CN104284377B - The method for improving switching command transmission and/or measurement report transmission in communication network - Google Patents
The method for improving switching command transmission and/or measurement report transmission in communication network Download PDFInfo
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- CN104284377B CN104284377B CN201310285793.1A CN201310285793A CN104284377B CN 104284377 B CN104284377 B CN 104284377B CN 201310285793 A CN201310285793 A CN 201310285793A CN 104284377 B CN104284377 B CN 104284377B
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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
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The present invention provides a kind of methods for improving switching command and/or measurement report transmission in a communication network.In the present invention, EPDCCH is configured in cell and is used for transmission the Downlink Control Information for switching command or the uplink authorization for measurement report.It is the transimission power on the resource block of EPDCCH distribution in cell by the data transmission stopped in cell on the resource block for being EPDCCH distribution or reduction correspondingly, in macrocell.Therefore, the transmission for the Downlink Control Information in cell or the transmission of uplink authorization, the main interference from macrocell are eliminated, and therefore, mobility performance can be greatly improved.
Description
Technical field
The present invention relates to reported in communication network more particularly to communication network for improving switching command transmission and/or measuring
The method for accusing transmission.
Background technology
3GPP RAN2 have realized that the mobility problem in heterogeneous network by many emulation.According to
TR36.839vb10, following table show average handover failure rate result.
Table 1：Average handover failure rate emulation data in state 2 and state 3
And average total handover failure rate emulation data
According to upper table it can be found that the handover failure rate of state 2 is much larger than the handover failure rate of state 3.In state 2,
User equipment still keeps connecting with cell-of-origin, but the channel quality of cell-of-origin and bad, so that user equipment can not
It sends measurement report or receives switching command.In state 3, user equipment has been received by the switching for being connected to Target cell
Order, but the channel quality of Target cell and bad, so that user equipment can not access Target cell.
Handover failure in state 2 is mainly due to switching command transmission failure or measurement report transmission failure.Especially
, for the handoff scenario of cell (pico cell) to macrocell (macro cell), positioned at the user of the small cell edge in source
Equipment will suffer from from the stronger interference of target macrocell, this will cause user equipment that can not receive switching command or lead
Cause user equipment that can not receive uplink authorization (UL grant) so as to send measurement report to source cell.
Invention content
The central scope of the present invention is using EPDCCH transmission for the Downlink Control Information of switching command or for surveying
Measure the uplink authorization of report.
One embodiment according to the first aspect of the invention, provide it is a kind of in the source base station of communication network for carrying
The method of high switching command and measurement report transmission accuracy, includes the following steps：
The first measurement report from user equipment is received, first measurement report is used to indicate Target cell and compares source
Cell channel quality is good the first amount of bias or receive from the user equipment for the request of EPDCCH to be configured；
It is the user device configuration EPDCCH according to first measurement report or the request received；
Send the RRC connection reconfigurations that EPDCCH configuration informations include EPDCCH configuration informations to target BS and transmission
Message is put to the user equipment, the EPDCCH configuration informations include transport-type, resource block distribution and the configuration of subframe pattern；
Uplink authorization for measurement report is sent to the user equipment by the EPDCCH that is configured；
The second measurement report from the user equipment is received, second measurement report is used to indicate the target
Cell is than channel quality is good for the cell-of-origin the second amount of bias；
Transmission handovers request to the target BS；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
Advantageous, the above method is further comprising the steps of：
The first notice from the target BS is received, first notice has been used to indicate the target BS
Stop in the cell-of-origin for EPDCCH distribution resource block transmitting data or be used to indicate the target BS
It reduces in the cell-of-origin as the transimission power on the resource block of EPDCCH distribution.
Advantageous, the above method is further comprising the steps of：
The second notice is sent to the target BS, second notice is used to indicate not to be treated in the cell-of-origin
The user equipment of switching.
Advantageous, the above method is further comprising the steps of：
The information that PDSCH is used for transmission to the resource block of switching command is sent to the target BS.
Advantageous, first amount of bias is -6dB, and second amount of bias is -3dB.
