WO2017193842A1 - 小区切换方法、装置、***及计算机存储介质 - Google Patents

小区切换方法、装置、***及计算机存储介质 Download PDF

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Publication number
WO2017193842A1
WO2017193842A1 PCT/CN2017/082782 CN2017082782W WO2017193842A1 WO 2017193842 A1 WO2017193842 A1 WO 2017193842A1 CN 2017082782 W CN2017082782 W CN 2017082782W WO 2017193842 A1 WO2017193842 A1 WO 2017193842A1
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Prior art keywords
time information
terminal
subframe
cell
target cell
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PCT/CN2017/082782
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English (en)
French (fr)
Inventor
陈中明
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中兴通讯股份有限公司
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Publication of WO2017193842A1 publication Critical patent/WO2017193842A1/zh

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    • 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
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • 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
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a cell handover method, apparatus, system, and computer storage medium.
  • the UE in order to ensure the quality of the service and give the user a good service experience, after the UE establishes a connection with the network in a certain cell, the UE still needs to measure the signal quality of the serving cell and the neighboring cell, and select an appropriate cell. Switch to meet mobility requirements.
  • the embodiment of the invention provides a cell handover method, device, system and computer storage medium, so as to at least solve the problem that the handover efficiency is low due to a long service interruption time in the cell handover process.
  • An embodiment of the present invention provides a cell handover method, including: receiving, for indicating, a terminal from a source Switching a handover command to the target cell by the cell; controlling the terminal to perform communication in the source cell according to the first time information, and controlling the terminal to perform communication in the target cell according to the second time information; After the communication completes the access of the terminal to the target cell, it is determined that the terminal handover is successful.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the cell switching method according to the embodiment of the present invention.
  • the embodiment of the present invention further provides a cell handover method, including: transmitting, to a terminal, a handover command for instructing the terminal to switch from a source cell to a target cell; and in the source cell and the terminal according to the first time information. And performing communication; when the access of the terminal to the target cell is completed by communication in the target cell, disconnecting from the terminal is performed.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the cell switching method according to the embodiment of the present invention.
  • the embodiment of the present invention further provides a cell switching apparatus, including: a receiving unit, configured to receive a handover command for instructing a terminal to switch from a source cell to a target cell; and a control unit configured to control the terminal according to the first time information
  • the source cell performs communication, and controls the terminal to perform communication in the target cell according to the second time information.
  • the switching unit is configured to complete the access of the terminal to the target cell by using the communication in the target cell. And determining that the terminal is successfully switched.
  • An embodiment of the present invention further provides a cell switching apparatus, including: a sending unit, configured to send, to a terminal, a handover command for instructing the terminal to switch from a source cell to a target cell; and a communication unit, where the first time information is The source cell communicates with the terminal; the switching unit is configured to disconnect the terminal after completing the access of the terminal to the target cell by communication in the target cell.
  • a sending unit configured to send, to a terminal, a handover command for instructing the terminal to switch from a source cell to a target cell
  • a communication unit where the first time information is The source cell communicates with the terminal
  • the switching unit is configured to disconnect the terminal after completing the access of the terminal to the target cell by communication in the target cell.
  • the embodiment of the present invention further provides a cell handover system, including a base station and a terminal corresponding to the source cell, where the base station corresponding to the source cell sends a handover command for instructing the terminal to switch from the source cell to the target cell to the terminal;
  • the terminal performs communication in the source cell according to the first time information, and performs communication on the target cell according to the second time information; the terminal completes the connection of the terminal to the target cell according to the communication in the target cell. After entering, it is determined that the above terminal handover is successful.
  • the cell handover method, device, system, and computer storage medium interact with the source cell and the target cell respectively by using time division multiplexing in the process of the terminal switching from the source cell to the target cell, that is, Performing communication in the source cell according to the first time information in the handover command, and performing communication on the target cell according to the second time information in the handover command, so that before the terminal successfully switches to the target cell, the connection with the source cell can be maintained and executed.
  • the random access process to the target cell is used to ensure that the terminal service is not interrupted, and the terminal service that interrupts the current execution needs to be interrupted when the cell is switched to the terminal of the normal terminal or the terminal with low connection capability.
  • the problem of low handover efficiency caused by a long time further achieves an effect of improving cell handover efficiency.
  • 1 is a schematic diagram of a protocol stack between a user equipment and a base station in the related art
  • FIG. 3 is a schematic flowchart 1 of an implementation process of a cell handover method according to an embodiment of the present invention
  • FIG. 4 is an interaction flowchart 1 of a cell handover method according to an application example of the present invention.
  • FIG. 5 is a schematic structural diagram of a structure of a radio frame according to an embodiment of the present invention.
  • FIG. 6 is a second flowchart of a cell handover method according to an application example of the present invention.
  • FIG. 7 is a second schematic diagram of an implementation process of a cell handover method according to an embodiment of the present invention.
  • FIG. 8 is a first schematic structural diagram of a cell switching apparatus according to an embodiment of the present invention.
  • FIG. 9 is a second schematic structural diagram of a cell switching apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a structure of a cell switching system according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a protocol stack between a user equipment or a user equipment (UE) and a base station (eNodeB, eNB) according to the related art.
  • a UE in a Long Term Evolution (LTE) system and The protocol stack of the inter-eNB interface is divided into the following protocol layers from the bottom to the top: physical layer (PHY), media access control layer (MAC), and radio link control layer (Radio Link Control, RLC), Packet Data Convergence Protocol (PDCP), Radio Resource Control (RRC).
  • PHY physical layer
  • MAC media access control layer
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • RRC Radio Resource Control
  • the PHY layer mainly transmits information to the MAC or higher layer through the transport channel; the MAC layer mainly provides data transmission and is responsible for radio resource allocation through the logical channel, and completes hybrid automatic repeat request (Hybrid ARQ, HARQ), scheduling (Scheduling, SCH) , priority processing and multiplexing demultiplexing (MUX) and other functions; RLC layer mainly provides segmentation and retransmission services for user and control data; PDCP layer mainly performs user data transmission to RRC or user plane; RRC The layer mainly completes broadcasting, paging, radio resource control connection management, radio bearer control, mobility function, terminal measurement report and control. Before the UE sends data to the base station, it needs to obtain uplink synchronization with the base station, that is, acquire the time advance (TA), and the UE passes the random access process. To achieve this goal, this process is implemented at the MAC layer.
  • TA time advance
  • FIG. 2 is a flowchart of a handover according to the related art, as shown in FIG. 2, steps S202-S210.
  • the UE 202 receives a command on the network side and needs to perform handover (point A in FIG. 2), the user plane is reset.
  • the algorithm performs random access in the target cell 206. After the random access is completed, the UE can communicate with the target cell 206 (point B in FIG. 2), and the UE 202 sends a handover complete command to the target cell 206. When the UE 202 performs a random access procedure in the target cell 206, it needs to disconnect the data communication with the source cell 204.
  • the interruption time is the time occupied by the random access procedure, that is, the random access starts. And the time between completion.
  • the embodiment of the present invention interacts with the source cell and the target cell by using a time division multiplexing manner, that is, performs communication in the source cell according to the first time information in the handover command, and performs communication in the target cell according to the second time information in the handover command. Therefore, before the terminal successfully switches to the target cell, the connection with the source cell can be maintained, and a random access procedure to the target cell is performed to ensure that the terminal service is not interrupted, thereby overcoming the prior art to the ordinary terminal.
  • the terminal that supports the lower connection capability performs the cell handover, the terminal service that is currently executed needs to be interrupted, and the handover efficiency caused by the long service interruption time is low, and the effect of improving the cell handover efficiency is further achieved.
  • FIG. 3 is a schematic flowchart 1 of an implementation process of a cell handover method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:
  • S301 Receive a handover command for instructing a terminal to switch from a source cell to a target cell.
  • the control terminal performs communication in the source cell according to the first time information, and the control terminal performs communication in the target cell according to the second time information.
  • the cell handover method may be, but is not limited to, applied to a terminal of a cell handover system.
  • the terminal receives a handover command for instructing the terminal to switch from the source cell to the target cell, where the handover command carries first time information used to indicate that the terminal is used by the source cell, and is used to indicate that the terminal is in the The second time information used by the target cell; the terminal performs communication in the source cell according to the first time information, and performs communication in the target cell according to the second time information; after completing the terminal access to the target cell by communication in the target cell , to determine that the terminal is successfully switched.
  • the terminal receives a handover command for instructing the terminal to switch from the source cell to the target cell, where the handover command carries the first time information used to indicate the terminal used by the source cell, or is used to indicate the terminal.
  • Second time information used by the target cell the terminal performs communication in the source cell according to the first time information, and performs communication in the target cell according to the second time information; completes terminal access to the target cell by communication in the target cell After that, it is determined that the terminal is successfully switched.
  • the source cell and the target cell are respectively interacted by using a time division multiplexing manner, that is, according to the first in the handover command.
  • the time information is communicated in the source cell, and the second time information in the handover command is used to communicate in the target cell, so that before the terminal successfully switches to the target cell, the connection with the source cell can be maintained, and the target cell also communicates.
  • the second time information when the handover command carries the first time information used to indicate the terminal used by the source cell, the second time information may be determined according to a predetermined algorithm according to the first time information.
  • the method further includes: acquiring, according to the handover command, the subframe indicated by the first time information in each radio frame, and The subframe indicated by the second time information in the radio frames.
  • the first time information in the foregoing handover command may be, but is not limited to, a subframe that is used between the base stations corresponding to the source cell in each radio frame, and the foregoing switching is performed.
  • the second time information in the command may be, but is not limited to, a subframe that is usable between base stations corresponding to the target cell in each radio frame.
  • the manner of configuring the subframe in each radio frame may include, but is not limited to, at least one of the following:
  • the subframe allocation manner is used to indicate a subframe indicated by the first time information in each radio frame, and a second subframe in each radio frame The subframe indicated by the time information.
  • the subframe allocation manner indicated by the predetermined bit may be a pre-configured manner, such as bit 00 identification mode 1, 01 identification mode 2, and 10 identification mode.
  • the pre-configured manner may include, but is not limited to, a predetermined configuration mode, a default configuration mode, and a random configuration mode.
  • configuring the subframe according to the foregoing predetermined configuration manner may include but is not limited to At least one of the following:
  • the subframe indicated by the first time information includes: an even-numbered subframe in each radio frame, and the subframe indicated by the second time information includes: an odd-numbered subframe in each radio frame; or, the first time The subframe indicated by the information includes: an odd-numbered subframe in each radio frame; and the subframe indicated by the second time information includes: an even-numbered subframe in each radio frame;
  • each radio frame is repeated, the source cell adopts an even-numbered subframe of each radio frame, the target cell uses an odd-numbered subframe of each radio frame, or vice versa, the source cell uses an odd-numbered subframe of each radio frame, The target cell uses the even numbered subframe of each radio frame.
  • the subframe indicated by the first time information includes: the first five subframes in each radio frame, and the subframe indicated by the second time information includes: the last five subframes in each radio frame; or, the first The subframe indicated by the time information includes: the last five subframes in each radio frame, and the subframe indicated by the second time information includes: the first five subframes in each radio frame.
  • each radio frame is repeated, the source cell adopts the first five subframes of each radio frame, the target cell uses the last five subframes of each radio frame, or vice versa, the source cell uses the last five subframes of each radio frame, The target cell uses the first five subframes of each radio frame.
  • the subframe indicated by the first time information and the subframe indicated by the second time information are alternately arranged according to a predetermined subframe width.
  • alternate configurations are repeated in a predetermined subframe width in each radio frame, or in every two or every three or four subframes of a radio frame.
  • the predetermined subframe width includes at least one of the following: two subframes and four subframes.
