WO2016183746A1 - 一种信息通知方法、用户终端、第一基站及第二基站 - Google Patents

一种信息通知方法、用户终端、第一基站及第二基站 Download PDF

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Publication number
WO2016183746A1
WO2016183746A1 PCT/CN2015/079108 CN2015079108W WO2016183746A1 WO 2016183746 A1 WO2016183746 A1 WO 2016183746A1 CN 2015079108 W CN2015079108 W CN 2015079108W WO 2016183746 A1 WO2016183746 A1 WO 2016183746A1
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WIPO (PCT)
Prior art keywords
cell
base station
system information
notification message
indication message
Prior art date
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Ceased
Application number
PCT/CN2015/079108
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English (en)
French (fr)
Inventor
张涛
曹振臻
蔺波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2015/079108 priority Critical patent/WO2016183746A1/zh
Priority to EP15892125.4A priority patent/EP3288322B1/en
Priority to CN201580080010.3A priority patent/CN107615838B/zh
Priority to KR1020177035187A priority patent/KR20180002836A/ko
Priority to JP2018511303A priority patent/JP6657380B2/ja
Priority to BR112017024483-7A priority patent/BR112017024483A2/zh
Publication of WO2016183746A1 publication Critical patent/WO2016183746A1/zh
Priority to US15/813,684 priority patent/US10880756B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information notification method, a user terminal, a first base station, and a second base station.
  • the device to device (English: Device to Device, abbreviated: D2D) communication mode refers to the mutual discovery between the user equipment (English: User Equipment, abbreviation: UE) and the UE, thereby establishing a direct link and establishing a direct link through the The mode in which the road communicates.
  • the information transmitted between UEs in this mode does not need to be relayed through the base station.
  • the cell in which the UE is located is referred to as a first cell, and the cell adjacent to the first cell is referred to as a second cell.
  • the first cell and the second cell may be cells managed by the same base station, or may be cells under different base stations.
  • the D2D resource used by the UE for D2D communication may be provided by the second cell.
  • the UE needs to receive the system information sent by the second cell, so as to learn the D2D resource configuration provided by the second cell, and then perform D2D.
  • the D2D resource configuration of the second cell does not change. Therefore, the UE needs to periodically read the system information of the second cell to obtain the latest D2D resource configuration provided by the second cell for the UE. D2D can be performed using the latest D2D resource configuration provided by the second cell.
  • the system information of the second cell is periodically read.
  • the D2D resource configuration of the second cell does not change frequently. In this case, if the period in which the UE reads the system information of the second cell is short, the UE frequently reads the system information of the second cell.
  • the D2D resource configuration provided by the second cell obtained by the UE is the same, the battery power of the UE is consumed, thereby shortening the standby time of the UE; if the period of the UE reading the second cell system information is set longer, It is possible that the D2D resource configuration of the second cell has changed but the UE does not read it in time, which will cause the UE to use The problem of expired D2D resource configuration.
  • the present invention provides an information notification method, a user terminal, a first base station, and a second base station, where the D2D resource configuration of the second cell is changed but the UE does not read in time, which causes the UE to use the expired D2D resource. Configuration problem.
  • an information notification method including: a user equipment UE receives a notification message sent by a first cell that is passed by a first base station, where the notification message is used to instruct the UE to acquire a second cell that is controlled by the second base station. System information; the UE acquires system information of a second cell that is controlled by the second base station according to the received notification message.
  • the notification message includes a cell identifier of a second cell
  • the UE acquires a second base station according to the received notification message.
  • the system information of the second cell includes: the UE acquiring system information of the second cell that is controlled by the second base station according to the cell identifier of the second cell that is included in the received notification message.
  • the notification message includes a time when the system information of the second cell is changed; and the UE acquires the second base station according to the received the notification message. And the system information of the second cell that is managed by the second base station is obtained by the UE according to the time when the system information of the second cell in the received notification message is changed.
  • the notification message includes content that is changed by system information of the second cell
  • the UE acquires the second base station according to the received notification message.
  • the system information of the second cell that is managed includes: the content that is changed by the UE according to the received system information of the second cell in the notification message, and when it is determined that the system information of the second cell needs to be re-acquired, System information of the second cell under the jurisdiction of the second base station.
  • the notification message includes information indicating a manner in which the UE obtains system information of the second cell, and the UE follows the received notification message.
  • Obtaining system information of the second cell that is controlled by the second base station including: Obtaining the system information of the second cell that is controlled by the second base station, in a manner that the system information of the second cell is obtained by the received notification message, where the UE obtains the system information of the second cell: the UE reads System information of the second cell broadcasted by the second cell; or receiving, by the UE, system information of the second cell sent by the first cell.
  • the notification message to the system information of the second cell broadcasted by the second cell is read; or if the UE is in an idle state, the UE establishes a connection with the first cell, and is establishing Obtaining system information of the second cell on the connection.
  • the second aspect provides an information notification method, including: receiving, by the first base station, an indication message sent by the second base station, where the indication message is used to notify the first base station to send a notification message to the user equipment UE;
  • the base station sends a notification message to the UE by using the first cell that is in the jurisdiction, and the notification message is used to notify the UE to obtain system information of the second cell that is controlled by the second base station.
  • the first base station receives the indication message sent by the second base station, where the first base station directly receives the indication message sent by the second base station; The first base station receives the indication message sent by the second base station that is forwarded by the mobility management entity MME.
  • the indication message includes a cell identifier of the second cell; the first base station The notification message sent by the first cell to the UE is also included in the notification message of the second cell.
  • the indication message includes a time when the system information of the second cell is changed; the first base station passes the first cell to the UE
  • the notification message sent also includes the time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by system information of the second cell, where the first base station passes the first cell that is in the jurisdiction
  • the notification message sent by the UE further includes content of the system information change of the second cell.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell;
  • the notification message sent by the cell to the UE further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell in a manner that the UE reads the System information of the second cell broadcasted by the second cell; or receiving, by the UE, system information of the second cell sent by the first cell.
  • the first base station sends the notification message to the UE by using the first cell that is controlled, including: the first base station acquiring the device a UE to the device D2D communication mode; the first base station sends the notification message to the acquired UE through the first cell under the jurisdiction.
  • the first base station acquires the D2D communication mode in at least one of the following manners UE: the first base station acquires a UE in a D2D communication mode in an MME; the first base station in the second base station acquires a UE in a D2D communication mode; and the first base station acquires a stored D2D communication Mode of the UE.
  • the UE in the D2D communication mode includes at least one of the following: The UE in the D2D communication mode is configured by using the resource provided by the second cell; and the UE in the D2D communication mode is on the frequency of the second cell.
  • the third aspect provides an information notification method, including: determining, by the second base station, whether the user equipment UE is required to obtain system information of the second cell that is controlled by the second base station; and determining that the UE is required to obtain the second And the second base station sends an indication message to the first base station, where the indication message is used to notify the first base station to send a notification message to the UE by using the first cell under the jurisdiction, The notification message is used to notify the UE to obtain system information of a second cell that is controlled by the second base station.
  • the second base station sends an indication message to the first base station, where the second base station directly sends the indication to the first base station Or the second base station forwards the indication message to the first base station by using a mobility management entity MME.
  • the indication message includes a cell identifier of the second cell;
  • the indication message sent to the first base station further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed;
  • the indication message sent by the second base station to the first base station further includes the time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by the system information of the second cell;
  • the indication message sent by the second base station to the first base station further includes content of the system information change of the second cell.
  • the indication message further includes a manner of indicating that the UE obtains system information of the second cell
  • the information sent by the second base station to the first base station further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell: Reading system information of the second cell broadcast by the second cell; or receiving, by the UE, system information of the second cell sent by the first cell.
  • a fourth aspect provides a user terminal, including: a receiving module, configured to receive a notification message sent by a first cell that is passed by a first base station, where the notification message is used to indicate that the UE acquires a second base station The system information of the second cell, the acquiring module, configured to acquire system information of the second cell that is controlled by the second base station according to the received notification message.
  • the notification message includes a cell identifier of the second cell
  • the acquiring module is specifically configured to include, according to the received notification message
  • the cell identifier of the second cell acquires system information of the second cell that is controlled by the second base station.
  • the notification message includes a time when the system information of the second cell is changed
  • the acquiring module is specifically configured to: according to the received notification The time when the system information of the second cell in the message changes, acquiring system information of the second cell that is controlled by the second base station.
  • the notification message includes content that is changed by the system information of the second cell
  • the acquiring module is specifically configured to follow the received notification.
  • the content of the system information change of the second cell in the message is used to obtain the system information of the second cell that is controlled by the second base station when it is determined that the system information of the second cell needs to be re-acquired.
  • the notification message includes information indicating a manner in which the UE obtains system information of the second cell
  • the acquiring module is specifically configured to receive the And obtaining, by the notification message, the system information of the second cell that is obtained by the second base station, where the system information of the second cell is obtained by: reading the second cell Broadcasting system information of the second cell; or receiving system information of the second cell sent by the first cell.
  • the acquiring module is configured to: read, by the received notification message, the second cell that is broadcast by the second cell System information; or if the UE is in an idle state, establishing a connection with the first cell, and acquiring system information of the second cell on the established connection.
  • the fifth aspect provides a first base station, including: a receiving module, configured to receive an indication message sent by the second base station, where the indication message is used to notify the first base station to send a notification message to the user equipment UE; And sending, by the first cell that is in the jurisdiction, a notification message to the UE, where the notification message is used to notify the UE to obtain system information of a second cell that is controlled by the second base station.
  • the receiving module is configured to directly receive the indication message sent by the second base station, or receive the second base station that is forwarded by the mobility management entity MME.
  • the indication message includes a cell identifier of the second cell;
  • the sending module specifically, the notification message sent by the first cell to the UE by the jurisdiction further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed, and the sending module is specifically configured to pass the first cell of the jurisdiction
  • the notification message sent by the UE further includes a time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by the system information of the second cell
  • the sending module is specifically configured to pass the first cell that is subject to the jurisdiction
  • the notification message sent to the UE further includes content of system information change of the second cell.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell, where the sending module is specifically configured to pass the jurisdiction
  • the notification message sent by the first cell to the UE further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell by: UE reading System information of the second cell broadcasted by the second cell; or receiving, by the UE, system information of the second cell sent by the first cell.
  • the method further includes: an acquiring module, configured to acquire a UE in a device-to-device D2D communication mode; and the sending module is specifically configured to pass the jurisdiction A cell sends the notification message to the acquired UE.
  • the acquiring module is configured to obtain at least one of the following manners The UE in the D2D communication mode: acquires the UE in the D2D communication mode in the MME; acquires the UE in the D2D communication mode in the second base station; and acquires the UE in the D2D communication mode stored in the first base station.
  • the UE that is obtained by the acquiring module in the D2D communication mode includes at least the following One of the following: performing D2D communication using the resource configuration provided by the second cell a UE in a signaling mode; a UE in a D2D communication mode on a frequency at which the second cell is located.
  • a second base station including: a determining module, configured to determine whether the user equipment UE is required to obtain system information of a second cell that is controlled by the second base station, and a sending module, configured to determine that the UE is required
  • the indication message is sent to the first base station, where the indication message is used to notify the first base station to send a notification message to the UE by using the first cell in the jurisdiction.
  • the notification message is used to notify the UE to obtain system information of a second cell that is controlled by the second base station.
  • the sending module is configured to send an indication message directly to the first base station, or forward the indication message by using a mobility management entity MME. To the first base station.
  • the indication message includes a cell identifier of the second cell
  • the sending module the indication message that is specifically used for sending to the first base station further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed;
  • the sending module specifically, the indication message sent to the first base station further includes a time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by the system information of the second cell;
  • the sending module specifically, the indication message sent to the first base station further includes content that changes system information of the second cell.
  • the indication message further includes a manner of indicating that the UE obtains system information of the second cell
  • the information that is sent by the sending module to the first base station further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell.
  • the UE reads the system information of the second cell that is broadcast by the second cell; or the UE receives the system information of the second cell that is sent by the first cell.
  • the seventh aspect provides a user terminal, including: a memory, configured to store a program instruction, and an interface, configured to receive a notification message sent by the first cell that is passed by the first base station, where the notification message is used to indicate that the UE acquires a system information of the second cell that is controlled by the second base station, and a signal processor, configured to acquire, according to the program instruction stored in the memory, the system of the second cell that is controlled by the second base station according to the notification message received by the interface information.
  • the notification message includes a cell identifier of the second cell, and the signal processor is configured to be used according to the received notification message.
  • the included cell identifier of the second cell acquires system information of the second cell that is controlled by the second base station.
  • the notification message includes a time when the system information of the second cell is changed, and the signal processor is specifically configured to be used according to the received The time when the system information of the second cell in the notification message is changed, and acquiring the system information of the second cell that is controlled by the second base station.
  • the notification message includes content that is changed by the system information of the second cell, and the signal processor is specifically configured to be used according to the received
  • the content of the system information change of the second cell in the notification message acquires system information of the second cell that is controlled by the second base station when it is determined that the system information of the second cell needs to be re-acquired.
  • the notification message includes information indicating a manner in which the UE obtains system information of the second cell
  • the signal processor is specifically configured to receive And obtaining, by the notification message, the system information of the second cell, the system information of the second cell that is controlled by the second base station, where the system information of the second cell is obtained by: reading the second System information of the second cell broadcasted by the cell; or receiving system information of the second cell sent by the first cell.
  • the signal processor is configured to: read, by the received notification message, the second cell that is broadcast by the second cell System information; or if the UE is in an idle state, establishing a connection with the first cell, and Obtaining system information of the second cell on the established connection.
  • a first base station including: a memory, configured to store a program instruction, and an interface, configured to receive an indication message sent by the second base station, where the indication message is used to notify the first base station to the user equipment
  • the UE sends a notification message
  • the signal processor is configured to send a notification message to the UE by using the first cell that is in charge according to the stored program instruction, where the notification message is used to notify the UE to obtain the second System information of the second cell under the jurisdiction of the base station.
  • the interface is used to directly receive the indication message sent by the second base station, or the second base station that is sent by the mobile management entity MME The indication message.
  • the indication message includes a cell identifier of the second cell;
  • the notification message sent by the first cell that is determined by the first base station to the UE further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed, and the signal processor is specifically configured to be managed by the first base station.
  • the notification message sent by the first cell to the UE further includes a time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by the system information of the second cell, where the signal processor is specifically configured to be managed by the first base station
  • the notification message sent by the first cell to the UE further includes content of system information changes of the second cell.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell, where the signal processor is specifically configured to pass
  • the notification message sent by the first cell to the UE by the first cell to the UE further includes information indicating a manner in which the UE obtains system information of the second cell, where the manner in which the UE obtains system information of the second cell is The UE reads the system information of the second cell that is broadcast by the second cell; or the UE receives the system information of the second cell that is sent by the first cell.
  • the signal processor is further configured to acquire a UE in a device-to-device D2D communication mode; and obtain the first cell by the first base station The UE sends the notification message.
  • the signal processor is used to obtain at least one of the following manners
  • the UE in the D2D communication mode acquires the UE in the D2D communication mode in the MME; acquires the UE in the D2D communication mode in the second base station; and acquires the UE in the D2D communication mode stored in the first base station.
