WO2016127311A1 - 终端建立连接的方法、第二节点、第一终端和第二终端 - Google Patents

终端建立连接的方法、第二节点、第一终端和第二终端 Download PDF

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Publication number
WO2016127311A1
WO2016127311A1 PCT/CN2015/072646 CN2015072646W WO2016127311A1 WO 2016127311 A1 WO2016127311 A1 WO 2016127311A1 CN 2015072646 W CN2015072646 W CN 2015072646W WO 2016127311 A1 WO2016127311 A1 WO 2016127311A1
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WO
WIPO (PCT)
Prior art keywords
node
terminal
access parameter
connection
access
Prior art date
Application number
PCT/CN2015/072646
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English (en)
French (fr)
Inventor
蔺波
张亮亮
王宏
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/072646 priority Critical patent/WO2016127311A1/zh
Priority to CN201580002614.6A priority patent/CN106171010A/zh
Priority to EP15881473.1A priority patent/EP3249974A4/en
Publication of WO2016127311A1 publication Critical patent/WO2016127311A1/zh
Priority to US15/673,648 priority patent/US20170339726A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • 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
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present invention relates to a wireless communication technology, and in particular, to a method for establishing a connection between a terminal, a second node, a first terminal, and a second terminal.
  • the mobile communication system not only pursues the maximum capacity, but also needs a wider coverage, that is, the mobile device coverage is required anywhere the user equipment (User, Equipment, UE) moves.
  • the user equipment User, Equipment, UE
  • a cellular network is used to solve the problem of frequency resource limitation, and the system capacity is increased, and the coverage is extended.
  • Cellular networking is the division of a mobile communication service area into a number of coverage areas with a regular hexagon as the basic geometry, called a cell.
  • a lower power transmitter serves one cell and sets a certain number of UEs in a smaller area.
  • the mobile communication system needs to handover the UE to the neighboring cell, that is, the UE is handed over from the currently connected base station to the base station of the neighboring cell, thereby The communication process is not interrupted.
  • the invention provides, in various aspects, a method for a terminal to establish a connection, a second node, a first terminal, and a second terminal, which are used to reduce a delay generated when a terminal establishes a connection with a node.
  • a first aspect of the present invention provides a method for establishing a connection by a terminal, including:
  • the second terminal is a terminal connected to the first node;
  • the method before the acquiring the first access parameter that is pre-stored corresponding to the first node, the method further includes:
  • the second node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is a terminal connected to the first node;
  • the second node receives the second access parameter reported by the second terminal and is sent by the first node, and stores the second access parameter.
  • the method before the acquiring the first access parameter that is pre-stored corresponding to the first node, the method further includes:
  • the second node sends an instruction to report the second access parameter to the first node, so that the first node sends the instruction for reporting the second access parameter to the second terminal, where the second terminal is Connecting to the terminal of the first node;
  • the second node receives the second access parameter reported by the second terminal and is sent by the first node, and stores the second access parameter.
  • the method before the acquiring the first access parameter that is pre-stored corresponding to the first node, the method further includes:
  • the second node receives the second access parameter sent by the first node, and stores the second access parameter.
  • the method before the acquiring the first access parameter that is pre-stored corresponding to the first node, the method further includes:
  • the second node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is a terminal connected to the first node;
  • the second node receives the second access parameter reported by the second terminal.
  • the second terminal is specifically connected to the second node after being disconnected
  • the terminal of the first node is either connected to the second node and connected to the terminal of the first node.
  • the method of the fifth possible implementation before the acquiring the first access parameter that is pre-stored corresponding to the first node, the method further includes:
  • the second node continuously acquires N second access parameters corresponding to the first node, where N is a positive integer;
  • the second node determines that the values of the N second access parameters are equal, the value of the N second access parameters is used as a final first access parameter corresponding to the first node.
  • the first access parameter includes a timing advance amount and/or a terminal transmission power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • a second aspect of the present invention provides a method for establishing a connection by a terminal, including:
  • the first terminal receives the first access parameter sent by the second node, where the first access parameter is a first access parameter that is pre-stored by the second node and corresponding to the first node, where the first access parameter is According to the second access parameter reported by the second terminal, the second terminal is a terminal connected to the first node, and the first node is a cell adjacent to a cell of the second node.
  • the first terminal is connected to the first node according to the first connection parameter.
  • the second terminal is specifically connected to the terminal of the first node or connected to the second node after being disconnected from the second node. And connected to the terminal of the first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing. Advance and/or terminal transmit power.
  • a third aspect of the present invention provides a method for establishing a connection by a terminal, including:
  • the second terminal receives an instruction for reporting the second access parameter that is sent by the second node that is currently connected, where the second terminal is a terminal that needs to be connected to the first node, and the first node is a cell that is connected to the second node. a control node of an adjacent cell;
  • the second terminal acquires the second access parameter
  • the second terminal is connected to the first node according to the second access parameter, and reports the second access parameter to the second node by using the first node or directly reports to the second node Determining a second access parameter, so that the second node collects the second access parameter to generate a first access parameter, and when the second node determines that the currently connected first terminal needs to establish a connection with the first node, acquiring a pre-stored first access parameter corresponding to the first node, And transmitting, by the first terminal, the first access parameter, so that the first terminal is connected to the first node according to the first access parameter.
  • the second terminal is specifically connected to the terminal of the first node or connected to the second node after being disconnected from the second node. And connected to the terminal of the first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing. Advance and/or terminal transmit power.
  • a fourth aspect of the present invention provides a method for establishing a connection by a terminal, including:
  • the second terminal receives an instruction for reporting the second access parameter sent by the currently connected first node, where the second access parameter is sent by the first node to the second node, and the second node is the a node connected to the second terminal before the second terminal establishes a connection with the first node, where the first node is a control node of a cell adjacent to a cell of the second node;
  • the second terminal acquires the second access parameter
  • the second terminal is specifically connected to the terminal of the first node or connected to the second node after being disconnected from the second node. And connected to the terminal of the first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing. Advance and/or terminal transmit power.
  • a fifth aspect of the present invention provides a second node, including:
  • a first determining unit configured to determine whether the currently connected first terminal needs to establish a connection with the first node, and if the determination result is yes, acquiring a pre-stored first access parameter corresponding to the first node, where
  • the first node is a control node of the cell adjacent to the cell of the second node, the first terminal is currently connected to the second node, and the first access parameter is according to the second connection reported by the second terminal.
  • the second terminal is a terminal connected to the first node;
  • a first sending unit configured to send the first access parameter to the first terminal, so that the first terminal is connected to the first node according to the first access parameter.
  • the method further includes:
  • a second sending unit configured to send, to the second terminal, an instruction to report the second access parameter, where the second terminal is a terminal connected to the first node;
  • the first receiving unit is configured to receive a second access parameter that is sent by the second terminal and is sent by the first node, and store the second access parameter.
  • the method further includes:
  • a second sending unit configured to send, to the first node, an instruction to report the second access parameter, to enable the first node to send the instruction for reporting the second access parameter to the second terminal, where the second The terminal is a terminal connected to the first node;
  • the first receiving unit is configured to receive a second access parameter that is sent by the second terminal and is sent by the first node, and store the second access parameter.
  • the method further includes:
  • a second sending unit configured to send, to the first node, an instruction to report the second access parameter
  • the first receiving unit is configured to receive the second access parameter sent by the first node, and store the second access parameter.
  • the method further includes:
  • a second sending unit configured to send, to the second terminal, an instruction to report the second access parameter, where the second terminal is a terminal connected to the first node;
  • the first receiving unit is configured to receive the second access parameter reported by the second terminal.
  • the determining unit is further configured to:
  • N is a positive integer number
  • the value of the N second access parameters is used as a final first access parameter corresponding to the first node.
  • the first access parameter includes a timing advance amount and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • a sixth aspect of the present invention provides a first terminal, including:
  • a second receiving unit configured to receive a first access parameter that is sent by the second node, where the first access parameter is a first access parameter that is pre-stored by the second node and corresponding to the first node, where a node is a control node of a cell adjacent to the cell of the second node, the first access parameter is calculated according to a second access parameter reported by the second terminal, and the second terminal is connected to the a terminal of the first node;
  • a first connecting unit configured to connect to the first node according to the first connection parameter.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • a seventh aspect of the present invention provides a second terminal, including:
  • a third receiving unit configured to receive, by the second node that is currently connected, an instruction for reporting the second access parameter, where the second terminal is a terminal that needs to be connected to the first node, where the first node is a control node of a cell adjacent to the cell of the two nodes;
  • a first acquiring unit configured to acquire the second access parameter
  • a second connecting unit configured to connect to the first node according to the second access parameter, and report the second access parameter to the second node by using the first node or directly to the first node
  • the second node reports the second access parameter, so that the second node collects the second access parameter to generate a first access parameter, and determines, at the second node, that the currently connected first terminal needs
  • the first node is connected to the first node, the first access parameter corresponding to the first node is obtained, and the first access parameter is sent to the first terminal, so that the first The terminal is connected to the first node according to the first access parameter.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or Terminal transmit power
  • An eighth aspect of the present invention provides a second terminal, including:
  • a fourth receiving unit configured to receive, by the first node that is currently connected, an instruction for reporting a second access parameter, where the second access parameter is sent by the first node to the second node, where the second node is a node that is connected to the second terminal before the second terminal establishes a connection with the first node, where the first node is a control node of a cell adjacent to a cell of the second node;
  • a second acquiring unit configured to acquire the second access parameter
  • a third connection unit configured to send, by using the first node, the second access parameter to the second node, or the second terminal directly sends the second access parameter to the second node that is currently connected
  • the second node is configured to collect the second access parameter to generate a first access parameter, and obtain, when the second node determines that the currently connected first terminal needs to establish a connection with the first node, Pre-storing the first access parameter corresponding to the first node, and sending the first access parameter to the first terminal, so that the first terminal is connected to the first access parameter according to the first access parameter The first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • a ninth aspect of the present invention provides a second node, including: at least one first processor, and a first memory, where the first memory is configured to store executable program code, wherein the first processor reads The executable program code stored in the first memory to run a program corresponding to the executable program code for:
  • the first terminal currently connected needs to establish a connection with the first node, and if the determination result is yes, acquiring a pre-stored first access parameter corresponding to the first node, where the first node is a control node of the cell adjacent to the cell of the second node, where the first terminal is currently connected to the second node, and the first access parameter is calculated according to the second access parameter reported by the second terminal,
  • the second terminal is a terminal connected to the first node;
  • a tenth aspect of the present invention provides a first terminal, including: at least one second processor, and a second memory, where the second memory is configured to store executable program code, where the The second processor runs a program corresponding to the executable program code by reading executable program code stored in the second memory for:
  • the first access parameter is a first access parameter that is pre-stored by the second node and corresponding to the first node, where the first node is the second a control node of the cell adjacent to the cell of the node, the first access parameter is calculated according to the second access parameter reported by the second terminal, and the second terminal is a terminal connected to the first node;
  • An eleventh aspect of the present invention provides a second terminal, including: at least one third processor, and a third memory, wherein the third memory is configured to store executable program code, wherein the third processor reads Executing program code stored in the third memory to execute a program corresponding to the executable program code for:
  • the first node is a control node of a cell adjacent to the cell of the second node, and reports to the second node by using the first node
  • the second access parameter is directly reported to the second node, so that the second node collects the second access parameter to generate a first access parameter
  • the first access parameter corresponding to the first node is obtained, and is sent to the first terminal. Determining a first access parameter, so that the first terminal is connected to the first node according to the first access parameter.
  • a twelfth aspect of the present invention provides a second terminal, comprising: at least one fourth processor, and a fourth memory, wherein the fourth memory is configured to store executable program code, wherein the fourth processor reads Executing program code stored in the fourth memory to execute a program corresponding to the executable program code for:
  • the second terminal receives an instruction for reporting the second access parameter sent by the currently connected first node, where the second access parameter is sent by the first node to the second node, and the second node is the a node connected to the second terminal before the second terminal establishes a connection with the first node, where the first node is a control node of a cell adjacent to a cell of the second node;
  • the second terminal acquires the second access parameter
  • the method for establishing a connection between a terminal, the second node, the first terminal, and the second terminal provided by the present invention generates a first access parameter by using a second access parameter in advance, and stores the first access parameter, and then needs to be stored in the first terminal that is currently connected.
  • the first access parameter corresponding to the first node is obtained and directly delivered to the first terminal for use, so that the first terminal acquires the first access parameter
  • the delay which in turn reduces the delay generated by the terminal when changing the cell, improves the user experience.
  • FIG. 1A is a schematic flowchart of a method for establishing a connection by a terminal according to an embodiment of the invention
  • FIG. 1B is a schematic flowchart of a method for establishing a connection by a terminal according to another embodiment of the present invention
  • FIG. 2 is a signaling diagram of a method for establishing a connection by a terminal according to still another embodiment of the present invention
  • FIG. 3 is a signaling diagram of a method for establishing a connection by a terminal according to still another embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a method for establishing a connection by a terminal according to another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for establishing a connection by a terminal according to still another embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of establishing a connection in a terminal in a dual connectivity scenario according to another embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of a method for establishing a connection by a terminal according to another embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of a method for establishing a connection by a terminal according to still another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a method for establishing a connection by a terminal according to still another embodiment of the present invention.
  • FIG. 10A is a schematic structural diagram of a second node according to another embodiment of the present invention.
  • FIG. 10B is a schematic structural diagram of a second node according to still another embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a second node according to still another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a first terminal according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a second terminal according to still another embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a second terminal according to still another embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a second node according to another embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a first terminal according to still another embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a second terminal according to still another embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a second terminal according to another embodiment of the present invention.
  • This embodiment provides a method for establishing a connection between a terminal, where a connection is established between the terminal and the node.
  • the nodes in the following embodiments may be specifically a control node, such as a base station, and the like, and the base station is connected to the terminal, such as an evolved Node-B (eNB, evolved Node B), a Node-B (NB, Node B), and a base transceiver.