  • the alternate configuration in every two radio frames may include, but is not limited to, at least one of: starting from an odd-numbered frame of every two radio frames, a subframe indicated by the first time information, and a second
  • the subframes indicated by the time information are alternately arranged according to a predetermined subframe width, or, from the even-numbered frames of every two radio frames, the subframe indicated by the first time information and the subframe indicated by the second time information are scheduled.
  • the sub-frame widths are alternately configured.
  • every two radio frames are repeated, the first two subframes of the even-numbered frame are used by the source cell, the next two subframes are used by the target cell, and so on; or the first two subframes of the even-numbered frame are used by the target cell, The next two subframes are used by the source cell, and so on; or, the first two subframes of the odd-numbered frame are used by the source cell, the next two subframes are used by the target cell, and so on; or the first two subframes of the odd-numbered frame
  • the frame is used by the target cell, the next two subframes are used by the source cell, and so on.
  • every two radio frames are repeated, the first four subframes of the even-numbered frame are used by the source cell, the next four subframes are used by the target cell, and so on; or the first four subframes of the even-numbered frame are used by the target cell.
  • the next four subframes are used by the source cell, and so on; or, the first four subframes of the odd-numbered frame are used by the source cell, the next four subframes are used by the target cell, and so on; or the first four of the odd-numbered frames
  • the subframes are used by the target cell, the next four subframes are used by the source cell, and so on.
  • the method after receiving the handover command for instructing the terminal to switch from the source cell to the target cell, the method further includes: adjusting the conversion parameter of the terminal in the predetermined subframe.
  • the conversion parameter of the terminal is adjusted in the predetermined subframe, but is not limited to: determining whether the handover condition is met according to the handover command, where the handover condition includes at least one of the following: the source cell and the target cell are in the same frequency.
  • the cell has the same bandwidth as the source cell and the target cell; when the handover condition is not met, the conversion parameters of the terminal are adjusted in a predetermined subframe.
  • adjusting the conversion parameters of the terminal in the predetermined subframe includes:
  • the conversion parameter when switching from the source cell to the target cell, the conversion parameter needs to be adjusted, so that the terminal can perform the corresponding service normally;
  • the conversion parameters need to be adjusted so that the terminal can perform the corresponding service normally.
  • the base station of the cell corresponding to the indicated subframe is interacted according to the time division multiplexing mode, corresponding parameter conversion is required.
  • corresponding frequency conversion is required.
  • corresponding bandwidth conversion is required.
  • the terminal 402 performs normal data communication with the base station corresponding to the source cell 404.
  • the terminal 402 receives the handover command sent by the network side (the base station corresponding to the source cell 404) (as shown in point A in FIG. 4), and the terminal 402 obtains the subframe or time information that the terminal can use in the source cell 404 by using the handover command.
  • step S406 the terminal 402 performs a handover process.
  • step S406-1 the terminal 402 performs normal data transmission and reception in the source cell 404 through a usable subframe or time.
  • step S406-2 the terminal 402 passes the usable sub-component in the target cell 406. Perform a random access procedure at frame or time;
  • the terminal 402 can perform data communication with the target cell 406 (as shown in point B in FIG. 4);
  • the terminal 402 sends a handover complete command to the target cell 406, and performs user plane reset (including MAC layer reset and PDCP, RLC layer reconstruction), disconnects the source cell, and applies the configuration of the target cell, so that all the target cells are located. Subframes or time can be used normally.
  • user plane reset including MAC layer reset and PDCP, RLC layer reconstruction
  • the subframe allocated in the source cell and the target cell may include at least one of the following conditions as shown in FIG. 5:
  • the above method can be expressed by an indication bit, such as bit 00 identification mode 1, 01 identification mode 2, 10 identification mode three, 11 identification mode four, and so on.
  • each radio frame is repeated, or every two or three or four waiting radio frame repetitions, and each time unit, such as each sub-frame, is assigned an indication identifier bit, and the identifier is 0 or 1 to the source cell. If used, the identifier is 1 or 0, which is used for the target cell. This can achieve random allocation.
  • the terminal interacts with the source cell and the target cell by using a time division multiplexing manner, that is, according to the first time in the handover command, in the process of the terminal switching from the source cell to the target cell.
  • Information is communicated in the source cell, according to the handover command
  • the second time information is communicated in the target cell, so that before the terminal successfully switches to the target cell, the connection with the source cell can be maintained, and the target cell is also communicated to ensure that the terminal service is not interrupted, thereby overcoming the present situation.
  • the method further includes:
  • the manner of configuring the subframe in each radio frame may include, but is not limited to, at least one of the following:
  • each of the subframes in the radio frame is configured with a corresponding identifier to indicate an available cell.
  • the corresponding command is obtained by acquiring the handover command.
  • the identifier of the second time information and the second time information in the radio frame are respectively obtained.
  • the subframe allocation manner is used to indicate a subframe indicated by the first time information in each radio frame, and a second subframe in each radio frame The subframe indicated by the time information.
  • the radio frame is indicated as a subframe configured for the source cell and the target cell according to the mode shown in FIG. 5; when the predetermined bit indication is 01, the radio frame is indicated to be According to the mode 2 shown in FIG. 5, the subframe configured for the source cell and the target cell; when the predetermined bit indicates 10, the wireless frame is indicated as the source cell and the target cell according to the mode 3 shown in FIG. Subframe; when the predetermined bit is indicated as 11, it indicates that the radio frame is pressed In the manner shown in FIG. 5, the subframes configured for the source cell and the target cell are four. It should be noted that, as the mode pattern is increased, the number of bits of the predetermined bit may be increased. For example, a predetermined bit of 3 bits is used to indicate eight configuration modes. The specific process is as described above, and details are not described herein again.
  • the subframes configured as the source cell and the target cell are respectively obtained according to the handover command, so that the terminal respectively performs time division multiplexing on the corresponding different subframes, and the service is not interrupted. Switching from the source cell to the target cell, thereby ensuring the efficiency of cell handover.
  • the subframe indicated by the first time information includes: an even-numbered subframe in each radio frame or an odd-numbered subframe in each radio frame; and the subframe indicated by the second time information includes : odd-numbered subframes in each radio frame or even-numbered subframes in each radio frame.
  • the subframe indicated by the first time information and the subframe indicated by the second time information are alternately configured according to a predetermined subframe width.
  • alternate configurations are repeated in a predetermined subframe width in each radio frame, or in every two or every three or four subframes of a radio frame.
  • the predetermined subframe width includes at least one of the following: two subframes and four subframes.
  • the subframe indicated by the first time information and the subframe indicated by the second time information are alternately configured according to a predetermined subframe width, or
  • the even-numbered frames of the two radio frames start, and the subframe indicated by the first time information and the subframe indicated by the second time information are alternately arranged according to a predetermined subframe width.
  • the corresponding subframe is configured for the source cell and the target cell in different manners to ensure that the service is not interrupted during the process of the terminal switching from the source cell to the target cell, thereby reducing the time for service interruption.
  • control terminal performs communication in the source cell according to the first time information, and controls the terminal to perform communication in the target cell according to the second time information, including:
  • the control terminal performs communication in the source cell on the subframe indicated by the first time information.
  • the control terminal performs a random access procedure to the target cell on the subframe indicated by the second time information.
  • the controlling the terminal to perform the random access process to the target cell on the subframe indicated by the second time information includes:
  • the random access preamble information is sent to the target cell in the target subframe that is found on the subframe indicated by the second time information, where the random access preamble information carries the predetermined identifier that is configured by the target cell to the terminal.
  • the subframe in which the target cell performs the random access procedure is a predetermined target subframe, and not all the subframes may perform a random access procedure. Therefore, in the embodiment of the present invention, the terminal is in the second time information.
  • the method may include, but is not limited to, searching for the target subframe for performing random access on the subframe indicated by the second time information to the target cell.
  • the random access preamble information is sent, where the random access preamble information carries a predetermined identifier that is configured by the target cell to the terminal. Therefore, the subframes that the terminal accesses the target cell are further searched from the selected candidate subframes, so that the random access procedure to the target cell is completed on the subframe.
  • the method further includes:
  • adjusting the conversion parameters of the terminal in the predetermined subframe includes:
  • the source cell and the target cell are different frequency cells (the working frequency points are different) or the cells with different working bandwidths (the working frequency points are the same),
  • it is not limited to performing corresponding adjustments on the conversion parameters on a predetermined subframe, for example, converting the operating frequency, or adjusting the operating bandwidth and the like.
  • At least one of the following is also included:
  • the deletion of the corresponding content in the handover command is automatically performed, thereby avoiding performing the deletion operation by multiple signaling interactions, thereby further ensuring the handover efficiency.
  • the interaction overhead of the handover process is greatly reduced.
  • the cell 1 (source cell) is a cell of LTE, and the center carrier frequency is f1.
  • the cell 2 (target cell) is a cell of LTE, which is a neighboring cell of cell 1, and the center carrier frequency is f2. That is, the source cell and the target cell are inter-frequency cells.
  • Step 1 The current UE is in the connected state in the cell 1.
  • the network side sends a measurement task (Measurement Control) that the neighboring area signal quality is better than the serving cell's trigger event (A3), and the measurement object carrier frequency is f2.
  • Step 2 The UE performs the measurement, and finds that the cell 2 on the f2 meets the trigger condition of the event A3, and reports the measurement report to the network side.
  • Step 3 The network side decides to let the UE handover (Handover) to the cell 2, and send the handover standard. Handover request is given to cell 2.
  • Step 4 After receiving the handover preparation command, the cell 2 allocates a preamble, which is sent to the cell 1 in a handover command (Handover Request ack), where the handover command further includes the temporary allocation of the terminal allocated by the cell 2 in the cell 2 Identification (Cell-Radio Network Temp Identity, C-RNTI for short), information of cell 2 (for example, related information including f2 and f2, and other information of cell 2), and cell 1 forwards the handover command to the UE (RRC reconfiguration) (Handover)).
  • a handover command further includes the temporary allocation of the terminal allocated by the cell 2 in the cell 2 Identification (Cell-Radio Network Temp Identity, C-RNTI for short), information of cell 2 (for example, related information including f2 and f2, and other information of cell 2)
  • cell 1 forwards the handover command to the UE (RRC reconfiguration) (Handover)).
  • Step 5 After receiving the handover command, the UE learns that the subframe or time information of the active cell, that is, the cell 1 is, for example, the first five subframes of each radio frame, and the subframe or time information of the target cell, that is, the cell 2 is, for example, each The last five subframes of the radio frame, that is, mode four, know that it is necessary to perform seamless handover of time division multiplexing.
  • the terminal performs frequency conversion on the first subframe allocated to a certain cell, that is, at each In the first subframe of the first five subframes of the radio frame (time information allocated to the source cell), the terminal converts the working frequency point to the source cell (the subsequent four subframes can work in the source cell), in each radio frame The first subframe of the next five subframes (time information allocated to the target cell), the terminal converts the working frequency point to the target cell (the next four subframes can work in the target cell), and then starts normal data scheduling.
  • the terminal performs frequency conversion on the last subframe allocated to a certain cell, that is, the last subframe of the first five subframes of each radio frame (time information allocated to the source cell),
  • the terminal converts the working frequency point to the target cell (subsequent subframes are allocated to the target cell and therefore are to be converted), and the last subframe of the last five subframes of each radio frame (time information allocated to the target cell), the terminal
  • the working frequency is converted to the source cell (subsequent subframes are allocated to the source cell and therefore need to be converted), and then normal data scheduling begins.
