WO2015010332A1 - 一种数据传输的方法、设备与系统 - Google Patents

一种数据传输的方法、设备与系统 Download PDF

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Publication number
WO2015010332A1
WO2015010332A1 PCT/CN2013/080221 CN2013080221W WO2015010332A1 WO 2015010332 A1 WO2015010332 A1 WO 2015010332A1 CN 2013080221 W CN2013080221 W CN 2013080221W WO 2015010332 A1 WO2015010332 A1 WO 2015010332A1
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WO
WIPO (PCT)
Prior art keywords
preamble
base station
channel resource
user equipment
subframe
Prior art date
Application number
PCT/CN2013/080221
Other languages
English (en)
French (fr)
Inventor
黄曲芳
张健
曾清海
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 BR112016001517-7A priority Critical patent/BR112016001517B1/pt
Priority to EP13889900.0A priority patent/EP3016467B1/en
Priority to KR1020167004449A priority patent/KR101783278B1/ko
Priority to KR1020177026687A priority patent/KR20170110176A/ko
Priority to CN201380002537.5A priority patent/CN105264997B/zh
Priority to JP2016528287A priority patent/JP6216052B2/ja
Priority to PCT/CN2013/080221 priority patent/WO2015010332A1/zh
Publication of WO2015010332A1 publication Critical patent/WO2015010332A1/zh
Priority to US15/006,673 priority patent/US9900912B2/en
Priority to US15/891,862 priority patent/US10791575B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/004Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device and system for data transmission. Background technique
  • CA Carrier Aggregation
  • UE User Equipment
  • CCs Component Carriers
  • the CA technology enables multiple base stations to simultaneously bear the transmission of user equipment data services.
  • the UEs in the common coverage area of multiple adjacent base stations can aggregate the cells provided by multiple base stations, and multiple base stations simultaneously bear user equipment data.
  • the transmission of traffic, in this process requires the UE to maintain data synchronization with multiple base stations.
  • the specific implementation of the CA technology is as follows:
  • the initial uplink transmission time advancement TA (TA) is obtained between the UE and the base station by random access, and then the base station continuously receives the uplink data according to the time. Adjusting the uplink transmission of the UE.
  • the UE sends a preamble to the base station.
  • the preamble sent by the UE in a cell is calculated according to the cell identifier and the parameters included in the broadcast message.
  • the dedicated preamble is uniformly allocated and used by the base station.
  • the common preamble is selected and used by the UE.
  • the UE After the UE decides to initiate random access, it randomly selects one from the common preamble resource pool and sends it to the base station. If the UE has uplink data to transmit, the UE selects a preamble to initiate random access based on contention. If the base station has downlink data to transmit, the base station selects a dedicated preamble for the UE, and notifies the UE of the dedicated preamble. The UE initiates random access. Since this preamble is dedicated, it does not collide with other UEs. This random access is called non-contention random access.
  • the prior art is directed to carrier aggregation of cells in a single base station, but involves a carrier aggregation scenario between multiple base stations. How to implement random access of user equipments and different base stations is a problem that the industry is expected to solve.
  • Embodiments of the present invention provide a data transmission method, device, and system, which can be implemented
  • the user equipment performs random access simultaneously with multiple base stations, which reduces the delay of random access of the user equipment and multiple base stations, and accelerates the process of random access of the user equipment to multiple base stations.
  • the first aspect provides a data transmission method, where the user equipment acquires a first preamble and a second preamble, where the first preamble corresponds to a cell set of a primary time advance group PTAG of the first base station, and the second preamble corresponds to a second a set of cells of the secondary time advance group STAG of the base station;
  • the user equipment sends the first preamble to the first base station, and is configured to initiate random access according to the first front guiding to the first base station;
  • the user equipment sends the second preamble to the second base station, where the second base station initiates random access according to the second front.
  • the method further includes:
  • the user equipment acquires a first channel resource, where the first channel resource is a physical random access channel PRACH resource of the first base station, and the first channel resource includes a subframe to be used to carry the first preamble Collection
  • the user equipment acquires a second channel resource, where the second channel resource is a physical random access channel resource of the second base station, and the second channel resource includes a subframe set to be used to carry the second preamble .
  • the acquiring, by the user equipment, the first channel resource includes:
  • the acquiring, by the user equipment, the second channel resource includes:
  • the subframe set to be used for carrying the first preamble in the first channel resource and the subframe set to be used to carry the second preamble in the second channel resource are different in time slot.
  • the user equipment sends the first preamble to the first base station and the second preamble to the second base station, where the method includes:
  • the user equipment sends the second preamble to the second base station by using the subframe that carries the second preamble.
  • the method further includes:
  • the user equipment delays sending the first preamble to the first base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the user equipment delays sending the second preamble to the second base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the user equipment delays sending the time of the first preamble corresponding to the contention of the random access to the first base station to other subframes, so as to facilitate the first
  • the transmission time of the preamble does not overlap with the transmission time of the second preamble
  • the user equipment delays sending the time of the second preamble corresponding to the contention of the random access to the second base station to other subframes, so as to facilitate the first
  • the transmission time of the preamble does not overlap with the transmission time of the second preamble
  • the user equipment delays sending the first preamble to the first base station Time to the next subframe of the subframe to be used for carrying the first preamble, so that the transmission time of the first preamble does not overlap with the transmission time of the second preamble;
  • a time in the second channel resource that is to be used to carry the next subframe of the first preamble is earlier than a subframe in the first channel resource to be used to carry the second preamble
  • the user equipment delays sending the second preamble to the second base station to a next subframe of a subframe to be used for carrying the second preamble, so as to facilitate the first
  • the transmission time of the preamble does not overlap with the transmission time of the second preamble.
  • the user equipment sends the first preamble to the first base station and the second preamble to the second base station, which specifically includes:
  • the user equipment selects a subframe that carries the first preamble in the first channel resource and a subframe that carries the second preamble in the second channel resource, where the subframe that carries the first preamble
  • the sum of the transmit power and the transmit power of the subframe carrying the second preamble is less than or equal to the maximum transmit power of the user equipment
  • the user equipment sends the second preamble to the second base station by using the subframe that carries the second preamble.
  • the user equipment sends the first preamble to the first base station, and specifically includes:
  • the user equipment delays sending a message corresponding to the first preamble to the first base station a time of three to other subframes, where the sending time of the message 3 corresponding to the first preamble and the sending time of the second preamble do not overlap;
  • the user equipment cancels the sending of the message three, where the message three corresponds to the first preamble;
  • the user equipment sends the second preamble to the second base station, which specifically includes:
  • the user equipment delays sending the message corresponding to the second preamble to the second base station to another subframe, where the sending time of the message 3 corresponding to the second preamble and the first preamble are The sending time does not overlap;
  • the user equipment cancels the sending of the message three, and the message three corresponds to the second preamble.
  • the user equipment sends the The first preamble and the sending of the second preamble to the second base station include:
  • a method for data transmission including:
  • the first base station performs random access with the user equipment according to the first preamble
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • the method before the receiving, by the base station, the first preamble or the second preamble sent by the user equipment, the method further includes:
  • the first base station is configured with a first channel resource, where the first channel resource is a physical random access channel (PRACH) resource of the first base station, and the first channel resource includes a child to be used to carry the first preamble Frame collection.
  • PRACH physical random access channel
  • the method further includes:
  • the base station sends a system broadcast or dedicated signaling to the user equipment, where the system broadcast includes the first channel resource;
  • the subframe set to be used to carry the second preamble and the subframe set to be used to carry the first preamble in the second channel resource of the second channel resource acquired by the user equipment are in a time slot. It is different.
  • the first base station configuring the first channel resource specifically: the first base station Receiving a second channel resource sent by the second base station; The first base station configures the first channel resource for the user equipment according to the second channel resource.
  • the method further includes:
  • the first base station sends, to the user equipment, a part of the first channel resource that does not intersect with the second channel resource, where a part of the first channel resource that does not intersect with the second channel resource is
  • the set of subframes to be used for carrying the first preamble and the set of subframes to be used for carrying the second preamble in the second channel resource are different in time slots.
  • a third aspect provides a user equipment, including a processing unit and a sending unit, where the processing unit is configured to acquire a first preamble and a second preamble, where the first preamble corresponds to a cell set of a primary time advance group PTAG of the first base station.
  • the second preamble corresponds to a set of STAG cells of the secondary time advance group of the second base station;
  • the sending unit is configured to send, to the first base station, the first preamble acquired by the processing unit;
  • the processing unit is further configured to initiate random access according to the first pre-direction to the first base station;
  • the sending unit is further configured to send, to the second base station, the second preamble acquired by the processing unit;
  • the processing unit is further configured to initiate random access according to the second pre-direction to the second base station.
  • the user equipment further includes a receiving unit
  • the receiving unit is configured to acquire a first channel resource, where the first channel resource is a physical random access channel (PRACH) resource of the first base station, where the first channel resource is to be used to carry the first preamble Collection of subframes;
  • PRACH physical random access channel
  • the receiving unit is further configured to acquire a second channel resource, where the second channel resource is a physical random access channel resource of the second base station, where the second channel resource is to be used to carry the second preamble Subframe collection.
  • the second channel resource is a physical random access channel resource of the second base station, where the second channel resource is to be used to carry the second preamble Subframe collection.
  • the receiving unit is specifically configured to receive, by using a system broadcast message, the first channel resource sent by the first base station;
  • the receiving unit is specifically configured to receive, by using dedicated signaling, the second channel resource sent by the second base station;
  • the subframe set to be used for carrying the first preamble in the first channel resource and the subframe set to be used to carry the second preamble in the second channel resource are different in time slot.
  • the processing unit is specifically configured to determine, in the first channel resource, a subframe that carries the first preamble and a subframe that carries the second preamble in the second channel resource, where the first preamble is sent. The time does not overlap with the transmission time of the second preamble;
  • the sending unit is configured to send the first preamble to the first base station by using a subframe that is determined by the processing unit and that carries the first preamble;
  • the sending unit is specifically configured to send the second preamble to the second base station by using a subframe that is determined by the processing unit and that carries the second preamble.
  • the processing unit is further configured to delay sending the first preamble to the first base station to other sub-times. a frame, so that the transmission time of the first preamble does not overlap with the transmission time of the second preamble;
  • the processing unit is further configured to delay sending the second preamble to the second base station to another subframe, so that the sending time of the first preamble and the sending time of the second preamble are not delivered.
  • the processing unit is specifically used to delay the location Transmitting, by the first base station, the time of the first preamble corresponding to the contention of the random access to the other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processing unit is further configured to delay sending the time of the second preamble corresponding to the contention of the random access to the second base station to another subframe, so that The transmission time of the first preamble does not overlap with the transmission time of the second preamble;
  • the processing unit is specifically configured to delay sending the first preamble to the first base station to a next subframe of a subframe to be used to carry the first preamble, so as to facilitate The sending time of the first preamble does not overlap with the sending time of the second preamble;
  • a time in the second channel resource that is to be used to carry the next subframe of the first preamble is earlier than a subframe in the first channel resource to be used to carry the second preamble
  • the processing unit is specifically configured to delay sending the second preamble to the second base station to a next subframe of a subframe to be used for carrying the second preamble, so as to facilitate The transmission time of the first preamble does not overlap with the transmission time of the second preamble.
  • the processing unit is configured to: select, in the first channel resource, a subframe that carries the first preamble and a subframe that carries the second preamble in the second channel resource, where the bearer is first The sum of the transmit power of the preamble subframe and the transmit power of the subframe carrying the second preamble is less than or equal to the maximum transmit power of the user equipment;
  • the sending unit is specifically configured to send the first preamble to the first base station by using a subframe that is selected by the processing unit and that carries the first preamble;
  • the sending unit is specifically configured to carry the second preamble selected by the processing unit
  • the subframe transmits the second preamble to the second base station.
  • the processing unit is specifically configured to delay sending the message corresponding to the first preamble to the first base station to another subframe, where the sending time and the message corresponding to the first preamble are three The sending time of the second preamble does not overlap;
  • the processing unit is specifically configured to adjust a transmit power of the subframe that carries the message 3 corresponding to the first preamble, where the adjusted bearer carries the subframe corresponding to the message 3 of the first preamble Transmitting power and a sum of transmit powers of the second preamble-bearing subframes in the second channel resource being less than or equal to a maximum transmit power of the user equipment;
  • the processing unit is specifically configured to cancel the sending of the message 3.
  • the message three corresponds to the first preamble;
  • the processing unit is specifically configured to delay sending the message corresponding to the second preamble to the second base station to another subframe, where the sending time and the message corresponding to the second preamble are The sending time of the first preamble does not overlap;
  • the processing unit is specifically configured to adjust a transmit power of the subframe that carries the message 3 corresponding to the second preamble, where the adjusted bearer carries the subframe corresponding to the message 3 of the second preamble Transmitting power and a sum of transmit powers of the first preamble-bearing subframes in the first channel resource being less than or equal to a maximum transmit power of the user equipment;
  • the processing unit is specifically configured to cancel sending the message three, where the message three corresponds to The second preamble.
  • the user equipment according to the third aspect the first or the second possible implementation manner of the third aspect, in a seventh possible implementation manner;
  • the sending unit is specifically configured to send the first preamble acquired by the processing unit to the first base station and the second preamble obtained by the processing unit to the second base station;
  • the sending unit is configured to send, to the second base station, a second preamble acquired by the processing unit, in the process of performing random access by the user equipment;
  • the transmitting unit is configured to send, to the first base station, a first preamble acquired by the processing unit, in a random access process performed by the user equipment and the second base station.
  • a base station in a fourth aspect, includes a receiving unit and an access unit: the receiving unit is configured to receive a first preamble sent by the user equipment, where the first preamble corresponds to the first base station The set of cells of the PTAG in the main time advance group;
  • the access unit is configured to perform random access with the user equipment according to the first preamble received by the receiving unit during a random access process performed by the user equipment and the second base station;
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • the access unit is further configured to configure, by the user equipment, a first channel resource, where the first channel resource is a physical random access channel (PRACH) resource of the base station, and the first channel resource includes a to-be-used A set of subframes of the first preamble.
  • a first channel resource is a physical random access channel (PRACH) resource of the base station, and the first channel resource includes a to-be-used A set of subframes of the first preamble.
  • PRACH physical random access channel
  • the base station further includes a sending unit:
  • the sending unit is configured to send a system broadcast or a dedicated signaling to the user equipment, where the system broadcasts a first channel resource configured by the access unit;
  • the subframe set to be used to carry the second preamble and the subframe set to be used to carry the first preamble in the second channel resource of the second channel resource acquired by the user equipment are in a time slot. It is different.
  • the receiving unit is further configured to receive the second channel resource that is sent by the second base station, where the access unit is further configured to configure the first channel for the user equipment according to the second channel resource that is received by the receiving unit. Resources.
  • the receiving unit is further configured to receive the second channel resource that is sent by the second base station, where the sending unit is further configured to send, to the user equipment, a second channel that is received by the receiving unit in the first channel resource. a portion of the first channel resource to be used for carrying the first preamble and the second channel resource to be used in a portion of the first channel resource that does not intersect the second channel resource
  • the set of subframes carrying the second preamble are different in time slots.
  • a fifth aspect provides a user equipment, where the user equipment includes: at least one processor, a memory, a transmitter, a receiver, and a data bus, where the data bus is used to implement the processor, the memory, the receiver, and the a connection and communication between the transmitters, where the processor is configured to acquire a first preamble and a second preamble by using the receiver, where the first preamble corresponds to a cell set of a primary time advance group PTAG of the first base station, where Determining, by the second preamble, a set of STAG cells corresponding to the secondary time advance group of the second base station;
  • the processor is further configured to send, by using the transmitter, the first preamble to the first base station, where the first base station initiates random access according to the first pre-direction;
  • the processor is further configured to send, by using the transmitter, the second preamble to the second base station, where the second base station initiates random access according to the second front.
  • the processor is further configured to acquire, by using the receiver, a first channel resource, where the first channel resource is the first base station a physical random access channel PRACH resource, where the first channel resource includes a subframe set to be used to carry the first preamble;
  • the processor is further configured to acquire, by the receiver, a second channel resource, the second channel
  • the resource is a physical random access channel resource of the second base station, and the second channel resource includes a subframe set to be used to carry the second preamble.
  • the processor is further configured to receive, by using a system broadcast message received by the receiver, the first channel resource sent by the first base station;
  • the processor is further configured to receive, by using dedicated signaling received by the receiver, the second channel resource sent by the second base station;
  • the subframe set to be used for carrying the first preamble in the first channel resource and the subframe set to be used to carry the second preamble in the second channel resource are different in time slot.
  • the processor is further configured to:
  • the processor is further configured to send, by the transmitter, the first preamble to the first base station by using the subframe that carries the first preamble;
  • the processor is further configured to send, by the transmitter, the second preamble to the second base station by using the subframe that carries the second preamble.
  • the processor is further configured to delay sending the first preamble to the first base station to another subframe, So that the transmission time of the first preamble does not overlap with the transmission time of the second preamble;
  • the processor is further configured to delay sending the second preamble to the second base station to another subframe, so that the sending time of the first preamble does not overlap with the sending time of the second preamble; or,
  • the processor is further configured to delay sending the time of the first preamble corresponding to the contention of the random access to the first base station to other subframes, so as to facilitate The sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processor is further configured to delay sending the time of the second preamble corresponding to the contention of the random access to the second base station to other subframes, so as to facilitate The sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processor is further configured to delay sending the first preamble to the first base station to a next subframe of a subframe to be used for carrying the first preamble, so as to facilitate The sending time of the first preamble does not overlap with the sending time of the second preamble;
  • a time in the second channel resource that is to be used to carry the next subframe of the first preamble is earlier than a subframe in the first channel resource to be used to carry the second preamble
  • the processor is further configured to delay sending the second preamble to the second base station to a next subframe of a subframe to be used for carrying the second preamble, so as to facilitate The transmission time of the first preamble does not overlap with the transmission time of the second preamble.
  • the processor is specifically configured to select a subframe that carries the first preamble in the first channel resource and a subframe that carries the second preamble in the second channel resource, where the first preamble is carried
  • the sum of the transmit power of the subframe and the transmit power of the subframe carrying the second preamble is less than or equal to the maximum transmit power of the user equipment;
  • the processor is further configured to send, by the transmitter, the first preamble to the first base station by using the subframe that carries the first preamble;
  • the processor is further configured to pass, by the transmitter, the subframe that carries the second preamble Transmitting the second preamble to the second base station.
  • the processor is specifically configured to delay sending the message corresponding to the first preamble to the first base station to another subframe, the sending time of the message 3 corresponding to the first preamble, and the The transmission time of the second preamble does not overlap;
  • the processor is specifically configured to adjust, according to a transmit power of a subframe that carries the message 3 corresponding to the first preamble, where the adjusted bearer transmits the subframe corresponding to the message 3 of the first preamble
  • the sum of the power and the transmit power of the subframe carrying the second preamble in the second channel resource is less than or equal to a maximum transmit power of the user equipment
  • the processor is specifically configured to cancel the sending of the message three, where the message three corresponds to the first preamble;
  • the processor is specifically configured to delay sending the message corresponding to the second preamble to the second base station to another subframe, where the sending time of the message 3 corresponding to the second preamble and the The transmission time of the first preamble does not overlap;
  • the processor is specifically configured to adjust a transmit power of a subframe that carries a message 3 corresponding to the second preamble, where the adjusted bearer transmits the subframe corresponding to the message 3 of the second preamble
  • the sum of the power and the transmit power of the subframe in which the first preamble is carried in the first channel resource is less than or equal to the maximum transmit power of the user equipment
  • the processor is specifically configured to cancel the sending of the message 3.
  • the message three corresponds to the second preamble.