Another embodiment according to the first aspect of the invention is provided and a kind of is used in the target BS of communication network
In the method for improving switching command and measurement report transmission accuracy, include the following steps：
The EPDCCH configuration informations from source base station are received, the EPDCCH configuration informations include transport-type, resource block
Distribution and the configuration of subframe pattern；
Stop in cell-of-origin for EPDCCH distribution resource block on data transmission or reduce in the cell-of-origin
In for EPDCCH distribution resource block on transimission power；
Receive the handover request from the source base station；
Handover Request Acknowledge is sent to the source base station.
Advantageous, the above method is further comprising the steps of：
The first notice is sent to the source base station, first notice is used to indicate the target BS and has stopped at
In the cell-of-origin for EPDCCH distribution resource block transmitting data or be used to indicate the target BS it is reduced
It is the transimission power on the resource block of EPDCCH distribution in the cell-of-origin.
Advantageous, the above method is further comprising the steps of：
The second notice from the source base station is received, second notice is used to indicate not to be had in the cell-of-origin
To be switched user equipment；
Restore to be the data transmission on the resource block of EPDCCH distribution or recovery in the cell-of-origin in the source
It is the transimission power on the resource block of EPDCCH distribution in cell.
Advantageous, the above method is further comprising the steps of：
Receive the information that the PDSCH from source base station is used for transmission the resource block of switching command；
It stops at data transmission that PDSCH is used for transmission on the resource block of switching command or reduces and be used in PDSCH
Transmit the transimission power on the resource block of switching command.
Another embodiment according to the first aspect of the invention is provided and a kind of is used in the user equipment of communication network
In the method for improving switching command and measurement report transmission accuracy, include the following steps：
The first measurement report is sent to source base station, first measurement report is used to indicate Target cell than cell-of-origin
The first amount of bias that channel quality is good sends that the request of EPDCCH is configured to the source base station；
It receives the RRC connection reconfigurations including EPDCCH configuration informations from the source base station and puts message, the EPDCCH
Configuration information includes transport-type, resource block distribution and the configuration of subframe pattern；
The uplink authorization for measurement report from the source base station is received by the EPDCCH being configured；
The second measurement report is sent to the source base station, second measurement report is used to indicate the Target cell ratio
The second amount of bias that channel quality is good for the cell-of-origin；
The Downlink Control Information for switching command from the source base station is received by the EPDCCH being configured；
Access target BS.
One embodiment according to the second aspect of the invention, provide it is a kind of in the source base station of communication network for carrying
The method of high switching command transmission accuracy, includes the following steps：
The third measurement report from user equipment is received, the third measurement report is used to indicate Target cell and compares source
Cell channel quality is good third amount of bias；
It is the user device configuration EPDCCH according to the third measurement report received；
Send include EPDCCH configuration informations handover request to target BS and send include EPDCCH match confidence
The RRC connection reconfigurations of breath put message to the user equipment, and the EPDCCH configuration informations include transport-type, resource block distributes
It is configured with subframe pattern；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
Advantageous, the third amount of bias is -3dB.
Another embodiment according to the second aspect of the invention is provided and a kind of is used in the target BS of communication network
In the method for improving switching command transmission accuracy, include the following steps：
The handover request for including EPDCCH configuration informations from source base station is received, the EPDCCH configuration informations include
Transport-type, resource block distribution and the configuration of subframe pattern；
Stop in cell-of-origin for EPDCCH distribution resource block on data transmission or reduce in the cell-of-origin
In for EPDCCH distribution resource block on transimission power；
Handover Request Acknowledge is sent to the source base station.
Another embodiment according to the second aspect of the invention is provided and a kind of is used in the user equipment of communication network
In the method for improving switching command transmission accuracy, include the following steps：
Third measurement report is sent to source base station, the third measurement report is used to indicate Target cell than cell-of-origin
Third amount of bias that channel quality is good；
It receives the RRC connection reconfigurations including EPDCCH configuration informations from the source base station and puts message, the EPDCCH
Configuration information includes transport-type, resource block distribution and the configuration of subframe pattern；
The Downlink Control Information for switching command from the source base station is received by the EPDCCH being configured；
Access target BS.
