WO2018028637A1 - 定时提前量的获取、计算、处理方法、装置及系统 - Google Patents

定时提前量的获取、计算、处理方法、装置及系统 Download PDF

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Publication number
WO2018028637A1
WO2018028637A1 PCT/CN2017/096850 CN2017096850W WO2018028637A1 WO 2018028637 A1 WO2018028637 A1 WO 2018028637A1 CN 2017096850 W CN2017096850 W CN 2017096850W WO 2018028637 A1 WO2018028637 A1 WO 2018028637A1
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Prior art keywords
timing advance
base station
target
source
uplink
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PCT/CN2017/096850
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English (en)
French (fr)
Inventor
吴昱民
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中兴通讯股份有限公司
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Publication of WO2018028637A1 publication Critical patent/WO2018028637A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a method, an apparatus, and a system for acquiring, calculating, and processing a timing advance amount.
  • FIG. 1 is a schematic diagram of a Timing Advance Group (TAG) correspondence relationship according to the related art of the present invention, such as Figure 1 shows that the DC includes two cell groups: MCG (Master Cell Group) and SCG (Secondary Cell Group).
  • MCG Master Cell Group
  • SCG Synchronization Advance Group
  • the MCG includes a PCell (Primary Cell) or additionally includes one or more SCells (Secondary Cell), and the SCG includes one PSCell (Primary Secondary Cell) or additionally includes one or more SCells.
  • MCG Master Cell Group
  • SCG Sty Cell Group
  • PSCell Primary Secondary Cell
  • TAG Timing Advance
  • pTAG Primary Timing Advance Group: Contains PCell and one or more SCells.
  • sTAG Synchronization Advance Group
  • psTAG Primary Secondary Timing Advance Group: Contains PSCell and one or more SCells.
  • Step 1 The UE reports a Measurement Report to the network side.
  • Step 2 The source eNB sends a handover request (Handover Request) to the target base station (Target eNB), including the resource configuration of the UE transmitting the uplink signal (PRACH configuration (Physical Random Access Channel, PRACH) )), after the source base station triggers the UE to send an uplink signal in the configured uplink resource.
  • a handover request Handover Request
  • PRACH configuration Physical Random Access Channel
  • Step 3 The target base station measures the uplink signal of the UE according to the uplink resource configured by the source base station, and calculates the uplink timing advance of the UE in the target cell.
  • the Handover Request Acknowledge includes: an uplink timing adjustment command (TAC); Send resource configuration (UL grant).
  • TAC uplink timing adjustment command
  • UL grant Send resource configuration
  • Step 4 The source base station sends a handover command to the UE, that is, a Radio Resource Control (RRC) connection reconfiguration (RRC Connection Reconfiguration) message.
  • RRC Radio Resource Control
  • Step 5a/5b The source base station initiates a data forwarding process, sends a number status transmission information (5a.SN Status Transfer) to the target base station, and forwards the data (5b.Data forwarding) to the target base station.
  • a number status transmission information (5a.SN Status Transfer)
  • 5b.Data forwarding The data forwarding
  • Step 6 The UE obtains an uplink timing advance (TA) of the target cell according to the TAC calculation, and sends an RRC connection configuration complete message (RRC Connection Reconfiguration) according to the uplink transmission resource configuration (UL grant) received in the handover command. Complete) to the target cell. After receiving the message, the target base station starts normal uplink and downlink data transmission and reception.
  • TA uplink timing advance
  • RRC Connection Reconfiguration RRC connection configuration complete message
  • UL grant uplink transmission resource configuration
  • the embodiment of the present invention provides a method, a device, and a system for acquiring, calculating, and processing a timing advance amount, so as to solve at least the technology for acquiring a TA value of a target cell through random access in a base station handover process in the related art. problem.
  • a method for acquiring a timing advance including: In the process of the serving base station of the user equipment UE being transferred from the source base station to the target base station, the source base station instructing the UE to send configuration information of the uplink resource to the target base station, where the configuration information includes: uplink of the source cell a configuration of a transmission resource, where the uplink transmission resource includes: a physical random access channel PRACH, a sounding reference signal SRS; and the source base station receives a timing advance amount TA of the target base station calculated by the target base station according to the configuration information.
  • the configuration information further includes at least one of the following: an identifier of the source timing advance group; a cell identifier of the source timing advance group; and a UE uplink timing advance of the source timing advance group.
  • the source base station instructing the UE to send the configuration information of the uplink resource to the target base station, the source base station triggering, by the source base station, the uplink signal sent by the UE to the target base station, where The uplink signal carries the configuration information.
  • the method further includes: the source base station pre-grouping the TA and the source timing Specifying information to be forwarded to the UE, wherein the specifying information is used by the UE to perform at least one of: determining an uplink timing advance of the UE in the target timing advance group; and timing advance timing out timing of the starting target timing advance group Device.
  • a method for calculating a timing advance includes: when a serving base station of a user equipment UE is transferred from a source base station to a target base station, the target base station receives configuration information of an uplink resource sent by the UE.
  • the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel (PRACH) and a sounding reference signal SRS; and the target base station calculates the target according to the configuration information.
  • PRACH physical random access channel
  • SRS sounding reference signal
  • the configuration information is carried in an uplink signal.
  • calculating the TA of the target base station according to the configuration information includes: the target base station measuring the uplink signal, and calculating an uplink TA of the target timing advance group available to the UE according to the uplink signal.
  • the method further includes: the target base station advancing the target timing group
  • the specified information of the uplink TA and the source timing advance group is sent to the source base station, where the specifying information is used by the UE to perform at least one of: determining an uplink timing advance of the UE in the target timing advance group; The timing advance timeout timer of the timing advance group.
  • the specifying information includes at least one of the following: an identifier of the source timing advance group, a cell identifier of the source timing advance group, an identifier of the target timing advance group, a cell identifier of the target timing advance group, and a correspondence of the target timing advance group.
  • the uplink timing advance adjustment information and the timing advance adjustment signal type are included in the specifying information.
  • a method for processing a timing advance including: in a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station, the UE according to an indication of the source base station
  • the target base station sends configuration information of the uplink resource, where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS.
  • the method further includes: receiving, by the UE, an uplink timing advance amount TA of the target base station sent by the source base station. And the specified information of the source timing advance group, wherein the TA of the target base station is calculated by the target base station according to the configuration information; and the UE performs at least one of the following behavior according to the specified information: determining that the UE is in the The uplink timing advance of the target timing advance group and the timing advance timeout timer of the target timing advance group are started.
  • the uplink timing advance of the target timing advance group includes one of: an uplink timing advance of the source timing advance group indicated by the network side; an uplink timing advance of the source timing advance group indicated by the network side plus a network side indication
  • the upstream timing adjustment value is adjusted.
  • a method for acquiring a timing advance including: in a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station, the source base station sends a carrying UE to a target base station.
  • the indication information of the uplink timing advance information includes at least one of: an identifier of a source timing advance group; a cell identifier of a source timing advance group; a UE uplink timing advance of the source timing advance group; a target timing The identifier of the advance group; the cell identifier of the target timing advance group; the UE uplink timing advance of the target timing advance group.
  • the timing advance TA information of the target base station includes: specifying information of a source timing advance group and a target timing advance group available to the UE, where the specifying information is used by the UE to perform at least one of the following actions: Determining an uplink timing advance of the UE in the target timing advance group; and starting a timing advance timeout timer of the target timing advance group.
  • the specifying information includes at least one of the following: an identifier of a source timing advance group, a cell identifier of a source timing advance group, an identifier of a target timing advance group, a cell identifier of a target timing advance group, and a source and a target cell Downstream timing deviation, timing advance adjustment signal type.
  • the method further includes: the source base station forwarding the specified information to The UE, wherein the specifying information is used by the UE to perform at least one of: determining an uplink timing advance of the UE in the target timing advance group, and starting a timing advance timeout timer of the target timing advance group.
  • a method for processing a timing advance including: in a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station, the target base station receives an uplink timing advance of the carrying UE.
  • the indication information of the information includes at least one of: an identifier of a source timing advance group; a cell identifier of a source timing advance group; a UE uplink timing advance of the source timing advance group; and a target timing advance group Identification; cell identifier of the target timing advance group; UE uplink timing advance of the target timing advance group; designation information of the source timing advance group and the target timing advance group; and designation information of the source timing advance group cell and the target timing advance group cell; Determining, by the target base station, the designation information of the uplink timing advance TA and the source timing advance group of the target base station according to the indication information, and transmitting the designation information to the source base station, where the designation information is used by the UE to perform At least one of the following behaviors: determining an uplink timing advance of the UE in the target timing advance group; The timing advance group of the calibration advance timer.