  • the processor is specifically configured to send the first preamble to the first base station and the second preamble to the second base station by using the transmitter;
  • the user equipment is configured to perform the random access process with the first base station, where the processor is specifically configured to send the second preamble to the second base station by using the transmitter;
  • a base station includes: at least one processor, a memory, a receiver, and a data bus, where the data bus is used to implement a connection between the processor, the memory, and the receiver, and Communication
  • the processor is configured to receive, by the receiver, a first preamble sent by the user equipment, where the first preamble corresponds to a cell set of a primary time advance group PTAG of the first base station; And performing random access according to the first preamble and the user equipment in a random access process between the user equipment and the second base station;
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • the processor is further configured to configure, by the user equipment, a first channel resource, where the first channel resource is a physical random access channel (PRACH) resource of the base station, and the first channel resource includes a to-be-used The first preamble of the set of subframes.
  • a first channel resource is a physical random access channel (PRACH) resource of the base station, and the first channel resource includes a to-be-used The first preamble of the set of subframes.
  • PRACH physical random access channel
  • the base station further includes a transmitter connected to the data bus;
  • the processor sends a system broadcast or a dedicated signal to the user equipment by using the transmitter, where the system broadcast includes the first channel resource;
  • the second channel resource acquired by the user equipment is to be used to carry the second front
  • the set of pilots is different from the set of subframes in the first channel resource to be used for carrying the first preamble on a time slot.
  • the base station is described in a first possible manner, in a third possible implementation:
  • the processor is further configured to receive, by the receiver, a second channel resource sent by the second base station;
  • the processor is further configured to configure the first channel resource for the user equipment according to the second channel resource.
  • the processor is further configured to receive, by the receiver, a second channel resource sent by the second base station;
  • the processor is further configured to send, by the sender, a part of the first channel resource that does not intersect the second channel resource, where the first channel resource is the second
  • the set of subframes to be used for carrying the first preamble and the set of subframes to be used for carrying the second preamble in the second channel resource are different in time slots in the part where the channel resources are not intersected.
  • the seventh aspect provides a communication system, including at least two base stations and at least one user equipment, where the base station is the foregoing base station, where one base station is used as the first base station, and at least one base station is used as the second base station, and the user equipment is used. For the above user equipment.
  • the user equipment can simultaneously send the preamble used as the random access to multiple base stations, so that the user equipment simultaneously initiates parallel random access to multiple base stations, and reduces The delay of random access by the user equipment and multiple base stations accelerates the process of random access by the user equipment to multiple base stations.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a data transmission method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station apparatus according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a user equipment according to another embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of signaling interaction of a data transmission method according to another embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a data transmission method according to another embodiment of the present invention.
  • FIG. 1 is a schematic diagram of another data transmission method according to another embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing still another principle of a data transmission method according to another embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing another principle of a data transmission method according to another embodiment of the present invention.
  • FIG. 14 is a schematic diagram of signaling interaction of a data transmission method according to another embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a data transmission method according to another embodiment of the present invention.
  • FIG. 16 is a schematic diagram of another data transmission method according to another embodiment of the present invention.
  • the terminal a device that provides voice and/or data connectivity to a user, including a wireless terminal or a wired terminal.
  • the wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, via a wireless access network with one or more cores A mobile terminal that communicates with the heart network.
  • the wireless terminal can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the wireless terminal can be a mobile station (MS), an access point (AP), or a user equipment (UE).
  • MS mobile station
  • AP access point
  • UE user equipment
  • the above terminals are collectively referred to as UEs in various embodiments of the present invention.
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more cells on an air interface.
  • the base station may be a base transceiver station (BTS) in a global system for mobile communications (GSM) or code-division multiple acces (CDMA), or may be a broadband code division.
  • BTS base transceiver station
  • GSM global system for mobile communications
  • CDMA code-division multiple acces
  • a base station in the case of a wideband CDMA (WCDMA) (English: NodeB), or an evolved base station (English: evolutional Node B, BS or e_NodeB) in Long Term Evolution (LTE), or It is a base station in a subsequent evolution network, which is not limited by the present invention.
  • the embodiment of the present invention is applied to a scenario in which a user equipment and a plurality of base stations perform random access in a communication system.
  • the user equipment UE sends a preamble to the base station, and the base station acquires an initial uplink sending time according to the preamble sent by the user equipment.
  • the advance amount TA, the uplink transmission time advance amount used by the user equipment in different cells may be the same or different.
  • a set of multiple cells using the same uplink transmission time is called a Timing Advance Group (TAG), and cells in the time advance group TAG are located on the same base station; different time advance groups may be located in the same base station. It can also be located on different base stations.
  • TAG Timing Advance Group
  • the cell that the user equipment initially accesses is called the primary cell (PCell) of the user equipment, and the other cell is called the secondary cell (SCell).
  • the time-advance group of the primary cell is called the primary time advance group. Timing Advance Group, PTAG), other time advance group 'J is called secondary time alignment group (STAG).
  • PTAG Timing Advance Group
  • STAG secondary time alignment group
  • the base station configures the secondary cell for the user equipment.
  • a user equipment has only one primary cell, but may have multiple secondary cells.
  • the data of all logical channels of the base station where the time advance group is located can be counted by the cell and user equipment on the time advance group. According to transmission. For a logical channel, data can be transmitted as long as the base station has successful random access.
  • an embodiment of the present invention provides a communication system, as shown in FIG. 1, including at least two base stations (a first base station BS1, a second base station BS2) and at least one user equipment UE31, a first base station BS1, and a second
  • the base station BS2 and the user equipment UE31 (the first base station BS1 and the second base station BS2 provide a random access service for the user equipment UE31-UE3k at the same time) together constitute the communication system, wherein the first base station is the base station where the PTAG cell of the user equipment UE31 is located.
  • the second base station is a base station where at least one STAG cell of the user equipment UE31 is located.
  • a user equipment (which can be used as the UE 31-UE3k as shown in FIG. 1) is provided, which is applied to the communication system provided in FIG. 1.
  • the user equipment 2 includes: a processing unit 21 and a sending Unit 11.
  • the processing unit 21 is configured to acquire the first preamble and the second preamble, where the first preamble corresponds to the cell set of the primary time advance group PTAG of the first base station BS1, and the second preamble corresponds to the STAG cell set of the secondary time advance group of the second base station BS2.
  • the transmitting unit 22 is configured to send the first preamble acquired by the processing unit 21 to the first base station BS1.
  • the processing unit 21 is further configured to initiate random access according to the first pre-directed first base station BS1.
  • the transmitting unit 22 is further configured to send the second preamble acquired by the processing unit 21 to the second base station BS2.
  • the processing unit 21 is further configured to initiate random access according to the second front-guided second base station BS2. Further, referring to FIG. 2, the user equipment 2 further includes a receiving unit 23;
  • the receiving unit 23 is configured to acquire a first channel resource, where the first channel resource is a physical random access channel PRACH resource of the first base station, where the first channel resource includes a subframe set to be used to carry the first preamble.
  • the receiving unit 23 is further configured to acquire a second channel resource, where the second channel resource is a physical random access channel resource of the second base station, and the second channel resource includes a subframe set to be used to carry the second preamble.
  • the receiving unit 23 is specifically configured to receive, by using a system broadcast message, a first channel resource sent by the first base station BS1.
  • the receiving unit 23 is specifically configured to receive, by using dedicated signaling, the second message sent by the second base station BS2.
  • Road resources
  • the set of subframes to be used for carrying the first preamble in the first channel resource and the set of subframes to be used for carrying the second preamble in the second channel resource are different in time slot.
  • the second base station when the second channel resource is used only for the user equipment 2 to carry the second preamble, the second base station sends the second channel resource to the user equipment 2 by using dedicated signaling instead of system broadcast, so as to prevent the user equipment from searching for system broadcast. , reducing the energy consumption of user equipment.
  • the processing unit 21 is further configured to determine, in the first channel resource, the subframe that carries the first preamble and the second channel that carries the second preamble, where the first preamble is sent.
  • the time is not overlapped with the sending time of the second preamble.
  • the user equipment sends the first preamble to the first base station BS1 through the first frame structure, and sends the second preamble to the second base station BS2 through the second frame structure.
  • the sending unit 23 is specifically configured to send the first preamble to the first base station by using the subframe that carries the first preamble determined by the processing unit 21;
  • the sending unit 23 is specifically configured to send the second preamble to the second base station by using the subframe that carries the second preamble determined by the processing unit 21.
  • subframe 2 in the first frame structure, subframe 2, subframe 5, and subframe 8 are subframes having a first channel resource, and subframe 2 is the earliest appearance.
  • a subframe having a first channel resource in a second frame structure, a subframe 2, a subframe 4, and a subframe 6 are subframes having a second channel resource, and subframe 2 is an earliest appearance having a second channel resource. Subframe.
  • the sending time of the first preamble overlaps with the sending time of the second preamble, and specifically includes two cases:
  • the first subframe having the first channel resource in the first frame structure and the first subframe having the second channel resource in the second frame structure are located in the same time slot, as shown in FIG. 3( a ),
  • the first preamble is located in the subframe 2 of the first frame structure
  • the second preamble is located in the subframe 2 of the second frame structure.
  • the transmission time of the subframe 1 of the first frame structure is 2-3
  • the second frame structure is The transmission time of subframe 1 is 2-3.
  • the first subframe having the first channel resource in the first frame structure and the first subframe having the second channel resource in the second frame structure are located in different time slots, but a certain preamble occupies more than one subframe.
  • the occupied subframe is in the same time slot as the subframe in which the other preamble is located, as shown in the figure
  • the first preamble is located in the subframe 2 of the first frame structure
  • the second preamble is located in the subframe 1 of the second frame structure
  • the transmission time of subframe 2 is 2-3
  • the transmission time of subframe 1 of the second frame structure is 1-3.
  • the transmission time of the first preamble does not overlap with the transmission time of the second preamble.
  • the processing unit 21 delays sending the time of one of the first preamble and the second preamble to other subframes.
  • the processing unit 21 delays sending the first preamble to the first base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble, as shown in FIG. 3( a).
  • the first preamble and the second preamble are both located in the subframe 1, the first preamble may be deferred to the subframe 5 or the subframe 8, wherein the delay to the subframe 5 is delayed to be delayed to the delay of the subframe 8 ;
  • the processing unit 21 delays sending the second preamble to the second base station to other subframes, so that the transmission time of the first preamble does not overlap with the transmission time of the second preamble, as shown in FIG. 3( a ), when the first When the preamble and the second preamble are both located in the subframe 2, the second preamble may be deferred to the subframe 4 or the subframe 6, wherein the delay to the subframe 4 is lower than the delay to the subframe 6; or
  • the processing unit 21 delays transmitting the time of the first preamble corresponding to the contention of the random access to the first base station to other subframes, so as to facilitate the transmission time of the first preamble and the second preamble.
  • the transmission time does not overlap.
  • the first preamble can be deferred to subframe 5 or subframe 8, where, delay to sub The delay of frame 5 is lower than the delay delayed to subframe 8;
  • the processing unit 21 delays transmitting the time of the second preamble corresponding to the contention of the random access to the second base station to other subframes, so as to facilitate the transmission time of the first preamble and the second preamble.
  • the transmission time does not overlap.
  • the second preamble can be deferred to the subframe 4 or the subframe 6. In the delay, the delay to subframe 4 is lower than the delay to subframe 6;
  • the processing unit 21 delaying sending the first preamble time to the other subframes to the first base station, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processing unit 21 delaying the sending of the second preamble to the second subframe to the other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble, specifically, as shown in FIG.
  • the next subframe of the subframe carrying the first preamble is the subframe 5 of the first frame structure
  • the next subframe of the subframe to be used for carrying the second preamble is the subframe 4 of the second frame structure, and then the postponed
  • the processing unit 21 delays the occurrence of the subframe in which the subframe is present later. For example, as shown in FIG. 3 (b), the second preamble is located in the subframe 1, and the first preamble is located in the subframe 2, and the first preamble is delayed to the subframe 5.
  • the processing unit 21 is specifically configured to delay sending the message corresponding to the first preamble to the first subframe to the other subframes, and the sending time of the message 3 corresponding to the first preamble and the sending time of the second preamble are not overlapped;
  • the processing unit 21 is specifically configured to adjust a transmit power of a subframe that carries the message 3 corresponding to the first preamble, where the adjusted bearer corresponds to the transmit power of the subframe of the first preamble message 3 and the second channel resource carries the second frame.
  • the sum of the transmit powers of the preamble subframes is less than or equal to the user equipment Maximum transmit power;
  • the processing unit 21 is specifically configured to cancel the sending of the message 3.
  • the message 3 corresponds to the first preamble; when the sending time of the message 3 corresponding to the second preamble overlaps with the sending time of the first preamble:
  • the processing unit 21 is specifically configured to delay sending the message corresponding to the second preamble to the second base station to another subframe, and the sending time of the message 3 corresponding to the second preamble and the sending time of the first preamble are not overlapped;
  • the processing unit 21 is specifically configured to adjust a transmit power of a subframe that carries the message 3 corresponding to the second preamble, where the adjusted bearer corresponds to a transmit power of a subframe of the second preamble message 3 and a first bearer in the first channel resource
  • the sum of the transmit powers of the preamble subframes is less than or equal to the maximum transmit power of the user equipment;
  • the processing unit 21 is specifically configured to cancel the sending of the message three, and the message three corresponds to the second preamble. Further, the sending unit 22 simultaneously sends the first preamble acquired by the processing unit 21 to the first base station BS1 and the second preamble obtained by the processing unit 21 to the second base station BS2;
  • the transmitting unit 11 is specifically configured to send the second preamble acquired by the processing unit 21 to the second base station BS2 during the random access process of the user equipment 2 and the first base station BS1.
  • the transmitting unit 11 is specifically configured to send the first preamble acquired by the processing unit 21 to the first base station BS1 during the random access process performed by the user equipment 2 and the second base station BS2.
  • the user equipment provided by the embodiment of the present invention sends a preamble used as a random access to multiple base stations, so that the user equipment initiates parallel random access to multiple base stations, and reduces random access of the user equipment and multiple base stations.
  • the delay accelerates the process of random access by user equipment to multiple base stations.
  • a base station 4 is applied to a first base station BS1 and a second base station BS2 in the communication system provided in FIG. 1, wherein the first base station BS1
  • the structure of the second base station BS2 may be the same, including: a receiving unit 41 and an access unit 42.
  • the receiving unit 41 of the first base station BS1 is configured to receive a first preamble sent by the user equipment, where the first preamble corresponds to a cell set of the primary time advance group PTAG of the first base station BS1.
  • the access unit 42 is configured to perform random access with the user equipment according to the first preamble received by the receiving unit 41.
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • the access unit 42 is further configured to configure a first channel resource for the user equipment, where the first channel resource is a physical random access channel PRACH resource of the base station, and the first channel resource includes a subframe set to be used to carry the first preamble .
  • the base station 4 further includes a sending unit 43;
  • the sending unit 43 is configured to send system broadcast or dedicated signaling to the user equipment, where the system broadcast includes the first channel resource configured by the access unit 42;
  • the subframe set to be used to carry the second preamble in the second channel resource acquired by the user equipment is different from the subframe set to be used to carry the first preamble in the first channel resource.
  • the receiving unit 41 of the first base station is further configured to receive the second channel resource sent by the second base station;
  • the access unit 42 is further configured to configure the first channel resource for the user equipment according to the second channel resource received by the receiving unit 41.
  • the base station can prevent the subframes of the first channel resource and the second channel resource from being located in the same time slot, and the user equipment is prevented from setting the first preamble and the second preamble in the same subframe. In this case, the workload of the user equipment is reduced.
  • the receiving unit 41 of the first base station is further configured to receive the second channel resource sent by the second base station;
  • the sending unit 43 is further configured to send, to the user equipment, a part of the first channel resource that does not intersect with the second channel resource received by the receiving unit 41, where the part of the first channel resource that does not intersect with the second channel resource is to be used for carrying
  • the set of subframes of the first preamble and the set of subframes of the second channel resource to be used for carrying the second preamble are different in time slots. Since the second channel resource is sent to the user equipment through dedicated signaling, the subframe included in the second channel resource can be adjusted according to the first channel resource, regardless of the impact on other user equipment.
  • the base station provided by the embodiment of the present invention can implement random access of the user equipment and multiple base stations simultaneously by including a preamble for the user equipment to initiate random access with the user equipment, and reduce random access of the user equipment and multiple base stations.
  • the delay accelerates the process of random access by user equipment to multiple base stations.
  • an embodiment of the present invention further provides a user equipment 5, which is applied to the communication system provided by the foregoing embodiments, and specifically includes a processor 51, a memory 52, a transmitter 53, a receiver 54, and a data bus 55.
  • the data bus 55 is used to implement connection and communication between the processor 51, the memory 52, the receiver 54, and the transmitter 53.
  • the data bus 55 may be an Industry Standard Architecture (ISA) bus, a Periphera 1 Component (PCI) bus, or an Extended Industry Standard Architecture (ESA) bus. .
  • ISA Industry Standard Architecture
  • PCI Periphera 1 Component
  • ESA Extended Industry Standard Architecture
  • the bus 55 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick arrow is used in Figure 5, but it does not mean that there is only one bus or one type of bus.
  • the memory 52 is used to store data or executable program code, where the program code includes computer operating instructions, which may specifically be: an operating system, an application, or the like.
  • the memory 52 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 51 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the transmitter 53 and the receiver 54 are mainly used to implement communication between the devices in this embodiment.
  • the processor 51 is configured to acquire the first preamble and the second preamble through the receiver 54, the first The preamble corresponds to a set of cells of the primary time advance group PTAG of the first base station, and the second preamble corresponds to a set of STAG cells of the secondary time advance group of the second base station;
  • the processor 51 is further configured to send, by using the transmitter 53, a first preamble to the first base station, where the first base station is used to initiate random access according to the first preamble;
  • the processor 51 is further configured to send, by using the transmitter 53, a second preamble to the second base station, to initiate random access according to the second preamble to the second base station.
  • the processor 51 is further configured to acquire, by the receiver, the first channel resource, where the first channel resource is a physical random access channel PRACH resource of the first base station, where the first channel resource includes a to-be-used to carry the first preamble. Subframe set;
  • the processor 51 is further configured to acquire, by the receiver 54, a second channel resource, where the second channel resource is a physical random access channel (PRACH) resource of the second base station, and the second channel resource comprises a set of subframes to be used for carrying the second preamble.
  • PRACH physical random access channel
  • the processor 51 is further configured to receive, by using a system broadcast message received by the receiver, the first channel resource sent by the first base station;
  • the processor 51 is further configured to receive, by using dedicated signaling received by the receiver, the second channel resource sent by the second base station;
  • the subframe set to be used to carry the first preamble in the first channel resource and the subframe set to be used to carry the second preamble in the second channel resource are different in the time slot.
  • the processor 51 is further configured to:
  • the processor 51 is further configured to: Transmitting, by the transmitter 53, the first preamble to the first base station by using a subframe carrying the first preamble;
  • the processor 51 is further configured to send, by the transmitter 53, a second preamble to the second base station by using a subframe carrying the second preamble.
  • the processor 51 is further configured to delay sending the first preamble to the first base station to other subframes, so as to facilitate the first preamble.
  • the sending time does not overlap with the sending time of the second preamble;
  • the processor 51 is further configured to delay sending the second preamble to the second base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processor 51 is further configured to delay sending the first preamble corresponding to the contention of the random access to the first base station to other subframes, so as to facilitate the sending time of the first preamble and The transmission time of the second preamble does not overlap;
  • the processor 51 is further configured to delay sending the second preamble corresponding to the contention of the random access to the second base station to other subframes, so as to facilitate the sending time of the first preamble and The transmission time of the second preamble does not overlap;
  • the processor 5 1 is further configured to delay sending the first preamble to the first base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processor 5 1 is further configured to delay sending the second preamble to the second base station to other subframes, so that the sending time of the first preamble does not overlap with the sending time of the second preamble;
  • the processor 5 1 Postpone the later preamble in which the sub-frame appears.
  • the processor 51 is specifically configured to select a subframe that carries the first preamble in the first channel resource and a subframe that carries the second preamble in the second channel resource, and transmit the transmit power and the bearer of the subframe that carries the first preamble.
