WO2014048398A1 - Procédé et dispositif de transmission d'informations reposant sur l'agrégation de porteuses - Google Patents

Procédé et dispositif de transmission d'informations reposant sur l'agrégation de porteuses Download PDF

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Publication number
WO2014048398A1
WO2014048398A1 PCT/CN2013/084649 CN2013084649W WO2014048398A1 WO 2014048398 A1 WO2014048398 A1 WO 2014048398A1 CN 2013084649 W CN2013084649 W CN 2013084649W WO 2014048398 A1 WO2014048398 A1 WO 2014048398A1
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Prior art keywords
pcell
scell
rnti
pdsch
rar message
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PCT/CN2013/084649
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English (en)
Chinese (zh)
Inventor
刘扬
喻斌
杜忠达
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中兴通讯股份有限公司
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Publication of WO2014048398A1 publication Critical patent/WO2014048398A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present invention relates to information transmission technologies in a carrier aggregation system, and in particular, to a carrier aggregation based information transmission method and apparatus. Background technique
  • LTE-Advanced, Long Term Evolution Advance is a 3GPP (the 3rd Generation Partner Project) organization to meet the International Telecommunication Union (ITU), Advanced International Mobile Telecommunications (IMT) -Advanced, International Mobile Telecommunication-Advanced).
  • the LTE-Advanced system is an evolved version based on Long Term Evolution (LTE). It introduces many new technologies to meet the basic needs of IMT-Advanced. One of the most important technologies is carrier aggregation.
  • the LTE-Advanced system Due to the current shortage of wireless spectrum resources, the spectrum resources owned by mobile operators in the world tend to be scattered, and IMT-Advanced requires higher peak rate indicators (100 Mbps for high mobility and 1 Gbps for low mobility).
  • the current 20MHz bandwidth of the LTE standard cannot meet the requirements of IMT-Advanced, so it needs to be expanded to higher bandwidth, such as 40MHz, 60MHz, or even higher.
  • One of the ways to increase the bandwidth and peak rate is to expand the frequency domain. For example, the bandwidth is expanded by "carrier aggregation" for several 20MHz-based LTE bands, which is the essence of carrier aggregation technology. Therefore, the LTE-Advanced system also belongs to the multi-carrier system.
  • the carrier participating in the aggregation is called a component carrier, and the user equipment (UE, User Equipment) can be the same.
  • the component carrier can use the frequency band already defined by LTE, or can use the frequency band specially added for LTE-Advanced. Based on the current spectrum resource shortage, it is impossible to always have a continuous component carrier in the frequency domain that can be allocated to the operator, so the component carrier may be continuous or discontinuous in the frequency band.
  • a carrier aggregation system for a user equipment, there may be one first carrier and one or more second carriers.
  • the first carrier is generally a primary carrier, and can carry signaling and data.
  • the second carrier is mainly used for carrying data, and can also carry part of signaling.
  • Carriers can be divided into uplink carriers (for user equipment to control station communication) and downlink carriers (for control station to user equipment communication).
  • the wireless service area corresponding to the first carrier is the first service area
  • the wireless service area corresponding to the second carrier is the second service area.
  • the first carrier, the first service area and the second carrier, and the concept and name of the second service area will have corresponding definitions.
  • a user equipment configured with carrier aggregation has only one radio resource management (RRC) connection in the network.
  • RRC radio resource management
  • Wireless resource management connection Establish/re-establish/switch when the NAI mobile information and security input service area is provided
  • the Serving Cell is called the primary cell (PCell), that is, the first serving area, and one or more secondary cells (SCells, Seondary Cell), that is, the second serving area, can be configured according to the user equipment capability configuration.
  • the carrier corresponding to the primary cell is a primary carrier, and includes a downlink primary component carrier (DL PCC, Downlink Primary Component Carrier) for controlling station-to-user equipment data transmission, and an uplink master for user equipment to control station number communication.
  • the component carrier (UL PCC, Uplink Primary Component Carrier) is class 0
  • the carrier corresponding to the secondary cell is a secondary small carrier, and includes a downlink secondary component carrier for controlling station-to-user equipment data transmission.
  • DL SCC Downlink Secondary Component Carrier
  • UL SCC Uplink Secondary Component Carrier
  • the base The station in order to implement and maintain uplink synchronization between the user equipment and the base station, the base The station sends a time advance (TA, Timing Advance) to each user equipment according to the transmission delay between the base station and each user equipment, and the user equipment compensates for the timing of the respective uplink transmission according to the time advancement sent by the base station, thereby making up for the user.
  • TA Timing Advance
  • the transmission delay of the UE to the base station is such that the uplink signals of different user equipments arrive at the base station within the receiving window of the base station.
  • the base station in order to obtain and maintain the uplink synchronization between the UE and the base station, the base station configures an uplink synchronization timer (TAT) for the UE, and if the UE can receive the time sent by the base station to the UE before the TAT expires, If the amount is advanced, the UE is considered to maintain uplink synchronization with the base station. Otherwise, the TAT times out and the UE considers that the uplink synchronization is lost.
  • TAT uplink synchronization timer
  • the UE obtains uplink synchronization with the base station by using a random access procedure, and after receiving the random access response (RAR, Random Access Response) sent by the base station, the UE starts the timer TAT, and according to The timing advance of the base station in the random access response advances or delays the timing of the uplink transmission.
  • RAR Random Access Response
  • the UE obtains the uplink synchronization with the base station during the TAT operation, if the TA command is sent to the UE by the base station, the TAT is restarted, and the time advancement carried in the TA command is used to advance or delay the uplink transmission time.
  • the UE If the UE does not receive the TA command during the TAT operation, that is, the TAT times out, the UE considers that it has lost uplink synchronization with the base station, deletes all uplink and downlink resources dynamically allocated to the UE, and clears all the uplink and downlink resources.
