WO2011050564A1 - Procédé, système et dispositif pour transmettre des informations système - Google Patents

Procédé, système et dispositif pour transmettre des informations système Download PDF

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Publication number
WO2011050564A1
WO2011050564A1 PCT/CN2010/001547 CN2010001547W WO2011050564A1 WO 2011050564 A1 WO2011050564 A1 WO 2011050564A1 CN 2010001547 W CN2010001547 W CN 2010001547W WO 2011050564 A1 WO2011050564 A1 WO 2011050564A1
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WO
WIPO (PCT)
Prior art keywords
transmission information
information
level
user
cell
Prior art date
Application number
PCT/CN2010/001547
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English (en)
Chinese (zh)
Inventor
梁靖
李国庆
Original Assignee
电信科学技术研究院
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Publication of WO2011050564A1 publication Critical patent/WO2011050564A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a method, system and device for transmitting system information. Background technique
  • the peak rate of the LTE-A system is greatly improved compared with the LTE system.
  • the LTE-A system requires downlink IGbps and uplink 500Mbps. Obviously, the bandwidth of 20Mhz can no longer meet this demand.
  • a CA Carrier Aggregation
  • eNB Evolved Base Station
  • the LTE-A system is a multi-carrier system.
  • each carrier wave does not exceed 20Mhz at most.
  • the CA technology of LTE-A is shown in Figure IB.
  • the base station can transmit data on the four carriers at the same time and at the terminal to improve system throughput.
  • the LTE-A system needs to expand the bandwidth that can be used by the user terminal, thereby introducing the CA technology, which is to aggregate multiple consecutive or discontinuous carriers under the same eNB and simultaneously serve the user terminal. These aggregated carriers are also called component carriers (CC).
  • CC component carriers
  • the user equipment UE, User Equipment
  • MIB Master Information Block
  • SIB System Information Block
  • the user terminal Since there are multiple carriers in the LTE-A system, when performing carrier aggregation transmission, the user terminal also needs to know the system information of each carrier aggregation cell. However, there is no technical solution for the user terminal to know the system of each cell. information. Summary of the invention
  • Embodiments of the present invention provide a method, system, and device for acquiring system information, which are used to notify system terminals of system information, thereby implementing carrier aggregation transmission in an LTE-A system.
  • the network side determines the aggregated transmission information of the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located, and the information content is different, and the aggregated transmission information is aggregated from the aggregated transmission information set corresponding to the primary serving cell of the user terminal.
  • the set is a set of information used in carrier aggregation transmission in system information corresponding to the carrier aggregation cell;
  • the network side sends the determined aggregate transmission information to the user terminal.
  • the user terminal receives aggregated transmission information from the network side;
  • the user terminal performs the carrier aggregation transmission according to the aggregated transmission information.
  • An information determining module configured to determine, from the aggregated transmission information set corresponding to each carrier aggregation cell, aggregated transmission information that has the same information type and different information content in the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located,
  • the aggregation transmission information set is a set of information used in the carrier aggregation transmission in the system information corresponding to the carrier aggregation cell;
  • a sending module configured to send the determined aggregate transmission information to the user terminal.
  • a receiving module configured to receive aggregated transmission information from a network side
  • a transmission module configured to perform carrier aggregation transmission according to the aggregate transmission information.
  • the network side is configured from the aggregated transmission information set corresponding to each of the carrier aggregation cells. Determining, by the aggregation transmission information set of the aggregate transmission information set corresponding to the primary serving cell where the user terminal is located, the aggregated transmission information with the same information type and different information content, and transmitting the determined aggregated transmission information to the user terminal, where the aggregated transmission information set is a system corresponding to the carrier aggregation cell A collection of information used in the message aggregation transmission.
  • the network side can send system information to the user terminal, so that the user terminal can know the system information of each carrier aggregation cell, so that carrier aggregation transmission can be implemented in the LTE-A system;
  • the network side only informs the user terminal of the system information related to the carrier aggregation transmission, thereby reducing the signaling overhead and saving the consumption and power of the user terminal.
  • Figure 1A is a schematic diagram of the carrier wave in the LTE system
  • 1B is a schematic diagram of a carrier in an LTE-A system
  • FIG. 2 is a schematic structural diagram of a system for transmitting system information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for transmitting system information according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a carrier activation scenario according to an embodiment of the present invention. detailed description
  • the network side determines, from the aggregated transmission information set corresponding to each of the carrier aggregation cells, that the information type in the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located is the same, and the information content
  • the aggregated transmission information is sent to the user terminal, where the aggregated transmission information set is a set of information used in carrier aggregation transmission in the system information corresponding to the carrier aggregation cell.
  • the network side can send system information to the user terminal, so that the user terminal can know the system information of each carrier aggregation cell, thereby implementing the carrier aggregation transmission and the multi-carrier in the LTE-A system.
  • the primary serving cell is a cell that is accessed by the user terminal and can provide security input and NAS (Non Access Stratum) mobility information for the user terminal.