  • the configuration of the related physical layer performs a random access procedure in a subframe that can be used by the cell 2 (the last five subframes of each radio frame), that is, the terminal sends a random access preamble (Message1) to the cell 2, and the message1 includes
  • the dedicated preamble provided by the cell 2 is a dedicated resource allocated by the cell 2 to the terminal.
  • the terminal performs normal data communication on the cell 1 using the subframes that the cell 1 can use (the first five subframes of each radio frame).
  • Step 6 After receiving the Message1, the cell 2 reserves resources for the UE, and responds to the UE with the message 2, including the authorization information (UL grant) transmitted by the TA and/or the UE on the uplink.
  • the authorization information UL grant
  • Step 7 After the UE receives the Message2, the collision-free random access procedure performed in the cell 2 ends, the UE obtains the downlink synchronization and the TA with the cell 2, and considers that the handover is successful, and the terminal completes the reset process of the user plane protocol by itself, and resets.
  • the subframes can be used normally, and the message 3 (HO complete) for indicating the completion of the handover is sent to the cell 2, the cell 2 notifies the core network to perform the path switch (Path Switch), and the cell 1 is indicated, and the UE has accessed the cell 2, The terminal disconnects communication with the cell 1 at the time. After receiving the indication, the cell 1 knows that the information of the subframe configured according to the time division multiplexing mode has expired.
  • the time allocation can be performed according to the configuration of the target cell random access.
  • the cell 1 (source cell) is a cell of LTE, and the center carrier frequency is f1.
  • the cell 2 (target cell) is a cell of LTE, which is a neighbor cell of cell 1, and the center carrier frequency is f1. That is, the source cell and the target cell are co-frequency cells.
  • Step 1 The current UE is in the connected state in the cell 1.
  • the network side sends a measurement task (Measurement Control) that the neighboring area signal quality is better than the serving cell's trigger event (A3), and the measurement object carrier frequency is f1.
  • Step 2 The UE performs the measurement, and finds that the cell 2 on the f1 meets the trigger condition of the event A3, and reports the measurement report to the network side.
  • Step 3 The network side decides to let the UE hand over to the cell 2, and sends a handover request (Handover request) to the cell 2.
  • a handover request (Handover request)
  • Step 4 After receiving the handover preparation command, the cell 2 allocates a preamble, which is sent to the cell 1 in a handover command (Handover Request ack), where the handover command further includes the temporary allocation of the terminal allocated by the cell 2 in the cell 2 Identification (Cell-Radio Network Temp Identity, C-RNTI for short), information of cell 2 (for example, related information including f2 and f2, and other information of cell 2), and cell 1 forwards the handover command to the UE (RRC reconfiguration) (Handover)).
  • a handover command further includes the temporary allocation of the terminal allocated by the cell 2 in the cell 2 Identification (Cell-Radio Network Temp Identity, C-RNTI for short), information of cell 2 (for example, related information including f2 and f2, and other information of cell 2)
  • cell 1 forwards the handover command to the UE (RRC reconfiguration) (Handover)).
  • Step 5 After receiving the handover command, the UE learns that the subframe or time information of the active cell, that is, the cell 1 is, for example, an even-numbered subframe of each radio frame, and the subframe or time information of the target cell, that is, the cell 2 is, for example, each The odd-numbered subframe of the radio frame, that is, mode one, knows that it is necessary to perform seamless switching of time division multiplexing,
  • the terminal sends a random access preamble (Message1) to the cell 2, and the Message1 includes a dedicated preamble provided by the cell 2, which is a dedicated resource allocated by the cell 2 to the terminal.
  • Message1 includes a dedicated preamble provided by the cell 2, which is a dedicated resource allocated by the cell 2 to the terminal.
  • the terminal performs normal data communication on the cell 1 using the subframes (the even-numbered subframes of each radio frame) that the cell 1 can use.
  • Step 6 After receiving the Message1, the cell 2 reserves resources for the UE, and responds to the UE with the message 2, including the authorization information (UL grant) transmitted by the TA and/or the UE on the uplink.
  • the authorization information UL grant
  • Step 7 After the UE receives the Message2, the collision-free random access procedure performed in the cell 2 ends, and the UE obtains the downlink synchronization and the TA with the cell 2, and the handover is considered successful.
  • the line completes the reset process of the user plane protocol, and the reset includes the MAC layer reset, the PDCP and the RLC layer reconstruction, and starts to communicate with the cell 2. All the subframes of the cell 2 can be used normally, and the Message3 (HO) for indicating the completion of the handover is sent. Complete) For cell 2, cell 2 notifies the core network to perform path switching (Path Switch), and indicates cell 1, the UE has accessed cell 2, and the terminal disconnects communication with cell 1 at this time. After receiving the indication, the cell 1 knows that the information of the subframe configured according to the time division multiplexing mode has expired.
  • the foregoing step 5 may be, but is not limited to, obtaining, after receiving the handover command, the subframe or time information of the active cell, that is, the cell 1 or the subframe or time information of the target cell, that is, the cell 2, such as each even-numbered radio frame.
  • the first two subframes are configured for cell 1
  • the next two subframes are configured for cell 2, and so on, that is, mode 2, knowing that seamless switching of time division multiplexing needs to be performed.
  • the UE learns the subframe or time information of the active cell, that is, the cell 1 or the subframe or time information of the target cell, that is, the cell 2, for example, the first four sub-frames of each even-numbered frame.
  • the frame is configured for cell 1, the next four subframes are configured for cell 2, and so on, that is, mode three.
  • the UE learns the subframe or time information of the active cell, that is, the cell 1 or the subframe or time information of the target cell, that is, the cell 2, for example, each radio frame is set to 0.
  • the bit indication is configured for use by the cell 1.
  • the bit indication set to 1 is configured for use by the cell 2.
  • the configuration is 00011111100, that is, for each radio frame, the subframes 0, 1, and 2 are configured for the cell 1; 3, 4, 5, 6.
  • Subframe No. 7 is configured for cell 2; subframes 8 and 9 are configured for cell 1.
  • the terminal since the source cell and the target cell are of the same frequency, the terminal does not need to perform frequency conversion, and therefore no time or subframe designation for frequency conversion is required. If the terminal needs to do other preparatory work, such as adjusting the working bandwidth, etc., the time of execution or the designation of the subframe, refer to the above example.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform.
  • hardware can also be used, but in many cases the former is a better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • FIG. 7 is a schematic flowchart 2 of the implementation process of the cell handover method according to the embodiment of the present invention. As shown in FIG. 7, the process includes the following steps:
  • the foregoing cell handover method may be, but is not limited to, being applied to a base station corresponding to a source cell of a cell handover system.
  • the base station corresponding to the source cell sends a handover command to the terminal to instruct the terminal to switch from the source cell to the target cell, where the handover command carries the first time information used to indicate the terminal used by the source cell, and And indicating, by the terminal, the second time information used by the terminal in the target cell; the base station corresponding to the source cell performs communication with the terminal in the source cell according to the first time information; and after the terminal completes the access to the target cell by the communication in the target cell, disconnects Connection to the terminal.
  • the base station corresponding to the source cell sends a handover command to the terminal for instructing the terminal to switch from the source cell to the target cell, where the handover command carries the first time information used to indicate that the terminal is used by the source cell, or And indicating, by the terminal, the second time information used by the terminal in the target cell; the base station corresponding to the source cell performs communication with the terminal in the source cell according to the first time information; and after completing the access of the terminal to the target cell by completing communication in the target cell, Open the connection to the terminal.
  • the source cell and the target cell are respectively interacted by using a time division multiplexing manner, that is, according to the first in the handover command.
  • the time information is communicated in the source cell, and the second time information in the handover command is used to communicate in the target cell, so that before the terminal successfully switches to the target cell, the connection with the source cell can be maintained, and the target cell also communicates.
  • the terminal switching service is interrupted when the terminal is switched to the normal terminal or the terminal with low connection capability. The low problem further realizes the effect of improving the cell switching efficiency.
  • the method before transmitting, to the terminal, a handover command for instructing the terminal to switch from the source cell to the target cell, the method further includes: configuring, in the handover command, the subframe indicated by the first time information in each radio frame And a subframe indicated by the second time information in each radio frame; generating a handover command according to the subframe indicated by the first time information and the subframe indicated by the second time information.
  • the method before transmitting, to the terminal, a handover command for instructing the terminal to switch from the source cell to the target cell, the method further includes: configuring, in the handover command, the subframe indicated by the first time information in each radio frame Or a subframe indicated by the second time information in each radio frame; generating a handover command according to the subframe indicated by the first time information or the subframe indicated by the second time information.
  • the manner of configuring the subframe in each radio frame may include, but is not limited to, at least one of the following:
  • the manner of configuring the subframe may include, but is not limited to, at least one of the following:
  • each radio frame is repeated, the source cell adopts an even-numbered subframe of each radio frame, the target cell uses an odd-numbered subframe of each radio frame, or vice versa, the source cell uses an odd-numbered subframe of each radio frame, The target cell uses the even numbered subframe of each radio frame.
  • each radio frame is repeated, the source cell adopts the first five subframes of each radio frame, the target cell uses the last five subframes of each radio frame, or vice versa, the source cell uses the last five subframes of each radio frame, The target cell uses the first five subframes of each radio frame.
  • alternate configurations are repeated in a predetermined subframe width in each radio frame, or in every two or every three or four subframes of a radio frame.
  • the predetermined subframe width includes at least one of the following: two subframes and four subframes.
  • the subframes indicated by the first time information and the subframes indicated by the second time information are alternately configured according to the predetermined subframe width, including:
  • every two radio frames are repeated, the first two subframes of the even-numbered frame are used by the source cell, the next two subframes are used by the target cell, and so on; or the first two subframes of the even-numbered frame are used by the target cell, The next two subframes are used by the source cell, and so on; or, the first two subframes of the odd-numbered frame are used by the source cell, the next two subframes are used by the target cell, and so on; or the first two subframes of the odd-numbered frame
  • the frame is used by the target cell, the next two subframes are used by the source cell, and so on.
  • every two radio frames are repeated, the first four subframes of the even-numbered frame are used by the source cell, the next four subframes are used by the target cell, and so on; or the first four subframes of the even-numbered frame are used by the target cell.
  • the next four subframes are used by the source cell, and so on; or, the first four subframes of the odd-numbered frame are used by the source cell, the next four subframes are used by the target cell, and so on; or the first four of the odd-numbered frames
  • the subframes are used by the target cell, the next four subframes are used by the source cell, and so on.
  • the method before transmitting, to the terminal, a handover command for instructing the terminal to switch from the source cell to the target cell, the method further includes: configuring, in the handover command, a predetermined subframe for adjusting the conversion parameter, where the conversion parameter includes At least one of the following: frequency, bandwidth.
  • the handover command indicates that the source cell and the target cell are different frequency cells or cells with different working bandwidths
  • the corresponding adjustments are performed on the conversion parameters during the handover process. For example, switching frequencies, or adjusting bandwidth, etc.
  • the foregoing predetermined subframe may include but is not limited to:
  • the conversion parameter when switching from the source cell to the target cell, the conversion parameter needs to be adjusted, so that the terminal can perform the corresponding service normally; when switching from the target cell to the source cell, Adjust the conversion parameters so that the terminal can perform the corresponding operations normally.
  • the base station of the cell corresponding to the indicated subframe is interacted according to the time division multiplexing mode, corresponding parameter conversion is required.
  • corresponding frequency conversion is required.
  • corresponding bandwidth conversion is required.
  • the method before the handover command is sent to the terminal to indicate that the terminal switches from the source cell to the target cell, the method further includes:
  • the manner of configuring the subframe in each radio frame may include, but is not limited to, at least one of the following:
  • each of the subframes in the radio frame is configured with a corresponding identifier to indicate an available cell.
  • the corresponding command is obtained by acquiring the handover command.
