CN107454634A - A kind of method being switched fast, the device being switched fast, terminal and base station - Google Patents
A kind of method being switched fast, the device being switched fast, terminal and base station Download PDFInfo
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- CN107454634A CN107454634A CN201610387189.3A CN201610387189A CN107454634A CN 107454634 A CN107454634 A CN 107454634A CN 201610387189 A CN201610387189 A CN 201610387189A CN 107454634 A CN107454634 A CN 107454634A
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- target
- base station
- terminal
- switched
- source base
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
Abstract
The invention discloses a kind of method being switched fast, the device being switched fast, terminal and base station, comprise at least：Terminal sends the instruction message for whether supporting fast switching capability to source base station；When the instruction message shows that the terminal supports fast switching capability, the terminal receives the notification message for being used to indicate to be quickly switched into target BS that the source base station is sent；The terminal calculates the TA or TA for being used to indicate to be quickly switched into that acquisition is calculated by target BS in the notification message of target BS sent from the source base station, and disconnects and be connected with the data of the source base station and carry out data transmit-receive with the target BS.
Description
Technical field
The present invention relates to the handoff technique in the communications field, more particularly to it is a kind of method being switched fast, quick
Device, terminal and the base station of switching.
Background technology
In mobile communication system, in order to ensure quality of service, good business experience is provided the user, when
After some cell and network establish connection, UE is still needed user equipment (UE, User Equipment)
The signal quality of serving cell and neighbor cell is measured, to select suitable cell to switch over,
Meet mobility requirement.Fig. 1 is UE handoff procedure schematic diagrames, as shown in figure 1, Long Term Evolution (LTE,
Long Term Evolution) in system, source base station (source eNB) determines to perform terminal (UE)
Handoff procedure, send handover request message and give target BS (target eNB), target BS is agreed to be cut
Resource is reserved after changing, handoff response is responded to source base station, after source base station receives handoff response, by wirelessly providing
Source control (RRC, Radio Resource Control) is switched over order notice terminal again, and terminal is received
To switching command (A points in Fig. 1), disconnection is connected with the data of source base station, starts to carry out in target BS
It is synchronous, wherein, synchronous package contains down-going synchronous and uplink synchronous, and uplink synchronous is by random access procedure come complete
Into (UE to base station send data before, it is necessary to obtain the uplink synchronous with base station, i.e. obtain hair
Timing Advance (TA, Time Advance) is sent, UE is to reach this purpose by random access procedure),
After successfully completing random access procedure, terminal sends RRC again with completion message to target BS, at this moment, whole
End can carry out data transmit-receive (B points in Fig. 1) by target BS, and handoff procedure terminates.A points and B
Between point, UE and cell-of-origin and Target cell are unable to normal communication, the break period referred to as switched, this
Break period be random access procedure take time, i.e. refer to Stochastic accessing start and complete between when
Between.
Switching mode shown in Fig. 1 causes switching time long because flow is numerous and diverse, is unfavorable for the fast of UE
Quick access enters target BS and carries out corresponding business.But how to be switched fast, there has been no disclosed technology
Scheme can be for reference.
The content of the invention
In order to solve the above technical problems, the embodiments of the invention provide a kind of method being switched fast, quickly cut
Device, terminal and the base station changed.
The method provided in an embodiment of the present invention being switched fast, including：
Terminal sends the instruction message for whether supporting fast switching capability to source base station；
When the instruction message shows that the terminal supports fast switching capability, the terminal receives the source
The notification message for being used to indicate to be quickly switched into target BS that base station is sent；
The terminal calculates Timing Advance (TA) or from source base station transmission for indicating quickly to cut
The TA for obtaining in the notification message of target BS and being calculated by target BS is changed to, and is disconnected and the source base station
Data connect and carry out data transmit-receive with the target BS.
In the embodiment of the present invention, what the terminal reception source base station was sent is quickly switched into mesh for instruction
The notification message of base station is marked, including：
The terminal receives being used for for the source base station transmission with order again by wireless heterogeneous networks (RRC)
Instruction is quickly switched into the notification message of target BS.
It is described to be used to indicate quickly when the TA is calculated by the terminal in the embodiment of the present invention
Be switched to target BS notification message at least carry the configuration of Target cell, Target cell distribution cell without
Line Network Temporary Identifier (C-RNTI), uplink authorization information；
It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS
The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution
Transmission power information, uplink authorization information.
In the embodiment of the present invention, methods described also includes：
After the terminal disconnection is connected with the data of the source base station, sends RRC to the target BS and match somebody with somebody again
Completion message.
In the embodiment of the present invention, the instruction message for whether supporting fast switching capability, including it is following at least
One of：
Support or do not support with the instruction message being switched fast frequently；
The instruction message supported or do not support alien frequencies to be switched fast；
The instruction message supported or do not support synchronizing network to be switched fast；
The instruction message supported or do not support asynchronous network to be switched fast；
Support or do not support the instruction message being switched fast of the first carrier frequency to second carrier frequency, wherein, described the
One carrier frequency and second carrier frequency are identical carrier frequency or are different carrier frequency.