  • the hybrid adaptive retransmission buffer (HARQ buffer) data to be sent is sent to the radio resource control (RRC) sublayer to release the static/semi-static uplink physical resources allocated to the UE, and if there is an uplink thereafter
  • RRC radio resource control
  • the user equipment can work on multiple component carriers at the same time.
  • the component carriers can be continuous or discontinuous in the frequency band. They can be in the same frequency band or from different frequency bands. In the case where the component carriers are discontinuous, or the component carriers are from different frequency bands, since each component carrier has different transmission characteristics, the timing advances on the component carriers may be different from each other; even if each component carrier belongs to the same frequency band and On the frequency band Continuously, if each component carrier originates from a different Radio Remote Unit (RRU), or in order to increase cell coverage, each component carrier is processed via a different repeater, then the time on each component carrier The amount of advance may also differ from each other.
  • RRU Radio Remote Unit
  • the UE works only on one carrier (one carrier for the time division duplex mode, and one pair of uplink and downlink carriers for the frequency division duplex mode, which is referred to as a carrier for convenience of description), and only needs to maintain one uplink.
  • the uplink synchronization of the link, and in carrier aggregation, the UE can work on multiple component carriers at the same time, and the TAs of these component carriers may be different. This scenario is referred to as Multi-TA (MTA, Multiple TA). All cells that use the same TA and have the same downlink time reference form a TA group (TA GROUP).
  • the UE obtains uplink synchronization with the base station through a random access procedure.
  • the random access procedure may be initiated by physical downlink control channel signaling (PDCCH order) or a media access control layer (MAC) of the UE, optionally, PDCCH order or radio resource control (RRC, Radio Resource Control).
  • the signaling may allocate a random access preamble to the UE, and the random access procedure is a non-contention based manner; otherwise, the UE needs to select a random access preamble, and the random access procedure is a contention based manner.
  • Selecting a random access resource by the UE includes selecting a time-frequency domain resource such as a random access preamble and a physical random access channel (PRACH).
  • PRACH physical random access channel
  • Figure 1 is a flow chart based on the competitive random access process. As shown in Figure 1, the contention based random access procedure includes the following steps:
  • Step 101 UE transmits a random access preamble on the uplink (Random Access Preamble) 0 by a random access channel (RACH, Random Access CHannel)
  • RACH Random Access CHannel
  • Step 102 A media access control layer (MAC) of the base station (eNB) generates a random access response (RAR, Random Access Response) message, and sends the message in a downlink shared channel (DL-SCH, Downlink-Shared Channel).
  • RAR random access response
  • DL-SCH Downlink-Shared Channel
  • the RAR message includes at least a random access preamble identifier (RAPID, Random Access Preamble) IDentifier), time adjustment information (TA, Time Alignment), initial uplink grant (UL Grant, Uplink Grant), and temporary cell-radio network temporary identifier (Temporary C-RNTI);
  • the message passes through the physical downlink control channel (PDCCH, Physical The random access-Radio Network Temporary Identifier (RA-RNTI) on the Downlink Control CHannel is indicated; the UE needs to receive the random access response message in a predetermined receiving window.
  • PDCCH Physical downlink control channel
  • RA-RNTI Physical The random access-Radio Network Temporary Identifier
  • Step 103 The UE includes a Cell-Radio Network Temporary Identifier (C-RNTI) and a Media Control Element (MAC Control Element) on an Uplink-Shared Channel (UL-SCH). Or a Common Control Logical Channel Service Data Unit (CCCH SDU) including a Contention Resolution Identity; the message is sent to support Hybrid Automatic Retransmission ReQuest (HARQ).
  • C-RNTI Cell-Radio Network Temporary Identifier
  • MAC Control Element Media Control Element
  • UL-SCH Uplink-Shared Channel
  • CCCH SDU Common Control Logical Channel Service Data Unit
  • HARQ Hybrid Automatic Retransmission ReQuest
  • Step 104 The base station sends a contention resolution message on the DL-SCH.
  • the message is indicated by a C-RNTI or a temporary C-RNTI on the PDCCH, and may include a contention resolution identifier.
  • the message is sent to support HARQ.
  • FIG. 2 is a flow chart based on a non-contention random access process. As shown in FIG. 2, for a non-contention random access process, there is no contention resolution process, which specifically includes the following steps:
  • Step 201 The UE sends a random access preamble through the random access channel in the uplink.
  • Step 202 The media access control layer of the base station generates a random access response message, and sends the message to the UE on the downlink shared channel.
  • the random access procedure can only be performed in the primary cell and cannot be performed in the secondary cell.
  • the UE in order to obtain the TA on the SCell, the UE must send the RA preamble on the Scell, and then the UE receives the corresponding RAR message on the PCell.
  • the conventional technology defines RA-RNTI and C-RNTI/semi-persistent scheduling wireless network temporary identification in the same subframe. (SPS-RNTI, Semi Persistent Scheduling-Radio Network Temporary Identifier) When used, the UE does not need to decode those PDCCHs that use C-RNTI/SPS-RNTI scrambling for Cyclic Redundancy Check (CRC).
  • CRC Cyclic Redundancy Check
  • Indicated data (transmitted on the corresponding PDSCH). This definition is reasonable in the conventional technology.
  • the UE receiving the RA-RNTI scrambled RAR on the PCell often means that the quality of the radio link between the UE and the system is not good, so there is no need for other transmission and reception processes. Therefore, different carriers cannot transmit/receive at the same time.
  • the UE receives the RA-RNTI scrambled RAR on the PCELL. If the corresponding random access procedure is the SCell, the radio link quality of the UE and the system is no longer relevant. At this time, it is possible to simultaneously transmit/receive RA-RNTI scrambling and C-RNTI/SPS-RNTI scrambling information.