  • a method for processing a timing advance including: in a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station, the UE receives a target base station sent by a source base station.
  • the specified information of the uplink timing advance amount TA and the source timing advance group wherein the uplink timing advance TA of the target base station is calculated by the target base station according to at least one of the following uplink timing advance information: an identifier of the source timing advance group a cell identifier of the source timing advance group; a UE uplink timing advance amount of the source timing advance group; the UE performs at least one of the following behaviors according to the specified information: determining an uplink timing advance amount of the UE in the target timing advance group, and starting The timing advance timeout timer of the target timing advance group.
  • the uplink timing advance of the target timing advance group includes one of: an uplink timing advance of the source timing advance group indicated by the network side; an uplink timing advance of the source timing advance group indicated by the network side plus a network side indication
  • the upstream timing adjustment value is adjusted.
  • a timing advance amount obtaining apparatus which is applied to a source base station, and includes: an indication module, configured to be in a process of transferring a serving base station of a user equipment UE from a source base station to a target base station Instructing the UE to send the configuration information of the uplink resource to the target base station, where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel, a PRACH, and a sounding reference.
  • the signal SRS is configured to receive a timing advance TA of the target base station calculated by the target base station according to the configuration information.
  • a timing advance calculation device which is applied to a target base station, and includes: a receiving module, configured to receive in a process in which a serving base station of a UE is transferred from a source base station to a target base station
  • the configuration information of the uplink resource sent by the UE where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel (PRACH) and a sounding reference signal SRS;
  • PRACH physical random access channel
  • SRS sounding reference signal
  • a timing advance processing device which is applied to a user equipment UE, and includes: a sending module, configured to be a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station The configuration information of the uplink resource is sent to the target base station according to the indication of the source base station, where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel PRACH, sounding reference signal SRS.
  • a sending module configured to be a process in which a serving base station of a user equipment UE is transferred from a source base station to a target base station
  • the configuration information of the uplink resource is sent to the target base station according to the indication of the source base station, where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel PRACH, sounding reference signal SRS.
  • the device further includes: a receiving module, configured to: after the sending module sends the configuration information of the uplink resource to the target base station according to the indication of the source base station, receive the uplink timing of the target base station sent by the source base station And the specified information of the source timing advance group, wherein the TA of the target base station is calculated by the target base station according to the configuration information; and the UE performs at least one of the following actions according to the specified information: determining The UE advances the uplink timing advance amount of the target timing advance group, and starts the timing advance timeout timer of the target timing advance group.
  • a timing advance amount obtaining apparatus which is applied to a source base station, and includes: a sending module, configured to be in a process of transferring a serving base station of a user equipment UE from a source base station to a target base station And transmitting the indication information of the uplink timing advance information of the UE to the target base station, where the uplink timing advance information includes at least one of the following: an identifier of the source timing advance group; a cell identifier of the source timing advance group; and a source timing advance group UE uplink timing advance amount; target timing advance group identifier; target timing advance group cell identifier; target timing advance group UE uplink timing advance amount; source timing advance group and target timing advance group specifying information; source timing advance group group Specifying information of the group cell with the target timing advancement, wherein the designation information is used by the UE to perform at least one of: determining an uplink timing advance amount of the UE in the target timing advance group; and starting a timing advance amount of
  • a timing advance processing device which is applied to a target base station, and includes: a receiving module, configured to be in a process of transferring a serving base station of a user equipment UE from a source base station to a target base station Receiving a finger carrying the uplink timing advance information of the UE
  • the information wherein the uplink timing advance information includes at least one of: an identifier of a source timing advance group; a cell identifier of a source timing advance group; a UE uplink timing advance of the source timing advance group; and an identifier of the target timing advance group;
  • a timing advance processing device which is applied to a UE, and includes: a receiving module, configured to be in a process of transferring a serving base station of a user equipment UE from a source base station to a target base station, Receiving, by the source base station, the uplink timing advance amount TA of the target base station and the source timing advance group, wherein the uplink timing advance TA of the target base station is calculated by the target base station according to at least one of the following source uplink timing advance information.
  • the identifier of the source timing advance group the cell identifier of the source timing advance group; the UE uplink timing advance of the source timing advance group; and the execution module, configured to perform at least one of the following behavior according to the specified information: determining that the UE is in the The uplink timing advance of the target timing advance group and the timing advance timeout timer of the target timing advance group are started.
  • a timing advancement acquisition system including: a source base station, a target base station, and a user equipment UE, where the source base station includes: an indication module, which is set as a serving base station at the user equipment UE.
  • the uplink transmission resource includes: a physical random access channel PRACH, a sounding reference signal SRS; a first receiving module, configured to receive a timing advance amount TA of the target base station calculated by the target base station according to the configuration information;
  • the target base station includes: a receiving module, configured to receive the configuration information sent by the UE, and a calculation module, configured to calculate a timing advance TA of the target base station according to the configuration information, where the UE includes: a sending module, configured to Describe the source base station to the The target base station sends configuration information of the uplink resource.
  • a timing advance acquisition system including: a source base station, a target base station, and a user equipment UE, where the source base station includes: a sending module, configured to send a UE carrying the UE to the target base station.
  • the indication information of the uplink timing advance information includes at least one of: an identifier of a source timing advance group; a cell identifier of a source timing advance group; a UE uplink timing advance of the source timing advance group; a target timing
  • the target base station includes: a receiving module, configured to receive indication information that carries source uplink timing advance information available to the UE; and a sending module, configured to calculate,
  • the execution module is configured to perform at least one of the following actions according to the specified information: determining an uplink timing advance of the UE in the target timing advance group, and starting a timing advance timeout timer of the target timing advance group.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • the UE is instructed to send configuration information of the uplink resource to the target base station, where the configuration information includes: configuration of an uplink sending resource of the source cell.
  • the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS;
  • the source base station instructs the UE to send configuration information of the uplink resource to the target base station, where the configuration information includes: configuration of the uplink transmission resource of the source cell
  • the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS; and the source base station receives a timing advance TA of the target base station calculated by the target base station according to the configuration information.
  • FIG. 1 is a schematic diagram of a correspondence relationship of timing advance groups in the related art according to the present invention.
  • FIG. 2 is a schematic diagram of handover without random access in the related art according to the present invention.
  • FIG. 3 is a network architecture diagram in accordance with an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for acquiring a timing advance amount according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for calculating a timing advance amount according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for processing a timing advance amount according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another method for acquiring timing advance amount according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of another method for processing timing advance amount according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another method of processing timing advance according to an embodiment of the present invention.
  • FIG. 10 is a structural block diagram of a timing advance acquisition system according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a timing advance acquisition system according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a network-based calculation TA according to an embodiment of the present invention.
  • FIG. 3 is a network architecture diagram according to an embodiment of the present invention.
  • the network architecture includes: a source eNB (Evolved Node B: Evolved Node B)), target base station (target eNB), UE.
  • a source eNB Evolved Node B: Evolved Node B
  • target eNB target base station
  • UE User Equipment
  • FIG. 4 is a flowchart of a method for acquiring a timing advance amount according to an embodiment of the present invention. The process includes the following steps:
  • Step S402 in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station, the source base station instructs the UE to send the configuration information of the uplink resource to the target base station, where the configuration information includes: configuration of the uplink sending resource of the source cell,
  • the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS;
  • Step S404 the source base station receives the timing advance amount TA of the target base station calculated by the target base station according to the configuration information.
  • the source base station instructs the UE to send the configuration information of the uplink resource to the target base station, where the configuration information includes: configuration of the uplink sending resource of the source cell.
  • the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS; and the source base station receives a timing advance TA of the target base station calculated by the target base station according to the configuration information.
  • the execution body of the foregoing step may be a source base station or the like, but is not limited thereto.
  • the configuration information may further include: an identifier of the source timing advance group; the source timing advance group Cell identifier; UE uplink timing advance of the source timing advance group.
  • the source base station instructs the UE to send the configuration information of the uplink resource to the target base station, where the source base station triggers the UE to send an uplink signal to the target base station on the configured uplink resource, where the uplink signal carries the configuration information.
  • the method further includes: the source base station forwarding the specified information of the TA and the source timing advance group to the UE, where the designation in this embodiment
  • the information is used by the UE to perform at least one of: determining an uplink timing advance of the UE in the target timing advance group; and starting a timing advance timeout timer of the target timing advance group.
  • FIG. 5 is a flowchart of a method for calculating a timing advance amount according to an embodiment of the present invention. As shown in FIG. 5, the flow includes the following steps:
  • Step S502 in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station, the target base station receives the configuration information of the uplink resource sent by the UE, where the configuration information includes: configuration of the uplink sending resource of the source cell, and uplink sending
  • the resource includes: a physical random access channel PRACH, a sounding reference signal SRS;
  • Step S504 the target base station calculates the timing advance amount TA of the target base station according to the configuration information.