  • the identifier of the second time information and the second time information in the radio frame are respectively obtained.
  • configuring a subframe indicated by the first time information in each radio frame in the handover command, and a subframe indicated by the second time information in each radio frame includes:
  • the radio frame is indicated as a subframe configured for the source cell and the target cell according to the mode shown in FIG. 5; when the predetermined bit indication is 01, the radio frame is indicated to be According to the mode 2 shown in FIG. 5, the subframe configured for the source cell and the target cell; when the predetermined bit indicates 10, the wireless frame is indicated as the source cell and the target cell according to the mode 3 shown in FIG. If the predetermined bit is indicated as 11, the radio frame is indicated as a subframe configured for the source cell and the target cell in the manner shown in FIG.
  • the number of bits of the predetermined bit may be increased.
  • a predetermined bit of 3 bits is used to indicate eight configuration modes. The specific process is as described above, and details are not described herein again.
  • the method before the handover command is sent to the terminal to indicate that the terminal switches from the source cell to the target cell, the method further includes:
  • a predetermined subframe for adjusting a conversion parameter is configured in the handover command, where the conversion parameter includes at least one of the following: frequency, bandwidth.
  • the source cell and the target cell are different frequency cells (the working frequency points are different) or the cells with different working bandwidths (the working frequency points are the same),
  • it is not limited to performing corresponding adjustments on the conversion parameters on a predetermined subframe, for example, converting the operating frequency, or adjusting the operating bandwidth and the like.
  • a cell switching device is further provided, which is used to implement the foregoing embodiments and various extended embodiments thereof, and has not been described again.
  • the term "unit" may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware Implementation is also possible and conceived.
  • FIG. 8 is a structural block diagram 1 of a cell switching apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes:
  • the receiving unit 801 is configured to receive a handover command for instructing the terminal to switch from the source cell to the target cell;
  • the control unit 802 is configured to control the terminal to communicate in the source cell according to the first time information, and the control terminal performs communication in the target cell according to the second time information.
  • the switching unit 803 is configured to determine that the terminal handover succeeds after completing the access of the terminal to the target cell by the communication in the target cell.
  • the device further includes:
  • the obtaining unit 804 is configured to: after receiving the handover command for instructing the terminal to switch from the source cell to the target cell, acquiring, according to the handover command, the subframe indicated by the first time information in each radio frame, And a subframe indicated by the second time information in each radio frame.
  • the cell switching device may be, but is not limited to, a terminal applied to a cell switching system.
  • the specific implementation process of the functions performed by the units in the embodiments of the present invention is similar to the foregoing method embodiment 1, and details are not described herein again.
  • each unit in the cell switching device may be configured by a Central Processing Unit (CPU), a Micro Processor Unit (MPU), and a digital signal processor located at the terminal ( Digital Signal Processor (DSP), or Field Programmable Gate Array (FPGA) implementation.
  • CPU Central Processing Unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • a cell switching device is further provided, which is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "unit" may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also implemented. Possible and conceived.
  • FIG. 9 is a second structural block diagram of a cell switching apparatus according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes:
  • the sending unit 901 is configured to send, to the terminal, a handover command for instructing the terminal to switch from the source cell to the target cell;
  • the communication unit 902 is configured to perform communication with the terminal in the source cell according to the first time information
  • the switching unit 903 is configured to disconnect the terminal after completing the access of the terminal to the target cell by communication in the target cell.
  • the apparatus further includes:
  • the configuration unit 904 is configured to: before the switching command for instructing the terminal to switch from the source cell to the target cell, to configure the first time information in each radio frame in the handover command The indicated subframe, or the subframe indicated by the second time information in each radio frame;
  • the generating unit 905 is configured to generate the switching command according to the subframe indicated by the first time information or the subframe indicated by the second time information.
  • the cell handover apparatus may be, but is not limited to, a base station corresponding to a source cell of the cell handover system.
  • the specific implementation process of the functions performed by the units in the embodiments of the present invention is similar to the foregoing method embodiment 2, and details are not described herein again.
  • each unit in the cell switching apparatus may be implemented by a CPU, an MPU, a DSP, or an FPGA located at a base station.
  • the source cell and the target cell are respectively interacted by using a time division multiplexing manner, that is, according to the first in the handover command.
  • the time information is communicated in the source cell, and the second time information in the handover command is used to communicate in the target cell, so that before the terminal successfully switches to the target cell, the connection with the source cell can be maintained, and the target cell also communicates.
  • a cell handover system including a base station and a terminal corresponding to the source cell, where
  • the base station corresponding to the source cell sends a handover command for instructing the terminal to switch from the source cell to the target cell, where the handover command carries the first time information used to indicate the terminal used by the source cell, and/or And indicating second time information used by the terminal in the target cell;
  • the terminal performs communication in the source cell according to the first time information, and performs communication in the target cell according to the second time information.
  • the system further includes a base station corresponding to the target cell.