  • the sum of the transmit powers of the subframes of the second preamble is less than or equal to the maximum transmit power of the user equipment;
  • the processor 51 is further configured to send, by the transmitter 53, the subframe that carries the first preamble to the first base station. Send the first preamble;
  • the processor 51 is further configured to send the second preamble to the second base station via the transmitter carrying the second preamble.
  • the processor 5 is specifically configured to delay sending the message corresponding to the first preamble to the first subframe to the other subframes, and the sending time of the message 3 corresponding to the first preamble and the sending time of the second preamble are not overlapped;
  • the processor 5 is specifically configured to adjust a transmit power of a subframe that carries the message 3 corresponding to the first preamble, where the adjusted bearer corresponds to the transmit power of the subframe of the first preamble message 3 and the second channel resource carries the second frame.
  • the sum of the transmit powers of the preamble subframes is less than or equal to the maximum transmit power of the user equipment;
  • the processor 5 is specifically configured to cancel the sending of the message 3, and the message 3 corresponds to the first preamble; when the sending time of the message 3 corresponding to the second preamble overlaps with the sending time of the first preamble:
  • the processor 5 is specifically configured to delay sending the message corresponding to the second preamble to the second base station to other subframes, and the sending time of the message 3 corresponding to the second preamble and the sending time of the first preamble are not overlapped;
  • the processor 5 is specifically configured to adjust a transmit power of a subframe that carries the message 3 corresponding to the second preamble, where the adjusted bearer corresponds to a transmit power of a subframe of the second preamble message 3 and a first bearer in the first channel resource.
  • the sum of the transmit powers of the preamble subframes is less than or equal to the maximum transmit power of the user equipment;
  • the processor 51 is specifically configured to cancel the sending of the message three, and the message three corresponds to the second preamble. Further, the processor 51 is specifically configured to send the first preamble to the first base station and the second preamble to the second base station by using the transmitter 53; or,
  • the processor 51 is specifically configured to send the second preamble to the second base station by using the transmitter 53 during the random access process between the user equipment and the first base station;
  • the processor 51 is specifically configured to send the first preamble to the first base station by using the transmitter 53.
  • the user equipment provided by the embodiment of the present invention simultaneously sends a preamble used as a random access to multiple base stations, so that the user equipment simultaneously initiates parallel random access to multiple base stations, and reduces the randomness of the user equipment and multiple base stations.
  • the delay of access accelerates the process of random access by user equipment to multiple base stations.
  • the embodiment of the present invention further provides a base station 6 applied to a base station (refer to the first base station BS1 and the second base station BS2 in FIG. 1) in the communication system provided by the foregoing embodiments, the first base station BS1 and the second base station.
  • the BS2 is identical in structure, and specifically includes a processor 61, a memory 62, a receiver 64, and a data bus 65.
  • the data bus 65 is used to implement connection and communication between the processor 61, the memory 62, and the receiver 64.
  • the data bus 65 may be an Industry Standard Architecture (ISA) bus, a Periphera 1 Component (PCI) bus, or an Extended Industry Standard Architecture (ESA) bus. .
  • ISA Industry Standard Architecture
  • PCI Periphera 1 Component
  • ESA Extended Industry Standard Architecture
  • the bus 65 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick arrow is used in Figure 6, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 62 is used to store data or executable program code, wherein the program code includes computer operation instructions, which may specifically be: an operating system, an application, or the like.
  • the memory 42 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 61 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.
  • the receiver 64 is mainly used to implement communication between devices in this embodiment.
  • the processor 61 is configured to receive, by the receiver 64, a first preamble sent by the user equipment, where the first preamble corresponds to a cell set of the primary time advance group PTAG of the first base station.
  • the processor 61 is further configured to perform random access with the user equipment according to the first preamble during the random access process performed by the user equipment and the second base station.
  • the base station 6 further includes a transmitter 63 connected to the data bus 65.
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • the processor 61 is further configured to configure a first channel resource for the user equipment, where the first channel resource is a physical random access channel PRACH resource of the first base station, and the first channel resource includes a subframe to be used to carry the first preamble set.
  • the base station 6 further includes a transmitter 63 connected to the data bus 65;
  • the processor 61 transmits a system broadcast or dedicated signaling to the user equipment through the transmitter 63, and the system broadcast includes the first channel resource;
  • the subframe set to be used to carry the second preamble in the second channel resource acquired by the user equipment is different from the subframe set to be used to carry the first preamble in the first channel resource.
  • the processor 61 of the base station 6 is further configured to receive, by the receiver 64, the second channel resource sent by the second base station;
  • the processor 61 of the base station 6 is further configured to configure the first channel resource for the user equipment according to the second channel resource.
  • the processor 61 of the base station 6 is further configured to receive, by the receiver 64, the second channel resource sent by the second base station;
  • the processor 61 of the base station 6 is further configured to send, by using the transmitter 63, a part of the first channel resource that does not intersect with the second channel resource, where the part of the first channel resource that does not intersect with the second channel resource is to be used.
  • the set of subframes to be used for carrying the second preamble in the set of subframes carrying the first preamble and the second channel resource are different in time slots.
  • the base station provided by the embodiment of the present invention can obtain the preamble for the user equipment to initiate random access with the user equipment, so that the user equipment and the multiple base stations simultaneously perform random access, and reduce The delay of random access by the user equipment and multiple base stations accelerates the process of random access by the user equipment to multiple base stations.
  • an embodiment of the present invention provides a data transmission method, which is applied to a user equipment provided by an apparatus embodiment of the present invention, and specifically includes the following steps:
  • the user equipment acquires a first preamble and a second preamble, where the first preamble corresponds to a cell set of a primary time advance group PTAG of the first base station, and the second preamble corresponds to a STAG cell set of a secondary time advance group of the second base station.
  • the user equipment sends a first preamble to the first base station, where the user equipment initiates random access according to the first front-end.
  • the user equipment sends a second preamble to the second base station, where the user equipment initiates random access according to the second front-end.
  • the step 702 and the step 703 are performed in the process of the step 702, and the step 702 is performed in the process of the step 702, and the step 702 and the step 703 are performed at the same time.
  • step 701 the method further includes:
  • the user equipment acquires a first channel resource, where the first channel resource is a physical random access channel PRACH resource of the first base station, and the first channel resource includes a subframe set to be used to carry the first preamble.
  • the user equipment acquires the first channel resource, and specifically includes:
  • the user equipment receives the first channel resource sent by the first base station by using a system broadcast message. 701b.
  • the user equipment acquires a second channel resource, where the second channel resource is a physical random access channel resource of the second base station, and the second channel resource includes a subframe set to be used to carry the second preamble.
  • the user equipment acquires the second channel resource, and specifically includes:
  • the user equipment receives the second channel resource sent by the second base station by using dedicated signaling.
  • an embodiment of the present invention provides another data transmission method, which is applied to a base station provided by an apparatus embodiment of the present invention, where the functions of the first base station and the second base station may be the same, and are used only for distinguishing, The method specifically includes the following steps:
  • the first base station receives a first preamble sent by the user equipment.
  • the first preamble corresponds to a cell set of the primary time advance group PTAG of the first base station.
  • the first base station performs random access with the user equipment according to the first preamble.
  • the second preamble required for the user equipment to perform random access with the second base station corresponds to the cell set of the secondary time advance group STAG of the second base station.
  • step 801 the method further includes:
  • the first base station configures a first channel resource, where the first channel resource is a physical random access channel PRACH resource of the first base station, and the first channel resource includes a subframe set to be used for carrying the first preamble.
  • the base station transmits system broadcast or dedicated signaling to the user equipment, and the system broadcast includes the first channel resource.
  • the base station When the base station is the first base station, the base station transmits a system broadcast including the first channel resource; when the base station is the second base station, the base station transmits dedicated signaling including the second channel resource to the user equipment.
  • the base station can use the user equipment to initiate a random access preamble with the user, and implement random access by the user equipment and multiple base stations at the same time, thereby reducing random operation of the user equipment and multiple base stations.
  • the delay of access accelerates the process of random access by user equipment to multiple base stations.
  • a signaling interaction diagram is provided for the user equipment to initiate random access to the base station, where the first base station includes at least A primary time advance group PTAG cell of a user equipment carrier aggregation data transmission, and the second base station includes at least one secondary time advance group STAG cell of user equipment carrier aggregation data transmission.
  • the user equipment is used as a preamble setting for initiating random access with the first base station.
  • a frame structure configured to be used as a preamble for initiating random access with the second base station, in a second frame structure, and transmitting the first frame structure and the second frame structure simultaneously, wherein the first frame structure is sent to the first base station, The two frame structure is transmitted to the second base station.
  • the first base station processes the random access of the user equipment according to the preamble of the primary time advance group PTAG cell
  • the second base station processes the random access of the user equipment according to the preamble of the secondary time advance group STAG cell.
  • the first base station sends a system broadcast that includes the first channel resource, and sends the first control information.
  • the first channel resource is a PRACH resource of the first base station;
  • the first control information includes a common preamble indication parameter or a dedicated preamble indication parameter, and the user equipment generates a public according to the common preamble indication parameter of the first base station and the first channel resource.
  • the first preamble, or the dedicated first preamble is generated according to the dedicated preamble indication parameter of the first base station and the first channel resource.
  • the second base station sends the dedicated signaling including the second channel resource, and sends the second control information.
  • the second channel resource is a PRACH resource of the second base station;
  • the second control information includes a common preamble indication parameter or a dedicated preamble indication parameter, and the user equipment generates a common according to the common preamble indication parameter of the second base station and the second channel resource.
  • the user equipment acquires the first channel resource by using the system broadcast of the first base station, and acquires the second channel resource by using the dedicated signaling of the second base station, where the user equipment generates the first according to the first control information of the first base station and the first channel resource.
  • a preamble generating a second preamble according to the second control information of the second base station and the second channel resource; and placing the first preamble on the first subframe having the first channel resource in the first frame structure, and using the second preamble Placed on the first subframe in the second frame structure with the second channel resource.
  • the channel resource is used to carry a preamble on a subframe in a frame structure.
  • the user equipment When the first base station sends the first control information including the dedicated preamble indication parameter to the user equipment, the user equipment generates a dedicated first preamble according to the dedicated preamble indication parameter and the first channel resource acquired in the first control information. , preparing to initiate non-competition based on the first base station Random access; when the user equipment needs to initiate a contention-based random access to the first base station, the first base station sends first control information including a common preamble indication parameter to the user equipment, and the user equipment according to the first control The common preamble indication parameter and the first channel resource obtained in the information generate a common first preamble, and prepare to initiate contention-based random access to the first base station.
  • the user equipment When the second base station sends the second control information that includes the dedicated preamble indication parameter to the user equipment, the user equipment generates a dedicated second preamble according to the dedicated preamble indication parameter and the second channel resource acquired in the second control information, Preparing to initiate non-contention based random access to the second base station; when the user equipment needs to initiate the contention based random access to the second base station, the second base station sends the second control information including the common preamble indication parameter to the user The device, the user equipment, generates a common second preamble according to the common preamble indication parameter and the second channel resource acquired in the second control information, and prepares to initiate contention-based random access to the second base station.
  • the user equipment sends a first frame structure and a second frame structure, where the first frame structure is sent to the first base station, and the second frame structure is sent to the second base station.
  • the first base station receives the first frame structure, and obtains a first preamble in the first frame structure, so that the user equipment performs random access with the first base station according to the first preamble.
  • the second base station receives the second frame structure, and obtains a second preamble in the first frame structure, so that the user equipment performs random access with the base station according to the second preamble.
  • Step 903 The user equipment sets a first preamble in the first frame structure, and sets a second preamble in the second frame structure, and specifically includes the following solutions:
  • Solution 1 When the transmission time of the first subframe having the first channel resource in the first frame structure and the transmission time of the first subframe having the second channel resource in the second frame structure do not overlap (transmission time) There are two cases of overlapping, and the case is described as an example. For details, see the above embodiment, which is not repeated here.
  • the user equipment places the first preamble in the first frame structure and has the first channel resource.
  • the second preamble is placed on the first subframe in the second frame structure having the second channel resource.
  • the subframe having the first channel resource is the subframe 2, the subframe 5, and the subframe 8 in the first frame structure
  • the subframe having the second channel resource is the second frame structure.
  • the first subframe having the first channel resource is the subframe 2, and the first subframe in the second frame structure having the second channel resource
  • the frame is subframe 4, and the transmission time of the subframe 1 of the first frame structure and the subframe 4 of the second frame structure is not There is overlap, as shown in FIG. 10(b), the user equipment places the first preamble on the first subframe having the first channel resource in the first frame structure, that is, on the subframe 2 of the first frame structure, The second preamble is placed on the first subframe of the second frame structure having the second channel resource, that is, on the fourth frame structure of the subframe.
  • Solution 2 When the transmission time of the first subframe having the first channel resource in the first frame structure overlaps with the transmission time of the first subframe having the second channel resource in the second frame structure, the user equipment Selecting one of the first preamble and the second preamble, and placing another preamble on the first subframe of the frame structure corresponding to the other preamble having the channel resource corresponding to the another preamble; On the next subframe of the channel resource corresponding to the selected preamble.
  • the transmission time of the first subframe having the first channel resource in the first frame structure overlaps with the transmission time of the first subframe having the second channel resource in the second frame structure As shown in FIG.
  • the subframe having the first channel resource is the subframe 2 in the first frame structure, the subframe 5 and the subframe 8, and the subframe having the second channel resource is the second frame structure.
  • the MAC Medium Access Control
  • the first subframe having the first channel resource is subframe 2
  • the first subframe having the second channel resource in the second frame structure is subframe 2
  • the first frame in the first frame structure has the first
  • the subframe of the channel resource and the first subframe of the second frame structure having the second channel resource are located in the same time slot, and the MAC selects one of the first preamble and the second preamble (here, taking the second preamble as an example)
  • placing the first preamble in the first frame structure has the first On the subframe of the channel resource, i.e., on subframe 2 of the first frame structure
  • the second preamble is placed on the next subframe having the second channel resource, i.e., subframe 4 of the second frame structure.
  • the MAC selects one of the first preamble and the second preamble, and may be: selecting a first preamble, placing the second preamble in a next subframe corresponding to the second channel resource; selecting the second preamble, a preamble is placed in a next subframe corresponding to the first channel resource; a dedicated preamble is selected, and the common preamble is placed on a next subframe corresponding to the common preamble corresponding channel resource;
  • Solution 3 when the transmission time of the first subframe having the first channel resource in the first frame structure overlaps with the transmission time of the first subframe having the second channel resource in the second frame structure; Calculating a power of transmitting a first subframe having a first channel resource and a subframe having a second channel resource in a first frame structure in a first frame structure, when transmitting the first frame structure has a first When the power of the first channel structure and the first frame structure of the second frame resource are less than or equal to the threshold transmission power of the user equipment, the user equipment places the first preamble in the first frame structure.
  • the user equipment selects one of the first preamble and the second preamble, and places the other preamble in the frame structure corresponding to the other preamble to have the other preamble A sub-frame corresponding to channel resources; placed on the selected preamble subframe having a next preamble channel resources corresponding to the selected. As shown in FIG.
  • the subframe having the first channel resource in the 1 2 ( a ) is the subframe 2, the subframe 5, and the subframe 8 in the first frame structure, and the subframe having the second channel resource is the first frame.
  • the first subframe having the second channel resource is subframe 2, that is, the first subframe having the first channel resource in the first frame structure and the first one having the second channel resource in the second frame structure
  • the frames are located in the same time slot, and the physical layer of the user equipment calculates the power of transmitting the first subframe having the first channel resource in the first frame structure and the subframe having the second channel resource in the second frame structure, That is, the power of the subframe 2 transmitting the first frame structure and the subframe 1 transmitting the second frame structure is calculated.
  • the MAC places the first preamble at the first In the first subframe of the frame structure having the first channel resource, that is, on the subframe 2 of the first frame structure, placing the second preamble on the first subframe having the second channel resource in the second frame structure That is, on the subframe 2 of the second frame structure; when the power of the subframe 2 transmitting the first frame structure and the subframe 2 of the second frame structure is greater than the threshold transmission power of the user equipment, as shown in FIG.
  • the MAC selects one of the first preamble and the second preamble (here, taking the second preamble as an example) Ming, the MAC places the first preamble on the first subframe having the first channel resource in the first frame structure, that is, on the subframe 2 of the first frame structure, and places the second preamble on the next On the subframe of the two-channel resource, that is, on the subframe 4 of the second frame structure.
  • the MAC selects one of the first preamble and the second preamble, and may be the following method: selecting a second preamble, placing the second preamble in a next subframe corresponding to the second channel resource; selecting the first preamble, A preamble is placed in the next subframe corresponding to the first channel resource; a dedicated preamble is selected, and the common preamble is placed on the next subframe corresponding to the common preamble corresponding channel resource.
  • Solution 4 When the transmission time of the subframe in which the channel resource corresponding to any preamble is located overlaps with the transmission time of the subframe in which the channel resource occupied by the message 3 corresponding to another preamble is located, and the other preamble is public The preamble time; the user equipment calculates the power of the subframe in which the channel resource corresponding to the channel resource corresponding to any preamble is transmitted and the channel resource occupied by the message 3 corresponding to the other preamble, wherein the message 3 may be a common preamble Strive to resolve the logo.
  • the user equipment sets any of the preambles.
  • the message 3 corresponding to the other preamble is placed on the subframe in which the channel resource occupied by the message 3 corresponding to the other preamble is located.
  • the user equipment corresponds to another preamble.
  • the message 3 is placed on the subframe in which the channel resource occupied by the message 3 of the other preamble is located, and any preamble is placed on the next subframe having the channel resource corresponding to the any preamble.
  • the user equipment places any preamble on the subframe in which the channel resource corresponding to any preamble is located, and the message corresponding to the other preamble to the subframe in which the channel resource occupied by the message 3 of the other preamble is located.
  • the first frame structure is sent to the first base station and the second frame structure is sent to the second base station after the transmit power of the message 3 corresponding to the other preamble is decreased.
  • the user equipment only places any preamble on the subframe in which the channel resource corresponding to any preamble is located. That is, when the first preamble is a common preamble, the user equipment sets the message three in the first frame structure, and/or when the second preamble is a common preamble, the user equipment sets the message three in the second frame structure (here The first preamble is a common preamble), when the transmission time of the subframe in which the channel resource corresponding to the second preamble (ie, the second channel resource) is located, and the channel resource occupied by the message 3 corresponding to the first preamble (ie, the first channel resource)
  • the transmission time of the subframe in which it is located overlaps, as shown in Figure 13, where 13 ( a ), the subframe in which the first channel resource is located is subframe 2 in the first frame structure, and the second channel resource is located.
  • the subframe is the subframe 2 in the second frame structure, the subframe 4, the subframe 6 and the subframe 8.
  • the subframe in which the first channel resource is located is the subframe 2 of the first frame structure, and the subframe in which the second channel resource is located
  • the frame is the subframe 2 of the second frame structure, and the subframe in which the first channel resource is located is located in the same time slot as the subframe in which the second channel resource is located.
  • the physical layer of the user equipment calculates the channel resource corresponding to the second preamble.
  • the subframe in which it corresponds corresponds to the first preamble Power three subframes occupied by the message channel resource is located, i.e., the first transmit sub-frame structure of a frame 2 and a second sub-frame structure of the frame power of 2.
  • the MAC places the first preamble message three.
  • the subframe 2 and the second preamble of the first frame structure are placed on the subframe 2 of the second frame structure.
  • the MAC places the second preamble on the second channel resource.
  • Corresponding next subframe that is, subframe 4.
  • the MAC places the first preamble message 3 on the subframe 2 of the first frame structure and the second preamble on the subframe 2 of the second frame structure, and reduces the structure of the first frame.
  • the MAC only places the second preamble on the subframe 2 of the second frame structure, and cancels the transmission of the message 3 of the first preamble.
  • the method further includes:
  • the first base station sends the first channel resource to the second base station.
  • the second base station receives the first channel resource sent by the first base station, and configures the second channel resource for the user equipment according to the first channel resource, where the subframe carried by the second channel resource and the subframe carried by the first channel resource Not the same on the time slot.
