CN108337700B - Method for automatically switching terminal, base station and terminal - Google Patents

Method for automatically switching terminal, base station and terminal Download PDF

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Publication number
CN108337700B
CN108337700B CN201710042898.2A CN201710042898A CN108337700B CN 108337700 B CN108337700 B CN 108337700B CN 201710042898 A CN201710042898 A CN 201710042898A CN 108337700 B CN108337700 B CN 108337700B
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automatic
terminal
base station
automatic switching
measurement report
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CN108337700A (en
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孙立新
丁颖哲
周明宇
路杨
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Baicells Technologies Co Ltd
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Beijing Bai Caibang Technology Co ltd
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Priority to PCT/CN2018/073364 priority patent/WO2018133831A1/en
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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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

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

Abstract

The invention provides a method for automatically switching a terminal, a base station and a terminal, relates to the field of communication and solves the problem that in the prior art, in the automatic switching of the terminal, the time when a source base station initiates switching preparation is not specified, so that invalid switching preparation is caused and the X2 signaling overhead is increased. The method is applied to a base station and comprises the following steps: sending a measurement configuration message for automatic switching preparation to a terminal, and detecting an obtained measurement report for automatic switching preparation sent by the terminal; when the terminal is determined to support the automatic switching function according to the received measurement report aiming at the automatic switching preparation, sending an automatic switching request to a target base station needing the automatic switching preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover. The scheme of the invention effectively determines the time for initiating the switching preparation, and avoids the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station.

Description

Method for automatically switching terminal, base station and terminal
Technical Field
The present invention relates to the field of communications, and in particular, to a method, a base station, and a terminal for automatically switching a terminal.
Background
Mf (multe fire) is a radio access technology that extends LTE (Long Term Evolution) to an unlicensed frequency band, in which an unlicensed frequency band carrier may independently provide services without the help of a licensed frequency band carrier. In order to fairly occupy the unlicensed band channel and avoid mutual interference between unlicensed band devices and other devices in the unlicensed band (e.g., WiFi devices), the MF physical layer introduces a Listen-Before-Talk (LBT) mechanism similar to the WiFi carrier sensing technique. And stopping transmitting the signal when the base station or the terminal monitors that the unlicensed frequency band channel is occupied, namely LBT fails, and transmitting the signal when the base station or the terminal monitors that the channel is idle, namely LBT succeeds.
In order to improve transmission efficiency of a downlink common control Signal of a base station under an LBT mechanism, a Discovery Reference Signal (DRS) is introduced into an MF, and the DRS includes a main downlink common control Signal, including a System broadcast, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), an enhanced Primary synchronization Signal (ePSS), an enhanced Secondary synchronization Signal (eSSS), a Cell Reference Signal (CRS), a main System Information Block (MIB, Master Information Block), and an enhanced System Information Block (SIB-MF). The UE may receive the DRS for downlink synchronization, receive the MIB and the SIB-MF within a Discovery signal Measurement Configuration (DMTC) window. The MF cell only transmits the CRS in a DRS subframe or other subframes transmitted by a Physical Downlink Shared Channel (PDSCH), so that the UE can perform Channel measurement on the MF serving cell or the MF neighbor cell only within the DMTC window for cell selection, cell reselection, or handover. The base station can respectively send DMTC information of the serving cell, the co-frequency adjacent cell and the inter-frequency adjacent cell to the UE, so that the UE can acquire DRS sending time windows of the MF serving cell, the co-frequency adjacent cell and the inter-frequency adjacent cell according to the DMTC information to perform channel measurement.
The MF provides Network architectures of two basic access modes, which are a Public Land Mobile Network (PLMN) access mode and a Neutral Host Network (NHN) access mode. The method comprises the steps that an NH Access mode is a neutral Network which is uniformly planned and self-organized and newly introduced by MF, one NHN can be shared to a plurality of Service providers at the same time, MF RAN (Radio Access Network ) is connected to a Core Network (CN, Core Network) of the NHN, and NH Network ID (NHN-ID) and Service Provider identification (PSP-ID) are sent in a broadcast message of an MF cell. The PLMN access mode is a network mode in which the MF RAN is connected to a 3GPP CN of a mobile operator, the UE can perform S1 or X2 handover between the MF RAN in the PLMN access mode and the 3GPP RAN, and a PLMN ID list is sent in a broadcast message of an MF cell. In addition, there is a hybrid access mode where the MF RAN is connected to both the NHN CN and the 3GPP CN, and the NHN-ID, the PSP-ID and the PLMN ID list are broadcast simultaneously in a broadcast message of the MF cell.
When the measurement result of the terminal located in the MF cell meets the handover condition, if the channel occupation is monitored according to the LBT mechanism, the measurement report cannot be sent, and similarly, after the MF cell receives the measurement report of the terminal, if the channel occupation is monitored according to the LBT mechanism, the handover command cannot be sent, which results in too large handover delay. Therefore, an autonomous terminal handover is supported in the MF system, when the terminal detects that the channel qualities of the current access cell and the neighboring cell meet the handover condition, the terminal can automatically initiate random access to the target cell to access the target cell without waiting for receiving the handover command of the current access cell, that is, when the terminal detects that the channel qualities of the current access cell and the neighboring cell meet the handover condition, the terminal does not send a measurement report to the current cell and waits for the handover command of the current cell to reduce the handover delay.
According to the existing scheme, a source base station may transmit a handover preparation request to an automatic handover candidate target base station of a terminal, but the handover preparation for automatic handover is different from that in conventional handover in which the source base station selects a target base station according to a measurement result of the terminal and transmits a handover preparation request to the target base station when the terminal satisfies a handover condition. However, in the automatic handover, the prior art does not specify the time when the source base station initiates the handover preparation to the target base station, and does not have the appropriate handover preparation time, which results in invalid handover preparation and increases X2 signaling overhead. Therefore, how to determine the time when the source base station initiates handover preparation to the target base station and how to select a suitable target base station are problems to be solved.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method, a base station and a terminal for automatic terminal handover, which solve the problem that in the prior art, in automatic terminal handover, the time when a source base station initiates handover preparation to a target base station is not specified, so that invalid handover preparation is caused and the signaling overhead of X2 is increased.
In order to solve the above technical problem, an embodiment of the present invention provides a method for automatically switching a terminal, which is applied to a base station, and includes:
sending a measurement configuration message for automatic switching preparation to a terminal, and detecting an obtained measurement report for the automatic switching preparation sent by the terminal;
when the terminal is determined to support the automatic switching function according to the measurement report aiming at the automatic switching preparation, sending an automatic switching request to a target base station needing the automatic switching preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
Further, the step of sending an automatic handover request to a target base station requiring automatic handover preparation includes:
selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
Further, the step of sending an automatic handover request to a target base station requiring automatic handover preparation includes:
and selecting the target base station needing automatic handover preparation according to the cell meeting the measurement report condition of the automatic handover preparation and indicated in the measurement report of the automatic handover preparation, and sending an automatic handover request to the target base station needing automatic handover preparation.
Further, the selecting the target base station requiring the automatic handover preparation according to the cell satisfying the measurement report condition for the automatic handover preparation indicated in the measurement report for the automatic handover preparation includes:
selecting the base station to which the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station requiring the automatic handover preparation; and/or
Selecting a base station to which a neighbor cell of a cell satisfying the measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation belongs as the target base station requiring automatic handover preparation.
Further, before sending an automatic handover request to a target base station requiring automatic handover preparation, the method further includes:
sending a target cell list with terminal context information to the terminal; or
After sending an automatic handover request to a target base station requiring automatic handover preparation, the method further comprises:
and sending the target cell list with the terminal context information to the terminal.
Further, the measurement report condition prepared for automatic handover is more relaxed or the same as the condition for triggering terminal automatic handover.
Further, the measurement event in the measurement report condition configuration prepared for automatic switching is one of A2-1, A3-1, A4 and A5 events.
Further, the method also comprises the following steps:
activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or
When the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or
And when determining that the terminal supports the automatic switching function and receiving a request for activating the automatic switching function, activating the automatic switching function of the terminal.
Further, the method also comprises the following steps:
when the terminal is determined to support the automatic switching function, sending a measurement configuration message aiming at activating the automatic switching function to the terminal, and detecting an obtained measurement report aiming at activating the automatic switching function, which is sent by the terminal; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
Further, the measurement report condition for activating the automatic switching function is more relaxed or the same than the condition for triggering the terminal automatic switching;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
Further, the measurement event in the measurement report condition configuration for activating the auto-switching function is one of A2-1, A3-1, A4 and A5 events.
Further, the step of activating the automatic switching function of the terminal includes:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Further, the method also comprises the following steps:
acquiring User Equipment (UE) capability information of the terminal;
and determining whether the terminal supports an automatic switching function or not according to the UE capability information of the terminal.
Further, after sending the automatic handover request to the target base station that needs the automatic handover preparation, the method further includes:
sending a measurement configuration message for canceling automatic switching preparation to the terminal, and detecting an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and sending an automatic switching cancellation request to a target base station which cancels the automatic switching preparation according to the measurement report aiming at the automatic switching cancellation preparation.
Further, the step of sending the request for canceling automatic handover to the target base station for canceling automatic handover preparation includes:
selecting a target base station for canceling automatic handover preparation according to the cell which meets the measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and sending a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
Further, the step of selecting a target base station for cancellation of automatic handover preparation according to a cell satisfying the measurement report condition for cancellation of automatic handover preparation indicated in the measurement report for cancellation of automatic handover preparation includes:
selecting a base station, as a target base station for canceling automatic handover preparation, of which at least one cell satisfies the measurement report condition for canceling automatic handover preparation according to cells satisfying the measurement report condition for canceling automatic handover preparation indicated in the measurement report for canceling automatic handover preparation; or
And selecting a base station, as the target base station for canceling the automatic handover preparation, of which all cells meet the measurement report condition for canceling the automatic handover preparation according to the cells meeting the measurement report condition for canceling the automatic handover preparation indicated in the measurement report for canceling the automatic handover.
Further, the measurement report condition for canceling the automatic handover preparation is stricter or the same as a condition for not triggering the terminal automatic handover.
Further, the measurement event in the measurement report condition configuration for canceling automatic handover preparation is an A2-2 or A3-2 event.
Further, after activating the automatic switching function of the terminal, the method further includes:
acquiring the channel occupancy rate, and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or
And when receiving a request for deactivating the automatic switching function, which is sent by the terminal, deactivating the automatic switching function of the terminal.
Further, the channel occupancy is the number of detected cells of other base stations except the base station; or
The channel occupancy rate is the ratio of the number of times of detecting channel occupancy before sending data in a first preset time to the total number of times of detecting channel occupancy; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
Further, after activating the automatic switching function of the terminal, the method further includes:
sending a measurement configuration message aiming at the deactivation of the automatic switching function to the terminal, and detecting an obtained measurement report aiming at the deactivation of the automatic switching function sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement report aiming at the deactivation of the automatic switching function, deactivating the automatic switching function of the terminal.
Further, the measurement report condition for deactivating the automatic handover function is stricter or the same as a condition for not triggering the terminal automatic handover.
Further, the measurement event in the measurement report condition configuration for deactivating the automatic switching function is an A2-2 or A3-2 event.
To solve the above technical problem, an embodiment of the present invention further provides a base station, including:
the system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for sending a measurement configuration message aiming at automatic switching preparation to a terminal and detecting an acquired measurement report aiming at the automatic switching preparation sent by the terminal;
a first sending module, configured to send an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function according to the measurement report for the automatic handover preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
Further, the first transmitting module comprises:
the selection submodule is used for selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
the first sending submodule is used for sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
Further, the first transmitting module comprises:
and a second sending submodule, configured to select the target base station requiring automatic handover preparation according to the cell that satisfies the measurement report condition of the automatic handover preparation and is indicated in the measurement report of the automatic handover preparation, and send an automatic handover request to the target base station requiring automatic handover preparation.
Further, the second transmission submodule includes:
a first selection unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a cell indicated in the measurement report for automatic handover preparation satisfies a measurement report condition for automatic handover preparation belongs; and/or
A second selecting unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a neighboring cell of a cell that satisfies a measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation belongs.
Further, the method also comprises the following steps:
a second sending module, configured to send a target cell list with terminal context information to the terminal before sending an automatic handover request to a target base station that needs automatic handover preparation; or after sending an automatic handover request to a target base station needing automatic handover preparation, sending a target cell list with terminal context information to the terminal.
Further, the measurement report condition prepared for automatic handover is more relaxed or the same as the condition for triggering terminal automatic handover.
Further, the measurement event in the measurement report condition configuration prepared for automatic switching is one of A2-1, A3-1, A4 and A5 events.
Further, the method also comprises the following steps:
the first activation module is used for activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or when the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or when the terminal is determined to support the automatic switching function and an automatic switching function activating request sent by the terminal is received, activating the automatic switching function of the terminal.
Further, the method also comprises the following steps:
the second detection module is used for sending a measurement configuration message aiming at activating the automatic switching function to the terminal and detecting an acquired measurement report aiming at activating the automatic switching function and sent by the terminal when the terminal is determined to support the automatic switching function; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and the second activation module is used for activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
Further, the measurement report condition for activating the automatic switching function is more relaxed or the same than the condition for triggering the terminal automatic switching;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
Further, the measurement event in the measurement report condition configuration for activating the auto-switching function is one of A2-1, A3-1, A4 and A5 events.
Further, the second activation module is to:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Further, the method also comprises the following steps:
an obtaining module, configured to obtain user equipment UE capability information of the terminal;
and the determining module is used for determining whether the terminal supports the automatic switching function or not according to the UE capability information of the terminal.
Further, the method also comprises the following steps:
a third detection module, configured to send a measurement configuration message for canceling automatic switching preparation to the terminal, and detect an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and a third sending module, configured to send an automatic handover cancellation request to the target base station that cancels the automatic handover preparation according to the measurement report for canceling the automatic handover preparation.
Further, the third sending module includes:
and a third sending submodule, configured to select a target base station for canceling automatic handover preparation according to a cell that satisfies a measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and send a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
Further, the third sending submodule includes:
a third selecting unit, configured to select, as a target base station for canceling automatic handover preparation, a base station in which at least one cell included in the cell satisfies a measurement report condition for canceling automatic handover preparation, according to a cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover preparation; or
A fourth selecting unit, configured to select, as the target base station for canceling automatic handover preparation, a base station in which all cells included in the cell satisfy the measurement report condition for canceling automatic handover preparation, according to the cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover.