One embodiment according to the third aspect of the invention we, provide it is a kind of in the source base station of communication network for carrying
The method of high switching command transmission accuracy, includes the following steps：
The third measurement report from user equipment is received, the third measurement report is used to indicate Target cell and compares source
Cell channel quality is good third amount of bias；
It is the user device configuration EPDCCH according to the third measurement report received；
The message for including EPDCCH configuration informations is sent to target BS, sends the RRC companies for including EPDCCH configuration informations
It connects reconfiguration message to the user equipment and transmission and handovers request to the target BS, the EPDCCH configuration informations packet
Include transport-type, resource block distribution and the configuration of subframe pattern；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
Another embodiment according to the third aspect of the invention we is provided and a kind of is used in the target BS of communication network
In the method for improving switching command transmission accuracy, include the following steps：
Receive the switching of message and reception from the source base station including EPDCCH configuration informations from source base station
Request, the EPDCCH configuration informations include transport-type, resource block distribution and the configuration of subframe pattern；
Stop in cell-of-origin for EPDCCH distribution resource block on data transmission or reduce in the cell-of-origin
In for EPDCCH distribution resource block on transimission power；
Handover Request Acknowledge is sent to the source base station.
Advantageous, communication network of the invention can be such as heterogeneous network.
Advantageous, cell-of-origin of the invention can be such as cell, and Target cell can be such as macrocell.
By technical scheme of the present invention, EPDCCH is configured in cell for transmission under switching command
Row control information or the uplink authorization for measurement report.Correspondingly, in macrocell, it will stop in cell and be
Data transmission or reduction on the resource block of EPDCCH distribution are the transmission on the resource block of EPDCCH distribution in cell
Power.Therefore, the transmission for the Downlink Control Information in cell or the transmission of uplink authorization, it is main dry from macrocell
It disturbs and is eliminated, therefore, mobility performance can be greatly improved, because user equipment can successfully send measurement report
It accuses and correctly receives switching command.
Various aspects of the invention will be more clear by the explanation of embodiment in detail below.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent：
Fig. 1 shows the subframe structure schematic diagram in cell according to an embodiment of the invention；
Fig. 2 shows the handoff procedure schematic diagrames of cell according to an embodiment of the invention to macrocell；
The method that Fig. 3 shows the transmission of improvement switching command and measurement report transmission according to an embodiment of the invention
Flow chart；And
Fig. 4 shows the flow chart of the method for improvement switching command transmission according to an embodiment of the invention.
Same or similar reference numeral represents identical or corresponding component or feature in the figure.
Specific embodiment
Hereinafter, purpose is merely illustrative, to the present invention by taking cell-of-origin is cell and Target cell is macrocell as an example
The embodiments of various aspects be described in detail.
In order to achieve the object of the present invention, as shown in Figure 1, EPDCCH is configured in cell for transmitting to switch
The Downlink Control Information of order and/or the uplink authorization for measurement report.With reference to Fig. 1, a subframe is made of two time slots,
Respectively the first time slot and the second time slot, wherein,Represent PDCCH,Represent PDSCH andIt represents
EPDCCH.Advantageous, the Physical Resource Block for EPDCCH can be semi-static, it means that be provided for the physics of EPDCCH
Source block can be shared by multiple user equipmenies in cell.
Fig. 2 shows the handoff procedures of cell to macrocell.Cell and macrocell are located at identical frequency.
With reference to Fig. 2, at point A, user equipment sends measurement report and is used to indicate adjacent cell (that is, macrocell) than service
Cell (that is, cell) channel quality is good the first Configuration Values, for example, -6dB.
At point B, user equipment send measurement report be used to indicate adjacent cell (that is, macrocell) than serving cell (
That is, cell) channel quality is good the second Configuration Values, for example, -3dB.Then, small-cell base station will trigger handoff procedure.
At point C, user equipment receives the switching command from small-cell base station.
The method that Fig. 3 shows the transmission of improvement switching command and measurement report transmission according to an embodiment of the invention
Flow chart.
With reference to Fig. 3 and with reference to Fig. 2, in step 301, at point A, the user equipment 30 in cell sends first and measures
Report is used to indicate macrocell than cell channel quality is good the first amount of bias to small-cell base station 10；Or user equipment
30 transmissions are for being configured the request of EPDCCH to small-cell base station 10, because the user equipment 30 is by stronger from macrocell
Interference.First amount of bias can be, such as -6dB.