  • the cell handover system includes a base station 1001 corresponding to the source cell, a terminal 1002, and a base station 1003 corresponding to the target cell.
  • the terminal 1002 after receiving the handover command from the base station 1001 corresponding to the source cell, the terminal 1002 performs communication in the source cell according to the first time information in the handover command according to the time division multiplexing manner, according to the second time information in the handover command.
  • the target cell performs communication (such as performing a random access procedure to the target cell).
  • the connection between the base station 1001 corresponding to the source cell can be maintained, and the base station 1003 corresponding to the target cell also performs communication to ensure that the terminal service is not interrupted, thereby overcoming
  • the terminal service that is currently executed needs to be interrupted, and the handover efficiency is low due to a long service interruption time, thereby further improving the cell handover efficiency. effect.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be arranged to store program code for performing the following steps:
  • the control terminal performs communication in the source cell according to the first time information, and controls the terminal to perform communication in the target cell according to the second time information.
  • the storage medium is further configured to store program code for performing the following steps:
  • the storage medium is further configured to store program code for performing the following steps:
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • An embodiment of the present invention provides a terminal, where the terminal includes: a memory configured to store a cell handover executable instruction, and a processor configured to perform the cell handover executable instruction, where the receiving is used to instruct the terminal to switch from the source cell to the target a handover command of the cell; controlling, by the terminal, communication in the source cell according to the first time information, controlling the terminal to communicate in the target cell according to the second time information; and completing the communication by using the communication in the target cell After the terminal accesses the target cell, it is determined that the terminal is successfully switched.
  • An embodiment of the present invention provides a base station, where the base station includes: a memory configured to store a cell handover executable instruction, and a processor configured to execute the cell handover executable instruction, and send the terminal to indicate that the terminal is from a source a handover command of the cell to the target cell; communicating with the terminal in the source cell according to the first time information; and completing the access of the terminal to the target cell by communication in the target cell, Open a connection with the terminal.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例提供一种小区切换方法、装置、***及计算机存储介质。所述方法包括：接收用于指示终端从源小区切换至目标小区的切换命令；控制终端根据第一时间信息在源小区进行通信，控制终端根据第二时间信息在目标小区进行通信；当根据在目标小区的通信完成终端对目标小区的接入后，则确定终端切换成功。

Description

小区切换方法、装置、***及计算机存储介质
相关申请的交叉引用
本申请基于申请号为201610311242.1、申请日为2016年05月11日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明实施例涉及通信领域，尤其涉及一种小区切换方法、装置、***及计算机存储介质。
背景技术
在移动通信***中，为了保证业务质量，给用户良好的业务体验，当UE在某个小区与网络建立连接之后，UE仍然需要对服务小区和相邻小区的信号质量进行测量，选择合适的小区进行切换，以便满足移动性要求。
然而，目前在小区切换过程中，需要一定的中断时间来完成从源小区到目标小区的切换，这样不可避免地将需要中断当前执行的终端业务。因而，如何使普通终端或支持连接能力较低的终端能够实现无中断的切换成为迫切需要解决的问题。
发明内容
本发明实施例提供一种小区切换方法、装置、***及计算机存储介质，以至少解决小区切换过程中业务中断时间较长所导致的切换效率较低的问题。
本发明实施例提供一种小区切换方法，包括：接收用于指示终端从源 小区切换至目标小区的切换命令；控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信；通过在所述目标小区的通信完成所述终端对上述目标小区的接入后，确定所述终端切换成功。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例所述的小区切换方法。
本发明实施例还提供一种小区切换方法，包括：向终端发送用于指示所述终端从源小区切换至目标小区的切换命令；根据所述第一时间信息在所述源小区与所述终端进行通信；当通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，断开与所述终端的连接。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例所述的小区切换方法。
本发明实施例又提供一种小区切换装置，包括：接收单元，配置为接收用于指示终端从源小区切换至目标小区的切换命令；控制单元，配置为控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信；切换单元，配置为通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定所述终端切换成功。
本发明实施例还提供一种小区切换装置，包括：发送单元，配置为向终端发送用于指示所述终端从源小区切换至目标小区的切换命令；通信单元，所述根据第一时间信息在所述源小区与所述终端进行通信；切换单元，配置为当通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，断开与所述终端的连接。
本发明实施例还提供一种小区切换***，包括源小区对应的基站和终端，所述源小区对应的基站向所述终端发送用于指示上述终端从源小区切换至目标小区的切换命令；所述终端根据第一时间信息在所述源小区进行通信，根据第二时间信息在所述目标小区进行通信；所述终端根据在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定上述终端切换成功。
本发明实施例所述小区切换方法、装置、***及计算机存储介质，在终端从源小区切换至目标小区的过程中，通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，执行对目标小区的随机接入过程，以保证终端业务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是相关技术中用户设备和基站间协议栈示意图；
图2是相关技术中小区切换方法的流程图；
图3是根据本发明实施例小区切换方法的实现流程示意图一；
图4是根据本发明一应用示例中小区切换方法的交互流程图一；
图5是根据本发明实施例无线帧的组成结构示意图；
图6是根据本发明一应用示例中小区切换方法的流程图二；
图7是根据本发明实施例小区切换方法的实现流程示意图二；
图8是根据本发明实施例小区切换装置的组成结构示意图一；
图9是根据本发明实施例小区切换装置的组成结构示意图二；以及
图10是根据本发明实施例小区切换***的组成结构示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
图1是根据相关技术的用户设备或称为终端(User Equipment，UE)和基站(eNodeB，eNB)间协议栈示意图，如图1所示，长期演进***(Long Term Evolution，LTE)中UE和eNB间接口的协议栈从下往上分为以下几个协议层：物理层(Physical layer，PHY)、媒体接入控制层(Media Access Control，MAC)、无线链路控制层(Radio Link Control，RLC)、分组数据汇聚层(Packet Data Convergence Protocol，PDCP)、无线资源控制层(Radio Resource Control，RRC)。其中，PHY层主要通过传输信道向MAC或更高层传送信息；MAC层主要通过逻辑信道提供数据传输和负责无线资源分配，完成混合自动重传请求(Hybrid ARQ，HARQ)、调度(Scheduling，SCH)、优先级处理和复用解复用(Multiplexing，MUX)等功能；RLC层主要提供用户和控制数据的分段和重传服务；PDCP层主要给RRC或用户面上层完成用户数据的传递；RRC层主要完成广播(Broadcast)、寻呼(Paging)、无线资源控制连接管理、无线承载控制、移动性功能、终端测量报告和控制。在UE给基站发送数据之前，需要获得与基站的上行同步，即，获取发送时间提前量(Time Advance，TA)，UE是通过随机接入过程 来达到这个目的的，这个过程是在MAC层实现的。
在移动通信***中，为了保证业务质量，给用户良好的业务体验，当UE在某个小区与网络建立连接之后，UE仍然需要对服务小区和相邻小区的信号质量进行测量，选择合适的小区进行切换，以便满足移动性要求。图2是根据相关技术的切换的流程图，如图2所示步骤S202-S210，在LTE***中，UE 202接收到网络侧的命令需要进行切换时(图2中A点)，用户面复位(包括MAC层复位和PDCP、RLC层的重建)并按照切换命令的要求更新MAC、PDCP和RLC层的配置，包括配置底层采用目标小区的完整性保护算法(integrity protection algorithm)和加密算法(ciphering algorithm)，在目标小区206进行随机接入，随机接入完成后，UE可以与目标小区206进行通讯(图2中B点)，UE 202给目标小区206发送切换完成命令。UE 202在目标小区206进行随机接入过程时，需要断开与源小区204的数据通讯。A点和B点之间，UE 202与源小区204和目标小区206都不能正常通讯，称为切换的中断时间，这个中断时间是随机接入过程占用的时间，即，是指随机接入开始和完成之间的时间。
也就是说，目前在小区切换过程中，需要一定的中断时间来完成从源小区到目标小区的切换，这样不可避免地将需要中断当前执行的终端业务。
本发明实施例通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，执行对目标小区的随机接入过程，以保证终端业务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
实施例1
在本实施例中提供一种小区切换方法，图3是根据本发明实施例小区切换方法的实现流程示意图一，如图3所示，所述方法包括如下步骤：
S301，接收用于指示终端从源小区切换至目标小区的切换命令；
S302，控制终端根据第一时间信息在源小区进行通信，控制终端根据第二时间信息在目标小区进行通信；
S303，通过在目标小区的通信完成终端对目标小区的接入后，确定终端切换成功。
在一实施例中，所述小区切换方法可以但不限于应用于小区切换***的终端中。比如，所述终端接收用于指示该终端从源小区切换至目标小区的切换命令，其中，上述切换命令中携带有用于指示终端在源小区所使用的第一时间信息，和用于指示终端在目标小区所使用的第二时间信息；该终端根据第一时间信息在源小区进行通信，并根据第二时间信息在目标小区进行通信；通过在目标小区的通信完成终端对目标小区的接入后，确定终端切换成功。再比如，所述终端接收用于指示该终端从源小区切换至目标小区的切换命令，其中，上述切换命令中携带有用于指示终端在源小区所使用的第一时间信息，或用于指示终端在目标小区所使用的第二时间信息；该终端根据第一时间信息在源小区进行通信，并根据第二时间信息在目标小区进行通信；通过在目标小区的通信完成终端对目标小区的接入后，确定终端切换成功。