Further, the measurement report condition for canceling the automatic handover preparation is stricter or the same as a condition for not triggering the terminal automatic handover.
Further, the measurement event in the measurement report condition configuration for canceling automatic handover preparation is an A2-2 or A3-2 event.
Further, the method also comprises the following steps:
the first deactivation module is used for acquiring the channel occupancy rate and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or when receiving a request for deactivating the automatic switching function sent by the terminal, deactivating the automatic switching function of the terminal.
Further, the channel occupancy is the number of detected cells of other base stations except the base station; or
The channel occupancy rate is the ratio of the number of times that a channel is detected to be occupied before data is sent within a first preset time to the total number of times that the channel is detected to be occupied; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
Further, the method also comprises the following steps:
a fourth detection module, configured to send a measurement configuration message for deactivating an automatic switching function to the terminal, and detect an acquired measurement report for deactivating the automatic switching function, where the measurement configuration message is sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and the second deactivation module is used for deactivating the automatic switching function of the terminal according to the measurement report aiming at deactivating the automatic switching function.
Further, the measurement report condition for deactivating the automatic handover function is stricter or the same as a condition for not triggering the terminal automatic handover.
Further, the measurement event in the measurement report condition configuration for deactivating the automatic switching function is an A2-2 or A3-2 event.
In order to solve the above technical problem, an embodiment of the present invention further provides a method for automatically switching a terminal, which is applied to the terminal, and is characterized by including:
receiving a measurement configuration message which is sent by a base station and prepared for automatic switching; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
according to the measurement configuration message prepared for automatic switching, when the measurement report condition prepared for automatic switching is met, a measurement report prepared for automatic switching is sent to the base station, so that the base station receives the measurement report prepared for automatic switching and sends an automatic switching request to a target base station needing automatic switching preparation when the terminal is determined to support an automatic switching function.
Further, the method also comprises the following steps:
acquiring the channel occupancy rate, and sending a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold value;
and activating an automatic switching function according to the indication of the base station.
Further, the method also comprises the following steps:
receiving a measurement configuration message which is sent by the base station and aims at activating an automatic switching function; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
according to the measurement configuration message for activating automatic switching, sending a measurement report for activating automatic switching to the base station when the measurement report condition for activating automatic switching is met;
and activating an automatic switching function according to the indication of the base station.
Further, the step of activating the automatic switching function according to the indication of the base station includes:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Further, the method also comprises the following steps:
receiving a measurement configuration message sent by the base station for canceling automatic switching preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
and according to the measurement configuration message for canceling the automatic switching, sending a measurement report for canceling the automatic switching to the base station when the measurement report condition for canceling the automatic switching preparation is met.
Further, the method also comprises the following steps:
and deactivating the automatic switching function according to the indication of the base station.
Further, before deactivating the automatic handover function according to the indication of the base station, the method further includes:
and acquiring the channel occupancy rate, and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
Further, before deactivating the automatic handover function according to the indication of the base station, the method further includes:
receiving a measurement configuration message for deactivating an automatic switching function, which is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement configuration message for deactivating the automatic switching function, sending a measurement report for deactivating the automatic switching function to the base station when the measurement report condition for deactivating the automatic switching function is met.
To solve the above technical problem, an embodiment of the present invention further provides a terminal, including:
a first receiving module, configured to receive a measurement configuration message sent by a base station for automatic handover preparation; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
a fourth sending module, configured to send, according to the measurement configuration message for automatic handover preparation, a measurement report for automatic handover preparation to the base station when the measurement report condition for automatic handover preparation is satisfied, so that the base station receives the measurement report for automatic handover preparation and sends, when it is determined that the terminal supports an automatic handover function, an automatic handover request to a target base station that needs automatic handover preparation.
Further, the method also comprises the following steps:
a fifth sending module, configured to obtain a channel occupancy rate, and send a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold;
and the third activation module is used for activating the automatic switching function according to the indication of the base station.
Further, the method also comprises the following steps:
a second receiving module, configured to receive a measurement configuration message for activating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
a sixth sending module, configured to send, according to the measurement configuration message for activating automatic handover, a measurement report for activating automatic handover to the base station when the measurement report condition for activating automatic handover is satisfied;
and the fourth activation module is used for activating the automatic switching function according to the indication of the base station.
Further, the third activation module is configured to:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Further, the method also comprises the following steps:
a third receiving module, configured to receive a measurement configuration message sent by the base station for canceling automatic handover preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
a seventh sending module, configured to send, according to the measurement configuration message for canceling automatic handover, a measurement report for canceling automatic handover to the base station when the measurement report condition for canceling automatic handover preparation is satisfied.
Further, the method also comprises the following steps:
and the third deactivation module is used for deactivating the automatic switching function according to the indication of the base station.
Further, the method also comprises the following steps:
and the eighth sending module is used for acquiring the channel occupancy rate and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
Further, the method also comprises the following steps:
a fourth receiving module, configured to receive a measurement configuration message for deactivating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
a ninth sending module, configured to send, according to the measurement configuration message for deactivating an automatic handover function, a measurement report for deactivating the automatic handover function to the base station when the measurement report condition for deactivating the automatic handover function is satisfied.
The technical scheme of the invention has the following beneficial effects:
in the method for automatically switching the terminal, the base station sends a measurement configuration message for automatic switching preparation to the terminal and detects an acquired measurement report for the automatic switching preparation sent by the terminal; when the terminal is determined to support the automatic switching function according to the measurement report prepared for automatic switching, sending an automatic switching request to a target base station needing automatic switching preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover. In this way, the source base station initiates the automatic handover request to the target base station only when determining that the terminal supports the automatic handover function and receives the measurement report for the automatic handover preparation sent by the terminal, so that the time for initiating the handover preparation is effectively determined, and the problem of increasing the signaling overhead of X2 caused by the invalid handover preparation of the source base station is avoided.
Drawings
Fig. 1 is a flowchart illustrating a method for automatic terminal handover according to a first embodiment of the present invention applied to a base station;
FIG. 2 is a flowchart illustrating a second embodiment of a method for automatic handover of a terminal according to the present invention applied to a base station;
FIG. 3 is a signaling flow chart of an application scenario in which the method for automatic terminal switching of the present invention is applied to a base station;
FIG. 4 is a signaling flowchart of another application scenario in which the method for automatic terminal switching according to the present invention is applied to a base station;
FIG. 5 is a signaling flowchart illustrating an application scenario of the method for automatic terminal switching according to the present invention applied to a base station;
FIG. 6 is a signaling flowchart of another application scenario in which the method for automatic terminal switching according to the present invention is applied to a base station;
FIG. 7 is a flowchart illustrating a method for automatic handover of a terminal according to a third embodiment of the present invention applied to a base station;
FIG. 8 is a signaling flowchart illustrating an application scenario of the method for automatic terminal switching according to the present invention applied to a base station;
FIG. 9 is a signaling flowchart of another application scenario in which the method for automatic terminal switching according to the present invention is applied to a base station;
FIG. 10 is a diagram illustrating a base station according to the present invention;
FIG. 11 is a flowchart illustrating an application of the method for automatic terminal switching according to the present invention to a terminal;
fig. 12 is a schematic structural diagram of a terminal according to the present invention;
FIG. 13 is a schematic diagram of another exemplary base station;
fig. 14 is another structural diagram of the terminal of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
First embodiment
Referring to fig. 1, a method for automatically switching a terminal according to an embodiment of the present invention is applied to a base station, and includes:
step 101, sending a measurement configuration message for automatic switching preparation to a terminal, and detecting an acquired measurement report for automatic switching preparation sent by the terminal.
Here, the source base station transmits a measurement configuration message prepared for automatic handover to the terminal, wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover. And the terminal performs channel measurement according to the measurement configuration message prepared for automatic switching, and sends a measurement report to the source base station when the measurement meets the measurement report condition prepared for automatic switching. In practical applications, the base station may perform measurement configuration for the terminal prepared for automatic handover under certain conditions, for example, when the terminal measures that the serving cell signal quality is lower than a certain threshold, or when the automatic handover function of the terminal is activated.
And 102, sending an automatic switching request to a target base station needing automatic switching preparation when the terminal is determined to support the automatic switching function according to the measurement report aiming at the automatic switching preparation.
Here, when the source base station receives a measurement report for automatic handover preparation and determines that the terminal supports the automatic handover function, it transmits an automatic handover request to a target base station that requires the automatic handover preparation.
According to the method for automatically switching the terminal, provided by the embodiment of the invention, the source base station initiates the automatic switching request to the target base station when the source base station determines that the terminal supports the automatic switching function and receives the measurement report which is sent by the terminal and aims at the automatic switching preparation, so that the time for initiating the switching preparation is effectively determined, and the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station is avoided.
Optionally, in a specific implementation, the measurement event in the measurement report condition configuration prepared for automatic switching may be one of events a2-1, A3-1, a4, and a5.
It should be noted that the measurement report condition for the automatic handover preparation should be looser or the same as the condition for triggering the terminal automatic handover, that is, the measurement report condition for the automatic handover preparation sent by the terminal should be satisfied before the condition for triggering the terminal automatic handover, which can ensure that the terminal can complete the handover preparation before performing the automatic handover, thereby successfully completing the handover, and avoiding unnecessary handover delay (i.e., delay for the target base station to actively request the source base station to acquire the terminal context information) introduced by lack of the terminal context information at the target base station when the terminal accesses the target base station.
For example, because the A2-1 event is more lenient than the A3-1 event condition, the measurement event in the measurement report condition configuration prepared for automatic handover may be configured as A2-1, i.e., before the A3-1 event that triggers terminal automatic handover; alternatively, the measurement event in the configuration of the measurement report condition prepared for automatic handover may be configured as a3-1, but the configuration of the measurement report condition prepared for automatic handover is more relaxed than the condition triggering automatic handover of the terminal, for example, the relative threshold for neighbor cell signal strength to be higher than the serving cell signal strength is configured to be lower (i.e., lower offset value) or a shorter hysteresis time value is configured.
Optionally, in step 102, the step of sending an automatic handover request to a target base station that needs automatic handover preparation includes:
step 1021, selecting the base station supporting the automatic switching function as the target base station needing the automatic switching preparation.
Here, the source base station may select a base station supporting an automatic handover function as a target base station requiring an automatic handover preparation to ensure efficient progress of the automatic handover.
Step 1022, sending an automatic handover request to the target base station requiring automatic handover preparation; wherein, the automatic switching request includes the context information of the terminal.
Here, the source base station transmits an automatic handover request to the target base station requiring preparation for automatic handover, for example, a base station supporting an automatic handover function among base stations belonging to neighboring cells is selected as the target base station requiring preparation for automatic handover for the terminal, and the automatic handover request includes context information of the terminal. The target base station can reserve special resources for the terminal after receiving the automatic switching request, or does not reserve any special resources for the terminal, and then sends an automatic switching request response to the source base station, which is different from the traditional switching that the automatic switching request does not carry a switching command.
Optionally, in step 102, the step of sending an automatic handover request to a target base station that needs automatic handover preparation includes:
step 1023, selecting the target base station requiring automatic handover preparation according to the cell meeting the measurement report condition of automatic handover preparation indicated in the measurement report of automatic handover preparation, and sending an automatic handover request to the target base station requiring automatic handover preparation.
In the existing scheme, the target base station sending the automatic handover preparation request is one or more preset base stations, and is the same for each terminal. In the embodiment of the present invention, through step 1023, the source base station may flexibly select different target base stations for different terminals according to the measurement report prepared for automatic handover.
Further, the step 1023 includes:
selecting the base station to which the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station requiring the automatic handover preparation; and/or selecting the base station to which the neighbor cell of the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station needing the automatic handover preparation.
Here, the cell signal quality satisfying the measurement report condition prepared for automatic handover in the measurement report is high, the probability of automatic handover of the terminal is high, and the source base station may select, as the target base station requiring automatic handover preparation, the base station to which the cell satisfying the measurement report condition prepared for automatic handover indicated in the measurement report prepared for automatic handover belongs. However, since the measurement report condition of the automatic handover preparation is satisfied before triggering the terminal to perform automatic handover, the terminal is not necessarily handed over to the cell indicated in the measurement report, and the base station may select more target base stations of the automatic handover preparation, for example, select a base station to which a neighboring cell of the cell satisfying the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as a target base station requiring the automatic handover preparation, so as to avoid that the target base station does not have additional time delay introduced by the terminal context information.
Optionally, before sending the automatic handover request to the target base station that needs automatic handover preparation, the method further includes:
and sending the target cell list with the terminal context information to the terminal.
Here, the source base station may select a cell under the selected automatic handover-prepared target base station as a target cell having the terminal context information, for example, select a cell that satisfies a measurement report condition for automatic handover preparation indicated in a measurement report for automatic handover preparation as a target cell having the terminal context information.
Or after sending an automatic handover request to a target base station which needs automatic handover preparation, the method further comprises the following steps:
and sending the target cell list with the terminal context information to the terminal.
Here, the source base station may regard the cell that accepts the handover request as the target cell with the terminal context information after receiving the automatic handover request response transmitted by the target base station.
At this time, because the target cells sent by the source base station to the terminal are all cells in which the terminal context information is already stored, the terminal can preferentially select the cells as the target cells for handover when automatically handing over, thereby avoiding unnecessary handover delay (i.e. delay of the target base station actively requesting to acquire the terminal context information from the source base station) caused by lack of the terminal context of the target base station for handover.
Further, the source base station should determine whether to send an automatic handover request to the target base station that needs automatic handover preparation according to whether the terminal activates the automatic handover function, and initiate the automatic handover request to the terminal source base station that has activated the automatic handover function.
The method for automatically switching the terminal can effectively determine the time for initiating the switching preparation, and avoids the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station.
The prior art does not specify conditions for activating and deactivating automatic handover, which may result in unnecessary handover of the terminal. The method for automatically switching the terminal also specifies the conditions for activating and deactivating the automatic switching of the terminal by the source base station, thereby avoiding the unnecessary automatic switching of the terminal.