  • NAS Non Access Stratum
  • the solution of the embodiment of the present invention can be applied to multiple scenarios, such as a carrier activation scenario, a multi-carrier switching scenario, and the like.
  • the primary serving cell where the user terminal is located is the primary serving cell currently accessed by the user terminal;
  • the carrier aggregation cell is a cell that can perform carrier aggregation transmission with the primary serving cell currently accessed by the user terminal.
  • the primary cell where the user terminal is located is the primary serving cell that is accessed before the user terminal switches or the primary serving cell that is accessed after the handover;
  • the carrier aggregation cell is a cell capable of performing carrier aggregation transmission by the primary serving cell that can be accessed after handover with the user terminal.
  • the MIB, SIB1, and SIB2 corresponding to the cell include multiple system information, but not every system information is related to carrier aggregation transmission.
  • the system information related to the carrier aggregation transmission is used as the aggregate transmission information; and the set of the information used in the carrier aggregation transmission in the system information corresponding to the small area is used as the aggregation transmission information set.
  • the aggregated transmission information set is divided into first aggregate transmission information and second aggregate transmission information.
  • the first aggregated transmission information is aggregated transmission information in which the information content of the aggregated transmission information corresponding to any two cells is the same, and the information content before and after the change is the same, and the different aggregated transmission information. That is to say, the small interval must have the same aggregated transmission information and the different aggregated transmission information between the cells as the first aggregated transmission information.
  • the aggregated transmission information that must be the same for the interval includes, but is not limited to, one or more of the following: SFN (SystemFrameNumber), TDD (Time Division Duplex) configuration.
  • the small interval must be different from the aggregated transmission information including but not limited to one or more of the following information Species: Cell downlink operating frequency (dl-freq), ECGI (E-UTRAN Cell Global ID, E-UTRAN: Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network).
  • dl-freq Cell downlink operating frequency
  • ECGI E-UTRAN Cell Global ID
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • Evolved Universal Terrestrial Radio Access Network Evolved Universal Terrestrial Radio Access Network
  • the second aggregated transmission information is aggregated transmission information other than the first aggregated transmission information in the aggregated transmission information set. That is to say, the second aggregated transmission information is aggregated transmission information that may be the same or different between the carriers, that is, when the information content of the aggregated transmission information corresponding to any two cells changes, the same change before the change is different. Or the same after different changes before the change.
  • the carrier waves may be the same, or different aggregate transmission information may include, but is not limited to, one or more of the following information:
  • Radio resource common configuration in SIB2, UE timer and constant (ue-Timers AndConstants, including ⁇ 300, ⁇ 301, ⁇ 310, ⁇ 311, ⁇ 310, N311, etc.), uplink frequency in frequency information (freqlnfo) (ul-CarrierFreq ), upstream bandwidth (ul-Bandwidth) and additional frequency spread ( additionalSpectrumEmission), timing advance timer (TimeAlignmentTimer).
  • the second aggregation transmission information may be different for the user terminals in different states.
  • the T300 is used for the RRC (Radio Resource Control) connection establishment process, and the user terminal in the connected state does not The RRC connection establishment process is initiated, so the T300 may not be included in the second aggregated transmission information corresponding to the user terminal in the connected state.
  • RRC Radio Resource Control
  • the system for transmitting system information in the embodiment of the present invention includes: a network side device 10 and a user terminal 20.
  • the network side device 10 is configured to determine, from the aggregated transmission information set corresponding to each of the carrier aggregation cells, the aggregated transmission information in the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located, and the information content is different, and the information content is different. Sending determined aggregated transmission information, wherein the aggregated transmission
  • the information set is a set of information used in the carrier aggregation transmission in the system information corresponding to the carrier aggregation cell.
  • the user terminal 20 is configured to receive aggregated transmission information from the network side device 10.
  • the user terminal 20 Since the aggregated transmission information has a plurality of aggregated transmission information, the user terminal 20 knows each aggregated transmission information of the primary serving cell, so the network side device 10 only needs to send the aggregated transmission information different from the primary serving cell, and the primary service The same aggregated transmission information of the cell does not need to be sent, which can further save overhead;
  • the user terminal 20 uses the received aggregated transmission information as the aggregated transmission information of the corresponding carrier aggregation cell, and the aggregated transmission information of the primary serving cell as the aggregated transmission information that is not received.
  • Aggregation transmission information of a wave aggregation cell is not received.
  • carrier aggregation cells VIII, B, and C where carrier aggregation cell A is the primary serving cell, and carrier aggregation cell B has the same downlink bandwidth as the primary serving cell, and the carrier aggregation cell C has the same maximum transmission power as the primary serving cell.
  • the network side device 10 does not transmit the downlink bandwidth corresponding to the carrier aggregation cell B, and does not transmit the maximum transmission power corresponding to the carrier aggregation cell C.
  • the user terminal 20 receives the downlink bandwidth corresponding to the carrier aggregation cell B.
  • the carrier terminal 20 knows that the downlink bandwidth of the primary serving cell is the downlink bandwidth of the carrier aggregation cell B, and the maximum transmit power of the primary serving cell is the maximum transmit power of the carrier aggregation cell C. .