  • the UE that is obtained by the signal processor in the D2D communication mode includes at least One of the following: a UE that performs a D2D communication mode using a resource configuration provided by the second cell; and a UE that is in a D2D communication mode on a frequency at which the second cell is located.
  • a ninth aspect provides a second base station, including: a memory, configured to store program instructions, and a signal processor, configured to determine, according to program instructions stored in the memory, whether the user equipment UE is required to obtain the second base station The system information of the second cell, when determining that the UE needs to obtain the system information of the second cell that is controlled by the second base station, sending an indication message to the first base station, where the indication message is used to notify the first base station And sending, by the first cell that is in the jurisdiction, a notification message, where the notification message is used to notify the UE to obtain system information of the second cell that is controlled by the second base station.
  • the signal processor is configured to send an indication message directly to the first base station, or send the indication message to a mobility management entity MME. Forwarding to the first base station.
  • the indication message includes a cell identifier of the second cell; Specifically, the indication message sent to the first base station further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed, and the signal processor, where the indication message that is specifically used to send to the first base station, further includes system information of the second cell. The time of change.
  • the indication message further includes content that changes system information of the second cell;
  • the signal processor specifically for transmitting the indication message to the first base station, further includes content of the system information change of the second cell.
  • the indication message further includes a manner of indicating that the UE obtains system information of the second cell
  • the method is: the UE reads the system information of the second cell that is broadcast by the second cell; or the UE receives the system information of the second cell that is sent by the first cell.
  • the second base station sends the indication information to the first base station according to the foregoing technical solution, and the first base station sends a notification message to the UE according to the received indication information, and the UE receives the notification message sent by the first base station by the first cell, according to the
  • the received notification message acquires system information of the second cell that is controlled by the second base station, and the system information of the second cell that is controlled by the second base station can notify the UE to obtain the transformed system information when the change occurs, and the UE does not need to periodically
  • the system information of the second cell is obtained, the battery power of the UE is saved, and the standby time of the UE is shortened.
  • the UE can also obtain the changed system information in time.
  • FIG. 1 is a schematic structural diagram of a structure of an information notification system according to the present invention.
  • FIG. 2 is a flowchart of a method for notifying information according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for notifying information according to Embodiment 4 of the present invention.
  • FIG. 4 is a schematic structural diagram of a structure of an information notification apparatus according to Embodiment 5 of the present invention.
  • FIG. 5 is a schematic structural diagram of a first base station according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a second base station according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic structural diagram of a structure of a user terminal according to an embodiment of the present invention.
  • the D2D resource configuration of the second cell may be changed, but the system information of the second cell is frequently read by the UE, and the battery power of the UE is consumed, or the period in which the UE reads the second cell system information is long. If the UE does not read in time, the UE may use the D2D resource configuration that has expired.
  • the second base station sends the indication information to the first base station, and the first base station sends the indication information according to the received indication information.
  • the UE sends a notification message, and the UE receives the notification message sent by the first cell by the first cell, and obtains the system information of the second cell that is controlled by the second base station according to the received notification message, and the second cell that is controlled by the second base station.
  • the system information changes, the UE can be notified to obtain the transformed system information, and the UE does not need to periodically obtain the system information of the second cell, which saves the battery power of the UE, shortens the standby time of the UE, and, in addition, the second cell
  • the UE can also obtain the changed system information in time.
  • the first embodiment of the present invention provides an information notification system.
  • the cell and the base station make a first and second distinction.
  • the system includes at least one first cell, at least one second cell, and at least one UE. It may also include at least one mobility management entity (English: Mobility Management Entity, abbreviation: MME) (not shown).
  • MME Mobility Management Entity
  • the base station to which the first cell belongs is referred to as a first base station
  • the base station to which the second cell belongs is referred to as a second base station
  • the first cell of the first base station and the first cell under the jurisdiction of the first base station as described later
  • the second cell of the second base station has the same meaning as the second cell of the second base station.
  • the second base station and the first base station may be different base stations or may be the same base station.
  • the information exchange between the two is the information exchange between the modules inside the same base station.
  • the UE may transmit data in the D2D communication mode in the second cell. among them:
  • the second base station is configured to send an indication message, where the indication message is used to notify the first base station to send a notification message to the UE.
  • the second base station may send the indication message directly to the MME, and the MME sends the indication message to the first base station, and the second base station may also directly send the indication message to the first base station.
  • the indication message sent by the second base station may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be the physical cell identifier of the cell (English: Physical Cell Identifier, abbreviated as PCI) and the identifier of the frequency of the cell.
  • PCI Physical Cell Identifier
  • a cell can share a PCI on different frequencies, so when using a PCI to identify a cell, it is required to be combined with a frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identifier may be an E-UTRAN Cell Global Identifier (ECGI) of the evolved universal mobile communication system of the cell.
  • ECGI E-UTRAN Cell Global Identifier
  • Second The time when the system information of the second cell changes.
  • the time when the system information of the second cell is changed may be a system frame number (English: System Frame Number, abbreviation: SFN).
  • SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame.
  • the time when the system information of the second cell changes indicates the system frame N of the first cell, and the second cell is in the first cell.
  • the system information of the cell frame N+m of a cell changes the system information, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured to the UE by the first base station.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 (English: System Information Block 19, abbreviated SIB19) of the second cell is to be changed, The indication message contains an indication that the SIB 19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the indication message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the indication message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • A The UE directly reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the indication message may include a list of cells and indicate that all are included in this System information of the cells in the list, the UE needs to obtain one of the foregoing manners A or B; or, the indication message may include a list of frequencies, and indicates the cells of all the frequencies included in the list.
  • the system information UE needs to obtain one of the foregoing manners A or B.
  • the indication message may include a list of a public land mobile network (English: Public Land Mobile Network, abbreviated: PLMN), and indicates that all are included in The system information UE of the cell on the PLMN in this list needs to be acquired by one of the above manners A or B.
  • PLMN Public Land Mobile Network
  • the first base station is configured to receive an indication message sent by the second base station, and send a notification message to the UE by using the first cell that is in the jurisdiction.
  • the first base station may directly receive the indication message sent by the second base station, or may obtain the indication message sent by the second base station from the MME, according to the different receiving objects of the indication message sent by the second base station.
  • the first base station can obtain at least one of the following information in the obtained indication message:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • a cell can share a PCI on different frequencies, so when using a PCI to identify a cell, it is required to be combined with a frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • Second The time when the system information of the second cell is changed.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also be at a predetermined time after the system frame
  • the system information is changed, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and the second cell changes the system information at the beginning or the end of the system frame N+m of the first cell, where m can take 1, 2 or 3, etc., and the value is defaulted by the system, or is pre-configured to the UE by the first base station.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 (English: System Information Block 19, abbreviated SIB19) of the second cell is to be changed, The indication message contains an indication that the SIB 19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the indication message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the indication message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • the UE reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the indication message may include a list of cells, and the system information UE indicating all the cells included in the list needs to be acquired by one of the foregoing manners A or B; or the indication message may include a frequency. List, and the system information UE indicating the cells on all frequencies included in this list needs to be acquired by one of the above manners A or B; or alternatively, the indication message may include a PLMN list and indicate all inclusions For the system information of the cell on the PLMN in this list, the UE needs to obtain one of the foregoing manners A or B.
  • the notification message sent by the first base station to the UE may include information obtained in the indication message, such as the second cell under the jurisdiction of the second base station.
  • the cell identifier, the time when the system information of the second cell changes, the content of the system information change of the second cell, all or part of the second cell system information, and information indicating the manner in which the UE acquires the second cell system information, and the like, please refer to the detailed explanation above, and I will not repeat them.
  • the first base station may send a notification message to the UE when the first base station does not receive the indication message sent by the second base station, where the information in the notification message is the first base station itself.
  • the second base station does not send an indication message to the first base station
  • the first base station itself determines that the UE needs to obtain the system information of the second cell of the second base station, and determines the manner in which the UE obtains the system information
  • the first base station may The UE sends a notification message, where the message includes the manner in which the UE determined by the first base station itself obtains the system information of the second cell of the second base station.
  • the first base station may also perform some conversion on the information carried in the indication message, and then send the new information obtained by the conversion to the UE in the notification message. For example, the first base station receives the indication message sent by the second base station, where the indication message includes the time when the second cell system information changes, but the time is the SFN of the second cell, and the first base station can Converting the SFN into a SFN of the first cell, and then transmitting the converted SFN of the first cell as the time of the second cell system information change in a notification message UE.
  • the first base station sends a notification message to the UE, and may send a notification message to all UEs in the first cell, or may send a notification message to the UE in the D2D communication mode in the first cell.
  • the first base station If the first base station sends a notification message to the UE in the D2D communication mode in the first cell, the first base station needs to know which UEs are in the D2D communication mode.
  • the UE in the D2D communication mode includes at least one of the following:
  • A UE in D2D mode on the second cell.
  • the UE in the D2D mode on the second cell refers to the UE that performs the D2D communication mode by using the resource configuration provided by the second cell.
  • the first base station learns which UEs are in the D2D communication mode according to at least one of the following manners:
  • the first way the first base station learns from the MME.
  • the first base station acquires the UE in the D2D communication mode in the MME.
  • the second mode the first base station acquires the UE in the D2D communication mode in the second base station.
  • the third mode the first base station acquires the stored UE in the D2D communication mode.
  • the first base station pre-stores information about which UEs are in the D2D communication mode.
  • the UE needs to perform authentication at the MME, the second base station, or the first base station before using the D2D communication mode to transmit data, and only after the MME, the second base station, or the first base station passes the authentication, the UE can The D2D communication mode is executed to transfer data. Therefore, in one or all of the second base station, the MME, or the first base station, information on which UEs are in the D2D communication mode is stored.
  • the UE is configured to receive a notification message that is sent by the first cell by the first cell, and the UE acquires system information of the second cell that is controlled by the second base station according to the received notification message.
  • the notification message received by the UE is used to instruct the UE to acquire system information of the second cell that is controlled by the second base station.
  • the notification message received by the UE may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the notification message includes the cell identifier of the second cell
  • the second cell is a cell with system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • a cell can share a PCI on different frequencies, so when using a PCI to identify a cell, it is required to be combined with a frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the received notification message, where the second cell is the second cell corresponding to the cell identifier in the notification message.
  • Second The time when the system information of the second cell is changed.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured to the UE by the first base station.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the time when the system information of the second cell in the received notification message is changed.
  • the UE acquires the system information of the second cell corresponding to the cell identifier according to the time when the system information of the second cell in the received notification message is changed. .
  • the UE may acquire the second cell at the time indicated by the information. System information.
  • the time for the UE to acquire the system information of the second cell may be as follows:
  • the UE When receiving the notification message sent by the first base station, the UE immediately starts to acquire the system information of the second cell corresponding to the second cell identifier in the notification message.
  • the UE determines the time for acquiring the second cell system information according to the time when the notification message is received, and acquires the system information of the second cell corresponding to the second cell identifier when the time of acquiring the system information of the second cell arrives.
  • the time can be divided into a system information modification period (English: Modification Period, abbreviation: MP), and each MP includes several consecutive system frames of the first cell (English: System Frame, abbreviation) :SF).
  • MP Modification Period
  • SF System Frame, abbreviation
  • the first base station sends a notification message to the UE in the Nth MP
  • the UE starts to read the system broadcast of the second cell in the N+m MPs to obtain system information of the second cell, or the UE is in the N+th
  • the m-MP initiates a connection request to the first base station to receive the system information of the second cell sent by the first base station on the established connection, where the value of m may be 1, 2, 3, etc., and the value of m It may be the default or the first base station is pre-configured to the UE.
  • the third type the content of the system information change of the second cell.
  • the system information of the second cell may be changed, and the UE determines that the system information of the second cell needs to be re-acquired according to the content of the system information of the second cell in the received notification message. And acquiring system information of the second cell that is controlled by the second base station.
  • the notification message includes information about which content in the system information of the second cell is to be changed, and the UE may determine whether it is necessary to reacquire the system information of the second cell. Determining, according to the information in the system information of the second cell indicated by the notification message, whether the UE needs to re-acquire the system information of the second cell, and obtaining the second information after determining that the system information of the second cell needs to be re-acquired.
  • the system information of the second cell corresponding to the cell identifier.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the notification message includes indicating that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the notification message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 (English: System Information Block 19, abbreviated SIB19) of the second cell is to be changed, The notification message contains a message indicating that the SIB 19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the UE that is using the D2D resource configuration of the second cell needs to re-acquire the system information of the second cell, and other The UE may not acquire the system information of the second cell.
  • the UE that is using the SIB19 of the second cell needs to re-acquire the system information of the second cell, and other UEs may The system information of the second cell is not acquired.
  • the notification message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the notification message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • the UE acquires the second jurisdiction of the second base station according to the method of obtaining the system information of the second cell in the received notification message. System information of the community.
  • the UE reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the notification message may include a list of cells, and the system information UE indicating all the cells included in the list needs to be acquired by one of the foregoing manners A or B; or the notification message may include a list of frequencies. And indicating system information of all cells included in the frequency in the list, the UE needs to obtain one of the foregoing manners A or B; or, the notification message may include a list of PLMNs, and indicates that all are included in For the system information of the cell on the PLMN in this list, the UE needs to obtain one of the foregoing manners A or B.
  • the UE When the notification message includes all or part of the system information of the second cell, the UE directly obtains the system information of the second cell from the notification message. When the notification message does not include all or part of the system information of the second cell, the UE selects one of the two methods according to the fifth type of information to obtain the system information of the second cell. If the fifth type of information indicates that the UE acquires system information of the second cell by using the first mode, the UE reads the system broadcast of the second cell to obtain system information of the second cell.
  • the UE may obtain the system information of the second cell broadcasted by the second cell by using the first base station according to the received notification message, or the UE reads the system information of the second cell broadcast by the second cell according to the received notification message.
  • the UE If the UE is in the idle state, the UE establishes a connection with the first cell, and acquires system information of the second cell on the established connection.
  • the fifth type of information indicates that the UE obtains the system information of the second cell by using the second mode: when the UE and the first base station are connected, the UE receives the system information of the second cell sent by the first base station on the connection; When the UE is not connected to the first base station or the UE is in the idle state, the UE initiates a connection request to the first base station to establish a connection with the first base station and receive system information of the second cell sent by the first base station on the established connection.
  • the second embodiment of the present invention provides an information notification method.
  • the cell and the base station make a first and second distinction.
  • the base station to which the first cell belongs is referred to as the first base station
  • the base station to which the second cell belongs is referred to as the second base station.
  • the first cell of the first base station as described later has the same meaning as the first cell under the jurisdiction of the first base station.
  • the second cell of the second base station has the same meaning as the second cell of the second base station.
  • the second base station and the first base station may be different base stations or may be the same base station.
  • the information exchange between the second base station and the first base station in each embodiment is information interaction between modules in the same base station.
  • the UE may transmit data in the D2D communication mode in the second cell.
  • the specific processing flow is as follows:
  • Step 201 The second base station determines whether the UE needs to obtain the system information of the second cell that is controlled by the second base station. If the determination result is yes, the execution is not 201, and the processing ends.
  • Step 202 When it is determined that the UE needs to obtain system information of the second cell that is controlled by the second base station, the second base station sends an indication message to the first base station.