  • the main object of the present invention is to provide a carrier aggregation-based information transmission method and apparatus, which can simultaneously transmit and receive RA-RNTI scrambled physical downlink shared channels (PDSCH, Physical Downlink Shared Channel) carrying RAR messages. And information carried in the PDSCH carrying the downlink service information (DL-SCH) scrambled by the C-RNTI/SPS-RNTI.
  • PDSCH physical downlink shared channels
  • DL-SCH downlink service information
  • a carrier aggregation based information transmission method includes:
  • the UE determines whether the physical downlink shared channel PDSCH carrying the downlink data is received and decoded in one or more secondary cells SCell.
  • the determining whether to receive and decode the PDSCH carrying the downlink data in the one or more secondary cells SCell includes:
  • the UE searches for a PDSCH carried by the UE in the set of the activated downlink secondary cell DL SCell and performs decoding; the RAR message corresponds to random access of the PCell.
  • the UE does not perform decoding of the PDSCH on the SCell.
  • the determining whether to receive and decode the PDSCH carrying the downlink data in the one or more secondary cells SCell includes:
  • the UE When the UE receives the RAR message, when determining the uplink PCell synchronization, it searches for the PDSCH carried by the SCell in the activated DL SCell set to the UE and performs decoding; when determining that the uplink PCell is not synchronized, the UE does not perform the SCell. Decoding of PDSCH.
  • the method further includes:
  • the UE detects the RA-RNTI scrambled physical downlink control channel PDCCH on the PCell and decodes the PDSCH corresponding to the PDCCH according to the random access radio network temporary identifier RA-RNTI corresponding to the preamble Preamble time transmitted on the SCell, and obtains the PDSCH corresponding to the PDCCH. Said RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the cell radio network temporary identifier C-RNTI/SPS-RNTI used when receiving the PDSCH on the SCell, and the scheduling grant DL-Grant information of the PDSCH is obtained.
  • the method further includes:
  • the media access hybrid automatic repeat request MAC HARQ entity of the UE After the UE decodes the PDSCH of the SCell, and determines that the uplink synchronization timer TAT of the PCell is still valid, the media access hybrid automatic repeat request MAC HARQ entity of the UE sends the downlink corresponding to the SCell to the physical layer of the UE. Feedback of the data, the physical layer of the UE sends feedback to the network side.
  • the one or more SCells are in the same time advance TA group as the PCell;
  • the one or more SCells are not in the same TA group as the PCell.
  • a carrier aggregation based information transmission method includes: The control station sends a RAR message corresponding to the random access procedure of the UE in the SCell, and sends downlink data in one or more SCells; the RAR message is scrambled using the RA-RNTI, the downlink data Scrambling using C-RNTI/SPS-RNTI.
  • the method further includes:
  • the control station When the control station determines that the RAR message corresponds to the random access procedure of the SCell, the control station simultaneously transmits the RAR message corresponding to the SCell random access and the downlink data in the one or more SCells.
  • the method further includes:
  • the control station listens to the physical uplink control channel PUCCH to receive feedback from the UE whether to receive downlink data.
  • the method further includes:
  • the control station determines whether the RAR message corresponds to the random access of the SCell, and listens to the PUCCH to receive feedback of whether the UE receives downlink data.
  • the method further includes:
  • control station When the control station determines that the TAT of the PCell of the UE is valid, it listens to the PUCCH and receives feedback from the UE whether downlink data is received.
  • control station comprises a base station, a micro base station, a home base station, and a relay station.
  • a carrier aggregation based information transmission method includes:
  • the UE determines whether the PDSCH carrying the downlink data is received and decoded in the PCell at the same time.
  • the determining whether to receive and decode the PDSCH carrying the downlink data in the PCell at the same time includes:
  • the UE searches for a PDSCH carried by the PCell to the UE and performs decoding; when the RAR message corresponds to a random access procedure of the PCell, the UE The decoding of the PDSCH on the PCell is not performed.
  • the determining whether to receive and decode the downlink data in the PCell at the same time PDSCH including:
  • the UE When the UE receives the RAR message, when determining the uplink PCell synchronization, searching for the PDSCH carried by the PCell to the UE and performing decoding; when determining that the uplink PCell is not synchronized, the UE does not perform decoding of the PDSCH on the PCell. .
  • the method further includes:
  • the UE detects the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the preamble Preamble time transmitted on the SCell, and decodes the PDSCH corresponding to the PDCCH, to obtain the RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the C-RNTI/SPS-RNTI used when the PDSCH is received on the PCell, and the DL-Grant information of the PDSCH is obtained.
  • the method further includes:
  • the UE After the UE decodes the PDSCH of the SCell, and determines that the uplink TAT of the PCell is still valid, the data is fed back, and the physical layer of the UE sends the feedback to the network side.
  • a carrier aggregation based information transmission method includes:
  • the control station transmits a RAR message corresponding to the random access procedure of the UE in the SCell, and transmits downlink data in the PCell; the RAR message is scrambled using RA-RNTI, and the downlink data uses C -RNTI/SPS-RNTI scrambling.
  • the method further includes:
  • the control station determines that the RAR message corresponds to the random access procedure of the SCell, and simultaneously sends the RAR message corresponding to the SCell random access and the downlink data in the PCell.
  • the method further includes:
  • the control station listens to the PUCCH and receives feedback from the UE whether downlink data is received.
  • the method further includes:
  • the control station determines that the RAR message corresponds to random access of the SCell, and listens to the The PUCCH receives feedback of whether the UE receives downlink data.
  • the method further includes:
  • control station When the control station determines that the TAT of the PCell of the UE is valid, it listens to the PUCCH and receives feedback from the UE whether downlink data is received.
  • control station comprises a base station, a micro base station, a home base station, and a relay station.
