WO2014032281A1 - Procédé pour l'ajout d'une cellule secondaire, station de base et terminal - Google Patents

Procédé pour l'ajout d'une cellule secondaire, station de base et terminal Download PDF

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Publication number
WO2014032281A1
WO2014032281A1 PCT/CN2012/080859 CN2012080859W WO2014032281A1 WO 2014032281 A1 WO2014032281 A1 WO 2014032281A1 CN 2012080859 W CN2012080859 W CN 2012080859W WO 2014032281 A1 WO2014032281 A1 WO 2014032281A1
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WO
WIPO (PCT)
Prior art keywords
terminal
secondary cell
indication information
value
cell
Prior art date
Application number
PCT/CN2012/080859
Other languages
English (en)
Chinese (zh)
Inventor
张宏平
曾清海
黄曲芳
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 CN201280011684.4A priority Critical patent/CN103843425B/zh
Priority to PCT/CN2012/080859 priority patent/WO2014032281A1/fr
Publication of WO2014032281A1 publication Critical patent/WO2014032281A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • the present application relates to communication technologies, and in particular, to a method for adding a secondary cell, a base station, and a terminal. Background technique
  • a terminal can communicate with a base station through multiple cells.
  • one of the plurality of cells is a primary cell (Primary Cell, PCell), and the other cells are secondary cells (SCells).
  • the terminal may send uplink signals to the base station through different cells, but the uplink transmission paths of different cells may be different.
  • the terminal may send an uplink signal to the base station through some cells, and may need to pass through the relay node, and the uplink signal may not need to pass through the relay node after sending the uplink signal to the base station through other cells.
  • the terminal may send an uplink signal to the first base station by using the cell under the first base station (for example, the macro base station), and send the uplink signal to the second base station by using the cell under the second base station (for example, the micro base station).
  • the first base station for example, the macro base station
  • the second base station for example, the micro base station
  • a wireless communication system with CA characteristics can provide higher data rates, support more user services and new service types
  • the base station is accompanied by a large delay problem when adding a secondary cell to the terminal.
  • Implicitly indicating the size of the TA value Explicitly indicating the size of the TA value; or Implicitly indicating that the TA value is zero.
  • the determining, by the terminal, the TA value of the secondary cell to be added includes:
  • the method before determining the TA value of the secondary cell according to the location of the terminal, the method further includes:
  • the first message further includes third indication information, where the third indication information is used to indicate whether to start a TA timer, so that The terminal starts or does not start the TA timer according to the third indication information.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the first message further includes a C-RNTI corresponding to the secondary cell, so that the terminal uses the C-RNTI as The C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • a method for adding a secondary cell including:
  • a first message for adding a secondary cell where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is used to indicate a TA value of the secondary cell ;
  • the data is transmitted by the secondary cell by using the TA value.
  • the aspect as described above and any possible implementation manner further provide an implementation manner, where
  • the first message further includes third indication information, where the third indication information is used to indicate whether to start the TA timer, and after the receiving, by the receiving base station, the first message for adding the secondary cell, the method further includes: The third indication information starts or does not start the TA timer.
  • the first message further includes a C-RNTI corresponding to the secondary cell
  • the receiving base station sends a supplementary cell for adding a secondary cell.
  • the first message also includes:
  • the C-RNTI is used as a C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • a base station including:
  • a determining unit configured to determine, by the terminal, a TA value of the secondary cell to be added, and transmit the TA value to the sending unit;
  • the sending unit is configured to send, to the terminal, a first message, which is used to add the secondary cell, where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is Used to indicate the TA value.
  • the base station further includes a receiving unit
  • the sending unit is further configured to send the second indication information to the terminal, where the second indication information is used to indicate a location of the terminal, and the receiving unit is configured to receive, according to the second indication information, the terminal Transmitting the location of the terminal, and transmitting the location of the terminal to the determining unit; or
  • the sending unit is further configured to request a location of the terminal from a positioning center; Receiving, by the positioning center, the location of the terminal according to the request, and transmitting the location of the terminal to the determining unit.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the first message sent by the sending unit further includes third indication information, where the third indication information is used to indicate whether to start a TA timer, so that the terminal starts or does not start the TA timer according to the third indication information.