  • the indication message is used to notify the first base station to send a notification message to the UE by using the first cell that is in the jurisdiction, and the notification message is used to notify the UE to obtain system information of the second cell that is controlled by the second base station.
  • the second base station may send the indication message directly to the MME, and the MME sends the indication message to the first base station, and the second base station may also directly send the indication message to the first base station.
  • the indication message sent by the second base station may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • the cells on different frequencies can share one PCI. Therefore, when the PCI is used to identify the cell, it is required to be combined with the frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identifier can be the ECGI of the cell
  • Second The time when the system information of the second cell changes.
  • the time when the system information of the second cell is changed may be a system frame number (English: System Frame Number, abbreviation: SFN).
  • SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured to the UE by the first base station.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 (English: System Information Block 19, abbreviated SIB19) of the second cell is to be changed, The indication message contains an indication that the SIB 19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the indication message may include all of the second cell system information, that is, The latest system information of the second cell may also be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the indication message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • A The UE directly reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the indication message may include a list of cells, and indicates system information of all cells included in the list, and the UE needs to obtain one of the foregoing manners A or B; or the indication message may include one a list of frequencies, and indicating system information of all cells included in the frequency in this list, the UE needs to obtain one of the foregoing manners A or B; or, the indication message may include a public land mobile network. :Public Land Mobile Network, abbreviated: PLMN), and indicates that all system information UEs of cells included in the PLMN in this list need to take one of the above modes A or B.
  • PLMN Public Land Mobile Network
  • Step 203 The first base station receives the indication message sent by the second base station.
  • the indication message is used to notify the first base station to send a notification message to the UE, and the first base station sends a notification message to the UE by using the first cell that is in the jurisdiction, and the notification message is used to notify the UE to obtain the second base station.
  • System information of the second cell is used to notify the first base station to send a notification message to the UE, and the first base station sends a notification message to the UE by using the first cell that is in the jurisdiction, and the notification message is used to notify the UE to obtain the second base station.
  • the first base station may directly receive the indication message sent by the second base station, or may obtain the indication message sent by the second base station from the MME, according to the different receiving objects of the indication message sent by the second base station.
  • the first base station can obtain at least one of the following information in the obtained indication message:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be all second by the second base station.
  • the cell identifier of the cell may also be the identifier of the second cell in which the system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • the cells on different frequencies can share one PCI. Therefore, when the PCI is used to identify the cell, it is required to be combined with the frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • Second The time when the system information of the second cell is changed.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured to the UE by the first base station.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 of the second cell (English: System Information Block 19, abbreviated SIB19) is about to change, the indication message contains the indication that the SIB19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the indication message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the indication message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • the UE reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the indication message may include a list of cells, and the system information UE indicating all the cells included in the list needs to be acquired by one of the foregoing manners A or B; or the indication message may include a frequency. List, and the system information UE indicating the cells on all frequencies included in this list needs to be acquired by one of the above manners A or B; or alternatively, the indication message may include a PLMN list and indicate all inclusions For the system information of the cell on the PLMN in this list, the UE needs to obtain one of the foregoing manners A or B.
  • the notification message sent by the first base station to the UE may include information obtained in the indication message, such as the second cell under the jurisdiction of the second base station.
  • the cell identifier, the time when the system information of the second cell changes, the content of the system information change of the second cell, all or part of the second cell system information, and information indicating the manner in which the UE acquires the second cell system information, and the like, please refer to the detailed explanation above, and I will not repeat them.
  • the first base station may send a notification message to the UE when the first base station does not receive the indication message sent by the second base station, where the information in the notification message is the first base station itself.
  • the second base station does not send an indication message to the first base station
  • the first base station itself determines that the UE needs to obtain the system information of the second cell of the second base station, and determines the manner in which the UE obtains the system information
  • the first base station may The UE sends a notification message, where the message includes the manner in which the UE determined by the first base station itself obtains the system information of the second cell of the second base station.
  • the first base station may also perform some conversion on the information carried in the indication message, and then send the new information obtained by the conversion to the UE in the notification message. For example, the first base station receives the indication message sent by the second base station, where the indication message includes the time when the second cell system information changes, but the time is the SFN of the second cell, and the first base station can The SFN is converted into an SFN of the first cell, and then the time when the converted SFN of the first cell is changed as the information of the second cell system information is sent to the UE in a notification message.
  • Step 204 The first base station sends a notification message to the UE.
  • the notification message may be sent to all UEs in the first cell, or may be sent to the UE in the D2D communication mode in the first cell.
  • the first base station If the first base station sends a notification message to the UE in the D2D communication mode in the first cell, the first base station needs to know which UEs are in the D2D communication mode.
  • the UE in the D2D communication mode includes at least one of the following:
  • A UE in D2D mode on the second cell.
  • the UE in the D2D mode on the second cell refers to the UE that performs the D2D communication mode by using the resource configuration provided by the second cell.
  • the first base station learns which UEs are in the D2D communication mode according to at least one of the following manners:
  • the first way the first base station learns from the MME.
  • the first base station acquires the UE in the D2D communication mode in the MME.
  • the second mode the first base station acquires the UE in the D2D communication mode in the second base station.
  • the third mode the first base station acquires the stored UE in the D2D communication mode.
  • the first base station pre-stores information about which UEs are in the D2D communication mode.
  • the UE needs to perform authentication at the MME, the second base station, or the first base station before using the D2D communication mode to transmit data, and only after the MME, the second base station, or the first base station passes the authentication, the UE can The D2D communication mode is executed to transfer data. Therefore, in one or all of the second base station, the MME, or the first base station, information on which UEs are in the D2D communication mode is stored.
  • Step 205 Receive a notification message sent by the first base station by the first cell under the jurisdiction.
  • Step 206 The UE acquires system information of the second cell that is controlled by the second base station according to the received notification message.
  • the notification message received by the UE is used to instruct the UE to acquire system information of the second cell that is controlled by the second base station.
  • the notification message received by the UE may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • the cells on different frequencies can share one PCI. Therefore, when the PCI is used to identify the cell, it is required to be combined with the frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the received notification message, where the second cell is the second cell corresponding to the cell identifier in the notification message.
  • Second The time when the system information of the second cell is changed.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured to the UE by the first base station.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the time when the system information of the second cell in the received notification message is changed.
  • the UE acquires the system information of the second cell corresponding to the cell identifier according to the time when the system information of the second cell in the received notification message is changed. .
  • the UE may acquire system information of the second cell at the time indicated by the information.
  • the time for the UE to acquire the system information of the second cell may be as follows:
  • the UE When receiving the notification message sent by the first base station, the UE immediately starts to acquire the system information of the second cell corresponding to the second cell identifier in the notification message.
  • the UE determines the time for acquiring the second cell system information according to the time when the notification message is received, and acquires the system information of the second cell corresponding to the second cell identifier when the time of acquiring the system information of the second cell arrives.
  • the time may be divided into a system information modification period (English: Modification Period, abbreviation: MP), and each MP includes several consecutive first cells.
  • System frame English: System Frame, abbreviation: SF.
  • the first base station sends a notification message to the UE in the Nth MP
  • the UE starts to read the system broadcast of the second cell in the N+m MPs to obtain system information of the second cell, or the UE is in the N+th
  • the m-MP initiates a connection request to the first base station to receive the system information of the second cell sent by the first base station on the established connection, where the value of m may be 1, 2, 3, etc., and the value of m It may be the default or the first base station is pre-configured to the UE.
  • the third type the content of the system information change of the second cell.
  • the system information of the second cell may be changed, and the UE determines that the system information of the second cell needs to be re-acquired according to the content of the system information of the second cell in the received notification message. And acquiring system information of the second cell that is controlled by the second base station.
  • the notification message includes information about which content in the system information of the second cell is to be changed, and the UE may determine whether it is necessary to reacquire the system information of the second cell. Determining, according to the information in the system information of the second cell indicated by the notification message, whether the UE needs to re-acquire the system information of the second cell, and obtaining the second information after determining that the system information of the second cell needs to be re-acquired.
  • the system information of the second cell corresponding to the cell identifier.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the notification message includes indicating that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the notification message includes indicating that the cell reselection configuration is to be changed; if the system information block 19 (English: System Information Block 19, abbreviated SIB19) of the second cell is to be changed, The notification message contains a message indicating that the SIB 19 is about to change.
  • SIB19 System Information Block 19, abbreviated SIB19
  • the D2D resource configuration will be changed.
  • the UE that is using the D2D resource configuration of the second cell needs to re-acquire the system information of the second cell, and the other UEs may not acquire the system information of the second cell.
  • the UE that is using the SIB19 of the second cell needs to re-acquire the system information of the second cell, and other UEs may The system information of the second cell is not acquired.
  • the notification message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the fifth type the manner in which the UE acquires the second cell system information.
  • the notification message may further include information indicating a manner in which the UE acquires the second cell system information. This information indicates how the UE should acquire the system information of the second cell.
  • the UE acquires system information of the second cell that is controlled by the second base station in a manner that the system information of the second cell is obtained in the received notification message.
  • the UE reads the system broadcast of the second cell to obtain its system information.
  • the UE receives system information of the second cell sent by the first base station.
  • the notification message may include a list of cells, and the system information UE indicating all the cells included in the list needs to be acquired by one of the foregoing manners A or B; or the notification message may include a list of frequencies. And indicating system information of all cells included in the frequency in the list, the UE needs to obtain one of the foregoing manners A or B; or, the notification message may include a list of PLMNs, and indicates that all are included in For the system information of the cell on the PLMN in this list, the UE needs to obtain one of the foregoing manners A or B.
  • the UE When the notification message includes all or part of the system information of the second cell, the UE directly Obtaining system information of the second cell from the notification message. When the notification message does not include all or part of the system information of the second cell, the UE selects one of the two methods according to the fifth type of information to obtain the system information of the second cell. If the fifth type of information indicates that the UE acquires system information of the second cell by using the first mode, the UE reads the system broadcast of the second cell to obtain system information of the second cell.
  • the fifth type of information indicates that the UE obtains the system information of the second cell by using the second method: when the UE and the first base station are connected, the UE receives the system information of the second cell sent by the first base station on the connection; When the UE and the first base station are not connected, the UE initiates a connection request to the first base station to establish a connection with the first base station and receive system information of the second cell sent by the first base station on the established connection.
  • An embodiment of the present invention provides an information notification system.
  • the system architecture is as shown in FIG. 1.
  • the system includes at least one second cell, at least one first cell, at least one UE, and at least one MME.
  • the base station to which the first cell belongs is referred to as a first base station
  • the base station to which the second cell belongs is referred to as a second base station
  • the first cell of the first base station and the first cell under the jurisdiction of the first base station as described later
  • the second cell of the second base station has the same meaning as the second cell of the second base station.
  • the second base station and the first base station may be different base stations or may be the same base station.
  • the information exchange between the second base station and the first base station in each embodiment is information interaction between modules in the same base station.
  • the UE may transmit data in the D2D communication mode in the second cell. among them:
  • the second base station is configured to send an indication message.
  • the first base station administers the first cell
  • the second base station administers the second cell
  • the indication message is a message used by the second base station to notify the system information of the second cell to change.
  • the first base station is configured to acquire system information of the second cell that is controlled by the second base station according to the received indication message, and send the system information to the UE by using the first cell that is in the jurisdiction.
  • the indication message sent by the second base station may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • cells on different frequencies can share one PCI. Therefore, when using PCI to identify a cell, it is required to be combined with a frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • the first base station obtains system information of the second cell corresponding to the cell identifier.
  • the first base station and the second base station establish a connection, and acquire system information of the second cell corresponding to the cell identifier; and/or establish a connection between the first base station and the MME, and acquire the second cell corresponding to the cell identifier. system message.
  • Second The time when the system information of the second cell changes.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured by the first base station.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the time when the system information of the second cell in the received indication message is changed.
  • the first base station acquires the cell identifier according to the time when the system information of the second cell in the received notification message is changed. Know the system information of the corresponding second cell.
  • the first base station may acquire system information of the second cell at the time indicated by the information.
  • the time that the system information of the second cell is changed by the first base station is not included in the indication message received by the first base station, and the time for the first base station to acquire the system information of the second cell may be as follows:
  • the first base station When receiving the indication message, the first base station immediately starts acquiring system information of the second cell corresponding to the second cell identifier in the indication message.
  • the first base station determines the time for acquiring the second cell system information according to the time when the indication message is received, and acquires the system information of the second cell corresponding to the second cell identifier when the time of acquiring the system information of the second cell arrives.
  • the time may be divided into one end-to-end system information MP, each MP includes a plurality of consecutive SFs of the first cell. If the second base station sends an indication message to the first base station in the Nth MP, Then, the first base station starts to read the system broadcast of the second cell in the N+m MPs to acquire system information of the second cell.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is about to change; if the SIB19 of the second cell is about to change, the indication message includes indicating that the SIB 19 is about to change.
  • the indication message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell.
  • the information may be system information of the second cell including the changed D2D resource configuration, or may be only the changed D2D resource configuration.
  • the UE is configured to obtain system information of the second cell sent by the first base station.
  • an information notification system is provided.
  • an information notification method is provided.
  • at least one second cell, at least one A cell, at least one UE may also include at least one MME.
  • the base station to which the first cell belongs is referred to as a first base station
  • the base station to which the second cell belongs is referred to as a second base station
  • the second cell of the second base station has the same meaning as the second cell of the second base station.
  • the second base station and the first base station may be different base stations or may be the same base station.
  • the information exchange between the second base station and the first base station in each embodiment is information interaction between modules in the same base station.
  • the UE may transmit data in the D2D communication mode in the second cell.
  • the specific processing flow is as follows:
  • Step 301 The second base station sends an indication message.
  • the first base station administers the first cell
  • the second base station administers the second cell
  • the indication message is a message used by the second base station to notify the system information of the second cell to change.
  • Step 302 The first base station acquires system information of the second cell that is controlled by the second base station according to the received indication message.
  • the indication message sent by the second base station may include at least one of the following information:
  • the first type the cell identifier of the second cell under the jurisdiction of the second base station.
  • the identifier of the second cell that is controlled by the second base station may be the cell identifier of all the second cells that are controlled by the second base station, or may be the identifier of the second cell whose system information changes.
  • the second cell is a cell whose system information changes.
  • the cell identity includes at least one of the following ways:
  • the cell identifier may be an identifier of the PCI of the cell and the frequency of the cell.
  • a cell can share a PCI on different frequencies, so when using a PCI to identify a cell, it is required to be combined with a frequency identifier, thereby improving the accuracy of the cell identity.
  • the cell identity may be the ECGI of the cell.
  • the first base station obtains system information of the second cell corresponding to the cell identifier.
  • the first base station and the second base station establish a connection, and acquire system information of the second cell corresponding to the cell identifier; and/or establish a connection between the first base station and the MME, and acquire the second cell corresponding to the cell identifier. system message.
  • Second The time when the system information of the second cell changes.
  • the time when the system information of the second cell changes may be an SFN.
  • the SFN indicates a system frame of the first cell or the second cell
  • the second cell may change system information at the beginning or end of the system frame.
  • the second cell may also change system information at some predetermined time after the system frame, for example, the time when the system information of the second cell changes indicates the system frame N of the first cell, and then the second cell is in the first cell.
  • the system information is changed at the beginning or the end of the system frame N+m, where m can take 1, 2 or 3, etc., and the value is defaulted by the system or pre-configured by the first base station.
