CN104284377A - Method for improving switching command transmission and/or measurement report transmission in communication network - Google Patents
Method for improving switching command transmission and/or measurement report transmission in communication network Download PDFInfo
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- CN104284377A CN104284377A CN201310285793.1A CN201310285793A CN104284377A CN 104284377 A CN104284377 A CN 104284377A CN 201310285793 A CN201310285793 A CN 201310285793A CN 104284377 A CN104284377 A CN 104284377A
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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
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- 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
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- 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
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for improving switching command transmission and/or measurement report transmission in a communication network. According to the method, an EPDCCH is configured in a pico cell and used for transmitting downlink control information used for a switching command or uplink authorization used for a measurement report. Correspondingly, in a macro cell, data transmission of a resource block distributed to the EPDCCH in the pico cell stops, or the transmission power of the resource block distributed to the EPDCCH in the pico cell stops. Thus, the main interference to transmission of the downlink control information or uplink authorization in the pico cell from the macro cell is eliminated, and the mobility can be greatly improved.
Description
Technical field
The present invention relates to communication network, particularly relating in communication network for improving the method for switching command transmission and/or measurement report transmission.
Background technology
3GPP RAN2 has realized that the mobility problem in heterogeneous network by much emulation.According to TR36.839vb10, following form shows average handover failure rate result.
Table 1: the average handover failure rate emulated data in state 2 and state 3
And average total handover failure rate emulated data
Can find according to upper table, the handover failure rate of state 2 is much larger than the handover failure rate of state 3.In state 2, subscriber equipment still keeps being connected with cell-of-origin, but the channel quality of cell-of-origin bad, thus make subscriber equipment cannot send measurement report or receive switching command.In state 3, subscriber equipment has received the switching command being connected to Target cell, but the channel quality of Target cell bad, thus make subscriber equipment to access Target cell.
Handoff failure in state 2 is mainly owing to switching command bust this or measurement report bust this.Especially, for small-cell (pico cell) to the handoff scenario of macrocell (macro cell), the subscriber equipment being positioned at edge, small-cell, source will be subjected to from the stronger interference in target macro community, and this will cause subscriber equipment cannot receive switching command or will cause subscriber equipment cannot receive uplink authorization (UL grant) thus send measurement report to small-cell, source.
Summary of the invention
Central scope of the present invention is to use EPDCCH to transmit the Downlink Control Information for switching command or the uplink authorization for measurement report.
An embodiment according to a first aspect of the invention, provide a kind of in the source base station of communication network for improve switching command and measurement report transmission accuracy method, comprise the following steps:
-receiving the first measurement report from subscriber equipment, described first measurement report is used to indicate channel quality first amount of bias of Target cell than cell-of-origin, or receives the request for configuring EPDCCH from described subscriber equipment;
-according to described first measurement report received or described request, be described user device configuration EPDCCH;
-send EPDCCH configuration information to target BS, and send the RRC connection reconfiguration message extremely described subscriber equipment comprising EPDCCH configuration information, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the uplink authorization of configured EPDCCH transmission for measurement report to described subscriber equipment;
-receiving the second measurement report from described subscriber equipment, described second measurement report is used to indicate channel quality second amount of bias of described Target cell than described cell-of-origin;
-transmission handovers request to described target BS;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
Favourable, said method is further comprising the steps of:
-receive from described target BS first notice, described first notice be used to indicate described target BS stopped in described cell-of-origin for EPDCCH distribute Resource Block transmitting data, or be used to indicate described target BS reduced in described cell-of-origin be EPDCCH distribution Resource Block on through-put power.
Favourable, said method is further comprising the steps of:
-sending the second notice to described target BS, described second notice is used to indicate does not have to be switched subscriber equipment in described cell-of-origin.
Favourable, said method is further comprising the steps of:
-the information that PDSCH is used for the Resource Block transmitting switching command is sent to described target BS.
Favourable, described first amount of bias is-6dB, and described second amount of bias is-3dB.
Another embodiment according to a first aspect of the invention, provide a kind of in the target BS of communication network for improve switching command and measurement report transmission accuracy method, comprise the following steps:
-receiving EPDCCH configuration information from source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-receive handover request from described source base station;
-send Handover Request Acknowledge to described source base station.
Favourable, said method is further comprising the steps of:
-send the first notice to described source base station, described first notice be used to indicate described target BS stopped in described cell-of-origin for EPDCCH distribute Resource Block transmitting data, or be used to indicate described target BS reduced in described cell-of-origin be EPDCCH distribution Resource Block on through-put power.
Favourable, said method is further comprising the steps of:
-receiving the second notice from described source base station, described second notice is used to indicate does not have to be switched subscriber equipment in described cell-of-origin;
-recover to be the transfer of data on the Resource Block of EPDCCH distribution in described cell-of-origin, or recover to be the through-put power on the Resource Block of EPDCCH distribution in described cell-of-origin.