需要说明的是，在本发明实施例中，在终端从源小区切换至目标小区的过程中，通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，与目标小区也进行通信，以保证终端业 务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
在一实施例中，在切换命令中携带有用于指示终端在源小区所使用的第一时间信息时，可以但不限于根据第一时间信息按照预定算法推算确定出第二时间信息。
在一实施例中，在接收用于指示终端从源小区切换至目标小区的切换命令之后，还包括：根据切换命令获取在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
也就是说，在本发明实施例中，上述切换命令中的第一时间信息可以但不限于用于指示在每个无线帧中终端与源小区对应的基站之间可使用的子帧，上述切换命令中的第二时间信息可以但不限于用于指示在每个无线帧中终端与目标小区对应的基站之间可使用的子帧。
其中，在每个无线帧中配置子帧的方式可以包括但不限于以下至少之一：
1)获取在每个无线帧中的各个子帧上分别配置的与源小区和目标小区对应的标识，该标识用于指示该子帧在源小区可用，还是在目标小区可用；
2)获取切换命令中预定比特位所指示的子帧分配方式，该子帧分配方式用于指示在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
需要说明的是，在本发明实施例中，上述方式2)中，预定比特位所指示的子帧分配方式可以为预先配置的方式，比如比特00标识方式一，01标识方式二，10标识方式三，11标识方式四，依次类推。其中，预先配置的方式可以包括但不限于：预定配置方式、默认配置方式、随机配置方式。
在本发明实施例中，按照上述预定配置方式配置子帧可以包括但不限 于以下至少之一：
1)第一时间信息所指示的子帧包括：每个无线帧中的偶数号子帧，第二时间信息所指示的子帧包括：每个无线帧中奇数号子帧；或者，第一时间信息所指示的子帧包括：每个无线帧中奇数号子帧；第二时间信息所指示的子帧包括：每个无线帧中的偶数号子帧；
例如，每个无线帧重复，源小区采用每个无线帧的偶数号子帧，目标小区使用每个无线帧的奇数号子帧，或者反之，源小区采用每个无线帧的奇数号子帧，目标小区使用每个无线帧的偶数号子帧。
2)第一时间信息所指示的子帧包括：每个无线帧中的前五个子帧，第二时间信息所指示的子帧包括：每个无线帧中的后五个子帧；或者，第一时间信息所指示的子帧包括：每个无线帧中的后五个子帧，第二时间信息所指示的子帧包括：每个无线帧中的前五个子帧。
例如，每个无线帧重复，源小区采用每个无线帧的前面五个子帧，目标小区使用每个无线帧的后面五个子帧，或者反之，源小区采用每个无线帧的后面五个子帧，目标小区使用每个无线帧的前面五个子帧。
3)第一时间信息所指示的子帧与第二时间信息所指示的子帧按照预定子帧宽度交替配置。
例如，在每个无线帧，或者每两个或者每三个或者每四个无线帧的子帧中按照预定子帧宽度重复交替配置。其中，上述预定子帧宽度包括以下至少之一：两个子帧、四个子帧。
在本发明实施例中，在每两个无线帧中交替配置可以包括但不限于以下至少之一：从每两个无线帧的奇数号帧开始，第一时间信息所指示的子帧和第二时间信息所指示的子帧按照预定子帧宽度交替配置，或者，从每两个无线帧的偶数号帧开始，第一时间信息所指示的子帧和第二时间信息所指示的子帧按照预定子帧宽度交替配置。
例如，每两个无线帧重复，偶数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推；或者，偶数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推；或者，奇数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推；或者，奇数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推。
又例如，每两个无线帧重复，偶数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推；或者，偶数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推；或者，奇数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推；或者，奇数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推。
在本发明实施例中，在接收用于指示终端从源小区切换至目标小区的切换命令之后，还包括：在预定子帧调整终端的转换参数。
其中，在本发明实施例中，在预定子帧调整终端的转换参数可以但不限于：根据切换命令判断是否满足切换条件，其中，切换条件包括以下至少之一：源小区与目标小区为同频小区，并且源小区与目标小区的带宽相同；在不满足切换条件时，在预定子帧调整终端的转换参数。
在本发明实施例中，在预定子帧调整终端的转换参数包括：
1)分别在第一时间信息和第二时间信息所指示的子帧中的第一个子帧调整终端的转换参数；或者
2)分别在第一时间信息和第二时间信息所指示的子帧中的最后一个子帧调整终端的转换参数。
需要说明的是，在本发明实施例中，由于不仅从源小区到目标小区切换时，需要调整转换参数，以使终端可以正常执行对应的业务；在从目标 小区到源小区切换时，也需要调整转换参数，以使终端可以正常执行对应的业务。这里，在按照时分复用方式在与所指示的子帧分别对应的小区的基站进行交互时，需要进行对应的参数转换，例如源小区与目标小区为异频小区时，需要进行对应的频率转换；又例如源小区与目标小区的工作带宽不同时，需要进行对应的带宽转换。
具体结合图4所示示例进行说明：
S402，终端402与源小区404对应的基站进行正常的数据通讯；
S404，终端402接收到网络侧(源小区404对应的基站)发送的切换命令(如图4中A点)，终端402通过切换命令获得终端在源小区404可以使用的子帧或时间信息(第一时间信息指示的子帧)，以及在目标小区406可以使用的子帧或时间信息(第二时间信息指示的子帧)，按照切换命令的要求应用目标小区的配置，同时保留源小区的配置；
S406，终端402执行切换过程，如步骤S406-1，终端402在源小区404通过可以使用的子帧或时间进行正常数据收发，如步骤S406-2，终端402在目标小区406通过可以使用的子帧或时间执行随机接入过程；
S408，随机接入完成后，终端402可以与目标小区406进行数据通讯(如图4中B点)；
S410，终端402给目标小区406发送切换完成命令，并自行进行用户面复位(包括MAC层复位和PDCP、RLC层的重建)，断开源小区的连接，应用目标小区的配置，这样目标小区上所有子帧或时间都可以正常使用。
其中，在源小区和目标小区分配的子帧，可以如图5所示包括以下至少一种情况：
方式一：每个无线帧重复，源小区采用每个无线帧的偶数号子帧，目标小区使用每个无线帧的奇数号子帧，或者反之，源小区采用每个无线帧的奇数号子帧，目标小区使用每个无线帧的偶数号子帧，
方式二：每两个无线帧重复，偶数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推，或者反之，偶数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推，或者，奇数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推，或者，奇数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推。
方式三：每两个无线帧重复，偶数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推，或者反之，偶数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推，或者，奇数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推，或者，奇数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推。
方式四：每个无线帧重复，源小区采用每个无线帧的前面五个子帧，目标小区使用每个无线帧的后面五个子帧，或者反之，源小区采用每个无线帧的后面五个子帧，目标小区使用每个无线帧的前面五个子帧，
以上方式，通过一个指示比特即可表达，比如比特00标识方式一，01标识方式二，10标识方式三，11标识方式四，依次类推
方式五：或者每个无线帧重复，或者每两个或三个或四个等待无线帧重复，给每个时间单位比如每个子帧，分配一个指示标识比特，标识为0或1即给源小区使用，标识为1或0即给目标小区使用，这种可以实现随机的的分配。
以上方式，需要每个时间单位一个指示比特。
通过本发明实施例所述小区切换方法，在终端从源小区切换至目标小区的过程中，通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中 第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，与目标小区也进行通信，以保证终端业务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
作为一种可选的方案，在接收用于指示终端从源小区切换至目标小区的切换命令之后，还包括：
S1，根据切换命令获取在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
在本发明实施例中，在每个无线帧中配置子帧的方式可以包括但不限于以下至少之一：
1)获取在每个无线帧中的各个子帧上分别配置的与源小区和目标小区对应的标识，该标识用于指示该子帧在源小区可用，还是在目标小区可用；
例如，如图5所示，无线帧中各个子帧分别被配置对应的标识，以指示可用的小区，例如，源小区配置为标识1，目标小区配置为标识0，则通过获取切换命令中对应的标识，即可得到无线帧中第一时间信息与第二时间信息分别指示的子帧。
2)获取切换命令中预定比特位所指示的子帧分配方式，该子帧分配方式用于指示在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
例如，在预定比特位指示为00时，则指示无线帧是按照如图5所示的方式一为源小区和目标小区配置的子帧；在预定比特位指示为01时，则指示无线帧是按照如图5所示的方式二为源小区和目标小区配置的子帧；在预定比特位指示为10时，则指示无线帧是按照如图5所示的方式三为源小区和目标小区配置的子帧；在预定比特位指示为11时，则指示无线帧是按 照如图5所示的方式四为源小区和目标小区配置的子帧。需要说明的是，随着方式样式的增加，可以增加预定比特位的位数，例如，3位的预定比特位用于指示8种配置方式，具体过程如上述过程，这里不再赘述。
通过本申请提供的实施例，根据切换命令分别获取为源小区和目标小区配置的子帧，从而使终端分别在对应不同的子帧上按照时分复用的方式，实现在业务不中断的情况下，从源小区切换至目标小区，进而保证小区切换的效率。
作为一种可选的方案，第一时间信息所指示的子帧包括：每个无线帧中的偶数号子帧或者每个无线帧中奇数号子帧；第二时间信息所指示的子帧包括：每个无线帧中奇数号子帧或者每个无线帧中的偶数号子帧。
作为一种可选的方案，第一时间信息所指示的子帧包括：每个无线帧中的前五个子帧或者每个无线帧中的后五个子帧；第二时间信息所指示的子帧包括：每个无线帧中的后五个子帧或者每个无线帧中的前五个子帧。
作为一种可选的方案，第一时间信息所指示的子帧与第二时间信息所指示的子帧按照预定子帧宽度交替配置。
例如，在每个无线帧，或者每两个或者每三个或者每四个无线帧的子帧中按照预定子帧宽度重复交替配置。其中，上述预定子帧宽度包括以下至少之一：两个子帧、四个子帧。
在本发明实施例中，从每两个无线帧的奇数号帧开始，第一时间信息所指示的子帧与第二时间信息所指示的子帧按照预定子帧宽度交替配置，或者，从每两个无线帧的偶数号帧开始，第一时间信息所指示的子帧与第二时间信息所指示的子帧按照预定子帧宽度交替配置。
通过本申请提供的实施例，为源小区及目标小区按照不同方式配置对应的子帧，以保证终端从源小区切换至目标小区的过程中，业务不中断，从而达到减少业务中断的时间的目的，进而克服目前小区切换需要业务中 断所导致的效率较低的问题。
作为一种可选的方案，控制终端根据第一时间信息在源小区进行通信，并控制终端根据第二时间信息在目标小区进行通信包括：
S1，控制终端在第一时间信息所指示的子帧上在源小区进行通信；
S2，控制终端在第二时间信息所指示的子帧上执行对目标小区的随机接入过程。
在本发明实施例中，控制终端在第二时间信息所指示的子帧上执行对目标小区的随机接入过程包括：
S22，获取目标小区用于执行随机接入过程的目标子帧；
S24，在第二时间信息所指示的子帧上查找目标子帧；
S26，在第二时间信息所指示的子帧上查找到的目标子帧上向目标小区发送随机接入前导信息，其中，随机接入前导信息中携带有目标小区配置给终端的预定标识。
需要说明的是，目标小区执行随机接入过程的子帧是预定的目标子帧，并不是全部子帧均可执行随机接入过程，因而，在本发明实施例中，终端在第二时间信息所指示的子帧上执行对目标小区的随机接入过程时，可以包括但不限于：在第二时间信息所指示的子帧上查找到用于执行随机接入的目标子帧上向目标小区发送随机接入前导信息，其中，随机接入前导信息中携带有目标小区配置给终端的预定标识。从而实现从已筛选出的候选子帧上，进一步查找得到终端接入目标小区的子帧，以实现在该子帧上完成对目标小区的随机接入过程。
作为一种可选的方案，在接收用于指示终端从源小区切换至目标小区的切换命令之后，还包括：
S1，在预定子帧调整终端的转换参数。
在本发明实施例中，在预定子帧调整终端的转换参数包括：
1)分别在第一时间信息和第二时间信息所指示的子帧中的第一个子帧调整终端的转换参数；或者
2)分别在第一时间信息和第二时间信息所指示的子帧中的最后一个子帧调整终端的转换参数。
需要说明的是，在本发明实施例中，根据切换命令推断源小区与目标小区是异频小区(工作频点不相同)，或是工作带宽不同的小区(工作频点相同)时，则可以但不限于在预定子帧上对转换参数执行对应的调整，例如，转换工作频率，或调整工作带宽等。
作为一种可选的方案，当根据在目标小区的通信完成终端对目标小区的接入后，还包括以下至少之一：
S1，自动删除切换命令中的第一时间信息和/或第二时间信息；
S2，断开终端与源小区的连接。
通过本申请提供的实施例，通过自动删除切换命令中对应的内容，从而避免通过多次信令交互来执行删除操作，进一步保证切换效率。此外，还大大降低切换过程的交互开销。
具体结合图6所示示例来说明上述小区切换方法：
作为一种可选的实施例，假设小区1(源小区)是LTE的小区，中心载频是f1。小区2(目标小区)是LTE的小区，为小区1的相邻小区，中心载频是f2。即，源小区与目标小区是异频小区。
步骤一：当前UE在小区1中处于连接状态。网络侧给UE下发了邻区信号质量优于服务小区的触发事件(A3)的测量任务(Measurement control)，测量对象载频是f2。
步骤二：UE执行测量，发现f2上的小区2满足事件A3的触发条件，上报测量报告(Measurement report)给网络侧。
步骤三：网络侧决定让UE切换(Handover)到小区2中，发送切换准 备命令(Handover request)给小区2。
步骤四：小区2接收到切换准备命令后，分配一个前导码，包含在切换命令(Handover request ack)中发送给小区1，其中，该切换命令中还包含小区2分配的终端在小区2的临时标识(Cell-Radio Network Temp Identity，简称为C-RNTI)、小区2的信息(例如，包含f2和f2的相关信息、小区2的其他信息)，小区1将该切换命令转发给UE(RRC reconfiguration(Handover))。
步骤五：UE接收到切换命令后，获知有源小区即小区1的子帧或时间信息比如是每个无线帧的前面五个子帧，目标小区即小区2的子帧或时间信息比如是每个无线帧的后面五个子帧，即方式四，知道需要执行时分复用的无缝切换，按照规定或默认，终端在分配给某个小区的第一个子帧进行频率转换，即，在每个无线帧的前面五个子帧(分配给源小区的时间信息)的第一个子帧，终端将工作频点转换到源小区(后续四个子帧就可以在源小区工作)，在每个无线帧的后面五个子帧的第一个子帧(分配给目标小区的时间信息)，终端将工作频点转换到目标小区(后续四个子帧就可以在目标小区工作)，然后开始正常的数据调度。