The following describes a process of activating an automatic terminal switching function by a source base station in the embodiment of the present invention.
Optionally, the method for automatically switching the terminal according to the embodiment of the present invention further includes:
and 103, acquiring the UE capability information of the terminal.
Here, the source base station may receive UE capability information transmitted by the terminal or receive capability information of the UE of the terminal transmitted by another base station.
And step 104, determining whether the terminal supports the automatic switching function or not according to the UE capability information of the terminal.
Here, the terminal supporting the auto-switching function includes an auto-switching function indication in the UE capability information transmitted to the network side, and the source base station may determine whether the terminal supports the auto-switching function according to the UE capability information.
Optionally, the method for automatically switching the terminal according to the embodiment of the present invention further includes:
and 105, activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function.
Here, if it is determined that the terminal supports the automatic handover function, the source base station may instruct the terminal to activate the automatic handover function.
Or step 106, when it is determined that the terminal supports the automatic switching function, acquiring the occupancy rate of the channel, and when the occupancy rate of the channel is greater than a first preset threshold, activating the automatic switching function of the terminal.
Here, when the source base station determines that the terminal supports the automatic handover function, it further determines whether to activate the automatic handover function of the terminal according to the channel occupancy. If the currently detected channel occupancy rate or the average channel occupancy rate detected in the preset time exceeds a specified threshold (a first preset threshold), the terminal is instructed to activate the automatic switching function, because the higher the detected channel occupancy rate is, the less idle subframes available to the source base station is, and the larger the time delay for sending the switching command is.
Or step 107, when it is determined that the terminal supports the automatic switching function and receives a request for activating the automatic switching function, the automatic switching function of the terminal is activated.
Here, the source base station instructs the terminal to activate the automatic switching function when receiving an automatic switching function activation request sent by the terminal, wherein the terminal may also determine whether to send the automatic switching function activation request according to the channel occupancy detected by the terminal itself, and if the currently detected channel occupancy or the average channel occupancy detected within a preset time exceeds a specified threshold, the automatic switching function activation request is sent, because detecting that the higher the channel occupancy is, the less idle subframes available to the terminal is, the larger the time delay for sending the measurement report is.
Wherein the occupancy of the channel may be defined as a number of detected cells of the base station other than the base station.
Here, when the source base station detects that the number of other base station cells exceeds a specified number, it may be considered that the channel occupancy exceeds a specified threshold (first preset threshold), and the terminal is instructed to activate the automatic handover function.
Or the channel occupancy may be defined as a ratio of the number of times that the channel is detected to be occupied before transmitting data within a first preset time to the total number of times of channel occupancy detection. Or the occupancy rate may be defined as a ratio of the number of times that the channel occupancy is detected to the total number of times that the channel occupancy is detected when the channel occupancy detection is periodically performed within the second preset time.
Here, the channel occupancy reflects the probability of successful LBT when transmitting downlink data. The Channel occupancy detection may be a CCA (Clear Channel Assessment), but also other Channel detections, such as an initial Clear Channel Assessment initial CCA or an extended Clear Channel Assessment extended CCA. Successful detection of channel occupancy may refer to successful CCA once, or successful CCA continuous detection for multiple times.
Or the occupancy may be defined as a ratio of a time at which an average Received Signal Strength (RSS) detected within a third preset time exceeds a third preset threshold to the third preset time.
For example, if it is detected that the RSS of N subframes exceeds a third preset threshold within the T subframes, the channel occupancy is N/T.
Optionally, the method for automatically switching the terminal according to the embodiment of the present invention further includes:
step 108, when it is determined that the terminal supports the automatic switching function, sending a measurement configuration message for activating the automatic switching function to the terminal, and detecting an acquired measurement report for activating the automatic switching function sent by the terminal; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function.
Here, the source base station transmits to the terminal a measurement configuration message for activating the automatic handover function, which includes a measurement object configuration and a measurement report condition configuration. In a specific implementation, the base station may send a measurement configuration message for activating the automatic handover function to the terminal based on a certain condition, for example, when it is determined to initiate automatic handover preparation to the target base station (i.e., in the embodiment of the present invention, when a measurement report for automatic handover preparation sent by the terminal is received). And the terminal performs channel measurement according to the measurement configuration message aiming at the activation of the automatic switching function, and sends a measurement report to the source base station when the measurement meets the measurement report condition aiming at the activation of the automatic switching function.
And step 109, activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
Here, the source base station receives a measurement report for activating the automatic handover function, instructing the terminal to activate the automatic handover function.
Optionally, in a specific implementation, the measurement event in the configuration of the measurement report condition for activating the automatic switching function is one of events a2-1, A3-1, a4, and a5.
It should be noted that, the measurement report condition for activating the automatic switching function is looser or the same as the condition for triggering the terminal automatic switching, that is, the measurement report condition for the terminal to send the activation automatic switching function should be satisfied at the same time or before the condition for triggering the terminal automatic switching, so that the terminal can be ensured to activate the automatic switching function at the same time or before the execution of the automatic switching, thereby performing the switching smoothly and avoiding causing unnecessary switching delay.
For example, because the A2-1 event is more lenient than the A3-1 event condition, the measurement event in the measurement report condition configuration for activating the auto-switch function may be configured as A2-1, i.e., before the A3-1 event triggering the terminal auto-switch; alternatively, the measurement event in the configuration of the measurement report condition for activating the automatic handover function may be configured as a3-1, but the measurement report condition for activating the automatic handover function is configured more loosely than the condition for triggering the automatic handover of the terminal, for example, the relative threshold for the neighbor cell signal strength to be higher than the serving cell signal strength is configured to be lower (i.e., lower offset value) or a shorter hysteresis time value is configured.
Further, the measurement report condition for the automatic handover preparation is stricter or the same as the measurement report condition for the activation of the automatic handover function, that is, the condition that the terminal sends the measurement report for the automatic handover preparation should be satisfied at the same time or later than the condition for the activation of the automatic handover function of the terminal, which can ensure that the target base station completes the handover preparation at the same time or later than the time of the activation of the automatic handover function of the terminal, thereby avoiding unnecessary handover preparation.
For example, if the measurement event in the measurement report condition configuration for activating the auto changeover function is configured as A3-1, the measurement event in the measurement report condition configuration prepared for the auto changeover may be configured as a 5; alternatively, if the measurement event in the measurement report condition configuration for activating the automatic handover function is configured as a2-1, the measurement event in the measurement report condition configuration prepared for automatic handover should be a stricter a2-1 event, i.e., a lower serving cell signal strength threshold.
In particular, the measurement report condition for activating the automatic handover function may be stricter than the measurement report condition for the automatic handover preparation, that is, the measurement report condition for activating the automatic handover function transmitted by the terminal may be satisfied later than the measurement report condition for the automatic handover preparation.
Optionally, when the source base station indicates the terminal to activate the automatic handover function, a target cell list supporting the automatic handover function may also be sent. The purpose of the target cell list supporting the automatic handover function is to enable the terminal to select a target cell according to the base stations in the list so as to avoid handover failure.
In the embodiment of the invention, the automatic switching function of the terminal activated by the source base station can be explicit indication or implicit activation. Optionally, the step of activating the automatic switching function of the terminal includes:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
In the hybrid automatic handover, after a source base station receives a measurement report of the automatic handover sent when triggering the hybrid automatic handover of a terminal (i.e. starting the automatic handover timer), a traditional handover preparation request is sent to a selected traditional handover target cell, then a handover command is sent to the terminal, and if the terminal receives the handover command before the automatic handover timer is overtime, the terminal stops timing by the timer and switches to the target cell indicated by the handover command. The base station may also send a conventional handover target cell list to the terminal, where the conventional handover target cell list includes target cells ready for conventional handover. If the terminal receives the list before the automatic handover timer times out, the terminal will first consider selecting the target cell ready for conventional handover when performing automatic handover after the timer times out, since this will further reduce the handover delay.
The method for automatically switching the terminal of the embodiment of the invention specifies the condition that the source base station activates the automatic switching of the terminal, and avoids the unnecessary automatic switching of the terminal.
The following describes a process of deactivating an automatic terminal switching function by a source base station in the embodiment of the present invention.
Optionally, after the base station activates the terminal automatic switching function, the method for terminal automatic switching according to the embodiment of the present invention further includes:
and step 110, acquiring the channel occupancy rate, and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value.
Here, the source base station determines whether to deactivate the automatic handover function of the terminal according to the channel occupancy. And if the currently detected channel occupancy rate or the average channel occupancy rate detected in the preset time is smaller than a specified threshold (a second preset threshold), indicating the terminal to deactivate the automatic switching function.
Or step 111, when receiving the request for deactivating the automatic switching function sent by the terminal, deactivating the automatic switching function of the terminal.
Here, when the source base station receives a request for deactivating the automatic switching function sent by the terminal, the source base station instructs the terminal to deactivate the automatic switching function, wherein the terminal can also determine whether to send the request for deactivating the automatic switching function according to the channel occupancy rate detected by the terminal, and if the currently detected channel occupancy rate or the average channel occupancy rate detected within the preset time is less than a specified threshold, the request for deactivating the automatic switching function is sent.
Wherein the occupancy of the channel may be defined as a number of detected cells of the base station other than the base station.
Here, when the source base station detects that the number of other base station cells is lower than the specified number, it may be considered that the channel occupancy is smaller than a specified threshold (a second preset threshold), and the terminal is instructed to deactivate the automatic handover function.
Or the channel occupancy may be defined as a ratio of the number of times that the channel is detected to be occupied before transmitting data within a first preset time to the total number of times of channel occupancy detection. Or the occupancy rate may be defined as a ratio of the number of times that the channel occupancy is detected to the total number of times that the channel occupancy is detected when the channel occupancy detection is periodically performed within the second preset time.
Here, the channel occupancy reflects the probability of successful LBT when transmitting downlink data. The channel occupancy detection may be CCA, or other channel detection, such as initial CCA or extended CCA. Successful detection of channel occupancy may refer to successful CCA once, or successful CCA continuous detection for multiple times.
Or the occupancy may be defined as a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold for a third preset time to the third preset time.
For example, if it is detected that the RSS of N subframes exceeds a third preset threshold within the T subframes, the channel occupancy is N/T.
Optionally, after the base station activates the terminal automatic switching function, the method for terminal automatic switching according to the embodiment of the present invention further includes:
step 112, sending a measurement configuration message for deactivating the automatic switching function to the terminal, and detecting an obtained measurement report for deactivating the automatic switching function sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function.
Here, the source base station transmits a measurement configuration message for deactivating the automatic handover function, which includes a measurement object configuration and a measurement report condition configuration, to the terminal. In actual application, the base station may send a measurement configuration message for deactivating the automatic handover function to the terminal when determining to cancel the automatic handover preparation. And the terminal performs channel measurement according to the measurement configuration message for deactivating the automatic switching function, and sends a measurement report to the source base station when the measurement meets the measurement report condition for deactivating the automatic switching function.
And 113, deactivating the automatic switching function of the terminal according to the measurement report for deactivating the automatic switching function.
Here, the source base station receives a measurement report for deactivating the automatic handover function, and instructs the terminal to deactivate the automatic handover function.
Optionally, in a specific implementation, the measurement event in the configuration of the measurement report condition for deactivating the automatic handover function is an a2-2 or an A3-2 event.
It should be noted that, for the condition of the measurement report for deactivating the automatic handover function to be stricter or the same as the condition for not triggering the terminal automatic handover, that is, for the condition for not triggering the terminal automatic handover, the condition that the terminal sends the measurement report for deactivating the automatic handover should be satisfied at the same time or later than the condition for not triggering the terminal automatic handover, so that it can be ensured that the terminal deactivates the automatic handover function when the automatic handover is not performed.
For example, because the a2-2 event is stricter than the A3-2 event, the measurement event in the measurement report condition configuration for deactivating the automatic handover function may be configured as a2-2, i.e., the terminal does not perform the automatic handover when the a2-2 event is satisfied after the A3-2 event that does not trigger the terminal automatic handover; alternatively, the measurement event a3-2 in the measurement report condition configuration for deactivating the automatic handover function may be configured, but the measurement report condition for deactivating the automatic handover function is configured to be stricter than the condition that does not trigger the terminal automatic handover, for example, the condition that the serving cell and neighbor cell signal strength difference is configured to be harsher (i.e., a larger offset value) or a larger hysteresis time value.
The method for automatically switching the terminal of the embodiment of the invention specifies the condition that the source base station deactivates the automatic switching of the terminal, and avoids the unnecessary automatic switching of the terminal.
According to the prior art, when the switching timer is overtime, the terminal is not accessed, the target base station cancels the switching preparation, or when the terminal receives a request for releasing the terminal context sent by the source base station after being successfully switched in other target cells, the switching preparation is cancelled, namely the terminal context information is deleted. However, according to the embodiment of the present invention, the condition for automatic handover preparation is looser than the condition for triggering terminal automatic handover, and the network side does not know whether the terminal performs handover or when to perform handover, and ping-pong handover preparation is easy to occur according to the prior art. The method for automatically switching the terminal can cancel the automatic switching preparation according to the measurement report for canceling the automatic switching preparation, and avoids the problem of ping-pong switching preparation.
The following describes a procedure of canceling the automatic handover preparation by the source base station in the embodiment of the present invention.
Optionally, after the base station completes preparation for automatic handover to the target base station, the method for automatic handover of a terminal according to the embodiment of the present invention further includes:
step 114, sending a measurement configuration message for canceling automatic switching preparation to the terminal, and detecting an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation.
Here, the source base station transmits a measurement configuration message for canceling automatic handover preparation to the terminal, wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation. In a specific implementation, the base station may send a measurement configuration message for canceling the preparation for automatic handover to the terminal after deactivating the automatic handover function of the terminal. And the terminal performs channel measurement according to the measurement configuration message for canceling the automatic switching preparation, and sends a measurement report to the source base station when the measurement meets the measurement report condition for canceling the automatic switching preparation.
And step 115, sending an automatic handover cancellation request to the target base station for canceling the automatic handover preparation according to the measurement report for canceling the automatic handover preparation.
Here, when the source base station receives a measurement report for canceling the preparation of automatic handover, it transmits a cancel automatic handover request, which may include identification information of the terminal, to the target base station canceling the preparation of automatic handover.