  • the UE acquires system information of the second cell that is controlled by the second base station according to the time when the system information of the second cell in the received indication message is changed.
  • the first base station acquires the second cell corresponding to the cell identifier according to the time when the system information of the second cell in the received notification message is changed. system message.
  • the first base station may acquire system information of the second cell at the time indicated by the information.
  • the indication message received by the first base station does not include the system of the second cell.
  • the time for the first base station to acquire the system information of the second cell may be as follows:
  • the first base station When receiving the indication message, the first base station immediately starts acquiring system information of the second cell corresponding to the second cell identifier in the indication message.
  • the first base station determines the time for acquiring the second cell system information according to the time when the indication message is received, and acquires the system information of the second cell corresponding to the second cell identifier when the time of acquiring the system information of the second cell arrives.
  • the time may be divided into one end-to-end system information MP, each MP includes a plurality of consecutive SFs of the first cell. If the second base station sends an indication message to the first base station in the Nth MP, Then, the first base station starts to read the system broadcast of the second cell in the N+m MPs to acquire system information of the second cell.
  • the third type the content of the system information change of the second cell.
  • the content of the system information of the second cell is about to change.
  • the content of the system information of the second cell to be changed may include at least one of the following:
  • the UE performs the receiving or transmitting resources used by the D2D in the second cell.
  • the indication message includes an indication that the D2D resource configuration is about to change. If the cell reselection configuration of the second cell is to be changed, the indication message includes indicating that the cell reselection configuration is about to change; if the SIB19 of the second cell is about to change, the indication message includes indicating that the SIB 19 is about to change.
  • the indication message may include all of the second cell system information, that is, may be the latest system information of the second cell, or may be part of the latest system information of the second cell. For example, if the D2D resource configuration in the second cell system information changes, the information may be Therefore, the system information of the second cell including the changed D2D resource configuration may be only the changed D2D resource configuration.
  • Step 303 The first base station sends system information to the UE by using the first cell under the jurisdiction.
  • Step 304 The UE obtains system information of the second cell sent by the first base station.
  • a fifth embodiment of the present invention provides a user terminal, and its structural composition is as shown in FIG. 4, including:
  • the receiving module 41 is configured to receive a notification message that is sent by the first cell by the first cell, where the notification message is used to instruct the UE to acquire system information of the second cell that is controlled by the second base station.
  • the obtaining module 42 is configured to acquire system information of the second cell that is controlled by the second base station according to the received notification message.
  • the notification message includes a cell identifier of the second cell
  • the acquiring module 42 is specifically configured to acquire, according to the received cell identifier of the second cell included in the notification message, a second base station. System information of the second cell.
  • the notification message includes a time when the system information of the second cell is changed
  • the acquiring module 42 is specifically configured to acquire, according to the time when the system information of the second cell in the received notification message is changed. System information of the second cell under the jurisdiction of the second base station.
  • the notification message includes the content of the system information of the second cell
  • the acquiring module 42 is specifically configured to determine, according to the content of the system information of the second cell in the received notification message, When the system information of the second cell needs to be re-acquired, the system information of the second cell that is controlled by the second base station is obtained.
  • the notification message includes information indicating a manner in which the UE obtains system information of the second cell
  • the acquiring module 42 is specifically configured to obtain system information of the second cell according to the received notification message. And obtaining, by the second base station, system information of the second cell, where the system information of the second cell is obtained by: reading system information of the second cell broadcast by the second cell; or receiving the System information of the second cell sent by the first cell.
  • the acquiring module 42 is specifically configured to: read, according to the received notification message, system information of the second cell that is broadcast by the second cell; or, if the UE is in an idle state, The first cell establishes a connection, and acquires system information of the second cell on the established connection.
  • the fifth embodiment of the present invention further provides a first base station, as shown in FIG. 5, including:
  • the receiving module 501 is configured to receive an indication message sent by the second base station, where the indication message is used to notify the first base station to send a notification message to the user equipment UE.
  • the receiving module 501 is specifically configured to directly receive the indication message sent by the second base station, or receive the indication message sent by the second base station that is forwarded by the mobility management entity MME.
  • the sending module 502 is configured to send, by using the first cell in the jurisdiction, a notification message to the UE, where the notification message is used to notify the UE to obtain system information of a second cell that is controlled by the second base station.
  • the indication message includes a cell identifier of the second cell
  • the sending module 502 is specifically configured to include, by the first cell that is in the jurisdiction, the notification message sent by the UE to the cell identifier of the second cell. .
  • the indication message includes a time when the system information of the second cell is changed, and the sending module 502 is specifically configured to include, by the first cell that is in the jurisdiction, the second message, The time the system information changes.
  • the indication message further includes content that is changed by the system information of the second cell
  • the sending module 502 is specifically configured to include, by the first cell that is in the jurisdiction, the notification message that is sent to the UE, The content of the system information change of the cell.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell, where the sending module 502 is specifically configured to send, by using the first cell that is in the jurisdiction, the notification message to the UE. And the information about the manner in which the UE obtains the system information of the second cell, where the UE obtains the system information of the second cell, where the UE reads the system information of the second cell broadcast by the second cell. Or receiving the system information of the second cell sent by the first cell by the UE.
  • the first base station further includes: an acquiring module, configured to acquire the device-to-device D2D a UE in a communication mode, where the sending module is configured to send the notification message to the acquired UE by using the first cell that is in the jurisdiction.
  • an acquiring module configured to acquire the device-to-device D2D a UE in a communication mode
  • the sending module is configured to send the notification message to the acquired UE by using the first cell that is in the jurisdiction.
  • the acquiring module is specifically configured to acquire, in at least one of the following manners, a UE that is in a D2D communication mode: acquire a UE in a D2D communication mode in an MME, and acquire a D2D communication mode in the second base station.
  • UE acquiring the UE in the D2D communication mode stored by the first base station.
  • the UE in the D2D communication mode acquired by the acquiring module includes at least one of the following: a UE that performs a D2D communication mode by using a resource configuration provided by the second cell; where the second cell is located. In frequency, the UE is in D2D communication mode.
  • the embodiment of the present invention further provides a second base station, as shown in FIG. 6, including:
  • the determining module 601 is configured to determine whether the user equipment UE is required to obtain system information of the second cell that is controlled by the second base station.
  • the sending module 602 is configured to: when determining that the UE is required to obtain the system information of the second cell that is controlled by the second base station, send an indication message to the first base station, where the indication message is used to notify the first base station to pass The first cell of the jurisdiction sends a notification message to the UE, where the notification message is used to notify the UE to obtain system information of the second cell that is controlled by the second base station.
  • the sending module 602 is specifically configured to directly send an indication message to the first base station, or forward the indication message to the first base station by using a mobility management entity MME.
  • the indication message includes a cell identifier of the second cell
  • the sending module 602 specifically, the indication message sent to the first base station further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell changes
  • the sending module 602 specifically, the indication message sent to the first base station further includes a time when the system information of the second cell is changed.
  • the indication message further includes content that changes system information of the second cell
  • the sending module 602 specifically, the indication message sent to the first base station further includes content that changes system information of the second cell.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell;
  • the sending module 602 specifically, the indication message sent to the first base station further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell.
  • the UE reads the system information of the second cell that is broadcast by the second cell; or the UE receives the system information of the second cell that is sent by the first cell.
  • a sixth embodiment of the present invention provides a user terminal, as shown in FIG. 7, including:
  • the memory 71 is configured to store program instructions.
  • the memory may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), such as flashing Memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); or a combination of the above types of memory.
  • volatile memory such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory
  • flashing Memory English: flash memory
  • hard disk English: hard disk drive, abbreviated: HDD
  • SSD solid state drive
  • the interface 72 is configured to receive, by the first base station, a notification message that is sent by the first cell that is controlled by the first base station, where the notification message is used to instruct the UE to acquire system information of the second cell that is controlled by the second base station;
  • the interface may be one or more of the following: a network interface controller (English: network interface controller, abbreviation: NIC), such as an Ethernet NIC, which can provide a copper wire and/or a fiber interface;
  • a network interface controller (English: network interface controller, abbreviation: NIC), such as an Ethernet NIC, which can provide a copper wire and/or a fiber interface
  • the NIC of the wireless interface such as a wireless local area network (English: wireless local area network, abbreviated as WLAN) NIC.
  • WLAN wireless local area network
  • the signal processor 73 is configured to acquire system information of the second cell that is controlled by the second base station according to the notification message received by the interface according to the program instruction stored in the memory.
  • the signal processor 73 is configured to obtain, according to the program code stored in the memory 22, a metadata index value corresponding to the updated metadata transmitted by the interface 21.
  • the signal processor can be a central processing unit (English: central processing unit, abbreviated: CPU), or a combination of a CPU and a hardware chip.
  • the signal processor can also be a network processor (English: network processor, abbreviation: NP). Either a combination of CPU and NP, or a combination of NP and hardware chips.
  • the above hardware chip may be a combination of one or more of the following: an application-specific integrated circuit (ASIC: ASIC), a field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA) , Complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD).
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • the notification message includes a cell identifier of the second cell
  • the signal processor 73 is configured to obtain the second base station according to the received cell identifier of the second cell included in the notification message. System information of the second cell.
  • the notification message includes a time when the system information of the second cell is changed, and the signal processor 73 is specifically configured to acquire according to the time when the system information of the second cell in the received notification message is changed.
  • System information of the second cell under the jurisdiction of the second base station.
  • the notification message includes content that changes system information of the second cell; the signal processor 73 is specifically configured to: according to the content of the system information of the second cell in the received notification message, When it is determined that the system information of the second cell needs to be re-acquired, the system information of the second cell that is controlled by the second base station is obtained.
  • the notification message includes information indicating a manner in which the UE obtains system information of the second cell
  • the signal processor 73 is specifically configured to obtain system information of the second cell according to the received notification message.
  • the system information of the second cell that is controlled by the second base station is obtained, where the system information of the second cell is obtained by: reading system information of the second cell broadcast by the second cell; or receiving the System information of the second cell sent by the first cell.
  • the signal processor 73 is configured to: read the system information of the second cell broadcast by the second cell according to the received notification message; or if the UE is in an idle state, The first cell establishes a connection, and acquires system information of the second cell on the established connection.
  • the implementation of the present invention also provides a first base station, whose structural composition is the same as that described in FIG. 7, and includes:
  • the memory 71 is configured to store program instructions.
  • the memory can be a volatile memory (English: volatile memory), such as random access memory Memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), such as flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation : HDD) or solid state drive (English: solid-state drive, abbreviated: SSD); or a combination of the above types of memory.
  • volatile memory such as random access memory Memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), such as flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation : HDD) or solid state drive (English: solid-state drive, abbreviated: SSD); or a combination of the above types of memory.
  • the interface 72 is configured to receive an indication message sent by the second base station, where the indication message is used to notify the first base station to send a notification message to the user equipment UE.
  • the interface may be one or more of the following: a network interface controller (English: network interface controller, abbreviation: NIC), such as an Ethernet NIC, which can provide a copper wire and/or a fiber interface;
  • a network interface controller (English: network interface controller, abbreviation: NIC), such as an Ethernet NIC, which can provide a copper wire and/or a fiber interface
  • the NIC of the wireless interface such as a wireless local area network (English: wireless local area network, abbreviated as WLAN) NIC.
  • WLAN wireless local area network
  • the signal processor 73 is configured to send, by the first cell that is subject to the jurisdiction, a notification message to the UE according to the stored program instruction, where the notification message is used to notify the UE to obtain the second base station System information of the second cell.
  • the signal processor 73 is configured to obtain, according to the program code stored in the memory 22, a metadata index value corresponding to the updated metadata transmitted by the interface 21.
  • the signal processor can be a central processing unit (English: central processing unit, abbreviated: CPU), or a combination of a CPU and a hardware chip.
  • the signal processor can also be a network processor (English: network processor, abbreviation: NP). Either a combination of CPU and NP, or a combination of NP and hardware chips.
  • the above hardware chip may be a combination of one or more of the following: an application-specific integrated circuit (ASIC: ASIC), a field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA) , Complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD).
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • the foregoing interface 72 is specifically configured to directly receive the indication message sent by the second base station, or receive the indication message sent by the second base station that is forwarded by the mobility management entity MME.
  • the indication message includes a cell identifier of the second cell; the signal processor 73,
  • the notification message sent by the first cell that is determined by the first base station to the UE further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed; the signal processor 73 is specifically configured to: in the notification message sent by the first cell that is controlled by the first base station to the UE, Contains the time when the system information of the second cell changes.
  • the indication message further includes content that is changed by the system information of the second cell, where the signal processor 73 is specifically configured to send, by using the first cell that is managed by the first base station, the notification message to the UE.
  • the content of the system information change of the second cell is also included.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell, where the signal processor 73 is specifically configured to send to the UE by using the first cell that is controlled by the first base station.
  • the notification message further includes information indicating a manner in which the UE obtains system information of the second cell, where the UE obtains system information of the second cell in a manner that the UE reads the second broadcast of the second cell System information of the cell; or the UE receives system information of the second cell sent by the first cell.
  • the signal processor 73 is further configured to acquire a UE in a device-to-device D2D communication mode, and send the notification message to the acquired UE by using a first cell that is controlled by the first base station.
  • the signal processor 73 is specifically configured to acquire, in at least one of the following manners, a UE in a D2D communication mode: acquiring a UE in a D2D communication mode in an MME; acquiring at the second base station a UE in a D2D communication mode; acquiring a UE in a D2D communication mode stored by the first base station.
  • the signal processor 73 specifically for acquiring the UE in the D2D communication mode, includes at least one of the following: a UE that performs a D2D communication mode by using a resource configuration provided by the second cell; The UE in the D2D communication mode on the frequency at which the second cell is located.
  • the present invention also provides a second base station, which has the same structural composition as that of FIG. 7, and includes: a memory 71, an interface 72, and a signal processor 73, wherein:
  • the interface can be one or more of the following: a network interface controller (English: network interface controller, abbreviation: NIC) that provides a wired interface, such as an Ethernet NIC. To provide a copper wire and/or fiber interface; a NIC that provides a wireless interface, such as a wireless local area network (WLAN) NIC.
  • a network interface controller (English: network interface controller, abbreviation: NIC) that provides a wired interface, such as an Ethernet NIC.
  • a NIC that provides a wireless interface, such as a wireless local area network (WLAN) NIC.
  • WLAN wireless local area network
  • the memory 71 is configured to store program instructions.
  • the memory may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), such as flashing Memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); or a combination of the above types of memory.
  • volatile memory such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory
  • flashing Memory English: flash memory
  • hard disk English: hard disk drive, abbreviated: HDD
  • SSD solid state drive
  • a signal processor 73 configured to determine, according to the program instructions stored in the memory, whether the user equipment UE is required to obtain system information of a second cell that is controlled by the second base station; and determining that the UE is required to obtain the second base station
  • the system information of the second cell is sent to the first base station by using the interface 72, where the indication message is used to notify the first base station to send a notification message to the UE by using the first cell under the jurisdiction, the notification message And configured to notify the UE to obtain system information of a second cell that is controlled by the second base station.
  • the signal processor can be a central processing unit (English: central processing unit, abbreviated: CPU), or a combination of a CPU and a hardware chip.