  • the first message sent by the sending unit further includes a C-RNTI corresponding to the secondary cell, so that the terminal The C-RNTI is used as the C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • a terminal including
  • a receiving unit configured to receive a first message that is sent by the base station to add a secondary cell, and transmit the first message to the sending unit, where the first message includes a cell identifier of the secondary cell and first indication information
  • the first indication information is used to indicate the TA value
  • the sending unit is configured to send data by using the secondary cell by using the TA value.
  • the terminal further includes a processing unit, where the first message received by the receiving unit further includes third indication information, and the The receiving unit is further configured to transmit the first message to the processing unit, where the third indication information is used to indicate whether to start a TA timer;
  • the processing unit is configured to start or not start the TA timer according to the third indication information.
  • the first message received by the receiving unit further includes a C-RNTI corresponding to the secondary cell; the processing unit is further Used for
  • the C-RNTI is used as a C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • a base station including
  • a processor configured to determine, by the terminal, a TA value of the secondary cell to be added, and transmit the TA value to the transmitter;
  • the transmitter is configured to send, to the terminal, a first message, where the secondary cell is added, where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is Used to indicate the TA value.
  • the base station further includes a receiver
  • the transmitter is further configured to send the second indication information to the terminal, where the second indication information is used to indicate a location for sending the terminal, and the receiver is configured to receive, by the receiver, the second indication information according to the second indication information. Transmitting the location of the terminal, and transmitting the location of the terminal to the processor; or
  • the transmitter is further configured to request a location of the terminal from a positioning center; the receiver is configured to receive a location of the terminal sent by the positioning center according to the request, and transmit the location of the terminal to the location Said processor.
  • the first message sent by the transmitter further includes third indication information, where the third indication information is used to indicate whether to start a TA timer, so that the terminal starts or does not start the TA timer according to the third indication information.
  • the aspect as described above and any possible implementation manner further provide an implementation manner, where
  • the first message sent by the transmitter further includes a C-RNTI corresponding to the secondary cell, so that the terminal uses the C-RNTI as a C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • a terminal including
  • a receiver configured to receive a first message sent by the base station for adding a secondary cell, and transmit the first message to a transmitter, where the first message includes a cell identifier of the secondary cell and first indication information
  • the first indication information is used to indicate the TA value
  • the transmitter is configured to send data by using the secondary cell by using the TA value.
  • the terminal further includes a processor
  • the first message received by the receiver further includes third indication information
  • the The receiver is further configured to transmit the first message to the processor, where the third indication information is used to indicate whether to start a TA timer;
  • the processor is configured to enable or disable the TA timer according to the third indication information.
  • the first message received by the receiver further includes a C-RNTI corresponding to the secondary cell, and the processor further Used for
  • the C-RNTI is used as a C-RNTI of the secondary cell.
  • the foregoing aspect and any possible implementation manner further provide an implementation manner, where the cell is a cell or a pico cell.
  • the TA value can be directly used to transmit data through the secondary cell, Thereby, the terminal is prevented from performing a random access procedure, and thus the increased delay caused by performing the random access procedure can be avoided.
  • FIG. 1 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a method for adding a secondary cell according to another embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a base station according to another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a terminal according to another embodiment of the present application.
  • the technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application.
  • the embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present invention.
  • LTE Long Term Evolution
  • LTE-A advanced Long Term Evolution
  • Other communication systems such as a Long Term Evolution (LTE) system, or an advanced Long Term Evolution (LTE-A) system, or a subsequent evolution.
  • LTE Long Term Evolution
  • LTE-A advanced Long Term Evolution
  • the base station may be in other communication systems such as an LTE system, an LTE-A system, or a subsequent evolution.
  • a network element such as an evolved base station (Evolved NodeB, eNB).
  • the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A and B exist simultaneously. There are three cases of B alone.
  • the character '7' in this paper generally means that the contextual object is an "or" relationship.
  • air interface transmission between a terminal and a base station is time-delayed.
  • the terminal After the terminal synchronizes with the base station, in order to ensure that the uplink signal sent by the terminal arrives at the base station at the time required by the base station, the terminal needs to send data in advance, thereby offsetting the influence of the transmission delay of the air interface transmission.
  • This advanced time value is the Timing Advance (TA) value.
  • the TA values of these cells may also be different.