  • An apparatus for transmitting information based on carrier aggregation comprising: a receiving unit and a determining unit, wherein: the receiving unit is configured to receive a RAR message corresponding to the random access procedure at the PCell; and the determining unit is configured to determine whether one or more The PDSCH carrying the downlink data is received and decoded in the SCell.
  • the apparatus further comprises a first search decoding unit
  • the first search and decoding unit is triggered to search for a PDSCH that is carried in the set of the activated DL SCells and is decoded, and the RAR message is determined to be corresponding to the RAR message.
  • the first search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the apparatus further includes a second search decoding unit;
  • the determining unit determines that the uplink PCell is synchronized, and triggers the second search and decoding unit to search for and decode the PDSCH carried by the SCell in the activated DL SCell set to the UE;
  • the second search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the device further includes:
  • the detecting and decoding unit is configured to detect the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time transmitted on the SCell, and decode the PDSCH corresponding to the PDCCH, to obtain the RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the C-RNTI/SPS-RNTI used when receiving the PDSCH on the SCell, and the scheduling grant DL-Grant information of the PDSCH is obtained.
  • An apparatus for transmitting information based on a carrier aggregation comprising: a scrambling unit and a sending unit, wherein: the scrambling unit is configured to scramble the RAR message corresponding to the random access procedure of the UE in the SCell by using RA-RNTI, The downlink data is scrambled by using a C-RNTI/SPS-RNTI; and the sending unit is configured to send the RAR message in a PCell of the UE, and send downlink data in one or more SCells.
  • the device further includes:
  • the determining unit is configured to: when the RAR message is determined to correspond to the random access procedure of the SCell, trigger the sending unit to simultaneously send the RAR message corresponding to the SCell random access and the downlink data in the one or more SCells.
  • An apparatus for transmitting information based on a carrier aggregation comprising: a receiving unit and a determining unit, wherein: the receiving unit is configured to receive a RAR message of the corresponding machine access procedure in the PCell; and the determining unit is configured to receive the data in the PCell at the same time
  • the PDSCH carrying the downlink data is decoded.
  • the apparatus further comprises a first search decoding unit
  • the first search decoding unit is triggered to search for the PDSCH carried by the PCell to the UE and perform decoding, and determine that the RAR message corresponds to the PCell.
  • the first search decoding unit is not triggered to perform decoding of the PDSCH on the PCell.
  • the apparatus further includes a second search decoding unit;
  • the determining unit determines that the uplink PCell is synchronized, triggers the second search and decoding unit to search for the PDSCH carried by the PCell to the UE, and performs decoding; the determining unit determines the uplink PCell.
  • the second search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the device comprises:
  • the RA-RNTI detects the RA-RNTI scrambled PDCCH on the PCell and decodes the PDSCH corresponding to the PDCCH, and acquires the RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the C-RNTI/SPS-RNTI used when the PDSCH is received on the PCell, and the DL-Grant information of the PDSCH is obtained.
  • An apparatus for transmitting information based on a carrier aggregation comprising: a scrambling unit and a sending unit, wherein: the scrambling unit is configured to scramble the RAR message corresponding to the random access procedure of the UE in the SCell by using RA-RNTI, The downlink data is scrambled by using a C-RNTI/SPS-RNTI; and the sending unit is configured to send the RAR message in a PCell of the UE, and send downlink data in the PCell.
  • the device further includes:
  • the determining unit is configured to: when the RAR message is determined to correspond to the random access procedure of the SCell, trigger the sending unit to simultaneously send the RAR message corresponding to the SCell random access and the downlink data in the one or more SCells.
  • the UE determines whether the PDSCH carrying the downlink data is received and decoded in one or more SCells at the same time.
  • the UE searches for the PDSCH carried by the UE in the set of the activated downlink secondary cell (DL SCell) and performs decoding; when the RAR message corresponds to the random access procedure of the PCell, the UE The decoding of the PDSCH on the SCell is not performed.
  • the UE determines that the uplink PCell is synchronized, searches for the PDSCH carried by the SCell in the activated DL SCell set to the UE, and performs decoding; when determining that the uplink PCell is not synchronized, the UE does not perform decoding of the PDSCH on the SCell.
  • the UE determines whether the PDSCH carrying the downlink data is received and decoded in the PCell at the same time.
  • the UE searches for the PDSCH carried by the PCell to the UE and performs decoding.
  • the UE does not perform decoding of the PDSCH on the PCell.
  • the UE receives the RAR message, it determines the uplink PCell.
  • the PDSCH carried by the PCell to the UE is searched and decoded.
  • the UE When it is determined that the uplink PCell is not synchronized, the UE does not perform decoding of the PDSCH on the PCell.
  • the present invention implements information carried in the PDSCH of the PDSCH carrying the RAR message and the C-RNTI/SPS-RNTI scrambled bearer downlink service information (DL-SCH) which are simultaneously transmitted and received by the RA-RNTI.
  • DL-SCH C-RNTI/SPS-RNTI scrambled bearer downlink service information
  • Figure 1 is a flow chart based on a competitive random access procedure
  • FIG. 3 is a flowchart of a carrier aggregation based information transmission method according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a carrier aggregation based information transmission method according to another embodiment of the present invention
  • FIG. 5 is a first embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a carrier aggregation-based information transmission apparatus according to a second embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a carrier aggregation-based information transmission apparatus according to a third embodiment of the present invention.
  • FIG. 8 is a schematic diagram showing the structure of a carrier aggregation based information transmission apparatus according to a fourth embodiment of the present invention. detailed description
  • FIG. 3 is a flowchart of a carrier aggregation based information transmission method according to an embodiment of the present invention. As shown in FIG. 3, the carrier aggregation based information transmission method of this example includes the following steps:
  • Step 301 One or more SCells send downlink data to the UE.