  • the signal processor can also be a network processor (English: network processor, abbreviation: NP). Either a combination of CPU and NP, or a combination of NP and hardware chips.
  • the signal processor 73 is specifically configured to directly send an indication message to the first base station, or forward the indication message to the first base station by using a mobility management entity MME.
  • the indication message includes a cell identifier of the second cell
  • the signal processor 73 specifically, the indication message sent to the first base station further includes a cell identifier of the second cell.
  • the indication message includes a time when the system information of the second cell is changed; and the signal processor 73, specifically, the indication message sent to the first base station further includes a time when the system information of the second cell is changed.
  • the indication message further includes content that is changed by the system information of the second cell
  • the signal processor 73 is configured to further include a system of the second cell in the indication message sent to the first base station. The content of the information change.
  • the indication message further includes information indicating a manner in which the UE obtains system information of the second cell
  • the signal processor 73 specifically, the indication message sent to the first base station further includes indicating that the UE obtains the second Information about the manner of the system information of the cell; wherein, the manner in which the UE obtains the system information of the second cell is: the UE reads the system information of the second cell broadcast by the second cell; or the UE receives the System information of the second cell transmitted by a cell.
  • embodiments of the present invention can be provided as a method, apparatus (device), 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, read-only optical disks, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, read-only optical disks, 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.

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Abstract

本发明公开了一种信息通知方法、用户终端、第一基站及第二基站，UE接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示UE获取第二基站管辖的第二小区的系统信息；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，第二小区的D2D资源配置发生了变化但是UE没有及时读取，则会造成UE使用已经过期的D2D资源配置的问题。

Description

一种信息通知方法、用户终端、第一基站及第二基站 技术领域
本发明涉及通信技术领域，尤其是涉及一种信息通知方法、用户终端、第一基站及第二基站。
背景技术
设备到设备(英文：Device to Device，缩写：D2D)通信模式是指用户设备(英文：User Equipment，缩写：UE)和UE之间互相发现，从而建立直接链路，并通过该建立的直接链路进行通信的模式。在该种模式下UE之间传输的信息不需要通过基站中转。
为便于阐述，将UE所在的小区称为第一小区，和第一小区相邻的小区称为第二小区。第一小区和第二小区可以是相同基站所管辖的小区，也可以是不同基站管辖的小区。在D2D通信模式中，UE在使用第一小区提供的服务的同时，UE进行D2D通信所使用的D2D资源可以是第二小区提供的。该种情况下，UE需要接收第二小区发送的系统信息，从而获知该第二小区提供的D2D资源配置，进而进行D2D。而且，通常情况下，第二小区的D2D资源配置不会一成不变，因此UE需要周期性的读取该第二小区的系统信息，以获得第二小区为UE提供的最新的D2D资源配置，从而才可以使用第二小区提供的最新的D2D资源配置进行D2D。
由上述可知，UE在使用第二小区提供的D2D资源配置进行D2D时，会周期性读取第二小区的系统信息。而通常情况下，第二小区的D2D资源配置并不是频繁发生变化，此时，若UE读取第二小区的系统信息的周期设置的较短，UE会频繁读取第二小区的系统信息，这样UE每次获取的第二小区提供的D2D资源配置都相同，则耗费了UE的电池电量，从而缩短了UE的待机时间；如果UE读取第二小区系统信息的周期设置的较长，则有可能第二小区的D2D资源配置发生了变化但是UE没有及时读取，则会造成UE使用已经 过期的D2D资源配置的问题。
发明内容
本发明提供一种信息通知方法、用户终端、第一基站及第二基站，用于解决第二小区的D2D资源配置发生了变化但是UE没有及时读取，则会造成UE使用已经过期的D2D资源配置的问题。
第一方面，提供了一种信息通知方法，包括：用户设备UE接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示UE获取第二基站管辖的第二小区的系统信息；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
结合第一方面，在第一方面的第一种可能的实现方式中，所述通知消息中包含第二小区的小区标识；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
结合第一方面，在第一方面的第二种可能的实现方式中，所述通知消息中包含第二小区的系统信息改变的时间；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
结合第一方面，在第一方面的第三种可能的实现方式中，所述通知消息中包含第二小区的系统信息变化的内容；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
结合第一方面，在第一方面的第四种可能的实现方式中，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE按 照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
结合第一方面，在第一方面的第五种可能的实现方式中，所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若所述UE处于空闲态时，则所述UE与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
第二方面，提供了一种信息通知方法，包括：第一基站接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息；所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第二方面，在第二方面的第一种可能的实现方式中，第一基站接收第二基站发送的指示消息，包括：所述第一基站直接接收第二基站发送的指示消息；或所述第一基站接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
结合第二方面或第二方面的第一种可能的实现方式中，在第二方面的第三种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
结合第二方面，在第二方面的第四种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
结合第二方面，在第二方面的第五种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
结合第二方面，在第二方面的第六种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
结合第二方面，在第二方面的第七种可能的实现方式中，所述第一基站通过管辖的第一小区向所述UE发送所述通知消息，包括：所述第一基站获取处于设备到设备D2D通信模式的UE；所述第一基站通过管辖的第一小区向获取的所述UE发送所述通知消息。
结合第二方面或第二方面的第七种可能的实现方式，在第二方面的第八种可能的实现方式中，所述第一基站至少按照下述方式中的一种获取处于D2D通信模式的UE：所述第一基站在MME中获取处于D2D通信模式的UE；所示第一基站在所述第二基站中获取处于D2D通信模式的UE；所述第一基站获取存储的处于D2D通信模式的UE。
结合第二方面至第二方面的第八种任一可能的实现方式，在第二方面的第九种可能的实现方式中，所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
第三方面，提供了一种信息通知方法，包括：第二基站确定是否需要用户设备UE获得所述第二基站管辖的第二小区的系统信息；在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，所述第二基站向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第三方面，在第三方面的第一种可能的实现方式中，所述第二基站向第一基站发送指示消息，包括：所述第二基站直接向所述第一基站发送指 示消息；或所述第二基站将所述指示消息通过移动管理实体MME转发给所述第一基站。
结合第三方面或第三方面的第一种可能的实现方式中，在第三方面的第二种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述第二基站向第一基站发送的指示消息中还包含第二小区的小区标识。
结合第三方面或第三方面的第一种可能的实现方式中，在第三方面的第三种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述第二基站向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
结合第三方面或第三方面的第一种可能的实现方式中，在第三方面的第四种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述第二基站向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
结合第三方面或第三方面的第一种可能的实现方式中，在第三方面的第五种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述第二基站向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
第四方面，提供了一种用户终端，包括：接收模块，用于接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示所述UE获取第二基站管辖的第二小区的系统信息；获取模块，用于按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
结合第四方面，在第四方面的第一种可能的实现方式中，所述通知消息中包含第二小区的小区标识；所述获取模块，具体用于按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
结合第四方面，在第四方面的第二种可能的实现方式中，所述通知消息中包含第二小区的系统信息改变的时间；所述获取模块，具体用于根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
结合第四方面，在第四方面的第三种可能的实现方式中，所述通知消息中包含第二小区的系统信息变化的内容；所述获取模块，具体用于按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
结合第四方面，在第四方面的第四种可能的实现方式中，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；所述获取模块，具体用于按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，获得第二小区的系统信息的方式为：读取所述第二小区广播的所述第二小区的系统信息；或接收所述第一小区发送的所述第二小区的系统信息。
结合第四方面，在第四方面的第五种可能的实现方式中，所述获取模块，具体用于按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若UE处于空闲态时，则与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
第五方面，提供了一种第一基站，包括：接收模块，用于接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息；发送模块，用于通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第五方面，在第五方面的第一种可能的实现方式中，所述接收模块，具体用于直接接收第二基站发送的指示消息；或接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
结合第五方面或第五方面的第一种可能的实现方式中，在第五方面的第三种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述发 送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
结合第五方面，在第五方面的第四种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
结合第五方面，在第五方面的第五种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
结合第五方面，在第五方面的第六种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
结合第五方面，在第五方面的第七种可能的实现方式中，还包括：获取模块，用于获取处于设备到设备D2D通信模式的UE；所述发送模块，具体用于通过管辖的第一小区向获取的所述UE发送所述通知消息。
结合第五方面或第五方面的第七种可能的实现方式，在第五方面的第八种可能的实现方式中，所述获取模块，具体用于至少按照下述方式中的一种获取处于D2D通信模式的UE：在MME中获取处于D2D通信模式的UE；在所述第二基站中获取处于D2D通信模式的UE；获取第一基站存储的处于D2D通信模式的UE。
结合第五方面至第五方面的第八种任一可能的实现方式，在第五方面的第九种可能的实现方式中，所述获取模块获取的所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通 信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
第六方面，提供了一种第二基站，包括：确定模块，用于确定是否需要用户设备UE获得第二基站管辖的第二小区的系统信息；发送模块，用于在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第六方面，在第六方面的第一种可能的实现方式中，所述发送模块，具体用于直接向所述第一基站发送指示消息；或将所述指示消息通过移动管理实体MME转发给所述第一基站。
结合第六方面或第六方面的第一种可能的实现方式中，在第六方面的第二种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的小区标识。
结合第六方面或第六方面的第一种可能的实现方式中，在第六方面的第三种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
结合第六方面或第六方面的第一种可能的实现方式中，在第六方面的第四种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
结合第六方面或第六方面的第一种可能的实现方式中，在第六方面的第五种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述发送模块，具体用于向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
第七方面，提供了一种用户终端，包括：存储器，用于存储程序指令；接口，用于接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示UE获取第二基站管辖的第二小区的系统信息；信号处理器，用于根据所述存储器中存储的程序指令，按照所述接口接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
结合第七方面，在第七方面的第一种可能的实现方式中，所述通知消息中包含第二小区的小区标识；所述信号处理器，具体用于按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
结合第七方面，在第七方面的第二种可能的实现方式中，所述通知消息中包含第二小区的系统信息改变的时间；所述信号处理器，具体用于根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
结合第七方面，在第七方面的第三种可能的实现方式中，所述通知消息中包含第二小区的系统信息变化的内容；所述信号处理器，具体用于按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
结合第七方面，在第七方面的第四种可能的实现方式中，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器，具体用于按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，获得第二小区的系统信息的方式为：读取所述第二小区广播的所述第二小区的系统信息；或接收所述第一小区发送的所述第二小区的系统信息。
结合第七方面，在第七方面的第五种可能的实现方式中，所述信号处理器，具体用于按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若UE处于空闲态时，则与所述第一小区建立连接，并 在建立的所述连接上获取所述第二小区的系统信息。
第八方面，提供了一种第一基站，包括：存储器，用于存储程序指令；接口，用于接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息；信号处理器，用于按照所述存储其中存储的程序指令，通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第八方面，在第八方面的第一种可能的实现方式中，所述接口，具体用于直接接收第二基站发送的指示消息；或接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
结合第八方面或第八方面的第一种可能的实现方式中，在第八方面的第三种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述信号处理器，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
结合第八方面，在第八方面的第四种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述信号处理器，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
结合第八方面，在第八方面的第五种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述信号处理器，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
结合第八方面，在第八方面的第六种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
结合第八方面，在第八方面的第七种可能的实现方式中，所述信号处理器，还用于获取处于设备到设备D2D通信模式的UE；通过第一基站管辖的第一小区向获取的所述UE发送所述通知消息。
结合第八方面或第八方面的第七种可能的实现方式，在第八方面的第八种可能的实现方式中，所述信号处理器，具体用于至少按照下述方式中的一种获取处于D2D通信模式的UE：在MME中获取处于D2D通信模式的UE；在所述第二基站中获取处于D2D通信模式的UE；获取第一基站存储的处于D2D通信模式的UE。