Optionally, in a specific implementation, the measurement event in the measurement report condition configuration for canceling the preparation for automatic handover may be an a2-2 or A3-2 event.
It should be noted that the measurement report condition for canceling the automatic handover preparation is stricter than the condition for not triggering the terminal automatic handover, that is, the condition for the terminal to send the measurement report condition for canceling the automatic handover preparation should be satisfied later than the condition for not triggering the terminal automatic handover, so that it can be ensured that the target base station cancels the automatic handover preparation when the terminal does not perform the automatic handover.
In particular, the measurement report condition for canceling the automatic handover preparation is more relaxed or the same as the measurement report condition for deactivating the automatic handover function, i.e. the condition that the terminal sends the measurement report for canceling the automatic handover preparation should be satisfied at the same time or before compared with the condition that the terminal deactivates the automatic handover, so that it can be ensured that the target base station completes the cancellation of the handover preparation at the same time or before the terminal deactivates the automatic handover function. If the automatic handover preparation is not canceled when the terminal automatic handover function is deactivated, the base station may cancel the automatic handover preparation when a measurement report for canceling the automatic handover preparation is not received.
Optionally, in step 115, the step of sending an automatic handover cancellation request to the target base station for canceling the automatic handover preparation includes:
step 1151, selecting a target base station for canceling automatic handover preparation according to the cell satisfying the measurement report condition for canceling automatic handover preparation indicated in the measurement report for canceling automatic handover preparation, and sending a request for releasing context information of the terminal to the target base station for canceling automatic handover preparation.
At this time, the source base station may flexibly select a target base station for canceling the automatic handover preparation according to the measurement report for canceling the automatic handover preparation, and request to release the terminal context information.
Further, the step 1151 includes:
selecting a base station, as a target base station for canceling automatic handover preparation, of which at least one cell satisfies the measurement report condition for canceling automatic handover preparation according to cells satisfying the measurement report condition for canceling automatic handover preparation indicated in the measurement report for canceling automatic handover preparation; or
And selecting a base station, as the target base station for canceling the automatic handover preparation, of which all cells meet the measurement report condition for canceling the automatic handover preparation according to the cells meeting the measurement report condition for canceling the automatic handover preparation indicated in the measurement report for canceling the automatic handover.
Here, the source base station may select, as the target base station from which the automatic handover preparation is cancelled, a base station in which at least one cell included satisfies a measurement report condition for canceling the automatic handover preparation. And selecting a base station, as the target base station for canceling the automatic handover preparation, of which all cells meet the measurement report condition for canceling the automatic handover preparation.
The method for automatically switching the terminal can cancel the automatic switching preparation according to the measurement report for canceling the automatic switching preparation, and avoids the problem of ping-pong switching preparation.
In summary, the method for automatically switching the terminal according to the embodiment of the present invention can effectively determine the time for initiating the handover preparation and select the appropriate target base station, thereby avoiding the problem of increasing the signaling overhead of X2 due to the invalid handover preparation performed by the source base station. And the conditions for activating and deactivating the automatic switching of the terminal by the source base station are specified, so that the terminal is prevented from carrying out unnecessary automatic switching. And the automatic switching preparation can be cancelled according to the measurement report aiming at cancelling the automatic switching preparation, thereby avoiding the problem of ping-pong switching preparation.
Second embodiment
The embodiment of the present invention is a specific application embodiment of the first embodiment, and specifically describes a process in which a source base station activates an automatic terminal switching function and initiates an automatic switching preparation. In the embodiment of the present invention, the source base station respectively configures trigger conditions (i.e., configures measurement report conditions) for activating the terminal automatic switching function and initiating the automatic switching preparation, where the activating the terminal automatic switching function and initiating the automatic switching preparation do not have a strict sequence, that is, the base station may send the measurement configuration for activating the terminal automatic switching function to the terminal before or after sending the measurement configuration for the automatic switching preparation.
Referring to fig. 2, a method for automatically switching a terminal according to an embodiment of the present invention is applied to a base station, and includes:
step 201, acquiring UE capability information of a terminal.
Here, the source base station may receive UE capability information transmitted by the terminal or receive capability information of the UE of the terminal transmitted by another base station.
Step 202, determining whether the terminal supports the automatic switching function according to the UE capability information of the terminal.
Here, the terminal supporting the auto-switching function includes an auto-switching function indication in the UE capability information transmitted to the network side, and the source base station may determine whether the terminal supports the auto-switching function according to the UE capability information.
Step 203, when it is determined that the terminal supports the automatic switching function, sending a measurement configuration message for activating the automatic switching function to the terminal, and detecting an acquired measurement report for activating the automatic switching function sent by the terminal; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function.
Here, the source base station transmits to the terminal a measurement configuration message for activating the automatic handover function, which includes a measurement object configuration and a measurement report condition configuration. Because there is no strict sequence between activating the terminal automatic switching function and initiating the automatic switching preparation, in a specific implementation, the base station may send a measurement configuration message for activating the automatic switching function to the terminal after determining to initiate the automatic switching preparation to the target base station. And the terminal performs channel measurement according to the measurement configuration message aiming at the activation of the automatic switching function, and sends a measurement report to the source base station when the measurement meets the measurement report condition aiming at the activation of the automatic switching function.
And 204, activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
Here, the source base station receives a measurement report for activating the automatic handover function, instructing the terminal to activate the automatic handover function.
Step 205, sending a measurement configuration message for automatic handover preparation to the terminal, and detecting an acquired measurement report for automatic handover preparation sent by the terminal.
Here, the source base station transmits a measurement configuration message prepared for automatic handover to the terminal, wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover. And the terminal performs channel measurement according to the measurement configuration message prepared for automatic switching, and sends a measurement report to the source base station when the measurement meets the measurement report condition prepared for automatic switching.
Step 206, according to the measurement report prepared for automatic handover, when it is determined that the terminal supports the automatic handover function, an automatic handover request is sent to a target base station requiring automatic handover preparation.
Here, when the source base station receives the measurement report prepared for the automatic handover and determines that the terminal supports the automatic handover function, it transmits an automatic handover request to the target base station requiring the automatic handover preparation, for example, selects a base station supporting the automatic handover function among base stations belonging to neighboring cells as the target base station requiring the automatic handover preparation for the terminal.
Further, in step 206, the step of sending an automatic handover request to the target base station requiring preparation for automatic handover includes:
step 2061, selecting the target base station requiring automatic handover preparation according to the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation, and sending an automatic handover request to the target base station requiring automatic handover preparation.
In the existing scheme, the target base station sending the automatic handover preparation request is one or more preset base stations, and is the same for each terminal. In the embodiment of the present invention, through step 2061, the source base station may flexibly select different target base stations for different terminals according to the measurement report prepared for the automatic handover.
Further, the step 2061 includes:
selecting the base station to which the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station requiring the automatic handover preparation; and/or selecting the base station to which the neighbor cell of the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station needing the automatic handover preparation.
Here, the cell signal quality satisfying the measurement report condition prepared for automatic handover in the measurement report is high, the probability of automatic handover of the terminal is high, and the source base station may select, as the target base station requiring automatic handover preparation, the base station to which the cell satisfying the measurement report condition prepared for automatic handover indicated in the measurement report prepared for automatic handover belongs. However, since the measurement report condition of the automatic handover preparation is satisfied before triggering the terminal to perform automatic handover, the terminal is not necessarily handed over to the cell indicated in the measurement report, and the base station may select more target base stations of the automatic handover preparation, for example, select a base station to which a neighboring cell of the cell satisfying the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as a target base station requiring the automatic handover preparation, so as to avoid that the target base station does not have additional time delay introduced by the terminal context information.
Optionally, before sending the automatic handover request to the target base station that needs automatic handover preparation, the method further includes:
and sending the target cell list with the terminal context information to the terminal.
Here, the source base station may select a cell under the selected automatic handover-prepared target base station as a target cell having the terminal context information, for example, select a cell that satisfies a measurement report condition for automatic handover preparation indicated in a measurement report for automatic handover preparation as a target cell having the terminal context information.
Or after sending an automatic handover request to a target base station which needs automatic handover preparation, the method further comprises the following steps:
and sending the target cell list with the terminal context information to the terminal.
Here, the source base station may regard the cell that accepts the handover request as the target cell with the terminal context information after receiving the automatic handover request response transmitted by the target base station.
At this time, because the target cells sent by the source base station to the terminal are all cells in which the terminal context information is already stored, the terminal can preferentially select the cells as the target cells for handover when automatically handing over, thereby avoiding unnecessary handover delay (i.e. delay of the target base station actively requesting to acquire the terminal context information from the source base station) caused by lack of the terminal context of the target base station for handover.
In the first application scenario of the embodiment of the present invention, the terminal is completely automatically switched, and the signaling process is as shown in fig. 3:
the method comprises the steps that a base station sends a Measurement configuration message aiming at activating an automatic switching function to a terminal, and after receiving a Measurement Report message (Measurement Report) aiming at activating the automatic switching function sent by the terminal, the base station sends an indication message (AUM active) for activating the automatic switching function to the terminal to indicate the terminal to activate the automatic switching function. Then, the base station sends a Measurement configuration message aiming at the automatic switching preparation to the terminal, and determines to initiate the automatic switching preparation and selects a target base station needing the automatic switching preparation after receiving a Measurement Report (Measurement Report) aiming at the automatic switching preparation sent by the terminal; the base station sends an automatic handover Request message (automatic HO Request) to the target base station, and the target base station sends an automatic handover Request response message (automatic HO Request ACK) to the base station. Optionally, the base station sends a Target Cell list (Target Cell list) with terminal context information to the terminal according to the received automatic handover request response message, so that the terminal may select a Cell in the Target Cell list as much as possible when selecting a handover Target Cell. The terminal makes an automatic handover decision and then sends a handover request message to the target base station to the target cell.
In this application scenario, the sending, by the base station, the measurement configuration message prepared for automatic handover to the terminal may be performed before sending the measurement configuration message for activating the automatic handover function to the terminal, that is, before the terminal makes an automatic handover decision, the following signaling flows may be performed:
a base station sends a Measurement configuration message aiming at automatic switching preparation to a terminal, and determines to initiate the automatic switching preparation and selects a target base station needing the automatic switching preparation after receiving a Measurement Report (Measurement Report) aiming at the automatic switching preparation sent by the terminal; the base station sends an automatic handover Request message (automatic HO Request) to the target base station, and the target base station sends an automatic handover Request response message (automatic HO Request ACK) to the base station. The method comprises the steps that a base station sends a Measurement configuration message aiming at activating an automatic switching function to a terminal, and after receiving a Measurement Report message (Measurement Report) aiming at activating the automatic switching function sent by the terminal, the base station sends an automatic switching function activating indication message (AUM active) to the terminal to indicate UE to activate the automatic switching function. Optionally, the base station sends a Target Cell list (Target Cell list) with terminal context information to the terminal according to the received automatic handover request response message, so that the terminal selects a Cell in the Target Cell list as much as possible when selecting a Target Cell to be handed over.
In the second application scenario of the embodiment of the present invention, a hybrid handover combining a traditional handover and an automatic terminal handover is performed under the control of a base station, and a signaling process is shown in fig. 4:
a base station sends a Measurement configuration message aiming at activating an automatic switching function to a terminal, and sends an automatic switching function activating indication (AUM active) message to the terminal after receiving a Measurement Report (Measurement Report) aiming at activating the automatic switching function sent by the terminal, and indicates the terminal to activate the automatic switching function; then, the base station sends a Measurement configuration message aiming at the automatic switching preparation to the terminal, and after receiving a Measurement Report (Measurement Report) aiming at the automatic switching preparation sent by the terminal, the base station determines to initiate the automatic switching preparation and selects a target base station needing the automatic switching preparation; the base station sends an automatic handover Request message (automatic HO Request) to the target base station, and the target base station sends an automatic handover Request response message (automatic HO Request ACK) to the base station. Optionally, the base station sends a Target Cell list (Target Cell list) with terminal context information to the terminal according to the received automatic handover request response message, so that the terminal selects a Cell in the Target Cell list as a Target Cell as much as possible when performing automatic handover after the automatic handover timer times out. When the terminal triggers the hybrid handover (satisfies the Measurement Report condition for the hybrid handover), the terminal starts an automatic handover timer and transmits a Measurement Report (Measurement Report) for the hybrid handover to the base station. The base station initiates a traditional handover preparation Request message (HO Request) to a selected traditional handover target base station, the target base station sends a handover Request response message (HO Request ACK) to the base station, and then the base station sends a handover Command (HO Command) to the terminal; and if the terminal receives the switching command before the automatic switching timer is overtime, stopping the automatic switching timer and switching to the target cell indicated by the switching command. When the automatic switching Timer is overtime (Timer Expire), the terminal is triggered to perform automatic switching, and the terminal autonomously selects a target cell and sends a switching request (HO request to target cell) to the target cell.
In this application scenario, sending, by the base station, the measurement configuration message prepared for automatic handover to the terminal may be performed before sending, to the terminal, the measurement configuration message for activating the automatic handover function, that is, before triggering the terminal hybrid handover, there may be the following signaling flow, as shown in fig. 5:
the method comprises the steps that a base station sends a Measurement configuration message aiming at automatic switching preparation to a terminal, and after receiving a Measurement Report (Measurement Report) aiming at the automatic switching preparation sent by the terminal, the base station determines to initiate the automatic switching preparation and selects a target base station needing the automatic switching preparation; the base station sends an automatic handover Request message (automatic HO Request) to the target base station, and the target base station sends an automatic handover Request response message (automatic HO Request ACK) to the base station. Optionally, the base station sends a Target Cell list (Target Cell list) with terminal context information to the terminal according to the received automatic handover request response message, so that the terminal selects a Cell in the Target Cell list as a Target Cell as much as possible when performing automatic handover after the automatic handover timer times out. Then, the base station sends a Measurement configuration message for activating the automatic switching function to the terminal, and sends an indication (AUM active) message for activating the automatic switching function to the terminal after receiving a Measurement Report (Measurement Report) for activating the automatic switching function sent by the terminal, so as to indicate the terminal to activate the automatic switching function. In a specific implementation, the base station may also implicitly activate an automatic handover function of the terminal by sending a measurement configuration message for hybrid handover.