  • a terminal may perform a random access procedure in different cells to obtain a TA value for each cell.
  • the terminal needs to perform a random access procedure on the secondary cell to obtain the TA value of the secondary cell.
  • performing a random access procedure may bring a certain increase delay. .
  • FIG. 1 is a schematic flowchart of a method for adding a secondary cell according to an embodiment of the present disclosure, as shown in FIG. 1 .
  • execution bodies of 101 and 102 may be base stations.
  • the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the terminal can directly use the TA value to send data through the secondary cell, thereby preventing the terminal from performing random operation. Access process.
  • the first message used to add the secondary cell may further include adding configuration information of the secondary cell, and a detailed description of the cell identifier of the secondary cell and configuration information of the secondary cell may be as follows. There are technical related content, which will not be described here.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the determining, by the base station, the neighboring area indicated by the A4 measurement event is added to the terminal when receiving the A4 measurement event reported by the terminal. Secondary cell.
  • the A4 measurement event indicates that the signal strength of the neighboring cell is higher than a threshold.
  • the base station may configure the threshold and send the threshold to the terminal.
  • the threshold may be a specific value related to a reference signal received power (RSRP) or a reference signal received quality (RSRQ).
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information may be specifically used to implicitly indicate that the TA value is 0.
  • the first indication information does not carry the random access channel (RACH) configuration information or does not carry a specific TA value, the TA value is implicitly indicated as 0.
  • RACH random access channel
  • the base station may specifically determine a TA value of the secondary cell according to the location of the terminal.
  • the base station may calculate, according to the location of the terminal and the location of the secondary cell, a distance between the secondary cell and the terminal, and then divide the distance by a signal propagation rate (ie, 30). Thousand kilometers per second), and multiplying the result by 2 to obtain the TA value of the secondary cell.
  • the location of the secondary cell is the location of the base station to which the secondary cell belongs.
  • the base station may determine, according to the location of the terminal, a preset location of the terminal, and a TA value of the secondary cell, a TA value of the secondary cell corresponding to the location of the terminal. For example, the base station may pre-store the correspondence between the terminal location and the secondary cell TA value, and present it in a list form.
  • the base station may The location of the terminal is further obtained.
  • the base station may send the second indication information to the terminal, where the second indication information is used to indicate the location of the terminal, and the terminal that is sent by the terminal according to the second indication information. position.
  • the terminal may specifically obtain the location of the terminal according to a Global Positioning System (GPS) or an Observed Time Difference Of Arrival (OTDOA).
  • GPS Global Positioning System
  • OTDOA Observed Time Difference Of Arrival
  • the base station may specifically send measurement task configuration information (for example, measurement task configuration information of an A4 measurement event) including the second indication information to the terminal, and receive a measurement report sent by the terminal (for example, an A4 measurement event). Measurement report), the measurement report contains the location of the terminal.
  • measurement task configuration information for example, measurement task configuration information of an A4 measurement event
  • the measurement report contains the location of the terminal.
  • the base station may specifically send a location request message to the terminal, and receive a location response message sent by the terminal according to the location request message, where the location response message includes the location of the terminal.
  • the base station may specifically interact with the positioning center to obtain the location of the terminal.
  • the positioning center is a device that obtains the location of the terminal by using some positioning methods, for example, obtaining a location of the terminal by using a GPS positioning method or an Observed Time Difference Of Arrival (OTDOA) positioning method. .
  • OTDOA Observed Time Difference Of Arrival
  • the first message sent by the base station may further include third indication information, where the third indication information is used to indicate whether to start the TA. And a timer, so that the terminal starts or does not start the TA timer according to the third indication information.
  • the terminal may perform a random access procedure in the secondary cell to obtain a new TA value of the secondary cell determined by the base station for the terminal.
  • the third indication information indicates that the TA timer is started, and when the coverage of the secondary cell is large, the TA value of the secondary cell determined by the base station for the terminal can be updated in time as the terminal moves. For another example, if the third indication information indicates that the TA timer is not started, then the TA timer may never be timed out, that is, the previously acquired TA value is always trusted.