After the first measurement report or the request from user equipment 30 is received, in step 302, small-cell base station
10 are configured EPDCCH for user equipment 30.Specifically, based on the first measurement report received at user equipment 30, cell
Base station 10 knows that the user equipment 30 is likely to be switched, and therefore, EPDCCH is configured for user equipment 30 in small-cell base station 10,
It can correctly be transmitted for the Downlink Control Information of switching command and for measurement report with small-cell base station 10 after ensuring
Uplink authorization.
Then, in step 302, small-cell base station 10 sends EPDCCH configuration informations to macro cell base station 20 and sends
RRC connection reconfigurations including EPDCCH configuration informations put message to user equipment 30.The EPDCCH configuration informations include transmission class
Type (for example, centralization or distributed), resource block distribution and the configuration of subframe pattern.Advantageous, EPDCCH configuration informations can be with
Further comprise primary sign.
After the EPDCCH configuration informations from small-cell base station 10 are received, macro cell base station 20 is stopped in cell
It is the physics of EPDCCH distribution in the cell-of-origin for the data transmission on the Physical Resource Block of EPDCCH distribution or reduction
Transimission power on resource block.Advantageous, macro cell base station 20 can send the first notice to small-cell base station 10, be used to indicate
Macro cell base station 20 stopped in cell for EPDCCH distribution Physical Resource Block transmitting data or be used to indicate
Reduced macro cell base station 20 is the transimission power on the Physical Resource Block of EPDCCH distribution in cell.
Then, in step 305, small-cell base station 10 is sent by the EPDCCH being configured and is awarded for the uplink of side amount report
It weighs to user equipment 30.That is, small-cell base station 10 is sent on the Physical Resource Block distributed for EPDCCH for measurement report
Uplink authorization to user equipment 30, (according to current standard, small-cell base station 10 understand that user equipment has and for example measure
The upstream datas such as report need to send).Because macro cell base station 20 has stopped at the physics for EPDCCH distribution in cell
Data transmission or reduction on resource block are the transmission work(on the Physical Resource Block of EPDCCH distribution in the cell-of-origin
Rate, therefore, the main interference from macro cell base station 20 are eliminated, and thus user equipment 30 can be correctly received to come from childhood
The uplink authorization for measurement report of cell base station 10.
When receive from small-cell base station 10 for measurement report uplink authorization after, in step 308, in point B
Place, user equipment 30 send the second measurement report to small-cell base station 10, are used to indicate channel quality of the macrocell than cell
Second amount of bias.Second amount of bias can be, such as -3dB.
After the second measurement report from user equipment 30 is received, small-cell base station 10 is made for user equipment 30 and being cut
Change decision.Then, in step 307, the transmission of small-cell base station 10 handovers request to macro cell base station 20.
After the handover request from small-cell base station 10 is received, in step 308, macro cell base station 20 sends switching
Request is confirmed to small-cell base station 10.
After the Handover Request Acknowledge from macro cell base station 20 is received, in a step 309, at point C, cell base
It stands and 10 Downlink Control Information for switching command is sent to user equipment 30 by the EPDCCH that is configured.It is macro small due to coming from
The main interference of area base station 20 is eliminated, and therefore, user equipment 30 can be correctly received from small-cell base station 10
For the Downlink Control Information of switching command.
Then, in the step 310, user equipment 30 accesses macro cell base station 20 based on the switching command received.
If there is other users equipment that will be switched to macrocell in cell, then small-cell base station 10 can be should
Other users device configuration is used for the Physical Resource Block of EPDCCH and repeats the above steps.
If there is no the other users equipment to be switched in cell, then small-cell base station 10 can send the second notice extremely
Macro cell base station 20 is used to indicate does not have to be switched user equipment in cell.When receiving from small-cell base station 10
After second notice, macro cell base station 20 can be restored to pass for the data on the Physical Resource Block of EPDCCH distribution in cell
Defeated or recovery is the transimission power on the Physical Resource Block of EPDCCH distribution in cell.