Specifically, the base station configures the same measurement report condition for the hybrid handover and automatic handover preparation of the terminal, when the measurement report condition is met, the terminal triggers the hybrid handover (starts an automatic handover timer) and sends the measurement report, and when the base station receives the measurement report, the base station initiates the automatic handover preparation, wherein the base station uses the traditional handover preparation process to realize the automatic handover preparation. The specific flow is shown in fig. 6:
the base station sends a Measurement configuration message aiming at activating the automatic switching function to the terminal, and sends an automatic switching function activating indication (AUM active) message to the terminal after receiving a Measurement Report (Measurement Report) aiming at activating the automatic switching function sent by the terminal, so as to indicate the terminal to activate the automatic switching function. Then, the base station sends a Measurement configuration message aiming at the terminal hybrid handover to the terminal, after receiving a Measurement Report (Measurement Report) sent by the terminal, the base station selects a target base station and sends a handover Request message (HO Request) to the target base station, and the target base station sends a handover Request response message (HO Request ACK) to the base station. Wherein, the base station may not exclusively send out an indication message for activating the automatic handover function but implicitly activate the automatic handover function of the terminal by sending a measurement configuration message for hybrid handover to the terminal. In an application scenario two, the source base station can indicate the terminal to activate the automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for the terminal to determine the time length of the automatic switching timer according to the automatic switching timer configuration and start automatic switching after the automatic switching timer is overtime.
After receiving a measurement report for hybrid handover sent when the terminal starts the automatic handover timer, the source base station may send a conventional handover target cell list to the terminal, where the conventional handover target cell list includes a target cell prepared for conventional handover. If the terminal receives the list before the automatic handover timer times out, the terminal will first consider selecting the target cell ready for conventional handover when performing automatic handover after the timer times out, since this will further reduce the handover delay.
The method for automatically switching the terminal can effectively determine the time for initiating the switching preparation and select the appropriate target base station, and avoids the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station. And the condition that the source base station activates the automatic switching of the terminal is specified, and the unnecessary automatic switching of the terminal is avoided.
Third embodiment
The embodiment of the present invention is a specific application embodiment of the first embodiment, and specifically describes a process in which a source base station activates an automatic terminal switching function and initiates an automatic switching preparation. In the embodiment of the invention, the source base station configures the same trigger condition (namely the condition of configuring the measurement report) for activating the automatic terminal switching function and initiating the automatic switching preparation, and simultaneously activates the automatic terminal switching function and initiates the automatic switching preparation.
Referring to fig. 7, a method for automatically switching a terminal according to an embodiment of the present invention is applied to a base station, and includes:
step 701, acquiring UE capability information of a terminal.
Here, the source base station may receive UE capability information transmitted by the terminal or receive capability information of the UE of the terminal transmitted by another base station.
Step 702, determining whether the terminal supports the automatic switching function according to the UE capability information of the terminal.
Here, the terminal supporting the auto-switching function includes an auto-switching function indication in the UE capability information transmitted to the network side, and the source base station may determine whether the terminal supports the auto-switching function according to the UE capability information.
Step 703, sending a measurement configuration message for activating the automatic switching function and the automatic switching preparation to the terminal, and detecting an acquired measurement report for activating the automatic switching function and the automatic switching preparation sent by the terminal.
Step 704, when it is determined that the terminal supports the automatic handover function, activating the automatic handover function of the terminal according to the measurement report for activating the automatic handover function and the automatic handover preparation, and sending an automatic handover request to a target base station that needs the automatic handover preparation.
The base station may send an instruction to activate the automatic handover function to the terminal after receiving an automatic handover preparation request response sent by the target base station.
In the embodiment of the invention, the source base station can indicate the terminal to activate the automatic switching function by sending the target cell list to the terminal, and the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information.
The purpose of the target cell list supporting the automatic handover function is to enable the terminal to select a target cell according to the base stations in the list so as to avoid handover failure.
The target cell list with the terminal context information has the function of enabling the terminal to select the target cell according to the base stations in the list so as to avoid introducing extra switching delay, and can be a fixed list for the terminal under each source base station, a different list for the cell accessed by the terminal, or a different list for the terminal under each source base station. The terminal may consider first a list of target cells with terminal context information and second a list of target cells that support an automatic handover function.
Further, for an example in which the terminal under each source base station has a different target cell list with terminal context information, after the source base station receives a handover request response from the target base station, the source base station sends the cell that receives the handover request as the automatic handover target cell list with the terminal context of the terminal to the terminal.
In the first application scenario of the embodiment of the present invention, the terminal is completely automatically switched, and the signaling process is as shown in fig. 8:
a base station sends a Measurement configuration message aiming at activating an automatic switching function and automatic switching preparation to a terminal, determines to activate the automatic switching function of the terminal and selects a target base station needing the automatic switching preparation when receiving a Measurement Report (Measurement Report) aiming at activating the automatic switching function and the automatic switching preparation sent by the terminal; the base station transmits an automatic handover preparation Request message (Autonomous HO Request) to the target base station, and the target base station transmits an automatic handover preparation Request response message (Autonomous HO Request ACK) to the base station. Then, the base station sends an instruction (AUM active) message for activating the automatic switching function to the terminal, instructing the terminal to activate the automatic switching function. When the terminal determines that the automatic switching condition is met, the terminal makes an automatic switching decision and autonomously selects a target cell, and sends a switching request (HO request to target cell) to the target cell.
In the second application scenario of the embodiment of the present invention, a hybrid handover combining a traditional handover and an automatic terminal handover is performed under the control of a base station, and a signaling process is as shown in fig. 9:
the base station sends a Measurement configuration message aiming at activating the automatic switching function and the automatic switching preparation to the terminal, determines to activate the automatic switching function of the terminal and selects a target base station needing the automatic switching preparation after receiving a Measurement Report (Measurement Report) aiming at activating the automatic switching function and the automatic switching preparation sent by the terminal. The base station transmits an automatic handover preparation Request message (Autonomous HO Request) to the target base station, and the target base station transmits an automatic handover preparation Request response message (Autonomous HO Request ACK) to the base station. Then the base station sends an instruction (AUM active) message for activating the automatic switching function to the terminal, and the terminal is instructed to activate the automatic switching function. The base station sends a Measurement configuration message for hybrid handover to the terminal, and when the terminal triggers the hybrid handover (satisfies a Measurement Report condition for the hybrid handover), the terminal starts an automatic handover timer and sends a Measurement Report (Measurement Report) for the hybrid handover to the base station. The base station initiates a traditional handover preparation Request message (HO Request) to a selected traditional handover target base station, the target base station sends a handover Request response message (HO Request ACK) to the base station, and then the base station sends a handover Command (HO Command) to the terminal; and if the terminal receives the switching command before the automatic switching timer is overtime, stopping the automatic switching timer and switching to the target cell indicated by the switching command. When the automatic switching Timer is overtime (Timer Expire), the terminal is triggered to perform automatic switching, and the terminal autonomously selects a target cell and sends a switching request (HO request to target cell) to the target cell. The base station may not specifically send an indication message for activating the automatic handover function to the terminal, but implicitly instruct the terminal to activate the automatic handover function by sending a measurement configuration message for hybrid handover.
In an application scenario two, the source base station can indicate the terminal to activate the automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for the terminal to determine the time length of the automatic switching timer according to the automatic switching timer configuration and start automatic switching after the automatic switching timer is overtime.
After receiving the measurement report of automatic handover sent when the terminal starts the automatic handover timer, the source base station may send a conventional handover target cell list to the terminal, where the conventional handover target cell list includes a target cell ready for conventional handover. If the terminal receives the list before the automatic handover timer times out, the terminal will first consider selecting the target cell ready for conventional handover when performing automatic handover after the timer times out, since this will further reduce the handover delay.
The method for automatically switching the terminal can effectively determine the time for initiating the switching preparation and select the appropriate target base station, and avoids the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station. And the condition that the source base station activates the automatic switching of the terminal is specified, and the unnecessary automatic switching of the terminal is avoided.
Fourth embodiment
As shown in fig. 10, an embodiment of the present invention further provides a base station, including:
a first detection module 1001, configured to send a measurement configuration message for automatic handover preparation to a terminal, and detect an acquired measurement report for automatic handover preparation sent by the terminal;
a first sending module 1002, configured to send an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function according to the measurement report for automatic handover preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
According to the base station of the embodiment of the invention, when the terminal is determined to support the automatic switching function and the measurement report which is sent by the terminal and aims at the automatic switching preparation is received, the automatic switching request is initiated to the target base station, so that the time for initiating the switching preparation is effectively determined, and the problem that the X2 signaling overhead is increased due to the fact that the source base station performs invalid switching preparation is avoided.
Optionally, the first sending module 1002 includes:
the selection submodule is used for selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
the first sending submodule is used for sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
Optionally, the first sending module 1002 includes:
and a second sending submodule, configured to select the target base station requiring automatic handover preparation according to the cell that satisfies the measurement report condition of the automatic handover preparation and is indicated in the measurement report of the automatic handover preparation, and send an automatic handover request to the target base station requiring automatic handover preparation.
Optionally, the second sending submodule includes:
a first selection unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a cell indicated in the measurement report for automatic handover preparation satisfies a measurement report condition for automatic handover preparation belongs; and/or
A second selecting unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a neighboring cell of a cell that satisfies a measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation belongs.
Optionally, the base station of the embodiment of the present invention further includes:
a second sending module, configured to send a target cell list with terminal context information to the terminal before sending an automatic handover request to a target base station that needs automatic handover preparation; or after sending an automatic handover request to a target base station needing automatic handover preparation, sending a target cell list with terminal context information to the terminal.
Optionally, the measurement report condition prepared for automatic handover is looser or the same as the condition for triggering terminal automatic handover.
Optionally, the measurement event in the measurement report condition configuration prepared for automatic switching is one of events a2-1, A3-1, a4 and a5.
Optionally, the base station of the embodiment of the present invention further includes:
the first activation module is used for activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or when the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or when the terminal is determined to support the automatic switching function and an automatic switching function activating request sent by the terminal is received, activating the automatic switching function of the terminal.
Optionally, the base station of the embodiment of the present invention further includes:
the second detection module is used for sending a measurement configuration message aiming at activating the automatic switching function to the terminal and detecting an acquired measurement report aiming at activating the automatic switching function and sent by the terminal when the terminal is determined to support the automatic switching function; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and the second activation module is used for activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
Optionally, the measurement report condition for activating the automatic handover function is more relaxed or the same as the condition for triggering the terminal automatic handover;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
Optionally, the measurement event in the measurement report condition configuration for activating the automatic switching function is one of events a2-1, A3-1, a4 and a5.
Optionally, the first activation module or the second activation module is configured to:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Optionally, the base station of the embodiment of the present invention further includes:
an obtaining module, configured to obtain user equipment UE capability information of the terminal;
and the determining module is used for determining whether the terminal supports the automatic switching function or not according to the UE capability information of the terminal.
Optionally, the base station of the embodiment of the present invention further includes:
a third detection module, configured to send a measurement configuration message for canceling automatic switching preparation to the terminal, and detect an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and a third sending module, configured to send an automatic handover cancellation request to the target base station that cancels the automatic handover preparation according to the measurement report for canceling the automatic handover preparation.
Optionally, the third sending module includes:
and a third sending submodule, configured to select a target base station for canceling automatic handover preparation according to a cell that satisfies a measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and send a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
Optionally, the third sending sub-module includes:
a third selecting unit, configured to select, as a target base station for canceling automatic handover preparation, a base station in which at least one cell included in the cell satisfies a measurement report condition for canceling automatic handover preparation, according to a cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover preparation; or
A fourth selecting unit, configured to select, as the target base station for canceling automatic handover preparation, a base station in which all cells included in the cell satisfy the measurement report condition for canceling automatic handover preparation, according to the cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover.
Optionally, the measurement report condition for canceling the automatic handover preparation is stricter or the same as a condition for not triggering the terminal automatic handover.
Optionally, the measurement event in the configuration of the measurement report condition for canceling the automatic handover preparation is an a2-2 or A3-2 event.
Optionally, the base station of the embodiment of the present invention further includes:
the first deactivation module is used for acquiring the channel occupancy rate and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or when receiving a request for deactivating the automatic switching function sent by the terminal, deactivating the automatic switching function of the terminal.
Optionally, the channel occupancy is the number of detected cells of other base stations except the base station; or
The channel occupancy rate is the ratio of the number of times that a channel is detected to be occupied before data is sent within a first preset time to the total number of times that the channel is detected to be occupied; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
Optionally, the base station of the embodiment of the present invention further includes:
a fourth detection module, configured to send a measurement configuration message for deactivating an automatic switching function to the terminal, and detect an acquired measurement report for deactivating the automatic switching function, where the measurement configuration message is sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and the second deactivation module is used for deactivating the automatic switching function of the terminal according to the measurement report aiming at deactivating the automatic switching function.
Optionally, the measurement report condition for deactivating the automatic handover function is stricter or the same as a condition for not triggering the terminal automatic handover.
Optionally, the measurement event in the configuration of the measurement report condition for deactivating the automatic handover function is an a2-2 or an A3-2 event.
According to the base station of the embodiment of the invention, when the terminal is determined to support the automatic switching function and the measurement report which is sent by the terminal and aims at the automatic switching preparation is received, the automatic switching request is initiated to the target base station, so that the time for initiating the switching preparation is effectively determined, and the problem that the X2 signaling overhead is increased due to the fact that the source base station performs invalid switching preparation is avoided.
It should be noted that the base station of the embodiment of the present invention can implement the steps in the above-mentioned method embodiment applied to the base station, and can achieve the same technical effect.
Fifth embodiment
Referring to fig. 11, a method for automatically switching a terminal according to an embodiment of the present invention is applied to a terminal, and includes:
step 1101, receiving a measurement configuration message prepared for automatic switching sent by a base station; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
step 1102, according to the measurement configuration message for automatic handover preparation, when the measurement report condition for automatic handover preparation is satisfied, sending a measurement report for automatic handover preparation to the base station, so that the base station receives the measurement report for automatic handover preparation and sends an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function.