  • eNB evolved Node-B
  • NB Node-B
  • Node B Node-B
  • FIG. 1A is a schematic flowchart diagram of a method for establishing a connection according to the terminal according to the embodiment.
  • the execution body of this embodiment is the second node.
  • Step 110 The second node determines whether the first terminal that is currently connected needs to establish a connection with the first node. If the determination result is yes, the first access parameter corresponding to the first node that is stored in advance is obtained.
  • the first node is a control node of a cell adjacent to the cell of the second node, and the first terminal is The terminal is currently connected to the second node, the first access parameter is calculated according to the first access parameter reported by the second terminal, and the second terminal is the terminal connected to the first node.
  • the first access parameter of this embodiment includes Timing Advance (TA) and/or terminal transmit power.
  • the second access parameter also includes Timing Advance (TA) and/or terminal transmit power. That is, when the second access parameter is the timing advance amount, the first access parameter is also the timing advance amount, and when the second access parameter is the terminal transmit power, the first access parameter is also the terminal transmit power, when the second access When the input parameter includes both the timing advance and the terminal transmit power, the first access parameter also includes the timing advance and the terminal transmit power.
  • the terminal transmit power may be a range, and a first access parameter corresponding to the terminal transmit power in a certain range.
  • the terminal When the terminal interacts with the base station, the terminal needs to continuously adjust the power, for example, gradually increase the power to determine whether the base station can receive the information sent by the terminal, and when determining that the base station can receive the information sent by the terminal, The power at the time is determined as the terminal transmit power.
  • Step 120 The second node sends the first access parameter to the first terminal, so that the first terminal connects to the first node according to the first access parameter.
  • the first access parameter may be included in an RRC connection reconfiguration message (RRCConnectionReconfiguration), where RRC is a radio resource control, and the English is called a Radio Resource Control.
  • RRCConnectionReconfiguration RRC connection reconfiguration message
  • the second access parameter is pre-stated to generate a first access parameter and stored, and then the first terminal connected to the first node needs to be connected to the first node.
  • the pre-stored first access parameter corresponding to a node is directly delivered to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible, thereby reducing the terminal when the cell is transformed. The delay has improved the user experience.
  • FIG. 1B is a schematic flowchart diagram of a method for establishing a connection according to the terminal according to the embodiment.
  • Step 101 The second node determines whether the first terminal currently connected needs to be switched to the first node, and if the determination result is yes, the first access parameter corresponding to the first node that is stored in advance is obtained, where the first node is The control node of the cell adjacent to the cell of the two node, the first terminal is currently connected Two nodes.
  • the first access parameter is calculated according to the second access parameter reported by the second terminal, and the second terminal is a terminal that is switched from the second node to the first node.
  • the number of the second terminals may be one or more.
  • the second node may directly use the latest second access parameter reported by the second terminal as the first access parameter corresponding to the first node, or may obtain the M second access parameters after the M second access parameters.
  • the access parameters are averaged, and a second access parameter with the smallest absolute value of the difference between the average values is selected as the first access parameter corresponding to the first node acquired by the second node, if the average value is If there are multiple second access parameters with the smallest absolute value of the difference, the second access parameter that is newly reported is selected as the first access parameter corresponding to the first node acquired by the second node.
  • M is a positive integer.
  • the method further includes:
  • the second node continuously acquires N second access parameters corresponding to the first node, where N is a positive integer;
  • the second node determines that the values of the N second access parameters are equal, the value of the N second access parameters is used as the final first access parameter corresponding to the first node.
  • the second node may use the second access parameter as the final first access parameter corresponding to the first node after the value of the second access parameter is stabilized. After acquiring the second N access parameters that are the same as the first node, the second node may store the second access parameter as the first first access parameter corresponding to the first node. And applied in the follow-up process.
  • the second node may also use the other method to calculate the first access parameter according to the second access parameter, which may be set according to actual needs, and details are not described herein again.
  • the second node determines whether the first terminal connected to the second node needs to be switched, and may be determined according to the measurement report reported by the first terminal or according to the RSRP (Reference Signal Receiving Power) of the first terminal, where the technology belongs to The prior art is not described here. It is of course possible to determine whether the first terminal needs to be switched in other manners, which is not limited herein.
  • RSRP Reference Signal Receiving Power
  • a correspondence table between the first access parameter and the first node may be preset, and the correspondence table may be preset in the second node, or may be set in another memory, as long as the second node needs to be used. Can be obtained at any time, depending on actual needs Settings are not limited here.
  • the first access parameter corresponding to the first node may be obtained according to the foregoing correspondence table.
  • the first access parameter of this embodiment includes Timing Advance (TA) and/or terminal transmit power.
  • the terminal transmit power may be a range, and a first access parameter corresponding to the terminal transmit power in a certain range.
  • the terminal needs to continuously adjust the power to determine whether the base station can receive the information sent by the terminal.
  • the terminal determines the power at the current time as the terminal transmit power. .
  • Step 102 The second node sends the first access parameter to the first terminal, so that the first terminal switches to the first node according to the first access parameter.
  • the first access parameter may be included in an RRC connection reconfiguration message.
  • the second node sends the obtained first access parameter to the first terminal to be switched, and the first terminal receives the first access parameter, and then the first access parameter is used to switch to the first access parameter.
  • a node that is, the first terminal disconnects from the second node and connects with the first node.
  • the second access parameter is pre-stated to generate a first access parameter and stored, and then the first terminal that is currently connected needs to be switched to the first node, and then acquired
  • the first access parameter that is pre-stored by the node is directly delivered to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible, and the user experience is improved.
  • This embodiment further supplements the method for establishing a connection between the terminals in the foregoing embodiment.
  • the method before step 101, the method further includes:
  • the second node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is a terminal connected to the first node from the second node;
  • the second node receives the second access parameter reported by the second terminal sent by the first node, and stores the second access parameter.
  • the timing advance amount is generated by the first node according to the random access sequence sent by the second terminal. After the first node generates the timing advance, the first terminal sends the timing advance to the second terminal, so that the second terminal switches to the first node according to the timing advance.
  • the second access parameter is transmit power
  • the second access parameter is generated by the second terminal
  • the terminal transmit power P can be calculated according to the following formula:
  • P preambleInitialReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_TRANSMISSION_COUNTER–1)*powerRampingStep, where preambleInitialReceivedTargetPower is the initial transmit power, DELTA_PREAMBLE is the power compensation, PREAMBLE_TRANSMISSION_COUNTER is the power climb number, and powerRampingStep is the power climb step.
  • This method belongs to the prior art, and the specific process will not be described again.
  • the second terminal may select to report only the power climb times, and the second node determines the terminal transmit power according to the power climb number and the preset initial transmit power, power compensation, and power climbing step.
  • the transmit power, power compensation, and power ramping steps are configured by the base station to the terminal.
  • the parameters configured by the same base station to the terminals in the same cell are the same, and the parameters between different cells may be different.
  • the second terminal may further report a PHR (Power Headroom Report), so that the second node acquires the corresponding terminal transmit power according to the PHR, and the second node learns the maximum amount of the terminal transmit power, minus the PHR carry
  • the power headroom can be used to obtain the terminal transmit power, and the specific process will not be described again.
  • FIG. 2 it is a signaling diagram of a method of establishing a connection according to the terminal of the present embodiment.
  • Step 201 The second node 210 determines that the second terminal 220 needs to switch to the first node 230, and sends a handover request corresponding to the second terminal 220 to the first node 230.
  • the second node 210 determines the first node 230 for the second terminal 220 according to the measurement report of the second terminal 220 and the RRM (Radio Resource Management) algorithm, and sets the context information of the second terminal 220.
  • the first node 230 is sent with the handover request.
  • step 202 the first node 230 confirms the handover request.
  • the first node 230 confirms that the handover request indicates that the first node 230 is ready for the upcoming handover of the second terminal 210, and simultaneously allocates the C-RNTI (Cell Radio Network Temporary Identifier) pre-assigned to the second terminal 210. And other parameters are returned to the second node 210 in the confirmation message of the handover request. Upon receipt of the acknowledgment message for the handover request, the second node 210 is ready to forward the packet data to the first node 230. Confirm switching request The technology is prior art and will not be described here.
  • C-RNTI Cell Radio Network Temporary Identifier
  • the second node 210 sends a handover command to the second terminal 220, indicating that the second terminal 220 performs the handover, and the handover command includes an instruction that indicates that the second terminal 220 reports the second access parameter.
  • the handover command refers to an RRC connection reconfiguration message.
  • Step 204 After receiving the handover command sent by the second node 210, the second terminal 220 obtains uplink synchronization and downlink synchronization with the first node 230, and acquires a second access parameter.
  • the second access parameter indicates the timing advance
  • the second access parameter is the timing advance amount acquired by the second terminal 220 from the first node 230
  • the second access parameter indicates the terminal transmit power.
  • the second access parameter is a second access parameter obtained by the second terminal 220 according to the constant adjustment power in the foregoing embodiment.
  • Step 205 The second terminal 220 sends a handover confirmation command to the first node 230, where the handover confirmation command indicates that the second terminal 220 has completed the handover.
  • Step 206 The second terminal 220 reports the second access parameter to the first node 230.
  • the second access parameter reported in this step may also be carried in the handover confirmation command in step 205.
  • the second access parameter reported in the step may be carried in a message that the RRC connection reconfiguration is completed. Since the message of the RRC connection reconfiguration completion is sent just after the handover is completed, and additional information is not required to be included in this message.
  • Step 207 After receiving the second access parameter reported by the second terminal 220, the first node 230 sends the second access parameter to the second node 210 through the X2 interface.
  • the second access parameter reported in this step may also be carried in the message of the User Equipment Context release, because the second terminal 220 has completed the handover process.
  • Step 208 After receiving the second access parameter sent by the first node 230, the second node 210 stores the second access parameter for subsequent statistical use.
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • the second node 210 reports the second access.
  • the command of the parameter is directly sent to the second terminal 220, so that after receiving the instruction for reporting the second access parameter, the second terminal 220 reports the second node 210 to the second node 210, and the second node 210 receives the command.
  • the second access parameter is stored for subsequent statistics of the first access parameter to avoid that the first terminal switching from the second node 210 to the first node 230 generates an unnecessary delay due to obtaining the first access parameter.
  • This embodiment further supplements the method for establishing a connection between the terminal in the first embodiment and the second embodiment.
  • the method before step 101, the method further includes:
  • the second node sends an instruction to report the second access parameter to the first node, so that the first node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is connected to the first node from the second node.
  • the second node receives the second access parameter reported by the second terminal sent by the first node, and stores the second access parameter.
  • the second access parameter is a timing advance
  • the second access parameter is generated by the first node according to the random access sequence sent by the second terminal when the second terminal performs uplink synchronization with the first node, and the second terminal
  • the first node is connected to the second node before performing uplink synchronization.
  • the manner in which the terminal transmit power is generated is the same as that in the third embodiment, and details are not described herein again.
  • FIG. 3 it is a schematic flowchart of a method for establishing a connection according to the terminal according to the embodiment.
  • the second node 310 determines that the second terminal 320 needs to be handed over to the first node 330, and sends a handover request corresponding to the second terminal 320 to the first node 330, and the handover request may include indicating that the first node 330 sends
  • the second access parameter is sent by the second terminal 320 to the first node 330.
  • the first node 330 may send the second access parameter to the second node 310 after the handover of the second terminal 320 is completed.
  • step 302 the first node 330 confirms the handover request.
  • the first node 330 confirms that the handover request indicates that the first node 330 is preparing for the upcoming handover of the second terminal 320, and simultaneously allocates the C-RNTI (Cell Radio Network Temporary Identifier) pre-assigned to the second terminal 320. ) and other parameters in The confirmation message of the handover request is returned to the second node 310. Upon receipt of the acknowledgment message for the handover request, the second node 310 is ready to forward the packet data to the first node 330.
  • C-RNTI Cell Radio Network Temporary Identifier
  • Step 303 The second node 310 sends a handover command to the second terminal 320, instructing the second terminal 320 to perform handover.
  • Step 304 After receiving the handover command sent by the second node 310, the second terminal 320 obtains uplink synchronization and downlink synchronization with the first node 320, and acquires a second access parameter.
  • the second access parameter when the second access parameter indicates the timing advance amount, the second access parameter is the timing advance amount acquired by the second terminal 320 from the first node 330, and when the second access parameter indicates the terminal transmit power.
  • the second access parameter is a second access parameter obtained by the second terminal 320 according to the constant adjustment power in the foregoing embodiment.
  • Step 305 The second terminal 320 sends a handover confirmation command to the first node 330, where the handover confirmation command indicates that the second terminal 320 has completed the handover.
  • Step 306 After receiving the handover confirmation command sent by the second terminal 320, the first node 330 sends an instruction to report the second access parameter to the second terminal, to instruct the second terminal to report the second access parameter.
  • Step 307 After receiving the instruction sent by the first node 330 to report the second access parameter, the second terminal 320 reports the second access parameter when the handover is performed.
  • Step 308 After receiving the second access parameter reported by the second terminal 320, the first node 330 sends the second access parameter to the second node 310 through the X2 interface.
  • the second access parameter reported in this step may also be carried in the message of the UE Context release, because the second terminal 320 has completed the handover process.
  • Step 309 After receiving the second access parameter sent by the first node 330, the second node 310 stores the second access parameter for subsequent statistical use.
  • the second node 310 sends an instruction to the first node 330 to report the second access parameter, so that the first node 330 instructs the second terminal 320 to report the second access according to the instruction. And sending the parameter to the second node for storage, so that the second node collects the first access parameter, so that the subsequent other terminal needs to switch from the second node to the first node. Use to minimize the delay in obtaining the first access parameter, improve the connection establishment efficiency, and improve the user experience.
  • This embodiment provides a method for establishing a connection by a terminal, and a method for establishing a connection by the terminal is a main node.
  • FIG. 4 it is a schematic flowchart of a method for establishing a connection according to the terminal according to the embodiment.