Advantageous, the Physical Resource Block that the PDSCH in cell is used for transmission switching command is also required to be protected.Cell
Base station 10 can further send the information that PDSCH is used for transmission the resource block of switching command in above-mentioned steps 303.It is receiving
After the information of resource block that the PDSCH sent to small-cell base station 10 is used for transmission switching command, macro cell base station 20 can stop
Only switching is used for transmission in PDSCH in the PDSCH data transmissions being used for transmission on the Physical Resource Block of switching command or reduction
Transimission power on the Physical Resource Block of order.
The embodiment of Fig. 3 is suitable for measurement report transmission and switching command transmits the situation having compared with high failure rate.
Fig. 4 shows the flow chart of the method for improvement switching command transmission according to an embodiment of the invention.
With reference to Fig. 4 and with reference to Fig. 2, in step 401, at point B, the user equipment 30 in cell sends third and measures
Report is used to indicate macrocell than cell channel quality is good third bias to small-cell base station 10.The third bias
Can be, such as -3dB.
After the third measurement report from user equipment 30 is received, small-cell base station 10 is made for user equipment 30 and being cut
Change decision.Then, in step 402, EPDCCH is configured for user equipment 30 in small-cell base station 10.
Then, in step 403, small-cell base station 10 send include EPDCCH configuration informations handover request to macrocell
The RRC connection reconfigurations that base station 20 and transmission include EPDCCH configuration informations put message to user equipment 30.The EPDCCH is configured
Information includes transport-type (for example, centralization or distributed), resource block distribution and the configuration of subframe pattern.Advantageous,
EPDCCH configuration informations may further include primary sign.
After the handover request including EPDCCH configuration informations from small-cell base station 10 is received, in step 404,
The data transmission or reduce described that macro cell base station 20 is stopped on the Physical Resource Block distributed in cell for EPDCCH
It is the transimission power on the Physical Resource Block of EPDCCH distribution in cell-of-origin.Advantageous, macro cell base station 20 can send first
Notice is used to indicate macro cell base station 20 and has stopped in cell as the physics money of EPDCCH distribution to small-cell base station 10
Source block transmitting data is used to indicate the reduced physics money distributed in cell for EPDCCH of macro cell base station 20
Transimission power in source block.
Then, in step 405, macro cell base station 20 sends Handover Request Acknowledge to small-cell base station 10.
After the Handover Request Acknowledge from macro cell base station 20 is received, in a step 406, at point C, cell base
It stands and 10 Downlink Control Information for switching command is sent to user equipment 30 by the EPDCCH that is configured.Because macrocell base
20 data transmissions stopped on the Physical Resource Block distributed in cell for EPDCCH of standing are reduced small in the source
It is the transimission power on the Physical Resource Block of EPDCCH distribution in area, therefore, the main interference from macro cell base station 20 is disappeared
It removes, thus user equipment 30 can be correctly received the downlink for switching command from small-cell base station 10 and control letter
Breath.
Then, in step 407, user equipment 30 accesses macro cell base station 20 based on received switching command.
If there is other users equipment that will be switched to macrocell in cell, then small-cell base station 10 can be should
Other users device configuration is used for the Physical Resource Block of EPDCCH and repeats the above steps.
If there is no the other users equipment to be switched in cell, then small-cell base station 10 can send the second notice extremely
Macro cell base station 20 is used to indicate does not have to be switched user equipment in cell.When receiving from small-cell base station 10
After second notice, macro cell base station 20 can be restored to pass for the data on the Physical Resource Block of EPDCCH distribution in cell
Defeated or recovery is the transimission power on the Physical Resource Block of EPDCCH distribution in cell.
Advantageous, the Physical Resource Block that the PDSCH in cell is used for transmission switching command is also required to be protected.Cell
Base station 10 can further send the information that PDSCH is used for transmission the resource block of switching command in above-mentioned steps 403.It is receiving
After the information of resource block that the PDSCH sent to small-cell base station 10 is used for transmission switching command, macro cell base station 20 can stop
Only switching is used for transmission in PDSCH in the PDSCH data transmissions being used for transmission on the Physical Resource Block of switching command or reduction
Transimission power on the Physical Resource Block of order.