The method provided in an embodiment of the present invention being switched fast, including：
The instruction message for whether supporting fast switching capability that source base station receiving terminal is sent；
When the instruction message shows that the terminal supports fast switching capability, the source base station is to target base
Transmission of standing is switched fast request message, and receive that the target BS sends is switched fast response message；
The source base station sends the notification message that target BS is quickly switched into for instruction to the terminal, together
Source base station described in target BS described in Shi Tongzhi sends the notification message to the terminal；
After the terminal calculates TA or from what the source base station was sent target is quickly switched into for instruction
After the TA calculated by the target BS is obtained in the notification message of base station, the source base station disconnect with it is described
The data connection of terminal.
In the embodiment of the present invention, when TA is calculated by the terminal, the source base station is to target BS
What is sent is switched fast at least to carry in request message and is switched fast configured information；
When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent
The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
In the embodiment of the present invention, the source base station sends to the terminal and is quickly switched into target base for instruction
The notification message stood, including：
The source base station is sent to the terminal with order and is quickly switched into target for instruction again by RRC
The notification message of base station.
The method provided in an embodiment of the present invention being switched fast, including：
What target BS reception source base station was sent is switched fast request message；
The target BS sends to source base station and is switched fast response message, and the response message that is switched fast is taken
The TA or do not carry the TA that band is calculated by the target BS；
The target BS receives the notification message that the source base station is sent, and the notification message is used to indicate institute
State source base station and the notification message that target BS is quickly switched into for instruction is sent to the terminal；
After the terminal calculates TA or from what the source base station was sent target is quickly switched into for instruction
After the TA calculated by the target BS is obtained in the notification message of base station, the target BS and the end
End carries out data transmit-receive.
In the embodiment of the present invention, when the response message that is switched fast does not carry what is calculated by the target BS
During TA, it is described be switched fast response message at least carry the configuration of Target cell, Target cell distribution
C-RNTI, uplink authorization information；
When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut
Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution
Rate information, uplink authorization information.
In the embodiment of the present invention, also taken in the notification message for the source base station transmission that the target BS receives
There is subframe configured information, the subframe configured information is used to indicate the source base station in specified subframe to institute
State terminal and send the notification message that target BS is quickly switched into for instruction.
In the embodiment of the present invention, the subframe specified comprises at least one below：System Frame Number (SFN),
Subframe numbers, sub-frame offset.
In the embodiment of the present invention, the target BS carries out data transmit-receive with the terminal, including：
The target BS computing terminal sends the time of upstream data；
According to the time of the upstream data, the upstream data for waiting the terminal to be received to send.
The device provided in an embodiment of the present invention being switched fast, including：
Transmitting element, the instruction message of fast switching capability whether is supported for being sent to source base station；
Receiving unit, for when the instruction message shows that the terminal supports fast switching capability, receiving
The notification message for being used to indicate to be quickly switched into target BS that the source base station is sent；
Acquiring unit, for calculating TA or being quickly switched into mesh for instruction from what the source base station was sent
Mark the TA for obtaining in the notification message of base station and being calculated by target BS；
Switch unit, it is connected for disconnection with the data of the source base station and enters line number with the target BS
According to transmitting-receiving.
In the embodiment of the present invention, the receiving unit, it is additionally operable to receive the source base with order again by RRC
Stand send be used to indicate be quickly switched into the notification message of target BS.
It is described to be used to indicate quickly when the TA is calculated by the terminal in the embodiment of the present invention
Be switched to target BS notification message at least carry the configuration of Target cell, Target cell distribution cell without
Line Network Temporary Identifier C-RNTI, uplink authorization information；
It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS
The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution
Transmission power information, uplink authorization information.
In the embodiment of the present invention, the transmitting element, it is additionally operable to be connected with the data of the source base station in disconnection
Afterwards, send RRC to the target BS and match somebody with somebody completion message again.
Terminal provided in an embodiment of the present invention, including the above-mentioned device being arbitrarily switched fast.
The device provided in an embodiment of the present invention being switched fast, including：
First receiving unit, the instruction message for whether supporting fast switching capability sent for receiving terminal；
First transmitting element, for when the instruction message shows that the terminal supports fast switching capability,
Sent to target BS and be switched fast request message；
Second receiving unit, response message is switched fast for receive that the target BS sends；
Second transmitting element, the notice of target BS is quickly switched into for instruction for being sent to the terminal
Message, while notify source base station described in the target BS to send the notification message to the terminal；
Switching units, for being used to indicate after the terminal calculates TA or from what the source base station was sent
After being quickly switched into the TA for obtaining in the notification message of target BS and being calculated by the target BS, the source
Base station disconnects to be connected with the data of the terminal.
In the embodiment of the present invention, when TA is calculated by the terminal, the source base station is to target BS
What is sent is switched fast at least to carry in request message and is switched fast configured information；
When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent
The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
Base station provided in an embodiment of the present invention, including the above-mentioned device being arbitrarily switched fast.