  • the scenario in this embodiment is a dual connectivity scenario, that is, after the first terminal is connected to one primary node, it can also be connected with other nodes to increase data transmission, and other nodes are referred to as secondary nodes, that is, the first terminal can be performed with the primary node.
  • the transmission of information can also be carried out with the secondary node.
  • the connection and release connections are controlled by the master node, which is only responsible for data transmission. That is, the primary node and the first secondary node in this embodiment respectively correspond to the second node and the first node.
  • Step 401 The master node determines whether the first terminal that is currently connected needs to be connected to the first secondary node, and if the determination result is yes, the first access parameter corresponding to the first secondary node that is stored in advance is obtained, the first access The parameter is calculated according to the second access parameter reported by the second terminal, and the second terminal is a terminal that is connected to the primary node and needs to be connected to the first secondary node.
  • the number of the second terminals may be one or more.
  • the master node may directly use the latest second access parameter reported by the second terminal as the first access parameter corresponding to the first secondary node, or may obtain the M second access parameters after acquiring the M second access parameters.
  • the access parameters are averaged, and a second access parameter with the smallest absolute value of the difference between the average values is selected as the first access parameter corresponding to the first secondary node acquired by the primary node, if the average value is If there are multiple second access parameters with the smallest absolute value of the difference, the second access parameter that is newly reported is selected as the first access parameter that is acquired by the primary node and corresponding to the first secondary node;
  • the second access parameter that is reported to be the most frequently reported in the time period is used as the first access parameter corresponding to the first secondary node acquired by the primary node, or a certain number of second access parameters are selected.
  • the second access parameter with the highest number of occurrences is used as the first access parameter corresponding to the first secondary node acquired by the primary node, and when there are multiple second access parameters with the most occurrences, the latest reported number of occurrences is used.
  • the primary node may also use the other method to calculate the first access parameter according to the second access parameter, which may be set according to actual needs, and details are not described herein again.
  • M is a positive integer.
  • Whether the first terminal needs to be connected to the first secondary node includes at least the following two situations: in the first case, the first terminal is currently only connected to the primary node, and the secondary node is not connected, and the primary node needs to be connected and the connection is added to the first
  • the second node is that the first terminal is currently connected to the primary node and the second secondary node, and needs to remain connected to the primary node and disconnected from the second secondary node to connect to the first secondary node.
  • the primary node, the first secondary node, and the second secondary node in this embodiment are all nodes for wireless communication, such as a base station.
  • the primary node determines whether the first terminal connected to the first secondary node needs to change the connection, and may be based on the measurement report reported by the first terminal or the RSRP (Reference Signal Receiving Power) of the first terminal.
  • RSRP Reference Signal Receiving Power
  • a correspondence relationship table with a first access parameter of the first secondary node may be preset, and the correspondence relationship table may be preset in the primary node, or may be set in another memory, as long as the primary node needs to be used. It can be obtained, and can be set according to actual needs, and is not limited herein.
  • the master node determines that the first terminal needs to be connected to the first secondary node, the first access parameter corresponding to the first secondary node may be obtained according to the foregoing correspondence table.
  • the first access parameter of this embodiment includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • Step 402 The primary node sends a first access parameter to the first terminal, so that the first terminal connects to the first secondary node according to the first access parameter.
  • the first access parameter may be included in an RRC connection reconfiguration message.
  • the master node directly sends the obtained first access parameter to the first terminal to be converted/added to the secondary node, and the first terminal can use the first access by receiving the first access parameter.
  • the parameter is connected to the first secondary node.
  • the method further includes:
  • the master node continuously acquires N second access parameters corresponding to the first secondary node, where N is a positive integer;
  • the master node determines that the values of the N second access parameters are equal, the value of the N second access parameters is used as the first first access parameter corresponding to the first secondary node.
  • the primary node may use the second access parameter as the final first access parameter corresponding to the first secondary node after the value of the second access parameter is stabilized.
  • the master node may perform the second access parameter as the first first access parameter corresponding to the first secondary node. Store and apply in subsequent processes.
  • the second access parameter is pre-stated to generate a first access parameter and stored, and then the first terminal connected to the first secondary node is acquired and first The pre-stored first access parameter corresponding to the secondary node is directly delivered to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible, and the user experience is improved.
  • This embodiment further supplements the method for establishing a connection between the terminals in the foregoing embodiment.
  • the method before determining whether the currently connected first terminal needs to be connected to the first secondary node, the method further includes:
  • the master node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is a terminal to be connected to the first secondary node;
  • the master node receives the second access parameter reported by the second terminal.
  • the sending, by the second terminal, an instruction to report the second access parameter may be included in the RRC connection reconfiguration message.
  • the second access parameter is a timing advance
  • the second access parameter is generated by the first secondary node according to the random access sequence sent by the second terminal when the second terminal performs uplink synchronization with the first secondary node, if
  • the second access parameter is the terminal transmit power, which is consistent with the manner in which the terminal transmit power is generated in the foregoing embodiment, and details are not described herein again.
  • FIG. 5 a schematic diagram of a process for establishing a connection in a terminal in a dual connectivity scenario according to the present embodiment is described by taking the second case as an example.
  • the second terminal is connected to two nodes, one is a primary node, one is a second secondary node, and the node to which the second terminal needs to be connected is the first secondary node.
  • the specific process is as follows:
  • Step 501 the master node determines that the second terminal needs to change the connection from the second secondary node to the first secondary node, and sends an RRC connection reconfiguration message to the second terminal, instructing the second terminal to perform the transformation connection.
  • the RRC connection reconfiguration message includes signaling indicating that the second terminal reports the second access parameter.
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • Step 502 The second terminal acquires uplink synchronization and downlink synchronization with the first secondary node, and sends the acquired second access parameter to the primary node, where the primary node stores the second access parameter corresponding to the first secondary node.
  • Step 503 The second terminal sends a connection confirmation command to the primary node, where the connection confirmation command indicates that the second terminal has completed the connection.
  • the master node generates a first access parameter by collecting a second access parameter obtained when the second terminal connects from the second secondary node to the first secondary node, and stores the When the first terminal needs to connect from the second secondary node to the first secondary node, the first access parameter is directly sent to the first terminal for use, so as to avoid delay caused by the first terminal acquiring the first access parameter. Improve the connection efficiency of the terminal and improve the user experience.
  • This embodiment further clarifies the method for establishing a connection between the terminals in the fifth embodiment.
  • the method before acquiring the first access parameter corresponding to the first node that is stored in advance, the method further includes:
  • the master node sends an instruction to report the second access parameter to the first secondary node
  • the sending the instruction for reporting the second access parameter may be included in the message of adding a secondary node request (SeNB Addition Request).
  • FIG. 6 a schematic diagram of a process for establishing a connection in a terminal in a dual connectivity scenario according to the present embodiment is described by taking the second case as an example.
  • the second terminal is connected to two nodes, one is a primary node, one is a second secondary node, and the node to which the second terminal needs to be connected is the first secondary node.
  • the specific process is as follows:
  • Step 601 The master node determines that the second terminal needs to perform the RRC (Radio Resource Control) connection reconfiguration message to the second terminal when the second terminal needs to be connected to the first secondary node, and the second terminal is instructed to perform the second terminal. Transform the connection and send the transmission to the first secondary node The second access parameter is commanded.
  • RRC Radio Resource Control
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • Step 602 The second terminal acquires uplink synchronization and downlink synchronization with the first secondary node, and sends the obtained second access parameter to the first secondary node.
  • the second access parameter may include an identifier of the second terminal and/or an identifier of the primary node.
  • Step 603 The first secondary node sends a second access parameter to the primary node, where the primary node stores a second access parameter corresponding to the first secondary node.
  • Step 604 The second terminal sends a connection confirmation command to the primary node, where the connection confirmation command indicates that the second terminal has completed the connection.
  • the RRC connection reconfiguration message may include signaling that indicates that the second terminal reports the second access parameter, so that after the second terminal reports the second access parameter to the first node, the first node may be triggered.
  • the master node collects the second access parameter obtained when the second terminal connects from the second secondary node to the first secondary node, and generates a first access parameter for storage, so as to The subsequent first terminal needs to send the first access parameter to the first terminal to be used when the second secondary node is connected to the first secondary node, so as to avoid delay caused by the first terminal acquiring the first access parameter, and improve
  • the terminal establishes connection efficiency and improves the user experience.
  • the primary node may also directly acquire the generated timing advance from the first secondary node.
  • the method before acquiring the first access parameter that is pre-stored corresponding to the first secondary node, the method further includes:
  • the master node may not need to instruct the second terminal to report, but is directly sent by the first secondary node to the master node, which can save the operation of information interaction and reduce the network burden.
  • the second terminal of the above embodiments is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node.
  • the embodiment provides a method for establishing a connection between a terminal, and the method for establishing a connection is the first terminal, that is, the first terminal in the foregoing embodiment.
  • FIG. 7 is a schematic flowchart diagram of a method for establishing a connection according to the terminal according to the embodiment.
  • Step 701 The first terminal receives the first access parameter sent by the second node, where the first access parameter is a first access parameter that is pre-stored by the second node and is corresponding to the first node, where the first access parameter is According to the second access parameter reported by the second terminal, the second terminal is a terminal connected to the first node, and the first node is a control node of a cell adjacent to the cell of the second node.
  • the first access parameter of this embodiment includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • the terminal transmit power may be a range, and a first access parameter corresponding to the terminal transmit power in a certain range.
  • the terminal needs to continuously adjust the power, for example, gradually increase the power to determine whether the base station can receive the information sent by the terminal, and when determining that the base station can receive the information sent by the terminal, The power at the time is determined as the terminal transmit power.
  • the first terminal is currently connected to the second node, and if the second node determines that the first terminal needs to establish a connection with the first node, the first access parameter corresponding to the first node that is pre-stored is delivered to the first terminal. .
  • the first access parameter may be included in an RRC connection reconfiguration message. That is, the second node determines that the first terminal needs to establish a connection with the first node, and then sends an RRC connection reconfiguration message to the first terminal, where the RRC connection reconfiguration message includes a pre-stored first connection corresponding to the first node. Enter the parameters.
  • the first access parameter may also be sent by the second node separately, for example, after sending the RRC connection reconfiguration message.
  • the second terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node, which is specifically the same as described in the foregoing embodiment. This will not be repeated here.
  • Step 702 The first terminal is connected to the first node according to the first connection parameter.
  • the first terminal After receiving the first connection parameter, the first terminal may connect to the first node according to the first connection parameter.
  • the second node obtains the second connection by pre-stating
  • the parameter is generated to generate the first access parameter and is stored, and then the first access parameter corresponding to the first node is obtained and directly sent to the first node that is connected to the first node.
  • the first terminal utilizes, so that the delay caused by the first terminal acquiring the first access parameter is avoided as much as possible, thereby reducing the delay generated by the terminal when the cell is changed, and improving the user experience.
  • the embodiment provides a method for a terminal to establish a connection.
  • the execution entity of this embodiment is a second terminal.
  • FIG. 8 is a schematic flowchart diagram of a method for establishing a connection according to the terminal according to the embodiment.
  • Step 801 The second terminal receives an instruction for reporting the second access parameter sent by the currently connected second node, where the second terminal is a terminal that needs to be connected to the first node.
  • the second terminal in this embodiment is specifically connected to the terminal connected to the first node or connected to the second node and connected to the terminal of the first node after disconnecting from the second node, and the specific process is consistent with the foregoing embodiment. No longer.
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • Step 802 The second terminal acquires the second access parameter.
  • Step 803 The second terminal is connected to the first node according to the second access parameter, where the first node is a control node of the cell adjacent to the cell of the second node, and reports the second access to the second node by using the first node.
  • the parameter directly reports the second access parameter to the second node, so that the second node collects the second access parameter to generate the first access parameter, and determines, at the second node, that the currently connected first terminal needs to be the first
  • the node establishes the connection the first access parameter corresponding to the first node is obtained, and the first access parameter is sent to the first terminal, so that the first terminal is connected to the first node according to the first access parameter.
  • the process of the second terminal reporting the second access parameter to the second node by the first node or the second terminal directly reporting the second access parameter to the second node is consistent with the foregoing embodiment, and details are not described herein again.
  • the process of the first terminal being connected to the first node according to the first access parameter is also consistent with the foregoing embodiment, and details are not described herein again.
  • the first access parameter includes a timing advance and/or a terminal transmit power.
  • the second terminal sends the second access parameter to the second node for the second node to collect the second access parameter to generate the first access parameter, and stores the subsequent access process.
  • the second node obtains the pre-stated first access parameter corresponding to the first node, and directly delivers the first access parameter to the first terminal for use, so that the first terminal is connected to the first terminal, so that The delay caused by the first terminal acquiring the first access parameter is avoided as much as possible, thereby reducing the delay generated when the terminal changes the cell, and improving the user experience.
  • the embodiment provides a method for a terminal to establish a connection.
  • the execution entity of this embodiment is a second terminal.
  • FIG. 9 is a schematic flowchart diagram of a method for establishing a connection according to the terminal according to the embodiment.
  • Step 901 The second terminal receives an instruction for reporting the second access parameter sent by the currently connected first node, where the second access parameter is sent by the first node to the second node, and the second node is the second terminal and the first The node connected to the second terminal before the node establishes the connection, and the first node is a control node of the cell adjacent to the cell of the second node.
  • the second terminal is specifically connected to the terminal connected to the first node or connected to the second node or connected to the second node, and the specific process is the same as that in the foregoing embodiment, and details are not described herein again.
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • Step 902 The second terminal acquires the second access parameter.
  • Step 903 The second terminal sends the second access parameter to the second node by using the first node, or the second terminal directly sends the second access parameter to the currently connected second node, so that the second node collects the second access parameter.
  • the first access parameter is generated, and when the second node determines that the currently connected first terminal needs to establish a connection with the first node, the first access parameter corresponding to the first node that is stored in advance is obtained, to the first terminal. And transmitting, by the first access parameter, the first terminal is connected to the first node according to the first access parameter.