  • the aggregation transmission information set includes the first aggregation transmission information and the second aggregation transmission information
  • the network side device 10 needs to determine that the information content before and after the change in the first aggregation transmission information corresponding to each of the carrier aggregation cells is different.
  • the first aggregated transmission information, and the second aggregated transmission information corresponding to the current primary serving cell, and the second aggregated transmission information of the second aggregated transmission information corresponding to the current primary serving cell, and the second aggregated transmission information having different information content And determining the determined first aggregate transmission information and the second aggregate transmission information as the determined aggregate transmission information.
  • the first aggregated transmission information in which the information content before and after the change in the first aggregated transmission information is different is the aggregated transmission information that is definitely different between each cell, the part of the aggregated transmission information must be transmitted; and the second aggregated transmission information has There may be a second aggregation pass corresponding to the current primary serving cell.
  • the second aggregated transmission information of the same type of information and different information content.
  • the user terminal 20 may be notified by means of delta signaling, that is, when the aggregated transmission information is the same, the user terminal 20 is not notified to aggregate the transmission information, and only the indication information is notified; when the aggregated transmission information is different The user terminal 20 is notified to aggregate the transmission information.
  • the network side device 10 sends the determined second aggregate transmission information;
  • the network side device 10 needs to use the first indication information as the determined second aggregate transmission information, where the second aggregation transmission information of the second aggregation transmission information corresponding to the current primary serving cell is the same, and the information content is different.
  • the first indication information is used to indicate that the user equipment uses the second aggregate transmission information corresponding to the primary serving cell as the second aggregate transmission information corresponding to the carrier aggregation cell.
  • the user terminal 20 uses the second aggregate transmission information of the primary serving cell as the second aggregate transmission information of the carrier aggregation cell.
  • the first indication information may be lbit data, such as 0, or a special set of bits, such as 01010101.
  • the second indication information-fourth indication information introduced below is similar to the first indication information. If different indication information is represented by the same number, it can be distinguished by different dedicated signaling, or by the same dedicated signaling. Different areas are distinguished.
  • the network side device 10 may send the first aggregated transmission information and the second aggregated transmission information in one dedicated signaling, or may be sent in two dedicated signaling.
  • the dedicated signaling may be: an RRC connection reconfiguration message, a carrier aggregation activation message, and the like.
  • the dedicated signaling may be: an RRC connection reconfiguration message, a handover command, and the like.
  • the second aggregated transmission information may further include cell-level second aggregated transmission information and user-level second aggregated transmission information, where the second-level aggregated transmission information of the cell-level is valid in one cell, and is applied to the configuration information of the cell itself, including but Not limited to one or more of the following information: Cell downlink bandwidth (dl-Bandwidth) in the MIB, PHICH configuration. UE uplink transmission power limit (P-max) in SIB1, frequency band (freqBandIndicator) in which the cell is located.
  • dl-Bandwidth Cell downlink bandwidth
  • PHICH configuration HARQBandIndicator
  • Radio resource common configuration in SIB2, uplink frequency (ul-CarrierFreq), uplink bandwidth (ul-Bandwidth) and additional frequency spread (additionSpectrumEmission) in frequency information (freqlnfo),
  • the user-level second aggregated transmission information is valid in one cell and is applied to configuration information of all users in the cell, including but not limited to one or more of the following information:
  • UE timers and constants including T300, ⁇ 301, ⁇ 310, ⁇ 311, ⁇ 310, N311, etc.
  • timing advance timer time advance timer
  • the network side device 10 may transmit the cell level second aggregate transmission information, the user level second aggregate transmission information, and the first aggregate transmission information to the user terminal by using at least one dedicated signaling.
  • the network side device 10 can be sent through three dedicated signalings (ie, one dedicated signaling bears the cell-level second aggregated transmission information, one dedicated signaling carries the user-level second aggregated transmission information, and one dedicated signaling bearer first.
  • Aggregation transmission information can also be sent by two dedicated signaling (ie, one dedicated signaling carries the first aggregated transmission information, and another dedicated signaling carries the cell-level second aggregated transmission information and the user-level second aggregated transmission information) ; It can also be sent via a dedicated signaling.
  • the network-side device 10 may use the second indication information as the determined cell-level second aggregation transmission information, where the second indication information is used to indicate that the user terminal aggregates the cell-level second corresponding to the primary serving cell. Transmitting information as cell-level second aggregate transmission information corresponding to the carrier aggregation cell;
  • the user-level second aggregation transmission information corresponding to each of the carrier aggregation cells is different, the user-level second aggregation transmission information corresponding to the primary serving cell has the same information type, and the user-level second aggregation transmission information with different information content
  • the network side device 10 may use the third indication information as the determined user-level second aggregation transmission information, where the third indication information is used to indicate that the user terminal uses the user-level second aggregation transmission information corresponding to the primary serving cell as the carrier aggregation cell. Corresponding user-level second aggregation Transfer information.