According to the method for automatically switching the terminal, the terminal carries out channel measurement according to the measurement configuration message prepared for automatic switching, and sends a measurement report to the source base station when the measurement meets the measurement report condition prepared for automatic switching, and the source base station initiates an automatic switching request to the target base station when determining that the terminal supports the automatic switching function and receives the measurement report prepared for automatic switching and sent by the terminal, so that the time for initiating the switching preparation is effectively determined, and the problem that the X2 signaling overhead is increased due to invalid switching preparation of the source base station is avoided.
Optionally, the method for automatically switching terminals according to the embodiment of the present invention further includes:
step 1103, acquiring the channel occupancy rate, and sending a request for activating the automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold value.
Here, the terminal determines whether to send a request for activating the automatic switching function according to the channel occupancy rate detected by the terminal, and if the currently detected channel occupancy rate or the average channel occupancy rate detected within a preset time exceeds a specified threshold, the terminal sends the request for activating the automatic switching function, because the higher the detected channel occupancy rate is, the less idle subframes available to the terminal is, and the larger the time delay for sending the measurement report is.
And 1104, activating an automatic switching function according to the indication of the base station.
Here, the source base station instructs the terminal to activate the automatic handover function when receiving an activate automatic handover function request transmitted by the terminal.
And the source base station can also determine whether to activate the automatic switching function of the terminal according to the channel occupancy rate when determining that the terminal supports the automatic switching function. If the currently detected channel occupancy rate or the average channel occupancy rate detected in the preset time exceeds a specified threshold (a first preset threshold), the terminal is instructed to activate the automatic switching function, because the higher the detected channel occupancy rate is, the less idle subframes available to the source base station is, and the larger the time delay for sending the switching command is.
Optionally, the method for automatically switching terminals according to the embodiment of the present invention further includes:
step 1105, receiving a measurement configuration message for activating an automatic switching function sent by the base station; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
step 1106, sending a measurement report for activating automatic switching to the base station when the measurement report condition for activating automatic switching function is met according to the measurement configuration message for activating automatic switching;
step 1107, activate the auto-switch function according to the indication of the base station.
Here, the source base station transmits to the terminal a measurement configuration message for activating the automatic handover function, which includes a measurement object configuration and a measurement report condition configuration. And the terminal performs channel measurement according to the measurement configuration message aiming at the activation of the automatic switching function, and sends a measurement report to the source base station when the measurement meets the measurement report condition aiming at the activation of the automatic switching function. And the source base station receives a measurement report aiming at activating the automatic switching function and instructs the terminal to activate the automatic switching function.
Optionally, the step of activating the automatic switching function according to the indication of the base station includes:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Optionally, the method for automatically switching terminals according to the embodiment of the present invention further includes:
step 1108, receiving a measurement configuration message for canceling automatic handover preparation sent by the base station; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
step 1109, according to the measurement configuration message for canceling automatic switching, sending the measurement report for canceling automatic switching to the base station when the measurement report condition for canceling automatic switching preparation is satisfied.
Here, the source base station transmits a measurement configuration message for canceling automatic handover preparation to the terminal, wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation. And the terminal performs channel measurement according to the measurement configuration message for canceling the automatic switching preparation, and sends a measurement report to the source base station when the measurement meets the measurement report condition for canceling the automatic switching preparation. And when receiving the measurement report for canceling the automatic switching preparation, the source base station sends an automatic switching cancellation request to the target base station for canceling the automatic switching preparation, wherein the automatic switching cancellation request can contain identification information of the terminal.
Optionally, the method for automatically switching terminals according to the embodiment of the present invention further includes:
step 1110, deactivating the automatic handover function according to the indication of the base station.
Optionally, before deactivating the automatic handover function according to the instruction of the base station, the method further includes:
step 1111, acquiring a channel occupancy rate, and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold.
Here, the terminal determines whether to send a request for deactivating the automatic switching function according to the channel occupancy rate detected by the terminal, and sends a request for deactivating the automatic switching function if the currently detected channel occupancy rate or the average channel occupancy rate detected within a preset time is less than a specified threshold.
And the source base station can also determine whether to deactivate the automatic switching function of the terminal according to the channel occupancy rate. And if the currently detected channel occupancy rate or the average channel occupancy rate detected in the preset time is less than a specified threshold value, indicating the terminal to deactivate the automatic switching function.
Optionally, before deactivating the automatic handover function according to the instruction of the base station, the method further includes:
step 1112, receiving a measurement configuration message for deactivating an automatic handover function, which is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
step 1113, according to the measurement configuration message for deactivating the automatic switching function, when the measurement report condition for deactivating the automatic switching function is satisfied, sending a measurement report for deactivating the automatic switching function to the base station.
Here, the source base station transmits a measurement configuration message for deactivating the automatic handover function, which includes a measurement object configuration and a measurement report condition configuration, to the terminal. And the terminal performs channel measurement according to the measurement configuration message for deactivating the automatic switching function, and sends a measurement report to the source base station when the measurement meets the measurement report condition for deactivating the automatic switching function. And the source base station receives the measurement report aiming at the deactivation of the automatic switching function and instructs the terminal to deactivate the automatic switching function.
According to the method for automatically switching the terminal, the terminal carries out channel measurement according to the measurement configuration message prepared for automatic switching, and sends a measurement report to the source base station when the measurement meets the measurement report condition prepared for automatic switching, and the source base station initiates an automatic switching request to the target base station when determining that the terminal supports the automatic switching function and receives the measurement report prepared for automatic switching and sent by the terminal, so that the time for initiating the switching preparation is effectively determined, and the problem that the X2 signaling overhead is increased due to invalid switching preparation of the source base station is avoided.
Sixth embodiment
Referring to fig. 12, a terminal according to an embodiment of the present invention includes:
a first receiving module 1201, configured to receive a measurement configuration message sent by a base station for automatic handover preparation; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
a fourth sending module 1202, configured to send, according to the measurement configuration message for automatic handover preparation, a measurement report for automatic handover preparation to the base station when the measurement report condition for automatic handover preparation is met, so that the base station receives the measurement report for automatic handover preparation and sends, when it is determined that the terminal supports an automatic handover function, an automatic handover request to a target base station that needs automatic handover preparation.
The terminal of the embodiment of the invention carries out channel measurement according to the measurement configuration message aiming at the automatic switching preparation, sends the measurement report to the source base station when the measurement meets the measurement report condition aiming at the automatic switching preparation, and the source base station initiates the automatic switching request to the target base station when determining that the terminal supports the automatic switching function and receiving the measurement report aiming at the automatic switching preparation sent by the terminal, thereby effectively determining the time for initiating the switching preparation and avoiding the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station.
Optionally, the terminal of the embodiment of the present invention further includes:
a fifth sending module, configured to obtain a channel occupancy rate, and send a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold;
and the third activation module is used for activating the automatic switching function according to the indication of the base station.
Optionally, the terminal of the embodiment of the present invention further includes:
a second receiving module, configured to receive a measurement configuration message for activating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
a sixth sending module, configured to send, according to the measurement configuration message for activating automatic handover, a measurement report for activating automatic handover to the base station when the measurement report condition for activating automatic handover is satisfied;
and the fourth activation module is used for activating the automatic switching function according to the indication of the base station.
Optionally, the third activation module or the fourth activation module is configured to:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
Optionally, the terminal of the embodiment of the present invention further includes:
a third receiving module, configured to receive a measurement configuration message sent by the base station for canceling automatic handover preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
a seventh sending module, configured to send, according to the measurement configuration message for canceling automatic handover, a measurement report for canceling automatic handover to the base station when the measurement report condition for canceling automatic handover preparation is satisfied.
Optionally, the terminal of the embodiment of the present invention further includes:
and the third deactivation module is used for deactivating the automatic switching function according to the indication of the base station.
Optionally, the terminal of the embodiment of the present invention further includes:
and the eighth sending module is used for acquiring the channel occupancy rate and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
Optionally, the terminal of the embodiment of the present invention further includes:
a fourth receiving module, configured to receive a measurement configuration message for deactivating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
a ninth sending module, configured to send, according to the measurement configuration message for deactivating an automatic handover function, a measurement report for deactivating the automatic handover function to the base station when the measurement report condition for deactivating the automatic handover function is satisfied.
The terminal of the embodiment of the invention carries out channel measurement according to the measurement configuration message aiming at the automatic switching preparation, sends the measurement report to the source base station when the measurement meets the measurement report condition aiming at the automatic switching preparation, and the source base station initiates the automatic switching request to the target base station when determining that the terminal supports the automatic switching function and receiving the measurement report aiming at the automatic switching preparation sent by the terminal, thereby effectively determining the time for initiating the switching preparation and avoiding the problem of increasing X2 signaling overhead caused by invalid switching preparation of the source base station.
It should be noted that the terminal according to the embodiment of the present invention can implement the steps in the above-mentioned method embodiment applied to the terminal, and can achieve the same technical effect.
Seventh embodiment
Referring to fig. 13, an embodiment of the present invention provides a base station, including:
a processor 1301, configured to send a measurement configuration message for automatic handover preparation to a terminal, and detect an acquired measurement report for automatic handover preparation sent by the terminal;
a transmitter 1302, configured to send an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function according to the measurement report for automatic handover preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
The processor 1301 may also be configured to implement the functions implemented by all the modules in the foregoing base station embodiment, and may also achieve the same technical effects as those achieved by the foregoing base station embodiment.
Eighth embodiment
Referring to fig. 14, a terminal according to an embodiment of the present invention includes:
a receiver 1401 for receiving a measurement configuration message prepared for automatic handover, which is transmitted by a base station; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
a transmitter 1402, configured to send, according to the measurement configuration message for automatic handover preparation, a measurement report for automatic handover preparation to the base station when the measurement report condition for automatic handover preparation is satisfied, so that the base station receives the measurement report for automatic handover preparation and sends, when it is determined that the terminal supports an automatic handover function, an automatic handover request to a target base station that needs automatic handover preparation.
The terminal of the embodiment of the present invention further includes a processor, and the processor may be further configured to implement the functions implemented by all the modules in the terminal embodiment, and may also achieve the same technical effects as those achieved by the terminal embodiment.
The terminal described in the embodiments of the present invention may be a mobile phone (or a mobile phone), or other devices capable of sending or receiving wireless signals, including a user equipment (terminal), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a CPE or Mifi capable of converting a mobile signal into a wifi signal, an intelligent appliance, or other devices capable of autonomously communicating with a mobile communication network without human operation, and the like.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
A1. A method for automatically switching a terminal is applied to a base station and is characterized by comprising the following steps:
sending a measurement configuration message for automatic switching preparation to a terminal, and detecting an obtained measurement report for the automatic switching preparation sent by the terminal;
when the terminal is determined to support the automatic switching function according to the measurement report aiming at the automatic switching preparation, sending an automatic switching request to a target base station needing the automatic switching preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
A2. The method of claim a1, wherein the step of sending an automatic handover request to a target base station requiring automatic handover preparation comprises:
selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
A3. The method of claim a1, wherein the step of sending an automatic handover request to a target base station requiring automatic handover preparation comprises:
and selecting the target base station needing automatic handover preparation according to the cell meeting the measurement report condition of the automatic handover preparation and indicated in the measurement report of the automatic handover preparation, and sending an automatic handover request to the target base station needing automatic handover preparation.
A4. The method according to claim a3, wherein the step of selecting the target base station requiring automatic handover preparation according to the cell satisfying the measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation comprises:
selecting the base station to which the cell meeting the measurement report condition of the automatic handover preparation indicated in the measurement report of the automatic handover preparation belongs as the target base station requiring the automatic handover preparation; and/or
Selecting a base station to which a neighbor cell of a cell satisfying the measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation belongs as the target base station requiring automatic handover preparation.
A5. The method of claim a1, wherein before sending the automatic handover request to the target base station requiring automatic handover preparation, the method further comprises:
sending a target cell list with terminal context information to the terminal; or
After sending an automatic handover request to a target base station requiring automatic handover preparation, the method further comprises:
and sending the target cell list with the terminal context information to the terminal.
A6. The method according to claim a1, wherein the measurement report conditions prepared for automatic handover are either looser or the same as the conditions triggering terminal automatic handover.
A7. The method of claim a6, wherein the measurement event in the configuration of measurement report conditions prepared for automatic handover is one of an a2-1, A3-1, a4 and a5 event.
A8. The method of claim a1, further comprising:
activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or
When the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or
And when determining that the terminal supports the automatic switching function and receiving a request for activating the automatic switching function, activating the automatic switching function of the terminal.
A9. The method of claim a1, further comprising:
when the terminal is determined to support the automatic switching function, sending a measurement configuration message aiming at activating the automatic switching function to the terminal, and detecting an obtained measurement report aiming at activating the automatic switching function, which is sent by the terminal; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
A10. The method according to claim a9, wherein the measurement report condition for activating automatic switching function is more relaxed or the same than the condition for triggering terminal automatic switching;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
A11. The method according to claim a10, wherein the measurement event in the configuration of measurement report conditions for activating auto-switching function is one of a2-1, A3-1, a4 and a5 events.
A12. The method according to any of claims A8-a 11, wherein the step of activating an automatic switching function of the terminal comprises:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
A13. The method of claim a1, further comprising:
acquiring User Equipment (UE) capability information of the terminal;
and determining whether the terminal supports an automatic switching function or not according to the UE capability information of the terminal.
A14. The method of claim a1, wherein after sending the automatic handover request to the target base station requiring automatic handover preparation, the method further comprises:
sending a measurement configuration message for canceling automatic switching preparation to the terminal, and detecting an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and sending an automatic switching cancellation request to a target base station which cancels the automatic switching preparation according to the measurement report aiming at the automatic switching cancellation preparation.
A15. The method of claim a14, wherein the step of sending a cancel automatic handover request to a target base station that cancels preparation for automatic handover comprises:
selecting a target base station for canceling automatic handover preparation according to the cell which meets the measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and sending a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
A16. The method according to claim a15, wherein the step of selecting the target base station for cancellation of automatic handover preparation according to the cell satisfying the measurement reporting condition for cancellation of automatic handover preparation indicated in the measurement report for cancellation of automatic handover preparation comprises:
selecting a base station, as a target base station for canceling automatic handover preparation, of which at least one cell satisfies the measurement report condition for canceling automatic handover preparation according to cells satisfying the measurement report condition for canceling automatic handover preparation indicated in the measurement report for canceling automatic handover preparation; or
And selecting a base station, as the target base station for canceling the automatic handover preparation, of which all cells meet the measurement report condition for canceling the automatic handover preparation according to the cells meeting the measurement report condition for canceling the automatic handover preparation indicated in the measurement report for canceling the automatic handover.