或者，按照规定或默认，终端在分配给某个小区的最后一个子帧进行频率转换，即，在每个无线帧的前面五个子帧的最后一个子帧(分配给源小区的时间信息)，终端将工作频点转换到目标小区(后续子帧是分配给目标小区的因此要转换)，在每个无线帧的后面五个子帧的最后一个子帧(分配给目标小区的时间信息)，终端将工作频点转换到源小区(后续子帧是分配给源小区的因此需要转换)，然后开始正常的数据调度。
上述，或者是终端通过切换命令中的指示获知终端进行频率转换的时间或子帧，或者称为允许业务中断的时间或子帧。
应用小区2相关的配置，包含MAC层中RACH相关的配置，RACH 相关的物理层的配置，在小区2可以使用的子帧内(每个无线帧的后面五个子帧)进行随机接入过程，即终端向小区2发送随机接入前导(Message1)，该Message1包含小区2提供的专用前导码(dedicated preamble)，是小区2配置给终端的专用资源。
此时，终端在小区1上，使用小区1可以使用的子帧(每个无线帧的前面五个子帧)进行正常的数据通信。
步骤六：小区2接收到Message1后，给UE预留资源，给UE回应Message2，包含TA和/或UE在上行链路上传输的授权信息(UL grant)。
步骤七：在UE接收到Message2后，在小区2执行的无冲突的随机接入过程结束，UE获得与小区2的下行同步和TA，认为切换成功，终端自行完成用户面协议的复位过程，复位包括MAC层复位、PDCP和RLC层的重建，并自动删除切换命令中配置的源小区和目标小区的子帧或时间信息，即此时开始与小区2进行通讯，目标小区(即小区2)所有的子帧都可以正常使用，发送用于指示切换完成的Message3(HO complete)给小区2，小区2通知核心网进行路径交换(Path Switch)，同时指示小区1，UE已经接入小区2，此时终端断开与小区1的通讯。小区1在接收到该指示后，将获知按照时分复用方式所配置的子帧的信息已失效。
以上，因为目标小区是为了进行随机接入过程，因此，时间分配上可以依照目标小区随机接入的配置来进行。
作为另一种可选的实施例，假设小区1(源小区)是LTE的小区，中心载频是f1。小区2(目标小区)是LTE的小区，为小区1的相邻小区，中心载频是f1。即，源小区与目标小区是同频小区。
步骤一：当前UE在小区1中处于连接状态。网络侧给UE下发了邻区信号质量优于服务小区的触发事件(A3)的测量任务(Measurement control)，测量对象载频是f1。
步骤二：UE执行测量，发现f1上的小区2满足事件A3的触发条件，上报测量报告(Measurement report)给网络侧。
步骤三：网络侧决定让UE切换(Handover)到小区2中，发送切换准备命令(Handover request)给小区2。
步骤四：小区2接收到切换准备命令后，分配一个前导码，包含在切换命令(Handover request ack)中发送给小区1，其中，该切换命令中还包含小区2分配的终端在小区2的临时标识(Cell-Radio Network Temp Identity，简称为C-RNTI)、小区2的信息(例如，包含f2和f2的相关信息、小区2的其他信息)，小区1将该切换命令转发给UE(RRC reconfiguration(Handover))。
步骤五：UE接收到切换命令后，获知有源小区即小区1的子帧或时间信息比如是每个无线帧的偶数号子帧，目标小区即小区2的子帧或时间信息比如是每个无线帧的奇数号子帧，即方式一，知道需要执行时分复用的无缝切换，
应用小区2相关的配置，包含MAC层中RACH相关的配置，RACH相关的物理层的配置，在小区2可以使用的子帧内(每个无线帧的奇数号子帧)进行随机接入过程，即终端向小区2发送随机接入前导(Message1)，该Message1包含小区2提供的专用前导码(dedicated preamble)，是小区2配置给终端的专用资源。
此时，终端在小区1上，使用小区1可以使用的子帧(每个无线帧的偶数号子帧)进行正常的数据通信。
步骤六：小区2接收到Message1后，给UE预留资源，给UE回应Message2，包含TA和/或UE在上行链路上传输的授权信息(UL grant)。
步骤七：在UE接收到Message2后，在小区2执行的无冲突的随机接入过程结束，UE获得与小区2的下行同步和TA，认为切换成功，终端自 行完成用户面协议的复位过程，复位包括MAC层复位、PDCP和RLC层的重建，开始与小区2进行通讯，小区2所有的子帧都可以正常使用，发送用于指示切换完成的Message3(HO complete)给小区2，小区2通知核心网进行路径交换(Path Switch)，同时指示小区1，UE已经接入小区2，此时终端断开与小区1的通讯。小区1在接收到该指示后，将获知按照时分复用方式所配置的子帧的信息已失效。
上述步骤五，还可以但不限于：UE接收到切换命令后，获知有源小区即小区1的子帧或时间信息和目标小区即小区2的子帧或时间信息，比如每个偶数号无线帧的前面两个子帧配置给小区1，接下来两个子帧配置给小区2，以此类推，即方式二，知道需要执行时分复用的无缝切换。
还可以但不限于：UE接收到切换命令后，获知有源小区即小区1的子帧或时间信息和目标小区即小区2的子帧或时间信息，比如，每个偶数号帧的前面四个子帧配置给小区1，接下来四个子帧配置给小区2，依次类推，即方式三。
还可以但不限于，UE接收到切换命令后，获知有源小区即小区1的子帧或时间信息和目标小区即小区2的子帧或时间信息，比如，每个无线帧，设置为0的比特指示配置给小区1使用，设置为1的比特指示配置给小区2使用，该配置为00011111100，即每个无线帧，0、1、2号子帧配置给小区1；3、4、5、6、7号子帧配置给小区2；8、9号子帧配置给小区1。
在本示例中，由于源小区和目标小区是同频的，因此终端无需进行频率转换，因此也不需要进行频率转换的时间或子帧的指定。如果终端需要做其他的准备工作比如调整工作带宽等，执行的时间或子帧的指定方式，可以参照上述示例。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当 然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
实施例2
在本实施例中提供一种小区切换方法，图7是本发明实施例小区切换方法的实现流程示意图二，如图7所示，该流程包括如下步骤：
S701，向终端发送用于指示终端从源小区切换至目标小区的切换命令；
S702，根据第一时间信息在源小区与终端进行通信；
S703，当根据在目标小区的通信完成终端对目标小区的接入后，则断开与终端的连接。
在本发明实施例中，上述小区切换方法可以但不限于应用于小区切换***的源小区对应的基站中。比如，源小区对应的基站向终端发送用于指示该终端从源小区切换至目标小区的切换命令，其中，上述切换命令中携带有用于指示终端在源小区所使用的第一时间信息，和用于指示终端在目标小区所使用的第二时间信息；源小区对应的基站根据第一时间信息在源小区与终端进行通信；通过在目标小区的通信完成终端对目标小区的接入后，断开与终端的连接。再比如，源小区对应的基站向终端发送用于指示该终端从源小区切换至目标小区的切换命令，其中，上述切换命令中携带有用于指示终端在源小区所使用的第一时间信息，或用于指示终端在目标小区所使用的第二时间信息；源小区对应的基站根据第一时间信息在源小区与终端进行通信；通过在目标小区的通信完成终端对目标小区的接入后，断开与终端的连接。
需要说明的是，在本发明实施例中，在终端从源小区切换至目标小区的过程中，通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，与目标小区也进行通信，以保证终端业务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
在本发明实施例中，在向终端发送用于指示终端从源小区切换至目标小区的切换命令之前，还包括：在切换命令中配置在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧；根据第一时间信息所指示的子帧，和第二时间信息所指示的子帧生成切换命令。
在本发明实施例中，在向终端发送用于指示终端从源小区切换至目标小区的切换命令之前，还包括：在切换命令中配置在每个无线帧中第一时间信息所指示的子帧，或在每个无线帧中第二时间信息所指示的子帧；根据第一时间信息所指示的子帧，或第二时间信息所指示的子帧生成切换命令。
其中，在每个无线帧中配置子帧的方式可以包括但不限于以下至少之一：
1)在每个无线帧中的各个子帧上分别配置与源小区和目标小区对应的标识，该标识用于指示该子帧在源小区可用，还是在目标小区可用；
2)在预定比特位配置子帧分配方式，该子帧分配方式用于指示在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
在本发明实施例中，配置子帧的方式可以包括但不限于以下至少之一：
1)将每个无线帧中的偶数号子帧配置为第一时间信息所指示的子帧，每个无线帧中奇数号子帧配置为第二时间信息所指示的子帧；或者，将每个无线帧中奇数号子帧配置为第一时间信息所指示的子帧，每个无线帧中奇数号子帧配置为第二时间信息所指示的子帧。
例如，每个无线帧重复，源小区采用每个无线帧的偶数号子帧，目标小区使用每个无线帧的奇数号子帧，或者反之，源小区采用每个无线帧的奇数号子帧，目标小区使用每个无线帧的偶数号子帧。
2)将每个无线帧中的偶数号子帧配置为第一时间信息所指示的子帧，每个无线帧中奇数号子帧配置为第二时间信息所指示的子帧；或者，将每个无线帧中奇数号子帧配置为第一时间信息所指示的子帧，每个无线帧中奇数号子帧配置为第二时间信息所指示的子帧。
例如，每个无线帧重复，源小区采用每个无线帧的前面五个子帧，目标小区使用每个无线帧的后面五个子帧，或者反之，源小区采用每个无线帧的后面五个子帧，目标小区使用每个无线帧的前面五个子帧。
3)按照预定子帧宽度交替配置第一时间信息所指示的子帧和/或第二时间信息所指示的子帧。
例如，在每个无线帧，或者每两个或者每三个或者每四个无线帧的子帧中按照预定子帧宽度重复交替配置。其中，上述预定子帧宽度包括以下至少之一：两个子帧、四个子帧。
在本发明实施例中，按照预定子帧宽度交替配置第一时间信息所指示的子帧与第二时间信息所指示的子帧包括：
(1)从每两个无线帧的奇数号帧开始，按照预定子帧宽度交替配置第一时间信息所指示的子帧和第二时间信息所指示的子帧；或者
(2)从每两个无线帧的偶数号帧开始，按照预定子帧宽度交替配置第 一时间信息所指示的子帧和第二时间信息所指示的子帧。
例如，每两个无线帧重复，偶数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推；或者，偶数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推；或者，奇数号帧的前面两个子帧给源小区使用，接下来两个子帧给目标小区使用，依次类推；或者，奇数号帧的前面两个子帧给目标小区使用，接下来两个子帧给源小区使用，依次类推。
又例如，每两个无线帧重复，偶数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推；或者，偶数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推；或者，奇数号帧的前面四个子帧给源小区使用，接下来四个子帧给目标小区使用，依次类推；或者，奇数号帧的前面四个子帧给目标小区使用，接下来四个子帧给源小区使用，依次类推。
在本发明实施例中，在向终端发送用于指示终端从源小区切换至目标小区的切换命令之前，还包括：在切换命令中配置用于调整转换参数的预定子帧，其中，转换参数包括以下至少之一：频率、带宽。
需要说明的是，在本发明实施例中，在切换命令指示源小区与目标小区是异频小区，或是工作带宽不同的小区时，则需对在切换过程中对转换参数执行对应的调整，例如，转换频率，或调整带宽等。
在本发明实施例中，上述预定子帧可以包括但不限于：
1)在第一时间信息和第二时间信息所指示的子帧中的第一个子帧；
2)在第一时间信息和第二时间信息所指示的子帧中的最后一个子帧。
需要说明的是，在本发明实施例中，由于不仅从源小区到目标小区切换时，需要调整转换参数，以使终端可以正常执行对应的业务；在从目标小区到源小区切换时，也需要调整转换参数，以使终端可以正常执行对应 的业务。这里，在按照时分复用方式在与所指示的子帧分别对应的小区的基站进行交互时，需要进行对应的参数转换，例如源小区与目标小区为异频小区时，需要进行对应的频率转换；又例如源小区与目标小区的工作带宽不同时，需要进行对应的带宽转换。
本发明实施例所述小区切换方法的实现流程可以具体结合前述图4所示的示例进行说明，这里不再赘述。
作为一种可选的方案，在向终端发送用于指示终端从源小区切换至目标小区的切换命令之前，还包括：
S1，在切换命令中配置在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧；
S2，根据第一时间信息所指示的子帧，和第二时间信息所指示的子帧生成切换命令。
在本发明实施例中，在每个无线帧中配置子帧的方式可以包括但不限于以下至少之一：
1)在每个无线帧中的各个子帧上分别配置与源小区和目标小区对应的标识，该标识用于指示该子帧在源小区可用，还是在目标小区可用；
例如，如图5所示，无线帧中各个子帧分别被配置对应的标识，以指示可用的小区，例如，源小区配置为标识1，目标小区配置为标识0，则通过获取切换命令中对应的标识，即可得到无线帧中第一时间信息与第二时间信息分别指示的子帧。
2)在预定比特位配置子帧分配方式，该子帧分配方式用于指示在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
作为一种可选的方案，在切换命令中配置在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧包括：
S1，在预定比特位配置子帧分配方式，其中，子帧分配方式用于指示在每个无线帧中第一时间信息所指示的子帧和第二时间信息所指示的子帧的配置。
例如，在预定比特位指示为00时，则指示无线帧是按照如图5所示的方式一为源小区和目标小区配置的子帧；在预定比特位指示为01时，则指示无线帧是按照如图5所示的方式二为源小区和目标小区配置的子帧；在预定比特位指示为10时，则指示无线帧是按照如图5所示的方式三为源小区和目标小区配置的子帧；在预定比特位指示为11时，则指示无线帧是按照如图5所示的方式四为源小区和目标小区配置的子帧。
需要说明的是，随着方式样式的增加，可以增加预定比特位的位数，例如，3位的预定比特位用于指示8种配置方式，具体过程如上述过程，这里不再赘述。
作为一种可选的方案，在向终端发送用于指示终端从源小区切换至目标小区的切换命令之前，还包括：
S1，在切换命令中配置用于调整转换参数的预定子帧，其中，转换参数包括以下至少之一：频率、带宽。
需要说明的是，在本发明实施例中，根据切换命令推断源小区与目标小区是异频小区(工作频点不相同)，或是工作带宽不同的小区(工作频点相同)时，则可以但不限于在预定子帧上对转换参数执行对应的调整，例如，转换工作频率，或调整工作带宽等。
实施例3
在本实施例中还提供一种小区切换装置，该装置用于实现上述实施例及其扩展的各种实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“单元”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的 实现也是可能并被构想的。
图8是根据本发明实施例的小区切换装置的结构框图一，如图8所示，该装置包括：
1)接收单元801，配置为接收用于指示终端从源小区切换至目标小区的切换命令；
2)控制单元802，配置为控制终端根据第一时间信息在源小区进行通信，控制终端根据第二时间信息在目标小区进行通信；
3)切换单元803，配置为通过在目标小区的通信完成终端对目标小区的接入后，确定终端切换成功。
在一实施例中，如图8所示，所述装置还包括：
获取单元804，配置为在所述接收用于指示终端从源小区切换至目标小区的切换命令之后，根据所述切换命令获取在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧。
在本发明实施例中，所述小区切换装置可以但不限于应用于小区切换***中的终端。本发明实施例所述各单元所执行的功能的具体实现过程与前述方法实施例1类似，这里不再赘述。
在实际应用中，本发明实施例所述小区切换装置中的各单元均可由位于终端的中央处理器(Central Processing Unit，CPU)、微处理器(Micro Processor Unit，MPU)、数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array，FPGA)等实现。