  • network side device 10 There are many ways for the network side device 10 to send user-level second aggregated transmission information, and several are listed below:
  • the network side device 10 selects at least one carrier aggregation cell from the carrier aggregation cell, and sends the user-level second aggregation transmission information corresponding to the selected carrier aggregation cell to the user terminal, where the user level is sent to the user terminal.
  • the second aggregate transmission information is the user-level second aggregate transmission information of the user-level second aggregation transmission information corresponding to the primary serving cell where the user terminal is located, and the information content is different;
  • the user terminal 20 determines, according to the received user-level second aggregation transmission information of the at least one carrier aggregation cell, the user-level second aggregation transmission information corresponding to all carrier aggregation cells that perform the carrier aggregation transmission.
  • the network-side device 10 may only send the information. Determining a user-level second aggregate transmission information of a carrier aggregation cell; or transmitting a determined user-level second aggregation transmission information of the plurality of carrier aggregation cells; and transmitting the determined user-level aggregation level of all the carrier aggregation cells
  • the second aggregate transmits information (this case is the same as the transmission of the cell-level second aggregated transmission information).
  • the user-level second aggregation transmission information of the carrier aggregation cell may be determined by the network-side device 10 or the user terminal 10 according to the characteristics of the cell, or may be between the network-side device 10 and the user terminal 20. Negotiate and determine.
  • the root cell's own characteristics are determined, mainly depending on the channel transmission characteristics of the component carrier of the cell. It is assumed that the component carrier channel characteristics of the two carrier aggregation cells are different, and the user cannot use the same radio link failure detection timer ( T310) and the counters (N310, N311) perform radio link channel quality monitoring on the component carriers of the two cells, then the radio link failure detection timer (T310) and the counters (N310, N311) of the two cells are Need to be sent to the user, otherwise, choose one of them to send to the user.
  • the network side device 10 may notify the user terminal 20 which carrier aggregation cell of the carrier aggregation cell is the same as the user-level second aggregation transmission information of the remaining carrier aggregation cell. For example, there are four carrier aggregation cells A, B, C, and D, wherein the user-level aggregation transmission information of the carrier aggregation cell A and the carrier aggregation cell B is the same, and the network-side device 10 only needs to send the carrier aggregation small.
  • the user-level terminal 20 receives the user-level second aggregation transmission information as the user-level second corresponding to the carrier aggregation cell. Aggregate transfer information.
  • the network side device 10 and the user terminal 20 can distinguish the user-level second aggregation transmission information of the carrier aggregation cell according to different areas of the dedicated signaling (for example, the area 1 is the user-level second of the carrier aggregation cell 1).
  • the aggregation transmission information, the area 2 is the user-level second aggregation transmission information of the carrier aggregation cell 2, and the like; and the network side device 10 may further add the carrier aggregation cell before the user-level second aggregation transmission information.
  • the identifier of the cell such as the cell identifier or the network side device 10 and the user terminal 20, is well-defined.
  • the network-side device 10 has the same information type of the user-level second aggregation transmission information corresponding to the primary serving cell where the user terminal is located, and the user-level information content is different.
  • the fourth indication information is sent to the user terminal as the user-level second aggregate transmission information, where the fourth indication information is used to indicate that the user terminal sends the user-level second aggregation of the recently determined carrier aggregation cell.
  • the information is transmitted as the current user-level second aggregated transmission information.
  • the network side device 10 determines that the information type of the user-level second aggregated transmission information corresponding to the primary serving cell where the user terminal is located is the same, and the user-level second aggregated transmission information with different information content is the fourth.
  • the indication information is sent to the user terminal as the user-level second aggregate transmission information.
  • the user terminal 20 after receiving the fourth indication information, the user terminal 20 knows that the user-level second aggregation transmission information of the last determined carrier aggregation cell is used as Current user-level second aggregated transmission letter The information, that is, does not change the user-level second aggregate transmission information of each existing carrier aggregation cell.
  • publicly-configured user-level second aggregated transmission information and/or dedicated configured user-level second aggregated transmission information may also be included.
  • the publicly configured user-level second aggregated transmission information is valid in one cell and is applied to configuration information of all users in the cell, including but not limited to one or more of the following information:
  • UE timers and constants including T300, ⁇ 301, ⁇ 310, ⁇ 311, ⁇ 310, N311, etc.
  • common timing advance timer TimeAlignmentTimer
  • the user-level second aggregate transmission information of the dedicated configuration is configuration information that is valid only for one user, including but not limited to one or more of the following information:
  • Radio link failure timers and constants including T301, ⁇ 310, ⁇ 311, ⁇ 310, ⁇ 311, etc.
  • dedicated timing advance timer timeAlignmentTimer
  • the network-side device 10 When determining that only a certain user terminal 20 needs to update the user-level second aggregated transmission information, the network-side device 10 transmits the user-configured second-level aggregated transmission information to the user terminal 20; and determines each user terminal in the required cell. When the user-level second aggregated transmission information is updated, the public-configured user-level second aggregated transmission information is transmitted to each of the user terminals 20 in the cell.