The device provided in an embodiment of the present invention being switched fast, including：
First receiving unit, for receive source base station transmission be switched fast request message；
First transmitting element, response message is switched fast for being sent to source base station, it is described to be switched fast response
Message carries the TA calculated by the target BS or does not carry the TA；
Second receiving unit, the notification message sent for receiving the source base station, the notification message are used for
Indicate that the source base station sends the notification message that target BS is quickly switched into for instruction to the terminal；
Data transmission unit, for being used for after the terminal calculates TA or from what the source base station was sent
Indicate after being quickly switched into the TA for obtaining in the notification message of target BS and being calculated by the target BS, institute
State target BS and carry out data transmit-receive with the terminal.
In the embodiment of the present invention, when the response message that is switched fast does not carry what is calculated by the target BS
During TA, it is described be switched fast response message at least carry the configuration of Target cell, Target cell distribution
C-RNTI, uplink authorization information；
When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut
Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution
Rate information, uplink authorization information.
In the embodiment of the present invention, also taken in the notification message for the source base station transmission that the target BS receives
There is subframe configured information, the subframe configured information is used to indicate the source base station in specified subframe to institute
State terminal and send the notification message that target BS is quickly switched into for instruction.
Base station provided in an embodiment of the present invention, including the above-mentioned device being arbitrarily switched fast.
In the technical scheme of the embodiment of the present invention, terminal sends whether support fast switching capability to source base station
Indicate message；When the instruction message shows that the terminal supports fast switching capability, the terminal receives
The notification message for being used to indicate to be quickly switched into target BS that the source base station is sent；The terminal calculates TA
Or obtained from what the source base station was sent for indicating to be quickly switched into the notification message of target BS by mesh
The TA that base station calculates is marked, and is disconnected and is connected with the data of the source base station and enters line number with the target BS
According to transmitting-receiving, in above-mentioned handoff procedure, terminal need not perform random access procedure, be directly entered and target base
The data communication process stood, accelerate switching progress.
Brief description of the drawings
Fig. 1 is the process schematic of UE switchings；
Fig. 2 is the schematic flow sheet of the method being switched fast of the embodiment of the present invention one；
Fig. 3 is the schematic flow sheet of the method being switched fast of the embodiment of the present invention two；
Fig. 4 is the flow chart of the method being switched fast of the embodiment of the present invention three；
Fig. 5 is the flow chart of the method being switched fast of the embodiment of the present invention four；
Fig. 6 is the flow chart of the method being switched fast of the embodiment of the present invention five；
Fig. 7 is the structure composition schematic diagram of the apparatus for fast switching of the embodiment of the present invention six；
Fig. 8 is the structure composition schematic diagram of the apparatus for fast switching of the embodiment of the present invention seven；
Fig. 9 is the structure composition schematic diagram of the apparatus for fast switching of the embodiment of the present invention eight.
Embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings
Realization to the embodiment of the present invention is described in detail, and appended accompanying drawing purposes of discussion only for reference, is not used for
Limit the embodiment of the present invention.
The embodiments of the invention provide a kind of method being switched fast, the device being switched fast, terminal and base station,
In handoff procedure, terminal does not perform random access procedure, is directly entered and was communicated with the data of target BS
Journey, accelerate switching progress.
Terminal perform random access procedure, main purpose be obtain send Timing Advance (TA), based on this,
When terminal does not perform random access procedure, the embodiment of the present invention proposes two ways to obtain TA, the first
Mode is：TA is voluntarily calculated by terminal；The second way is：Target BS carries out TA by other approach
Calculating then notify to terminal.
Fig. 2 is the schematic flow sheet of the method being switched fast of the embodiment of the present invention one, and this example is applied to eventually
Side, as shown in Fig. 2 the method being switched fast comprises the following steps：
Step 201：Terminal sends the instruction message for whether supporting fast switching capability to source base station.
Step 202：When the instruction message shows that the terminal supports fast switching capability, the terminal
Receive the notification message for being used to indicate to be quickly switched into target BS that the source base station is sent.
In the embodiment of the present invention, what the terminal reception source base station was sent is quickly switched into mesh for instruction
The notification message of base station is marked, including：
The terminal receives being quickly switched into for instruction for the source base station transmission with order again by RRC
The notification message of target BS.
It is described to be used to indicate to be quickly switched into target BS when the TA is calculated by the terminal
Notification message at least carries the configuration of Target cell, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of Target cell distribution
C-RNTI, uplink authorization information；
It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS
The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution
Transmission power information, uplink authorization information.
Step 203：The terminal calculates Timing Advance TA or is used to indicate from what the source base station was sent
The TA for obtaining in the notification message of target BS and being calculated by target BS is quickly switched into, and is disconnected and the source
The data of base station connect and carry out data transmit-receive with the target BS.
In the embodiment of the present invention, after the terminal disconnection is connected with the data of the source base station, to the target
Base station sends RRC and matches somebody with somebody completion message again.
The instruction message for whether supporting fast switching capability, including at least one of：
Support or do not support with the instruction message being switched fast frequently；
The instruction message supported or do not support alien frequencies to be switched fast；
The instruction message supported or do not support synchronizing network to be switched fast；
The instruction message supported or do not support asynchronous network to be switched fast；
Support or do not support the instruction message being switched fast of the first carrier frequency to second carrier frequency, wherein, described the
One carrier frequency and second carrier frequency are identical carrier frequency or are different carrier frequency.