  • the second base station receives the first channel resource sent by the first base station, and sends the channel resource that is not intersected with the first channel resource or the part of the disjoint channel resource of the second channel resource to the user equipment.
  • the first base station and the second base station exchange and negotiate the respective PRACH resource configurations, so that the PRACH resources of the two base station cells do not collide, and the first base station sends a system broadcast including the first channel resource to Second level station.
  • the first channel resource is subframe 2, subframe 5, and subframe 8 of the first frame structure.
  • the second base station configures the PRACH available to the UE by using dedicated signaling. Therefore, after receiving the first channel resource sent by the first base station, the second base station may configure the second channel resource for the user equipment according to the first channel resource.
  • the second base station configures only the channel resource that does not conflict with the first channel resource as the second channel resource.
  • the second channel resource is configured as the subframe 4 and the subframe 6 of the second frame structure. The subframes carried by the channel resource configuration that do not conflict with the first channel resource and the subframes carried by the first channel resource are different in time slots.
  • the first base station and the second base station are mutually negotiated to negotiate the respective PRACH resource configuration so that the PRACH resources of the two base station cells do not collide
  • the first channel occurs.
  • the resource occupies each subframe
  • the transmission time of the first subframe having the first channel resource in the first frame structure and the first channel having the second channel resource in the second frame structure optionally, in order to prevent the user equipment from appearing, the transmission time of the first subframe having the first channel resource in the first frame structure and the first channel having the second channel resource in the second frame structure
  • the second base station receives the first channel resource sent by the first base station, and the channel resource that does not intersect the first channel resource in the second channel resource or the part of the disjoint channel resource Send to user device.
  • the first channel resource is the subframe 2 of the first frame structure, the subframe 5, and the subframe 8
  • the second channel resource is the subframe 2 of the second frame structure, the subframe 4, and the subframe 6 .
  • the second base station configures the PRACH available to the UE by using dedicated signaling. Therefore, after receiving the first channel resource sent by the first base station, the second base station does not intersect the first channel resource in the second channel resource.
  • the channel resources ie, subframe 4 and subframe 6) are configured to the UE; or the portion of the channel resource (subframe 4 or subframe 6) that does not intersect with the first channel resource is configured to the UE.
  • a user equipment placing the first preamble on the subframe 2 of the first frame structure according to the first channel resource; placing the second preamble according to the second channel resource configured by the dedicated signaling In subframe 4 (or subframe 6) of the second frame structure, at this time, the transmission time of the first subframe having the first channel resource in the first frame structure and the first frame in the second frame structure have the second The transmission time of the subframe of the channel resource does not overlap.
  • the method, device and system for data transmission provided by the embodiments of the present invention implement parallel random access between the user equipment and the base station by implementing simultaneous random access between the user equipment and the multiple base stations, thereby reducing user equipment and The delay of random access by the base stations improves the speed of data service transmission between the user equipment and multiple base stations.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • the desired program code and any other medium that can be accessed by the computer may suitably be a computer readable medium.
  • any connection may suitably be a computer readable medium.
  • coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared, radio, and microwave Station, server or other remote source transmission then coaxial cable, fiber optic cable, twisted pair,
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

Abstract

本发明的实施例提供一种数据传输的方法、设备与系统,涉及通信领域,能够降低用户设备与多个基站进行随机接入的延迟,加快用户设备向多个基站进行随机接入的过程。该方法包括:用户设备获取对应第一基站的主时间提前组的小区集合的第一前导和对应第二基站的辅时间提前组的小区集合的第二前导,并向第一基站发送第一前导,根据第一前导向第一基站发起随机接入,向第二基站发送第二前导,根据第二前导向第二基站发起随机接入。本发明的实施例应用于用户设备与基站的随机接入。

Description

一种数据传输的方法、 设备与系统 技术领域 本发明涉及通信领域, 尤其涉及一种数据传输的方法、 设备与系统。 背景技术
载波聚合 ( Carrier Aggregation, CA ) 技术支持用户设备 ( User Equipment, UE ) 同时使用多个成员载波 ( Component Carrier, CC ) 进 行上下行通信, 从而实现高速数据传输。 同时, CA技术使得多个基站可 以同时承担用户设备数据业务的传输, 在多个相邻的基站的共同覆盖区 域的 UE可以聚合多个基站所提供的小区, 由多个基站同时承担用户设备 数据业务的传输, 在这个过程中需要 UE与多个基站保持数据同步。
对于 UE与基站的接入过程, CA技术的具体实现为: UE与基站之间 通过随机接入获得初始上行发送时间提前 TA ( Timing Advance, TA ) , 之后基站根据收到上行数据的时间, 不断调整 UE的上行发送, 随机接入 过程中, UE向基站发送一个前导 (preamble) , UE在一个小区内发送的 preamble是根据小区标识、 广播消息中所包含的参数推算出来的, 一个 小区内有 64个可用的 preamble, 分为两类: 专用的前导和公共的前导。 专用的前导是由基站统一分配使用的, 公共的前导是由 UE 自己选择使用 的, UE 决定发起随机接入后, 就从公共前导资源池中随机选择一个, 发 给基站。 如果 UE有上行数据需要传输, UE会自己选择一个 preamble, 发起基于竟争的随机接入; 如果基站有下行数据需要传输, 基站会为 UE 选择一个专用前导, 将这个专用的前导告诉 UE, 通知 UE发起随机接入, 因为这个前导是专用的, 所以不会与其它 UE发生冲突, 这种随机接入称 为非竟争的随机接入。
现有技术中针对的是单个基站下的小区的载波聚合, 但涉及到多个 基站间的载波聚合场景, 如何实现用户设备与不同基站的随机接入, 是 业界期待解决的问题。
发明内容
本发明的实施例提供一种数据传输的方法、 设备与系统, 能够实现用 户设备与多个基站同时进行随机接入, 降低了用户设备与多个基站进行随 机接入的延迟, 加快了用户设备向多个基站进行随机接入的过程。
为了达到上述目的, 本发明的实施例釆用如下技术方案:
第一方面, 提供一种数据传输的方法, 用户设备获取第一前导和第 二前导, 所述第一前导对应第一基站的主时间提前组 PTAG的小区集合, 所 述第二前导对应第二基站的辅时间提前组 STAG的小区集合;
所述用户设备向所述第一基站发送所述第一前导,用于根据所述第 ― 前导向所述第一基站发起随机接入;
所述用户设备向所述第二基站发送所述第二前导,用于根据所述第二 前导向所述第二基站发起随机接入。
结合第一方面所述的数据传输的方法, 在第一种可能的实现方式中, 还包括:
所述用户设备获取第一信道资源, 所述第一信道资源为所述第一基 站的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于承载所 述第一前导的子帧集合;
所述用户设备获取第二信道资源,所述第二信道资源为所述第二基站 的物理随机接入信道资源, 所述第二信道资源包括待用于承载所述第二前 导的子帧集合。
结合第一方面第一种可能的方式所述的数据传输的方法,在第二种可 能的实现方式中:
所述用户设备获取第一信道资源, 具体包括:
所述用户设备通过系统广播消息接收所述第一基站发送的所述第一 信道资源;
所述用户设备获取第二信道资源, 具体包括:
所述用户设备通过专用信令接收所述第二基站发送的所述第二信道 资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
结合第一方面第一种或第二种可能的实现方式所述的数据传输的方 法, 在第三种可能的实现方式中, 所述用户设备向第一基站发送所述第一 前导和向第二基站发送第二前导, 具体包括:
所述用户设备确定所述第一信道资源中承载所述第一前导的子帧和 所述第二信道资源中承载所述第二前导的子帧,所述第一前导的发送时间 与所述第二前导的发送时间没有交叠;
所述用户设备通过所述承载所述第一前导的子帧向所述第一基站发 送所述第一前导;
所述用户设备通过所述承载所述第二前导的子帧向所述第二基站发 送所述第二前导。
结合第一方面第一种或第二种可能的实现方式所述的数据传输的方 法, 在第四种可能的实现方式中, 当所述第一前导的发送时间与所述第二 前导的发送时间有交叠时, 所述方法还包括:
所述用户设备推迟向所述第一基站发送所述第一前导的时间至其他 子帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
所述用户设备推迟向所述第二基站发送所述第二前导的时间至其他 子帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
当所述第一前导为公共前导时, 所述用户设备推迟向所述第一基站 发送对应于竟争的随机接入的所述第一前导的时间至其他子帧,以便于所 述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二前导为公共前导时, 所述用户设备推迟向所述第二基站 发送对应于竟争的随机接入的所述第二前导的时间至其他子帧,以便于所 述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述用户设备推迟向所述第一基站发送所述第一前导的 时间至待用于承载所述第一前导的子帧的下一个子帧,以便于所述第一前 导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述用户设备推迟向所述第二基站发送所述第二前导的 时间至待用于承载所述第二前导的子帧的下一个子帧,以便于所述第一前 导的发送时间与所述第二前导的发送时间没有交叠。
结合第一方面第一种或第二种可能的实现方式所述的数据传输的方 法, 在第五种可能的实现方式中:
所述用户设备向第一基站发送所述第一前导和向第二基站发送第二 前导, 具体包括:
所述用户设备选择所述第一信道资源中承载所述第一前导的子帧和 所述第二信道资源中承载所述第二前导的子帧,所述承载所述第一前导的 子帧的发射功率和所述承载所述第二前导的子帧的发射功率的总和小于 等于所述用户设备的最大发射功率;
所述用户设备通过所述承载所述第一前导的子帧向所述第一基站发 送所述第一前导;
所述用户设备通过所述承载所述第二前导的子帧向所述第二基站发 送所述第二前导。
结合第一方面第一种或第二种可能的实现方式所述的数据传输的方 法, 在第六种可能的实现方式中:
当所述第一前导为公共前导时,所述用户设备向第一基站发送所述第 一前导, 具体包括:
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述用户设备推迟向所述第一基站发送对应于所述第一前导的消息 三的时间至其他子帧,所述对应于所述第一前导的消息三的发送时间和所 述第二前导的发送时间没有交叠;
或者,
所述用户设备调整所述承载对应于所述第一前导的消息三的子帧的 发射功率,所述调整的承载所述对应于所述第一前导的消息三的子帧的发 射功率和所述第二信道资源中承载所述第二前导的子帧的发射功率的总 和小于等于所述用户设备的最大发射功率;
或者,
所述用户设备取消所述消息三的发送, 所述消息三对应于所述第一 前导;
当所述第二前导为公共前导时,所述用户设备向第二基站发送所述第 二前导, 具体包括:
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时:
所述用户设备推迟向所述第二基站发送对应于所述第二前导的消息 三的时间至其他子帧,所述对应于所述第二前导的消息三的发送时间和所 述第一前导的发送时间没有交叠;
或者,
所述用户设备调整所述承载对应于所述第二前导的消息三的子帧的 发射功率,所述调整的承载所述对应于所述第二前导的消息三的子帧的发 射功率和所述第一信道资源中承载所述第一前导的子帧的发射功率的总 和小于等于所述用户设备的最大发射功率;
或者,
所述用户设备取消所述消息三的发送, 所述消息三对应于所述第二 前导。
结合第一方面、第一方面第一种或第二种可能的实现方式所述的数据 传输的方法, 在第七种可能的实现方式中, 所述用户设备向所述第一基站 发送所述第一前导和向所述第二基站发送第二前导, 具体包括:
所述用户设备同时向所述第一基站发送所述第一前导和向所述第二 基站发送所述第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中,向所述第二基站 发送所述第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中,向所述第一基站 发送所述第一前导。
第二方面, 提供一种数据传输的方法, 包括:
第一基站接收所述用户设备发送的第一前导,所述第一前导对应所述 第一基站的主时间提前组 PTAG的小区集合;
在用户设备与第二基站进行随机接入过程中,所述第一基站根据所述 第一前导与所述用户设备进行随机接入;
其中,所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
结合第二方面, 在第一种可能的实现方式中, 所述基站接收所述用户 设备发送的第一前导或第二前导之前, 还包括:
所述第一基站配置第一信道资源, 所述第一信道资源为所述第一基 站的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于承载所 述第一前导的子帧集合。
结合第二方面第一种可能的方式所述的数据传输方法,在第二种可能 的实现方式中, 还包括:
所述基站向所述用户设备发送系统广播或专用信令, 所述系统广播 包括所述第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前 导的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集 合在时隙上不相同。
结合第二方面第一种或第二种可能的方式所述的数据传输方法,在第 三种可能的实现方式中, 所述第一基站配置第一信道资源, 具体包括: 所述第一基站接收所述第二基站发送的第二信道资源; 所述第一基站根据所述第二信道资源为所述用户设备配置所述第一 信道资源。
结合第二方面第一种或第二种可能的方式所述的数据传输方法,在第 四种可能的实现方式中, 还包括:
所述第一基站接收所述第二基站发送的第二信道资源;
所述第一基站向所述用户设备发送所述第一信道资源中与所述第二 信道资源不相交的部分,其中所述第一信道资源中与所述第二信道资源不 相交的部分中待用于承载所述第一前导的子帧集合和所述第二信道资源 中待用于承载所述第二前导的子帧集合在时隙上不相同。
第三方面, 提供一种用户设备, 包括处理单元和发送单元: 所述处理单元用于获取第一前导和第二前导,所述第一前导对应第一 基站的主时间提前组 PTAG的小区集合,所述第二前导对应第二基站的辅时 间提前组的 STAG小区集合;