  • the user terminal 20 After receiving the user-level second aggregated transmission information of the dedicated configuration, the user terminal 20 replaces the received user-level second aggregate transmission information of the dedicated configuration with the user-level second aggregation transmission information of the public configuration of the same type that has been received. .
  • the network side device in the embodiment of the present invention may be a station, or may be another device on the network side, or may be a new device on the network side.
  • the base station is a base station where the primary serving cell currently accessed by the user terminal is located; if the network side device in the embodiment of the present invention is a base station, and the application is When the multi-carrier switching scenario is performed, the base station is a base station where the primary serving cell accessed by the user terminal after handover (ie, the target base station after handover).
  • the network side device of the embodiment of the present invention includes: an information determining module 100 and a sending module 110.
  • the information determining module 100 is configured to aggregate aggregated information information corresponding to each carrier aggregation cell.
  • the aggregated transmission information in the aggregation transmission information set corresponding to the primary serving cell where the user terminal is located is the same, and the information content is different, and the aggregated transmission information set is the carrier aggregation transmission in the system information corresponding to the carrier aggregation cell. A collection of information that is used when.
  • the sending module 110 is configured to send the aggregated transmission information determined by the information determining module 100 to the user terminal.
  • the aggregation transmission information set includes the first aggregation transmission information and the second aggregation transmission information.
  • the first aggregation transmission information is that when the information content of the aggregate transmission information corresponding to any two cells changes, the information content before and after the change is the same.
  • the second aggregated transmission information is aggregated transmission information other than the first aggregated transmission information in the aggregated transmission information set, and the information determining module 100 determines that each of the carrier aggregation cells corresponds to The first aggregated transmission information in which the information content before and after the change in the first aggregated transmission information is different, and the second aggregate transmission transmission corresponding to the current primary serving cell in the second aggregated transmission information corresponding to each current carrier aggregation cell is determined.
  • the second aggregated transmission information of the information type is the same, and the information is different, and the determined first aggregated transmission information and the second aggregated transmission information are used as the determined aggregated transmission information.
  • the information determining module 100 determines that the second aggregated transmission information corresponding to the current primary serving cell does not have the same information type of the second aggregated transmission information corresponding to the current primary serving cell, and the second aggregated transmission with different information content
  • the first indication information is used as the determined second aggregation transmission information
  • the first indication information is used to indicate that the user equipment uses the second aggregation transmission information corresponding to the primary serving cell as the second aggregate transmission information corresponding to the carrier aggregation cell.
  • the second aggregation transmission information includes the cell-level second aggregation transmission information and the user-level second aggregation transmission information.
  • the sending module 110 sends the cell-level second aggregation transmission information to the user terminal by using at least one dedicated signaling, and the user-level second aggregation. Transmitting information and determined first aggregated transmission information.
  • the information determining module 100 determines that the cell-level second aggregated transmission information corresponding to the primary serving cell has the same information type of the cell-level second aggregated transmission information corresponding to the primary serving cell, and the information content is different.
  • the second indication information is used as the determined cell-level second aggregation transmission information, and the second indication information is used to indicate that the user equipment uses the cell-level second aggregation transmission information corresponding to the primary-month I-cell as the carrier wave.
  • the third indication information is used as the determined user-level second aggregated transmission information,
  • the third indication information is used to indicate that the user equipment uses the user-level second aggregation transmission information corresponding to the primary serving cell as the user-level second aggregation transmission information corresponding to the carrier aggregation cell.
  • the sending module 110 selects at least one carrier aggregation cell from the carrier aggregation cell, and sends the user-level second aggregation transmission information corresponding to the selected carrier aggregation cell to the user terminal, where the user-level second aggregation is sent to the user terminal.
  • the transmission information is the user-level second aggregate transmission information of the user-level second aggregation transmission information corresponding to the primary serving cell where the user terminal is located, and the information content is different; or
  • the user-level second aggregate transmission information corresponding to the primary serving cell where the user terminal is located has the same information type of the user-level second aggregated transmission information, and the user-level second aggregated transmission information is different when the information content is different.
  • the fourth indication information is sent to the user terminal as the user-level second aggregate transmission information, where the fourth indication information is used to indicate that the user terminal uses the user-level second aggregation transmission information of the last-time determined carrier aggregation cell as the current user level.
  • the second aggregate transmits information.
  • the user terminal of the embodiment of the present invention includes: a receiving module 200 and a transmitting module 210.
  • the receiving module 200 is configured to receive aggregated transmission information from the network side.
  • the transmission module 210 is configured to perform carrier aggregation transmission according to the aggregated transmission information.
  • the information is applied to the related wave-aggregated cells to perform parameter configuration, and then the configuration is used to perform data transmission and reception, and the carrier-side aggregation transmission with the network side is implemented.
  • the receiving module 200 determines, according to the received user-level second aggregation transmission information of the at least one carrier aggregation cell, that the carrier aggregation transmission is performed. User-level second aggregate transmission information corresponding to all the carrier aggregation cells.