Fig. 3 is the schematic flow sheet of the method being switched fast of the embodiment of the present invention two, and this example is applied to source
Base station side, as shown in figure 3, the method being switched fast comprises the following steps：
Step 301：The instruction message for whether supporting fast switching capability that source base station receiving terminal is sent.
Step 302：When the instruction message shows that the terminal supports fast switching capability, the source base
Stand to send to target BS and be switched fast request message, and receive that the target BS sends is switched fast sound
Answer message.
In the embodiment of the present invention, when TA is calculated by the terminal, the source base station is to target BS
What is sent is switched fast at least to carry in request message and is switched fast configured information；
When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent
The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
In the embodiment of the present invention, the up configuration of terminal includes but is not limited to：Channel quality instruction (CQI,
Channel Quality Indicator)、SPS。
Step 303：The source base station is sent for indicating to be quickly switched into the logical of target BS to the terminal
Know message, while notify source base station described in the target BS to send the notification message to the terminal.
In the embodiment of the present invention, the source base station sends to the terminal and is quickly switched into target base for instruction
The notification message stood, including：
The source base station is sent to the terminal with order and is quickly switched into target for instruction again by RRC
The notification message of base station.
Step 304：For indicating quickly to cut after the terminal calculates TA or from source base station transmission
After changing to the TA for obtaining in the notification message of target BS and being calculated by the target BS, the source base station breaks
Open and be connected with the data of the terminal.
Fig. 4 is the schematic flow sheet of the method being switched fast of the embodiment of the present invention three, and this example is applied to mesh
Base station side is marked, as shown in figure 4, the method being switched fast comprises the following steps：
Step 401：What target BS reception source base station was sent is switched fast request message.
Step 402：The target BS sends to source base station and is switched fast response message, described to be switched fast
Response message carries the TA calculated by the target BS or does not carry the TA.
In the embodiment of the present invention, when the response message that is switched fast does not carry what is calculated by the target BS
During TA, it is described be switched fast response message at least carry the configuration of Target cell, Target cell distribution
C-RNTI, uplink authorization information；
When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut
Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution
Rate information, uplink authorization information.
Step 403：The target BS receives the notification message that the source base station is sent, the notification message
Disappear for indicating that the source base station is sent to the terminal for the notice for indicating to be quickly switched into target BS
Breath.
In the embodiment of the present invention, also taken in the notification message for the source base station transmission that the target BS receives
There is subframe configured information, the subframe configured information is used to indicate the source base station in specified subframe to institute
State terminal and send the notification message that target BS is quickly switched into for instruction.
Here, the subframe specified includes but is not limited to：System Frame Number (SFN, System Frame
) and subframe numbers, sub-frame offset Number.Wherein, sub-frame offset be relative to the offset of subframe 0,
For example sub-frame offset is 2, then it represents that specific subframe numbers are 2.
Step 404：For indicating quickly to cut after the terminal calculates TA or from source base station transmission
After changing to the TA for obtaining in the notification message of target BS and being calculated by the target BS, the target BS
Data transmit-receive is carried out with the terminal.
In the embodiment of the present invention, the target BS computing terminal sends the time of upstream data；
According to the time of the upstream data, the upstream data for waiting the terminal to be received to send.
Fig. 5 is the flow chart of the method being switched fast of the embodiment of the present invention four, and in this example, cell 1 is
LTE cell, center carrier frequence are f1.Cell 2 is LTE cell, is the neighbor cell of cell 1, in
Heart carrier frequency is f2.Cell 1 and cell 2 are synchronizing networks.
Current UE is in connection status in cell 1.As shown in figure 5, this flow includes：
Step 501：Terminal reports the switching for whether supporting not performing random access procedure (hereinafter referred to as quick
Switching) ability is to source base station, if support the ability being switched fast.
It can be described by following several respects：
1) terminal is supported or does not support to be switched fast, and now reports support；
2) terminal support or do not support be switched fast frequently, alien frequencies is switched fast, now report supports, prop up
Hold；
3) terminal is supported or does not support synchronizing network to be switched fast, asynchronous network is switched fast, and is now reported
Support, support；
4) terminal is supported or does not support carrier frequency a being switched fast to carrier wave b, enumerates and supports what is be switched fast
Carrier frequency pair, or the carrier frequency pair for not supporting to be switched fast is enumerated, now report and support carrier frequency f1 to carrier frequency f2
Be switched fast.
Network side has issued measurement of the neighboring cell signal quality better than the trigger event (A3) of serving cell to UE
Task (Measurement control), measurement object carrier frequency is f2.
Step 502：UE performs measurement, finds the trigger condition that the cell 2 on f2 meets event A3, on
Report measurement report (Measurement report) gives network side.
Step 503：Network based on terminal capabilities, and measurement report, and the information such as load of target BS,
Decision allows UE to be switched in cell 2 (Handover decision), sends switching warning order (Handover
Request cell 2) is given, carrying needs to perform fast handover procedures.
Step 504：After cell 2 receives handover request order, handoff response (Handover request are sent
Ack cell 1) is given, wherein, the terminal in the switching command also comprising the distribution of cell 2 is in the interim of cell 2
Identify (Cell-Radio Network Temp Identity, referred to as C-RNTI), the information (example of cell 2
Such as, relevant information, the other information of cell 2 comprising f2 and f2), also cell 2 keeps for terminal
Uplink authorization information.