  • the process of reporting the second access parameter to the second node by using the first node is consistent with the foregoing embodiment, and details are not described herein again.
  • the process of the first terminal being connected to the first node according to the first access parameter is also consistent with the foregoing embodiment, and details are not described herein again.
  • the first access parameter includes a timing advance and/or a terminal transmit power.
  • the second terminal sends the second access parameter to the second node for the second node to collect the second access parameter to generate the first access parameter, and stores the subsequent access process.
  • the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the acquisition is avoided as much as possible.
  • the delay caused by the first access parameter thereby reducing the delay generated by the terminal when changing the cell, improves the user experience.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • the embodiment provides a second node, where the second node is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 10A it is a schematic structural diagram of a second node according to the present embodiment.
  • the second node includes a first determining unit 115 and a first transmitting unit 116.
  • the first determining unit 115 is configured to determine whether the first terminal that is currently connected needs to establish a connection with the first node, and if the determination result is yes, obtain the first access parameter that is stored in advance and corresponding to the first node, where The node is a control node of the cell adjacent to the cell of the second node, the first terminal is currently connected to the second node, the first access parameter is calculated according to the second access parameter reported by the second terminal, and the second terminal is connected.
  • the first sending unit 116 is configured to send the first access parameter acquired by the first determining unit 115 to the first terminal, so that the first terminal connects to the first node according to the first access parameter. .
  • the first access parameter and the second access parameter of this embodiment both include Timing Advance (TA) and/or terminal transmit power.
  • the terminal transmit power may be a range, and a first access parameter corresponding to the terminal transmit power in a certain range.
  • the terminal needs to continuously adjust the power, for example, gradually increase the power to determine whether the base station can receive the information sent by the terminal, and when determining that the base station can receive the information sent by the terminal, The power at the time is determined as the terminal transmit power.
  • the first access parameter may be included in an RRC connection reconfiguration message.
  • Second end The terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal connected to the second node and connected to the first node
  • the first access parameter is consistent with the foregoing embodiment according to the second access parameter reported by the second terminal, and is not described here.
  • the second node of this embodiment further includes a determining unit 114.
  • the determining unit 114 is configured to:
  • N is a positive integer
  • the values of the N second access parameters are used as the final first access parameter corresponding to the first node.
  • the specific operation process of the determining unit 114 is the same as that of the second embodiment, and details are not described herein again.
  • the second access parameter is pre-stated to generate the first access parameter and stored, and then the first node is connected to the first node when the currently connected first terminal needs to be connected to the first node.
  • the corresponding pre-statistic first access parameter is directly sent to the first terminal for use, so that the delay caused by the first terminal acquiring the first access parameter is avoided as much as possible, thereby reducing the terminal when the cell is changed. The resulting delay increases the user experience.
  • FIG. 11 it is a schematic structural diagram of a second node according to this embodiment.
  • the second node of the present embodiment includes a second transmitting unit 117 and a first receiving unit 118 in addition to the first determining unit 115 and the first transmitting unit 116 as described in the eleventh embodiment.
  • the second sending unit 117 is configured to send, to the second terminal, an instruction to report the second access parameter, where the second terminal is a terminal connected to the first node, and the first receiving unit 118 is configured to receive the second The second access parameter reported by the terminal, and storing the second access parameter.
  • the first receiving unit 118 is connected to the determining unit 114 as shown in FIG.
  • the second terminal is a terminal that is switched to the first node, that is, a terminal that is disconnected from the second node and establishes a connection with the first node
  • the second node needs to be disconnected from the second node in the second terminal.
  • the instruction for reporting the second access parameter is sent before; if the second terminal is connected to the first node in the dual connectivity scenario, but is not disconnected from the second node, the second node may go to the second at any time.
  • the terminal sends an instruction to report the second access parameter.
  • the second node triggers the process of reporting the second access parameter by the second terminal, and generates the first access parameter by storing the second access parameter, and then stores the first access parameter, and then the first terminal currently connected.
  • the first access node is connected to the first node, the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the first access parameter is avoided as much as possible.
  • the delay thereby reducing the delay generated by the terminal when changing the cell, improves the user experience.
  • FIG. 11 it is a schematic structural diagram of a second node according to this embodiment.
  • the second node of the present embodiment includes a second transmitting unit 117 and a first receiving unit 118 in addition to the first determining unit 115 and the first transmitting unit 116 as described in the eleventh embodiment.
  • the second sending unit 117 of this embodiment is configured to send, to the first node, an instruction to report the second access parameter, so that the first node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is connected to
  • the first receiving unit 118 is configured to receive the second access parameter reported by the second terminal sent by the first node, and store the second access parameter.
  • the first node forwards an instruction for reporting the second access parameter and the first node receives the forwarded second access parameter, and collects the second access parameter to generate the first Accessing the parameter and storing the data, and then acquiring the first access parameter corresponding to the first node and directly transmitting the first access parameter to the first terminal for use, when the first terminal that is currently connected needs to be connected to the first node, In this way, the delay caused by acquiring the first access parameter is avoided as much as possible, thereby reducing the delay generated when the terminal changes the cell, and improving the user experience.
  • FIG. 11 it is a schematic structural diagram of a second node according to this embodiment.
  • the second node of the present embodiment includes a second transmitting unit 117 and a first receiving unit 118 in addition to the first determining unit 115 and the first transmitting unit 116 as described in the eleventh embodiment.
  • the second sending unit 117 of the embodiment is configured to send an instruction for reporting the second access parameter to the first node, where the first receiving unit 118 is configured to receive the second access parameter sent by the first node, and store the second access Enter the parameters.
  • the second access parameter in this embodiment is specifically a timing advance amount. Since the timing advance is sent by the first node to the second terminal, the first node itself can know the timing advance. Therefore, the second node can directly obtain the second access parameter from the first node.
  • the second node acquires the second access parameter directly from the first node, and generates the first access parameter by storing the second access parameter, and stores the first access parameter, and then needs to be in the first terminal that is currently connected.
  • the first node is connected to the first node, the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible.
  • the delay generated by the terminal when the cell is changed is further reduced, and the user experience is improved.
  • FIG. 11 it is a schematic structural diagram of a second node according to this embodiment.
  • the second node of the present embodiment includes a second transmitting unit 117 and a first receiving unit 118 in addition to the first determining unit 115 and the first transmitting unit 116 as described in the eleventh embodiment.
  • the second sending unit 117 of this embodiment is configured to send, to the second terminal, an instruction to report the second access parameter, where the second terminal is a terminal connected to the first node, and the first receiving unit 118 is configured to receive the report reported by the second terminal.
  • Second access parameter Second access parameter.
  • the case described in this embodiment belongs to the dual connectivity scenario, that is, the first node directly sends an instruction to report the second access parameter to the second terminal, and receives the second access parameter directly reported by the second terminal.
  • the specific operations are the same as those in the foregoing embodiment, and are not described here.
  • the second node obtains the second access parameter directly from the second terminal, and generates the first access parameter by storing the second access parameter, and then stores the first access parameter, and then needs to be in the currently connected first terminal.
  • the first node is connected to the first node, the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible.
  • the delay generated by the terminal when the cell is changed is further reduced, and the user experience is improved.
  • the embodiment provides a first terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 12 it is a schematic structural diagram of a first terminal according to this embodiment.
  • the first terminal of this embodiment includes a second receiving unit 121 and a first connecting unit 122. Its The second receiving unit 121 is configured to receive the first access parameter sent by the second node, where the first access parameter is a first access parameter corresponding to the first node that is pre-stored by the second node, and the first access parameter is used. According to the second access parameter reported by the second terminal, the second terminal is a terminal connected to the first node, and the first node is a control node of a cell adjacent to the cell of the second node; the first connection unit 122 For connecting to the first node according to the first connection parameter.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power.
  • the second terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node.
  • the specific operation mode of the first terminal is the same as that of the foregoing embodiment, and details are not described herein again.
  • the first terminal receives the first access parameter sent by the second node and connects to the first node according to the first access parameter, so that the first terminal acquires the first access parameter
  • the delay caused by the delay thereby reducing the delay generated by the terminal when changing the cell, improves the user experience.
  • the embodiment provides a second terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • the second terminal of this embodiment includes: a third receiving unit 131, a first obtaining unit 132, and a second connecting unit 133.
  • the third receiving unit 131 is configured to receive an instruction for reporting the second access parameter that is sent by the currently connected second node, where the second terminal is a terminal that needs to be connected to the first node, and the first node is a cell that is connected to the second node. a control node of the neighboring cell; the first acquiring unit 132 is configured to acquire the second access parameter; the second connecting unit 133 is configured to connect to the first node according to the second access parameter, and to the second node by using the first node Reporting the second access parameter or directly reporting the second access parameter to the second node, so that the second node collects the second access parameter to generate the first access parameter, and determines, at the second node, the first connection of the current connection.
  • the terminal needs to establish a connection with the first node, the first access parameter corresponding to the first node is obtained, and the first access parameter is sent to the first terminal, so that the first terminal is connected according to the first access parameter. To the first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter is sent to the second node for the second node to collect the second access parameter to generate the first access parameter, and is stored, and the current connection is in the subsequent communication process.
  • the first terminal needs to be connected to the first node, the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the first access parameter is avoided as much as possible.
  • the delay caused by the delay thereby reducing the delay generated by the terminal when changing the cell, improves the user experience.
  • the embodiment provides a second terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • the second terminal of this embodiment includes: a fourth receiving unit 141, a second obtaining unit 142, and a third connecting unit 143.
  • the fourth receiving unit 141 in this embodiment is configured to receive, by the first node that is currently connected, an instruction for reporting the second access parameter, where the second access parameter is sent by the first node to the second node, and the second node is a node to which the second terminal is connected before the second terminal establishes a connection with the first node, where the first node is a control node of a cell adjacent to the cell of the second node; the second acquiring unit 142 is configured to acquire a second access parameter;
  • the third connection unit 143 is configured to send the second access parameter to the second node by using the first node, or the second terminal directly sends the second access parameter to the second node that is currently connected, so that the second node collects the second access parameter.
  • the first access parameter is generated, and when the second node determines that the currently connected first terminal needs to establish a connection with the first node, the first access parameter corresponding to the first node that is stored in advance is obtained, to the first terminal. And transmitting, by the first access parameter, the first terminal is connected to the first node according to the first access parameter.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter is sent to the second node for the second node to collect the second access parameter to generate the first access parameter, and is stored, and the current connection is in the subsequent communication process.
  • the first terminal needs to be connected to the first node, the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so that the first access parameter is avoided as much as possible.
  • the delay caused by the terminal is reduced when the terminal changes the cell The delay has improved the user experience.
  • the embodiment provides a second node, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 15 it is a schematic structural diagram of a second node according to the present embodiment.
  • the second node includes: at least one first processor 151, and a first memory 152 for storing executable program code, wherein the first processor 152 reads the executable executable in the first memory by reading Program code to run a program corresponding to the executable program code for:
  • the first processor 152 before acquiring the pre-stored first access parameter corresponding to the first node, the first processor 152 further runs the executable program code by reading the executable program code stored in the first memory 151.
  • the program is configured to: send, to the second terminal, an instruction for reporting the second access parameter, where the second terminal is a terminal connected to the first node, and receive the second access parameter reported by the second terminal sent by the first node, And storing the second access parameter; or
  • the second node sends an instruction for reporting the second access parameter to the first node, so that the first node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is a terminal connected to the first node; Receiving, by the first node, the second access parameter reported by the second terminal, and storing the second access parameter; or
  • the second node sends an instruction for reporting the second access parameter to the first node; the second node receives the second access parameter sent by the first node, and stores the second access parameter; or
  • the second node sends an instruction for reporting the second access parameter to the second terminal, where the second terminal is the terminal connected to the first node, and the second node receives the second access parameter reported by the second terminal.
  • the first processor 152 further runs by reading the executable program code stored in the first memory 151 before acquiring the pre-stored first access parameter corresponding to the first node.
  • a program corresponding to the executable code for:
  • the second node continuously acquires N second access parameters corresponding to the first node, where N is a positive integer;
  • the second node determines that the values of the N second access parameters are equal, the value of the N second access parameters is used as the final first access parameter corresponding to the first node.
  • the first access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter is pre-stated to generate the first access parameter and stored, and then the first node is connected to the first node when the currently connected first terminal needs to be connected to the first node.
  • the corresponding pre-statistic first access parameter is directly sent to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible, thereby reducing the delay generated when the terminal changes the cell. , improved user experience.
  • the embodiment provides a first terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 16 is a schematic structural diagram of a first terminal according to the embodiment.
  • the first terminal includes: at least one second processor 161, and a second memory 162 for storing executable program code, wherein the second processor 162 reads the memory stored in the second memory 162 by reading Execute the program code to run the program corresponding to the executable program code for:
  • the first access parameter is a first access parameter that is pre-stored by the second node and is corresponding to the first node, where the first node is a cell that is adjacent to the cell of the second node.
  • the control node, the first access parameter is calculated according to the second access parameter reported by the second terminal, and the second terminal is the terminal connected to the first node;
  • the second terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node.
  • the first access parameter of this embodiment includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter is pre-stated to generate a first access parameter and stored, and then the first terminal connected to the first node needs to be connected to the first node.
  • the pre-stored first access parameter corresponding to a node is directly delivered to the first terminal for use, so that the delay caused by acquiring the first access parameter is avoided as much as possible, thereby reducing the terminal when the cell is transformed. The delay has improved the user experience.
  • the embodiment provides a second terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 17 it is a schematic structural diagram of a second terminal according to this embodiment.
  • the second terminal includes: at least one third processor 171, and a third memory 171 for storing executable program code, wherein the third processor 172 reads the third memory 172 by reading Execute the program code to run the program corresponding to the executable program code for:
  • the first node Connecting to the first node according to the second access parameter, the first node is a control node of the cell adjacent to the cell of the second node, and reporting the second access parameter to the second node by using the first node or directly to the second node
  • the node reports the second access parameter, so that the second node collects the second access parameter to generate the first access parameter, and obtains, when the second node determines that the currently connected first terminal needs to establish a connection with the first node,
  • the first access parameter corresponding to the first node is pre-stored, and the first access parameter is sent to the first terminal, so that the first terminal is connected to the first node according to the first access parameter.