  • the receiving module 200 replaces the received user-level second aggregate transmission information of the dedicated configuration with the user of the public configuration of the same type received.
  • the second aggregation transmits information.
  • the method for transmitting system information in the embodiment of the present invention includes the following steps: Step 501: The network side determines, from the aggregated transmission information set corresponding to each of the carrier aggregation cells, an aggregation corresponding to the primary serving cell where the user terminal is located.
  • the aggregated transmission information in the transmission information set is the same, and the information content is different.
  • the aggregate transmission information set is a set of information used in carrier aggregation transmission in the system information corresponding to the carrier aggregation cell.
  • Step 502 The network side sends the determined aggregate transmission information to the user terminal.
  • the step 502 may further include:
  • Step 503 The user terminal determines, according to the received aggregated transmission information, aggregated transmission information of the carrier aggregation cell.
  • the user terminal Since the aggregated transmission information has a plurality of aggregated transmission information, the user terminal knows each aggregated transmission information of the primary serving cell, so the network side only needs to send the aggregated transmission information different from the primary serving cell, and is the same as the primary serving cell. Aggregate transmission information does not need to be sent, which can further save overhead;
  • the user terminal after receiving the aggregated transmission information, uses the received aggregated transmission information as the aggregated transmission information of the corresponding carrier aggregation cell, and the aggregated transmission information of the primary serving cell for the aggregated transmission information that is not received.
  • the aggregate transmission information of the carrier aggregation cell As the aggregate transmission information of the carrier aggregation cell.
  • carrier aggregation cells VIII, B, and C where carrier aggregation cell A is the primary serving cell, and carrier aggregation cell B has the same downlink bandwidth as the primary serving cell, and the carrier aggregation cell C has the same maximum transmission power as the primary serving cell.
  • the network side device 10 does not send the downlink bandwidth corresponding to the carrier aggregation cell B, and does not transmit the maximum transmission power corresponding to the carrier aggregation cell C.
  • the user terminal 20 receives the downlink bandwidth and the carrier wave corresponding to the carrier aggregation cell B.
  • the maximum transmission power corresponding to the aggregation cell C the user terminal 20 knows that the downlink bandwidth of the primary serving cell is used as the downlink bandwidth of the carrier aggregation cell B, and the maximum transmission power of the primary serving cell is used as the maximum transmission power of the carrier aggregation cell C. .
  • the aggregation transmission information set includes the first aggregation transmission information and the second aggregation transmission information.
  • the network side needs to determine that the information content before and after the change in the first aggregation transmission information corresponding to each of the carrier aggregation cells is not The same aggregate transmission information, as well as determining the current The second aggregated transmission information corresponding to the current carrier cell, the second aggregated transmission information corresponding to the current primary serving cell, and the second aggregated transmission information having different information content, and the first aggregated transmission information to be determined The second aggregated transmission information is used as the determined aggregated transmission information.
  • the first aggregated transmission information that is different from the information in the first aggregation transmission information before and after the change is the aggregated transmission information that is definitely different between each cell, so the part of the aggregated transmission information must be sent;
  • the user terminal may be notified by means of incremental signaling, that is, when the aggregate transmission information is the same, the user terminal is not notified to aggregate the transmission information, and only the indication information is notified; when the aggregate transmission information is different, the user terminal is notified to aggregate. transmit information.
  • step 502 the network side sends the determined second aggregate transmission information. If there is no second aggregated transmission information of the second aggregation transmission information corresponding to the current primary serving cell and the information content is different, then in step 502, the network side needs to use the first indication information as the determined second aggregation. Transmitting information, where the first indication information is used to indicate that the user equipment uses the second aggregated transmission information corresponding to the primary serving cell as the second aggregation transmission information corresponding to the carrier aggregation cell.
  • the user terminal in step 503 uses the second aggregation transmission information of the primary serving cell as the second aggregate transmission information of the carrier aggregation cell.
  • the first indication information may be lbit data, such as 0, or a special set of bits, such as 01010101.
  • the second indication information to the fourth indication information described below is similar to the first indication information. If different indication information is represented by the same number, it can be distinguished by different dedicated signaling, or by the same dedicated signaling. Different areas are distinguished.
  • the network side may send the first aggregated transmission information and the second aggregated transmission information in one dedicated signaling, or may be sent in two dedicated signaling.
  • the second aggregate transmission information may further include cell-level second aggregation transmission information and user-level second aggregation transmission information.
  • the network side may send the cell-level second aggregated transmission information, the user-level second aggregated transmission information, and the first aggregated transmission information to the user terminal by using at least one dedicated signaling.
  • the network side can be sent through three dedicated signalings (that is, one dedicated signaling carries the second aggregated transmission information of the cell level, one dedicated signaling carries the second aggregated transmission information of the user level, and one dedicated signaling carries the first aggregated transmission information. ); can also be sent through two dedicated signaling (ie, one dedicated signaling carries the first aggregated transmission information, and another dedicated signaling carries the cell-level second aggregated transmission information and the user-level second aggregated transmission information); It can be sent through a dedicated signaling.