  • the configuration information is carried in the uplink signal.
  • calculating the TA of the target base station according to the configuration information includes: the target base station measures the uplink signal, and calculates an uplink TA of the target timing advance group available to the UE according to the uplink signal.
  • the method further includes: the target base station transmitting, to the source base station, the specified information of the uplink TA and the source timing advance group of the target timing advance group.
  • the specified information includes at least one of the following: an identifier of the source timing advance group, a cell identifier of the source timing advance group, an identifier of the target timing advance group, a cell identifier of the target timing advance group, and a corresponding uplink of the target timing advance group.
  • Timing advance adjustment information timing advance adjustment signal type.
  • FIG. 6 is a flowchart of a method for processing timing advance according to an embodiment of the present invention. As shown in FIG. 6, the process includes the following steps:
  • Step S602 in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station, the UE sends the configuration information of the uplink resource to the target base station according to the indication of the source base station, where the configuration information includes: the uplink sending resource of the source cell
  • the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS.
  • the method further includes: receiving, by the UE, the uplink timing advance amount TA of the target base station and the source timing advance group specified by the source base station, where The TA of the target base station is calculated by the target base station according to the configuration information; the UE performs at least one of the following actions according to the specified information: determining an uplink timing advance of the UE in the target timing advance group, and timing advance timing of starting the target timing advance group.
  • the uplink timing advance of the target timing advance group includes one of: an uplink timing advance of the source timing advance group indicated by the network side; an uplink timing advance of the source timing advance group indicated by the network side plus the network side indication Upstream timing advance adjustment value.
  • FIG. 7 is a flowchart of another method for acquiring timing advance amount according to an embodiment of the present invention, as shown in FIG. 7. The process includes the following steps:
  • the source base station sends the indication information of the uplink timing advance information of the UE to the target base station, where the serving base station of the user equipment UE is transferred from the source base station to the target base station, where the uplink timing advance information includes at least one of the following: The identifier of the source timing advance group; the cell identifier of the source timing advance group; the UE uplink timing advance of the source timing advance group; the identifier of the target timing advance group; the cell identifier of the target timing advance group; and the UE uplink timing advance of the target timing advance group.
  • Step S704 the source base station receives the timing advance TA information of the target base station obtained by the target base station according to the indication information.
  • the timing advance TA information of the target base station includes: the source timing available by the UE The specified information of the pre-group and target timing advance group.
  • the specified information includes at least one of the following: an identifier of the source timing advance group, a cell identifier of the source timing advance group, an identifier of the target timing advance group, a cell identifier of the target timing advance group, and a downlink timing between the source and the target cell.
  • the type of signal for deviation and timing advance adjustment includes at least one of the following: an identifier of the source timing advance group, a cell identifier of the source timing advance group, an identifier of the target timing advance group, a cell identifier of the target timing advance group, and a downlink timing between the source and the target cell.
  • the method further includes: the source base station forwarding the specified information to the UE, where the specified information is used by the UE to perform at least one of the following behaviors: Determining an uplink timing advance amount of the UE in the target timing advance group and starting a timing advance timeout timer of the target timing advance group.
  • FIG. 8 is a flowchart of another method for processing timing advance according to an embodiment of the present invention. As shown in FIG. 8, the process includes the following steps:
  • the target base station receives the indication information of the uplink timing advance information that carries the UE, where the uplink timing advance information includes at least one of the following: the source timing advance The identifier of the group; the cell identifier of the source timing advance group; the UE uplink timing advance of the source timing advance group; the identifier of the target timing advance group; the cell identifier of the target timing advance group; the UE uplink timing advance of the target timing advance group; The specified information of the timing advance group and the target timing advance group; the source timing advance group cell and the target timing advance group group specified information;
  • Step S804 the target base station calculates, according to the indication information, the designation information of the uplink timing advance TA and the source timing advance group of the target base station, and sends the designation information to the source base station, where the designation information is used by the UE to perform at least the following behavior.
  • the designation information is used by the UE to perform at least the following behavior.
  • FIG. 9 is a flowchart of another method for processing timing advance according to an embodiment of the present invention. As shown in FIG. 9, the process includes the following steps:
  • Step S902 in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station, the UE receives the uplink timing advance amount TA of the target base station and the source timing advance group specified by the source base station, where the target base station uplinks.
  • the timing advance TA is calculated by the target base station according to at least one of the following uplink timing advance information: an identifier of the source timing advance group; The cell identifier of the group in advance; the uplink timing advance of the UE in the source timing advance group;
  • Step S904 the UE performs at least one of the following actions according to the specified information: determining an uplink timing advance of the UE in the target timing advance group, and starting a timing advance timeout timer of the target timing advance group.
  • the uplink timing advance of the target timing advance group includes one of: an uplink timing advance of the source timing advance group indicated by the network side; an uplink timing advance of the source timing advance group indicated by the network side plus a network side indication
  • the upstream timing adjustment value is adjusted.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a timing advance amount acquiring device a timing advance amount calculating device, a timing advance amount processing device, and a timing advance amount acquiring system are further provided for implementing the above embodiment and the preferred embodiment. The description will not be repeated.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the present embodiment provides a timing advance acquisition device, which is applied to a source base station, and includes: an indication module, configured to: when the serving base station of the user equipment UE is transferred from the source base station to the target base station, instructing the UE to send the uplink resource.
  • the configuration information is sent to the target base station, where the configuration information includes: configuration of an uplink transmission resource of the source cell, the uplink transmission resource includes: a physical random access channel PRACH, a sounding reference signal SRS; and a receiving module configured to receive the target base station according to The timing advance TA of the target base station calculated by the configuration information.
  • the present embodiment provides a timing advance calculation device, which is applied to a target base station, and includes: a receiving module, configured to receive uplink resources sent by the UE during a process in which the serving base station of the UE is transferred from the source base station to the target base station.
  • the configuration information includes: configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel PRACH and a sounding reference signal SRS; and a calculation module configured to calculate an uplink timing of the target base station according to the configuration information
  • the advance TA and the source timing advance group specify information and transmit the designation information to the source base station.
  • the embodiment provides a processing device for timing advance, which is applied to the user equipment UE, and includes: a sending module, configured to be in the process of transferring the serving base station of the user equipment UE from the source base station to the target base station, according to the source base station
  • the configuration information of the uplink resource is sent to the target base station, where the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel (PRACH) and a sounding reference signal (SRS).
  • PRACH physical random access channel
  • SRS sounding reference signal
  • the device further includes: a receiving module, configured to: after the sending module sends the configuration information of the uplink resource to the target base station according to the indication of the source base station, the uplink timing advance amount TA and the source timing advance group of the target base station sent by the source base station Designation information, wherein the TA of the target base station is calculated by the target base station according to the configuration information;
  • the UE performs at least one of the following actions according to the specified information: determining an uplink timing advance of the UE in the target timing advance group, and starting a timing advance timeout timer of the target timing advance group.
  • FIG. 10 is a structural block diagram of a timing advance acquisition system according to an embodiment of the present invention. As shown in FIG. 10, the system includes: a source base station 10, a target base station 12, and a user equipment UE14.
  • the source base station 10 includes: an indication module 102, configured to: when the serving base station of the user equipment UE is transferred from the source base station to the target base station, instructing the UE to send configuration information of the uplink resource to the target base station, where the configuration information includes: the source cell
  • the configuration of the uplink transmission resource, the uplink transmission resource includes: a physical random access channel (PRACH) and a sounding reference signal SRS;
  • the first receiving module 104 is configured to receive a timing advance TA of the target base station calculated by the target base station according to the configuration information;
  • the target base station 12 includes: a second receiving module 122, configured to receive a configuration letter sent by the UE
  • the calculation module 124 is configured to calculate a timing advance amount TA of the target base station according to the configuration information;
  • the UE 14 includes: a sending module 142, configured to send configuration information of the uplink resource to the target base station according to the indication of the source base station.
  • the embodiment further provides another timing advance acquisition device, which is applied to the source base station, and includes: a sending module, configured to be in a process of transferring the serving base station of the user equipment UE from the source base station to the target base station, to the target base station And transmitting the indication information of the source uplink timing advance information that is available to the UE, where the source uplink timing advance information includes at least one of: an identifier of the source timing advance group; a cell identifier of the source timing advance group; and an uplink timing of the UE of the source timing advance group
  • the receiving module is configured to receive the timing advance TA information of the target base station obtained by the target base station according to the indication information.