所述发送单元用于向所述第一基站发送所述处理单元获取的所述第 一前导;
所述处理单元还用于根据所述第一前导向所述第一基站发起随机接 入;
所述发送单元还用于向所述第二基站发送所述处理单元获取的所述 第二前导;
所述处理单元还用于根据所述第二前导向所述第二基站发起随机接 入。
结合第三方面所述的用户设备,在第一种可能的实现方式中, 所述用 户设备, 还包括接收单元;
所述接收单元, 用于获取第一信道资源, 所述第一信道资源为所述 第一基站的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于 承载所述第一前导的子帧集合;
所述接收单元, 还用于获取第二信道资源, 所述第二信道资源为所述 第二基站的物理随机接入信道资源, 所述第二信道资源包括待用于承载所 述第二前导的子帧集合。 结合第三方面第一种可能的方式所述的用户设备,在第二种可能的实 现方式中:
所述接收单元具体用于通过系统广播消息接收所述第一基站发送的 所述第一信道资源;
所述接收单元具体用于通过专用信令接收所述第二基站发送的所述 第二信道资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
结合第三方面第一种或第二种可能的实现方式所述的用户设备,在第 三种可能的实现方式中:
所述处理单元, 具体用于确定所述第一信道资源中承载所述第一前 导的子帧和所述第二信道资源中承载所述第二前导的子帧,所述第一前导 的发送时间与所述第二前导的发送时间没有交叠;
所述发送单元具体用于通过所述处理单元确定的承载所述第一前导 的子帧向所述第一基站发送所述第一前导;
所述发送单元具体用于通过所述处理单元确定的承载所述第二前导 的子帧向所述第二基站发送所述第二前导。
结合第三方面第一种或第二种可能的实现方式所述的用户设备,在第 四种可能的实现方式中:
当所述第一前导的发送时间与所述第二前导的发送时间有交叠时, 所述处理单元,具体还用于推迟向所述第一基站发送所述第一前导的 时间至其他子帧,以便于所述第一前导的发送时间与所述第二前导的发送 时间没有交叠;
或者,
所述处理单元,具体还用于推迟向所述第二基站发送所述第二前导的 时间至其他子帧,以便于所述第一前导的发送时间与所述第二前导的发送 时间没有交叠;
或者,
当所述第一前导为公共前导时, 所述处理单元, 具体还用于推迟向所 述第一基站发送对应于竟争的随机接入的所述第一前导的时间至其他子 帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
当所述第二前导为公共前导时, 所述处理单元, 具体还用于推迟向所 述第二基站发送对应于竟争的随机接入的所述第二前导的时间至其他子 帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述处理单元具体用于推迟向所述第一基站发送所述第 一前导的时间至待用于承载所述第一前导的子帧的下一个子帧,以便于所 述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述处理单元具体用于推迟向所述第二基站发送所述第 二前导的时间至待用于承载所述第二前导的子帧的下一个子帧,以便于所 述第一前导的发送时间与所述第二前导的发送时间没有交叠。
结合第三方面第一种或第二种可能的实现方式所述的用户设备,在第 五种可能的实现方式中:
所述处理单元, 具体用于选择所述第一信道资源中承载所述第一前 导的子帧和所述第二信道资源中承载所述第二前导的子帧,所述承载所述 第一前导的子帧的发射功率和所述承载所述第二前导的子帧的发射功率 的总和小于等于所述用户设备的最大发射功率;
所述发送单元具体用于通过所述处理单元选择的承载所述第一前导 的子帧向所述第一基站发送所述第一前导;
所述发送单元具体用于通过所述处理单元选择的承载所述第二前导 的子帧向所述第二基站发送所述第二前导。 结合第三方面第一种或第二种可能的实现方式所述的用户设备,在第 六种可能的实现方式中:
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述处理单元, 具体用于推迟向所述第一基站发送对应于所述第一 前导的消息三的时间至其他子帧,所述对应于所述第一前导的消息三的发 送时间和所述第二前导的发送时间没有交叠;
或者,
所述处理单元, 具体用于调整所述承载对应于所述第一前导的消息 三的子帧的发射功率,所述调整的承载所述对应于所述第一前导的消息三 的子帧的发射功率和所述第二信道资源中承载所述第二前导的子帧的发 射功率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理单元, 具体用于取消所述消息三的发送, 所述消息三对应于 所述第一前导;
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时:
所述处理单元, 具体用于推迟向所述第二基站发送对应于所述第二 前导的消息三的时间至其他子帧,所述对应于所述第二前导的消息三的发 送时间和所述第一前导的发送时间没有交叠;
或者,
所述处理单元, 具体用于调整所述承载对应于所述第二前导的消息 三的子帧的发射功率,所述调整的承载所述对应于所述第二前导的消息三 的子帧的发射功率和所述第一信道资源中承载所述第一前导的子帧的发 射功率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理单元, 具体用于取消所述消息三的发送, 所述消息三对应于 所述第二前导。
结合第三方面、第三方面第一种或第二种可能的实现方式所述的用户 设备, 在第七种可能的实现方式中;
所述发送单元具体用于同时向所述第一基站发送所述处理单元获取 的第一前导和向所述第二基站发送所述处理单元获取的第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中,所述发送单元具 体用于向所述第二基站发送所述处理单元获取的第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中,所述发送单元具 体用于向所述第一基站发送所述处理单元获取的第一前导。
第四方面, 提供一种基站, 所述基站包括接收单元和接入单元: 所述接收单元, 用于接收所述用户设备发送的第一前导, 所述第一前 导对应所述第一基站的主时间提前组 PTAG的小区集合;
所述接入单元, 用于在用户设备与第二基站进行随机接入过程中, 根 据所述接收单元接收的第一前导与所述用户设备进行随机接入;
其中,所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
结合第四方面所述的基站, 在第一种可能的实现方式中;
所述接入单元还用于为所述用户设备配置第一信道资源, 所述第一 信道资源为所述基站的物理随机接入信道 PRACH资源, 所述第一信道资源 包括待用于承载所述第一前导的子帧集合。
结合第四方面第一种可能的方式所述的基站,在第二种可能的实现方 式中, 所述基站还包括发送单元:
所述发送单元用于向所述用户设备发送系统广播或专用信令, 所述 系统广播包括所述接入单元配置的第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前 导的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集 合在时隙上不相同。 结合第四方面第一种或第二种可能的方式所述的基站,在第三种可能 的实现方式中:
所述接收单元还用于接收所述第二基站发送的第二信道资源; 所述接入单元还用于根据所述接收单元接收的第二信道资源为所述 用户设备配置所述第一信道资源。
结合第四方面第一种或第二种可能的方式所述的基站,在第四种可能 的实现方式中:
所述接收单元还用于接收所述第二基站发送的第二信道资源; 所述发送单元还用于向所述用户设备发送所述第一信道资源中与所 述接收单元接收的第二信道资源不相交的部分,其中所述第一信道资源中 与所述第二信道资源不相交的部分中待用于承载所述第一前导的子帧集 合和所述第二信道资源中待用于承载所述第二前导的子帧集合在时隙上 不相同。 第五方面, 提供一种用户设备, 所述用户设备包括: 至少一个处理 器、 存储器、 发送器、 接收器及数据总线, 所述数据总线用于实现 所述处理器、 存储器、 接收器及所述发送器之间的连接及通讯; 其中所述处理器用于通过所述接收器获取第一前导和第二前导,所述 第一前导对应第一基站的主时间提前组 PTAG的小区集合,所述第二前导对 应第二基站的辅时间提前组的 STAG小区集合;
所述处理器还用于通过所述发送器向所述第一基站发送所述第一前 导, 用于根据所述第一前导向所述第一基站发起随机接入;
所述处理器还用于通过所述发送器向所述第二基站发送所述第二前 导, 用于根据所述第二前导向所述第二基站发起随机接入。
结合第五方面所述的用户设备, 在第一种可能的实现方式中: 所述处理器还用于通过所述接收器获取第一信道资源, 所述第一信 道资源为所述第一基站的物理随机接入信道 PRACH资源, 所述第一信道资 源包括待用于承载所述第一前导的子帧集合;
所述处理器还用于通过所述接收器获取第二信道资源,所述第二信道 资源为所述第二基站的物理随机接入信道资源, 所述第二信道资源包括待 用于承载所述第二前导的子帧集合。
结合第五方面第一种可能的方式所述的用户设备,在第二种可能的实 现方式中:
所述处理器还用于通过所述接收器接收的系统广播消息接收所述第 一基站发送的所述第一信道资源;
所述处理器还用于通过所述接收器接收的专用信令接收所述第二基 站发送的所述第二信道资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
结合第五方面第一种或第二种可能的实现方式所述的用户设备,在第 三种可能的实现方式中, 所述处理器, 还用于:
确定所述第一信道资源中承载所述第一前导的子帧和所述第二信道 资源中承载所述第二前导的子帧,所述第一前导的发送时间与所述第二前 导的发送时间没有交叠;
所述处理器还用于经所述发送器通过所述承载所述第一前导的子帧 向所述第一基站发送所述第一前导;
所述处理器还用于经所述发送器通过所述承载所述第二前导的子帧 向所述第二基站发送所述第二前导。
结合第五方面第一种或第二种可能的实现方式所述的用户设备,在第 四种可能的实现方式中:
当所述第一前导的发送时间与所述第二前导的发送时间有交叠时, 所述处理器还用于推迟向所述第一基站发送所述第一前导的时间至 其他子帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没 有交叠;
或者,
所述处理器还用于推迟向所述第二基站发送所述第二前导的时间至 其他子帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没 有交叠; 或者,
当所述第一前导为公共前导时, 所述处理器还用于推迟向所述第一 基站发送对应于竟争的随机接入的所述第一前导的时间至其他子帧,以便 于所述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二前导为公共前导时, 所述处理器还用于推迟向所述第二 基站发送对应于竟争的随机接入的所述第二前导的时间至其他子帧,以便 于所述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述处理器还用于推迟向所述第一基站发送所述第一前 导的时间至待用于承载所述第一前导的子帧的下一个子帧,以便于所述第 一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下 一个子帧的时间,所述处理器还用于推迟向所述第二基站发送所述第二前 导的时间至待用于承载所述第二前导的子帧的下一个子帧,以便于所述第 一前导的发送时间与所述第二前导的发送时间没有交叠。
结合第五方面第一种或第二种可能的实现方式所述的用户设备,在第 五种可能的实现方式中:
所述处理器具体用于选择所述第一信道资源中承载所述第一前导的 子帧和所述第二信道资源中承载所述第二前导的子帧,所述承载所述第一 前导的子帧的发射功率和所述承载所述第二前导的子帧的发射功率的总 和小于等于所述用户设备的最大发射功率;
所述处理器还用于经所述发送器通过所述承载所述第一前导的子帧 向所述第一基站发送所述第一前导;
所述处理器还用于经所述发送器通过所述承载所述第二前导的子帧 向所述第二基站发送所述第二前导。
结合第五方面第一种或第二种可能的实现方式所述的用户设备,在第 六种可能的实现方式中:
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述处理器具体用于推迟向所述第一基站发送对应于所述第一前导 的消息三的时间至其他子帧,所述对应于所述第一前导的消息三的发送时 间和所述第二前导的发送时间没有交叠;
或者,
所述处理器具体用于调整所述承载对应于所述第一前导的消息三的 子帧的发射功率,所述调整的承载所述对应于所述第一前导的消息三的子 帧的发射功率和所述第二信道资源中承载所述第二前导的子帧的发射功 率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理器具体用于取消所述消息三的发送, 所述消息三对应于所 述第一前导;
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时:
所述处理器具体用于推迟向所述第二基站发送对应于所述第二前导 的消息三的时间至其他子帧,所述对应于所述第二前导的消息三的发送时 间和所述第一前导的发送时间没有交叠;
或者,
所述处理器具体用于调整所述承载对应于所述第二前导的消息三的 子帧的发射功率,所述调整的承载所述对应于所述第二前导的消息三的子 帧的发射功率和所述第一信道资源中承载所述第一前导的子帧的发射功 率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理器具体用于取消所述消息三的发送, 所述消息三对应于所 述第二前导。 结合第五方面、第五方面第一种或第二种可能的实现方式所述的用户 设备, 在第七种可能的实现方式中;
所述处理器具体用于通过所述发送器同时向所述第一基站发送所述 第一前导和向所述第二基站发送所述第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中,所述处理器具体 用于通过所述发送器向所述第二基站发送所述第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中,所述处理器具体 用于通过所述发送器向所述第一基站发送所述第一前导。 第六方面, 提供一种基站, 所述基站包括: 至少一个处理器、 存储 器、 接收器及数据总线, 所述数据总线用于实现所述处理器、 存储 器及所述接收器之间的连接及通讯;
所述处理器, 用于, 通过所述接收器接收所述用户设备发送的第一 前导, 所述第一前导对应所述第一基站的主时间提前组 PTAG的小区集合; 所述处理器,还用于在用户设备与第二基站进行随机接入过程中根据 所述第一前导与所述用户设备进行随机接入;
其中,所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
结合第六方面, 在第一种可能的实现方式中;
所述处理器还用于为所述用户设备配置第一信道资源, 所述第一信 道资源为所述基站的物理随机接入信道 PRACH资源, 所述第一信道资源包 括待用于承载所述第一前导的子帧集合。
结合第六方面第一种可能的方式所述的基站,在第二种可能的实现方 式中, 所述基站还包括与所述数据总线连接的发送器;
所述处理器通过所述发送器向所述用户设备发送系统广播或专用信 令, 所述系统广播包括所述第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前 导的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集 合在时隙上不相同。
结合第六方面第一种或第二种可能的方式第一种可能的方式所述的 基站, 在第三种可能的实现方式中:
所述处理器还用于通过所述接收器接收所述第二基站发送的第二信 道资源;
所述处理器还用于根据所述第二信道资源为所述用户设备配置所述 第一信道资源。
结合第六方面第一种或第二种可能的方式所述的基站,在第四种可能 的实现方式中:
所述处理器还用于通过所述接收器接收所述第二基站发送的第二信 道资源;
所述处理器还用于通过所述发送器向所述用户设备发送所述第一信 道资源中与所述第二信道资源不相交的部分,其中所述第一信道资源中与 所述第二信道资源不相交的部分中待用于承载所述第一前导的子帧集合 和所述第二信道资源中待用于承载所述第二前导的子帧集合在时隙上不 相同。
第七方面, 提供一种通信系统, 包括至少两个基站和至少一个用 户设备, 所述基站为上述的基站, 其中, 一个基站作为第一基站, 至少一个基站作为第二基站, 所述用户设备为上述的用户设备。
本发明的实施例提供的数据传输的方法、 设备与系统, 用户设备可以 同时将用作随机接入的前导发送至多个基站, 实现了用户设备同时向多个 基站发起并行式随机接入, 降低了用户设备与多个基站进行随机接入的延 迟, 加快了用户设备向多个基站进行随机接入的过程。
附图说明 将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图 1为本发明的实施例提供的一种通信系统的结构示意图; 图 2为本发明的实施例提供的一种用户设备的结构示意图; 图 3为本发明的实施例提供的一种数据传输方法的原理示意图; 图 4为本发明的实施例提供的一种基站设备的结构示意图; 图 5为本发明的另一实施例提供的一种基站设备的结构示意图; 图 6为本发明的另一实施例提供的一种用户设备的结构示意图; 图 7为本发明的实施例提供的一种数据传输方法的流程示意图; 图 8为本发明的实施例提供的另一种数据传输方法的流程示意图; 图 9 为本发明另一实施例提供的一种数据传输方法的信令交互示意 图;
图 1 0为本发明另一实施例提供的一种数据传输方法的原理示意图; 图 1 1 为本发明另一实施例提供的另一种数据传输方法的原理示意 图;
图 1 2 为本发明另一实施例提供的又一种数据传输方法的原理示意 图;
图 1 3 为本发明另一实施例提供的再一种数据传输方法的原理示意 图;
图 14为本发明又一实施例提供的一种数据传输方法的信令交互示意 图;
图 1 5为本发明又一实施例提供的一种数据传输方法的原理示意图; 图 1 6 为本发明又一实施例提供的另一种数据传输方法的原理示意 图。
具体实施方式
下面将结合本发明的实施例中的附图, 对本发明的实施例中的技术 方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部 分实施例, 而不是全部的实施例。
本文中结合终端和 /或基站来描述本发明的实施例中涉及的各种方 面。
其中, 终端, 指向用户提供语音和 /或数据连通性的设备, 包括无线 终端或有线终端。 无线终端可以是具有无线连接功能的手持式设备、 或 连接到无线调制解调器的其他处理设备, 经无线接入网与一个或多个核 心网进行通信的移动终端。 例如, 无线终端可以是移动电话 (或称为"蜂 窝"电话) 和具有移动终端的计算机。 又如, 无线终端也可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置。 再如, 无线终端 可以为移动站 ( mobile station, MS )、 接入点 ( access point , AP )、 或用户装备 (user equipment, UE ) 等。 为便于叙述, 本发明各实施例 中将上述终端统称为 UE。
基站(base station, BS) , 可以是指接入网中在空中接口上通过一 个或多个小区与无线终端通信的设备。 例如, 基站可以是全球移动通信 系统 ( global system for mobile communications, GSM ) 或码分多址 (code-division multiple acces s, CDMA)中的基站 ( base transceiver station, BTS ), 也可以是宽带码分多址(wideband CDMA, WCDMA)中的基 站 (英文为: NodeB ), 还可以是长期演进(Long Term Evolution, LTE) 中的演进型基站 (英文为: evolutional Node B, 简称 BS或 e_NodeB ), 或者是后续演进网络中的基站, 本发明对此并不做限定。
本发明的实施例应用于通讯系统中用户设备与多个基站进行随机接 入的场景, 在随机接入中, 用户设备 UE向基站发送前导, 基站根据用户 设备发送的前导, 获取初始上行发送时间提前量 TA, 用户设备在不同小 区所使用的上行发送时间提前量可以相同, 也可以不同。 使用同一个上 行发送时间量的多个小区的集合, 称为时间提前组 ( Timing Advance Group, TAG), 时间提前组 TAG内的小区位于同一个基站上; 不同的时间 提前组可以位于同一个基站上, 也可以位于不同的基站上。 用户设备初 始接入的小区称为用户设备的主小区 (Primary Cell, PCell ), 其他小 区称为辅小区 ( secondary Cell, SCell ), 包含主小区的时间提前组, 称为主时间提前组 ( Primary Timing Advance Group, PTAG ), 其它时间 提前组贝 'J称为辅时间提前组 ( secondary time alignment group, STAG )。 用户设备接入主小区成功后基站为用户设备配置辅小区。 一个用户设备 只有一个主小区, 但是可以有多个辅小区。 任何一个时间提前组上的随 机接入成功, 获得有效的时间提前量后, 该时间提前组所在基站的所有 逻辑信道的数据都可以通过这个时间提前组上的小区和用户设备进行数 据传输。 对于一个逻辑信道而言, 只要所在基站有成功的随机接入, 就 可以传输数据了。
具体的, 本发明的实施例提供一种通讯系统, 参照图 1 所示, 包括 至少两个基站(第一基站 BS1、第二基站 BS2 )及至少一个用户设备 UE31, 第一基站 BS1、 第二基站 BS2与用户设备 UE31 (第一基站 BS1与第二基 站 BS2 同时为用户设备 UE31-UE3k提供随机接入服务) 共同构成该通讯 系统, 其中, 第一基站为用户设备 UE31 的 PTAG小区所在的基站, 第二 基站为用户设备 UE31的至少一个 STAG小区所在的基站。