结合第八方面至第八方面的第八种任一可能的实现方式，在第八方面的第九种可能的实现方式中，所述信号处理器获取的所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
第九方面，提供了一种第二基站，包括：存储器，用于存储程序指令；信号处理器，用于按照所述存储器中存储的程序指令，确定是否需要用户设备UE获得第二基站管辖的第二小区的系统信息；在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
结合第九方面，在第九方面的第一种可能的实现方式中，所述信号处理器，具体用于直接向所述第一基站发送指示消息；或将所述指示消息通过移动管理实体MME转发给所述第一基站。
结合第九方面或第九方面的第一种可能的实现方式中，在第九方面的第二种可能的实现方式中，所述指示消息中包含第二小区的小区标识；所述信号处理器，具体用于向第一基站发送的指示消息中还包含第二小区的小区标识。
结合第九方面或第九方面的第一种可能的实现方式中，在第九方面的第 三种可能的实现方式中，所述指示消息中包含第二小区的系统信息改变的时间；所述信号处理器，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
结合第九方面或第九方面的第一种可能的实现方式中，在第九方面的第四种可能的实现方式中，所述指示消息中还包含第二小区的系统信息变化的内容；所述信号处理器，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
结合第九方面或第九方面的第一种可能的实现方式中，在第九方面的第五种可能的实现方式中，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器，具体用于向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
通过采用上述技术方案，第二基站向第一基站发送指示信息，第一基站根据接收到的指示信息，向UE发送通知消息，UE接收第一基站通过管辖的第一小区发送的通知消息，按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，第二基站管辖的第二小区的系统信息在发生变化时，能够通知UE获得变换的系统信息，UE不需要周期性获得第二小区的系统信息，节省了UE的电池电量，缩短了UE的待机时间，另外，第二小区的资源配置发生变化时，UE也可以及时获得变化的系统信息。
附图说明
图1为本发明提出信息通知系统结构组成示意图；
图2为本发明实施例二中，提出的信息通知方法流程图；
图3为本发明实施例四中，提出的信息通知方法流程图；
图4为本发明实施例五中，提出的信息通知装置结构组成示意图；
图5为本发明实施例五中，提出的第一基站结构组成示意图；
图6为本发明实施例五中，提出的第二基站结构组成示意图；
图7为本发明实施例中，提出的用户终端结构组成示意图。
具体实施方式
针对UE会频繁读取第二小区的系统信息，耗费了UE的电池电量，或者UE读取第二小区系统信息的周期设置的较长，则有可能第二小区的D2D资源配置发生了变化但是UE没有及时读取，则会造成UE使用已经过期的D2D资源配置的问题，本发明提供的技术方案中，第二基站向第一基站发送指示信息，第一基站根据接收到的指示信息，向UE发送通知消息，UE接收第一基站通过管辖的第一小区发送的通知消息，按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，第二基站管辖的第二小区的系统信息在发生变化时，能够通知UE获得变换的系统信息，UE不需要周期性获得第二小区的系统信息，节省了UE的电池电量，缩短了UE的待机时间，另外，第二小区的资源配置发生变化时，UE也可以及时获得变化的系统信息。
下面将结合各个附图对本发明实施例技术方案的主要实现原理、具体实施方式及其对应能够达到的有益效果进行详细地阐述。
实施例一
本发明实施例一提出一种信息通知系统，为便于阐述，将小区、基站做出第一和第二的区分。如图1所示，该系统包括至少一个第一小区、至少一个第二小区，至少一个UE。还可以包括至少一个移动管理实体(英文：Mobility Management Entity，缩写：MME)(图中未示出)。
为便于阐述，将第一小区所属的基站称为第一基站，第二小区所属的基站称为第二基站，后文中所阐述的第一基站的第一小区与第一基站管辖的第一小区具备相同含义，第二基站的第二小区与第二基站管辖的第二小区具备相同的含义。第二基站和第一基站可以是不同的基站，也可以是同一个基站。当第二基站和第一基站是同一个基站时，各实施例中第二基站和第一基站之 间的信息交互，则为同一个基站内部各模块之间的信息交互。
本发明实施例一提出的信息通知系统中，同一个频率上可以有多个第二小区，UE可以在第二小区中通过D2D通信模式传输数据。其中：
第二基站，用于发送指示消息，该指示消息用于通知第一基站向UE发送通知消息。
第二基站可以将指示消息直接发送给MME，由MME将指示消息发送给第一基站，第二基站也可以将指示消息直接发送给第一基站。
其中：第二基站发送的指示消息中可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例一提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的物理小区标识(英文：Physical Cell Identifier，缩写：PCI)和该小区所在频率的标识。
本发明实施例一提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的演进通用移动通信系统陆地无线接入网小区全局标识(英文：E-UTRAN Cell Global Identifier，缩写：ECGI)。
第二种：第二小区的系统信息改变的时间。
第二小区的系统信息改变的时间，可以是一个系统帧号(英文：System Frame Number，缩写：SFN)。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第 一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19(英文：System Information Block 19，缩写SIB19)将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
指示消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE直接读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
具体地，该指示消息可以包括一个小区的列表，并且指示所有包含在这 个列表中的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取；或者，该指示消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；再或者，该指示消息可以包括一个公共陆地移动网络(英文：Public Land Mobile Network，缩写：PLMN)的列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取。
第一基站，用于接收第二基站发送的指示消息，并通过管辖的第一小区向UE发送通知消息。
根据第二基站发送的指示消息的接收对象不同，第一基站可以直接接收第二基站发送的指示消息，也可以从MME处获得第二基站发送的指示消息。
其中，第一基站在获得的指示消息中可以获得下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例一提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例一提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
第二种：第二小区的系统信息的改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时 刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19(英文：System Information Block 19，缩写SIB19)将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
指示消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
具体地，该指示消息可以包括一个小区的列表，并且指示所有包含在这个列表中的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；或者，该指示消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；再或者，该指示消息可以包括一个PLMN列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取。
由上述可知，根据第一基站接收到的指示消息中所包括的信息，第一基站向UE发送的通知消息中，可以包括在指示消息中获得的信息，如第二基站所管辖的第二小区的小区标识、第二小区的系统信息改变的时间、第二小区的系统信息变化的内容、第二小区系统信息的全部或者部分，以及指示UE获取第二小区系统信息的方式的信息等等，具体请参见上文中的详细阐述，不再赘述。
其中，本发明实施例上述提出的技术方案中，第一基站在没有收到第二基站发送的指示消息时，也可以向UE发送通知消息，此时该通知消息中的信息是第一基站自己生成的，而不是第二基站通过指示消息发送给第一基站的。例如，第二基站没有发送指示消息给第一基站，第一基站自身确定UE需要获得第二基站的第二小区的系统信息，并且确定了UE获得该系统信息的方式，则第一基站可以向UE发送通知消息，该消息中包含了第一基站自身确定的UE获得第二基站的第二小区的系统信息的方式。
第一基站在接收到第二基站发送的指示消息后，也可以将该指示消息中携带的某些信息做适当的转换，然后将转换后得到的新信息放在通知消息中发送给UE。例如，第一基站收到第二基站发送的指示消息，该指示消息中包含第二小区系统信息改变的时间，但是该时间是一个第二小区的SFN，第一基站可以把该第二小区的SFN转换成一个第一小区的SFN，然后将转换得到的第一小区的SFN作为第二小区系统信息改变的时间放在通知消息中发送给 UE。
第一基站向UE发送通知消息，可以是向第一小区中的全部UE发送通知消息，也可以是向第一小区中处于D2D通信模式的UE发送通知消息。
若第一基站是向第一小区中处于D2D通信模式的UE发送通知消息，则第一基站需要获知哪些UE处于D2D通信模式。
其中，处于D2D通信模式的UE至少包括下述中的一种：
A：在第二小区上处于D2D模式的UE。
该种方式中，在第二小区上处于D2D模式的UE是指使用第二小区提供的资源配置进行D2D通信模式的UE。
B：在第二小区所在的频率上处于D2D模式的UE。
其中，第一基站按照下述方式中的至少一种获知哪些UE处于D2D通信模式：
第一种方式：第一基站从MME处获知。
该种方式中，第一基站在MME中获取处于D2D通信模式的UE。
第二种方式：第一基站在第二基站中获取处于D2D通信模式的UE。
第三种方式：第一基站获取存储的处于D2D通信模式的UE。
该种方式中，第一基站将哪些UE处于D2D通信模式这一信息预先存储起来。
上述三种方式中，UE在使用D2D通信模式传输数据之前，需要在MME、第二基站或者第一基站处进行鉴权，只有当MME、第二基站或第一基站鉴权通过后，UE才能执行D2D通信模式传输数据。因此在第二基站、MME或者第一基站三者中的一个或全部，会存储有哪些UE处于D2D通信模式这一信息。
UE，用于接收第一基站通过管辖的第一小区发送的通知消息，UE按照接收到的通知消息获取第二基站管辖的第二小区的系统信息。
UE接收到的通知消息，用于指示UE获取第二基站管辖的第二小区的系统信息。
其中，UE接收到的通知消息中，可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例一提出的技术方案中，若通知消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例一提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
该种方式下，UE按照接收到的通知消息，获取第二基站管辖的第二小区的系统信息，其中第二小区是与通知消息中的小区标识对应的第二小区。
第二种：第二小区的系统信息的改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
该种方式中，UE按照接收到的通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
其中，一种较佳的实施方式，若通知消息中还包括小区标识，则UE按照接收到的通知消息中的第二小区的系统信息改变的时间，获取小区标识对应的第二小区的系统信息。例如UE可以在该信息所指示的时刻获取该第二小区 的系统信息。
其中，该种方式中，若UE接收到的第一基站发送的通知消息中不包含第二小区的系统信息改变的时间，则UE获取第二小区的系统信息的时间可以有如下两种方式：
1)在接收到通知消息时，获取第二小区标识对应的第二小区的系统信息。
UE接收到第一基站发送的通知消息时，立即开始获取通知消息中的第二小区标识对应的第二小区的系统信息。
2)UE根据接收到通知消息的时间，确定获取第二小区系统信息的时间，在获取第二小区的系统信息的时间到达时，获取第二小区标识对应的第二小区的系统信息。
例如，可以预先将时间划分为一个个首尾相接的系统信息修改周期(英文：Modification Period，缩写：MP)，每一个MP包含数个连续的第一小区的系统帧(英文：System Frame，缩写：SF)。若第一基站在第N个MP内向UE发送了通知消息，则UE在第N+m个MP内开始读取第二小区的系统广播以获取第二小区的系统信息，或者UE在第N+m个MP内开始向第一基站发起连接请求以在建立的连接上接收第一基站发送的第二小区的系统信息，其中m的取值可以为1，2，3等等，m的取值可以是默认的，或者是第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中哪些内容将要发生变化，UE按照接收到的通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的第二小区的系统信息。
该种方式中，通知消息中包含第二小区的系统信息中的哪些内容将要发生变化的信息，UE可以据此确定是否需要重新获取第二小区的系统信息。UE根据通知消息指示的第二小区的系统信息中哪些内容将要发生变化这一信息，确定是否需要重新获取第二小区的系统信息，并在确定需要重新获取第二小区的系统信息后获取第二小区标识对应的第二小区的系统信息。
其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则通知消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则通知消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19(英文：System Information Block 19，缩写SIB19)将要发生改变，则通知消息中包含指示SIB19将要发生改变。
例如，当通知消息中包含该第二小区的系统信息中D2D资源配置将要改变这一信息时，正在使用该第二小区的D2D资源配置的UE需要重新获取该第二小区的系统信息，而其它UE则可以不获取该第二小区的系统信息。
再例如，当通知消息中包含该第二小区的系统信息中SIB19要改变这一信息时，正在使用该第二小区的SIB19的UE需要重新获取该第二小区的系统信息，而其它UE则可以不获取该第二小区的系统信息。
第四种：第二小区系统信息的全部或者部分。
该种方式中，通知消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
通知消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。UE按照接收到的通知消息中的获得第二小区的系统信息的方式，获取第二基站管辖的第二 小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
该通知消息可以包括一个小区的列表，并且指示所有包含在这个列表中的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；或者，该通知消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取；再或者，该通知消息可以包括一个PLMN的列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取。
当该通知消息中包含了第二小区的系统信息的全部或者部分时，UE直接从该通知消息中获取该第二小区的系统信息。当该通知消息中不包含第二小区的系统信息的全部或者部分时，UE根据该第五种信息选择上述两种方式之一获取该第二小区的系统信息。若该第五种信息指示了UE使用第一种方式获取第二小区的系统信息，则UE读取第二小区的系统广播以获取第二小区的系统信息。
其中，UE可以按照接收到的通知消息，通过第一基站获得第二小区广播的第二小区的系统信息，或者UE按照接收到的通知消息读取第二小区广播的第二小区的系统信息。
若UE处于空闲态时，则UE与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
若第五种信息指示了UE使用第二种方式获取第二小区的系统信息：当UE和第一基站有连接时，UE在该连接上接收第一基站发送的第二小区的系统信息；当UE和第一基站没有连接时或者UE处于空闲态时，则UE向第一基站发起连接请求从而与第一基站建立连接并在建立的连接上接收第一基站发送的第二小区的系统信息。
实施例二
基于图1所示的系统架构，本发明实施例二提出一种信息通知方法，为便于阐述，将小区、基站做出第一和第二的区分。将第一小区所属的基站称为第一基站，第二小区所属的基站称为第二基站，后文中所阐述的第一基站的第一小区与第一基站管辖的第一小区具备相同含义，第二基站的第二小区与第二基站管辖的第二小区具备相同的含义。第二基站和第一基站可以是不同的基站，也可以是同一个基站。当第二基站和第一基站是同一个基站时，各实施例中第二基站和第一基站之间的信息交互，则为同一个基站内部各模块之间的信息交互。
本发明实施例二提出的信息通知方法中，同一个频率上可以有多个第二小区，UE可以在第二小区中通过D2D通信模式传输数据。如图2所示，其具体处理流程下述：
步骤201，第二基站确定是否需要UE获得第二基站管辖的第二小区的系统信息，如果判断结果为是，执行不受201，反之结束处理。
步骤202，在确定出需要UE获得所述第二基站管辖的第二小区的系统信息时，第二基站向第一基站发送指示消息。
其中，指示消息用于通知第一基站通过管辖的第一小区向UE发送通知消息，通知消息用于通知UE获得所述第二基站管辖的第二小区的系统信息。
第二基站可以将指示消息直接发送给MME，由MME将指示消息发送给第一基站，第二基站也可以将指示消息直接发送给第一基站。
其中：第二基站发送的指示消息中可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例二提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例二提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI)
第二种：第二小区的系统信息改变的时间。
第二小区的系统信息改变的时间，可以是一个系统帧号(英文：System Frame Number，缩写：SFN)。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19(英文：System Information Block 19，缩写SIB19)将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是 第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
指示消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE直接读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
具体地，该指示消息可以包括一个小区的列表，并且指示所有包含在这个列表中的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取；或者，该指示消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；再或者，该指示消息可以包括一个公共陆地移动网络(英文：Public Land Mobile Network，缩写：PLMN)的列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取。
步骤203，第一基站接收第二基站发送的指示消息。
其中，指示消息用于通知所述第一基站向UE发送通知消息，第一基站通过管辖的第一小区向UE发送通知消息，通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
根据第二基站发送的指示消息的接收对象不同，第一基站可以直接接收第二基站发送的指示消息，也可以从MME处获得第二基站发送的指示消息。
其中，第一基站在获得的指示消息中可以获得下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二 小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例二提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例二提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
第二种：第二小区的系统信息的改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19 (英文：System Information Block 19，缩写SIB19)将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
指示消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
具体地，该指示消息可以包括一个小区的列表，并且指示所有包含在这个列表中的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；或者，该指示消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；再或者，该指示消息可以包括一个PLMN列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取。