  • the second terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node.
  • the first access parameter of this embodiment includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second access parameter is sent by the second terminal to the second node, and the second access parameter is generated by the second node to generate the first access parameter, and is stored, and in the subsequent communication process,
  • the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so as to avoid obtaining the first
  • the delay caused by the access parameters thereby reducing the delay generated by the terminal when changing the cell, improves the user experience.
  • the embodiment provides a second terminal, which is used to perform the method for establishing a connection by the terminal in the foregoing embodiment.
  • FIG. 18 is a schematic structural diagram of a second terminal according to the embodiment.
  • the second terminal includes: at least one fourth processor 181, and a fourth memory 182 for storing executable program code, wherein the fourth processor 182 reads the executable in the fourth memory 182 by reading Execute the program code to run the program corresponding to the executable program code for:
  • the second terminal is specifically a terminal connected to the first node after being disconnected from the second node or a terminal that is connected to the second node and connected to the first node.
  • the first access parameter of this embodiment includes a timing advance and/or a terminal transmit power
  • the second access parameter includes a timing advance and/or a terminal transmit power
  • the second terminal sends a second access parameter to the second node for the second node to collect the second access parameter to generate the first access parameter, and stores the current access link in the subsequent communication process.
  • the first access parameter corresponding to the first node is obtained and directly sent to the first terminal for use, so as to avoid The delay caused by the first access parameter is obtained, thereby reducing the delay generated by the terminal when the cell is changed, and improving the user experience.

Abstract

本发明提供一种终端建立连接的方法、第二节点、第一终端和第二终端，其中方法包括：第二节点判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与第一节点对应的第一接入参数，第一节点为与第二节点的小区相邻的小区的控制节点，第一终端当前连接第二节点，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端；第二节点向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。根据本发明，能够减小终端在变换小区时产生的延迟，提高了用户体验。

Description

终端建立连接的方法、第二节点、第一终端和第二终端 技术领域
本发明涉及无线通信技术，尤其涉及一种终端建立连接的方法、第二节点、第一终端和第二终端。
背景技术
移动通信系统不仅追求容量的最大化，而且需要更广阔的覆盖范围，即用户设备(User,Equipment，UE)移动到的任何地方，都要有移动通信系统覆盖。
现有技术中，采用蜂窝组网解决频率资源限制的问题，并增大系统容量，同时扩展覆盖范围。蜂窝组网是将一个移动通信服务区划分成许多以正六边形为基本几何图形的覆盖区域，称为蜂窝小区。一个较低功率的发射机服务一个蜂窝小区，在较小的区域内设置一定数量的UE。为了保证业务的连续性，当正在接受服务的UE进入相邻蜂窝小区时，移动通信系统需将UE切换到相邻小区，即将UE从当前连接的基站切换到相邻蜂窝小区的基站上，从而不中断通信过程。
但是，现有技术中的终端切换方法，在切换过程中会出现较长的延迟，不利于用户的体验。
发明内容
本发明在多个方面提供一种终端建立连接的方法、第二节点、第一终端和第二终端，用于减小终端在与节点建立连接时产生的延迟。
本发明第一方面提供一种终端建立连接的方法，包括：
第二节点判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
所述第二节点向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第一方面，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
所述第二节点向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
所述第二节点接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
在第二种可能实现的方式中，根据第一方面，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
所述第二节点向所述第一节点发送上报第二接入参数的指令，以使所述第一节点向第二终端发送所述上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
所述第二节点接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
在第三种可能实现的方式中，根据第一方面，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
所述第二节点向所述第一节点发送上报第二接入参数的指令；
所述第二节点接收所述第一节点发送的第二接入参数，并存储该第二接入参数。
在第四种可能实现的方式中，根据第一方面，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
所述第二节点向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
所述第二节点接收所述第二终端上报的所述第二接入参数。
在第五种可能实现的方式中，根据第一方面、第一种可能实现的方式至第四种可能实现的方式，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
在第六种可能实现的方式中，根据第一方面、第一种可能实现的方式 至第五种可能实现的方式，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
所述第二节点连续获取与所述第一节点对应的N个第二接入参数，其中，N为正整数；
所述第二节点若确定所述N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与所述第一节点对应的第一接入参数。
在第七种可能实现的方式中，根据第一方面、第一种可能实现的方式至第六种可能实现的方式，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第二方面提供一种终端建立连接的方法，包括：
第一终端接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端,所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
所述第一终端根据所述第一连接参数连接至所述第一节点。
在第一种可能实现的方式中，根据第二方面，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
在第二种可能实现的方式中，根据第二方面和第一种可能实现的方式，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第三方面提供一种终端建立连接的方法，包括：
第二终端接收当前连接的第二节点发送的上报第二接入参数的指令，所述第二终端为需连接至第一节点的终端，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
第二终端获取所述第二接入参数；
第二终端根据所述第二接入参数连接至所述第一节点，并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成 第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第三方面，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
在第二种可能实现的方式中，根据第三方面和第一种可能实现的方式，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第四方面提供一种终端建立连接的方法，包括：
第二终端接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
第二终端获取所述第二接入参数；
第二终端通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第四方面，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
在第二种可能实现的方式中，根据第四方面和第一种可能实现的方式，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第五方面提供一种第二节点，包括：
第一判断单元，用于判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
第一发送单元，用于向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第五方面，还包括：
第二发送单元，用于向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
第一接收单元，用于接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
在第二种可能实现的方式中，根据第五方面，还包括：
第二发送单元，用于向所述第一节点发送上报第二接入参数的指令，以使所述第一节点向第二终端发送所述上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
第一接收单元，用于接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
在第三种可能实现的方式中，根据第五方面，还包括：
第二发送单元，用于向所述第一节点发送上报第二接入参数的指令；
第一接收单元，用于接收所述第一节点发送的第二接入参数，并存储该第二接入参数。
在第四种可能实现的方式中，根据第五方面，还包括：
第二发送单元，用于向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
第一接收单元，用于接收所述第二终端上报的所述第二接入参数。
在第五种可能实现的方式中，根据第五方面、第一种可能实现的方式至第四种可能实现的方式，还包括确定单元，所述确定单元用于：
连续获取与所述第一节点对应的N个第二接入参数，其中，N为正整 数；
若确定所述N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与所述第一节点对应的第一接入参数。
在第六种可能实现的方式中，根据第五方面、第一种可能实现的方式至第五种可能实现的方式，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第六方面提供一种第一终端，包括：
第二接收单元，用于接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
第一连接单元，用于根据所述第一连接参数连接至所述第一节点。
在第一种可能实现的方式中，根据第六方面，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第七方面提供一种第二终端，包括：
第三接收单元，用于接收当前连接的第二节点发送的上报第二接入参数的指令，所述第二终端为需连接至第一节点的终端，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
第一获取单元，用于获取所述第二接入参数；
第二连接单元，用于根据所述第二接入参数连接至所述第一节点，并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第七方面，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或 终端发射功率。
本发明第八方面提供一种第二终端，包括：
第四接收单元，用于接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
第二获取单元，用于获取所述第二接入参数；
第三连接单元，用于通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
在第一种可能实现的方式中，根据第八方面，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
本发明第九方面提供一种第二节点，包括：至少一个第一处理器，以及第一存储器，所述第一存储器用于存储可执行程序代码，其中，所述第一处理器通过读取所述第一存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
本发明第十方面提供一种第一终端，包括：至少一个第二处理器，以及第二存储器，所述第二存储器用于存储可执行程序代码，其中，所述第 二处理器通过读取所述第二存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一节点为所述第二节点的小区相邻的小区的控制节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
根据所述第一连接参数连接至所述第一节点。
本发明第十一方面提供一种第二终端，包括：至少一个第三处理器，以及第三存储器，所述第三存储器用于存储可执行程序代码，其中，所述第三处理器通过读取所述第三存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
接收当前连接的第二节点发送的上报第二接入参数的指令，所述第二终端为需连接至第一节点的终端；
获取所述第二接入参数；
根据所述第二接入参数连接至第一节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
本发明第十二方面提供一种第二终端，包括：至少一个第四处理器，以及第四存储器，所述第四存储器用于存储可执行程序代码，其中，所述第四处理器通过读取所述第四存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
第二终端接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
第二终端获取所述第二接入参数；
第二终端通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
本发明提供的终端建立连接的方法、第二节点、第一终端和第二终端，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先存储的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了第一终端获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1A为根据本发明一实施例的终端建立连接的方法流程示意图；