  • the embodiment further provides another timing advance processing device, which is applied to the target base station, and includes: a receiving module, configured to receive the carried UE in a process in which the serving base station of the user equipment UE is transferred from the source base station to the target base station by the source base station.
  • the indication information of the source uplink timing advance information where the source uplink timing advance information includes at least one of: an identifier of the source timing advance group; a cell identifier of the source timing advance group; and an uplink timing advance amount of the UE of the source timing advance group;
  • the sending module is configured to send, to the source base station, the specified information of the uplink timing advance TA and the source timing advance group of the target base station.
  • the embodiment further provides another timing advance processing device, which is applied to the UE, and includes: a receiving module, configured to send, when the serving base station of the user equipment UE is transferred from the source base station to the target base station, the receiving source base station sends The uplink timing advance amount TA of the target base station and the designation information of the source timing advance group, wherein the uplink timing advance TA of the target base station is calculated by the target base station according to at least one of the following source uplink timing advance information: the source timing advance group a cell identifier of the source timing advance group; a UE uplink timing advance of the source timing advance group; and an execution module configured to perform at least one of the following actions according to the specified information: determining an uplink timing advance of the UE in the target timing advance group, The timing advance timeout timer of the target timing advance group is started.
  • a receiving module configured to send, when the serving base station of the user equipment UE is transferred from the source base station to the target base station, the receiving source base station sends The uplink timing advance
  • FIG. 11 is a structural block diagram of a timing advance acquisition system according to an embodiment of the present invention, As shown in FIG. 11, the system includes: a source base station 20, a target base station 22, and a user equipment UE24.
  • the source base station 20 includes: a first sending module 202, configured to send, to the target base station, indication information that carries the source uplink timing advance information that is available to the UE, where the source uplink timing advance information includes at least one of the following: an identifier of the source timing advance group; The cell identifier of the source timing advance group; the UE uplink timing advance amount of the source timing advance group; the first receiving module 204 is configured to receive the timing advance TA information of the target base station obtained by the target base station according to the indication information; and the identifier of the target timing advance group The cell identifier of the target timing advance group; the UE uplink timing advance of the target timing advance group; the designation information of the source timing advance group and the target timing advance group; the source timing advance group cell and the target timing advance group cell specifying information, wherein The specifying information is used by the UE to perform at least one of: determining an uplink timing advance of the UE in the target timing advance group; and starting a timing advance timeout timer of the target timing advance
  • the target base station 22 includes: a second receiving module 222, configured to receive indication information that carries source uplink timing advance information available to the UE; and a second sending module 224 configured to calculate an uplink timing advance amount TA and source of the target base station according to the indication information. Timing advances the specified information of the group and sends the specified information to the source base station;
  • the UE 24 includes: a third receiving module 242, configured to receive the uplink timing advance TA and the source timing advance group of the target base station sent by the source base station; and the executing module 244 is configured to perform at least one of: determining according to the specified information: determining The UE advances the uplink timing advance amount of the target timing advance group, and starts the timing advance timeout timer of the target timing advance group.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • This embodiment is an optional embodiment of the present invention, which is used to describe the present application in detail.
  • This embodiment relates to a process for changing a serving base station to a UE in an LTE system, including single connection switching; dual connection switching; When the secondary base station is changed, how does the UE initiate a random access procedure without acquiring a random access procedure when multiple cells with different uplink timing relationships are configured, and can acquire multiple target cells? Upstream timing.
  • This embodiment provides a method for the UE to acquire the uplink timing of the target cell in the multi-TAG, including two sets, where the method 1: the TA calculated based on the network:
  • the source base station requests the target base station to allocate resources to the UE, and instructs the UE of the source cell to send configuration information of the uplink resource, where the configuration information includes at least one of the following:
  • Configuration of an uplink transmission resource of one or more source cells where the uplink transmission resource includes a configuration of a PRACH/SRS or other uplink channel;
  • the source base station triggers the UE to send an uplink signal on the configured uplink resource.
  • the target base station measures the uplink signal sent by the UE, and calculates an uplink timing advance quantity of the one or more target timing advance groups available to the UE according to the uplink signal, and the uplink timing advance information and the source timing advance group of the target timing advance group.
  • the corresponding relationship is sent to the source base station, and the uplink timing advance information of the target timing advance group and the correspondence information of the source timing advance group include at least one of the following:
  • the uplink timing advance information of the target base station and the correspondence information of the source timing advance group are forwarded to the UE.
  • the UE performs at least one of the following actions according to the uplink timing advance information of the target timing advance group and the correspondence information of the source timing advance group:
  • the uplink timing advance of the UE in the target timing advance group is determined.
  • the timing advance timeout timer of the target timing advance group is started.
  • the method for determining the uplink timing advance of the UE in the target timing advance group includes:
  • the uplink timing advance of the target timing advance group is the uplink timing advance of the source timing advance group indicated by the network side.
  • the uplink timing advance of the target timing advance group is the uplink timing advance of the source timing advance group indicated by the network side plus the uplink timing advance adjustment value indicated by the network side.
  • Method 2 TA based on UE calculation
  • the source base station requests the target base station to allocate resources to the UE, and indicates the source uplink timing advance information available to the target base station UE, and the uplink timing advance information includes at least one of the following:
  • the target base station sends, to the source base station, a correspondence between one or more source timing advance groups and a target timing advance group that are available to the UE, and the mapping relationship between the source timing advance group and the target timing advance group includes at least one of the following:
  • the source base station forwards the correspondence between the one or more source timing advance groups and the target timing groups of the received target base station to the UE.
  • the UE performs at least One of the following behaviors:
  • the uplink timing advance of the UE in the target timing advance group is determined.
  • the timing advance timeout timer of the target timing advance group is started.
  • the method for determining the uplink timing advance of the UE in the target timing advance group includes:
  • the uplink timing advance of the target timing advance group is the uplink timing advance of the source timing advance group indicated by the network side.
  • the uplink timing advance of the target timing advance group is the uplink timing advance of the source timing advance group indicated by the network side plus the uplink timing advance adjustment value obtained by the UE calculation.
  • the TA value of any one of the target TAGs can be calculated according to the TA value of any one source TAG, thereby increasing the TA value.
  • Embodiment 1 TA based on network calculation
  • FIG. 12 is a schematic diagram of a network-based TA according to an embodiment of the present invention.
  • the TA step based on the network calculation is as shown in FIG. 12.
  • the uplink signal that the source base station triggers the UE to report may also be an SRS/PUSCH (Physical Uplink Shared Channel).
  • SRS/PUSCH Physical Uplink Shared Channel
  • Other types of uplink signals, such as physical uplink shared channel, are not repeated here because the steps are the same.
  • Step 1 The source base station specifies the following information in the handover request message (such as TAG Info in the 12Handover Reques t message):
  • Source cell ID (eg sourceCell1)
  • Source TAG identifier of the source cell (such as sourceTAG1)
  • the source base station may trigger the UE to send an uplink signal (preamble) on the PRACH resource of the source cell by using a PDCCH (Physical Downlink Control Channel) order command.
  • PDCCH Physical Downlink Control Channel
  • Step 2 After receiving the PRACH configuration of the source cell, the target base station detects the uplink sending signal of the UE on the PRACH resource of the source cell, and determines the uplink timing adjustment information of the UE on a certain TAG (such as targetTAG1). For example, TAC), and the correspondence between the adjustment information of the target TAG and the source TAG is sent to the source base station by using a handover request response message (TA Mapping Info in the Handover Request Acknowledge message in the figure).
  • TAG such as targetTAG1
  • TAC handover request response message
  • Source TAG identifier (eg sourceTAG1)
  • Upstream timing signal type of source TAG (such as PRACH)
  • Target TAG identifier eg targetTAG1
  • Uplink timing adjustment information (such as TAC) of the target TAG, which may be "0".
  • Step 3 The source base station forwards the handover command from the target base station to the UE (TA Mapping Info in the RRC Connection Reconfiguration message as shown above).
  • Step 4 After receiving the TA adjustment information of the target TAG, the UE may calculate the TA information of the TAG, and start the corresponding TAT timer after obtaining the new TA information.
  • the calculation method is as follows:
  • N TA, target N TA, source + N TAC
  • N TA, source The uplink timing advance of the source codeTAG upstream transmission signal. If the PRACH signal is specified, it is the uplink timing advance of the PRACH signal.
  • N TAC The uplink timing adjustment information of the target target TAG1 calculates the acquired uplink timing adjustment amount.
  • N TA, target The upstream timing advance of the target TAG.
  • Step 1 The source base station specifies the following information in the handover request message (as shown in Figure 12Handover). TAG Info in the Request message:
  • Source TAG identifier (eg sourceTAG1)
  • the cell ID to which the source TAG belongs (for example, sourceCell1)
  • Step 2 The target base station determines the TAG and the cell that the UE needs to calculate the uplink timing advance, and sends the correspondence between the adjustment information of the target TAG and the source TAG to the source base station through the handover request response message (as shown in the Handover Request Acknowledge message above).