Step 505：After cell 1 receives handoff response, the suitable time is selected, the switching command is forwarded
UE (RRC reconfiguration (Handover)) is given, includes the configuration of cell 2, and cell 2 is distributed
The information such as C-RNTI, uplink authorization,
The notifying cell 2 of cell 1, send switching command to terminal, comprising send switching command to terminal when
Between information such as in specified subframe (such as SFN3, subframe 4, or sub-frame offset 4), the information ratio of terminal
Such as the mark of terminal, configured information is also switched fast.
Step 506：Cell 2 is after the persond eixis information of cell 1 is received, voluntarily in computing terminal transmission
The time of row data, wait to be received.
Terminal receives switching command, voluntarily calculates TA, calculates Initial Trans, disconnects the number with cell 1
According to connection, using the configuration of cell 2, resource is specified to send RRC again with completion in the uplink authorization of cell 2
Message is to cell 2, and at this moment, terminal can carry out data transmit-receive by cell 2, and handoff procedure terminates.
Fig. 6 is the flow chart of the method being switched fast of the embodiment of the present invention five, and in this example, cell 1 is
LTE cell, center carrier frequence are f1.Cell 2 is LTE cell, is the neighbor cell of cell 1, in
Heart carrier frequency is f1.Cell 1 and cell 2 are asynchronous networks.
Current UE is in connection status in cell 1.As shown in fig. 6, this flow includes：
Step 601：Terminal reports the switching for whether supporting not performing random access procedure (hereinafter referred to as quick
Switching) ability is to source base station, if the ability being switched fast is supported, can be described by following several respects：
1) terminal is supported or does not support to be switched fast, and now reports support；
2) terminal support or do not support be switched fast frequently, alien frequencies is switched fast, now report supports, prop up
Hold；
3) terminal is supported or does not support synchronizing network to be switched fast, asynchronous network is switched fast, and is now reported
Support, support；
4) terminal is supported or does not support carrier frequency a being switched fast to carrier wave b, enumerates and supports what is be switched fast
Carrier frequency pair, or the carrier frequency pair for not supporting to be switched fast is enumerated, now report and support carrier frequency f1 to carrier frequency f1
It is switched fast.
Network side has issued measurement of the neighboring cell signal quality better than the trigger event (A3) of serving cell to UE
Task (Measurement control), measurement object carrier frequency is f1.
Step 602：UE performs measurement, it is found that f1 cell 2 meets event A3 trigger condition, report
Measurement report (Measurement report) give network side.
Step 603：Network based on terminal capabilities, and measurement report, and the information such as load of target BS,
Decision allows UE to be switched in cell 2 (Handover decision), sends switching warning order (Handover
Request cell 2) is given, carries the up configuration such as CQI for needing to perform fast handover procedures, also terminal,
SPS etc.
Step 604：After cell 2 receives handover request order, computing terminal of awaiting a favorable opportunity access cell 2
TA, send handoff response (Handover request ack) give cell 1, wherein, in the switching command
Also include temporary mark (Cell-Radio Network Temp of the terminal in cell 2 of the distribution of cell 2
Identity, referred to as C-RNTI), the information of cell 2 (for example, the relevant information comprising f2 and f2,
The other information of cell 2), the also TA of terminal access cell 2, Initial Trans information, cell 2
The information such as the uplink authorization of terminal are kept for,
Step 605：After cell 1 receives handoff response, the suitable time is selected, the switching command is forwarded
UE (RRC reconfiguration (Handover)) is given, includes the configuration of cell 2, and cell 2 is distributed
C-RNTI, terminal accesses the TA of cell 2, and Initial Trans information, cell 2 keeps for terminal
The information such as uplink authorization,
The notifying cell 2 of cell 1, send switching command to terminal, comprising send switching command to terminal when
Between information such as specify subframe (such as SFN3, subframe 4, or sub-frame offset for 4), the information ratio of terminal
Such as the mark of terminal, configured information is also switched fast.
Step 606：Cell 2 is after the persond eixis information of cell 1 is received, voluntarily in computing terminal transmission
The time of row data, wait to be received.
Terminal receives switching command, obtains TA, obtains Initial Trans information, disconnects the number with cell 1
According to connection, using the configuration of cell 2, resource is specified to send RRC again with completion in the uplink authorization of cell 2
Message is to cell 2, and at this moment, terminal can carry out data transmit-receive by cell 2, and handoff procedure terminates.
Fig. 7 is the structure composition schematic diagram of the device being switched fast of the embodiment of the present invention six, as shown in fig. 7,
The device being switched fast includes：
Transmitting element 71, the instruction message of fast switching capability whether is supported for being sent to source base station；
Receiving unit 72, for when the instruction message shows that the terminal supports fast switching capability, connecing
Receive the notification message for being used to indicate to be quickly switched into target BS that the source base station is sent；
Acquiring unit 73, for calculating TA or being quickly switched into from what the source base station was sent for instruction
The TA calculated by target BS is obtained in the notification message of target BS；
Switch unit 74, it is connected with the data of the source base station for disconnecting and is carried out with the target BS
Data transmit-receive.