  • the third indication information indicates that the TA timer is not started, and when the coverage of the secondary cell is small, the TA value of the secondary cell determined by the base station for the terminal does not need to be updated continuously with the movement of the terminal, because Moving, does not cause the TA value to change, thereby saving the air interface overhead of reacquiring the TA value, for example, saving the air interface overhead of reacquiring the TA value by the TA command (TA Command).
  • the third indication information and the first indication information may be the same indication information, or may be different indication information, which is not limited in this embodiment.
  • the base station to which the primary cell belongs is different from the base station to which the secondary cell belongs, and the cell-wireless network temporary identifier corresponding to the secondary cell (Cell) Radio Network Temporary Identifier (C-RNTI) is different from the C-RNTI corresponding to the primary cell. Therefore, in the first message sent by the base station, the C-RNTI corresponding to the secondary cell may be further included in the first message, so that the terminal uses the C-RNTI as a C-RNTI of the secondary cell. Thereby improving the accuracy of the secondary cell configuration.
  • Cell Cell
  • C-RNTI Radio Network Temporary Identifier
  • the secondary cell may be a cell with a small coverage, such as a pico cell or a pico, with respect to a macro cell with a large coverage.
  • Cell faremto cell
  • the base station to which the pico cell belongs may be a home base station.
  • the first message for adding the secondary cell is sent to the terminal, where the first message includes the cell of the secondary cell.
  • the first indication information where the first indication information is used to indicate the TA value, and the terminal obtains the TA value of the secondary cell by using the first message sent by the base station.
  • the TA value is used to send data through the secondary cell, thereby preventing the terminal from performing a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • FIG. 2 is a schematic flowchart of a method for adding a secondary cell according to another embodiment of the present application, as shown in FIG. 2 .
  • execution bodies of 101 and 102 may be terminals.
  • the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the terminal can directly use the TA value to send data through the secondary cell, thereby preventing the terminal from performing random operation. Access process.
  • the first message used to add the secondary cell may further include related configuration information of the secondary cell, and a detailed description of the cell identifier of the secondary cell and configuration information of the secondary cell may be as follows. There are technical related content, which will not be described here.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the base station may specifically determine, when the A4 measurement event reported by the terminal is received, the neighboring cell indicated by the A4 measurement event to be added to the secondary cell of the terminal. Wherein, the A4 measurement event indicates that the neighboring cell signal strength is higher than a threshold.
  • the base station may configure the threshold and send the threshold to the terminal.
  • the threshold may be a specific value related to a reference signal received power (RSRP) or a reference signal received quality (RSRQ).
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information may be specifically used to implicitly indicate that the TA value is 0.
  • the TA value is implicitly indicated as 0.
  • the first message received by the terminal may further include third indication information, where the third indication information is used to indicate whether to start the TA a timer; correspondingly, after 201, the terminal may further further The third indication information starts or does not start the TA timer.
  • the terminal may perform a random access procedure in the secondary cell to obtain a new TA value of the secondary cell determined by the base station for the terminal.
  • the third indication information indicates that the TA timer is started, and when the coverage of the secondary cell is large, the TA value of the secondary cell determined by the base station for the terminal can be updated in time as the terminal moves.
  • the TA timer may never be timed out, that is, the previously acquired TA value is always trusted.
  • the third indication information indicates that the TA timer is not started, and when the coverage of the secondary cell is small, the TA value of the secondary cell determined by the base station for the terminal does not need to be updated continuously with the movement of the terminal, because Moving, does not cause the TA value to change, thereby saving the air interface overhead of reacquiring the TA value, for example, saving the air interface overhead of reacquiring the TA value by the TA command (TA Command).
  • the third indication information and the first indication information may be the same indication information, or may be different indication information, which is not limited in this embodiment.
  • the base station to which the primary cell belongs is different from the base station to which the secondary cell belongs, and the cell-wireless network temporary identifier corresponding to the secondary cell (Cell) Radio Network Temporary Identifier (C-RNTI) is different from the C-RNTI corresponding to the primary cell. Therefore, in 201, the first message received by the terminal may further include a C-RNTI corresponding to the secondary cell; correspondingly, after 201, the terminal may further use the C-RNTI as the auxiliary The C-RNTI of the cell improves the accuracy of the secondary cell configuration.
  • Cell Cell Radio Network Temporary Identifier
  • the secondary cell may be a cell with a small coverage, such as a pico cell or a pico, with respect to a macro cell with a large coverage.