  • TA Mapping Info including:
  • Source TAG identifier (eg sourceTAG1)
  • the cell ID to which the source TAG belongs (for example, sourceCell1)
  • Target TAG identifier eg targetTAG1
  • the cell ID to which the target TAG belongs (for example, targetCell1)
  • Step 3 The source base station forwards the handover command from the target base station to the UE (as shown in Figure 12, TA Mapping Info in the RRCConnectionReconfiguration message).
  • Step 4 After receiving the TA adjustment information of the target TAG, the UE may calculate the TA information of the TAG, and start the corresponding TAT timer after obtaining the new TA information.
  • the calculation method is as follows:
  • N TA, target N TA, source + N TA
  • N TA, source The upstream timing advance of the source codeTAG upstream transmission signal.
  • N TA UE calculates the acquired target targetTAG1 uplink timing adjustment information, such as specifying a source cell identity (sourceCell1) and the target cell ID (targetCell1), the UE calculates the uplink timing adjustment information based on the specified cell, otherwise from the TAG any cell Calculation The uplink timing adjustment information.
  • sourceCell1 source cell identity
  • targetCell1 target cell ID
  • N TA, target The upstream timing advance of the target target TAG1.
  • the uplink timing advance of the target target TAG1 may be the same as the upstream timing advance of the source sourceTAG1.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the serving base station of the user equipment UE in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station, instructing the UE to send the configuration information of the uplink resource to the target base station, where the configuration information includes: configuration of the uplink sending resource of the source cell, and uplink sending resource
  • the method includes: a physical random access channel PRACH, and a sounding reference signal SRS;
  • the timing advance TA of the target base station calculated by the target base station according to the configuration information.
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs, according to the stored program code in the storage medium, that the source base station instructs the UE to send configuration information of the uplink resource in the process that the serving base station of the user equipment UE is transferred from the source base station to the target base station.
  • the configuration information includes: a configuration of an uplink transmission resource of the source cell, where the uplink transmission resource includes: a physical random access channel (PRACH) and a sounding reference signal SRS;
  • PRACH physical random access channel
  • SRS sounding reference signal
  • the processor performs, according to the stored program code in the storage medium, a timing advance TA of the target base station that is calculated by the target base station according to the configuration information.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Execution shown or described The steps are either made into individual integrated circuit modules, or a plurality of modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the method, device, and system for acquiring, calculating, and processing the timing advance amount provided by the embodiment have the following beneficial effects: the related art can only obtain the target cell through random access during the handover process of the base station.
  • the technical problem of the TA value is that the TA value of the target cell can be calculated on multiple TAGs of the UE without initiating random access.

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Abstract

本发明实施例提供了一种定时提前量的获取、计算、处理方法、装置及系统，其中，该方法包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；源基站接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。通过本发明实施例，解决了相关技术中在基站切换过程中只能通过随机接入获取目标小区的TA值的技术问题。

Description

定时提前量的获取、计算、处理方法、装置及系统 技术领域
本发明实施例涉及通信领域，具体而言，涉及一种定时提前量的获取、计算、处理方法、装置及系统。
背景技术
在长期演进系统(Long Term Evolution，LTE)系统中引入了双连接(Dual Connectivity，DC)功能，图1是根据本发明相关技术中的定时提前组(Timing Advance Group，TAG)对应关系示意图，如图1示，DC包括两个小区组：MCG(Master Cell Group，主小区组)和SCG(Secondary Cell Group，辅小区组)。其中MCG包括一个PCell(Primary Cell，主小区)或额外包括一个或多个SCell(Secondary Cell:，辅小区)，SCG包括一个PSCell(Primary Secondary Cell，主辅助小区)或额外包括一个或多个SCell。
对于配置了多个小区的UE(User Equipment，用户设备)，有相同的上行定时提前量(Timing Advance，TA)的小区属于同一个TAG，当UE获得新的TA值的时候，UE启动或重启该TAG的TA值的定时对齐定时器(Time Alignment Timer，TAT)，当该TAT超时后该TAG处于上行失同步状态。UE的TAG类型按照以下划分：
pTAG(Primary Timing Advance Group，主定时提前组)：包含PCell和一个或多个SCell。
sTAG(Secondary Timing Advance Group，辅定时提前组)：仅包含一个或多个SCell。
psTAG(Primary Secondary Timing Advance Group，主要的辅定时提前组)：包含PSCell和一个或多个SCell。
图2是根据本发明相关技术中的无随机接入的切换示意图，
基于网络计算的无随机接入(RACHless)的切换过程
如图2所示该方案描述如下：
步骤1：UE上报测量报告(Measurement Report)给网络侧。
步骤2：源基站(Source eNB)发送切换请求(Handover Request)给目标基站(Target eNB)，包含UE的发送上行信号的资源配置(PRACH configuration(物理随机接入信道(Physical Random Access Channel，PRACH))),之后源基站触发UE在该配置的上行资源发送上行信号。
步骤3：目标基站根据源基站配置的上行资源测量UE的上行信号，并计算UE在目标小区的上行定时提前量，回复切换请求确认(Handover Request Acknowledge)包含：上行定时调整命令(TAC)；上行发送资源配置(UL grant)。
步骤4：源基站发送切换命令给UE，即无线资源控制(Radio Resource Control，RRC)连接重配置(RRC Connection Reconfiguration)消息。
步骤5a/5b:源基站发起数据前转过程，发送编号状态传输信息(5a.SN Status Transfer)给目标基站，并将数据前转(5b.Data forwarding)给目标基站。
步骤6：UE根据该TAC计算获得其在目标小区的上行定时提前量(TA)，并根据在切换命令中接收到的上行发送资源配置(UL grant)，发送RRC连接配置完成消息(RRC Connection Reconfiguration Complete)给目标小区。目标基站收到该消息后开始进行正常的上下行数据收发。
针对相关技术中存在的上述问题(例如：在基站切换过程中只能通过随机接入获取目标小区的TA值)，目前尚未发现有效的解决方案。
发明内容
本发明实施例提供了一种定时提前量的获取、计算、处理方法、装置及系统，以至少解决解决了相关技术中在基站切换过程中只能通过随机接入获取目标小区的TA值的技术问题。
根据本发明的一个实施例，提供了一种定时提前量的获取方法，包括： 在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述源基站指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；所述源基站接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA。
可选地，所述配置信息还包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量。
可选地，所述源基站指示所述UE发送上行资源的配置信息给所述目标基站包括：所述源基站触发所述UE在配置的上行资源上发送上行信号给所述目标基站，其中，所述上行信号携带所述配置信息。
可选地，在所述源基站接收所述目标基站根据所述配置信息计算得到的所述目标基站的TA之后，所述方法还包括：所述源基站将所述TA与源定时提前组的指定信息转发给所述UE，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
根据本发明的一个实施例，提供了一种定时提前量的计算方法，包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，目标基站接收UE发送的上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；所述目标基站根据所述配置信息计算所述目标基站的定时提前量TA。