由上述可知，根据第一基站接收到的指示消息中所包括的信息，第一基站向UE发送的通知消息中，可以包括在指示消息中获得的信息，如第二基站所管辖的第二小区的小区标识、第二小区的系统信息改变的时间、第二小区的系统信息变化的内容、第二小区系统信息的全部或者部分，以及指示UE获取第二小区系统信息的方式的信息等等，具体请参见上文中的详细阐述，不再赘述。
其中，本发明实施例上述提出的技术方案中，第一基站在没有收到第二基站发送的指示消息时，也可以向UE发送通知消息，此时该通知消息中的信息是第一基站自己生成的，而不是第二基站通过指示消息发送给第一基站的。例如，第二基站没有发送指示消息给第一基站，第一基站自身确定UE需要获得第二基站的第二小区的系统信息，并且确定了UE获得该系统信息的方式，则第一基站可以向UE发送通知消息，该消息中包含了第一基站自身确定的UE获得第二基站的第二小区的系统信息的方式。
第一基站在接收到第二基站发送的指示消息后，也可以将该指示消息中携带的某些信息做适当的转换，然后将转换后得到的新信息放在通知消息中发送给UE。例如，第一基站收到第二基站发送的指示消息，该指示消息中包含第二小区系统信息改变的时间，但是该时间是一个第二小区的SFN，第一基站可以把该第二小区的SFN转换成一个第一小区的SFN，然后将转换得到的第一小区的SFN作为第二小区系统信息改变的时间放在通知消息中发送给UE。
步骤204，第一基站向UE发送通知消息。
可以是向第一小区中的全部UE发送通知消息，也可以是向第一小区中处于D2D通信模式的UE发送通知消息。
若第一基站是向第一小区中处于D2D通信模式的UE发送通知消息，则第一基站需要获知哪些UE处于D2D通信模式。
其中，处于D2D通信模式的UE至少包括下述中的一种：
A：在第二小区上处于D2D模式的UE。
该种方式中，在第二小区上处于D2D模式的UE是指使用第二小区提供的资源配置进行D2D通信模式的UE。
B：在第二小区所在的频率上处于D2D模式的UE。
其中，第一基站按照下述方式中的至少一种获知哪些UE处于D2D通信模式：
第一种方式：第一基站从MME处获知。
该种方式中，第一基站在MME中获取处于D2D通信模式的UE。
第二种方式：第一基站在第二基站中获取处于D2D通信模式的UE。
第三种方式：第一基站获取存储的处于D2D通信模式的UE。
该种方式中，第一基站将哪些UE处于D2D通信模式这一信息预先存储起来。
上述三种方式中，UE在使用D2D通信模式传输数据之前，需要在MME、第二基站或者第一基站处进行鉴权，只有当MME、第二基站或第一基站鉴权通过后，UE才能执行D2D通信模式传输数据。因此在第二基站、MME或者第一基站三者中的一个或全部，会存储有哪些UE处于D2D通信模式这一信息。
步骤205，接收第一基站通过管辖的第一小区发送的通知消息。
步骤206，UE按照接收到的通知消息获取第二基站管辖的第二小区的系统信息。
UE接收到的通知消息，用于指示UE获取第二基站管辖的第二小区的系统信息。
其中，UE接收到的通知消息中，可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例二提出的技术方案中，若通知消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例二提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
该种方式下，UE按照接收到的通知消息，获取第二基站管辖的第二小区的系统信息，其中第二小区是与通知消息中的小区标识对应的第二小区。
第二种：第二小区的系统信息的改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置给UE的。
该种方式中，UE按照接收到的通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
其中，一种较佳的实施方式，若通知消息中还包括小区标识，则UE按照接收到的通知消息中的第二小区的系统信息改变的时间，获取小区标识对应的第二小区的系统信息。例如UE可以在该信息所指示的时刻获取该第二小区的系统信息。
其中，该种方式中，若UE接收到的第一基站发送的通知消息中不包含第二小区的系统信息改变的时间，则UE获取第二小区的系统信息的时间可以有如下两种方式：
1)在接收到通知消息时，获取第二小区标识对应的第二小区的系统信息。
UE接收到第一基站发送的通知消息时，立即开始获取通知消息中的第二小区标识对应的第二小区的系统信息。
2)UE根据接收到通知消息的时间，确定获取第二小区系统信息的时间，在获取第二小区的系统信息的时间到达时，获取第二小区标识对应的第二小区的系统信息。
例如，可以预先将时间划分为一个个首尾相接的系统信息修改周期(英文：Modification Period，缩写：MP)，每一个MP包含数个连续的第一小区 的系统帧(英文：System Frame，缩写：SF)。若第一基站在第N个MP内向UE发送了通知消息，则UE在第N+m个MP内开始读取第二小区的系统广播以获取第二小区的系统信息，或者UE在第N+m个MP内开始向第一基站发起连接请求以在建立的连接上接收第一基站发送的第二小区的系统信息，其中m的取值可以为1，2，3等等，m的取值可以是默认的，或者是第一基站预先配置给UE的。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中哪些内容将要发生变化，UE按照接收到的通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的第二小区的系统信息。
该种方式中，通知消息中包含第二小区的系统信息中的哪些内容将要发生变化的信息，UE可以据此确定是否需要重新获取第二小区的系统信息。UE根据通知消息指示的第二小区的系统信息中哪些内容将要发生变化这一信息，确定是否需要重新获取第二小区的系统信息，并在确定需要重新获取第二小区的系统信息后获取第二小区标识对应的第二小区的系统信息。
其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块(英文：Block)
例如若第二小区的D2D资源配置将要发生改变，则通知消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则通知消息包含指示小区重选配置将要发生改变；若第二小区的系统信息块19(英文：System Information Block 19，缩写SIB19)将要发生改变，则通知消息中包含指示SIB19将要发生改变。
例如，当通知消息中包含该第二小区的系统信息中D2D资源配置将要改 变这一信息时，正在使用该第二小区的D2D资源配置的UE需要重新获取该第二小区的系统信息，而其它UE则可以不获取该第二小区的系统信息。
再例如，当通知消息中包含该第二小区的系统信息中SIB19要改变这一信息时，正在使用该第二小区的SIB19的UE需要重新获取该第二小区的系统信息，而其它UE则可以不获取该第二小区的系统信息。
第四种：第二小区系统信息的全部或者部分。
该种方式中，通知消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
第五种：UE获取第二小区系统信息的方式。
通知消息中还可以包括指示UE获取第二小区系统信息的方式的信息。该信息指示了UE应该采取何种方式获取第二小区的系统信息。UE按照接收到的通知消息中的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息。
其中，UE获取第二小区系统信息的方式主要有两种：
A：UE读取该第二小区的的系统广播以获取其系统信息。
B：UE接收第一基站发送的第二小区的系统信息。
该通知消息可以包括一个小区的列表，并且指示所有包含在这个列表中的小区的系统信息UE需要采取上述方式A或者方式B中的一种获取；或者，该通知消息可以包括一个频率的列表，并且指示所有包含在这个列表中的频率上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取；再或者，该通知消息可以包括一个PLMN的列表，并且指示所有包含在这个列表中的PLMN上的小区的系统信息，UE需要采取上述方式A或者方式B中的一种获取。
当该通知消息中包含了第二小区的系统信息的全部或者部分时，UE直接 从该通知消息中获取该第二小区的系统信息。当该通知消息中不包含第二小区的系统信息的全部或者部分时，UE根据该第五种信息选择上述两种方式之一获取该第二小区的系统信息。若该第五种信息指示了UE使用第一种方式获取第二小区的系统信息，则UE读取第二小区的系统广播以获取第二小区的系统信息。
若该第五种信息指示了UE使用第二种方式获取第二小区的系统信息：当UE和第一基站有连接时，UE在该连接上接收第一基站发送的第二小区的系统信息；当UE和第一基站没有连接时，则UE向第一基站发起连接请求从而与第一基站建立连接并在建立的连接上接收第一基站发送的第二小区的系统信息。
实施例三
本发明实施例三提出一种信息通知系统，其系统架构请参见如图1所示，该系统包括至少一个第二小区、至少一个第一小区，至少一个UE，还可以包括至少一个MME。为便于阐述，将第一小区所属的基站称为第一基站，第二小区所属的基站称为第二基站，后文中所阐述的第一基站的第一小区与第一基站管辖的第一小区具备相同含义，第二基站的第二小区与第二基站管辖的第二小区具备相同的含义。第二基站和第一基站可以是不同的基站，也可以是同一个基站。当第二基站和第一基站是同一个基站时，各实施例中第二基站和第一基站之间的信息交互，则为同一个基站内部各模块之间的信息交互。
本发明实施例三提出的信息通知系统中，同一个频率上可以有多个第二小区，UE可以在第二小区中通过D2D通信模式传输数据。其中：
第二基站，用于发送指示消息。
其中第一基站管辖第一小区，第二基站管辖第二小区，指示消息是第二基站用于通知所述第二小区的系统信息变化的消息。
第一基站，用于按照接收到指示消息，获取第二基站管辖的第二小区的系统信息，并通过管辖的第一小区向UE发送所述系统信息。
其中：第二基站发送的指示消息中可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例二提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例三提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
该种方式中，第一基站获得小区标识对应的第二小区的系统信息。
一种较佳的实现方式，第一基站和第二基站建立连接，获取小区标识对应的第二小区的系统信息；和/或第一基站和MME建立连接，获取小区标识对应的第二小区的系统信息。
第二种：第二小区的系统信息改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置的。
该种方式中，UE按照接收到的指示消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
其中，一种较佳的实施方式，若指示消息中还包括小区标识，则第一基站按照接收到的通知消息中的第二小区的系统信息改变的时间，获取小区标 识对应的第二小区的系统信息。例如第一基站可以在该信息所指示的时刻获取该第二小区的系统信息。
其中，该种方式中，第一基站接收到的指示消息中不包含第二小区的系统信息改变的时间，则第一基站获取第二小区的系统信息的时间可以有如下两种方式：
1)在接收到通知消息时，获取第二小区标识对应的第二小区的系统信息。
第一基站接收到指示消息时，立即开始获取指示消息中的第二小区标识对应的第二小区的系统信息。
2)第一基站根据接收到指示消息的时间，确定获取第二小区系统信息的时间，在获取第二小区的系统信息的时间到达时，获取第二小区标识对应的第二小区的系统信息。
例如，可以预先将时间划分为一个个首尾相接的系统信息MP，每一个MP包含数个连续的第一小区的SF)若第二基站在第N个MP内向第一基站发送了指示消息，则第一基站在第N+m个MP内开始读取第二小区的系统广播以获取第二小区的系统信息。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块Block。
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的SIB19将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
UE，用于获得第一基站发送的第二小区的系统信息。
实施例四
在上述实施例三提出一种信息通知系统的基础之上，本发明实施例四提出一种信息通知方法，在本发明实施例四提出的技术方案中，包括至少一个第二小区、至少一个第一小区，至少一个UE，还可以包括至少一个MME。为便于阐述，将第一小区所属的基站称为第一基站，第二小区所属的基站称为第二基站，后文中所阐述的第一基站的第一小区与第一基站管辖的第一小区具备相同含义，第二基站的第二小区与第二基站管辖的第二小区具备相同的含义。第二基站和第一基站可以是不同的基站，也可以是同一个基站。当第二基站和第一基站是同一个基站时，各实施例中第二基站和第一基站之间的信息交互，则为同一个基站内部各模块之间的信息交互。
同一个频率上可以有多个第二小区，UE可以在第二小区中通过D2D通信模式传输数据。如图3所示，其具体处理流程如下述：
步骤301，第二基站发送指示消息。
其中第一基站管辖第一小区，第二基站管辖第二小区，指示消息是第二基站用于通知所述第二小区的系统信息变化的消息。
步骤302，第一基站按照接收到指示消息，获取第二基站管辖的第二小区的系统信息。
其中：第二基站发送的指示消息中可以包含下述信息中的至少一种：
第一种：第二基站所管辖的第二小区的小区标识。
第二基站所管辖的第二小区的标识，可以是第二基站所管辖的全部第二小区的小区标识，也可以是系统信息变化的第二小区的标识。
一种较佳地实施方式，本发明实施例四提出的技术方案中，若指示消息中包含第二小区的小区标识，则该第二小区是系统信息变化的小区。
该小区标识至少包括下述方式中的一种：
A：小区标识可以是该小区的PCI和该小区所在频率的标识。
本发明实施例四提出的技术方案中，不同频率上小区可以共享一个PCI，因此当使用PCI来标识小区时需要和频率标识相结合，从而提高小区标识的准确性。
B：小区标识可以是该小区的ECGI。
该种方式中，第一基站获得小区标识对应的第二小区的系统信息。
一种较佳的实现方式，第一基站和第二基站建立连接，获取小区标识对应的第二小区的系统信息；和/或第一基站和MME建立连接，获取小区标识对应的第二小区的系统信息。
第二种：第二小区的系统信息改变的时间。
第二小区的系统信息改变的时间，可以是一个SFN。该SFN指示了第一小区或者第二小区的一个系统帧，第二小区可以在这个系统帧的开始或者结束时刻改变系统信息。或者第二小区也可以在这个系统帧之后的某个预定时刻改变系统信息，例如该第二小区的系统信息改变的时间指示了第一小区的系统帧N，则第二小区在第一小区的系统帧N+m的开始或者结束时刻改变系统信息，其中m可以取1，2或者3等等，其取值是系统默认的，或者是通过第一基站预先配置的。
该种方式中，UE按照接收到的指示消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
其中，一种较佳的实施方式，若指示消息中还包括小区标识，则第一基站按照接收到的通知消息中的第二小区的系统信息改变的时间，获取小区标识对应的第二小区的系统信息。例如第一基站可以在该信息所指示的时刻获取该第二小区的系统信息。
其中，该种方式中，第一基站接收到的指示消息中不包含第二小区的系 统信息改变的时间，则第一基站获取第二小区的系统信息的时间可以有如下两种方式：
1)在接收到通知消息时，获取第二小区标识对应的第二小区的系统信息。
第一基站接收到指示消息时，立即开始获取指示消息中的第二小区标识对应的第二小区的系统信息。
2)第一基站根据接收到指示消息的时间，确定获取第二小区系统信息的时间，在获取第二小区的系统信息的时间到达时，获取第二小区标识对应的第二小区的系统信息。
例如，可以预先将时间划分为一个个首尾相接的系统信息MP，每一个MP包含数个连续的第一小区的SF)若第二基站在第N个MP内向第一基站发送了指示消息，则第一基站在第N+m个MP内开始读取第二小区的系统广播以获取第二小区的系统信息。
第三种：第二小区的系统信息变化的内容。
该种方式，可以是第二小区的系统信息中那些内容将要发生变化。其中，将要发生改变的第二小区的系统信息的内容可以包括下述中的至少一种：
A：D2D资源配置。
即UE在第二小区进行D2D所使用的接收或者发送资源。
B：小区重选配置。
C：系统信息的某一块Block。
例如若第二小区的D2D资源配置将要发生改变，则指示消息中包含指示D2D资源配置将要发生改变。若第二小区的小区重选配置将要发生改变，则指示消息包含指示小区重选配置将要发生改变；若第二小区的SIB19将要发生改变，则指示消息中包含指示SIB19将要发生改变。
第四种：第二小区系统信息的全部或者部分。
该种方式中，指示消息中可以包含第二小区系统信息的全部，即可以是第二小区的最新的系统信息，也可以是第二小区的最新的系统信息中的一部分。例如，若第二小区系统信息中的D2D资源配置发生了改变，则该信息可 以是包含了改变后的D2D资源配置的第二小区的系统信息，也可以只是改变后的D2D资源配置。
步骤303，第一基站通过管辖的第一小区向UE发送系统信息。
步骤304，UE获得第一基站发送的第二小区的系统信息。
实施例五
相应地，本发明实施例五提出一种用户终端，其结构组成如图4所示，包括：
接收模块41，用于接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示所述UE获取第二基站管辖的第二小区的系统信息。
获取模块42，用于按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
具体地，所述通知消息中包含第二小区的小区标识；所述获取模块42，具体用于按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
具体地，所述通知消息中包含第二小区的系统信息改变的时间；所述获取模块42，具体用于根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
具体地，所述通知消息中包含第二小区的系统信息变化的内容；所述获取模块42，具体用于按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
具体地，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；所述获取模块42，具体用于按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，获得第二小区的系统信息的方式为：读取所述第二小区广播的所述第二小区的系统信息；或接收所述第一小区发送的所述第二小区的系统信息。
具体地，所述获取模块42，具体用于按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若UE处于空闲态时，则与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
相应地，本发明实施例五还提出一种第一基站，如图5所示，包括：
接收模块501，用于接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息。
具体地，上述接收模块501，具体用于直接接收第二基站发送的指示消息；或接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
发送模块502，用于通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
具体地，所述指示消息中包含第二小区的小区标识；所述发送模块502，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
具体地，所述指示消息中包含第二小区的系统信息改变的时间；所述发送模块502，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
具体地，所述指示消息中还包含第二小区的系统信息变化的内容；所述发送模块502，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
具体地，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述发送模块502，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
可选地，第一基站，还包括：获取模块，用于获取处于设备到设备D2D 通信模式的UE；所述发送模块，具体用于通过管辖的第一小区向获取的所述UE发送所述通知消息。
具体地，上述获取模块，具体用于至少按照下述方式中的一种获取处于D2D通信模式的UE：在MME中获取处于D2D通信模式的UE；在所述第二基站中获取处于D2D通信模式的UE；获取第一基站存储的处于D2D通信模式的UE。
具体地，上述获取模块获取的所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
相应地，本发明实施例还提出一种第二基站，如图6所示，包括：
确定模块601，用于确定是否需要用户设备UE获得第二基站管辖的第二小区的系统信息。
发送模块602，用于在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
具体地，上述发送模块602，具体用于直接向所述第一基站发送指示消息；或将所述指示消息通过移动管理实体MME转发给所述第一基站。
所述指示消息中包含第二小区的小区标识；
具体地，上述发送模块602，具体用于向第一基站发送的指示消息中还包含第二小区的小区标识。
所述指示消息中包含第二小区的系统信息改变的时间；
具体地，上述发送模块602，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
所述指示消息中还包含第二小区的系统信息变化的内容；
具体地，上述发送模块602，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
具体地，上述发送模块602，具体用于向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
实施例六
本发明实施例六提出一种用户终端，如图7所示，包括：
存储器71，用于存储程序指令。
存储器可以是易失性存储器(英文：volatile memory)，例如随机存取存储器(英文：random-access memory，缩写：RAM)；或者非易失性存储器(英文：non-volatile memory)，例如快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)；或者上述种类的存储器的组合。
接口72，用于接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示UE获取第二基站管辖的第二小区的系统信息；