A17. The method according to claim a14, wherein the measurement report conditions for cancelling automatic handover preparation are stricter or the same as the conditions that do not trigger terminal automatic handover.
A18. The method according to claim a17, wherein the measurement event in the configuration of measurement report conditions for cancellation of automatic handover preparation is an a2-2 or A3-2 event.
A19. The method according to claim A8 or a9, further comprising, after activating the auto-switching function of the terminal:
acquiring the channel occupancy rate, and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or
And when receiving a request for deactivating the automatic switching function, which is sent by the terminal, deactivating the automatic switching function of the terminal.
A20. The method according to claim a19, wherein the occupancy is the number of detected cells of other base stations than the base station; or
The channel occupancy rate is the ratio of the number of times of detecting channel occupancy before sending data in a first preset time to the total number of times of detecting channel occupancy; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
A21. The method according to claim A8 or a9, further comprising, after activating the auto-switching function of the terminal:
sending a measurement configuration message aiming at the deactivation of the automatic switching function to the terminal, and detecting an obtained measurement report aiming at the deactivation of the automatic switching function sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement report aiming at the deactivation of the automatic switching function, deactivating the automatic switching function of the terminal.
A22. The method according to claim a21, wherein the measurement report condition for deactivating automatic handover function is stricter or the same as the condition for not triggering terminal automatic handover.
A23. The method according to claim a22, wherein the measurement event in the configuration of measurement report conditions for deactivating an automatic handover function is an a2-2 or A3-2 event.
B24. A base station, comprising:
the system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for sending a measurement configuration message aiming at automatic switching preparation to a terminal and detecting an acquired measurement report aiming at the automatic switching preparation sent by the terminal;
a first sending module, configured to send an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function according to the measurement report for the automatic handover preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover.
B25. The base station of claim B24, wherein the first sending module comprises:
the selection submodule is used for selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
the first sending submodule is used for sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
B26. The base station of claim B24, wherein the first sending module comprises:
and a second sending submodule, configured to select the target base station requiring automatic handover preparation according to the cell that satisfies the measurement report condition of the automatic handover preparation and is indicated in the measurement report of the automatic handover preparation, and send an automatic handover request to the target base station requiring automatic handover preparation.
B27. The base station of claim B26, wherein the second transmission submodule comprises:
a first selection unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a cell indicated in the measurement report for automatic handover preparation satisfies a measurement report condition for automatic handover preparation belongs; and/or
A second selecting unit, configured to select, as the target base station requiring automatic handover preparation, a base station to which a neighboring cell of a cell that satisfies a measurement report condition for automatic handover preparation indicated in the measurement report for automatic handover preparation belongs.
B28. The base station of claim B24, further comprising:
a second sending module, configured to send a target cell list with terminal context information to the terminal before sending an automatic handover request to a target base station that needs automatic handover preparation; or after sending an automatic handover request to a target base station needing automatic handover preparation, sending a target cell list with terminal context information to the terminal.
B29. The base station of claim B24, wherein the measurement report condition prepared for automatic handover is more relaxed or the same as the condition for triggering terminal automatic handover.
B30. The base station of claim B29, wherein the measurement event in the configuration of measurement report conditions prepared for automatic handover is one of an a2-1, A3-1, a4 and a5 event.
B31. The base station of claim B24, further comprising:
the first activation module is used for activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or when the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or when the terminal is determined to support the automatic switching function and an automatic switching function activating request sent by the terminal is received, activating the automatic switching function of the terminal.
B32. The base station of claim B24, further comprising:
the second detection module is used for sending a measurement configuration message aiming at activating the automatic switching function to the terminal and detecting an acquired measurement report aiming at activating the automatic switching function and sent by the terminal when the terminal is determined to support the automatic switching function; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and the second activation module is used for activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
B33. The base station of claim B32, wherein the measurement report condition for activating the automatic handover function is more relaxed or the same as the condition for triggering the terminal automatic handover;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
B34. The base station of claim B33, wherein the measurement event in the configuration of measurement report conditions for activating automatic handover function is one of an a2-1, A3-1, a4 and a5 event.
B35. The base station of any one of claims B32-B34, wherein the second activation module is configured to:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
B36. The base station of claim B27, further comprising:
an obtaining module, configured to obtain user equipment UE capability information of the terminal;
and the determining module is used for determining whether the terminal supports the automatic switching function or not according to the UE capability information of the terminal.
B37. The base station of claim B24, further comprising:
a third detection module, configured to send a measurement configuration message for canceling automatic switching preparation to the terminal, and detect an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and a third sending module, configured to send an automatic handover cancellation request to the target base station that cancels the automatic handover preparation according to the measurement report for canceling the automatic handover preparation.
B38. The base station of claim B37, wherein the third sending module comprises:
and a third sending submodule, configured to select a target base station for canceling automatic handover preparation according to a cell that satisfies a measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and send a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
B39. The base station of claim B38, wherein the third transmission submodule comprises:
a third selecting unit, configured to select, as a target base station for canceling automatic handover preparation, a base station in which at least one cell included in the cell satisfies a measurement report condition for canceling automatic handover preparation, according to a cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover preparation; or
A fourth selecting unit, configured to select, as the target base station for canceling automatic handover preparation, a base station in which all cells included in the cell satisfy the measurement report condition for canceling automatic handover preparation, according to the cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover.
B40. The base station according to claim B37, wherein the measurement report condition for cancelling automatic handover preparation is stricter or the same as the condition that does not trigger terminal automatic handover.
B41. The base station of claim B40, wherein the measurement event in the configuration of measurement report conditions for cancellation of preparation for automatic handover is an a2-2 or A3-2 event.
B42. The base station of claim B31 or B32, further comprising:
the first deactivation module is used for acquiring the channel occupancy rate and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or when receiving a request for deactivating the automatic switching function sent by the terminal, deactivating the automatic switching function of the terminal.
B43. The base station of claim B42, wherein the occupancy is the number of detected cells of other base stations except the base station; or
The channel occupancy rate is the ratio of the number of times that a channel is detected to be occupied before data is sent within a first preset time to the total number of times that the channel is detected to be occupied; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
B44. The base station of claim B31 or B32, further comprising:
a fourth detection module, configured to send a measurement configuration message for deactivating an automatic switching function to the terminal, and detect an acquired measurement report for deactivating the automatic switching function, where the measurement configuration message is sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and the second deactivation module is used for deactivating the automatic switching function of the terminal according to the measurement report aiming at deactivating the automatic switching function.
B45. The base station according to claim B44, wherein the measurement report condition for deactivating automatic handover function is stricter or the same as the condition for not triggering terminal automatic handover.
B46. The base station of claim B45, wherein the measurement event in the configuration of measurement report conditions for deactivating the automatic handover function is an a2-2 or A3-2 event.
C47. A method for automatically switching a terminal is applied to the terminal and is characterized by comprising the following steps:
receiving a measurement configuration message which is sent by a base station and prepared for automatic switching; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
according to the measurement configuration message prepared for automatic switching, when the measurement report condition prepared for automatic switching is met, a measurement report prepared for automatic switching is sent to the base station, so that the base station receives the measurement report prepared for automatic switching and sends an automatic switching request to a target base station needing automatic switching preparation when the terminal is determined to support an automatic switching function.
C48. The method of claim C47, further comprising:
acquiring the channel occupancy rate, and sending a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold value;
and activating an automatic switching function according to the indication of the base station.
C49. The method of claim C47, further comprising:
receiving a measurement configuration message which is sent by the base station and aims at activating an automatic switching function; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
according to the measurement configuration message for activating automatic switching, sending a measurement report for activating automatic switching to the base station when the measurement report condition for activating automatic switching is met;
and activating an automatic switching function according to the indication of the base station.
C50. The method of claim C48 or C49, wherein the step of activating an auto-switching function according to the indication of the base station comprises:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
C51. The method of claim C47, further comprising:
receiving a measurement configuration message sent by the base station for canceling automatic switching preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
and according to the measurement configuration message for canceling the automatic switching, sending a measurement report for canceling the automatic switching to the base station when the measurement report condition for canceling the automatic switching preparation is met.
C52. The method of claim C48 or C49, further comprising:
and deactivating the automatic switching function according to the indication of the base station.
C53. The method of claim C52, wherein prior to deactivating the automatic handover function according to the indication from the base station, further comprising:
and acquiring the channel occupancy rate, and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
C54. The method of claim C52, wherein prior to deactivating the automatic handover function according to the indication from the base station, further comprising:
receiving a measurement configuration message for deactivating an automatic switching function, which is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement configuration message for deactivating the automatic switching function, sending a measurement report for deactivating the automatic switching function to the base station when the measurement report condition for deactivating the automatic switching function is met.
D55. A terminal, comprising:
a first receiving module, configured to receive a measurement configuration message sent by a base station for automatic handover preparation; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
a fourth sending module, configured to send, according to the measurement configuration message for automatic handover preparation, a measurement report for automatic handover preparation to the base station when the measurement report condition for automatic handover preparation is satisfied, so that the base station receives the measurement report for automatic handover preparation and sends, when it is determined that the terminal supports an automatic handover function, an automatic handover request to a target base station that needs automatic handover preparation.
D56. The terminal of claim D55, further comprising:
a fifth sending module, configured to obtain a channel occupancy rate, and send a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold;
and the third activation module is used for activating the automatic switching function according to the indication of the base station.
D57. The terminal of claim D55, further comprising:
a second receiving module, configured to receive a measurement configuration message for activating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
a sixth sending module, configured to send, according to the measurement configuration message for activating automatic handover, a measurement report for activating automatic handover to the base station when the measurement report condition for activating automatic handover is satisfied;
and the fourth activation module is used for activating the automatic switching function according to the indication of the base station.
D58. The terminal of claim D56, wherein the third activation module is configured to:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
D59. The terminal of claim D55, further comprising:
a third receiving module, configured to receive a measurement configuration message sent by the base station for canceling automatic handover preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
a seventh sending module, configured to send, according to the measurement configuration message for canceling automatic handover, a measurement report for canceling automatic handover to the base station when the measurement report condition for canceling automatic handover preparation is satisfied.
D60. The terminal of claim D56 or D57, further comprising:
and the third deactivation module is used for deactivating the automatic switching function according to the indication of the base station.
D61. The terminal of claim D60, further comprising:
and the eighth sending module is used for acquiring the channel occupancy rate and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
D62. The terminal of claim D60, further comprising:
a fourth receiving module, configured to receive a measurement configuration message for deactivating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
a ninth sending module, configured to send, according to the measurement configuration message for deactivating an automatic handover function, a measurement report for deactivating the automatic handover function to the base station when the measurement report condition for deactivating the automatic handover function is satisfied.

Claims (54)

1. A method for automatically switching a terminal is applied to a base station and is characterized by comprising the following steps:
sending a measurement configuration message for automatic switching preparation to a terminal, and detecting an obtained measurement report for the automatic switching preparation sent by the terminal;
when the terminal is determined to support the automatic switching function according to the measurement report aiming at the automatic switching preparation, sending an automatic switching request to a target base station needing the automatic switching preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
the measurement report condition prepared for automatic switching is more relaxed than the condition for triggering terminal automatic switching;
the condition lenient indicates that a condition for the terminal to transmit a measurement report prepared for automatic handover should be satisfied before compared with a condition for triggering automatic handover of the terminal;
the step of sending an automatic handover request to a target base station requiring automatic handover preparation includes:
selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
2. The method of claim 1, wherein before sending the automatic handover request to the target base station requiring automatic handover preparation, further comprising:
sending a target cell list with terminal context information to the terminal; or
After sending an automatic handover request to a target base station requiring automatic handover preparation, the method further comprises:
and sending the target cell list with the terminal context information to the terminal.
3. The method of claim 1, wherein the measurement event in the configuration of measurement report conditions prepared for automatic handover is one of an a2-1, A3-1, a4, and a5 event.
4. The method of claim 1, further comprising:
activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or
When the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or
And when determining that the terminal supports the automatic switching function and receiving a request for activating the automatic switching function, activating the automatic switching function of the terminal.
5. The method of claim 1, further comprising:
when the terminal is determined to support the automatic switching function, sending a measurement configuration message aiming at activating the automatic switching function to the terminal, and detecting an obtained measurement report aiming at activating the automatic switching function, which is sent by the terminal; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
6. The method of claim 5, wherein the measurement report condition for activating the automatic handover function is more relaxed or the same than the condition for triggering the terminal automatic handover;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
7. The method of claim 6, wherein the measurement event in the configuration of measurement report conditions for activating an automatic switching function is one of an A2-1, A3-1, A4 and A5 event.
8. The method according to any of claims 4 to 7, wherein the step of activating the auto-switching function of the terminal comprises:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
9. The method of claim 1, further comprising:
acquiring User Equipment (UE) capability information of the terminal;
and determining whether the terminal supports an automatic switching function or not according to the UE capability information of the terminal.
10. The method of claim 1, wherein after sending an automatic handover request to a target base station requiring automatic handover preparation, further comprising:
sending a measurement configuration message for canceling automatic switching preparation to the terminal, and detecting an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and sending an automatic switching cancellation request to a target base station which cancels the automatic switching preparation according to the measurement report aiming at the automatic switching cancellation preparation.
11. The method of claim 10, wherein the step of sending a cancel automatic handover request to a target base station that cancels preparation for automatic handover comprises:
selecting a target base station for canceling automatic handover preparation according to the cell which meets the measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and sending a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
12. The method of claim 11, wherein the step of selecting the target base station for cancellation of automatic handover preparation according to the cell indicated in the measurement report for cancellation of automatic handover preparation that satisfies the measurement report condition for cancellation of automatic handover preparation comprises:
selecting a base station, as a target base station for canceling automatic handover preparation, of which at least one cell satisfies the measurement report condition for canceling automatic handover preparation according to cells satisfying the measurement report condition for canceling automatic handover preparation indicated in the measurement report for canceling automatic handover preparation; or
And selecting a base station, as the target base station for canceling the automatic handover preparation, of which all cells meet the measurement report condition for canceling the automatic handover preparation according to the cells meeting the measurement report condition for canceling the automatic handover preparation indicated in the measurement report for canceling the automatic handover.