可选地，所述配置信息携带在上行信号中。
可选地，根据所述配置信息计算所述目标基站的TA包括：所述目标基站测量所述上行信号，并根据所述上行信号计算所述UE可用的目标定时提前组的上行TA。
可选地，在根据所述上行信号计算所述UE可用的目标定时提前组的上行TA之后，所述方法还包括：所述目标基站将所述目标定时提前组的 上行TA与源定时提前组的指定信息发送给所述源基站，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
可选地，所述指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、目标定时提前组的对应的上行定时提前调整信息、定时提前量调整的信号类型。
根据本发明的一个实施例，提供了一种定时提前量的处理方法，包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述UE根据所述源基站的指示向所述目标基站发送上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。
可选地，在所述UE根据所述源基站的指示向所述目标基站发送上行资源的配置信息之后，所述方法还包括：所述UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的TA是所述目标基站根据所述配置信息计算得到的；所述UE根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
可选地，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
根据本发明的一个实施例，提供了一种定时提前量的获取方法，包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述源基站向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前 量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；所述源基站接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息。
可选地，所述目标基站的定时提前量TA信息包括：UE可用的源定时提前组与目标定时提前组的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
可选地，所述指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、源和目标小区间的下行定时偏差、定时提前量调整的信号类型。
可选地，在所述源基站接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息之后，所述方法还包括：所述源基站将所述指定信息转发给所述UE，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
根据本发明的一个实施例，提供了一种定时提前量的处理方法，包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述目标基站接收携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；所述目标基站根据所述指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
根据本发明的一个实施例，提供了一种定时提前量的处理方法，包括：在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的上行定时提前量TA是所述目标基站根据以下上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；所述UE根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
可选地，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
根据本发明的另一个实施例，提供了一种定时提前量的获取装置，应用在源基站中，包括：指示模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；接收模块，设置为接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA。
根据本发明的另一个实施例，提供了一种定时提前量的计算装置，应用在目标基站中，包括：接收模块，设置为在UE的服务基站由源基站转移为目标基站的过程中，接收UE发送的上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；计算模块，设置为根据所述指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
根据本发明的另一个实施例，提供了一种定时提前量的处理装置，应用在用户设备UE中，包括：发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，根据所述源基站的指示向所述目标基站发送上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。
可选的，所述装置还包括：接收模块，设置为在所述发送模块根据所述源基站的指示向所述目标基站发送上行资源的配置信息之后，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的TA是所述目标基站根据所述配置信息计算得到的；所述UE根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
根据本发明的另一个实施例，提供了一种定时提前量的获取装置，应用在源基站中，包括：发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；接收模块，设置为接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息。
根据本发明的另一个实施例，提供了一种定时提前量的处理装置，应用在目标基站中，包括：接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收携带UE的上行定时提前信息的指 示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；发送模块，设置为向所述源基站发送目标基站的上行定时提前量TA与源定时提前组的指定信息。
根据本发明的另一个实施例，提供了一种定时提前量的处理装置，应用在UE中，包括：接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的上行定时提前量TA是所述目标基站根据以下源上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；执行模块，设置为根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
根据本发明的另一个实施例，提供了一种定时提前量的获取系统，包括：源基站、目标基站、用户设备UE，所述源基站包括：指示模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；第一接收模块，设置为接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA；所述目标基站包括：第二接收模块，设置为接收所述UE发送的所述配置信息；计算模块，设置为根据所述配置信息计算所述目标基站的定时提前量TA；所述UE包括：发送模块，设置为根据所述源基站的指示向所述 目标基站发送上行资源的配置信息。
根据本发明的另一个实施例，提供了一种定时提前量的获取系统，包括：源基站、目标基站、用户设备UE，所述源基站包括：发送模块，设置为向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；接收模块，设置为接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息；所述目标基站包括：接收模块，设置为接收携带UE可用的源上行定时提前信息的指示信息；发送模块，设置为根据所述指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息；所述UE包括：接收模块，设置为接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息；
执行模块，设置为根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
接收所述目标基站根据所述配置信息计算得到的所述目标基站的定 时提前量TA。
通过本发明，在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；源基站接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。解决了相关技术中在基站切换过程中只能通过随机接入获取目标小区的TA值的技术问题，实现了在不发起随机接入的也能在UE的多个TAG上计算出目标小区的TA值。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明相关技术中的定时提前组对应关系示意图；
图2是根据本发明相关技术中的无随机接入的切换示意图；
图3是根据本发明实施例的网络构架图；
图4是根据本发明实施例的一种定时提前量的获取方法的流程图；
图5是根据本发明实施例的一种定时提前量的计算方法的流程图；
图6是根据本发明实施例的一种定时提前量的处理方法的流程图；
图7是根据本发明实施例的另一种定时提前量的获取方法的流程图；
图8是根据本发明实施例的另一种定时提前量的处理方法的流程图；
图9是根据本发明实施例的另一种定时提前量的处理方法的流程图；
图10是根据本发明实施例的一种定时提前量的获取系统的结构框图；
图11是根据本发明实施例的一种定时提前量的获取系统的结构框图；
图12是根据本发明实施例的基于网络计算的TA的示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
本申请实施例可以运行于图3所示的网络架构上，图3是根据本发明实施例的网络构架图，如图3所示，该网络架构包括：源基站(source eNB(Evolved Node B:演进节点B))、目标基站(target eNB)、UE。
在本实施例中提供了一种运行于上述网络架构的定时提前量的获取方法，图4是根据本发明实施例的一种定时提前量的获取方法的流程图，如图4所示，该流程包括如下步骤：
步骤S402，在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
步骤S404，源基站接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。
通过上述步骤，在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；源基站接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。解决了相关技术中在基站切换过程中只能通过随机接入获取目标小区的TA值的技术问题，实现了在不发起随机接入的也能在UE的多个TAG上计算出目标小区的TA值。
可选地，上述步骤的执行主体可以为源基站等，但不限于此。
可选的，配置信息还可以包括：源定时提前组的标识；源定时提前组 的小区标识；源定时提前组的UE上行定时提前量。
可选的，源基站指示UE发送上行资源的配置信息给目标基站包括：源基站触发UE在配置的上行资源上发送上行信号给目标基站，其中，上行信号携带配置信息。
可选的，在源基站接收目标基站根据配置信息计算得到的目标基站的TA之后，方法还包括：源基站将TA与源定时提前组的指定信息转发给UE，其中，本实施例中的指定信息用于UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
图5是根据本发明实施例的一种定时提前量的计算方法的流程图，如图5所示，该流程包括如下步骤：
步骤S502，在用户设备UE的服务基站由源基站转移为目标基站的过程中，目标基站接收UE发送的上行资源的配置信息，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
步骤S504，目标基站根据配置信息计算目标基站的定时提前量TA。
可选的，配置信息携带在上行信号中。
可选的，根据配置信息计算目标基站的TA包括：目标基站测量上行信号，并根据上行信号计算UE可用的目标定时提前组的上行TA。
可选的，在根据上行信号计算UE可用的目标定时提前组的上行TA之后，方法还包括：目标基站将目标定时提前组的上行TA与源定时提前组的指定信息发送给源基站。
可选的，指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、目标定时提前组的对应的上行定时提前调整信息、定时提前量调整的信号类型。
图6是根据本发明实施例的一种定时提前量的处理方法的流程图，如图6所示，该流程包括如下步骤：
步骤S602，在用户设备UE的服务基站由源基站转移为目标基站的过程中，UE根据源基站的指示向目标基站发送上行资源的配置信息，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。
可选的，在UE根据源基站的指示向目标基站发送上行资源的配置信息之后，还包括：UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，目标基站的TA是目标基站根据配置信息计算得到的；UE根据指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。具体的，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
在本实施例中提供了另一种运行于上述网络架构的定时提前量的获取方法，图7是根据本发明实施例的另一种定时提前量的获取方法的流程图，如图7所示，该流程包括如下步骤：