图1B为根据本发明另一实施例的终端建立连接的方法流程示意图；
图2为根据本发明再一实施例的终端建立连接的方法的信令图；
图3为根据本发明又一实施例的终端建立连接的方法的信令图；
图4为根据本发明另一实施例的终端建立连接的方法的流程示意图；
图5为根据本发明再一实施例的终端建立连接的方法的流程示意图；
图6为根据本发明又一实施例的双连接场景中终端建立连接的流程示意图；
图7为根据本发明另一实施例的终端建立连接的方法的流程示意图；
图8为根据本发明再一实施例的终端建立连接的方法的流程示意图；
图9为根据本发明又一实施例的终端建立连接的方法的流程示意图；
图10A为根据本发明另一实施例的第二节点的结构示意图；
图10B为根据本发明再一实施例的第二节点的结构示意图；
图11为根据本发明又一实施例的第二节点的结构示意图；
图12为根据本发明另一实施例的第一终端的结构示意图；
图13为根据本发明再一实施例的第二终端的结构示意图；
图14为根据本发明又一实施例的第二终端的结构示意图；
图15为根据本发明另一实施例的第二节点的结构示意图；
图16为根据本发明再一实施例的第一终端的结构示意图；
图17为根据本发明又一实施例的第二终端的结构示意图；
图18为根据本发明另一实施例的第二终端的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
本实施例提供一种终端建立连接的方法，用于终端与节点之间建立连接。以下各实施例的节点具体可以是控制节点，例如基站等与终端建立连接的节点，基站例如是evolved Node-B(eNB，演进的节点B)、Node-B(NB，节点B)、基站收发系统(base transceiver system)或接入点(access point)。如图1A所示，为根据本实施例的终端建立连接的方法的流程示意图。本实施例的执行主体为第二节点。
步骤110，第二节点判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与第一节点对应的第一接入参数。
其中，第一节点为与第二节点的小区相邻的小区的控制节点，第一终 端当前连接第二节点，第一接入参数是根据第二终端上报的第一接入参数统计的，第二终端为连接至第一节点的终端。
本实施例的第一接入参数包括定时提前量(Timing Advance，TA)和/或终端发射功率。相应地，第二接入参数也包括定时提前量(Timing Advance，TA)和/或终端发射功率。即，第二接入参数为定时提前量时，第一接入参数也为定时提前量，第二接入参数为终端发射功率时，第一接入参数也为终端发射功率，当第二接入参数同时包括定时提前量和终端发射功率时，第一接入参数也同时包括定时提前量和终端发射功率。以下实施例均与上述情况一致，不再做具体说明。该终端发射功率可以是一个范围，某一个范围内的终端发射功率对应的一个第一接入参数。由于终端与基站进行交互时，终端需不停的调整功率，例如将功率逐步增大，以确定基站是否能够接收到该终端发送的信息，当确定基站能接收到终端发送的信息时，将此时的功率确定为终端发射功率。
步骤120，第二节点向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
具体地，该第一接入参数可以包含在RRC连接重配置消息(RRCConnectionReconfiguration)中，其中，RRC为无线资源控制，英文全称为Radio Resource Control。
根据本实施例的终端建立连接的方法，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先存储的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例二
本实施例提供一种终端建立连接的方法，用于终端从当前小区切换到邻区。本实施例的执行主体为第二节点。如图1B所示，为根据本实施例的终端建立连接的方法的流程示意图。
步骤101，第二节点判断当前连接的第一终端是否需切换至第一节点，若判断结果为是，则获取预先存储的与第一节点对应的第一接入参数，第一节点为与第二节点的小区相邻的小区的控制节点，第一终端当前连接第 二节点。
其中，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为从第二节点切换至第一节点的终端。第二终端的个数可以为一个，也可以为多个。第二节点可以直接将第二终端上报的最新的第二接入参数作为与第一节点对应的第一接入参数，也可以在获取M个第二接入参数后，对该M个第二接入参数取平均值，选择与该平均值的差的绝对值最小的一个第二接入参数作为第二节点获取到的与第一节点对应的第一接入参数，若与该平均值的差的绝对值最小的第二接入参数有多个，则选择其中最新上报的第二接入参数作为第二节点获取到的与第一节点对应的第一接入参数。其中，M为正整数。
可选地，在步骤101之前，还包括：
第二节点连续获取与第一节点对应的N个第二接入参数，其中，N为正整数；
第二节点若确定N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与第一节点对应的第一接入参数。
为了获取准确的第一接入参数，第二节点可以在第二接入参数的值稳定之后将该第二接入参数作为最终的与该第一节点对应的第一接入参数。第二节点在获取到连续N个与第一节点对应相同的第二接入参数之后，就可以将该第二接入参数作为最终的与该第一节点对应的第一接入参数进行存储，并在后续过程中应用。
当然，第二节点还可以采用其它方式根据第二接入参数统计第一接入参数，具体可以根据实际需要设定，在此不再赘述。
第二节点判断第二节点连接的第一终端是否需要切换，具体可以根据第一终端上报的测量报告或者根据第一终端的RSRP(Reference Signal Receiving Power，参数信号接收功率)进行判断，该技术属于现有技术，在此不再赘述，当然还可以采用其它方式判断第一终端是否需要切换，在此不做限定。
本实施例可以选择预先设置第一接入参数与第一节点的对应关系表，该对应关系表可以预先设置在第二节点中，也可以设置在其他的存储器中，只要第二节点在需要使用时能够获取到即可，具体可以根据实际需要 设定，在此不做限定。第二节点判断出第一终端需要切换至第一节点时，就可以根据上述的对应关系表获取到与该第一节点对应的第一接入参数。
本实施例的第一接入参数包括定时提前量(Timing Advance，TA)和/或终端发射功率。该终端发射功率可以是一个范围，某一个范围内的终端发射功率对应的一个第一接入参数。由于终端与基站进行交互时，终端需不停的调整功率以确定基站是否能够接收到该终端发送的信息，当确定基站能接收到终端发送的信息时，将此时的功率确定为终端发射功率。
步骤102，第二节点向第一终端下发第一接入参数，以使第一终端根据第一接入参数切换至第一节点。
具体地，该第一接入参数可以包含在RRC连接重配置消息中。
第二节点将获取到的预先存储的第一接入参数直接下发给待切换的第一终端，第一终端接收到该第一接入参数，就可以利用该第一接入参数切换到第一节点，即第一终端断开与第二节点的连接，并与第一节点进行连接。
根据本实施例的终端建立连接的方法，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需切换至第一节点时，获取与该第一节点对应的预先存储的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，提高了用户体验。
实施例三
本实施例对上述实施例的终端建立连接的方法做进一步补充说明。
本实施例中，在步骤101之前，还包括：
第二节点向第二终端发送上报第二接入参数的指令，该第二终端是从第二节点连接至第一节点的终端；
第二节点接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数。
本实施例的第二接入参数是定时提前量时，该定时提前量是第一节点根据第二终端发送的随机接入序列生成的。第一节点生成该定时提前量之后，下发至第二终端，以使第二终端根据该定时提前量切换到第一节点。
若第二接入参数为发射功率，则该第二接入参数是由第二终端生成 的，可以根据下面的公式计算终端发射功率P：
P＝preambleInitialReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_TRANSMISSION_COUNTER–1)*powerRampingStep，其中，preambleInitialReceivedTargetPower是初始发射功率，DELTA_PREAMBLE是功率补偿，PREAMBLE_TRANSMISSION_COUNTER是功率攀升次数，powerRampingStep是功率攀升步长。该方法为属于现有技术，具体过程不再赘述。
第二终端在上报终端发射功率时，可以选择仅上报功率攀升次数，由第二节点根据该功率攀升次数和预先设置的初始发射功率、功率补偿和功率攀升步长确定出终端发射功率，该初始发射功率、功率补偿和功率攀升步长是基站配置给终端的，同一个基站配置给同一小区下的终端的这些参数是一样的，不同小区之间的这些参数可以不同。
第二终端还可以上报PHR(Power Headroom Report，功率余量报告)，以使第二节点根据该PHR获取到相应的终端发射功率，第二节点获知终端发射功率的最大量，减去PHR中携带的功率余量，就可以得到终端发射功率，具体过程不再赘述。
下面，具体举例来说明本实施例的终端建立连接的方法。如图2所示，为根据本实施例的终端建立连接的方法的信令图。
步骤201，第二节点210判断出第二终端220需切换至第一节点230，向第一节点230发送与第二终端220对应的切换请求。
具体地，第二节点210根据第二终端220的测量报告和RRM(Radio Resource Management，无线资源管理)算法为第二终端220确定第一节点230，并将第二终端220的上下文(Context)信息随切换请求发送给第一节点230。
步骤202，第一节点230确认该切换请求。
第一节点230确认该切换请求表示第一节点230为即将到来的切换第二终端210做准备，同时将预分配给第二终端210的C-RNTI(Cell Radio Network Temporary Identifier，小区无线网络临时标识)和其他参数在切换请求的确认消息中返回给第二节点210。在收到了切换请求的确认消息后，第二节点210准备将分组数据转发给第一节点230。确认切换请求 的技术为现有技术，在此不再赘述。
步骤203，第二节点210向第二终端220发送切换命令，指示第二终端220进行切换，且该切换命令中包括指示第二终端220上报第二接入参数的指令。
具体地，该切换命令是指RRC连接重配置消息。
步骤204，第二终端220接收到第二节点210发送的切换命令后，与第一节点230取得上行同步和下行同步，并获取第二接入参数。
具体第二终端220如何与第一节点230取得上行同步和下行同步，属于现有技术，在此不再赘述。
需要指出的是，当第二接入参数表示定时提前量时，该第二接入参数为第二终端220从第一节点230处获取的定时提前量，当第二接入参数表示终端发射功率时，该第二接入参数为第二终端220根据上述实施例中不断调整功率获取到的第二接入参数。
步骤205，第二终端220向第一节点230发送切换确认命令，该切换确认命令表示第二终端220已经完成切换。
步骤206，第二终端220向第一节点230上报第二接入参数。
需要指出的是，该步骤上报的第二接入参数也可以携带在步骤205中的切换确认命令中。
具体地，该步骤上报的第二接入参数可以携带在RRC连接重配置完成的消息中。因为该RRC连接重配置完成的消息的发送时间恰好在切换完成之后，并且包含到这条消息中不需要增加额外信令。
步骤207，第一节点230接收到该第二终端220上报的第二接入参数后，通过X2接口向第二节点210发送该第二接入参数。
需要指出的是，该步骤上报的第二接入参数也可以携带在释放终端上下文(User Equipment Context release)的消息中，因为此时第二终端220已经完成切换过程。
步骤208，第二节点210接收到第一节点230发送的第二接入参数之后，存储该第二接入参数，以供后续统计使用。
其中，第二接入参数包括定时提前量和/或终端发射功率。
根据本实施例的终端建立连接的方法，第二节点210将上报第二接入 参数的命令直接下发给第二终端220，以使第二终端220在接收到上报第二接入参数的指令后，通过第一节点230上报给第二节点210，第二节点210将接收到的第二接入参数存储起来，以供后续统计第一接入参数，以避免从第二节点210切换至第一节点230的第一终端由于获取第一接入参数产生不必要的延迟。
实施例四
本实施例对上述实施例一和实施例二的终端建立连接的方法做进一步补充说明。
本实施例中，在步骤101之前，还包括：
第二节点向第一节点发送上报第二接入参数的指令，以使第一节点向第二终端发送上报第二接入参数的指令，该第二终端是从第二节点连接至第一节点的终端；
第二节点接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数。
当第二接入参数为定时提前量时，该第二接入参数是第一节点根据第二终端与第一节点进行上行同步时第二终端发送的随机接入序列生成的，第二终端与第一节点进行上行同步之前与第二节点连接。而终端发射功率生成的方式与实施例三一致，在此不再赘述。
下面，具体举例来说明本实施例的终端建立连接的方法。如图3所示，为根据本实施例的终端建立连接的方法的流程示意图。
步骤301，第二节点310判断出第二终端320需切换至第一节点330，向第一节点330发送与第二终端320对应的切换请求，且该切换请求中可以包括指示第一节点330发送第二接入参数的指令，该第二接入参数是由第二终端320发送给第一节点330的。
具体地，可以在第二终端320切换完成之后，第一节点330向第二节点310发送第二接入参数。
步骤302，第一节点330确认该切换请求。
第一节点330确认该切换请求表示第一节点330为即将到来的切换第二终端320做准备，同时将预分配给第二终端320的C-RNTI(Cell Radio Network Temporary Identifier，小区无线网络临时标识)和其他参数在 切换请求的确认消息中返回给第二节点310。在收到了切换请求的确认消息后，第二节点310准备将分组数据转发给第一节点330。
步骤303，第二节点310向第二终端320发送切换命令，指示第二终端320进行切换。
步骤304，第二终端320接收到第二节点310发送的切换命令后，与第一节点320取得上行同步和下行同步，并获取第二接入参数。
具体第二终端320如何与第一节点330取得上行同步和下行同步，属于现有技术，在此不再赘述。
需要指出的是，当第二接入参数表示定时提前量时，该第二接入参数为第二终端320从第一节点330处获取的定时提前量，当第二接入参数表示终端发射功率时，该第二接入参数为第二终端320根据上述实施例中不断调整功率获取到的第二接入参数。
步骤305，第二终端320向第一节点330发送切换确认命令，该切换确认命令表示第二终端320已经完成切换。
步骤306，第一节点330在收到第二终端320发送的切换确认命令之后，向第二终端发送上报第二接入参数的指令，指示第二终端上报第二接入参数。
步骤307，第二终端320接收到第一节点330发送的指示上报第二接入参数的指令后，上报切换时的第二接入参数。
步骤308，第一节点330收到第二终端320上报的第二接入参数后，通过X2接口将第二接入参数发送给第二节点310。
需要指出的是，该步骤上报的第二接入参数也可以携带在释放终端上下文(UE Context release)的消息中，因为此时第二终端320已经完成切换过程。
步骤309，第二节点310接收到第一节点330发送的第二接入参数之后，存储该第二接入参数以供后续统计使用。
根据本实施例的终端建立连接的方法，第二节点310向第一节点330发送指示上报第二接入参数的指令，以使第一节点330根据该指令指示第二终端320上报第二接入参数，并发送至第二节点进行存储，以供第二节点统计第一接入参数，以便后续其他终端需从第二节点切换至第一节点时 使用，以尽量避免获取第一接入参数时的延迟，提高终端建立连接效率，提升用户体验。
实施例五
本实施例提供一种终端建立连接的方法，执行该终端建立连接的方法为主节点。如图4所示，为根据本实施例的终端建立连接的方法的流程示意图。
本实施例的场景为双连接场景，即第一终端连接一个主节点之后还可以与其它节点连接来增加数据传输，其它节点均称为辅节点，即第一终端既可以与主节点之间进行信息的传输，也可以与辅节点之间进行信息的传输。但是连接以及释放连接均由主节点控制，辅节点只负责数据传输。即本实施例的主节点、第一辅节点分别对应第二节点、第一节点。
步骤401，主节点判断当前连接的第一终端是否需连接至第一辅节点，若判断结果为是，则获取预先存储的与第一辅节点对应的第一接入参数，该第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为与主节点连接并需连接至第一辅节点的终端。
第二终端的个数可以为一个，也可以为多个。主节点可以直接将第二终端上报的最新的第二接入参数作为与第一辅节点对应的第一接入参数；也可以在获取M个第二接入参数后，对该M个第二接入参数取平均值，选择与该平均值的差的绝对值最小的一个第二接入参数作为主节点获取到的与第一辅节点对应的第一接入参数，若与该平均值的差的绝对值最小的第二接入参数有多个，则选择其中最新上报的第二接入参数作为主节点获取到的与第一辅节点对应的第一接入参数；还可以选定一时间段，统计该时间段内上报的出现次数最多的第二接入参数作为主节点获取到的与第一辅节点对应的第一接入参数，或者是选择一定数量的第二接入参数，统计出现次数最多的第二接入参数作为主节点获取到的与第一辅节点对应的第一接入参数，当出现次数最多的第二接入参数有多个时，采用最新上报的出现次数最多的第二接入参数作为主节点获取到的与第一辅节点对应的第一接入参数。当然，主节点还可以采用其它方式根据第二接入参数统计第一接入参数，具体可以根据实际需要设定，在此不再赘述。其中，M为正整数。
第一终端是否需连接至第一辅节点至少包括以下两种情况：第一种情况是第一终端当前仅连接主节点，并未连接辅节点，需保持连接主节点并增加连接至一个第一辅节点；第二种情况是，第一终端当前连接主节点和第二辅节点，需保持连接主节点并与第二辅节点断开后连接至第一辅节点。