13. The method according to claim 10, wherein the measurement report condition for cancelling automatic handover preparation is stricter or the same as a condition that does not trigger terminal automatic handover.
14. The method of claim 13, wherein the measurement event in the configuration of measurement report conditions for cancellation of automatic handover preparation is an a2-2 or A3-2 event.
15. The method according to claim 4 or 5, wherein after activating the automatic switching function of the terminal, further comprising:
acquiring the channel occupancy rate, and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or
And when receiving a request for deactivating the automatic switching function, which is sent by the terminal, deactivating the automatic switching function of the terminal.
16. The method of claim 15, wherein the occupancy is a number of detected cells of the base station other than the base station; or
The channel occupancy rate is the ratio of the number of times of detecting channel occupancy before sending data in a first preset time to the total number of times of detecting channel occupancy; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
17. The method according to claim 4 or 5, wherein after activating the automatic switching function of the terminal, further comprising:
sending a measurement configuration message aiming at the deactivation of the automatic switching function to the terminal, and detecting an obtained measurement report aiming at the deactivation of the automatic switching function sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement report aiming at the deactivation of the automatic switching function, deactivating the automatic switching function of the terminal.
18. The method according to claim 17, wherein the measurement report condition for deactivating the automatic handover function is stricter or the same as a condition for not triggering the terminal automatic handover.
19. The method of claim 18, wherein the measurement event in the configuration of measurement reporting conditions for deactivating an automatic handover function is an a2-2 or A3-2 event.
20. A base station, comprising:
the system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for sending a measurement configuration message aiming at automatic switching preparation to a terminal and detecting an acquired measurement report aiming at the automatic switching preparation sent by the terminal;
a first sending module, configured to send an automatic handover request to a target base station that needs automatic handover preparation when it is determined that the terminal supports an automatic handover function according to the measurement report for the automatic handover preparation; wherein the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
the measurement report condition prepared for automatic switching is more relaxed than the condition for triggering terminal automatic switching;
the condition lenient indicates that a condition for the terminal to transmit a measurement report prepared for automatic handover should be satisfied before compared with a condition for triggering automatic handover of the terminal;
the first transmitting module includes:
the selection submodule is used for selecting a base station supporting an automatic switching function as the target base station needing automatic switching preparation;
the first sending submodule is used for sending an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request includes the context information of the terminal.
21. The base station of claim 20, further comprising:
a second sending module, configured to send a target cell list with terminal context information to the terminal before sending an automatic handover request to a target base station that needs automatic handover preparation; or after sending an automatic handover request to a target base station needing automatic handover preparation, sending a target cell list with terminal context information to the terminal.
22. The base station of claim 20, wherein the measurement event in the configuration of measurement report conditions prepared for automatic handover is one of an a2-1, A3-1, a4 and a5 event.
23. The base station of claim 20, further comprising:
the first activation module is used for activating the automatic switching function of the terminal when the terminal is determined to support the automatic switching function; or when the terminal is determined to support the automatic switching function, acquiring the channel occupancy rate, and activating the automatic switching function of the terminal when the channel occupancy rate is greater than a first preset threshold value; or when the terminal is determined to support the automatic switching function and an automatic switching function activating request sent by the terminal is received, activating the automatic switching function of the terminal.
24. The base station of claim 20, further comprising:
the second detection module is used for sending a measurement configuration message aiming at activating the automatic switching function to the terminal and detecting an acquired measurement report aiming at activating the automatic switching function and sent by the terminal when the terminal is determined to support the automatic switching function; wherein the measurement configuration message for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
and the second activation module is used for activating the automatic switching function of the terminal according to the measurement report aiming at activating the automatic switching function.
25. The base station of claim 24, wherein the measurement report condition for activating the automatic handover function is more relaxed or the same as the condition for triggering the terminal automatic handover;
the measurement reporting condition prepared for automatic handover is stricter or the same as the measurement reporting condition for activating the automatic handover function.
26. The base station of claim 25, wherein the measurement event in the configuration of measurement report conditions for activating automatic handover function is one of a2-1, A3-1, a4 and a5 events.
27. The base station according to any of claims 24 to 26, wherein the second activation module is configured to:
instructing the terminal to activate an automatic handover function by sending a target cell list to the terminal, wherein the target cell list comprises a target cell list supporting the automatic handover function and/or a target cell list with terminal context information; or
And indicating the terminal to activate an automatic switching function by sending automatic switching timer configuration to the terminal, wherein the automatic switching timer configuration is used for determining the time length of an automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
28. The base station of claim 20, further comprising:
an obtaining module, configured to obtain user equipment UE capability information of the terminal;
and the determining module is used for determining whether the terminal supports the automatic switching function or not according to the UE capability information of the terminal.
29. The base station of claim 20, further comprising:
a third detection module, configured to send a measurement configuration message for canceling automatic switching preparation to the terminal, and detect an acquired measurement report for canceling automatic switching preparation sent by the terminal; wherein the measurement configuration message for canceling automatic handover preparation includes a measurement object configuration and a measurement report condition configuration for canceling automatic handover preparation;
and a third sending module, configured to send an automatic handover cancellation request to the target base station that cancels the automatic handover preparation according to the measurement report for canceling the automatic handover preparation.
30. The base station of claim 29, wherein the third sending module comprises:
and a third sending submodule, configured to select a target base station for canceling automatic handover preparation according to a cell that satisfies a measurement report condition for canceling automatic handover preparation and is indicated in the measurement report for canceling automatic handover preparation, and send a context information request for releasing the terminal to the target base station for canceling automatic handover preparation.
31. The base station of claim 30, wherein the third transmission submodule comprises:
a third selecting unit, configured to select, as a target base station for canceling automatic handover preparation, a base station in which at least one cell included in the cell satisfies a measurement report condition for canceling automatic handover preparation, according to a cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover preparation; or
A fourth selecting unit, configured to select, as the target base station for canceling automatic handover preparation, a base station in which all cells included in the cell satisfy the measurement report condition for canceling automatic handover preparation, according to the cell that satisfies the measurement report condition for canceling automatic handover preparation, which is indicated in the measurement report for canceling automatic handover.
32. The base station of claim 29, wherein the measurement report condition for cancelling automatic handover preparation is stricter or the same as a condition that does not trigger terminal automatic handover.
33. The base station of claim 32, wherein the measurement event in the configuration of measurement report conditions for cancellation of automatic handover preparation is an a2-2 or an A3-2 event.
34. The base station according to claim 23 or 24, further comprising:
the first deactivation module is used for acquiring the channel occupancy rate and deactivating the automatic switching function of the terminal when the channel occupancy rate is smaller than a second preset threshold value; or when receiving a request for deactivating the automatic switching function sent by the terminal, deactivating the automatic switching function of the terminal.
35. The base station of claim 34, wherein the occupancy is a number of detected cells of other base stations except the base station; or
The channel occupancy rate is the ratio of the number of times that a channel is detected to be occupied before data is sent within a first preset time to the total number of times that the channel is detected to be occupied; or
The channel occupancy rate is the ratio of the times of detecting that the channel is occupied to the total times of detecting the channel occupancy when the channel occupancy is periodically detected within second preset time; or
The occupancy rate is a ratio of a time at which the detected average received signal strength RSS exceeds a third preset threshold within a third preset time to the third preset time.
36. The base station according to claim 23 or 24, further comprising:
a fourth detection module, configured to send a measurement configuration message for deactivating an automatic switching function to the terminal, and detect an acquired measurement report for deactivating the automatic switching function, where the measurement configuration message is sent by the terminal; wherein the measurement configuration message for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and the second deactivation module is used for deactivating the automatic switching function of the terminal according to the measurement report aiming at deactivating the automatic switching function.
37. The base station of claim 36, wherein the measurement report condition for deactivating the automatic handover function is stricter or the same as a condition for not triggering terminal automatic handover.
38. The base station of claim 37, wherein the measurement event in the configuration of measurement report conditions for deactivating the automatic handover function is an a2-2 or A3-2 event.
39. A method for automatically switching a terminal is applied to the terminal and is characterized by comprising the following steps:
receiving a measurement configuration message which is sent by a base station and prepared for automatic switching; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
according to the measurement configuration message prepared for automatic switching, when the measurement report condition prepared for automatic switching is met, sending a measurement report prepared for automatic switching to the base station, so that the base station receives the measurement report prepared for automatic switching and sends an automatic switching request to a target base station needing automatic switching preparation when the terminal is determined to support an automatic switching function;
the step that the base station sends the automatic switching request to the target base station needing automatic switching preparation comprises the following steps: the base station selects a base station supporting an automatic switching function as the target base station needing automatic switching preparation; the base station sends an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request comprises the context information of the terminal;
the measurement report condition prepared for automatic switching is more relaxed than the condition for triggering terminal automatic switching;
the condition lenient indicates that the condition for the terminal to transmit a measurement report prepared for automatic handover should be satisfied before compared to the condition for triggering automatic handover of the terminal.
40. The method of claim 39, further comprising:
acquiring the channel occupancy rate, and sending a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold value;
and activating an automatic switching function according to the indication of the base station.
41. The method of claim 39, further comprising:
receiving a measurement configuration message which is sent by the base station and aims at activating an automatic switching function; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
according to the measurement configuration message for activating automatic switching, sending a measurement report for activating automatic switching to the base station when the measurement report condition for activating automatic switching is met;
and activating an automatic switching function according to the indication of the base station.
42. The method according to claim 40 or 41, wherein the step of activating the automatic switching function according to the indication of the base station comprises:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
43. The method of claim 39, further comprising:
receiving a measurement configuration message sent by the base station for canceling automatic switching preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
and according to the measurement configuration message for canceling the automatic switching, sending a measurement report for canceling the automatic switching to the base station when the measurement report condition for canceling the automatic switching preparation is met.
44. The method of claim 40 or 41, further comprising:
and deactivating the automatic switching function according to the indication of the base station.
45. The method of claim 44, prior to deactivating the automatic handover function according to the indication of the base station, further comprising:
and acquiring the channel occupancy rate, and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
46. The method of claim 44, prior to deactivating the automatic handover function according to the indication of the base station, further comprising:
receiving a measurement configuration message for deactivating an automatic switching function, which is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
and according to the measurement configuration message for deactivating the automatic switching function, sending a measurement report for deactivating the automatic switching function to the base station when the measurement report condition for deactivating the automatic switching function is met.
47. A terminal, comprising:
a first receiving module, configured to receive a measurement configuration message sent by a base station for automatic handover preparation; the measurement configuration message prepared for automatic handover includes a measurement object configuration and a measurement report condition configuration prepared for automatic handover;
a fourth sending module, configured to send, according to the measurement configuration message for automatic handover preparation, a measurement report for automatic handover preparation to the base station when the measurement report condition for automatic handover preparation is met, so that the base station receives the measurement report for automatic handover preparation and sends, when it is determined that the terminal supports an automatic handover function, an automatic handover request to a target base station that needs automatic handover preparation;
the step that the base station sends the automatic switching request to the target base station needing automatic switching preparation comprises the following steps: the base station selects a base station supporting an automatic switching function as the target base station needing automatic switching preparation; the base station sends an automatic switching request to the target base station needing automatic switching preparation; wherein, the automatic switching request comprises the context information of the terminal;
the measurement report condition prepared for automatic switching is more relaxed than the condition for triggering terminal automatic switching;
the condition lenient indicates that the condition for the terminal to transmit a measurement report prepared for automatic handover should be satisfied before compared to the condition for triggering automatic handover of the terminal.
48. The terminal of claim 47, further comprising:
a fifth sending module, configured to obtain a channel occupancy rate, and send a request for activating an automatic switching function to the base station when the channel occupancy rate is greater than a first preset threshold;
and the third activation module is used for activating the automatic switching function according to the indication of the base station.
49. The terminal of claim 47, further comprising:
a second receiving module, configured to receive a measurement configuration message for activating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for activating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for activating the automatic switching function;
a sixth sending module, configured to send, according to the measurement configuration message for activating automatic handover, a measurement report for activating automatic handover to the base station when the measurement report condition for activating automatic handover is satisfied;
and the fourth activation module is used for activating the automatic switching function according to the indication of the base station.
50. The terminal of claim 48, wherein the third activation module is configured to:
activating an automatic switching function when receiving an automatic switching target cell list sent by the base station, wherein the target cell list comprises a target cell list supporting the automatic switching function and/or a target cell list with terminal context information; or
And activating an automatic switching function when receiving an automatic switching timer configuration sent by the base station, wherein the automatic switching timer configuration is used for determining the time length of the automatic switching timer according to the automatic switching timer configuration and starting automatic switching after the automatic switching timer is overtime.
51. The terminal of claim 47, further comprising:
a third receiving module, configured to receive a measurement configuration message sent by the base station for canceling automatic handover preparation; wherein the measurement configuration prepared for canceling automatic switching includes a measurement object configuration and a measurement report condition configuration prepared for canceling automatic switching;
a seventh sending module, configured to send, according to the measurement configuration message for canceling automatic handover, a measurement report for canceling automatic handover to the base station when the measurement report condition for canceling automatic handover preparation is satisfied.
52. The terminal of claim 48 or 49, further comprising:
and the third deactivation module is used for deactivating the automatic switching function according to the indication of the base station.
53. The terminal of claim 52, further comprising:
and the eighth sending module is used for acquiring the channel occupancy rate and sending a request for deactivating the automatic switching function to the base station when the channel occupancy rate is smaller than a second preset threshold value.
54. The terminal of claim 52, further comprising:
a fourth receiving module, configured to receive a measurement configuration message for deactivating an automatic handover function, where the measurement configuration message is sent by the base station; wherein the measurement configuration for deactivating the automatic switching function includes a measurement object configuration and a measurement report condition configuration for deactivating the automatic switching function;
a ninth sending module, configured to send, according to the measurement configuration message for deactivating an automatic handover function, a measurement report for deactivating the automatic handover function to the base station when the measurement report condition for deactivating the automatic handover function is satisfied.
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