In the embodiment of the present invention, the receiving unit 72, it is additionally operable to by RRC again with described in order reception
The notification message for being used to indicate to be quickly switched into target BS that source base station is sent.
It is described to be used to indicate quickly when the TA is calculated by the terminal in the embodiment of the present invention
Be switched to target BS notification message at least carry the configuration of Target cell, Target cell distribution cell without
Line Network Temporary Identifier C-RNTI, uplink authorization information；
It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS
The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution
Transmission power information, uplink authorization information.
In the embodiment of the present invention, the transmitting element 71, it is additionally operable to disconnect and the data of source base station company
After connecing, send RRC to the target BS and match somebody with somebody completion message again.
In the embodiment of the present invention, the instruction message for whether supporting fast switching capability, including it is following at least
One of：
Support or do not support with the instruction message being switched fast frequently；
The instruction message supported or do not support alien frequencies to be switched fast；
The instruction message supported or do not support synchronizing network to be switched fast；
The instruction message supported or do not support asynchronous network to be switched fast；
Support or do not support the instruction message being switched fast of the first carrier frequency to second carrier frequency, wherein, described the
One carrier frequency and second carrier frequency are identical carrier frequency or are different carrier frequency.
It will be appreciated by those skilled in the art that the realization of each unit in the device being switched fast shown in Fig. 7
Function can refer to the associated description of each embodiment and application examples of the foregoing method being switched fast and understand.
Present invention also offers a kind of terminal, the terminal includes the device being switched fast shown in Fig. 7.
Fig. 8 is the structure composition schematic diagram of the device being switched fast of the embodiment of the present invention seven, as shown in figure 8,
The device being switched fast includes：
First receiving unit 81, the instruction for whether supporting fast switching capability sent for receiving terminal disappear
Breath；
First transmitting element 82, for showing that the terminal supports fast switching capability when the instruction message
When, sent to target BS and be switched fast request message；
Second receiving unit 83, response message is switched fast for receive that the target BS sends；
Second transmitting element 84, for being sent to the terminal for indicating to be quickly switched into the logical of target BS
Know message, while notify source base station described in the target BS to send the notification message to the terminal；
Switching units 85, for being used to refer to after the terminal calculates TA or from what the source base station was sent
It is described after showing the TA for obtaining in the notification message for be quickly switched into target BS and being calculated by the target BS
Source base station disconnects to be connected with the data of the terminal.
In the embodiment of the present invention, when TA is calculated by the terminal, the source base station is to target BS
What is sent is switched fast at least to carry in request message and is switched fast configured information；
When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent
The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
The embodiment of the present invention additionally provides a kind of base station, and the base station is source base station, and the base station includes Fig. 8
The shown device being switched fast.
It will be appreciated by those skilled in the art that each unit in base station shown in Fig. 8 realizes that function can refer to
The associated description of each embodiment and application examples of the foregoing method being switched fast and understand.
Fig. 9 is the structure composition schematic diagram of the device being switched fast of the embodiment of the present invention eight, as shown in figure 9,
The device being switched fast includes：
First receiving unit 91, for receive source base station transmission be switched fast request message；
First transmitting element 92, response message is switched fast for being sent to source base station, it is described to be switched fast sound
Message is answered to carry the TA calculated by the target BS or do not carry the TA；
Second receiving unit 93, the notification message sent for receiving the source base station, the notification message are used
The notification message that target BS is quickly switched into for instruction is sent to the terminal in the instruction source base station；
Data transmission unit 94, for the use sent after the terminal calculates TA or from the source base station
After instruction is quickly switched into the TA that acquisition is calculated by the target BS in the notification message of target BS,
The target BS carries out data transmit-receive with the terminal.
In the embodiment of the present invention, when the response message that is switched fast does not carry what is calculated by the target BS
During TA, it is described be switched fast response message at least carry the configuration of Target cell, Target cell distribution
C-RNTI, uplink authorization information；
When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut
Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution
Rate information, uplink authorization information.
In the embodiment of the present invention, also taken in the notification message for the source base station transmission that the target BS receives
There is subframe configured information, the subframe configured information is used to indicate the source base station in specified subframe to institute
State terminal and send the notification message that target BS is quickly switched into for instruction.
The subframe specified comprises at least one below：SFN, subframe numbers, sub-frame offset.
It will be appreciated by those skilled in the art that the realization of each unit in the device being switched fast shown in Fig. 9
Function can refer to the associated description of each embodiment and application examples of the foregoing method being switched fast and understand.
The embodiment of the present invention additionally provides a kind of base station, and the base station is target BS, and the base station includes figure
The device being switched fast shown in 9.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with
Realized with general computing device, they can be concentrated on single computing device, or are distributed in more
On the network that individual computing device is formed, alternatively, the program code that they can be can perform with computing device
To realize, it is thus possible to be stored in storage device by computing device to perform, and some
In the case of, can be to perform shown or described step different from order herein, or they are distinguished
Each integrated circuit modules are fabricated to, or the multiple modules or step in them are fabricated to single integrated electricity
Road module is realized.So, the present invention is not restricted to any specific hardware and software combination.