步骤S702，在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站向目标基站发送携带UE的上行定时提前信息的指示信息，其中，上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；
步骤S704，源基站接收目标基站根据指示信息得到的目标基站的定时提前量TA信息。
可选的，目标基站的定时提前量TA信息包括：UE可用的源定时提 前组与目标定时提前组的指定信息。
可选的，指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、源和目标小区间的下行定时偏差、定时提前量调整的信号类型。
可选的，在源基站接收目标基站根据指示信息得到的目标基站的定时提前量TA信息之后，还包括：源基站将指定信息转发给UE，其中，指定信息用于UE执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
图8是根据本发明实施例的另一种定时提前量的处理方法的流程图，如图8所示，该流程包括如下步骤：
步骤S802，在用户设备UE的服务基站由源基站转移为目标基站的过程中，目标基站接收携带UE的上行定时提前信息的指示信息，其中，上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；
步骤S804，目标基站根据指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向源基站发送指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
图9是根据本发明实施例的另一种定时提前量的处理方法的流程图，如图9所示，该流程包括如下步骤：
步骤S902，在用户设备UE的服务基站由源基站转移为目标基站的过程中，UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，目标基站的上行定时提前量TA是目标基站根据以下上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定 时提前组的小区标识；源定时提前组的UE上行定时提前量；
步骤S904，UE根据指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
可选的，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
实施例2
在本实施例中还提供了一种定时提前量的获取装置、定时提前量的计算装置、定时提前量的处理装置、定时提前量的获取系统，用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
本实施例提供了一种定时提前量的获取装置，应用在源基站中，包括：指示模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；接收模块，设置为接收目标基站根据 配置信息计算得到的目标基站的定时提前量TA。
本实施例提供了一种定时提前量的计算装置，应用在目标基站中，包括：接收模块，设置为在UE的服务基站由源基站转移为目标基站的过程中，接收UE发送的上行资源的配置信息，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；计算模块，设置为根据配置信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向源基站发送指定信息。
本实施例提供了一种定时提前量的处理装置，应用在用户设备UE中，包括：发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，根据源基站的指示向目标基站发送上行资源的配置信息，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。可选的，装置还包括：接收模块，设置为在发送模块根据源基站的指示向目标基站发送上行资源的配置信息之后，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，目标基站的TA是目标基站根据配置信息计算得到的；
UE根据指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
图10是根据本发明实施例的一种定时提前量的获取系统的结构框图，如图10所示，该系统包括：源基站10、目标基站12、用户设备UE14，
源基站10包括：指示模块102，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；第一接收模块104，设置为接收目标基站根据配置信息计算得到的目标基站的定时提前量TA；
目标基站12包括：第二接收模块122，设置为接收UE发送的配置信 息；计算模块124，设置为根据配置信息计算目标基站的定时提前量TA；
UE14包括：发送模块142，设置为根据源基站的指示向目标基站发送上行资源的配置信息。
本实施例还提供了另一种定时提前量的获取装置，应用在源基站中，包括：发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，向目标基站发送携带UE可用的源上行定时提前信息的指示信息，其中，源上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；接收模块，设置为接收目标基站根据指示信息得到的目标基站的定时提前量TA信息。
本实施例还提供了另一种定时提前量的处理装置，应用在目标基站中，包括：接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收携带UE可用的源上行定时提前信息的指示信息，其中，源上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；发送模块，设置为向源基站发送目标基站的上行定时提前量TA与源定时提前组的指定信息。
本实施例还提供了另一种定时提前量的处理装置，应用在UE中，包括：接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，目标基站的上行定时提前量TA是目标基站根据以下源上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；执行模块，设置为根据指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
图11是根据本发明实施例的一种定时提前量的获取系统的结构框图， 如图11所示，该系统包括：源基站20、目标基站22、用户设备UE24，
源基站20包括：第一发送模块202，设置为向目标基站发送携带UE可用的源上行定时提前信息的指示信息，其中，源上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；第一接收模块204，设置为接收目标基站根据指示信息得到的目标基站的定时提前量TA信息；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；
目标基站22包括：第二接收模块222，设置为接收携带UE可用的源上行定时提前信息的指示信息；第二发送模块224，设置为根据指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向源基站发送指定信息；
UE24包括：第三接收模块242，设置为接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息；执行模块244，设置为根据指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例3
本实施例是本发明的可选实施例，用于对本申请进行详细说明：本实施例涉及一种LTE系统中在给UE更改服务基站的过程，包括单连接切换；双连接切换；双连接下的辅基站变更，UE如何在配置了多个不同上行定时关系的小区的时候，不发起随机接入过程，而能够获取到多个目标小区 的上行定时。本实施例提供了多TAG下UE获取目标小区上行定时的方法，包括两套，其中，方法1：基于网络计算的TA：
源基站请求目标基站给UE分配资源，并指示源小区的UE发送上行资源的配置信息，该配置信息包括以下至少一项：
一个或多个源定时提前组的标识；
一个或多个源定时提前组的小区标识；
一个或多个源定时提前组的UE上行定时提前量；
一个或多个源小区的上行发送资源的配置，该上行发送资源包括PRACH/SRS或其他上行信道的配置；
源基站触发UE在配置的上行资源上发送上行信号。
目标基站测量UE发送的上行信号，并根据该上行信号计算UE可用的一个或多个目标定时提前组的上行定时提前量，并将该目标定时提前组的上行定时提前量信息和源定时提前组的对应关系发送给源基站，该目标定时提前组的上行定时提前量信息和源定时提前组的对应关系信息中包括以下至少一种：
源定时提前组的标识
源定时提前组的小区标识
目标定时提前组的标识
目标定时提前组的小区标识
目标定时提前组的对应的上行定时提前调整信息
定时提前量调整的信号类型；
中接收到的目标基站的上行定时提前量信息和源定时提前组的对应关系信息转发给UE。
根据目标定时提前组的上行定时提前量信息和源定时提前组的对应关系信息，UE至少执行以下一种行为：
确定UE在该目标定时提前组的上行定时提前量。
启动该目标定时提前组的定时提前量超时定时器。
确定UE在该目标定时提前组的上行定时提前量的计算方法包括：
目标定时提前组的上行定时提前量为，网络侧指示的源定时提前组的上行定时提前量。
目标定时提前组的上行定时提前量为，网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
方法2：基于UE计算的TA
源基站请求目标基站给UE分配资源，并指示目标基站UE可用的源上行定时提前信息，该上行定时提前信息包括以下至少一种：
一个或多个源定时提前组的标识；
一个或多个源定时提前组的小区标识；
一个或多个源定时提前组的UE上行定时提前量；
目标基站给源基站发送UE可用的一个或多个源定时提前组和目标定时提前组的对应关系，该源定时提前组和目标定时提前组的对应关系信息中包括以下至少一种：
源定时提前组的标识
源定时提前组的小区标识
目标定时提前组的标识
目标定时提前组的小区标识
源和目标小区间的下行定时偏差
定时提前量调整的信号类型
源基站将接收到的目标基站的一个或多个源定时提前组和目标定时组的对应关系转发给UE。
根据源定时提前组和目标定时提前组的对应关系信息，UE至少执行 以下一种行为：
确定UE在该目标定时提前组的上行定时提前量。
启动该目标定时提前组的定时提前量超时定时器。
确定UE在该目标定时提前组的上行定时提前量的计算方法包括：
目标定时提前组的上行定时提前量为，网络侧指示的源定时提前组的上行定时提前量。
目标定时提前组的上行定时提前量为，网络侧指示的源定时提前组的上行定时提前量加上UE计算获得的上行定时提前调整值。
采用本实施例的方案，可以在UE的移动性过程中，在配置了多个TAG的情况下，可以根据任意一个源TAG的TA值，计算获取得到任意一个目标TAG的TA值，从而增加了网络部署的灵活性，并让UE可以更加灵活的获取更多的TA值。
本实施例还包括多个具体实施例：
具体实施例1：基于网络计算的TA
图12是根据本发明实施例的基于网络计算的TA的示意图，(基于网络计算的TA步骤如图12所示。其中源基站触发UE上报的上行信号还可以是SRS/PUSCH(Physical Uplink Shared Channel；物理上行共享信道)等其他类型的上行信号，由于步骤相同，在此不再重复描述。)
步骤1：源基站在切换请求消息中下指定以下信息(如图转移请求(12Handover Reques)t消息中的TAG Info)：
源小区标识(如sourceCell1)
该源小区所属的源TAG标识(如sourceTAG1)
该源小区的PRACH配置信息
在发送该切换请求消息后，源基站可以通过PDCCH(Physical Downlink Control Channel；物理下行控制信道)order命令触发UE在该源小区的PRACH资源上发送上行信号(preamble)。
步骤2：目标基站在接收到该源小区的PRACH配置后，在该源小区的PRACH资源上检测UE的上行发送信号，并确定该UE在某标TAG(如targetTAG1)上的上行定时调整信息(如TAC)，并将该目标TAG的调整信息和源TAG的对应关系通过切换请求响应消息发送给源基站(如图中转移请求确认(Handover Request Acknowledge)消息中的TA映射信息(TA Mapping Info)，包括：
源TAG标识(如sourceTAG1)
源TAG的上行定时信号类型(如PRACH)
目标TAG标识(如targetTAG1)
目标TAG的上行定时调整信息(如TAC)，该TAC信令可以“0”。
步骤3：源基站将该来自目标基站的切换命令转发给UE(如上图RRC连接配置(RRC Connection Reconfiguration)消息中的TA映射信息(TA Mapping Info)。
步骤4：UE接收到该目标TAG的TA调整信息后，可以计算获取到该TAG的TA信息，并在获得该新TA信息后启动对应的TAT定时器。计算方法如下：
NTA,target＝NTA,source+NTAC
其中：
NTA,source：源sourceTAG1上行发送信号的上行定时提前量，如指定为PRACH信号则为该PRACH信号的上行定时提前量。
NTAC：目标targetTAG1的上行定时调整信息计算获取的上行定时调整量。
NTA,target：目标TAG的上行定时提前量。
具体实施例2：基于UE计算的TA
(该实施例的信令流程图同具体实施例1)
步骤1：源基站在切换请求消息中下指定以下信息(如图12Handover  Request消息中的TAG Info)：
源TAG标识(如sourceTAG1)
该源TAG所属的小区标识(如sourceCell1)
步骤2：目标基站在确定需要UE计算上行定时提前量的TAG和小区，并将该目标TAG的调整信息和源TAG的对应关系通过切换请求响应消息发送给源基站(如上图Handover Request Acknowledge消息中的TA Mapping Info)，包括：
源TAG标识(如sourceTAG1)
该源TAG所属的小区标识(如sourceCell1)