参照图 2 所示, 提供了一种用户设备 (可用作如图 1 中所示的 UE31-UE3k ), 应用于图 1所提供的通讯系统中, 该用户设备 2 包括: 处 理单元 21及发送单元 11。
处理单元 21用于获取第一前导和第二前导,第一前导对应第一基站 BS1的主时间提前组 PTAG的小区集合, 第二前导对应第二基站 BS2的辅 时间提前组的 STAG小区集合。
发送单元 22用于向第一基站 BS1发送处理单元 21获取的第一前导。 处理单元 21还用于根据第一前导向第一基站 BS1发起随机接入。 发送单元 22还用于向第二基站 BS2发送处理单元 21获取的第二前 导。
处理单元 21还用于根据第二前导向第二基站 BS2发起随机接入。 进一步的, 参照图 2所示, 用户设备 2, 还包括接收单元 23;
接收单元 23, 用于获取第一信道资源, 第一信道资源为第一基站的 物理随机接入信道 PRACH 资源, 第一信道资源包括待用于承载第一前导 的子帧集合。
接收单元 23, 还用于获取第二信道资源, 第二信道资源为第二基站 的物理随机接入信道资源, 第二信道资源包括待用于承载第二前导的子 帧集合。
可选的, 接收单元 23具体用于通过系统广播消息接收第一基站 BS1 发送的第一信道资源;
接收单元 23具体用于通过专用信令接收第二基站 BS2发送的第二信 道资源;
第一信道资源中待用于承载第一前导的子帧集合与第二信道资源中 待用于承载第二前导的子帧集合在时隙上不相同。
本实施例中, 当第二信道资源仅用作用户设备 2承载第二前导时, 第二基站通过专用信令而非系统广播将第二信道资源发送至用户设备 2 , 避免用户设备搜索系统广播, 降低了用户设备的能耗。
可选的, 如图 3所示, 处理单元 21 , 具体还用于确定第一信道资源 中承载第一前导的子帧和第二信道资源中承载第二前导的子帧, 第一前 导的发送时间与第二前导的发送时间没有交叠, 具体的, 用户设备通过 第一帧结构向第一基站 BS 1 发送第一前导, 通过第二帧结构向第二基站 BS 2发送第二前导。
发送单元 23具体用于通过处理单元 21确定的承载第一前导的子帧 向第一基站发送第一前导;
发送单元 23具体用于通过处理单元 21确定的承载第二前导的子帧 向第二基站发送第二前导。
其中, 参照图 3 ( a ) 或图 3 ( b ) 所示, 第一帧结构中, 子帧 2、 子 帧 5及子帧 8为具有第一信道资源的子帧, 子帧 2为最早出现的具有第 一信道资源的子帧, 第二帧结构中, 子帧 2、 子帧 4及子帧 6 为具有第 二信道资源的子帧, 子帧 2为最早出现的具有第二信道资源的子帧。
其中, 第一前导的发送时间与第二前导的发送时间有交叠, 具体包 括两种情况:
情况一, 第一帧结构中第一个具有第一信道资源的子帧和第二帧结 构中第一个具有第二信道资源的子帧位于同一时隙, 如图 3 ( a ) 所示, 第一前导位于第一帧结构的子帧 2 , 第二前导位于第二帧结构的子帧 2 , 此时, 第一帧结构的子帧 1 的发送时间为 2- 3 , 第二帧结构的子帧 1 的 发送时间为 2-3。
情况二, 第一帧结构中第一个具有第一信道资源的子帧和第二帧结 构中第一个具有第二信道资源的子帧位于不同时隙, 但某一前导占用不 止一个子帧, 且占用的子帧与另一前导所在的子帧位于同一时隙, 如图 3 ( b ) 所示, 第一前导位于第一帧结构的子帧 2, 第二前导位于第二帧 结构的子帧 1, 占用第二帧结构的子帧 2, 此时, 第一帧结构的子帧 2的 发送时间为 2-3, 第二帧结构的子帧 1的发送时间为 1-3。
其他情况则为第一前导的发送时间与第二前导的发送时间没有交 叠。
可选的, 当第一前导的发送时间与第二前导的发送时间有交叠时, 处理单元 21, 推迟发送第一前导和第二前导中的某一个前导的时间至其 他子帧。
具体的,处理单元 21推迟向第一基站发送第一前导的时间至其他子 帧, 以便于第一前导的发送时间与第二前导的发送时间没有交叠, 如图 3 ( a) 所示, 当第一前导与第二前导都位于子帧 1 时, 可以将第一前导 推迟至子帧 5或子帧 8, 其中, 推迟至子帧 5 的延时比推迟至子帧 8 的 延时低;
或者,
处理单元 21推迟向第二基站发送第二前导的时间至其他子帧,以便 于第一前导的发送时间与第二前导的发送时间没有交叠, 如图 3 ( a ) 所 示, 当第一前导与第二前导都位于子帧 2 时, 可以将第二前导推迟至子 帧 4或子帧 6, 其中, 推迟至子帧 4的延时比推迟至子帧 6的延时低; 或者,
当第一前导为公共前导时,处理单元 21推迟向第一基站发送对应于 竟争的随机接入的第一前导的时间至其他子帧, 以便于第一前导的发送 时间与第二前导的发送时间没有交叠, 如图 3 ( a ) 所示, 当第一前导与 第二前导都位于子帧 1 时, 可以将第一前导推迟至子帧 5或子帧 8, 其 中, 推迟至子帧 5的延时比推迟至子帧 8的延时低;
或者,
当第二前导为公共前导时,处理单元 21推迟向第二基站发送对应于 竟争的随机接入的第二前导的时间至其他子帧, 以便于第一前导的发送 时间与第二前导的发送时间没有交叠, 如图 3 ( a ) 所示, 当第一前导与 第二前导都位于子帧 2 时, 可以将第二前导推迟至子帧 4或子帧 6, 其 中, 推迟至子帧 4的延时比推迟至子帧 6的延时低;
或者,
当第一信道资源中待用于承载第一前导的子帧的下一个子帧的时间 早于第二信道资源中待用于承载第二前导的子帧的下一个子帧的时间, 处理单元 21推迟向第一基站发送第一前导的时间至其他子帧, 以便于第 一前导的发送时间与第二前导的发送时间没有交叠;
或者,
当第二信道资源中待用于承载第二前导的子帧的下一个子帧的时间 早于第一信道资源中待用于承载第一前导的子帧的下一个子帧的时间, 处理单元 21推迟向第二基站发送第二前导的时间至其他子帧, 以便于第 一前导的发送时间与第二前导的发送时间没有交叠, 具体的, 如图 3 ( a ) 所示, 待用于承载第一前导的子帧的下一个子帧为第一帧结构的子帧 5, 待用于承载第二前导的子帧的下一个子帧为第二帧结构的子帧 4, 则推 迟第二前导至子帧 4, 此时, 推迟第二前导造成的延迟比推迟第一前导 小;
或者,
如上述图 3 ( b ) 所示的某一前导占用不止一个子帧, 且占用的子帧 与另一前导所在的子帧位于同一时隙时, 处理单元 21推迟所在子帧出现 的更晚的前导, 具体的, 如图 3 ( b ) 所述, 第二前导位于子帧 1, 第一 前导位于子帧 2, 则推迟第一前导至子帧 5。
进一步的, 当对应于第一前导的消息三的发送时间和第二前导的发 送时间有交叠时:
处理单元 21, 具体用于推迟向第一基站发送对应于第一前导的消息 三的时间至其他子帧, 对应于第一前导的消息三的发送时间和第二前导 的发送时间没有交叠;
或者,
处理单元 21, 具体用于调整承载对应于第一前导的消息三的子帧的 发射功率, 调整的承载对应于第一前导的消息三的子帧的发射功率和第 二信道资源中承载第二前导的子帧的发射功率的总和小于等于用户设备 的最大发射功率;
或者,
处理单元 21,具体用于取消消息三的发送, 消息三对应于第一前导; 当对应于第二前导的消息三的发送时间和第一前导的发送时间有交 叠时:
处理单元 21, 具体用于推迟向第二基站发送对应于第二前导的消息 三的时间至其他子帧, 对应于第二前导的消息三的发送时间和第一前导 的发送时间没有交叠;
或者,
处理单元 21, 具体用于调整承载对应于第二前导的消息三的子帧的 发射功率, 调整的承载对应于第二前导的消息三的子帧的发射功率和第 一信道资源中承载第一前导的子帧的发射功率的总和小于等于用户设备 的最大发射功率;
或者,
处理单元 21,具体用于取消消息三的发送, 消息三对应于第二前导。 进一步的, 发送单元 22 同时向第一基站 BS1发送处理单元 21获取 的第一前导和向第二基站 BS2发送处理单元 21获取的第二前导;
或者,
用户设备 2与第一基站 BS1进行随机接入过程中,发送单元 11具体 用于向第二基站 BS2发送处理单元 21获取的第二前导;
或者,
用户设备 2与第二基站 BS2进行随机接入过程中,发送单元 11具体 用于向第一基站 BS1发送处理单元 21获取的第一前导。
本发明的实施例提供的用户设备, 将用作随机接入的前导发送至多 个基站, 实现了用户设备向多个基站发起并行式随机接入, 降低了用户 设备与多个基站进行随机接入的延迟, 加快了用户设备向多个基站进行 随机接入的过程。
参照图 4所示, 本发明的实施例提供的基站 4, 应用于上述图 1 所 提供的通讯系统中的第一基站 BS1 和第二基站 BS2, 其中第一基站 BS1 和第二基站 BS2的结构可以相同, 包括: 接收单元 41和接入单元 42。 第一基站 BS 1的接收单元 41 , 用于接收用户设备发送的第一前导, 第一前导对应第一基站 BS 1的主时间提前组 PTAG的小区集合。
当用户设备与第二基站 BS 2进行随机接入过程中,接入单元 42用于 根据接收单元 41接收的第一前导与用户设备进行随机接入。
其中, 用户设备与第二基站进行随机接入所需的第二前导对应第二 基站的辅时间提前组 STAG的小区集合。
进一步的, 接入单元 42还用于为用户设备配置第一信道资源, 第一 信道资源为基站的物理随机接入信道 PRACH 资源, 第一信道资源包括待 用于承载第一前导的子帧集合。
可选的, 参照图 4所示, 基站 4还包括发送单元 43 ;
发送单元 43用于向用户设备发送系统广播或专用信令, 系统广播包 括接入单元 42配置的第一信道资源;
其中, 用户设备获取的第二信道资源中待用于承载第二前导的子帧 集合与第一信道资源中待用于承载第一前导的子帧集合在时隙上不相 同。
可选的,第一基站的接收单元 41还用于接收第二基站发送的第二信 道资源;
接入单元 42还用于根据接收单元 41接收的第二信道资源为用户设 备配置第一信道资源。
这样, 基站在配置信道资源的时候, 可以避免第一信道资源和第二 信道资源的子帧位于相同的时隙, 避免了用户设备将第一前导和第二前 导设置在时隙相同的子帧的情况, 降低了用户设备的工作量。
可选的,第一基站的接收单元 41还用于接收第二基站发送的第二信 道资源;
发送单元 43还用于向用户设备发送第一信道资源中与接收单元 41 接收的第二信道资源不相交的部分, 其中第一信道资源中与第二信道资 源不相交的部分中待用于承载第一前导的子帧集合和第二信道资源中待 用于承载第二前导的子帧集合在时隙上不相同。 由于第二信道资源是通过专用信令发送至用户设备, 因此, 第二信 道资源中包含的子帧可以根据第一信道资源做出调整, 而不用考虑对其 他用户设备的影响。
本发明的实施例提供的基站, 能够通过包含用户设备用于与自身发 起随机接入的前导, 实现用户设备与多个基站同时进行随机接入, 降低 了用户设备与多个基站进行随机接入的延迟, 加快了用户设备向多个基 站进行随机接入的过程。
参照图 5 所示, 本发明的实施例还提供一种用户设备 5, 应用于上 述各实施例提供的通讯系统, 具体包括处理器 51、 存储器 52、 发送器 53、 接收器 54及数据总线 55, 其中数据总线 55用于实现处理器 51、 存 储器 52、 接收器 54及发送器 53之间的连接及通讯。
该数据总线 55 可以是工业标准体系结构 ( Industry Standard Architecture, I SA )总线、夕卜部设备互连( Per iphera 1 Component , PCI ) 总线或扩展工业标准体 系 结构 ( Extended Industry Standard Architecture, EISA ) 总线等。 该总线 55 可以分为地址总线、 数据总 线、 控制总线等。 为便于表示, 图 5 中仅用一条粗线箭头表示, 但并不 表示仅有一根总线或一种类型的总线。
其巾:
存储器 52用于存储数据或可执行程序代码,其中程序代码包括计算 机操作指令, 具体可以为: 操作系统、 应用程序等。 存储器 52可能包含 高速 RAM存储器,也可能还包括非易失性存储器( non-volatile memory), 例如至少一个磁盘存储器。
处理器 51 可能是一个中央处理器 ( Central Processing Unit, CPU ) , 或者是特定集成电路 ( Application Specific Integrated Circuit, ASIC), 或者是被配置成实施本发明的实施例的一个或多个集 成电路。
发送器 53 及接收器 54, 主要用于实现本实施例中的设备之间的通 信。
其中处理器 51用于通过接收器 54获取第一前导和第二前导, 第一 前导对应第一基站的主时间提前组 PTAG的小区集合, 第二前导对应第二 基站的辅时间提前组的 STAG小区集合;
处理器 51还用于通过发送器 53向第一基站发送第一前导, 用于根 据第一前导向第一基站发起随机接入;
处理器 51还用于通过发送器 53向第二基站发送第二前导, 用于根 据第二前导向第二基站发起随机接入。
可选的, 处理器 51还用于通过接收器 54获取第一信道资源, 第一 信道资源为第一基站的物理随机接入信道 PRACH 资源, 第一信道资源包 括待用于承载第一前导的子帧集合;
处理器 51还用于通过接收器 54获取第二信道资源, 第二信道资源 为第二基站的物理随机接入信道 PRACH 资源, 第二信道资源包括待用于 承载第二前导的子帧集合。
进一步的, 处理器 51还用于通过接收器 54接收的系统广播消息接 收第一基站发送的第一信道资源;
处理器 51还用于通过接收器 54接收的专用信令接收第二基站发送 的第二信道资源;
其中, 第一信道资源中待用于承载第一前导的子帧集合与第二信道 资源中待用于承载第二前导的子帧集合在时隙上不相同。
可选的, 处理器 51 , 还用于:
确定第一信道资源中承载第一前导的子帧和第二信道资源中承载第 二前导的子帧, 第一前导的发送时间与第二前导的发送时间没有交叠; 处理器 51还用于经发送器 53通过承载第一前导的子帧向第一基站 发送第一前导;
处理器 51还用于经发送器 53通过承载第二前导的子帧向第二基站 发送第二前导。
进一步的, 当第一前导的发送时间与第二前导的发送时间有交叠时, 处理器 51还用于推迟向第一基站发送第一前导的时间至其他子帧, 以便于第一前导的发送时间与第二前导的发送时间没有交叠;
或者, 处理器 5 1还用于推迟向第二基站发送第二前导的时间至其他子帧, 以便于第一前导的发送时间与第二前导的发送时间没有交叠;
或者,
当第一前导为公共前导时,处理器 5 1还用于推迟向第一基站发送对 应于竟争的随机接入的第一前导的时间至其他子帧, 以便于第一前导的 发送时间与第二前导的发送时间没有交叠;
或者,
当第二前导为公共前导时,处理器 5 1还用于推迟向第二基站发送对 应于竟争的随机接入的第二前导的时间至其他子帧, 以便于第一前导的 发送时间与第二前导的发送时间没有交叠;
或者,
当第一信道资源中待用于承载第一前导的子帧的下一个子帧的时间 早于第二信道资源中待用于承载第二前导的子帧的下一个子帧的时间, 处理器 5 1还用于推迟向第一基站发送第一前导的时间至其他子帧, 以便 于第一前导的发送时间与第二前导的发送时间没有交叠;
或者,
当第二信道资源中待用于承载第二前导的子帧的下一个子帧的时间 早于第一信道资源中待用于承载第一前导的子帧的下一个子帧的时间, 处理器 5 1还用于推迟向第二基站发送第二前导的时间至其他子帧, 以便 于第一前导的发送时间与第二前导的发送时间没有交叠;
或者,
当发送时间有交叠的情况为上述图 3 ( b ) 所示的, 某一前导占用不 止一个子帧, 且占用的子帧与另一前导所在的子帧位于同一时隙时, 处 理器 5 1推迟所在子帧出现的更晚的前导。
可选的,处理器 5 1具体用于选择第一信道资源中承载第一前导的子 帧和第二信道资源中承载第二前导的子帧, 承载第一前导的子帧的发射 功率和承载第二前导的子帧的发射功率的总和小于等于用户设备的最大 发射功率;
处理器 51还用于经发送器 5 3通过承载第一前导的子帧向第一基站 发送第一前导;
处理器 51还用于经发送器 5 3通过承载第二前导的子帧向第二基站 发送第二前导。
可选的, 当对应于第一前导的消息三的发送时间和第二前导的发送 时间有交叠时:
处理器 5 1 具体用于推迟向第一基站发送对应于第一前导的消息三 的时间至其他子帧, 对应于第一前导的消息三的发送时间和第二前导的 发送时间没有交叠;
或者,
处理器 5 1 具体用于调整承载对应于第一前导的消息三的子帧的发 射功率, 调整的承载对应于第一前导的消息三的子帧的发射功率和第二 信道资源中承载第二前导的子帧的发射功率的总和小于等于用户设备的 最大发射功率;
或者,
处理器 5 1具体用于取消消息三的发送, 消息三对应于第一前导; 当对应于第二前导的消息三的发送时间和第一前导的发送时间有交 叠时:
处理器 5 1 具体用于推迟向第二基站发送对应于第二前导的消息三 的时间至其他子帧, 对应于第二前导的消息三的发送时间和第一前导的 发送时间没有交叠;
或者,
处理器 5 1 具体用于调整承载对应于第二前导的消息三的子帧的发 射功率, 调整的承载对应于第二前导的消息三的子帧的发射功率和第一 信道资源中承载第一前导的子帧的发射功率的总和小于等于用户设备的 最大发射功率;
或者,
处理器 5 1具体用于取消消息三的发送, 消息三对应于第二前导。 进一步可选的, 处理器 51具体用于通过发送器 5 3 同时向第一基站 发送第一前导和向第二基站发送第二前导; 或者,
用户设备与第一基站进行随机接入过程中,处理器 51具体用于通过 发送器 53向第二基站发送第二前导;
或者,
用户设备与第二基站进行随机接入过程中,处理器 51具体用于通过 发送器 53向第一基站发送第一前导。
本发明的实施例提供的用户设备, 同时将用作随机接入的前导发送 至多个基站, 实现了用户设备同时向多个基站发起并行式随机接入, 降 低了用户设备与多个基站进行随机接入的延迟, 加快了用户设备向多个 基站进行随机接入的过程。
本发明的实施例还提供一种基站 6, 应用于上述各实施例提供的通 讯系统中的基站 (参照图 1 中的第一基站 BS1和第二基站 BS2 ), 第一基 站 BS1和第二基站 BS2结构完全相同, 具体包括处理器 61、 存储器 62、 接收器 64及数据总线 65, 其中数据总线 65用于实现处理器 61、 存储器 62及接收器 64之间的连接及通讯。
该数据总线 65 可以是工业标准体系结构 ( Industry Standard Architecture, I SA )总线、夕卜部设备互连( Per iphera 1 Component , PCI ) 总线或扩展工业标准体 系 结构 ( Extended Industry Standard Architecture, EISA ) 总线等。 该总线 65 可以分为地址总线、 数据总 线、 控制总线等。 为便于表示, 图 6 中仅用一条粗线箭头表示, 但并不 表示仅有一根总线或一种类型的总线。 其中:
存储器 62用于存储数据或可执行程序代码,其中程序代码包括计算 机操作指令, 具体可以为: 操作系统、 应用程序等。 存储器 42可能包含 高速 RAM存储器,也可能还包括非易失性存储器( non-volatile memory), 例如至少一个磁盘存储器。
处理器 61 可能是一个中央处理器 ( Central Processing Unit, CPU ) , 或者是特定集成电路 ( Application Specific Integrated Circuit, ASIC ), 或者是被配置成实施本发明的实施例的一个或多个集 成电路。 接收器 64 , 主要用于实现本实施例中的设备之间的通信。 其中,处理器 61用于通过接收器 64接收用户设备发送的第一前导, 第一前导对应第一基站的主时间提前组 PTAG的小区集合。
在用户设备与第二基站进行随机接入过程中,处理器 61还用于根据 第一前导与用户设备进行随机接入。
可选的, 基站 6还包括与数据总线 65连接的发送器 63。
其中, 用户设备与第二基站进行随机接入所需的第二前导对应第二 基站的辅时间提前组 STAG的小区集合。
进一步的, 处理器 61还用于为用户设备配置第一信道资源, 第一信 道资源为第一基站的物理随机接入信道 PRACH 资源, 第一信道资源包括 待用于承载第一前导的子帧集合。
可选的, 基站 6还包括与数据总线 65连接的发送器 63 ;
处理器 61通过发送器 63向用户设备发送系统广播或专用信令, 系 统广播包括第一信道资源;
其中, 用户设备获取的第二信道资源中待用于承载第二前导的子帧 集合与第一信道资源中待用于承载第一前导的子帧集合在时隙上不相 同。
可选的, 基站 6的处理器 61还用于通过接收器 64接收第二基站发 送的第二信道资源;
基站 6的处理器 61还用于根据第二信道资源为用户设备配置第一信 道资源。
或者, 基站 6的处理器 61还用于通过接收器 64接收第二基站发送 的第二信道资源;
基站 6的处理器 61还用于通过发送器 63向用户设备发送第一信道 资源中与第二信道资源不相交的部分, 其中第一信道资源中与第二信道 资源不相交的部分中待用于承载第一前导的子帧集合和第二信道资源中 待用于承载第二前导的子帧集合在时隙上不相同。
本发明的实施例提供的基站, 能够通过获取用户设备用于与自身发 起随机接入的前导, 实现用户设备与多个基站同时进行随机接入, 降低 了用户设备与多个基站进行随机接入的延迟, 加快了用户设备向多个基 站进行随机接入的过程。
参照图 7所示, 本发明的实施例提供一种数据传输方法, 应用于本 发明的装置实施例提供的用户设备, 具体包括以下步骤:
701、 用户设备获取第一前导和第二前导, 第一前导对应第一基站的 主时间提前组 PTAG的小区集合, 第二前导对应第二基站的辅时间提前组 的 STAG小区集合。
702、 用户设备向第一基站发送第一前导, 用于根据第一前导向第一 基站发起随机接入。
703、 用户设备向第二基站发送第二前导, 用于根据第二前导向第二 基站发起随机接入。
其中, 步骤 702和步骤 703没有时间顺序, 在执行步骤 702的过程 中执行步骤 703 , 也可以执行步骤 703的过程中执行步骤 702 , 也可以同 时执行步骤 702和步骤 703。
进一步的, 在步骤 701之前, 还包括:
701 a , 用户设备获取第一信道资源, 第一信道资源为第一基站的物 理随机接入信道 PRACH 资源, 第一信道资源包括待用于承载第一前导的 子帧集合。
其中, 用户设备获取第一信道资源, 具体包括:
用户设备通过系统广播消息接收第一基站发送的第一信道资源。 701 b , 用户设备获取第二信道资源, 第二信道资源为第二基站的物 理随机接入信道资源, 第二信道资源包括待用于承载第二前导的子帧集 合。
其中, 用户设备获取第二信道资源, 具体包括:
用户设备通过专用信令接收第二基站发送的第二信道资源。
本发明的实施例提供的数据传输方法, 用户设备同时将用作随机接 入的前导发送至多个基站, 实现了用户设备同时向多个基站发起并行式 随机接入, 降低了用户设备与多个基站进行随机接入的延迟, 加快了用 户设备向多个基站进行随机接入的过程。 参照图 8所示, 本发明的实施例提供另一种数据传输方法, 应用于 本发明的装置实施例提供的基站, 其中第一基站与第二基站的功能可以 相同, 这里仅用作区分, 该方法具体包括以下步骤:
801、 第一基站接收用户设备发送的第一前导。
其中, 第一前导对应第一基站的主时间提前组 PTAG的小区集合。 在用户设备与第二基站进行随机接入过程中:
802、 第一基站根据第一前导与用户设备进行随机接入。
其中, 用户设备与第二基站进行随机接入所需的第二前导对应第二 基站的辅时间提前组 STAG的小区集合。
进一步的, 在步骤 801之前该方法还包括:
第一基站配置第一信道资源, 第一信道资源为第一基站的物理随机 接入信道 PRACH 资源, 第一信道资源包括待用于承载第一前导的子帧集 合。
基站向用户设备发送系统广播或专用信令, 系统广播包括第一信道 资源。
具体的,
当基站为第一基站时, 基站发送包括第一信道资源的系统广播; 当基站为第二基站时, 基站发送包括第二信道资源的专用信令至用 户设备。
本发明的实施例提供的数据传输方法, 基站能够通过用户设备用于 与自身发起随机接入的前导, 实现用户设备与多个基站同时进行随机接 入, 降低了用户设备与多个基站进行随机接入的延迟, 加快了用户设备 向多个基站进行随机接入的过程。
具体的, 参照图 9所示, 当用户设备需要同时与多个基站进行数据 业务的传输时,提供了一种用户设备向基站发起随机接入的信令交互图, 其中, 第一基站至少包括一个用户设备载波聚合数据传输的主时间提前 组 PTAG小区, 第二基站包括至少一个用户设备载波聚合数据传输的辅时 间提前组 STAG小区。 当用户设备需要与第一基站及第二基站进行数据业 务的传输时, 用户设备将用作与第一基站发起随机接入的前导设置在第 一帧结构, 将用作与第二基站发起随机接入的前导设置在第二帧结构, 并将第一帧结构与第二帧结构同时发送, 其中第一帧结构发送至第一基 站, 第二帧结构发送至第二基站。
第一基站根据主时间提前组 PTAG 小区的前导处理用户设备的随机 接入, 同时, 第二基站根据辅时间提前组 STAG小区的前导处理用户设备 的随机接入。
具体的, 包括以下步骤:
901、 第一基站发送包括第一信道资源的系统广播, 发送第一控制信 息。
其中第一信道资源为第一基站的 PRACH资源; 第一控制信息, 包括 公共的前导指示参数或者专用的前导指示参数, 用户设备根据第一基站 的公共的前导指示参数及第一信道资源生成公共的第一前导, 或根据第 一基站的专用的前导指示参数及第一信道资源生成专用的第一前导。
902、 第二基站发送包括第二信道资源的专用信令, 发送第二控制信 息。
其中第二信道资源为第二基站的 PRACH资源; 第二控制信息, 包括 公共的前导指示参数或者专用的前导指示参数, 用户设备根据第二基站 的公共的前导指示参数及第二信道资源生成公共的第二前导, 或根据第 二基站的专用的前导指示参数及第二信道资源生成专用的第二前导。 903、 用户设备通过第一基站的系统广播获取第一信道资源, 通过第二基 站的专用信令获取第二信道资源, 用户设备根据第一基站的第一控制信 息及第一信道资源生成第一前导, 根据第二基站的第二控制信息及第二 信道资源生成第二前导; 并将第一前导置于第一帧结构中第一个具有第 一信道资源的子帧上, 将第二前导置于第二帧结构中第一个具有第二信 道资源的子帧上。
其中, 信道资源用于在帧结构中的子帧上承载前导。
当第一基站发送包含专用的前导指示参数的第一控制信息至用户设 备时, 用户设备根据在该第一控制信息中获取的专用的前导指示参数及 第一信道资源, 生成专用的第一前导, 准备向第一基站发起基于非竟争 的随机接入; 当用户设备需要向第一基站发起基于竟争的随机接入时, 第一基站发送包含公共的前导指示参数的第一控制信息至用户设备, 用 户设备根据在该第一控制信息中获取的公共的前导指示参数及第一信道 资源, 生成公共的第一前导, 准备向第一基站发起基于竟争的随机接入。
当第二基站发送包含专用的前导指示参数的第二控制信息至用户设 备时, 用户设备根据在该第二控制信息中获取的专用的前导指示参数及 第二信道资源生成专用的第二前导, 准备向第二基站发起基于非竟争的 随机接入; 当用户设备需要向第二基站发起基于竟争的随机接入时, 第 二基站发送包含公共的前导指示参数的第二控制信息至用户设备, 用户 设备根据在该第二控制信息中获取的公共的前导指示参数及第二信道资 源生成公共的第二前导, 准备向第二基站发起基于竟争的随机接入。
904、 用户设备分别发送第一帧结构及第二帧结构, 其中, 将第一帧 结构发送至第一基站, 将第二帧结构发送至第二基站。
905、 第一基站接收第一帧结构, 在第一帧结构获取第一前导, 以便 用户设备根据第一前导与第一基站进行随机接入。
906、 第二基站接收第二帧结构, 在第一帧结构获取第二前导, 以便 用户设备根据第二前导与基站进行随机接入。
步骤 903用户设备在第一帧结构中设置第一前导, 在第二帧结构中 设置第二前导, 具体的包括以下几种方案:
方案一: 当第一帧结构中第一个具有第一信道资源的子帧的发送时 间和第二帧结构中第一个具有第二信道资源的子帧的发送时间没有交叠 时 (发送时间有交叠有两种情况, 以情况一为例进行说明, 具体见上述 实施例, 此处不再复述), 用户设备将第一前导置于第一帧结构中第一个 具有第一信道资源的子帧上, 将第二前导置于第二帧结构中第一个具有 第二信道资源的子帧上。 如图 1 0 ( a ) 所示, 具有第一信道资源的子帧 为第一帧结构中的子帧 2、 子帧 5及子帧 8 , 具有第二信道资源的子帧为 第二帧结构中的子帧 4、 及子帧 6 , 此时, 第一帧结构中第一个具有第一 信道资源的子帧为子帧 2 , 第二帧结构中第一个具有第二信道资源的子 帧为子帧 4 , 第一帧结构的子帧 1与第二帧结构的子帧 4 的发送时间没 有交叠, 如图 10 ( b ) 所示, 用户设备将第一前导置于第一帧结构中第 一个具有第一信道资源的子帧上, 即第一帧结构的子帧 2 上, 将第二前 导置于第二帧结构中第一个具有第二信道资源的子帧上, 即子帧第二帧 结构的 4上。
方案二: 当第一帧结构中第一个具有第一信道资源的子帧的发送时 间和第二帧结构中第一个具有第二信道资源的子帧的发送时间有交叠 时, 用户设备选择第一前导和第二前导中的一个, 将另一个前导置于该 另一个前导对应的帧结构中第一个具有该另一个前导对应的信道资源的 子帧上; 将该选择的前导置于下一具有该选择的前导对应的信道资源的 子帧上。 参照图 11所示, 当第一帧结构中第一个具有第一信道资源的子 帧的发送时间和第二帧结构中第一个具有第二信道资源的子帧的发送时 间有交叠时, 如图 11 ( a ) 所示, 具有第一信道资源的子帧为第一帧结 构中的子帧 2、 子帧 5及子帧 8, 具有第二信道资源的子帧为第二帧结构 中的子帧 2、 子帧 4、 子帧 6及子帧 8; 此时, 如图 11 ( b) 所示, 用户 设备的 MAC ( Medium Access Control, 媒体控制子层) 发现当第一帧结 构中第一个具有第一信道资源的子帧为子帧 2, 第二帧结构中第一个具 有第二信道资源的子帧为子帧 2, 即第一帧结构中第一个具有第一信道 资源的子帧的和第二帧结构中第一个具有第二信道资源的子帧位于同一 时隙, 则 MAC选择第一前导和第二前导中的一个 (此处以选取第二前导 为例进行说明),将第一前导置于第一帧结构中的第一个具有第一信道资 源的子帧上, 即第一帧结构的子帧 2 上, 将第二前导置于下一具有第二 信道资源的子帧上, 即第二帧结构的子帧 4上。
具体的, MAC选择第一前导和第二前导中的一个, 可以为以下方法: 选择第一前导, 将第二前导置于第二信道资源对应的下一子帧; 选择第二前导, 将第一前导置于第一信道资源对应的下一子帧; 选择专用的前导, 将公共的前导置于公共的前导对应信道资源对应 的下一子帧上;
选择下一具有信道资源的子帧出现的更早的前导, 将下一具有信道 资源的子帧出现的更晚前导置于第一个具有该前导对应的信道资源的子 帧上。
方案三: 当第一帧结构中第一个具有第一信道资源的子帧的发送时 间和第二帧结构中第一个具有第二信道资源的子帧的发送时间有交叠 时; 用户设备计算发送第一帧结构中第一个具有第一信道资源的子帧和 第二帧结构中第一个具有第二信道资源的子帧的功率, 当发送第一帧结 构中第一个具有第一信道资源的子帧和第二帧结构中第一个具有第二信 道资源的子帧的功率小于等于用户设备的阈值发射功率时, 用户设备将 第一前导置于第一帧结构中第一个具有第一信道资源的子帧上, 将第二 前导置于第二帧结构中第一个具有第二信道资源的子帧上; 当发送包括 第一前导和第二前导的子帧的功率大于用户设备的阈值发射功率时, 用 户设备选择第一前导和第二前导中的一个, 将另一个前导置于该另一个 前导对应的帧结构中第一个具有该另一个前导对应的信道资源的子帧 上; 将该选择的前导置于下一具有该选择的前导对应的信道资源的子帧 上。 如图 1 2 所示, 1 2 ( a ) 中具有第一信道资源的子帧为第一帧结构中 的子帧 2、 子帧 5及子帧 8 , 具有第二信道资源的子帧为第二帧结构中的 子帧 2、 子帧 4、 子帧 6及子帧 8 ; 此时, 第一帧结构中第一个具有第一 信道资源的子帧为子帧 2 , 第二帧结构中第一个具有第二信道资源的子 帧为子帧 2 , 即第一帧结构中第一个具有第一信道资源的子帧的和第二 帧结构中第一个具有第二信道资源的子帧位于同一时隙, 用户设备的物 理层计算发送第一帧结构中第一个具有第一信道资源的子帧的和第二帧 结构中第一个具有第二信道资源的子帧的功率, 即计算发送第一帧结构 的子帧 2和第二帧结构的子帧 1的功率。
当发送第一帧结构的子帧 2和第二帧结构的子帧 2的功率小于等于 用户设备的阈值发射功率时, 如图 1 2 ( b ) 所示, MAC将第一前导置于第 一帧结构中第一个具有第一信道资源的子帧上, 即第一帧结构的子帧 2 上, 将第二前导置于第二帧结构中第一个具有第二信道资源的子帧上, 即第二帧结构的子帧 2上; 当发送第一帧结构的子帧 2和第二帧结构的 子帧 2的功率大于用户设备的阈值发射功率时, 如图 1 2 ( c ) 所示, MAC 选择第一前导和第二前导中的一个 (此处以选取第二前导为例进行说 明), MAC将第一前导置于第一帧结构中的第一个具有第一信道资源的子 帧上, 即第一帧结构的子帧 2 上, 将第二前导置于下一具有第二信道资 源的子帧上, 即第二帧结构的子帧 4上。
具体的, MAC选择第一前导和第二前导中的一个, 可以为以下方法: 选择第二前导, 将第二前导置于第二信道资源对应的下一子帧; 选择第一前导, 将第一前导置于第一信道资源对应的下一子帧; 选择专用的前导, 将公共的前导置于公共的前导对应信道资源对应 的下一子帧上。
方案四: 当当任一前导对应的信道资源所在的子帧的发送时间与另 一前导对应的消息三所占用的信道资源所在的子帧的发送时间在有交 叠, 且该另一前导为公共的前导时; 用户设备计算发送任一前导对应的 信道资源所在的子帧和另一前导对应的消息三所占用的信道资源所在的 子帧的功率, 其中, 消息三可以为公共的前导的竟争解决标识。 当发送 任一前导对应的信道资源所在的子帧和另一前导对应的消息三所占用的 信道资源所在的子帧的功率小于等于用户设备的阈值发射功率时, 用户 设备将该任一前导置于该任一前导对应的信道资源所在的子帧上, 将另 一前导对应的消息三置于另一前导对应的消息三所占用的信道资源所在 的子帧上。
当发送任一前导对应的信道资源所在的子帧和另一前导对应的消, ¾ 三所占用的信道资源所在的子帧的功率大于用户设备的阈值发射功率 时, 用户设备将另一前导对应的消息三置于另一前导对应的消息三所占 用的信道资源所在的子帧上, 将任一前导置于下一具有该任一前导对应 的信道资源的子帧上。
或者, 用户设备将任一前导置于该任一前导对应的信道资源所在的 子帧上, 将另一前导对应的消息三置于另一前导对应的消息三所占用的 信道资源所在的子帧上, 降低另一前导对应的消息三的发送功率后将第 一帧结构发送至第一基站, 将第二帧结构发送至第二基站。
或者, 用户设备只将任一前导置于该任一前导对应的信道资源所在 的子帧上。 即当第一前导为公共的前导时, 用户设备在第一帧结构中设置消息 三, 和\或当第二前导为公共的前导时, 用户设备在第二帧结构中设置消 息三(此处以第一前导为公共的前导), 当第二前导对应的信道资源 (即 第二信道资源) 所在的子帧的发送时间与第一前导对应的消息三所占用 的信道资源 (即第一信道资源) 所在的子帧的发送时间有交叠, 如图 13 所示, 其中 13 ( a ) 中, 第一信道资源所在的子帧为第一帧结构中的子 帧 2, 第二信道资源所在的子帧为第二帧结构中的子帧 2、 子帧 4、 子帧 6及子帧 8, 第一信道资源所在的子帧为第一帧结构的子帧 2, 第二信道 资源所在的子帧为第二帧结构的子帧 2, 第一信道资源所在的子帧与第 二信道资源所在的子帧位于同一时隙; 此时, 用户设备的物理层计算发 送第二前导对应的信道资源所在的子帧和第一前导对应的消息三所占用 的信道资源所在的子帧的功率, 即发送第一帧结构的子帧 2 和第二帧结 构的子帧 2的功率。
当发送第一帧结构的子帧 2和第二帧结构的子帧 2的功率小于等于 用户设备的阈值发射功率时, 如图 13 ( b ) 所示, MAC将第一前导的消息 三置于第一帧结构的子帧 2和第二前导置于第二帧结构的子帧 2上。 当 发送第一帧结构的子帧 2和第二帧结构的子帧 2 的功率大于用户设备的 阈值发射功率时, 如图 13 ( c ) 所示, MAC将第二前导置于第二信道资源 对应的下一子帧, 即子帧 4上。
或者如图 13 ( d )所示, MAC将第一前导的消息三置于第一帧结构的 子帧 2和第二前导置于第二帧结构的子帧 2上, 降低第一帧结构的子帧 2的发送功率。
或者如图 13 ( e ) 所示, MAC只将第二前导置于第二帧结构的子帧 2 上, 取消第一前导的消息三的发送。
参照图 14所示的方法, 在步骤 801之前还包括:
901a, 第一基站将第一信道资源发送至第二基站。
901b, 第二基站接收第一基站发送的第一信道资源; 并根据该第一 信道资源为用户设备配置第二信道资源, 其中第二信道资源承载的子帧 与第一信道资源承载的子帧在时隙上不相同。 或者, 901 d、 第二基站接收第一基站发送的第一信道资源, 将第二 信道资源中与第一信道资源不相交的信道资源或者不相交的信道资源的 部分发送至用户设备。
具体的, 如图 15所示, 为了避免用户设备出现第一帧结构中第一个 具有第一信道资源的子帧的发送时间和第二帧结构中第一个具有第二信 道资源的子帧的发送时间有交叠的情况, 第一基站与第二基站经过交互 协商各自的 PRACH资源配置,使两个基站小区的 PRACH资源不发生冲突, 第一基站发送包括第一信道资源的系统广播至第二级站。
如 15 ( a )所示, 第一信道资源为第一帧结构的子帧 2、 子帧 5和子 帧 8。
参照步骤 903 , 由于第二基站通过专用信令配置 UE可用的 PRACH , 因此, 第二基站接收作为第一基站发送的第一信道资源后, 可以根据第 一信道资源为用户设备配置第二信道资源, 即第二基站只将与第一信道 资源不冲突的信道资源配置为第二信道资源, 如图 15 ( a ) 所示, 配置 第二信道资源为第二帧结构的子帧 4 和子帧 6 , 其中, 与第一信道资源 不冲突的信道资源配置承载的子帧和第一信道资源承载的子帧在时隙上 不相同。
用户设备, 如图 15 ( b ) 所示, 根据第一信道资源将第一前导置于 第一帧结构的子帧 2 上; 根据第二信道资源, 将第二前导置于第二帧结 构的子帧 4 上, 此时, 第一帧结构中第一个具有第一信道资源的子帧的 发送时间和第二帧结构中第一个具有第二信道资源的子帧的发送时间没 有交叠。
在上述第一基站与第二基站经过交互协商各自的 PRACH资源配置, 使两个基站小区的 PRACH 资源不发生冲突的过程中, 当第一基站的信道 资源需求量大时, 会发生第一信道资源占用每个子帧的情况, 可选的, 为了避免用户设备出现第一帧结构中第一个具有第一信道资源的子帧的 发送时间和第二帧结构中第一个具有第二信道资源的子帧的发送时间有 交叠的情况, 第二基站接收第一基站发送的第一信道资源, 将第二信道 资源中与第一信道资源不相交的信道资源或者不相交的信道资源的部分 发送至用户设备。
具体的, 如图 16所示, 第一信道资源为第一帧结构的子帧 2、 子帧 5和子帧 8 , 第二信道资源为第二帧结构的子帧 2、 子帧 4和子帧 6。
参照步骤 903 , 由于第二基站通过专用信令配置 UE可用的 PRACH , 因此, 第二基站接收作为第一基站发送的第一信道资源后, 将第二信道 资源中与第一信道资源不相交的信道资源 (即子帧 4和子帧 6 ), 配置给 UE ; 或者将与第一信道资源不相交的信道资源的部分 (子帧 4或子帧 6 ) 配置给 UE。
用户设备, 如图 16 ( b ) 所示, 根据第一信道资源将第一前导置于 第一帧结构的子帧 2 上; 根据专用信令配置的第二信道资源, 将第二前 导置于第二帧结构的子帧 4 (或者子帧 6 )上, 此时, 第一帧结构中第一 个具有第一信道资源的子帧的发送时间和第二帧结构中第一个具有第二 信道资源的子帧的发送时间没有交叠。
本发明的实施例提供的数据传输的方法、 设备与系统, 通过实现用 户设备与多个基站同时进行随机接入, 实现了用户设备与基站间的并行 随机接入方式, 降低了用户设备与多个基站进行随机接入的延迟, 提高 了用户设备与多个基站进行数据业务传输的速度。
通过以上的实施方式的描述, 所属领域的技术人员可以清楚地了解 到本发明可以用硬件实现, 或固件实现, 或它们的组合方式来实现。 当 使用软件实现时, 可以将上述功能存储在计算机可读介质中或作为计算 机可读介质上的一个或多个指令或代码进行传输。 计算机可读介质包括 计算机存储介质和通信介质, 其中通信介质包括便于从一个地方向另一 个地方传送计算机程序的任何介质。 存储介质可以是计算机能够存取的 任何可用介质。 以此为例但不限于: 计算机可读介质可以包括 RAM、 ROM , EEPR0M、 CD-ROM或其他光盘存储、 磁盘存储介质或者其他磁存储设备、 或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并 能够由计算机存取的任何其他介质。 此外。 任何连接可以适当的成为计 算机可读介质。 例如, 如果软件是使用同轴电缆、 光纤光缆、 双绞线、 数字用户线(DSL )或者诸如红外线、 无线电和微波之类的无线技术从网 站、 服务器或者其他远程源传输的, 那么同轴电缆、 光纤光缆、 双绞线、
DSL 或者诸如红外线、 无线和微波之类的无线技术包括在所属介质的定 影中。 如本发明所使用的, 盘(Disk)和碟(disc) 包括压缩光碟(CD)、 激光碟、 光碟、 数字通用光碟 (DVD)、 软盘和蓝光光碟, 其中盘通常磁 性的复制数据, 而碟则用激光来光学的复制数据。 上面的组合也应当包 括在计算机可读介质的保护范围之内。
总之, 以上所述仅为本发明技术方案的较佳实施例而已, 并非用于 限定本发明的保护范围。 凡在本发明的精神和原则之内, 所作的任何修 改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种数据传输的方法, 其特征在于:
用户设备获取第一前导和第二前导, 所述第一前导对应第一基站的主 时间提前组 PTAG的小区集合,所述第二前导对应第二基站的辅时间提前组 STAG的小区集合;
所述用户设备向所述第一基站发送所述第一前导, 用于根据所述第 ― 前导向所述第一基站发起随机接入;
所述用户设备向所述第二基站发送所述第二前导, 用于根据所述第二 前导向所述第二基站发起随机接入。
2、 根据权利要求 1所述的方法, 其特征在于, 还包括:
所述用户设备获取第一信道资源, 所述第一信道资源为所述第一基站 的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于承载所述 第一前导的子帧集合;
所述用户设备获取第二信道资源, 所述第二信道资源为所述第二基站 的物理随机接入信道资源, 所述第二信道资源包括待用于承载所述第二前 导的子帧集合。
3、 根据权利要求 2所述的方法, 其特征在于:
所述用户设备获取第一信道资源, 具体包括:
所述用户设备通过系统广播消息接收所述第一基站发送的所述第 ― 信道资源;
所述用户设备获取第二信道资源, 具体包括:
所述用户设备通过专用信令接收所述第二基站发送的所述第二信道 资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
4、 根据权利要求 1或 3所述的方法, 其特征在于, 所述用户设备向 第一基站发送所述第一前导和向第二基站发送第二前导, 具体包括:
所述用户设备确定所述第一信道资源中承载所述第一前导的子帧和 所述第二信道资源中承载所述第二前导的子帧, 所述第一前导的发送时间 与所述第二前导的发送时间没有交叠;
所述用户设备通过所述承载所述第一前导的子帧向所述第一基站发 送所述第一前导;
所述用户设备通过所述承载所述第二前导的子帧向所述第二基站发 送所述第二前导。
5、 根据权利要求 2或 3所述的方法, 其特征在于, 当所述第一前导 的发送时间与所述第二前导的发送时间有交叠时, 所述方法还包括:
所述用户设备推迟向所述第一基站发送所述第一前导的时间至其他 子帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
所述用户设备推迟向所述第二基站发送所述第二前导的时间至其他 子帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没有交 叠;
或者,