, can be in any combination in the case where not conflicting between technical scheme described in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and smart machine,
It can realize by another way.Apparatus embodiments described above are only schematical, for example,
The division of the unit, only a kind of division of logic function, can there is other division side when actually realizing
Formula, such as：Multiple units or component can combine, or be desirably integrated into another system, or some features can
To ignore, or do not perform.In addition, the coupling or straight that shown or discussed each part is mutual
Connect coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of equipment or unit,
Can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, as
The part that unit is shown can be or may not be physical location, you can positioned at a place, also may be used
To be distributed on multiple NEs；Partly or entirely unit therein can be selected according to the actual needs
Realize the purpose of this embodiment scheme.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing list
In member or each unit is individually as a unit, can also two or more unit collection
Into in a unit；Above-mentioned integrated unit can both be realized in the form of hardware, can also use hard
Part adds the form of SFU software functional unit to realize.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, can readily occur in
Change or replacement, it should all be included within the scope of the present invention.
Claims (25)
- A kind of 1. method being switched fast, it is characterised in that methods described includes：Terminal sends the instruction message for whether supporting fast switching capability to source base station；When the instruction message shows that the terminal supports fast switching capability, the terminal receives the source The notification message for being used to indicate to be quickly switched into target BS that base station is sent；The terminal calculates Timing Advance TA or is switched fast from what the source base station was sent for instruction The TA calculated by target BS is obtained into the notification message of target BS, and disconnects the number with the source base station Data transmit-receive is carried out according to connection and with the target BS.
- 2. the method according to claim 1 being switched fast, it is characterised in that the terminal receives institute The notification message for being used to indicate to be quickly switched into target BS of source base station transmission is stated, including：The terminal is used to refer to what the order reception source base station was sent again by radio resource control RRC Show the notification message for being quickly switched into target BS.
- 3. the method according to claim 1 being switched fast, it is characterised in that when the TA is by institute When stating terminal and being calculated, the notification message for being used to indicate to be quickly switched into target BS at least carries mesh Mark the configuration of cell, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of Target cell distribution, uplink authorization information；It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution Transmission power information, uplink authorization information.
- 4. the method being switched fast according to any one of claims 1 to 3, it is characterised in that described Method also includes：After the terminal disconnection is connected with the data of the source base station, sends RRC to the target BS and match somebody with somebody again Completion message.
- 5. the method being switched fast according to any one of claims 1 to 3, it is characterised in that described Whether the instruction message of fast switching capability, including at least one of are supported：Support or do not support with the instruction message being switched fast frequently；The instruction message supported or do not support alien frequencies to be switched fast；The instruction message supported or do not support synchronizing network to be switched fast；The instruction message supported or do not support asynchronous network to be switched fast；Support or do not support the instruction message being switched fast of the first carrier frequency to second carrier frequency, wherein, described the One carrier frequency and second carrier frequency are identical carrier frequency or are different carrier frequency.
- A kind of 6. method being switched fast, it is characterised in that methods described includes：The instruction message for whether supporting fast switching capability that source base station receiving terminal is sent；When the instruction message shows that the terminal supports fast switching capability, the source base station is to target base Transmission of standing is switched fast request message, and receive that the target BS sends is switched fast response message；The source base station sends the notification message that target BS is quickly switched into for instruction to the terminal, together Source base station described in target BS described in Shi Tongzhi sends the notification message to the terminal；After the terminal calculates TA or from what the source base station was sent target is quickly switched into for instruction After the TA calculated by the target BS is obtained in the notification message of base station, the source base station disconnect with it is described The data connection of terminal.
- 7. the method according to claim 6 being switched fast, it is characterised in thatWhen TA is calculated by the terminal, the source base station to target BS send be switched fast please Ask at least to carry in message and be switched fast configured information；When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
- 8. the method according to claim 6 being switched fast, it is characterised in that the source base station is to institute State terminal and send the notification message that target BS is quickly switched into for instruction, including：The source base station is sent to the terminal with order and is quickly switched into target for instruction again by RRC The notification message of base station.
- A kind of 9. method being switched fast, it is characterised in that methods described includes：What target BS reception source base station was sent is switched fast request message；The target BS sends to source base station and is switched fast response message, and the response message that is switched fast is taken The TA or do not carry the TA that band is calculated by the target BS；The target BS receives the notification message that the source base station is sent, and the notification message is used to indicate institute State source base station and the notification message that target BS is quickly switched into for instruction is sent to the terminal；After the terminal calculates TA or from what the source base station was sent target is quickly switched into for instruction After the TA calculated by the target BS is obtained in the notification message of base station, the target BS and the end End carries out data transmit-receive.
- 10. the method according to claim 9 being switched fast, it is characterised in thatWhen it is described be switched fast response message and do not carry the TA calculated by the target BS when, it is described quick Switching response message at least carries the configuration of Target cell, the C-RNTI of Target cell distribution, uplink authorization letter Breath；When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution Rate information, uplink authorization information.
- 11. the method according to claim 9 being switched fast, it is characterised in that the target BS Subframe configured information, the subframe configured information are also carried in the notification message that the source base station received is sent For indicating that the source base station is sent in specified subframe to the terminal target is quickly switched into for instruction The notification message of base station.