  • the downlink data is carried in a PDSCH, and the downlink data is scrambled by a C-RNTI and/or an SPS-RNTI.
  • FIG. 4 is a flowchart of a carrier aggregation based information transmission method according to another embodiment of the present invention. As shown in FIG. 4, the carrier aggregation based information transmission method of this example includes the following steps:
  • Step 401 The PCell sends downlink data to the UE, where the downlink data is carried in
  • the downlink data is scrambled by C-RNTI and/or SPS-RNTI.
  • Step 402 The PCell sends a random access response RAR message to the UE, where the RAR message corresponds to the SCell RACH, and the RA-RNTI scrambling is applied.
  • the simultaneous meaning means in the same subframe.
  • the UE receives the RAR message corresponding to the random access procedure at the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in one or more SCells at the same time.
  • DL-SCH downlink data
  • the UE searches for the PDSCH of the SCell in the set and performs decoding on the UE according to the set of activated DL SCells; if not, the UE does not perform the PDSCH on the SCell. Decoding.
  • the uplink PCell of the UE When receiving the RAR message, it is determined whether the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether the SCell in the set is carried to the UEPDSCH according to the set of activated DL SCells. Decoding; if not, the UE does not perform decoding of the PDSCH on the SCell.
  • the SPS-RNTI detects the C-RNTI/SPS-RNTI scrambled PDCCH to obtain PDSCH scheduling grant information (DL-Grant).
  • the one or more SCells may be in the same TA group as the PCell or may not be in the same TA group.
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the SCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the SCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the base station.
  • TAT PCell uplink synchronization timer
  • the base station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in one or more SCells at the same time.
  • the Rell message of the PCell is scrambled by the RA-RNTI, and the downlink data of the SCell is scrambled by the C-RNTI/SPS-RNTI.
  • the base station detects the feedback corresponding to the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the method includes: before the base station simultaneously sends the RAR message and the downlink data in the PCell and the one or more SCells, determining whether the RAR corresponds to the random access procedure of the SCell If yes, the RAR message corresponding to the SCell random access procedure and the downlink data in one or more SCells are simultaneously transmitted.
  • the base station After the base station sends the RAR message and the downlink data in the PCell and the one or more SCells at the same time, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if yes, the feedback is detected in the corresponding uplink subframe (ACK/NACK).
  • the corresponding PUCCH receives the feedback.
  • the base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK/ NACK)
  • ACK/ NACK uplink subframe
  • Example three The UE receives the RAR message corresponding to the random access procedure in the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time.
  • DL-SCH downlink data
  • Determining whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time including:
  • Determining whether the RAR message corresponds to a random access procedure of the SCell if yes, searching for a PDSCH for the UE on the PCell and decoding; if not, the UE does not perform decoding of the PDSCH on the PCell.
  • the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether there is a bearer for the UEPDSCH and performs decoding on the PCell; if not, the UE does not perform the PCell. Decoding of the PDSCH.
  • the UE detects the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time on the SCell, and decodes the PDSCH corresponding to the PDCCH to acquire the RAR message; and uses the CSCH when receiving the PDSCH carrying the downlink data on the PCell.
  • - RNTI/SPS-RNTI Detects the C-RNTI/SPS-RNTI scrambled PDCCH Obtains PDSCH scheduling grant information (DL-Grant).
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the PCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the PCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the base station.
  • TAT PCell uplink synchronization timer
  • the base station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in the PCell at the same time.
  • the RAR message of the PCell is scrambled using the RA-RNTI, and the downlink data of the PCell is scrambled using the C-RNTI/SPS-RNTI.
  • the base station detects the feedback corresponding to the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the base station After the base station sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if yes, the PUCCH receiving station corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe. Feedback.
  • the base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK/ NACK)
  • ACK/ NACK uplink subframe
  • the UE receives the RAR message corresponding to the random access procedure at the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in one or more SCells at the same time.
  • DL-SCH downlink data
  • the UE searches for the PDSCH of the SCell in the set and performs decoding on the UE according to the set of activated DL SCells; if not, the UE does not perform the PDSCH on the SCell. Decoding.
  • the uplink PCell of the UE When receiving the RAR message, it is determined whether the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether the SCell in the set is carried to the UEPDSCH according to the set of activated DL SCells. Decoding; if not, the UE does not perform decoding of the PDSCH on the SCell.
  • DL-Grant scheduling authorization for PDSCH Information
  • the one or more SCells may be in the same TA group as the PCell or may not be in the same TA group.
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the SCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the SCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the Pico base station.
  • TAT PCell uplink synchronization timer
  • the Pico base station sends a RAR message corresponding to the SCell random access of the UE in the PCell of the UE, and determines whether downlink data can be sent in one or more SCells at the same time.
  • the Rell message of PCell is scrambled by RA-RNTI, and the downlink data of SCell is scrambled by C-RNTI/SPS-RNTI.
  • the Pico base station detects the feedback corresponding to the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the PeNB Before the PeNB sends the RAR message and the downlink data in the PCell and the one or more SCells, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the RAR message corresponding to the SCell random access procedure is simultaneously sent and Downstream data in one or more SCells.
  • the PeNB After the PeNB sends the RAR message and the downlink data in the PCell and the one or more SCells at the same time, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if yes, the feedback is detected in the corresponding uplink subframe (ACK/ NACK) The corresponding PUCCH receives the feedback.
  • the Pico base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK) /NACK)
  • the corresponding PUCCH receives the feedback.
  • the UE receives the RAR message corresponding to the random access procedure on the PCell, and determines whether it can be simultaneously
  • the PDSCH carrying the downlink data (DL-SCH) is received and decoded in the PCell.
  • Determining whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time including:
  • Determining whether the RAR message corresponds to a random access procedure of the SCell if yes, searching for a PDSCH for the UE on the PCell and decoding; if not, the UE does not perform decoding of the PDSCH on the PCell.