Favourable, said method is further comprising the steps of:
-receive PDSCH from source base station for transmitting the information of the Resource Block of switching command;
-stop at the transfer of data of PDSCH on the Resource Block transmitting switching command, or reduce in the through-put power of PDSCH on the Resource Block transmitting switching command.
Another embodiment according to a first aspect of the invention, provide a kind of in the subscriber equipment of communication network for improve switching command and measurement report transmission accuracy method, comprise the following steps:
-sending the first measurement report to source base station, described first measurement report is used to indicate channel quality first amount of bias of Target cell than cell-of-origin, or the request sent for configuring EPDCCH is to described source base station;
-the RRC comprising EPDCCH configuration information received from described source base station connects reconfiguration message, and described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the uplink authorization for measurement report of configured EPDCCH reception from described source base station;
-sending the second measurement report to described source base station, described second measurement report is used to indicate channel quality second amount of bias of described Target cell than described cell-of-origin;
-pass through the Downlink Control Information for switching command of configured EPDCCH reception from described source base station;
-access target BS.
An embodiment according to a second aspect of the invention, providing a kind of method transmitting accuracy in the source base station of communication network for improving switching command, comprising the following steps:
-receiving the 3rd measurement report from subscriber equipment, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-according to described 3rd measurement report received, be described user device configuration EPDCCH;
-send comprise EPDCCH configuration information handover request to target BS, and sending the RRC connection reconfiguration message extremely described subscriber equipment comprising EPDCCH configuration information, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
Favourable, described 3rd amount of bias is-3dB.
Another embodiment according to a second aspect of the invention, providing a kind of method transmitting accuracy in the target BS of communication network for improving switching command, comprising the following steps:
-receiving the handover request comprising EPDCCH configuration information from source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-send Handover Request Acknowledge to described source base station.
Another embodiment according to a second aspect of the invention, providing a kind of method transmitting accuracy in the subscriber equipment of communication network for improving switching command, comprising the following steps:
-sending the 3rd measurement report to source base station, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-the RRC comprising EPDCCH configuration information received from described source base station connects reconfiguration message, and described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the Downlink Control Information for switching command of configured EPDCCH reception from described source base station;
-access target BS.
An embodiment according to a third aspect of the invention we, providing a kind of method transmitting accuracy in the source base station of communication network for improving switching command, comprising the following steps:
-receiving the 3rd measurement report from subscriber equipment, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-according to described 3rd measurement report received, be described user device configuration EPDCCH;
-transmission comprises the message of EPDCCH configuration information to target BS, send the RRC connection reconfiguration message comprising EPDCCH configuration information and handover request to described target BS to described subscriber equipment and transmission, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
Another embodiment according to a third aspect of the invention we, providing a kind of method transmitting accuracy in the target BS of communication network for improving switching command, comprising the following steps:
-receive from source base station the message comprising EPDCCH configuration information and receive from the handover request of described source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-send Handover Request Acknowledge to described source base station.
Favourable, communication network of the present invention can be such as heterogeneous network.
Favourable, cell-of-origin of the present invention can be such as small-cell, and Target cell can be such as macrocell.
By technical scheme of the present invention, in small-cell, be configured with EPDCCH for the Downlink Control Information of transmission for switching command or the uplink authorization for measurement report.Accordingly, in macrocell, will the transfer of data on the Resource Block being EPDCCH distribution be stopped in small-cell, or reduce in small-cell the through-put power on the Resource Block being EPDCCH distribution.Therefore, for the transmission of the Downlink Control Information in small-cell or the transmission of uplink authorization, the main interference from macrocell has been eliminated, therefore, mobility performance can be greatly improved, because subscriber equipment successfully can send measurement report and correct reception switching command.
Various aspects of the present invention are more clear by the explanation by specific embodiment hereinafter.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the subframe structure schematic diagram in small-cell according to an embodiment of the invention;
Fig. 2 shows the handoff procedure schematic diagram of small-cell according to an embodiment of the invention to macrocell;
Fig. 3 shows the flow chart improving the method for switching command transmission and measurement report transmission according to an embodiment of the invention; And
Fig. 4 shows the flow chart improving the method for switching command transmission according to an embodiment of the invention.
In the drawings, same or similar Reference numeral represents identical or corresponding parts or feature.
Embodiment
Hereinafter, be only exemplary purpose, be small-cell with cell-of-origin and Target cell for macrocell for example embodiment is to various aspects of the present invention described in detail.