目标TAG标识(如targetTAG1)
该目标TAG所属的小区标识(如targetCell1)
步骤3：源基站将该来自目标基站的切换命令转发给UE(如图12RRCConnectionReconfiguration消息中的TA Mapping Info)。
步骤4：UE接收到该目标TAG的TA调整信息后，可以计算获取到该TAG的TA信息，并在获得该新TA信息后启动对应的TAT定时器。计算方法如下：
NTA,target＝NTA,source+NTA
其中：
NTA,source：源sourceTAG1上行发送信号的上行定时提前量。
NTA：UE计算获取的目标targetTAG1的上行定时调整信息，如指定源小区标识(sourceCell1)和目标小区标识(targetCell1)，则UE根据指定的小区计算上行定时调整信息，否则选取TAG内任意小区计算该上行定时调整信息。
NTA,target：目标targetTAG1的上行定时提前量。该目标targetTAG1的上行定时提前量可以与源sourceTAG1的上行定时提前量相同。
实施例4
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
S2，接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行在用户设备UE的服务基站由源基站转移为目标基站的过程中，源基站指示UE发送上行资源的配置信息给目标基站，其中，配置信息包括：源小区的上行发送资源的配置，上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行接收目标基站根据配置信息计算得到的目标基站的定时提前量TA。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的 步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本实施例提供的一种定时提前量的获取、计算、处理方法、装置及系统，具有以下有益效果：解决了相关技术中在基站切换过程中只能通过随机接入获取目标小区的TA值的技术问题，实现了在不发起随机接入的也能在UE的多个TAG上计算出目标小区的TA值。

Claims (28)

  1. 一种定时提前量的获取方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述源基站指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
    所述源基站接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA。
  2. 根据权利要求1所述的方法，其中，所述配置信息还包括以下至少之一：
    源定时提前组的标识；
    源定时提前组的小区标识；
    源定时提前组的UE上行定时提前量。
  3. 根据权利要求1或2所述的方法，其中，所述源基站指示所述UE发送上行资源的配置信息给所述目标基站包括：
    所述源基站触发所述UE在配置的上行资源上发送上行信号给所述目标基站，其中，所述上行信号携带所述配置信息。
  4. 根据权利要求1所述的方法，其中，在所述源基站接收所述目标基站根据所述配置信息计算得到的所述目标基站的TA之后，所述方法还包括：
    所述源基站将所述TA与源定时提前组的指定信息转发给所述UE，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
  5. 一种定时提前量的计算方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，目标基站接收UE发送的上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
    所述目标基站根据所述配置信息计算所述目标基站的定时提前量TA。
  6. 根据权利要求5所述的方法，其中，所述配置信息携带在上行信号中。
  7. 根据权利要求6所述的方法，其中，根据所述配置信息计算所述目标基站的TA包括：
    所述目标基站测量所述上行信号，并根据所述上行信号计算所述UE可用的目标定时提前组的上行TA。
  8. 根据权利要求7所述的方法，其中，在根据所述上行信号计算所述UE可用的目标定时提前组的上行TA之后，所述方法还包括：
    所述目标基站将所述目标定时提前组的上行TA与源定时提前组的指定信息发送给所述源基站，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
  9. 根据权利要求8所述的方法，其中，所述指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、目标定时提前组的对应的上行定时提前调整信息、定时提前量调整的信号类型。
  10. 一种定时提前量的处理方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述UE根据所述源基站的指示向所述目标基站发送上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所 述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。
  11. 根据权利要求10所述的方法，其中，在所述UE根据所述源基站的指示向所述目标基站发送上行资源的配置信息之后，所述方法还包括：
    所述UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的TA是所述目标基站根据所述配置信息计算得到的；
    所述UE根据所述指定信息执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量、启动目标定时提前组的定时提前量超时定时器。
  12. 根据权利要求11所述的方法，其中，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
  13. 一种定时提前量的获取方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述源基站向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；
    所述源基站接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息。
  14. 根据权利要求13所述的方法，其中，所述目标基站的定时提前量TA信息包括：UE可用的源定时提前组与目标定时提前组的 指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
  15. 根据权利要求14所述的方法，其中，所述指定信息包括以下至少之一：源定时提前组的标识、源定时提前组的小区标识、目标定时提前组的标识、目标定时提前组的小区标识、源和目标小区间的下行定时偏差、定时提前量调整的信号类型。
  16. 根据权利要求14或15所述的方法，其中，在所述源基站接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息之后，所述方法还包括：
    所述源基站将所述指定信息转发给所述UE，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
  17. 一种定时提前量的处理方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述目标基站接收携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息；
    所述目标基站根据所述指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
  18. 一种定时提前量的处理方法，包括：
    在用户设备UE的服务基站由源基站转移为目标基站的过程中，所述UE接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的上行定时提前量TA是所述目标基站根据以下上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；
    所述UE根据所述指定信息执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量、启动目标定时提前组的定时提前量超时定时器。
  19. 根据权利要求18所述的方法，其中，目标定时提前组的上行定时提前量包括以下之一：网络侧指示的源定时提前组的上行定时提前量；网络侧指示的源定时提前组的上行定时提前量加上网络侧指示的上行定时提前调整值。
  20. 一种定时提前量的获取装置，应用在源基站中，包括：
    指示模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
    接收模块，设置为接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA。
  21. 一种定时提前量的计算装置，应用在目标基站中，包括：
    接收模块，设置为在UE的服务基站由源基站转移为目标基站的过程中，接收UE发送的上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
    计算模块，设置为根据所述配置信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器。
  22. 一种定时提前量的处理装置，应用在用户设备UE中，包括：
    发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，根据所述源基站的指示向所述目标基站发送上行资源的配置信息，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS。
  23. 根据权利要求22所述的装置，其中，所述装置还包括：
    接收模块，设置为在所述发送模块根据所述源基站的指示向所述目标基站发送上行资源的配置信息之后，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的TA是所述目标基站根据所述配置信息计算得到的；
    所述UE根据所述指定信息执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量、启动目标定时提前组的定时提前量超时定时器。
  24. 一种定时提前量的获取装置，应用在源基站中，包括：
    发送模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前 组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；
    接收模块，设置为接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息。
  25. 一种定时提前量的处理装置，应用在目标基站中，包括：
    接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；
    发送模块，设置为向所述源基站发送目标基站的上行定时提前量TA与源定时提前组的指定信息。
  26. 一种定时提前量的处理装置，应用在UE中，包括：
    接收模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息，其中，所述目标基站的上行定时提前量TA是所述目标基站根据以下源上行定时提前信息至少之一计算得到的：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上行定时提前量；
    执行模块，设置为根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
  27. 一种定时提前量的获取系统，包括：源基站、目标基站、用户设备UE，
    所述源基站包括：
    指示模块，设置为在用户设备UE的服务基站由源基站转移为目标基站的过程中，指示所述UE发送上行资源的配置信息给所述目标基站，其中，所述配置信息包括：源小区的上行发送资源的配置，所述上行发送资源包括：物理随机接入信道PRACH、探测参考信号SRS；
    第一接收模块，设置为接收所述目标基站根据所述配置信息计算得到的所述目标基站的定时提前量TA；
    所述目标基站包括：
    第二接收模块，设置为接收所述UE发送的所述配置信息；
    计算模块，设置为根据所述配置信息计算所述目标基站的定时提前量TA；
    所述UE包括：
    发送模块，设置为根据所述源基站的指示向所述目标基站发送上行资源的配置信息。
  28. 一种定时提前量的获取系统，包括：源基站、目标基站、用户设备UE，
    所述源基站包括：
    发送模块，设置为向目标基站发送携带UE的上行定时提前信息的指示信息，其中，所述上行定时提前信息包括以下至少之一：源定时提前组的标识；源定时提前组的小区标识；源定时提前组的UE上 行定时提前量；目标定时提前组的标识；目标定时提前组的小区标识；目标定时提前组的UE上行定时提前量；源定时提前组与目标定时提前组的指定信息；源定时提前组小区与目标定时提前组小区的指定信息，其中，所述指定信息用于所述UE执行以下行为至少之一：确定UE在目标定时提前组的上行定时提前量；启动目标定时提前组的定时提前量超时定时器；
    接收模块，设置为接收所述目标基站根据所述指示信息得到的所述目标基站的定时提前量TA信息；
    所述目标基站包括：
    接收模块，设置为接收携带UE可用的源上行定时提前信息的指示信息；
    发送模块，设置为根据所述指示信息计算得到目标基站的上行定时提前量TA与源定时提前组的指定信息并向所述源基站发送所述指定信息；
    所述UE包括：
    接收模块，设置为接收源基站发送的目标基站的上行定时提前量TA与源定时提前组的指定信息；
    执行模块，设置为根据所述指定信息执行以下行为至少之一：确定UE在该目标定时提前组的上行定时提前量、启动该目标定时提前组的定时提前量超时定时器。
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