitif; et en fonction de la ressource de domaine temporel et de la ressource de domaine fréquentiel, envoyer un message d'accès aléatoire portant la ressource de préambule d'accès aléatoire à la station de base de façon à mettre en oeuvre un accès aléatoire compétitif.Les modes de réalisation de la présente invention permettent d'améliorer la capacité d'un canal d'accès aléatoire, et de réduire le temps de propagation pour un équipement utilisateur afin de mettre en oeuvre un accès aléatoire.FIG.
PCT/CN2013/070851 2013-01-22 2013-01-22 Procédé et appareil d'accès aléatoire compétitif WO2014113925A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN107623947A (zh) * 2016-07-14 2018-01-23 展讯通信（上海）有限公司 基站、用户设备及其随机接入方法
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