本实施例的主节点、第一辅节点和第二辅节点均为无线通信的节点，例如基站。
对于第二种情况，主节点判断第一辅节点连接的第一终端是否需要变换连接，具体可以根据第一终端上报的测量报告或者根据第一终端的RSRP(Reference Signal Receiving Power，参数信号接收功率)进行判断，该技术属于现有技术，在此不再赘述。
本实施例可以预先设置与第一辅节点的第一接入参数的对应关系表，该对应关系表可以预先设置在主节点中，也可以设置在其他的存储器中，只要主节点在需要使用时能够获取到即可，具体可以根据实际需要设定，在此不做限定。主节点判断出第一终端需要连接至第一辅节点时，就可以根据上述的对应关系表获取到与该第一辅节点对应的第一接入参数。
本实施例的第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。具体如何生成定时提前量和终端发射功率与上述实施例一致，在此不再赘述。
步骤402，主节点向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一辅节点。
具体地，该第一接入参数可以包含在RRC连接重配置消息中。
主节点将获取到的预先存储的第一接入参数直接下发给待变换/增加辅节点连接的第一终端，第一终端接收到该第一接入参数，就可以利用该第一接入参数连接到第一辅节点。
可选地，在步骤401之前，还包括：
主节点连续获取与第一辅节点对应的N个第二接入参数，其中，N为正整数；
主节点若确定N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与第一辅节点对应的第一接入参数。
为了获取准确的第一接入参数，主节点可以在第二接入参数的值稳定之后将该第二接入参数作为最终的与该第一辅节点对应的第一接入参数。主节点在获取到连续N个与该第一辅节点对应相同的第二接入参数之后，就可以将该第二接入参数作为最终的与该第一辅节点对应的第一接入参数进行存储，并在后续过程中应用。当然，确定最终的第一接入参数的方法还有很多，具体可以实际需要进行设定，在此不做限定。
根据本实施例的终端建立连接的方法，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端连接至第一辅节点时，获取与第一辅节点对应的预先存储的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，提高了用户体验。
实施例六
本实施例对上述实施例的终端建立连接的方法做进一步补充说明。
本实施例中，在判断当前连接的第一终端是否需连接至第一辅节点之前，还包括：
主节点向第二终端发送上报第二接入参数的指令，该第二终端为待连接至第一辅节点的终端；
主节点接收第二终端上报的第二接入参数。
具体地，该向第二终端发送上报第二接入参数的指令可以包含在RRC连接重配置消息中。若该第二接入参数为定时提前量，则该第二接入参数是第一辅节点根据第二终端与第一辅节点进行上行同步时第二终端发送的随机接入序列生成的，若该第二接入参数为终端发射功率，则与上述实施例的终端发射功率生成的方式一致，在此不再赘述。
如图5所示，为根据本实施例的双连接场景中终端建立连接的流程示意图，以上述的第二种情况为例进行说明。第二终端连接两个节点，一个是主节点，一个是第二辅节点，第二终端需连接至的节点为第一辅节点。当第二终端需从当前连接的第二辅节点变换连接至第一辅节点时，具体过程如下：
步骤501，主节点判断出第二终端需从第二辅节点变换连接至第一辅节点时，向第二终端发送RRC连接重配消息，指示第二终端进行变换连接， RRC连接重配消息中包括指示第二终端上报第二接入参数的信令。
该第二接入参数包括定时提前量和/或终端发射功率。
步骤502，第二终端与第一辅节点取得上行同步和下行同步，并向主节点发送获取到的第二接入参数，主节点存储与第一辅节点对应的第二接入参数。
具体第二终端如何与第一辅节点取得上行同步和下行同步，属于现有技术，在此不再赘述。
步骤503，第二终端向主节点发送连接确认命令，该连接确认命令表示第二终端已经完成连接。
根据本实施例的终端建立连接的方法，主节点通过统计第二终端从第二辅节点连接至第一辅节点时获取的第二接入参数以生成第一接入参数，并进行存储，以在后续第一终端需从第二辅节点连接至第一辅节点时直接将第一接入参数下发给第一终端进行使用，以尽量避免第一终端获取第一接入参数造成的延迟，提高终端建立连接效率，提升用户体验。
实施例七
本实施例对实施例五的终端建立连接的方法做进一步的补充说明。
本实施例中，在获取预先存储的与第一节点对应的第一接入参数之前，还包括：
主节点向第一辅节点发送上报第二接入参数的指令；
接收第一辅节点发送的第二接入参数，并存储该第二接入参数。
具体地，该发送上报第二接入参数的指令可以包含在增加辅节点请求(SeNB Addition Request)的消息中。
具体地，如图6所示，为根据本实施例的双连接场景中终端建立连接的流程示意图，以上述的第二种情况为例进行说明。第二终端连接两个节点，一个是主节点，一个是第二辅节点，第二终端需连接至的节点为第一辅节点。当第二终端需从当前连接的第二辅节点变换连接至第一辅节点时，具体过程如下：
步骤601，主节点判断出第二终端需从第二辅节点变换连接至第一辅节点时，向第二终端发送RRC(Radio Resource Control，无线资源控制)连接重配消息，指示第二终端进行变换连接，并向第一辅节点发送发送第 二接入参数得指令。
该第二接入参数包括定时提前量和/或终端发射功率。
步骤602，第二终端与第一辅节点取得上行同步和下行同步，并向第一辅节点发送获取到的第二接入参数。
具体第二终端如何与第一辅节点取得上行同步和下行同步，属于现有技术，在此不再赘述。该第二接入参数中可以包括第二终端的标识和/或主节点的标识。
步骤603，第一辅节点向主节点发送第二接入参数，主节点存储与第一辅节点对应的第二接入参数。
步骤604，第二终端向主节点发送连接确认命令，该连接确认命令表示第二终端已经完成连接。
可选地，RRC连接重配消息中可以包括指示第二终端上报第二接入参数的信令，这样，第二终端上报第二接入参数至第一节点之后，可以触发第一节点将第二接入参数发送至主节点的操作。
根据本实施例的终端建立连接的方法，主节点通过统计第二终端从第二辅节点连接至第一辅节点时获取的第二接入参数，并生成第一接入参数进行存储，以在后续第一终端需从第二辅节点连接至第一辅节点时直接将第一接入参数下发给第一终端进行使用，以尽量避免第一终端获取第一接入参数造成的延迟，提高终端建立连接效率，提升用户体验。
需指出的是，上述实施例中，由于定时提前量是第一辅节点生成的，因此，主节点也可以直接从第一辅节点处获取生成的定时提前量。
具体地，在获取预先存储的与第一辅节点对应的第一接入参数之前，还包括：
向第一辅节点发送获取定时提前量的指令，以使第一辅节点向主节点发送定时提前量，定时提前量是第一辅节点根据第二终端连接至第一辅节点时第二终端发送的随机序列生成的；
接收第一辅节点发送的定时提前量，并存储该定时提前量。
即，在获取定时提前量时，主节点可以不需要指示第二终端进行上报，而直接由第一辅节点发送给主节点，这样可以节省信息交互的操作，减轻网络负担。
以上各实施例的第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端。
实施例八
本实施例提供一种终端建立连接的方法，该终端建立连接的方法的执行主体为第一终端，即上述实施例中的第一终端。
如图7所示，为根据本实施例的终端建立连接的方法的流程示意图。
步骤701，第一终端接收第二节点发送的第一接入参数，第一接入参数是第二节点预先存储的与第一节点对应的第一接入参数，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端，第一节点为与第二节点的小区相邻的小区的控制节点。
本实施例的第一接入参数包括定时提前量和/或终端发射功率，相应地，第二接入参数包括定时提前量和/或终端发射功率。该终端发射功率可以是一个范围，某一个范围内的终端发射功率对应的一个第一接入参数。由于终端与基站进行交互时，终端需不停的调整功率，例如将功率逐步增大，以确定基站是否能够接收到该终端发送的信息，当确定基站能接收到终端发送的信息时，将此时的功率确定为终端发射功率。
第一终端当前连接的是第二节点，若第二节点判断出第一终端需与第一节点建立连接，则向第一终端下发预先存储的、与第一节点对应的第一接入参数。具体地，该第一接入参数可以包含在RRC连接重配置消息中。即，第二节点判断出第一终端需与第一节点建立连接，则向第一终端下发RRC连接重配置消息，RRC连接重配置消息中包括预先存储的与第一节点对应的第一接入参数。当然，该第一接入参数也可以由第二节点单独发送，例如在发送RRC连接重配置消息之后进行发送。
其中，第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端，具体地情况与上述实施例描述的一致，在此不再赘述。
步骤702，第一终端根据第一连接参数连接至第一节点。
第一终端在接收到该第一连接参数之后，就可以根据该第一连接参数连接至第一节点。
根据本实施例的终端建立连接的方法，第二节点通过预先统计第二接 入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了第一终端获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例九
本实施例提供一种终端建立连接的方法，本实施例的执行主体为第二终端。
如图8所示，为根据本实施例的终端建立连接的方法的流程示意图。
步骤801，第二终端接收当前连接的第二节点发送的上报第二接入参数的指令，第二终端为需连接至第一节点的终端。
本实施例的第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端，具体过程与上述实施例一致，在此不再赘述。第二接入参数包括定时提前量和/或终端发射功率。
步骤802，第二终端获取第二接入参数。
该步骤的第二终端获取第二接入参数的方式与现有技术一致，在此不再赘述。
步骤803，第二终端根据第二接入参数连接至第一节点，第一节点为与第二节点的小区相邻的小区的控制节点，并通过第一节点向第二节点上报第二接入参数或者直接向第二节点上报第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
第二终端通过第一节点向第二节点上报第二接入参数的过程或者第二终端直接向第二节点上报第二接入参数的过程与上述实施例一致，在此不再赘述。第一终端根据第一接入参数连接至第一节点的过程也与上述实施例一致，在此不再赘述。第一接入参数包括定时提前量和/或终端发射功率。
根据本实施例的终端建立连接的方法，由第二终端向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中，在当前连接的第一终端需连接至第一节点时，第二节点获取与该第一节点对应的预先统计的第一接入参数，并直接下发至第一终端进行利用，这样就尽量避免了第一终端获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十
本实施例提供一种终端建立连接的方法，本实施例的执行主体为第二终端。
如图9所示，为根据本实施例的终端建立连接的方法的流程示意图。
步骤901，第二终端接收当前连接的第一节点发送的上报第二接入参数的指令，第二接入参数是第一节点向第二节点发送的，第二节点为第二终端与第一节点建立连接之前第二终端连接的节点，第一节点为与第二节点的小区相邻的小区的控制节点。
第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端，具体过程与上述实施例一致，在此不再赘述。第二接入参数包括定时提前量和/或终端发射功率。
步骤902，第二终端获取第二接入参数。
该步骤的第二终端获取第二接入参数的方式与现有技术一致，在此不再赘述。
步骤903，第二终端通过第一节点向第二节点发送第二接入参数或者第二终端直接向当前连接的第二节点发送第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
第二终端通过第一节点向第二节点上报第二接入参数的过程与上述实施例一致，在此不再赘述。第一终端根据第一接入参数连接至第一节点的过程也与上述实施例一致，在此不再赘述。第一接入参数包括定时提前量和/或终端发射功率。
根据本实施例的终端建立连接的方法，由第二终端向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中，在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
实施例十一
本实施例提供一种第二节点，该第二节点用于执行上述实施例的终端建立连接的方法。
如图10A所示，为根据本实施例的第二节点的结构示意图。该第二节点包括第一判断单元115和第一发送单元116。
其中，第一判断单元115用于判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与第一节点对应的第一接入参数，第一节点为与第二节点的小区相邻的小区的控制节点，第一终端当前连接第二节点，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端；第一发送单元116用于向第一终端下发第一判断单元115获取到的第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
本实施例的第一接入参数和第二接入参数均包括定时提前量(Timing Advance，TA)和/或终端发射功率。该终端发射功率可以是一个范围，某一个范围内的终端发射功率对应的一个第一接入参数。由于终端与基站进行交互时，终端需不停的调整功率，例如将功率逐步增大，以确定基站是否能够接收到该终端发送的信息，当确定基站能接收到终端发送的信息时，将此时的功率确定为终端发射功率。
具体地，该第一接入参数可以包含在RRC连接重配置消息中。第二终 端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端
如何根据第二终端上报的第二接入参数统计第一接入参数与上述实施例一致，在此不再赘述。
可选地，如图10B所示，本实施例的第二节点还包括确定单元114。该确定单元114用于：
连续获取与第一节点对应的N个第二接入参数，其中，N为正整数；
若确定N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与第一节点对应的第一接入参数。
该确定单元114的具体操作过程与实施例二一致，在此不再赘述。
根据本实施例的第二节点，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了第一终端获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十二
本实施例对实施例十一的第二节点做进一步具体描述。如图11所示，为根据本实施例的第二节点的结构示意图。本实施例的第二节点除了如实施例十一中所描述的第一判断单元115和第一发送单元116之外，还包括第二发送单元117和第一接收单元118。
其中，第二发送单元117用于向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；第一接收单元118用于接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数。
若包括确定单元114，则如图11所示，第一接收到单元118与确定单元114连接。
本实施例中，若第二终端为切换至第一节点的终端，即与第二节点断开并与第一节点建立连接的终端，则第二节点需在第二终端与第二节点断开之前发送上报第二接入参数的指令；若在双连接场景中，第二终端连接至第一结点，但并不与第二结点断开，则第二节点可以在任意时刻向第二终端发送上报第二接入参数的指令。具体过程与上述实施例一致，在此不 再赘述。
根据本实施例的第二节点，通过触发第二终端上报第二接入参数的流程，并通过统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十三
本实施例对实施例十一的第二节点做进一步具体描述。如图11所示，为根据本实施例的第二节点的结构示意图。本实施例的第二节点除了如实施例十一中所描述的第一判断单元115和第一发送单元116之外，还包括第二发送单元117和第一接收单元118。
本实施例的第二发送单元117用于向第一节点发送上报第二接入参数的指令，以使第一节点向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；第一接收单元118用于接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数。
根据本实施例的第二节点，通过第一节点转发上报第二接入参数的指令以及通过第一节点接收转发的第二接入参数的指令，并通过统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十四
本实施例对实施例十一的第二节点做进一步具体描述。如图11所示，为根据本实施例的第二节点的结构示意图。本实施例的第二节点除了如实施例十一中所描述的第一判断单元115和第一发送单元116之外，还包括第二发送单元117和第一接收单元118。
本实施例的第二发送单元117用于向第一节点发送上报第二接入参数的指令；第一接收单元118用于接收第一节点发送的第二接入参数，并存储该第二接入参数。
本实施例的第二接入参数具体为定时提前量。由于该定时提前量是第一节点下发至第二终端的，所以第一节点本身就可以获知该定时提前量，因此，第二节点可以直接从第一节点处获取该第二接入参数。
本实施例中，第二节点通过直接从第一节点处获取第二接入参数，并通过统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十五
本实施例对实施例十一的第二节点做进一步具体描述。如图11所示，为根据本实施例的第二节点的结构示意图。本实施例的第二节点除了如实施例十一中所描述的第一判断单元115和第一发送单元116之外，还包括第二发送单元117和第一接收单元118。
本实施例的第二发送单元117用于向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；第一接收单元118用于接收第二终端上报的第二接入参数.