The embodiment of Fig. 4 is suitable for only measurement report and transmits the situation having compared with high failure rate.
In a change case of the embodiment of Fig. 4, EPDCCH configuration informations by a new information rather than can also be cut
It changes request message and is sent to macro cell base station 20.
It is understood that it in the present invention, is used for transmission when EPDCCH is configured in cell for switching command
During Downlink Control Information, the interference from macrocell is cell specific reference signal (CRS).If EPDCCH is configured in
Except allowedMeasBandwidth, macrocell can reduce in the block for CRS in the physical resource distributed for EPDCCH
Resource unit (RE) on transimission power, the thus interference in EPDCCH can further be reduced.
It should be noted that above-described embodiment is only exemplary rather than limitation of the present invention.It is any without departing substantially from this hair
The technical solution of bright spirit should all be fallen under the scope of the present invention, this, which is included the use of in different embodiments, occurs not
Same technical characteristic, installation method can be combined, to obtain advantageous effect.In addition, should not will be any attached in claim
Icon note is considered as the involved claim of limitation；One word of " comprising " is not excluded for unlisted in other claims or specification
Device or step.
Claims (13)
1. a kind of method for being used to improve switching command and measurement report transmission accuracy in the source base station of communication network, including
Following steps：
The first measurement report from user equipment is received, first measurement report is used to indicate Target cell and compares cell-of-origin
The first amount of bias that channel quality is good receives the request for being used to be configured EPDCCH from the user equipment；
It is the user device configuration EPDCCH according to first measurement report or the request received；
It sends EPDCCH configuration informations to target BS and sending and includes the RRC connection reconfigurations of EPDCCH configuration informations and put and disappear
For breath to the user equipment, the EPDCCH configuration informations include transport-type, resource block distribution and the configuration of subframe pattern；
Uplink authorization for measurement report is sent to the user equipment by the EPDCCH that is configured；
The second measurement report from the user equipment is received, second measurement report is used to indicate the Target cell
Than channel quality is good for the cell-of-origin the second amount of bias；
Transmission handovers request to the target BS；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
It is 2. according to the method described in claim 1, further comprising the steps of：
The first notice from the target BS is received, first notice is used to indicate the target BS and has stopped
For the resource block transmitting data of EPDCCH distribution or to be used to indicate the target BS reduced in the cell-of-origin
It is in the cell-of-origin
Transimission power on the resource block of EPDCCH distribution.
It is 3. according to the method described in claim 1, further comprising the steps of：
The second notice is sent to the target BS, second notice is used to indicate not to be switched in the cell-of-origin
User equipment.
It is 4. according to the method described in claim 1, further comprising the steps of：
The information that PDSCH is used for transmission to the resource block of switching command is sent to the target BS.
5. according to the method described in claim 1, wherein, first amount of bias is -6dB, second amount of bias is -3dB.
6. a kind of method for being used to improve switching command and measurement report transmission accuracy in the target BS of communication network, packet
Include following steps：
The EPDCCH configuration informations from source base station are received, the EPDCCH configuration informations include transport-type, resource block distributes
It is configured with subframe pattern；
Stop in cell-of-origin be EPDCCH distribution resource block on data transmission or reduce be in the cell-of-origin
Transimission power on the resource block of EPDCCH distribution；
Receive the handover request from the source base station；
Handover Request Acknowledge is sent to the source base station；
The method further includes：
The second notice from the source base station is received, second notice is used to indicate not to be cut in the cell-of-origin
The user equipment changed；
Restore to be the data transmission on the resource block of EPDCCH distribution or recovery in the cell-of-origin in the cell-of-origin
In for EPDCCH distribution resource block on transimission power.
It is 7. according to the method described in claim 6, further comprising the steps of：
The first notice is sent to the source base station, first notice be used to indicate the target BS stopped at it is described
For the resource block transmitting data of EPDCCH distribution or to be used to indicate the target BS reduced described in cell-of-origin
It is the transimission power on the resource block of EPDCCH distribution in cell-of-origin.
It is 8. according to the method described in claim 6, further comprising the steps of：
Receive the information that the PDSCH from source base station is used for transmission the resource block of switching command；
It stops at data transmission that PDSCH is used for transmission on the resource block of switching command or reduces and be used for transmission in PDSCH
Transimission power on the resource block of switching command.