- 12. the method according to claim 11 being switched fast, it is characterised in that the son specified Frame comprises at least one below：System frame number SFN, subframe numbers, sub-frame offset.
- 13. the method being switched fast according to any one of claim 9 to 12, it is characterised in that institute State target BS and carry out data transmit-receive with the terminal, including：The target BS computing terminal sends the time of upstream data；According to the time of the upstream data, the upstream data for waiting the terminal to be received to send.
- 14. a kind of device being switched fast, it is characterised in that described device includes：Transmitting element, the instruction message of fast switching capability whether is supported for being sent to source base station；Receiving unit, for when the instruction message shows that the terminal supports fast switching capability, receiving The notification message for being used to indicate to be quickly switched into target BS that the source base station is sent；Acquiring unit, for calculating TA or being quickly switched into mesh for instruction from what the source base station was sent Mark the TA for obtaining in the notification message of base station and being calculated by target BS；Switch unit, it is connected for disconnection with the data of the source base station and enters line number with the target BS According to transmitting-receiving.
- 15. the device according to claim 14 being switched fast, it is characterised in that the receiving unit, It is additionally operable to be quickly switched into target base for instruction with what the order reception source base station was sent again by RRC The notification message stood.
- 16. the device according to claim 14 being switched fast, it is characterised in that when the TA by When the terminal is calculated, the notification message for being used to indicate to be quickly switched into target BS at least carries The configuration of Target cell, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of Target cell distribution, uplink authorization letter Breath；It is described to be quickly switched into target base for instruction when the TA is calculated by the target BS The notification message stood at least carries C-RNTI, TA, initial of the configuration of Target cell, Target cell distribution Transmission power information, uplink authorization information.
- 17. the device being switched fast according to any one of claim 14 to 16, it is characterised in thatThe transmitting element, it is additionally operable to after disconnection is connected with the data of the source base station, to the target base The transmission RRC that stands matches somebody with somebody completion message again.
- 18. a kind of terminal, it is characterised in that the terminal is included described in any one of claim 14 to 17 The device being switched fast.
- 19. a kind of device being switched fast, it is characterised in that described device includes：First receiving unit, the instruction message for whether supporting fast switching capability sent for receiving terminal；First transmitting element, for when the instruction message shows that the terminal supports fast switching capability, Sent to target BS and be switched fast request message；Second receiving unit, response message is switched fast for receive that the target BS sends；Second transmitting element, the notice of target BS is quickly switched into for instruction for being sent to the terminal Message, while notify source base station described in the target BS to send the notification message to the terminal；Switching units, for being used to indicate after the terminal calculates TA or from what the source base station was sent After being quickly switched into the TA for obtaining in the notification message of target BS and being calculated by the target BS, the source Base station disconnects to be connected with the data of the terminal.
- 20. the device according to claim 19 being switched fast, it is characterised in that when TA is by described When terminal is calculated, the source base station at least carries to being switched fast in request message of sending of target BS It is switched fast configured information；When TA is calculated by the target BS, the source base station is quickly cut to what target BS was sent The up configuration at least carrying and being switched fast configured information, terminal is changed in request message.
- 21. a kind of base station, it is characterised in that the base station includes quick described in claim 19 or 20 The device of switching.
- 22. a kind of device being switched fast, it is characterised in that described device includes：First receiving unit, for receive source base station transmission be switched fast request message；First transmitting element, response message is switched fast for being sent to source base station, it is described to be switched fast response Message carries the TA calculated by the target BS or does not carry the TA；Second receiving unit, the notification message sent for receiving the source base station, the notification message are used for Indicate that the source base station sends the notification message that target BS is quickly switched into for instruction to the terminal；Data transmission unit, for being used for after the terminal calculates TA or from what the source base station was sent Indicate after being quickly switched into the TA for obtaining in the notification message of target BS and being calculated by the target BS, institute State target BS and carry out data transmit-receive with the terminal.
- 23. the device according to claim 22 being switched fast, it is characterised in that quickly cut when described It is described to be switched fast response message at least when changing response message and not carrying the TA calculated by the target BS Carry configuration, the C-RNTI of Target cell distribution of Target cell, uplink authorization information；When it is described be switched fast response message carry calculated by the target BS TA when, it is described quickly to cut Change response message and also at least carry the configuration of Target cell, C-RNTI, the initial transmissions work(of Target cell distribution Rate information, uplink authorization information.
- 24. the device according to claim 22 being switched fast, it is characterised in that the target BS Subframe configured information, the subframe configured information are also carried in the notification message that the source base station received is sent For indicating that the source base station is sent in specified subframe to the terminal target is quickly switched into for instruction The notification message of base station.
- 25. a kind of base station, it is characterised in that the base station is included described in any one of claim 22 to 24 The device being switched fast.
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| CN201610387189.3A CN107454634A (en) | 2016-06-01 | 2016-06-01 | A kind of method being switched fast, the device being switched fast, terminal and base station |
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| CN201610387189.3A CN107454634A (en) | 2016-06-01 | 2016-06-01 | A kind of method being switched fast, the device being switched fast, terminal and base station |
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