  • the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether there is a bearer for the UEPDSCH and performs decoding on the PCell; if not, the UE does not perform the PCell. Decoding of the PDSCH.
  • the UE detects the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time on the SCell, and decodes the PDSCH corresponding to the PDCCH to acquire the RAR message; and uses the CSCH when receiving the PDSCH carrying the downlink data on the PCell.
  • - RNTI/SPS-RNTI Detects the C-RNTI/SPS-RNTI scrambled PDCCH Obtains PDSCH scheduling grant information (DL-Grant).
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the PCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the PCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the Pico base station.
  • TAT PCell uplink synchronization timer
  • the Pico base station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in the PCell at the same time.
  • the RAR message of the PCell is scrambled by the RA-RNTI, and the downlink data of the PCell is scrambled by using the C-RNTI/SPS-RNTI.
  • the Pico base station detects the feedback corresponding to the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the Pico base station Before the Pico base station simultaneously sends the RAR message and the downlink data in the PCell, it is determined Whether the RAR corresponds to the random access procedure of the SCell. If yes, the RAR message corresponding to the SCell random access procedure and the downlink data in the PCell are simultaneously transmitted.
  • the PeNB After the PeNB sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the PUCCH reception corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe.
  • the feedback After the PeNB sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the PUCCH reception corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe. The feedback.
  • the Pico base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK) /NACK)
  • the corresponding PUCCH receives the feedback.
  • the UE receives the RAR message corresponding to the random access procedure at the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in one or more SCells at the same time.
  • DL-SCH downlink data
  • the UE searches for the PDSCH of the SCell in the set and performs decoding on the UE according to the set of activated DL SCells; if not, the UE does not perform the PDSCH on the SCell. Decoding.
  • the uplink PCell of the UE When receiving the RAR message, it is determined whether the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether the SCell in the set is carried to the UEPDSCH according to the set of activated DL SCells. Decoding; if not, the UE does not perform decoding of the PDSCH on the SCell.
  • the PDCCH obtains scheduling grant information (DL-Grant) of the PDSCH.
  • the one or more SCells may be in the same TA group as the PCell, or may not be in the same TA group.
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the SCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the SCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the home base station (Femto or HeNB).
  • TAT PCell uplink synchronization timer
  • the home base station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether downlink data can be sent in one or more SCells at the same time.
  • the Rell message of PCell is scrambled by RA-RNTI
  • the downlink data of SCell is scrambled by C-RNTI/SPS-RNTI.
  • the home base station detects the feedback in the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the method includes: before the home base station sends the RAR message and the downlink data in the PCell and the one or more SCells, whether the RAR corresponds to the random access of the SCell. The process, if yes, simultaneously sends the RAR message corresponding to the SCell random access procedure and the downlink data in one or more SCells.
  • the home base station After the home base station sends the RAR message and the downlink data in the PCell and the one or more SCells at the same time, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if yes, the feedback is detected in the corresponding uplink subframe (ACK/ NACK) The corresponding PUCCH receives the feedback.
  • the home base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, detects the feedback (ACK in the corresponding uplink subframe). /NACK)
  • the corresponding PUCCH receives the feedback.
  • the UE receives the RAR message corresponding to the random access procedure on the PCell, and determines whether it can be simultaneously
  • the PDSCH carrying the downlink data (DL-SCH) is received and decoded in the PCell.
  • Determining whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time including:
  • Determining whether the RAR message corresponds to a random access procedure of the SCell if yes, searching for a PDSCH for the UE on the PCell and decoding; if not, the UE does not perform decoding of the PDSCH on the PCell.
  • the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether there is a bearer for the UEPDSCH and performs decoding on the PCell; if not, the UE does not perform the PCell. Decoding of the PDSCH.
  • the UE detects the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time on the SCell, and decodes the PDSCH corresponding to the PDCCH to acquire the RAR message; and uses the CSCH when receiving the PDSCH carrying the downlink data on the PCell.
  • - RNTI/SPS-RNTI Detects the C-RNTI/SPS-RNTI scrambled PDCCH Obtains PDSCH scheduling grant information (DL-Grant).
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the PCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the PCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the home base station.
  • TAT PCell uplink synchronization timer
  • the home base station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in the PCell at the same time.
  • the RAR message of the PCell is scrambled by the RA-RNTI, and the downlink data of the PCell is scrambled by using the C-RNTI/SPS-RNTI.
  • the home base station detects the feedback in the PUCCH corresponding to the feedback (ACK/NACK) in the corresponding uplink subframe.
  • the home base station Before the home base station simultaneously sends the RAR message and the downlink data in the PCell, it is determined that the Whether the RAR corresponds to the random access procedure of the SCell. If yes, the RAR message corresponding to the SCell random access procedure and the downlink data in the PCell are simultaneously transmitted.
  • the home base station After the home base station simultaneously sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the PUCCH reception corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe.
  • the feedback After the home base station simultaneously sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the PUCCH reception corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe. The feedback.
  • the home base station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (that is, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, detects the feedback (ACK in the corresponding uplink subframe). /NACK)
  • the corresponding PUCCH receives the feedback.
  • the UE receives the RAR message corresponding to the random access procedure at the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in one or more SCells at the same time.
  • DL-SCH downlink data
  • the UE searches for the PDSCH of the SCell in the set and performs decoding on the UE according to the set of activated DL SCells; if not, the UE does not perform the PDSCH on the SCell. Decoding.
  • the uplink PCell of the UE When receiving the RAR message, it is determined whether the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether the SCell in the set is carried to the UEPDSCH according to the set of activated DL SCells. Decoding; if not, the UE does not perform decoding of the PDSCH on the SCell.
  • the PDCCH obtains scheduling grant information (DL-Grant) of the PDSCH.