9. a kind of method for being used to improve switching command and measurement report transmission accuracy in the user equipment of communication network, packet
Include following steps：
The first measurement report is sent to source base station, first measurement report is used to indicate channel of the Target cell than cell-of-origin
High-quality first amount of bias sends that the request of EPDCCH is configured to the source base station；
It receives the RRC connection reconfigurations including EPDCCH configuration informations from the source base station and puts message, the EPDCCH configurations
Information includes transport-type, resource block distribution and the configuration of subframe pattern；
The uplink authorization for measurement report from the source base station is received by the EPDCCH being configured；
The second measurement report is sent to the source base station, second measurement report is used to indicate described in the Target cell ratio
The second amount of bias that channel quality is good for cell-of-origin；
The Downlink Control Information for switching command from the source base station is received by the EPDCCH being configured；
Access target BS.
10. a kind of method for being used to improve switching command transmission accuracy in the source base station of communication network, includes the following steps：
The third measurement report from user equipment is received, the third measurement report is used to indicate Target cell and compares cell-of-origin
Third amount of bias that channel quality is good；
It is the user device configuration according to the third measurement report received
EPDCCH；
Send include EPDCCH configuration informations handover request to target BS and transmission include EPDCCH configuration informations
RRC connection reconfigurations put message to the user equipment, and the EPDCCH configuration informations include transport-type, resource block distribution and son
Frame pattern is configured；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
11. according to the method described in claim 10, wherein, the third amount of bias is -3dB.
12. a kind of method for being used to improve switching command transmission accuracy in the user equipment of communication network, including following step
Suddenly：
Third measurement report is sent to source base station, the third measurement report is used to indicate channel of the Target cell than cell-of-origin
High-quality third amount of bias；
It receives the RRC connection reconfigurations including EPDCCH configuration informations from the source base station and puts message, the EPDCCH configurations
Information includes transport-type, resource block distribution and the configuration of subframe pattern；
The Downlink Control Information for switching command from the source base station is received by the EPDCCH being configured；
Access target BS.
13. a kind of method for being used to improve switching command transmission accuracy in the source base station of communication network, includes the following steps：
The third measurement report from user equipment is received, the third measurement report is used to indicate Target cell and compares cell-of-origin
Third amount of bias that channel quality is good；
It is the user device configuration according to the third measurement report received
EPDCCH；
The message for including EPDCCH configuration informations is sent to target BS, transmission includes
The RRC connection reconfigurations of EPDCCH configuration informations put message to the user equipment and transmission and handover request to the target
Base station, the EPDCCH configuration informations include transport-type, resource block distribution and the configuration of subframe pattern；
Receive the Handover Request Acknowledge from the target BS；
Downlink Control Information for switching command is sent to the user equipment by the EPDCCH that is configured.
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| CN105992284A (en) * | 2015-01-29 | 2016-10-05 | 中兴通讯股份有限公司 | Communication processing method and device |
| JP2019083358A (en) * | 2016-03-17 | 2019-05-30 | シャープ株式会社 | Terminal device, base station device, communication method, and integrated circuit |
| CN107682899A (en) * | 2016-08-01 | 2018-02-09 | 中兴通讯股份有限公司 | Switching handling method and device |
| CN107509209A (en) * | 2017-08-10 | 2017-12-22 | 中国联合网络通信集团有限公司 | A kind of method and device for optimizing heterogeneous network efficiency |
| CN110100476B (en) * | 2017-11-29 | 2020-05-12 | Oppo广东移动通信有限公司 | Method and device for signal transmission and network device |
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| CN103096374A (en) * | 2011-11-07 | 2013-05-08 | 上海贝尔股份有限公司 | Method used for carrying out interference rejection on user equipment in heterogeneous network and device |
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| Title |
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| Discussion on the Main Cause of Handover Failure;ITRI;《3GPP TSG-RAN WG2 #81bis》;20130419;全文 * |
| Report of 3GPP TSG RAN WG2 meeting #81bis;ETSI MCC;《Report of 3GPP TSG RAN WG2 meeting #81bis》;20130524;全文 * |
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