  • Cell macro cell with a large coverage.
  • the base station to which the pico cell belongs may be a home base station.
  • the receiving, by the base station, the first message for adding the secondary cell where the first message includes the cell identifier of the secondary cell and the first indication information, where the first indication information is used to indicate the location
  • the TA value of the secondary cell is such that the TA value can be used to transmit data by using the secondary cell, and the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the terminal can directly use the terminal.
  • the TA value is used to send data through the secondary cell, thereby preventing the terminal from performing a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • FIG. 3 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • the base station in this embodiment may include a determining unit 31 and a sending unit 32.
  • the determining unit 31 is configured to determine, for the terminal, a TA value of the secondary cell to be added, and transmit the TA value to the sending unit 32, where the sending unit 32 is configured to send the a first message of the secondary cell, where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is used to indicate the TA value.
  • the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the terminal can directly use the TA value to send data through the secondary cell, thereby preventing the terminal from performing random operation. Access process.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information is specific It can be used to implicitly indicate that the TA value is zero.
  • the determining unit 31 may specifically determine a TA value of the secondary cell according to the coverage of the secondary cell.
  • the determining unit 31 may specifically determine a TA value of the secondary cell according to the location of the terminal.
  • the base station provided in this embodiment may further include a receiving unit 41.
  • the sending unit 32 may further send the second indication information to the terminal, where the second indication information is used to indicate the location of the terminal, and the receiving unit 41 is configured to receive the The terminal transmits the location of the terminal according to the second indication information, and transmits the location of the terminal to the determining unit 31.
  • the sending unit 32 may further request the location of the terminal from the positioning center; correspondingly, the receiving unit 41 is configured to receive the location of the terminal that is sent by the positioning center according to the request, and The location of the terminal is transmitted to the determining unit 31.
  • the first message sent by the sending unit 32 may further include third indication information, where the third indication information is used to indicate whether to start the TA. And a timer, so that the terminal starts or does not start the TA timer according to the third indication information.
  • the third indication information and the first indication information may be the same indication information, or may be different indication information, which is not limited in this embodiment.
  • the first message sent by the sending unit 32 may further include a C-RNTI corresponding to the secondary cell, so that the terminal uses the C-RNTI as a C-RNTI of the secondary cell.
  • C-RNTI cell-specific radio network temporary identifier
  • the base station is used to perform the method corresponding to the embodiment shown in FIG. 1. The details that have been described in the embodiment shown in FIG. 1 are not described herein again.
  • the determining, by the determining unit, the determining, by the determining unit, the TA value of the secondary cell to be added so that the sending unit can send the first message for adding the secondary cell to the terminal, where the first message includes a cell identifier and first indication information of the secondary cell, where the first indication information is used
  • the terminal may directly use the TA value to send data through the secondary cell, thereby avoiding The terminal performs a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • the secondary cell is a cell with a small coverage, such as a micro cell or a pico cell
  • the access time of the terminal is shortened, and the communication usage rate of the terminal in the micro d, the area, or the pico d, the area, and the like can be effectively improved with respect to the coverage of the micro area or the pico area.
  • FIG. 5 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a receiving unit 51 and a sending unit 52.
  • the receiving unit 51 is configured to receive a first message that is sent by the base station to add the secondary cell, and send the first message to the sending unit 52, where the first message includes the cell identifier of the secondary cell and
  • the first indication information, the first indication information is used to indicate the TA value
  • the sending unit 52 is configured to send data by using the secondary cell by using the TA value.
  • the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the sending unit 52 can directly use the TA value to send data through the secondary cell, thereby avoiding the terminal. Perform a random access process.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information may be specifically used to implicitly indicate that the TA value is 0.
  • the terminal provided by this embodiment may further include a processing unit 61; the first message received by the receiving unit 51.
  • the third indication information may further be included, and the receiving unit 51 may further transmit the first message to the processing unit 61, where the third indication information is used to indicate whether to start the TA timer;
  • the processing unit 61 is configured to start or not start the TA timer according to the third indication information.
  • the third indication information and the first indication information may be the same finger The information is displayed, or may be different indication information, which is not limited in this embodiment.
  • the first message received by the receiving unit 51 may further include a C-RNTI corresponding to the secondary cell, and the processing unit 61 may further use the C-RNTI as the secondary cell.