  • the one or more SCells may be in the same TA group as the PCell, or may not be in the same TA group.
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the SCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the SCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the relay station.
  • TAT PCell uplink synchronization timer
  • the relay station transmits the RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in one or more SCells at the same time.
  • the Rell message of PCell is scrambled by RA-RNTI
  • the downlink data of SCell is scrambled by C-RNTI/SPS-RNTI.
  • the relay station receives the feedback by the PUCCH corresponding to the detection feedback (ACK/NACK) in the corresponding uplink subframe.
  • the method specifically includes: before the relay station sends the RAR message and the downlink data in the PCell and the one or more SCells, it is determined whether the RAR corresponds to the random access procedure of the SCell. If yes, the RAR message corresponding to the SCell random access procedure and the downlink data in one or more SCells are simultaneously transmitted.
  • the relay station After the relay station sends the RAR message and the downlink data in the PCell and the one or more SCells at the same time, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if yes, the feedback is detected in the corresponding uplink subframe (ACK/NACK).
  • the corresponding PUCCH receives the feedback.
  • the relay station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (ie, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK/ NACK)
  • ACK/ NACK uplink subframe
  • the UE receives the RAR message corresponding to the random access procedure in the PCell, and determines whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time. Determining whether the PDSCH carrying the downlink data (DL-SCH) can be received and decoded in the PCell at the same time, including:
  • Determining whether the RAR message corresponds to a random access procedure of the SCell if yes, searching for a PDSCH for the UE on the PCell and decoding; if not, the UE does not perform decoding of the PDSCH on the PCell.
  • the uplink PCell of the UE is synchronized (that is, whether the PCell uplink synchronization timer TAT is valid). If the UE synchronizes, the UE searches whether there is a bearer for the UEPDSCH and performs decoding on the PCell; if not, the UE does not perform the PCell. Decoding of the PDSCH.
  • the UE detects the RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time on the SCell, and decodes the PDSCH corresponding to the PDCCH to acquire the RAR message; and uses the CSCH when receiving the PDSCH carrying the downlink data on the PCell.
  • - RNTI/SPS-RNTI Detects C-RNTI/SPS-RNTI scrambled PDCCH Obtain PDSCH scheduling grant information (DL-Grant).
  • the UE MAC HARQ entity After the UE decodes the PDSCH of the PCell, if the PCell uplink synchronization timer (TAT) is still valid, the UE MAC HARQ entity normally sends feedback (ACK/NACK) corresponding to the downlink data in the PCell to the physical layer, and the physical layer of the UE feeds back the ACK. /NACK to the relay station.
  • TAT PCell uplink synchronization timer
  • the relay station sends a RAR message corresponding to the random access of the UE in the PCell of the UE, and determines whether the downlink data can be sent in the PCell at the same time.
  • the RAR message of the PCell is scrambled using the RA-RNTI, and the downlink data of the PCell is scrambled using the C-RNTI/SPS-RNTI.
  • the relay station receives the feedback by the PUCCH corresponding to the detection feedback (ACK/NACK) in the corresponding uplink subframe.
  • the relay station Before the relay station sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell. If yes, the corresponding SCell random is sent at the same time. The RAR message of the access procedure and the downlink data in the PCell.
  • the relay station After the relay station sends the RAR message and the downlink data in the PCell, it is determined whether the RAR corresponds to the random access procedure of the SCell, and if so, the PUCCH receiving station corresponding to the feedback (ACK/NACK) is detected in the corresponding uplink subframe. Feedback.
  • the relay station detects whether the uplink PCell of the UE is synchronized before receiving the feedback (ACK/NACK) (ie, whether the PCell uplink synchronization timer TAT is valid), and if the synchronization, the feedback is detected in the corresponding uplink subframe (ACK/ NACK)
  • ACK/ NACK uplink subframe
  • FIG. 5 is a schematic structural diagram of a carrier aggregation-based information transmission apparatus according to a first embodiment of the present invention.
  • the carrier aggregation-based information transmission apparatus of this example includes a receiving unit 50 and a determining unit 51, where:
  • the receiving unit 50 is configured to receive a RAR message corresponding to the random access procedure at the PCell.
  • the determining unit 51 is configured to determine whether the PDSCH carrying the downlink data is received and decoded in one or more SCells at the same time.
  • the carrier aggregation based information transmission apparatus of this example further includes a first search decoding unit (not shown in FIG. 5);
  • the first search decoding unit is triggered to search for a PDSCH carried by the UE in the set of activated DL SCells, and performs decoding to determine the RAR message.
  • the first search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the carrier aggregation based information transmission apparatus of this example further includes a second search decoding unit (not shown in FIG. 5);
  • the determining unit 51 determines that the uplink PCell is synchronized, and triggers the second search and decoding unit to search for the PDSCH carried by the SCell in the activated DL SCell set to the UE and decode the PDSCH;
  • the second search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the carrier aggregation-based information transmission apparatus of this example further includes:
  • a detection decoding unit (not shown in FIG. 5) configured to detect an RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time transmitted on the SCell and decode the PDSCH corresponding to the PDCCH, and obtain the RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the C-RNTI/SPS-RNTI used when receiving the PDSCH on the SCell, and the PDSCH scheduling grant DL-Grant information is obtained.
  • the carrier aggregation based information transmission apparatus shown in this example is suitable for use in a UE.
  • the implementation functions of the processing units in the carrier aggregation based information transmission apparatus shown in FIG. 5 can be understood by referring to the related description of the foregoing carrier aggregation based information transmission method. It should be understood by those skilled in the art that the functions of the processing units in the carrier aggregation-based information transmission apparatus shown in FIG. 5 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.