本实施例描述的情况属于双连接场景，即，第一节点直接向第二终端发送上报第二接入参数的指令，并接收第二终端直接上报的第二接入参数。具体操作与上述实施例一致，在此不再赘述。
本实施例中，第二节点通过直接从第二终端处获取第二接入参数，并通过统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十六
本实施例提供一种第一终端，用于执行上述实施例的终端建立连接的方法。如图12所示，为根据本实施例的第一终端的结构示意图。
本实施例的第一终端包括第二接收单元121和第一连接单元122。其 中，第二接收单元121用于接收第二节点发送的第一接入参数，第一接入参数是第二节点预先存储的与第一节点对应的第一接入参数，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端，第一节点为与第二节点的小区相邻的小区的控制节点；第一连接单元122用于根据第一连接参数连接至第一节点。
第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端。
该第一终端的具体操作方式与上述实施例一致，在此不再赘述。
根据本实施例的第一终端，通过接收第二节点下发的第一接入参数并根据该第一接入参数连接至第一节点，这样就尽量避免了第一终端获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十七
本实施例提供一种第二终端，用于执行上述实施例的终端建立连接的方法。
如图13所示，本实施例的第二终端包括：第三接收单元131、第一获取单元132和第二连接单元133。
其中，第三接收单元131用于接收当前连接的第二节点发送的上报第二接入参数的指令，第二终端为需连接至第一节点的终端，第一节点为与第二节点的小区相邻的小区的控制节点；第一获取单元132用于获取第二接入参数；第二连接单元133用于根据第二接入参数连接至第一节点，并通过第一节点向第二节点上报第二接入参数或者直接向第二节点上报第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
本实施例的第二终端的具体操作方法与上述实施例一致，在此不再赘述。
根据本实施例的第二终端，通过向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中，在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例十八
本实施例提供一种第二终端，用于执行上述实施例的终端建立连接的方法。
如图14所示，本实施例的第二终端包括：第四接收单元141、第二获取单元142和第三连接单元143。
本实施例中的第四接收单元141用于接收当前连接的第一节点发送的上报第二接入参数的指令，第二接入参数是第一节点向第二节点发送的，第二节点为第二终端与第一节点建立连接之前第二终端连接的节点，第一节点为与第二节点的小区相邻的小区的控制节点；第二获取单元142用于获取第二接入参数；第三连接单元143用于通过第一节点向第二节点发送第二接入参数或者第二终端直接向当前连接的第二节点发送第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
根据本实施例的第二终端，通过向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中，在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生 的延迟，提高了用户体验。
实施例十九
本实施例提供一种第二节点，用于执行上述实施例的终端建立连接的方法。
如图15所示，为根据本实施例的第二节点的结构示意图。该第二节点包括：至少一个第一处理器151，以及第一存储器152，第一存储器151用于存储可执行程序代码，其中，第一处理器152通过读取第一存储器中存储的可执行程序代码来运行与可执行程序代码对应的程序，以用于：
判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与第一节点对应的第一接入参数，第一节点为与第二节点的小区相邻的小区的控制节点，第一终端当前连接第二节点，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端；
向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
可选地，在获取预先存储的与第一节点对应的第一接入参数之前，第一处理器152还通过读取第一存储器151中存储的可执行程序代码来运行与可执行程序代码对应的程序，以用于：向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数；或者
第二节点向第一节点发送上报第二接入参数的指令，以使第一节点向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；第二节点接收第一节点发送的第二终端上报的第二接入参数，并存储该第二接入参数；或者
第二节点向第一节点发送上报第二接入参数的指令；第二节点接收第一节点发送的第二接入参数，并存储该第二接入参数；或者
第二节点向第二终端发送上报第二接入参数的指令，第二终端为连接至第一节点的终端；第二节点接收第二终端上报的第二接入参数。
可选地，在获取预先存储的与第一节点对应的第一接入参数之前，第一处理器152还通过读取第一存储器151中存储的可执行程序代码来运行 与可执行程序代码对应的程序，以用于：
第二节点连续获取与第一节点对应的N个第二接入参数，其中，N为正整数；
第二节点若确定N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与第一节点对应的第一接入参数。
其中，第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
本实施例的第二节点的具体操作方式与上述实施例一致，在此不再赘述。
根据本实施例的第二节点，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例二十
本实施例提供一种第一终端，用于执行上述实施例的终端建立连接的方法。
如图16所示，为根据本实施例的第一终端的结构示意图。该第一终端包括：至少一个第二处理器161，以及第二存储器162，第二存储器161用于存储可执行程序代码，其中，第二处理器162通过读取第二存储器162中存储的可执行程序代码来运行与可执行程序代码对应的程序，以用于：
接收第二节点发送的第一接入参数，第一接入参数是第二节点预先存储的与第一节点对应的第一接入参数，第一节点为与第二节点的小区相邻的小区的控制节点，第一接入参数是根据第二终端上报的第二接入参数统计的，第二终端为连接至第一节点的终端；
根据第一连接参数连接至第一节点。
其中，第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端。
本实施例的第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
本实施例的第一终端的具体操作方法与上述实施例一致，在此不再赘述。
根据本实施例的终端建立连接的方法，通过预先统计第二接入参数以生成第一接入参数并进行存储，然后在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先存储的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例二十一
本实施例提供一种第二终端，用于执行上述实施例的终端建立连接的方法。
如图17所示，为根据本实施例的第二终端的结构示意图。该第二终端包括：至少一个第三处理器171，以及第三存储器172，第三存储器171用于存储可执行程序代码，其中，第三处理器172通过读取第三存储器172中存储的可执行程序代码来运行与可执行程序代码对应的程序，以用于：
接收当前连接的第二节点发送的上报第二接入参数的指令，第二终端为需连接至第一节点的终端；
获取第二接入参数；
根据第二接入参数连接至第一节点，第一节点为与第二节点的小区相邻的小区的控制节点，并通过第一节点向第二节点上报第二接入参数或者直接向第二节点上报第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
其中，第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端。
本实施例的第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
根据本实施例，由第二终端向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中， 在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
实施例二十二
本实施例提供一种第二终端，用于执行上述实施例的终端建立连接的方法。
如图18所示，为根据本实施例的第二终端的结构示意图。该第二终端包括：至少一个第四处理器181，以及第四存储器182，第四存储器181用于存储可执行程序代码，其中，第四处理器182通过读取第四存储器182中存储的可执行程序代码来运行与可执行程序代码对应的程序，以用于：
接收当前连接的第一节点发送的上报第二接入参数的指令，第二接入参数是第一节点向第二节点发送的，第二节点为第二终端与第一节点建立连接之前第二终端连接的节点，第一节点为与第二节点的小区相邻的小区的控制节点；
获取第二接入参数；
通过第一节点向第二节点发送第二接入参数或者第二终端直接向当前连接的第二节点发送第二接入参数，以使第二节点统计第二接入参数以生成第一接入参数，并在第二节点判断出当前连接的第一终端需要与第一节点建立连接时，获取预先存储的与第一节点对应的第一接入参数，向第一终端下发第一接入参数，以使第一终端根据第一接入参数连接至第一节点。
其中，第二终端具体为与第二节点断开连接后连接至第一节点的终端或者与第二节点保持连接并连接至第一节点的终端。
本实施例的第一接入参数包括定时提前量和/或终端发射功率，第二接入参数包括定时提前量和/或终端发射功率。
根据本实施例，由第二终端向第二节点发送第二接入参数以供第二节点统计第二接入参数生成第一接入参数，并进行存储，后续通信过程中，在当前连接的第一终端需连接至第一节点时，获取与该第一节点对应的预先统计的第一接入参数，直接下发至第一终端进行利用，这样就尽量避免 了获取第一接入参数所带来的延时，进而减小终端在变换小区时产生的延迟，提高了用户体验。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (34)

  1. 一种终端建立连接的方法，其特征在于，包括：
    第二节点判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
    所述第二节点向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  2. 根据权利要求1所述的终端建立连接的方法，其特征在于，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
    所述第二节点向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
    所述第二节点接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
  3. 根据权利要求1所述的终端建立连接的方法，其特征在于，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
    所述第二节点向所述第一节点发送上报第二接入参数的指令，以使所述第一节点向第二终端发送所述上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
    所述第二节点接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
  4. 根据权利要求1所述的终端建立连接的方法，其特征在于，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
    所述第二节点向所述第一节点发送上报第二接入参数的指令；
    所述第二节点接收所述第一节点发送的第二接入参数，并存储该第二接入参数。
  5. 根据权利要求1所述的终端建立连接的方法，其特征在于，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
    所述第二节点向第二终端发送上报第二接入参数的指令，所述第二终 端为连接至所述第一节点的终端；
    所述第二节点接收所述第二终端上报的所述第二接入参数。
  6. 根据权利要求1所述的终端建立连接的方法，其特征在于，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
  7. 根据权利要求1-6中任一项所述的终端建立连接的方法，其特征在于，在所述获取预先存储的与所述第一节点对应的第一接入参数之前，还包括：
    所述第二节点连续获取与所述第一节点对应的N个第二接入参数，其中，N为正整数；
    所述第二节点若确定所述N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与所述第一节点对应的第一接入参数。
  8. 根据权利要求1-7中任一项所述的终端建立连接的方法，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  9. 一种终端建立连接的方法，其特征在于，包括：
    第一终端接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端,所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
    所述第一终端根据所述第一连接参数连接至所述第一节点。
  10. 根据权利要求9所述的终端建立连接的方法，其特征在于，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
  11. 根据权利要求9或10所述的终端建立连接的方法，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  12. 一种终端建立连接的方法，其特征在于，包括：
    第二终端接收当前连接的第二节点发送的上报第二接入参数的指令， 所述第二终端为需连接至第一节点的终端；
    第二终端获取所述第二接入参数；
    第二终端根据所述第二接入参数连接至第一节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  13. 根据权利要求12所述的终端建立连接的方法，其特征在于，所述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
  14. 根据权利要求12或13所述的终端建立连接的方法，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  15. 一种终端建立连接的方法，其特征在于，包括：
    第二终端接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
    第二终端获取所述第二接入参数；
    第二终端通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  16. 根据权利要求15所述的终端建立连接的方法，其特征在于，所 述第二终端具体为与所述第二节点断开连接后连接至所述第一节点的终端或者与所述第二节点保持连接并连接至所述第一节点的终端。
  17. 根据权利要求15或16所述的终端建立连接的方法，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  18. 一种第二节点，其特征在于，包括：
    第一判断单元，用于判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
    第一发送单元，用于向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  19. 根据权利要求18所述的第二节点，其特征在于，还包括：
    第二发送单元，用于向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
    第一接收单元，用于接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
  20. 根据权利要求18所述的第二节点，其特征在于，还包括：
    第二发送单元，用于向所述第一节点发送上报第二接入参数的指令，以使所述第一节点向第二终端发送所述上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
    第一接收单元，用于接收第一节点发送的所述第二终端上报的第二接入参数，并存储该第二接入参数。
  21. 根据权利要求18所述的第二节点，其特征在于，还包括：
    第二发送单元，用于向所述第一节点发送上报第二接入参数的指令；
    第一接收单元，用于接收所述第一节点发送的第二接入参数，并存储该第二接入参数。
  22. 根据权利要求18所述的第二节点，其特征在于，还包括：
    第二发送单元，用于向第二终端发送上报第二接入参数的指令，所述第二终端为连接至所述第一节点的终端；
    第一接收单元，用于接收所述第二终端上报的所述第二接入参数。
  23. 根据权利要求18-22中任一项所述的第二节点，其特征在于，还包括确定单元，所述确定单元用于：
    连续获取与所述第一节点对应的N个第二接入参数，其中，N为正整数；
    若确定所述N个第二接入参数的值相等，则将该N个第二接入参数的值作为最终的与所述第一节点对应的第一接入参数。
  24. 根据权利要求18-23中任一项所述的第二节点，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  25. 一种第一终端，其特征在于，包括：
    第二接收单元，用于接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一结点为与所述第二节点的小区相邻的小区的控制节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
    第一连接单元，用于根据所述第一连接参数连接至所述第一节点。
  26. 根据权利要求25所述的第一终端，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  27. 一种第二终端，其特征在于，包括：
    第三接收单元，用于接收当前连接的第二节点发送的上报第二接入参数的指令，所述第二终端为需连接至第一节点的终端，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
    第一获取单元，用于获取所述第二接入参数；
    第二连接单元，用于根据所述第二接入参数连接至所述第一节点，并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入 参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  28. 根据权利要求27所述的第二终端，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  29. 一种第二终端，其特征在于，包括：
    第四接收单元，用于接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
    第二获取单元，用于获取所述第二接入参数；
    第三连接单元，用于通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  30. 根据权利要求29所述的第二终端，其特征在于，所述第一接入参数包括定时提前量和/或终端发射功率，所述第二接入参数包括定时提前量和/或终端发射功率。
  31. 一种第二节点，其特征在于，包括：至少一个第一处理器，以及第一存储器，所述第一存储器用于存储可执行程序代码，其中，所述第一处理器通过读取所述第一存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
    判断当前连接的第一终端是否需要与第一节点建立连接，若判断结果为是，则获取预先存储的与所述第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一终端当前 连接所述第二节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
    向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  32. 一种第一终端，其特征在于，包括：至少一个第二处理器，以及第二存储器，所述第二存储器用于存储可执行程序代码，其中，所述第二处理器通过读取所述第二存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
    接收第二节点发送的第一接入参数，所述第一接入参数是所述第二节点预先存储的与第一节点对应的第一接入参数，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，所述第一接入参数是根据第二终端上报的第二接入参数统计的，所述第二终端为连接至所述第一节点的终端；
    根据所述第一连接参数连接至所述第一节点。
  33. 一种第二终端，其特征在于，包括：至少一个第三处理器，以及第三存储器，所述第三存储器用于存储可执行程序代码，其中，所述第三处理器通过读取所述第三存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
    接收当前连接的第二节点发送的上报第二接入参数的指令，所述第二终端为需连接至第一节点的终端；
    获取所述第二接入参数；
    根据所述第二接入参数连接至第一节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点，并通过所述第一节点向所述第二节点上报所述第二接入参数或者直接向所述第二节点上报所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
  34. 一种第二终端，其特征在于，包括：至少一个第四处理器，以及 第四存储器，所述第四存储器用于存储可执行程序代码，其中，所述第四处理器通过读取所述第四存储器中存储的可执行程序代码来运行与所述可执行程序代码对应的程序，以用于：
    第二终端接收当前连接的第一节点发送的上报第二接入参数的指令，所述第二接入参数是第一节点向所述第二节点发送的，所述第二节点为所述第二终端与所述第一节点建立连接之前所述第二终端连接的节点，所述第一节点为与所述第二节点的小区相邻的小区的控制节点；
    第二终端获取所述第二接入参数；
    第二终端通过所述第一节点向所述第二节点发送所述第二接入参数或者第二终端直接向当前连接的所述第二节点发送所述第二接入参数，以使所述第二节点统计所述第二接入参数以生成第一接入参数，并在所述第二节点判断出当前连接的第一终端需要与所述第一节点建立连接时，获取预先存储的与所述第一节点对应的第一接入参数，向所述第一终端下发所述第一接入参数，以使所述第一终端根据所述第一接入参数连接至所述第一节点。
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