  • the cell-level second aggregation transmission information corresponding to each of the carrier aggregation cells has the same information type, and the information content is different.
  • the second aggregation transmission information is used by the network side, and the second indication information is used as the second aggregation transmission information of the cell level.
  • the second indication information is used to indicate that the user equipment uses the second aggregation transmission information of the cell level corresponding to the primary serving cell as the carrier wave.
  • the user-level second aggregation transmission information corresponding to each of the carrier aggregation cells has the same information type, and the user-level second aggregation transmission information with different information content
  • the network side may use the third indication information as the determined user-level second aggregation transmission information, where the third indication information is used to indicate that the user terminal uses the user-level second aggregation transmission information corresponding to the primary serving cell as the carrier aggregation cell.
  • the user-level second aggregate transmits information.
  • step 502 there are many ways for the network side to send the user-level second aggregated transmission information, and several types are listed below:
  • the network side selects at least one carrier aggregation cell from the carrier aggregation cell, and sends the user-level second aggregation transmission information corresponding to the selected carrier aggregation cell to the user terminal, where the user-level second aggregation is sent to the user terminal.
  • the transmission information is the same as the information type of the user-level second aggregate transmission information corresponding to the primary serving cell where the user terminal is located, and the user content of the information content is different. Aggregate transmission of information;
  • the user terminal determines the user-level second aggregate transmission information corresponding to all the carrier aggregation cells that perform carrier aggregation transmission according to the received user-level second aggregation transmission information of the at least one carrier aggregation cell.
  • the network side may only send Determining the user-level second aggregate transmission information of one carrier aggregation cell; or transmitting the determined user-level second aggregation transmission information of the multiple carrier aggregation cells; and transmitting the determined user-level second aggregation of all the carrier aggregation cells Transmitting information (this is the same as sending cell-level second aggregated transmission information).
  • the user-level second aggregation transmission information of the one or more carrier aggregation cells sent by the specific network side may be determined by the network side or the user terminal according to the characteristics of the cell itself, or may be determined by the network side and the user terminal.
  • the network side may notify the user terminal of which carrier aggregation cell and the remaining part of the carrier aggregation cell of the part of the carrier aggregation cell sent by the user terminal.
  • the second aggregation transmission information is the same. For example, if there are four carrier aggregation cells A, B, C, and D, where the user-level second aggregation transmission information of the carrier aggregation cell A and the carrier aggregation cell B are the same, the network side only needs to send the carrier aggregation.
  • the user terminal receives the user-level second aggregation transmission information that is received as the user-level second aggregation transmission information of the corresponding carrier aggregation cell.
  • the network side and the user terminal may distinguish the user-level second aggregation transmission information of the carrier aggregation cell according to different areas of the dedicated signaling (for example, the area 1 is the user-level second aggregation of the carrier aggregation cell 1). Transmitting information, area 2 is the user-level second aggregation of the carrier aggregation cell 2
  • the information may be transmitted by the network side.
  • the network side may also add an identifier that identifies the carrier aggregation cell before the user-level second aggregation transmission information, such as the cell identifier or the network side and the user terminal agreed-aid identifier.
  • the network side has the same information type of the user-level second aggregate transmission information corresponding to the primary serving cell where the user terminal is located, and the user level is different.
  • the fourth indication information is sent to the user terminal as the user-level second aggregation transmission information, where the fourth indication information is used to indicate that the user terminal sends the user-level second aggregation transmission information of the carrier aggregation cell that is last determined. As the current user-level second aggregate transmission information.
  • the fourth indication information is As the user-level second aggregate transmission information is sent to the user terminal; correspondingly, in step 503, after receiving the fourth indication information, the user terminal knows that the user-level second aggregate transmission information of the last determined carrier aggregation cell is used as The current user-level second aggregation transmission information, that is, does not change the user-level second aggregation transmission information of each existing carrier aggregation cell.
  • publicly-configured user-level second aggregated transmission information and/or dedicated configured user-level second aggregated transmission information may also be included.
  • the network side When determining that only the user terminal needs to update the user-level second aggregated transmission information, the network side sends the user-configured second-level aggregated transmission information to the user terminal; and determines that each user terminal in the required cell updates the user-level second aggregation. When the information is transmitted, the publicly configured user-level second aggregated transmission information is transmitted to each user terminal in the cell.
  • the user terminal After receiving the user-level second aggregation transmission information of the dedicated configuration, the user terminal replaces the received user-level second aggregation transmission information of the dedicated configuration with the user-level second aggregation transmission information of the public configuration of the same type that has been received.
  • the method for transmitting the system information in the embodiment of the present invention may also be used as a step of performing the carrier aggregation transmission.
  • the step 501 may be a preparation step of the carrier aggregation transmission
  • the step 503 may be followed by the step of performing carrier aggregation transmission.
  • the timing relationship between these steps can be based on Need to change.
  • the UE initially works in the cell 1. Because the traffic increases, the UE needs to perform CA transmission (ie, carrier aggregation transmission), and the base station 1 decides to aggregate the UE. Cell 1 and cell 2 perform CA transmission, and then the base station transmits the CA necessary system information of the cell 2 to the UE through dedicated signaling.