  • C-RNTI cell-specific radio network temporary identifier
  • the terminal is used to perform the method corresponding to the embodiment shown in FIG. 2, and details have been described for the embodiment shown in FIG. 2, and details are not described herein again.
  • the terminal receives, by using the receiving unit, a first message, which is sent by the base station, for adding the secondary cell, where the first message includes the cell identifier of the secondary cell and the first indication information, where the first indication information is used by the terminal.
  • a first message which is sent by the base station
  • the first message includes the cell identifier of the secondary cell and the first indication information, where the first indication information is used by the terminal.
  • Instructing the TA value of the secondary cell so that the sending unit can use the TA value to send data through the secondary cell, and the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, therefore,
  • the terminal can directly use the TA value to transmit data through the secondary cell, thereby preventing the terminal from performing a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • the secondary cell is a cell with a small coverage, such as a micro cell or a pico cell
  • the access time of the terminal is shortened, and the communication usage rate of the terminal in the micro cell or the pico cell or the like can be effectively improved with respect to the coverage of the micro cell or the pico cell or the like.
  • FIG. 7 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • the base station in this embodiment may include a processor 71 and a transmitter 72.
  • the processor 71 is configured to determine, by the terminal, a TA value of the secondary cell to be added, and transmit the TA value to the transmitter 72, where the transmitter 72 is configured to send the terminal to add the a first message of the secondary cell, where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is used to indicate the TA value.
  • the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, so the terminal can directly use the TA value to send data through the secondary cell, thereby preventing the terminal from performing random operation. Access process.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information may be specifically used to implicitly indicate that the TA value is 0.
  • the processor 71 may specifically determine a TA value of the secondary cell according to a coverage of the secondary cell.
  • the processor 71 may determine, according to the location of the terminal, a TA value of the secondary cell.
  • the base station provided in this embodiment may further include a receiver 81.
  • the transmitter 72 may further send second indication information to the terminal, where the second indication information is used to indicate a location where the terminal is sent; accordingly, the receiver 81 is configured to receive the And transmitting, by the terminal, the location of the terminal according to the second indication information, and transmitting the location of the terminal to the processor 71.
  • the transmitter 72 may further request the location of the terminal from the positioning center; correspondingly, the receiver 81 is configured to receive the location of the terminal sent by the positioning center according to the request, and The location of the terminal is transmitted to the processor 71.
  • the first message sent by the transmitter 72 may further include third indication information, where the third indication information is used to indicate whether to start the TA. And a timer, so that the terminal starts or does not start the TA timer according to the third indication information.
  • the third indication information and the first indication information may be the same indication information, or may be different indication information, which is not limited in this embodiment.
  • the first message sent by the transmitter 72 may further include a C-RNTI corresponding to the secondary cell, so that the terminal uses the C-RNTI as a C-RNTI of the secondary cell.
  • C-RNTI cell-specific radio network temporary identifier
  • the base station is used to perform the method corresponding to the embodiment shown in FIG. 1. For the details already described in the embodiment shown in FIG. 1, details are not described herein again.
  • the base station determines, by the processor, the TA value of the secondary cell to be added, so that the transmitter can send the first message for adding the secondary cell to the terminal, where the first message includes a cell identifier and a first indication information of the secondary cell, where the first indication information is used to indicate the TA value, and the terminal obtains a TA value of the secondary cell by using a first message sent by the base station, and therefore, the terminal
  • the TA value can be directly used to transmit data through the secondary cell, thereby preventing the terminal from performing a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • the secondary cell is a cell with a small coverage, such as a micro cell or a pico cell
  • the access time of the terminal is shortened, and the communication usage rate of the terminal in the micro cell or the pico d, the area, and the like can be effectively improved with respect to the coverage of the micro cell or the pico cell.
  • FIG. 9 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a receiver 91 and a transmitter 92.
  • the receiver 91 is configured to receive a first message sent by the base station to add the secondary cell, and transmit the first message to the transmitter 92, where the first message includes the cell identifier of the secondary cell and
  • the first indication information, the first indication information is used to indicate the TA value
  • the transmitter 92 is configured to send data by using the secondary cell by using the TA value.