实施例4
在本实施例中还提供一种小区切换装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“单元”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是 可能并被构想的。
图9是根据本发明实施例的小区切换装置的结构框图二，如图9所示，该装置包括：
1)发送单元901，配置为向终端发送用于指示终端从源小区切换至目标小区的切换命令；
2)通信单元902，配置为根据第一时间信息在源小区与终端进行通信；
3)切换单元903，配置为当通过在目标小区的通信完成终端对目标小区的接入后，断开与终端的连接。
在一实施例中，如图9所示，所述装置还包括：
配置单元904，配置为在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，在所述切换命令中配置在每个无线帧中所述第一时间信息所指示的子帧，或在每个无线帧中所述第二时间信息所指示的子帧；
生成单元905，配置为根据所述第一时间信息所指示的子帧，或所述第二时间信息所指示的子帧生成所述切换命令。
在本发明实施例中，上述小区切换装置可以但不限于应用于小区切换***的源小区对应的基站中。本发明实施例所述各单元所执行的功能的具体实现过程与前述方法实施例2类似，这里不再赘述。
在实际应用中，本发明实施例所述小区切换装置中的各单元均可由位于基站的CPU、MPU、DSP、或FPGA等实现。
需要说明的是，在本发明实施例中，在终端从源小区切换至目标小区的过程中，通过采用时分复用的方式，分别与源小区及目标小区进行交互，即根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信，从而实现在终端成功切换至目标小区之前，可以保持与源小区的连接的同时，与目标小区也进行通信，以保证终端业 务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
实施例5
在本实施例中还提供一种小区切换***，包括源小区对应的基站及终端，其中，
S1，源小区对应的基站向终端发送用于指示终端从源小区切换至目标小区的切换命令，其中，切换命令中携带有用于指示终端在源小区所使用的第一时间信息，和/或用于指示终端在目标小区所使用的第二时间信息；
S2，终端根据第一时间信息在源小区进行通信，根据第二时间信息在目标小区进行通信；
S3，当终端根据在目标小区的通信完成终端对目标小区的接入后，则确定终端切换成功。
在本发明实施例中，上述***还包括目标小区对应的基站，例如，如图10所示，小区切换***包括源小区对应的基站1001，终端1002，及目标小区对应的基站1003。
具体而言，终端1002在从源小区对应的基站1001接收到切换命令后，按照时分复用的方式，根据切换命令中第一时间信息在源小区进行通信，根据切换命令中第二时间信息在目标小区进行通信(如执行对目标小区的随机接入过程)。从而实现在终端1002成功切换至目标小区之前，可以保持与源小区对应的基站1001之间的连接的同时，与目标小区对应的基站1003也进行通信，以保证终端业务不会被中断，进而克服现有技术中对普通终端或支持连接能力较低的终端进行小区切换时，需要中断当前执行的终端业务，业务中断时间较长所导致的切换效率较低的问题，进一步实现提高小区切换效率的效果。
本实施例中的具体示例可以参考上述实施例1及实施例2中可选实施方式中所描述的示例，本实施例在此不再赘述。
实施例6
本发明的实施例还提供一种存储介质。上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，接收用于指示终端从源小区切换至目标小区的切换命令；
S2，控制终端根据第一时间信息在源小区进行通信，并控制终端根据第二时间信息在目标小区进行通信；
S3，当根据在目标小区的通信完成终端对目标小区的接入后，则确定终端切换成功。
在一实施例中，存储介质还被设置为存储用于执行以下步骤的程序代码：
S1，在接收用于指示终端从源小区切换至目标小区的切换命令之后，根据切换命令获取在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
在一实施例中，存储介质还被设置为存储用于执行以下步骤的程序代码：
S1，获取切换命令中预定比特位所指示的子帧分配方式；
S2，按照所指示的子帧分配方式获取在每个无线帧中第一时间信息所指示的子帧，和在每个无线帧中第二时间信息所指示的子帧。
在一实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的具体示例可以参考上述实施例1及实施例2中可选实施方式中所描述的示例，本实施例在此不再赘述。
实施例7
本发明实施例提供一种终端，所述终端包括：存储器，配置为存储小区切换可执行指令；处理器，配置为执行所述小区切换可执行指令，接收用于指示终端从源小区切换至目标小区的切换命令；控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信；通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定所述终端切换成功。
本实施例中的具体示例可以参考上述实施例1中可选实施方式中所描述的示例，本实施例在此不再赘述。
实施例8
本发明实施例提供一种基站，所述基站包括：存储器，配置为存储小区切换可执行指令；处理器，配置为执行所述小区切换可执行指令，向终端发送用于指示所述终端从源小区切换至目标小区的切换命令；根据第一时间信息在所述源小区与所述终端进行通信；当通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，断开与所述终端的连接。
本实施例中的具体示例可以参考上述实施例2中可选实施方式中所描述的示例，本实施例在此不再赘述。
本领域内的技术人员应明白，本发明的实施例可提供为方法、***、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和 /或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (27)

  1. 一种小区切换方法，所述方法包括：
    接收用于指示终端从源小区切换至目标小区的切换命令；
    控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信；
    通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定所述终端切换成功。
  2. 根据权利要求1所述的方法，其中，在所述接收用于指示终端从源小区切换至目标小区的切换命令之后，所述方法还包括：
    根据所述切换命令获取在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧。
  3. 根据权利要求2所述的方法，其中，所述根据所述切换命令获取在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧包括：
    获取所述切换命令中预定比特位所指示的子帧分配方式；
    按照所指示的所述子帧分配方式获取在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧。
  4. 根据权利要求2或3所述的方法，其中，所述第一时间信息所指示的子帧和所述第二时间信息所指示的子帧包括如下组合至少之一：
    所述第一时间信息所指示的子帧包括所述每个无线帧中的偶数号子帧或者所述每个无线帧中奇数号子帧；所述第二时间信息所指示的子帧包括所述每个无线帧中奇数号子帧或者所述每个无线帧中的偶数号子帧；
    或，所述第一时间信息所指示的子帧包括所述每个无线帧中的前五个子帧或者所述每个无线帧中的后五个子帧；所述第二时间信息所指示的子帧包括所述每个无线帧中的后五个子帧或者所述每个无线帧中的前五个子 帧。
  5. 根据权利要求2或3所述的方法，其中，所述第一时间信息所指示的子帧与所述第二时间信息所指示的子帧按照预定子帧宽度交替配置。
  6. 根据权利要求5所述的方法，其中，所述第一时间信息所指示的子帧与所述第二时间信息所指示的子帧按照预定子帧宽度交替配置，包括：
    从每两个无线帧的奇数号帧开始，所述第一时间信息所指示的子帧与所述第二时间信息所指示的子帧按照预定子帧宽度交替配置，或者，从每两个无线帧的偶数号帧开始，所述第一时间信息所指示的子帧与所述第二时间信息所指示的子帧按照所述预定子帧宽度交替配置。
  7. 根据权利要求1所述的方法，其中，所述切换命令中携带有用于指示所述终端在所述源小区所使用的第一时间信息；
    所述方法还包括：根据所述第一时间信息确定出所述第二时间信息。
  8. 根据权利要求2或3所述的方法，其中，所述控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信包括：
    控制所述终端在所述第一时间信息所指示的子帧上在所述源小区进行通信；
    控制所述终端在所述第二时间信息所指示的子帧上执行对所述目标小区的随机接入过程。
  9. 根据权利要求8所述的方法，其中，所述控制所述终端在所述第二时间信息所指示的子帧上执行对所述目标小区的随机接入过程包括：
    获取所述目标小区用于执行所述随机接入过程的目标子帧；
    在所述第二时间信息所指示的子帧上查找所述目标子帧；
    在所述第二时间信息所指示的子帧上查找到的所述目标子帧上向所述目标小区发送随机接入前导信息，其中，所述随机接入前导信息中携带有 所述目标小区配置给所述终端的预定标识。
  10. 根据权利要求2所述的方法，其中，在所述接收用于指示终端从源小区切换至目标小区的切换命令之后，所述方法还包括：
    在预定子帧调整所述终端的转换参数。
  11. 根据权利要求10所述的方法，其中，所述在预定子帧调整所述终端的转换参数包括：
    分别在所述第一时间信息和所述第二时间信息所指示的子帧中的第一个子帧调整所述终端的转换参数；或者
    分别在所述第一时间信息和所述第二时间信息所指示的子帧中的最后一个子帧调整所述终端的转换参数。
  12. 根据权利要求2所述的方法，其中，根据在所述目标小区的通信完成所述终端对所述目标小区的接入后，所述方法还包括以下至少之一：
    自动删除所述切换命令中的所述第一时间信息和/或所述第二时间信息；
    断开所述终端与所述源小区的连接。
  13. 一种小区切换方法，所述方法包括：
    向终端发送用于指示所述终端从源小区切换至目标小区的切换命令；
    根据第一时间信息在所述源小区与所述终端进行通信；
    当通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，断开与所述终端的连接。
  14. 根据权利要求13所述的方法，其中，在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，所述方法还包括：
    在所述切换命令中配置在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧；
    根据所述第一时间信息所指示的子帧，和所述第二时间信息所指示的 子帧生成所述切换命令。
  15. 根据权利要求13所述的方法，其中，在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，所述方法还包括：
    在所述切换命令中配置在每个无线帧中所述第一时间信息所指示的子帧，或在每个无线帧中所述第二时间信息所指示的子帧；
    根据所述第一时间信息所指示的子帧，或所述第二时间信息所指示的子帧生成所述切换命令。
  16. 根据权利要求14所述的方法，其中，所述在所述切换命令中配置在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧包括如下组合至少之一：
    将所述每个无线帧中的偶数号子帧配置为所述第一时间信息所指示的子帧，所述每个无线帧中奇数号子帧配置为所述第二时间信息所指示的子帧；
    或者，将所述每个无线帧中奇数号子帧配置为所述第一时间信息所指示的子帧，所述每个无线帧中奇数号子帧配置为所述第二时间信息所指示的子帧；
    或者，将所述每个无线帧中的前五个子帧配置为所述第一时间信息所指示的子帧，所述每个无线帧中的后五个子帧配置为所述第二时间信息所指示的子帧；
    或者，将所述每个无线帧中的后五个子帧配置为所述第一时间信息所指示的子帧，所述每个无线帧中的前五个子帧配置为所述第二时间信息所指示的子帧。
  17. 根据权利要求13所述的方法，其中，在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，所述方法还包括：
    按照预定子帧宽度交替配置所述第一时间信息所指示的子帧和所述第 二时间信息所指示的子帧。
  18. 根据权利要求17所述的方法，其中，所述按照预定子帧宽度交替配置所述第一时间信息所指示的子帧和所述第二时间信息所指示的子帧包括：
    从每两个无线帧的奇数号帧开始，按照所述预定子帧宽度交替配置所述第一时间信息所指示的子帧和所述第二时间信息所指示的子帧；或者
    从每两个无线帧的偶数号帧开始，按照所述预定子帧宽度交替配置所述第一时间信息所指示的子帧和所述第二时间信息所指示的子帧。
  19. 根据权利要求14或15所述的方法，其中，所述方法还包括：
    在预定比特位配置子帧分配方式，其中，所述子帧分配方式用于指示在每个无线帧中所述第一时间信息所指示的子帧和所述第二时间信息所指示的子帧的配置。
  20. 根据权利要求13所述的方法，其中，在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，还包括：
    在所述切换命令中配置用于调整转换参数的预定子帧，其中，所述转换参数包括以下至少之一：频率、带宽。
  21. 一种小区切换装置，所述装置包括：
    接收单元，配置为接收用于指示终端从源小区切换至目标小区的切换命令；
    控制单元，配置为控制所述终端根据第一时间信息在所述源小区进行通信，控制所述终端根据第二时间信息在所述目标小区进行通信；
    切换单元，配置为通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定所述终端切换成功。
  22. 根据权利要求21所述的装置，其中，所述装置还包括：
    获取单元，配置为在所述接收用于指示终端从源小区切换至目标小区 的切换命令之后，根据所述切换命令获取在每个无线帧中所述第一时间信息所指示的子帧，和在每个无线帧中所述第二时间信息所指示的子帧。
  23. 一种小区切换装置，所述装置包括：
    发送单元，配置为向终端发送用于指示所述终端从源小区切换至目标小区的切换命令；
    通信单元，配置为根据第一时间信息在所述源小区与所述终端进行通信；
    切换单元，配置为当通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，断开与所述终端的连接。
  24. 根据权利要求23所述的装置，其中，所述装置还包括：
    配置单元，配置为在所述向终端发送用于指示所述终端从源小区切换至目标小区的切换命令之前，在所述切换命令中配置在每个无线帧中所述第一时间信息所指示的子帧，或在每个无线帧中所述第二时间信息所指示的子帧；
    生成单元，配置为根据所述第一时间信息所指示的子帧，或所述第二时间信息所指示的子帧生成所述切换命令。
  25. 一种小区切换***，所述***包括：源小区对应的基站和终端；
    所述源小区对应的基站向所述终端发送用于指示所述终端从源小区切换至目标小区的切换命令；
    所述终端根据第一时间信息在所述源小区进行通信，根据第二时间信息在所述目标小区进行通信；
    所述终端通过在所述目标小区的通信完成所述终端对所述目标小区的接入后，确定所述终端切换成功。
  26. 一种计算机存储介质，所述计算机存储介质中存储有可执行指令，所述可执行指令用于执行权利要求1至12任一项所述的小区切换方法。
  27. 一种计算机存储介质，所述计算机存储介质中存储有可执行指令，所述可执行指令用于执行权利要求13至20任一项所述的小区切换方法。
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