  • CA transmission ie, carrier aggregation transmission
  • the downlink working frequency of the cell 2 is £2, which is different from the af of the cell 1.
  • the base station must send it to the UE, and the UE performs CA transmission on the cell 2 on G according to the information.
  • the base station does not send the downlink bandwidth to the UE.
  • the UE considers that the downlink bandwidth of the two cells is the same, and performs CA transmission according to this; if the downlink bandwidth of the cell 2 is different from the cell 1, The base station sends it to the UE, and the UE performs CA transmission according to the bandwidth.
  • the base station transmits it to the UE, and the UE performs CA transmission according to the PHICH configuration.
  • T300 is used for the RRC connection establishment process
  • T301 and T311 are used for the RRC connection re-establishment process
  • T310, ⁇ 310 and 311 are used for the radio link failure process. Since the UE is currently in the connected state, the R C connection establishment process is not initiated again, and the cell 2 of the cell 2 does not need to be sent to the UE. Since the RRC connection reestablishment process is based on a single cell, T301 and T311 can save one set at the UE side. For T310, N310 and N311, it can be configured to the UE through dedicated signaling.
  • the UE does not currently have the dedicated signaling configuration T310, N310, and ⁇ 311, then when the cell 2 is the same as the T310, N310, and N311 of the cell 1, it is not sent to the UE, and the UE considers that the cell 2 is the same as the cell 1; When the T310, the N310, and the N311 of the cell 1 are different, the T310, the N310, and the N311 are sent to the UE, and the UE performs subsequent operations according to the specific processes of the T310, N310, and N311 and the radio link failure detection. CC performs radio link failure detection).
  • the UE uses different parameters for different cells, and separately maintains; if the radio link failure process is uniformly determined based on all component carriers, The UE can only use one set of parameters, which can be a network.
  • the configuration of the signaling display may also be pre-agreed by the UE and the network.
  • the base station can be configured to the UE through dedicated signaling, and the base station can configure the same or different TimeAlignmentTimer for the two according to the characteristics of the cell 1 and the cell 2. If the TimeAlignmentTimer of the cell 2 is the same as the TimeAlignmentTimer of the cell 1, it is not sent to the UE, and the UE considers that the cell 2 is the same as the cell 1; if the TimeAlignmentTimer of the cell 2 is different from the TimeAlignmentTimer of the cell 1, the TimeAlignmentTimer of the cell 2 is sent to the UE. The UE performs subsequent operations according to the TimeAlignmentTimer and the specific process of random access.
  • the UE uses different parameters for different cell/cell groups and maintains separately; if the radio link fails process
  • the UE can use only one TimeAlignmentTimer, which can be configured by the network through signaling, or pre-agreed by the UE and the network.
  • embodiment of the present invention is not limited to the LTE-A system, and other embodiments capable of carrier aggregation transmission are also applicable to the embodiments of the present invention.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the network side determines that the information type in the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located is the same, and the information type of the aggregated transmission information set corresponding to the primary serving cell where the user terminal is located is the same.
  • the aggregated transmission information set is a set of information used in the carrier aggregation transmission in the system information corresponding to the carrier aggregation cell; the network side sends the determined aggregation to the user terminal. transmit information.
  • the network side can send system information to the user terminal, so that the user terminal can know the system information of each carrier aggregation cell, so that carrier aggregation transmission and multi-carrier switching can be implemented in the LTE-A system. Further, the network side only informs the user terminal of the system information related to the carrier aggregation transmission, thereby reducing the signaling overhead and saving the consumption and power of the user terminal.

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

Abstract

Un procédé, un système et un dispositif pour transmettre des informations système sont utilisés pour informer un terminal d'utilisateur sur des informations système permettant de réaliser une transmission à agrégation de porteuses dans un système LTE-A (Long Term Evolution-Advanced). Le procédé comprend les étapes suivantes : le côté réseau détermine les informations de transmission avec agrégation qui ont le même type d'informations et un contenu différent d'informations avec l'ensemble d'informations de transmission avec agrégation correspondant à la cellule de desserte principale dans laquelle est situé le terminal de l'utilisateur, selon l'ensemble d'informations de transmission avec agrégation correspondant à chaque cellule d'agrégation de porteuse, l'ensemble d'informations de transmission avec agrégation est un ensemble d'informations qui est utilisé dans la transmission à agrégation de porteuses dans les informations système correspondantes à la cellule d'agrégation de porteuses (501); le côté réseau envoie au terminal de l'utilisateur (502) les informations de transmission avec agrégation déterminées. La présente invention permet au terminal de l'utilisateur de connaître les informations système de chaque cellule d'agrégation de porteuses, peut de réduire le surdébit de signalisation et peut économiser la consommation électrique du terminal de l'utilisateur.
PCT/CN2010/001547 2009-10-28 2010-09-30 Procédé, système et dispositif pour transmettre des informations système WO2011050564A1 (fr)

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