  • FIG. 6 is a schematic diagram showing the structure of a carrier aggregation-based information transmission apparatus according to a second embodiment of the present invention. As shown in FIG. 6, the carrier aggregation-based information transmission apparatus scrambling unit 60 and the transmission unit 61 of the present example, wherein:
  • the scrambling unit 60 is configured to scramble the RAR message corresponding to the random access procedure of the UE in the SCell by RA-RNTI, and scramble the downlink data using C-RNTI/SPS-RNTI;
  • the RAR message is configured to be sent at the PCell of the UE while transmitting downlink data in one or more SCells.
  • the carrier aggregation-based information transmission apparatus of this example further includes:
  • a determining unit (not shown in FIG. 6) configured to: when the RAR message is determined to correspond to a random access procedure of the SCell, trigger the sending unit 60 to simultaneously send the corresponding SCell random access RAR message and downlink data in one or more SCells.
  • the carrier aggregation based information transmission apparatus shown in this example is suitable for use in a base station.
  • FIG. 7 is a schematic structural diagram of a carrier aggregation-based information transmission apparatus according to a third embodiment of the present invention.
  • the carrier aggregation-based information transmission apparatus of this example includes a receiving unit 70 and a determining unit 71, where:
  • the receiving unit 70 is configured to receive the RAR message of the corresponding machine access procedure in the PCell.
  • the determining unit 71 is configured to receive and decode the PDSCH carrying the downlink data in the PCell at the same time.
  • the carrier aggregation based information transmission apparatus of this example further includes a first search decoding unit (not shown in FIG. 7);
  • the first search decoding unit is triggered to search for the PDSCH carried by the PCell to the UE and perform decoding, and the RAR message is determined to correspond to the PCell.
  • the first search decoding unit is not triggered to perform decoding of the PDSCH on the PCell.
  • the carrier aggregation based information transmission apparatus of this example further includes a second search decoding unit (not shown in FIG. 7);
  • the determining unit 71 determines that the uplink PCell is synchronized, triggers the second search and decoding unit to search for the PDSCH carried by the PCell to the UE, and performs decoding; the determining unit determines When the uplink PCell is not synchronized, the second search decoding unit is not triggered to perform decoding of the PDSCH on the SCell.
  • the carrier aggregation-based information transmission apparatus of this example further includes:
  • a detection decoding unit (not shown in FIG. 7) configured to detect an RA-RNTI scrambled PDCCH on the PCell according to the RA-RNTI corresponding to the Preamble time transmitted on the SCell and decode the PDSCH corresponding to the PDCCH, and obtain the RAR message;
  • the C-RNTI/SPS-RNTI scrambled PDCCH is detected according to the C-RNTI/SPS-RNTI used when receiving the PDSCH on the PCell, and the DL-Grant information of the PDSCH is obtained.
  • the carrier aggregation based information transmission apparatus shown in this example is suitable for use in a UE.
  • the implementation functions of the processing units in the carrier aggregation based information transmission apparatus shown in FIG. 7 can be understood by referring to the related description of the foregoing carrier aggregation based information transmission method. It should be understood by those skilled in the art that the functions of the processing units in the carrier aggregation-based information transmission apparatus shown in FIG. 7 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.
  • FIG. 8 is a schematic structural diagram of a carrier aggregation-based information transmission apparatus according to a fourth embodiment of the present invention.
  • the carrier aggregation-based information transmission apparatus of this example includes a scrambling unit 80 and a transmitting unit 81, where:
  • the scrambling unit 80 is configured to scramble the RAR message corresponding to the random access procedure of the UE in the SCell by RA-RNTI, and scramble the downlink data by using C-RNTI/SPS-RNTI;
  • the RAR message is configured to be sent at the PCell of the UE, while the downlink data is sent in the PCell.
  • the carrier aggregation based information transmission apparatus of this example further includes:
  • a determining unit (not shown in FIG. 8) configured to: when the RAR message is determined to correspond to a random access procedure of the SCell, trigger the sending unit 80 to simultaneously send a RAR message corresponding to the SCell random access and one or more SCells Downstream data in the middle.
  • the carrier aggregation based information transmission apparatus shown in this example is suitable for use in a base station.
  • the sending unit and the receiving unit can be implemented by using an antenna system.
  • the determining unit, the scrambling unit, the detecting and decoding unit, the determining unit, and the like can be implemented by a processor, a microprocessor, an FPGA, a DSP, or the like.
  • the above various processing units or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed among multiple computing devices.
  • the network may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps in the fabrication are implemented as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

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Abstract

La présente invention concerne un procédé de transmission d'informations qui est basé sur l'agrégation de porteuses, ledit procédé comprenant: un Équipement Utilisateur (UE) qui, lorsqu'une cellule primaire (PCell) reçoit un message RAR correspondant à une procédure d'accès aléatoire, détermine s'il faut simultanément recevoir et décrypter, dans une SCell ou dans une pluralité de SCells, un PDSCH transportant des données de liaison descendante. En variante, lorsqu'une PCell reçoit un message RAR correspondant à une procédure d'accès machine, l'UE détermine s'il faut simultanément recevoir et décrypter, dans la PCell, un PDSCH transportant des données de liaison descendante. La présente invention concerne également un dispositif de transmission d'informations basé sur l'agrégation de porteuses. La présente invention assure la transmission et la réception simultanées d'informations acheminées dans un PDSCH à brouillage RA-RNTI transportant un message RAR et un PDSCH à brouillage C-RNTI SPS-RNTI transportant un DL-SCH.
PCT/CN2013/084649 2012-09-29 2013-09-29 Procédé et dispositif de transmission d'informations reposant sur l'agrégation de porteuses WO2014048398A1 (fr)

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Application Number Priority Date Filing Date Title
CN201210375331.4A CN103716897B (zh) 2012-09-29 2012-09-29 基于载波聚合的信息传输方法及装置
CN201210375331.4 2012-09-29

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