接口可以为以下一种或多种：提供有线接口的网络接口控制器(英文：network interface controller，缩写：NIC)，例如以太网NIC，该以太网NIC可以提供铜线和/或光纤接口；提供无线接口的NIC，例如无线局域网(英文：wireless local area network，缩写：WLAN)NIC。
信号处理器73，用于根据所述存储器中存储的程序指令，按照所述接口接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
信号处理器73，用于按照存储器22中存储的程序代码，获取接口21传输的更新的元数据对应的元数据索引值。
信号处理器可以是中央处理器(英文：central processing unit，缩写：CPU)，或者是CPU和硬件芯片的组合。信号处理器还可以是网络处理器(英文：network processor，缩写：NP)。或者是CPU和NP的组合，或者是NP和硬件芯片的组合。
上述硬件芯片可以是以下一种或多种的组合：专用集成电路(英文：application-specific integrated circuit，缩写：ASIC)，现场可编程逻辑门阵列(英文：field-programmable gate array，缩写：FPGA)，复杂可编程逻辑器件(英文：complex programmable logic device，缩写：CPLD)。
具体地，所述通知消息中包含第二小区的小区标识；所述信号处理器73，具体用于按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
具体地，所述通知消息中包含第二小区的系统信息改变的时间；所述信号处理器73，具体用于根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
具体地，所述通知消息中包含第二小区的系统信息变化的内容；所述信号处理器73，具体用于按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
具体地，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器73，具体用于按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，获得第二小区的系统信息的方式为：读取所述第二小区广播的所述第二小区的系统信息；或接收所述第一小区发送的所述第二小区的系统信息。
具体地，所述信号处理器73，具体用于按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若UE处于空闲态时，则与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
相应地，本发明实施还提出一种第一基站，其结构组成如图7所述的结构相同，包括：
存储器71，用于存储程序指令。
存储器可以是易失性存储器(英文：volatile memory)，例如随机存取存 储器(英文：random-access memory，缩写：RAM)；或者非易失性存储器(英文：non-volatile memory)，例如快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)；或者上述种类的存储器的组合。
接口72，用于接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息。
接口可以为以下一种或多种：提供有线接口的网络接口控制器(英文：network interface controller，缩写：NIC)，例如以太网NIC，该以太网NIC可以提供铜线和/或光纤接口；提供无线接口的NIC，例如无线局域网(英文：wireless local area network，缩写：WLAN)NIC。
信号处理器73，用于按照所述存储其中存储的程序指令，通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
信号处理器73，用于按照存储器22中存储的程序代码，获取接口21传输的更新的元数据对应的元数据索引值。
信号处理器可以是中央处理器(英文：central processing unit，缩写：CPU)，或者是CPU和硬件芯片的组合。信号处理器还可以是网络处理器(英文：network processor，缩写：NP)。或者是CPU和NP的组合，或者是NP和硬件芯片的组合。
上述硬件芯片可以是以下一种或多种的组合：专用集成电路(英文：application-specific integrated circuit，缩写：ASIC)，现场可编程逻辑门阵列(英文：field-programmable gate array，缩写：FPGA)，复杂可编程逻辑器件(英文：complex programmable logic device，缩写：CPLD)。
具体地，上述接口72，具体用于直接接收第二基站发送的指示消息；或接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
具体地，所述指示消息中包含第二小区的小区标识；所述信号处理器73， 具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
具体地，所述指示消息中包含第二小区的系统信息改变的时间；所述信号处理器73，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
具体地，所述指示消息中还包含第二小区的系统信息变化的内容；所述信号处理器73，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
具体地，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器73，具体用于通过第一基站管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
具体地，所述信号处理器73，还用于获取处于设备到设备D2D通信模式的UE；通过第一基站管辖的第一小区向获取的所述UE发送所述通知消息。
具体地，所述信号处理器73，具体用于至少按照下述方式中的一种获取处于D2D通信模式的UE：在MME中获取处于D2D通信模式的UE；在所述第二基站中获取处于D2D通信模式的UE；获取第一基站存储的处于D2D通信模式的UE。
具体地，所述信号处理器73，具体用于获取的所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
本发明实施还提出一种第二基站，其结构组成与图7相同，包括：存储器71、接口72以及信号处理器73，其中：
接口可以为以下一种或多种：提供有线接口的网络接口控制器(英文：network interface controller，缩写：NIC)，例如以太网NIC，该以太网NIC可 以提供铜线和/或光纤接口；提供无线接口的NIC，例如无线局域网(英文：wireless local area network，缩写：WLAN)NIC。
存储器71，用于存储程序指令。
存储器可以是易失性存储器(英文：volatile memory)，例如随机存取存储器(英文：random-access memory，缩写：RAM)；或者非易失性存储器(英文：non-volatile memory)，例如快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)；或者上述种类的存储器的组合。
信号处理器73，用于按照所述存储器中存储的程序指令，确定是否需要用户设备UE获得第二基站管辖的第二小区的系统信息；在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，通过接口72向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
信号处理器可以是中央处理器(英文：central processing unit，缩写：CPU)，或者是CPU和硬件芯片的组合。信号处理器还可以是网络处理器(英文：network processor，缩写：NP)。或者是CPU和NP的组合，或者是NP和硬件芯片的组合。
具体地，上述信号处理器73，具体用于直接向所述第一基站发送指示消息；或将所述指示消息通过移动管理实体MME转发给所述第一基站。
具体地，所述指示消息中包含第二小区的小区标识；所述信号处理器73，具体用于向第一基站发送的指示消息中还包含第二小区的小区标识。
具体地，所述指示消息中包含第二小区的系统信息改变的时间；所述信号处理器73，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
具体地，所述指示消息中还包含第二小区的系统信息变化的内容；所述信号处理器73，具体用于向第一基站发送的指示消息中还包含第二小区的系 统信息变化的内容。
具体地，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；所述信号处理器73，具体用于向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
本领域的技术人员应明白，本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、只读光盘、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了 基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (42)

  1. 一种信息通知方法，其特征在于，包括：
    用户设备UE接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示UE获取第二基站管辖的第二小区的系统信息；
    所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
  2. 如权利要求1所述的方法，其特征在于，所述通知消息中包含第二小区的小区标识；
    所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：所述UE按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
  3. 如权利要求1所述的方法，其特征在于，所述通知消息中包含第二小区的系统信息改变的时间；
    所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：
    所述UE根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
  4. 如权利要求1任一所述的方法，其特征在于，所述通知消息中包含第二小区的系统信息变化的内容；
    所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：
    所述UE按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
  5. 如权利要求1任一所述的方法，其特征在于，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；
    所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系 统信息，包括：
    所述UE按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
  6. 如权利要求1所述的方法，其特征在于，所述UE按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息，包括：
    所述UE按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或
    若所述UE处于空闲态时，则所述UE与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
  7. 一种信息通知方法，其特征在于，包括：
    第一基站接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息；
    所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
  8. 如权利要求7所述的方法，其特征在于，第一基站接收第二基站发送的指示消息，包括：
    所述第一基站直接接收第二基站发送的指示消息；或
    所述第一基站接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
  9. 如权利要求7或8所述的方法，其特征在于，所述指示消息中包含第二小区的小区标识；
    所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
  10. 如权利要求7所述的方法，其特征在于，所述指示消息中包含第二小区的系统信息改变的时间；
    所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
  11. 如权利要求7所述的方法，其特征在于，所述指示消息中还包含第二小区的系统信息变化的内容；
    所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
  12. 如权利要求7所述的方法，其特征在于，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    所述第一基站通过管辖的第一小区向所述UE发送的所述通知消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
  13. 如权利要求7所述的方法，其特征在于，所述第一基站通过管辖的第一小区向所述UE发送所述通知消息，包括：
    所述第一基站获取处于设备到设备D2D通信模式的UE；
    所述第一基站通过管辖的第一小区向获取的所述UE发送所述通知消息。
  14. 如权利要求13所述的方法，其特征在于，所述第一基站至少按照下述方式中的一种获取处于D2D通信模式的UE：
    所述第一基站在MME中获取处于D2D通信模式的UE；
    所述第一基站在所述第二基站中获取处于D2D通信模式的UE；
    所述第一基站获取存储的处于D2D通信模式的UE。
  15. 如权利要求13或14所述的方法，其特征在于，所述处于D2D通信模式的UE至少包括下述中的一种：
    使用所述第二小区提供的资源配置进行D2D通信模式的UE；
    在所述第二小区所在的频率上，处于D2D通信模式的UE。
  16. 一种信息通知方法，其特征在于，包括：
    第二基站确定是否需要用户设备UE获得所述第二基站管辖的第二小区的系统信息；
    在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，所述第二基站向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
  17. 如权利要求16所述的方法，其特征在于，所述第二基站向第一基站发送指示消息，包括：
    所述第二基站直接向所述第一基站发送指示消息；或
    所述第二基站将所述指示消息通过移动管理实体MME转发给所述第一基站。
  18. 如权利要求16或17所述的方法，其特征在于，所述指示消息中包含第二小区的小区标识；
    所述第二基站向第一基站发送的指示消息中还包含第二小区的小区标识。
  19. 如权利要求16或17所述的方法，其特征在于，所述指示消息中包含第二小区的系统信息改变的时间；
    所述第二基站向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
  20. 如权利要求16或17所述的方法，其特征在于，所述指示消息中还包含第二小区的系统信息变化的内容；
    所述第二基站向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
  21. 如权利要求16或17所述的方法，其特征在于，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    所述第二基站向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
  22. 一种用户终端，其特征在于，包括：
    接收模块，用于接收第一基站通过管辖的第一小区发送的通知消息，其中所述通知消息用于指示所述UE获取第二基站管辖的第二小区的系统信息；
    获取模块，用于按照接收到的所述通知消息获取第二基站管辖的第二小区的系统信息。
  23. 如权利要求22所述的用户终端，其特征在于，所述通知消息中包含第二小区的小区标识；
    所述获取模块，具体用于按照接收到的所述通知消息中包含的所述第二小区的小区标识获取第二基站管辖的第二小区的系统信息。
  24. 如权利要求22所述的用户终端，其特征在于，所述通知消息中包含第二小区的系统信息改变的时间；
    所述获取模块，具体用于根据接收到的所述通知消息中的第二小区的系统信息改变的时间，获取第二基站管辖的第二小区的系统信息。
  25. 如权利要求22所述的用户终端，其特征在于，所述通知消息中包含第二小区的系统信息变化的内容；
    所述获取模块，具体用于按照接收到的所述通知消息中的第二小区的系统信息变化的内容，在确定出需要重新获得第二小区的系统信息时，获取第二基站管辖的所述第二小区的系统信息。
  26. 如权利要求22所述的用户终端，其特征在于，所述通知消息中包含指示UE获得第二小区的系统信息的方式的信息；
    所述获取模块，具体用于按照接收到的所述通知消息指示的获得第二小区的系统信息的方式，获取第二基站管辖的第二小区的系统信息，其中，获得第二小区的系统信息的方式为：读取所述第二小区广播的所述第二小区的系统信息；或接收所述第一小区发送的所述第二小区的系统信息。
  27. 如权利要求22所述的用户终端，其特征在于，所述获取模块，具体用于按照接收到的所述通知消息读取所述第二小区广播的所述第二小区的系统信息；或若UE处于空闲态时，则与所述第一小区建立连接，并在建立的所述连接上获取所述第二小区的系统信息。
  28. 一种第一基站，其特征在于，包括：
    接收模块，用于接收第二基站发送的指示消息，所述指示消息用于通知所述第一基站向用户设备UE发送通知消息；
    发送模块，用于通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
  29. 如权利要求28所述的第一基站，其特征在于，所述接收模块，具体用于直接接收第二基站发送的指示消息；或接收移动管理实体MME转发的所述第二基站发送的所述指示消息。
  30. 如权利要求28或29所述的第一基站，其特征在于，所述指示消息中包含第二小区的小区标识；
    所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的小区标识。
  31. 如权利要求28所述的第一基站，其特征在于，所述指示消息中包含第二小区的系统信息改变的时间；
    所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息改变的时间。
  32. 如权利要求28所述的第一基站，其特征在于，所述指示消息中还包含第二小区的系统信息变化的内容；
    所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知消息中还包含第二小区的系统信息变化的内容。
  33. 如权利要求28所述的第一基站，其特征在于，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    所述发送模块，具体用于通过管辖的第一小区向所述UE发送的所述通知 消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
  34. 如权利要求28所述的第一基站，其特征在于，还包括：
    获取模块，用于获取处于设备到设备D2D通信模式的UE；
    所述发送模块，具体用于通过管辖的第一小区向获取的所述UE发送所述通知消息。
  35. 如权利要求34所述的第一基站，其特征在于，所述获取模块，具体用于至少按照下述方式中的一种获取处于D2D通信模式的UE：在MME中获取处于D2D通信模式的UE；在所述第二基站中获取处于D2D通信模式的UE；获取第一基站存储的处于D2D通信模式的UE。
  36. 如权利要求34或35所述的第一基站，其特征在于，所述获取模块获取的所述处于D2D通信模式的UE至少包括下述中的一种：使用所述第二小区提供的资源配置进行D2D通信模式的UE；在所述第二小区所在的频率上，处于D2D通信模式的UE。
  37. 一种第二基站，其特征在于，包括：
    确定模块，用于确定是否需要用户设备UE获得第二基站管辖的第二小区的系统信息；
    发送模块，用于在确定出需要所述UE获得所述第二基站管辖的第二小区的系统信息时，向第一基站发送指示消息，所述指示消息用于通知所述第一基站通过管辖的第一小区向所述UE发送通知消息，所述通知消息用于通知所述UE获得所述第二基站管辖的第二小区的系统信息。
  38. 如权利要求37所述的第二基站，其特征在于，所述发送模块，具体用于直接向所述第一基站发送指示消息；或将所述指示消息通过移动管理实体MME转发给所述第一基站。
  39. 如权利要求37或38所述的第二基站，其特征在于，所述指示消息 中包含第二小区的小区标识；
    所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的小区标识。
  40. 如权利要求37或38所述的第二基站，其特征在于，所述指示消息中包含第二小区的系统信息改变的时间；
    所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息改变的时间。
  41. 如权利要求37或38所述的第二基站，其特征在于，所述指示消息中还包含第二小区的系统信息变化的内容；
    所述发送模块，具体用于向第一基站发送的指示消息中还包含第二小区的系统信息变化的内容。
  42. 如权利要求37或38所述的第二基站，其特征在于，所述指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；
    所述发送模块，具体用于向第一基站发送的指示消息中还包含指示UE获得第二小区的系统信息的方式的信息；其中，所述UE获得第二小区的系统信息的方式为：UE读取所述第二小区广播的所述第二小区的系统信息；或UE接收所述第一小区发送的所述第二小区的系统信息。
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