当所述第一前导为公共前导时, 所述用户设备推迟向所述第一基站发 送对应于竟争的随机接入的所述第一前导的时间至其他子帧, 以便于所述 第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二前导为公共前导时, 所述用户设备推迟向所述第二基站发 送对应于竟争的随机接入的所述第二前导的时间至其他子帧, 以便于所述 第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述用户设备推迟向所述第一基站发送所述第一前导的时 间至待用于承载所述第一前导的子帧的下一个子帧, 以便于所述第一前导 的发送时间与所述第二前导的发送时间没有交叠;
或者, 当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述用户设备推迟向所述第二基站发送所述第二前导的时 间至待用于承载所述第二前导的子帧的下一个子帧, 以便于所述第一前导 的发送时间与所述第二前导的发送时间没有交叠。
6、 根据权利要求 1或 3所述的方法, 其特征在于, 所述用户设备向 第一基站发送所述第一前导和向第二基站发送第二前导, 具体包括:
所述用户设备选择所述第一信道资源中承载所述第一前导的子帧和 所述第二信道资源中承载所述第二前导的子帧, 所述承载所述第一前导的 子帧的发射功率和所述承载所述第二前导的子帧的发射功率的总和小于等 于所述用户设备的最大发射功率;
所述用户设备通过所述承载所述第一前导的子帧向所述第一基站发 送所述第一前导;
所述用户设备通过所述承载所述第二前导的子帧向所述第二基站发 送所述第二前导。
7、 根据权利要求 2 或 3所述的方法, 其特征在于:
当所述第一前导为公共前导时, 所述用户设备向第一基站发送所述第 一前导, 具体包括:
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述用户设备推迟向所述第一基站发送对应于所述第一前导的消息 三的时间至其他子帧, 所述对应于所述第一前导的消息三的发送时间和所 述第二前导的发送时间没有交叠;
或者,
所述用户设备调整所述承载对应于所述第一前导的消息三的子帧的 发射功率, 所述调整的承载所述对应于所述第一前导的消息三的子帧的发 射功率和所述第二信道资源中承载所述第二前导的子帧的发射功率的总和 小于等于所述用户设备的最大发射功率;
或者, 所述用户设备取消所述消息三的发送, 所述消息三对应于所述第一前 导;
当所述第二前导为公共前导时, 所述用户设备向第二基站发送所述第 二前导, 具体包括:
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时:
所述用户设备推迟向所述第二基站发送对应于所述第二前导的消息 三的时间至其他子帧, 所述对应于所述第二前导的消息三的发送时间和所 述第一前导的发送时间没有交叠;
或者,
所述用户设备调整所述承载对应于所述第二前导的消息三的子帧的 发射功率, 所述调整的承载所述对应于所述第二前导的消息三的子帧的发 射功率和所述第一信道资源中承载所述第一前导的子帧的发射功率的总和 小于等于所述用户设备的最大发射功率;
或者,
所述用户设备取消所述消息三的发送, 所述消息三对应于所述第二前 导。
8、 根据权利要求 1 至 3任一项所述的方法, 其特征在于, 所述用户 设备向所述第一基站发送所述第一前导和向所述第二基站发送第二前导, 具体包括:
所述用户设备同时向所述第一基站发送所述第一前导和向所述第二 基站发送所述第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中, 向所述第二基站 发送所述第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中, 向所述第一基站 发送所述第一前导。
9、 一种数据传输的方法, 其特征在于, 包括: 第一基站接收所述用户设备发送的第一前导, 所述第一前导对应所述 第一基站的主时间提前组 PTAG的小区集合;
在用户设备与第二基站进行随机接入过程中, 所述第一基站根据所述 第一前导与所述用户设备进行随机接入;
其中, 所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
1 0、 根据权利要求 9所述的方法, 其特征在于, 还包括:
所述第一基站配置第一信道资源, 所述第一信道资源为所述第一基站 的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于承载所述 第一前导的子帧集合。
1 1、 根据权利要求 1 0所述的方法, 其特征在于, 还包括:
所述第一基站向所述用户设备发送系统广播或专用信令, 所述系统广 播包括所述第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前导 的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集合在 时隙上不相同。
1 2、 根据权利要求 1 0或 1 1所述的方法, 其特征在于, 所述第一基站 配置第一信道资源, 具体包括:
所述第一基站接收所述第二基站发送的第二信道资源;
所述第一基站根据所述第二信道资源为所述用户设备配置所述第一 信道资源。
1 3、 根据权利要求 1 0所述的方法, 其特征在于, 还包括:
所述第一基站接收所述第二基站发送的第二信道资源;
所述第一基站向所述用户设备发送所述第一信道资源中与所述第二 信道资源不相交的部分, 其中所述第一信道资源中与所述第二信道资源不 相交的部分中待用于承载所述第一前导的子帧集合和所述第二信道资源中 待用于承载所述第二前导的子帧集合在时隙上不相同。
1 4、 一种用户设备, 其特征在于, 包括处理单元和发送单元: 所述处理单元用于获取第一前导和第二前导, 所述第一前导对应第一 基站的主时间提前组 PTAG的小区集合,所述第二前导对应第二基站的辅时 间提前组 STAG的小区集合;
所述发送单元用于向所述第一基站发送所述处理单元获取的所述第 一前导;
所述处理单元还用于根据所述第一前导向所述第一基站发起随机接 入;
所述发送单元还用于向所述第二基站发送所述处理单元获取的所述 第二前导;
所述处理单元还用于根据所述第二前导向所述第二基站发起随机接 入。
1 5、 根据权利要求 1 4所述的用户设备, 其特征在于, 所述用户设备, 还包括接收单元;
所述接收单元, 用于获取第一信道资源, 所述第一信道资源为所述第 一基站的物理随机接入信道 PRACH资源, 所述第一信道资源包括待用于承 载所述第一前导的子帧集合;
所述接收单元, 还用于获取第二信道资源, 所述第二信道资源为所述 第二基站的物理随机接入信道资源, 所述第二信道资源包括待用于承载所 述第二前导的子帧集合。
1 6、 根据权利要求 1 5所述的用户设备, 其特征在于:
所述接收单元具体用于通过系统广播消息接收所述第一基站发送的 所述第一信道资源;
所述接收单元具体用于通过专用信令接收所述第二基站发送的所述 第二信道资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
1 7、 根据权利要求 1 5或 1 6所述的用户设备, 其特征在于:
所述处理单元, 具体用于确定所述第一信道资源中承载所述第一前导 的子帧和所述第二信道资源中承载所述第二前导的子帧, 所述第一前导的 发送时间与所述第二前导的发送时间没有交叠; 所述发送单元具体用于通过所述处理单元确定的承载所述第一前导 的子帧向所述第一基站发送所述第一前导;
所述发送单元具体用于通过所述处理单元确定的承载所述第二前导 的子帧向所述第二基站发送所述第二前导。
1 8、 根据权利要求 1 5或 1 6所述的用户设备, 其特征在于, 当所述第 一前导的发送时间与所述第二前导的发送时间有交叠时, 包括:
所述处理单元, 具体还用于推迟向所述第一基站发送所述第一前导的 时间至其他子帧, 以便于所述第一前导的发送时间与所述第二前导的发送 时间没有交叠;
或者,
所述处理单元, 具体还用于推迟向所述第二基站发送所述第二前导的 时间至其他子帧, 以便于所述第一前导的发送时间与所述第二前导的发送 时间没有交叠;
或者,
当所述第一前导为公共前导时, 所述处理单元, 具体还用于推迟向所 述第一基站发送对应于竟争的随机接入的所述第一前导的时间至其他子 帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没有交叠; 或者,
当所述第二前导为公共前导时, 所述处理单元, 具体还用于推迟向所 述第二基站发送对应于竟争的随机接入的所述第二前导的时间至其他子 帧,以便于所述第一前导的发送时间与所述第二前导的发送时间没有交叠; 或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述处理单元具体用于推迟向所述第一基站发送所述第一 前导的时间至待用于承载所述第一前导的子帧的下一个子帧, 以便于所述 第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述处理单元具体用于推迟向所述第二基站发送所述第二 前导的时间至待用于承载所述第二前导的子帧的下一个子帧, 以便于所述 第一前导的发送时间与所述第二前导的发送时间没有交叠。
1 9、 根据权利要求 1 5或 1 6所述的用户设备, 其特征在于,
所述处理单元, 具体用于选择所述第一信道资源中承载所述第一前导 的子帧和所述第二信道资源中承载所述第二前导的子帧, 所述承载所述第 一前导的子帧的发射功率和所述承载所述第二前导的子帧的发射功率的总 和小于等于所述用户设备的最大发射功率;
所述发送单元具体用于通过所述处理单元选择的承载所述第一前导 的子帧向所述第一基站发送所述第一前导;
所述发送单元具体用于通过所述处理单元选择的承载所述第二前导 的子帧向所述第二基站发送所述第二前导。
2 0、 根据权利要求 1 5或 1 6所述的用户设备, 其特征在于,
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述处理单元, 具体用于推迟向所述第一基站发送对应于所述第一前 导的消息三的时间至其他子帧, 所述对应于所述第一前导的消息三的发送 时间和所述第二前导的发送时间没有交叠;
或者,
所述处理单元, 具体用于调整所述承载对应于所述第一前导的消息三 的子帧的发射功率, 所述调整的承载所述对应于所述第一前导的消息三的 子帧的发射功率和所述第二信道资源中承载所述第二前导的子帧的发射功 率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理单元, 具体用于取消所述消息三的发送, 所述消息三对应于 所述第一前导;
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时: 所述处理单元, 具体用于推迟向所述第二基站发送对应于所述第二前 导的消息三的时间至其他子帧, 所述对应于所述第二前导的消息三的发送 时间和所述第一前导的发送时间没有交叠;
或者,
所述处理单元, 具体用于调整所述承载对应于所述第二前导的消息三 的子帧的发射功率, 所述调整的承载所述对应于所述第二前导的消息三的 子帧的发射功率和所述第一信道资源中承载所述第一前导的子帧的发射功 率的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理单元, 具体用于取消所述消息三的发送, 所述消息三对应于 所述第二前导。
2 1、 根据权利要求 1 4、 1 5或 1 6所述的用户设备, 其特征在于: 所述发送单元具体用于同时向所述第一基站发送所述处理单元获取 的第一前导和向所述第二基站发送所述处理单元获取的第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中, 所述发送单元具 体用于向所述第二基站发送所述处理单元获取的第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中, 所述发送单元具 体用于向所述第一基站发送所述处理单元获取的第一前导。
2 2、 一种基站, 其特征在于, 所述基站包括接收单元和接入单元: 所述接收单元用于, 接收所述用户设备发送的第一前导, 所述第一前 导对应所述基站的主时间提前组 PTAG的小区集合;
所述接入单元, 用于在用户设备与第二基站进行随机接入过程中, 根 据所述接收单元接收的第一前导与所述用户设备进行随机接入;
其中, 所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
2 3、 根据权利要求 22所述的基站, 其特征在于;
所述接入单元还用于为所述用户设备配置第一信道资源, 所述第一信 道资源为所述基站的物理随机接入信道 PRACH资源, 所述第一信道资源包 括待用于承载所述第一前导的子帧集合。
24、 根据权利要求 11 所述的基站, 其特征在于, 所述基站还包括发 送单元:
所述发送单元用于向所述用户设备发送系统广播或专用信令, 所述系 统广播包括所述接入单元配置的第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前导 的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集合在 时隙上不相同。
25、 根据权利要求 22或 23所述的基站, 其特征在于:
所述接收单元还用于接收所述第二基站发送的第二信道资源; 所述接入单元还用于根据所述接收单元接收的第二信道资源为所述 用户设备配置所述第一信道资源。
26、 根据权利要求 22或 23所述的基站, 其特征在于:
所述接收单元还用于接收所述第二基站发送的第二信道资源; 所述发送单元还用于向所述用户设备发送所述第一信道资源中与所 述接收单元接收的第二信道资源不相交的部分, 其中所述第一信道资源中 与所述第二信道资源不相交的部分中待用于承载所述第一前导的子帧集合 和所述第二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相 同。
27、 一种用户设备, 其特征在于, 所述用户设备包括: 至少一个处 理器、 存储器、 发送器、 接收器及数据总线, 所述数据总线用于实现 所述处理器、 存储器、 接收器及所述发送器之间的连接及通讯;
其中所述处理器用于通过所述接收器获取第一前导和第二前导, 所述 第一前导对应第一基站的主时间提前组 PTAG的小区集合,所述第二前导对 应第二基站的辅时间提前组的 STAG小区集合;
所述处理器还用于通过所述发送器向所述第一基站发送所述第一前 导, 用于根据所述第一前导向所述第一基站发起随机接入;
所述处理器还用于通过所述发送器向所述第二基站发送所述第二前 导, 用于根据所述第二前导向所述第二基站发起随机接入。
28、 根据权利要求 27所述的用户设备, 其特征在于:
所述处理器还用于通过所述接收器获取第一信道资源, 所述第一信道 资源为所述第一基站的物理随机接入信道 PRACH资源, 所述第一信道资源 包括待用于承载所述第一前导的子帧集合;
所述处理器还用于通过所述接收器获取第二信道资源, 所述第二信道 资源为所述第二基站的物理随机接入信道资源, 所述第二信道资源包括待 用于承载所述第二前导的子帧集合。
29、 根据权利要求 28所述的用户设备, 其特征在于:
所述处理器还用于通过所述接收器接收的系统广播消息接收所述第 一基站发送的所述第一信道资源;
所述处理器还用于通过所述接收器接收的专用信令接收所述第二基 站发送的所述第二信道资源;
所述第一信道资源中待用于承载所述第一前导的子帧集合与所述第 二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相同。
30、 根据权利要求 28或 29所述的用户设备, 其特征在于, 所述处理 器, 还用于:
确定所述第一信道资源中承载所述第一前导的子帧和所述第二信道 资源中承载所述第二前导的子帧, 所述第一前导的发送时间与所述第二前 导的发送时间没有交叠;
所述处理器还用于经所述发送器通过所述承载所述第一前导的子帧 向所述第一基站发送所述第一前导;
所述处理器还用于经所述发送器通过所述承载所述第二前导的子帧 向所述第二基站发送所述第二前导。
31、 根据权利要求 28或 29所述的用户设备, 其特征在于, 当所述第 一前导的发送时间与所述第二前导的发送时间有交叠时:
所述处理器还用于推迟向所述第一基站发送所述第一前导的时间至 其他子帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没 有交叠; 或者,
所述处理器还用于推迟向所述第二基站发送所述第二前导的时间至 其他子帧, 以便于所述第一前导的发送时间与所述第二前导的发送时间没 有交叠;
或者,
当所述第一前导为公共前导时, 所述处理器还用于推迟向所述第一基 站发送对应于竟争的随机接入的所述第一前导的时间至其他子帧, 以便于 所述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二前导为公共前导时, 所述处理器还用于推迟向所述第二基 站发送对应于竟争的随机接入的所述第二前导的时间至其他子帧, 以便于 所述第一前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第一信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第二信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述处理器还用于推迟向所述第一基站发送所述第一前导 的时间至待用于承载所述第一前导的子帧的下一个子帧, 以便于所述第 ― 前导的发送时间与所述第二前导的发送时间没有交叠;
或者,
当所述第二信道资源中待用于承载所述第一前导的子帧的下一个子 帧的时间早于所述第一信道资源中待用于承载所述第二前导的子帧的下一 个子帧的时间, 所述处理器还用于推迟向所述第二基站发送所述第二前导 的时间至待用于承载所述第二前导的子帧的下一个子帧, 以便于所述第一 前导的发送时间与所述第二前导的发送时间没有交叠。
32、 根据权利要求 28或 29所述的用户设备, 其特征在于:
所述处理器具体用于选择所述第一信道资源中承载所述第一前导的 子帧和所述第二信道资源中承载所述第二前导的子帧, 所述承载所述第一 前导的子帧的发射功率和所述承载所述第二前导的子帧的发射功率的总和 小于等于所述用户设备的最大发射功率; 所述处理器还用于经所述发送器通过所述承载所述第一前导的子帧 向所述第一基站发送所述第一前导;
所述处理器还用于经所述发送器通过所述承载所述第二前导的子帧 向所述第二基站发送所述第二前导。
33、 根据权利要求 28或 29所述的用户设备, 其特征在于:
当所述对应于所述第一前导的消息三的发送时间和所述第二前导的 发送时间有交叠时:
所述处理器具体用于推迟向所述第一基站发送对应于所述第一前导 的消息三的时间至其他子帧, 所述对应于所述第一前导的消息三的发送时 间和所述第二前导的发送时间没有交叠;
或者,
所述处理器具体用于调整所述承载对应于所述第一前导的消息三的 子帧的发射功率, 所述调整的承载所述对应于所述第一前导的消息三的子 帧的发射功率和所述第二信道资源中承载所述第二前导的子帧的发射功率 的总和小于等于所述用户设备的最大发射功率;
或者,
所述处理器具体用于取消所述消息三的发送, 所述消息三对应于所述 第一前导;
当所述对应于所述第二前导的消息三的发送时间和所述第一前导的 发送时间有交叠时:
所述处理器具体用于推迟向所述第二基站发送对应于所述第二前导 的消息三的时间至其他子帧, 所述对应于所述第二前导的消息三的发送时 间和所述第一前导的发送时间没有交叠;
或者,
所述处理器具体用于调整所述承载对应于所述第二前导的消息三的 子帧的发射功率, 所述调整的承载所述对应于所述第二前导的消息三的子 帧的发射功率和所述第一信道资源中承载所述第一前导的子帧的发射功率 的总和小于等于所述用户设备的最大发射功率;
或者, 所述处理器具体用于取消所述消息三的发送, 所述消息三对应于所述 第二前导。
34、 根据权利要求 27、 28或 29所述的用户设备, 其特征在于: 所述处理器具体用于通过所述发送器同时向所述第一基站发送所述 第一前导和向所述第二基站发送所述第二前导;
或者,
所述用户设备与所述第一基站进行随机接入过程中, 所述处理器具体 用于通过所述发送器向所述第二基站发送所述第二前导;
或者,
所述用户设备与所述第二基站进行随机接入过程中, 所述处理器具体 用于通过所述发送器向所述第一基站发送所述第一前导。
35、 一种基站, 其特征在于, 所述基站包括: 至少一个处理器、 存 储器、 接收器及数据总线, 所述数据总线用于实现所述处理器、 存储 器及所述接收器之间的连接及通讯;
所述处理器, 用于通过所述接收器接收所述用户设备发送的第一前 导, 所述第一前导对应所述第一基站的主时间提前组 PTAG的小区集合; 所述处理器, 还用于在用户设备与第二基站进行随机接入过程中, 根 据所述第一前导与所述用户设备进行随机接入;
其中, 所述用户设备与所述第二基站进行随机接入所需的第二前导对 应所述第二基站的辅时间提前组 STAG的小区集合。
36、 根据权利要求 35所述的基站, 其特征在于;
所述处理器还用于为所述用户设备配置第一信道资源, 所述第一信道 资源为所述基站的物理随机接入信道 PRACH资源, 所述第一信道资源包括 待用于承载所述第一前导的子帧集合。
37、 根据权利要求 36 所述的基站, 其特征在于, 所述基站还包括与 所述数据总线连接的发送器;
所述处理器通过所述发送器向所述用户设备发送系统广播或专用信 令, 所述系统广播包括所述第一信道资源;
其中, 所述用户设备获取的第二信道资源中待用于承载所述第二前导 的子帧集合与所述第一信道资源中待用于承载所述第一前导的子帧集合在 时隙上不相同。
38、 根据权利要求 36或 37所述的基站, 其特征在于:
所述处理器还用于通过所述接收器接收所述第二基站发送的第二信 道资源;
所述处理器还用于根据所述第二信道资源为所述用户设备配置所述 第一信道资源。
39、 根据权利要求 36或 37所述的基站, 其特征在于:
所述处理器还用于通过所述接收器接收所述第二基站发送的第二信 道资源;
所述处理器还用于通过所述发送器向所述用户设备发送所述第一信 道资源中与所述第二信道资源不相交的部分, 其中所述第一信道资源中与 所述第二信道资源不相交的部分中待用于承载所述第一前导的子帧集合和 所述第二信道资源中待用于承载所述第二前导的子帧集合在时隙上不相 同。
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