  • the transmitter 92 can directly use the TA value to transmit data through the secondary cell, thereby avoiding the terminal. Perform a random access process.
  • the first message may be a Radio Resource Control (RRC) connection reconfiguration message.
  • RRC Radio Resource Control
  • the first indication information may be specifically used to explicitly indicate the size of the TA value.
  • the first indication information may be specifically used to implicitly indicate that the TA value is 0.
  • the terminal provided by this embodiment may further include a processor 1001; the first message received by the receiver 91.
  • the third indication information may further be included in the receiver 91, and the receiver 91 may further transmit the first message to the processor 1001, where the third indication information is used to indicate whether to start the TA timer;
  • the processor 1001 is configured to start according to the third indication information.
  • the TA timer is not activated or activated.
  • the third indication information and the first indication information may be the same indication information, or may be different indication information, which is not limited in this embodiment.
  • the first message received by the receiver 91 may further include a C-RNTI corresponding to the secondary cell; the processor 1001 may further use the C-RNTI as the secondary cell.
  • C-RNTI cell-specific radio network temporary identifier
  • the terminal is used to perform the method corresponding to the embodiment shown in FIG. 2, and details have been described for the embodiment shown in FIG. 2, and details are not described herein again.
  • the terminal receives, by using a receiver, a first message, which is sent by the base station, for adding a secondary cell, where the first message includes a cell identifier of the secondary cell and first indication information, where the first indication information is used by the terminal.
  • a receiver Instructing the TA value of the secondary cell, so that the transmitter can use the TA value to send data through the secondary cell, and the terminal obtains the TA value of the secondary cell by using the first message sent by the base station, therefore, The terminal can directly use the TA value to transmit data through the secondary cell, thereby preventing the terminal from performing a random access procedure, thereby avoiding an increased delay caused by performing a random access procedure.
  • the secondary cell is a cell with a small coverage such as a micro cell or a pico cell
  • the access time of the terminal is shortened, relative to the micro cell or the pico cell.
  • the communication usage rate of the terminal in a micro cell or a pico cell or the like can be effectively improved.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like, and the program code can be stored. Medium.

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

Abstract

La présente invention se rapporte à un procédé adapté pour ajouter une cellule secondaire. L'invention se rapporte d'autre part à une station de base et à un terminal. En déterminant la valeur d'avance temporelle (valeur TA) d'une cellule secondaire qui doit être ajoutée à un terminal, un premier message utilisé pour ajouter la cellule secondaire peut être envoyé au terminal. Le premier message contient un identifiant de cellule de la cellule secondaire ainsi qu'un premier élément de données d'indication. Le premier élément de données d'indication est utilisé pour indiquer la valeur TA. Comme le terminal obtient la valeur TA de la cellule secondaire sur la base du premier message envoyé par une station de base, le terminal peut utiliser directement la TA valeur pour transmettre des données via la cellule secondaire.
PCT/CN2012/080859 2012-08-31 2012-08-31 Procédé pour l'ajout d'une cellule secondaire, station de base et terminal WO2014032281A1 (fr)

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CN201280011684.4A CN103843425B (zh) 2012-08-31 2012-08-31 增加辅小区的方法及基站、终端
PCT/CN2012/080859 WO2014032281A1 (fr) 2012-08-31 2012-08-31 Procédé pour l'ajout d'une cellule secondaire, station de base et terminal

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WO2016119179A1 (fr) * 2015-01-29 2016-08-04 华为技术有限公司 Procédé et dispositif de configuration d'événement de mesure
CN105188109B (zh) * 2015-09-30 2018-11-13 武汉虹信通信技术有限责任公司 一种在大于5载波聚合场景中PUCCH SCell的选择方法
CN107872853B (zh) * 2016-09-28 2020-07-24 华为技术有限公司 一种数据传输的方法及设备
CN111149394B (zh) * 2017-12-06 2022-01-25 上海朗帛通信技术有限公司 一种用于无线通信的通信节点中的方法和装置

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CN102238754A (zh) * 2011-07-12 2011-11-09 电信科学技术研究院 一种辅小区上非竞争随机接入的方法和设备

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CN102118801A (zh) * 2011-03-31 2011-07-06 电信科学技术研究院 多载波聚合系统中的上行传输方法和设备
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