In order to realize object of the present invention, as shown in Figure 1, in small-cell, EPDCCH is configured for the Downlink Control Information of transmission for switching command and/or the uplink authorization for measurement report.With reference to Fig. 1, a subframe is made up of two time slots, is respectively the first time slot and the second time slot, wherein,
represent PDCCH,
represent PDSCH, and
represent EPDCCH.Favourable, the Physical Resource Block for EPDCCH can be semi-static, this means that the Physical Resource Block for EPDCCH can be shared by the multiple subscriber equipmenies in small-cell.
Fig. 2 shows the handoff procedure of small-cell to macrocell.Small-cell and macrocell are positioned at identical frequency.
With reference to Fig. 2, at an A place, subscriber equipment sends measurement report and is used to indicate channel quality first Configuration Values of adjacent cell (also namely, macrocell) than Serving cell (also namely, small-cell), such as, and-6dB.
At a B place, subscriber equipment sends measurement report and is used to indicate channel quality second Configuration Values of adjacent cell (also namely, macrocell) than Serving cell (also namely, small-cell), such as, and-3dB.Then, small-cell base station will trigger handoff procedure.
At a C place, subscriber equipment receives the switching command from small-cell base station.
Fig. 3 shows the flow chart improving the method for switching command transmission and measurement report transmission according to an embodiment of the invention.
With reference to Fig. 3 composition graphs 2, in step 301, at an A place, the subscriber equipment 30 in small-cell sends the first measurement report to small-cell base station 10, is used to indicate channel quality first amount of bias of macrocell than small-cell; Or subscriber equipment 30 sends request for configuring EPDCCH to small-cell base station 10, because this subscriber equipment 30 is subjected to from the stronger interference of macrocell.This first amount of bias can be, such as-6dB.
Receive from subscriber equipment 30 the first measurement report or request after, in step 302, small-cell base station 10 configures EPDCCH for subscriber equipment 30.Concrete, based on the first measurement report received from subscriber equipment 30, small-cell base station 10 is known this subscriber equipment 30 and may will be switched, therefore, small-cell base station 10 configures EPDCCH for subscriber equipment 30, correctly can transmit the Downlink Control Information for switching command and the uplink authorization for measurement report with small-cell base station 10 after guaranteeing.
Then, in step 302, small-cell base station 10 sends EPDCCH configuration information to macro cell base station 20, and transmission comprises the RRC connection reconfiguration message of EPDCCH configuration information to subscriber equipment 30.This EPDCCH configuration information comprises transport-type (such as, centralized or distributed), resource block assignments and subframe pattern arrangement.Favourable, EPDCCH configuration information may further include primary sign.
After receiving the EPDCCH configuration information from small-cell base station 10, macro cell base station 20 stops in small-cell the transfer of data on the Physical Resource Block being EPDCCH distribution, or reduces in described cell-of-origin the through-put power on the Physical Resource Block being EPDCCH distribution.Favourable, 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 small-cell be EPDCCH distribute Physical Resource Block transmitting data, or be used to indicate macro cell base station 20 reduced in small-cell for EPDCCH distribution Physical Resource Block on through-put power.
Then, in step 305, small-cell base station 10 passes through the uplink authorization of configured EPDCCH transmission for side amount report to subscriber equipment 30.Also be, small-cell base station 10 send on the Physical Resource Block distributed for EPDCCH be used for measurement report uplink authorization to subscriber equipment 30 (according to current standard, small-cell base station 10 can know subscriber equipment has the upstream datas such as such as measurement report to need to send).Because it is the transfer of data on the Physical Resource Block of EPDCCH distribution that macro cell base station 20 has stopped in small-cell, or reduce in described cell-of-origin is the through-put power on the Physical Resource Block of EPDCCH distribution, therefore, main interference from macro cell base station 20 is eliminated, and subscriber equipment 30 correctly can receive the uplink authorization for measurement report from small-cell base station 10 thus.
When receive from small-cell base station 10 for the uplink authorization of measurement report after, in step 308, at a B place, subscriber equipment 30 sends the second measurement report to small-cell base station 10, is used to indicate channel quality second amount of bias of macrocell than small-cell.This second amount of bias can be, such as-3dB.
After receiving the second measurement report from subscriber equipment 30, small-cell base station 10 is made switching for subscriber equipment 30 and is determined.Then, in step 307, small-cell base station 10 sends and handovers request to macro cell base station 20.
After receiving the handover request from small-cell base station 10, in step 308, macro cell base station 20 sends Handover Request Acknowledge to small-cell base station 10.
After receiving the Handover Request Acknowledge from macro cell base station 20, in a step 309, at a C place, small-cell base station 10 passes through the Downlink Control Information of configured EPDCCH transmission for switching command to subscriber equipment 30.Because the main interference from macro cell base station 20 has been eliminated, therefore, subscriber equipment 30 correctly can receive the Downlink Control Information for switching command from small-cell base station 10.
Then, in the step 310, subscriber equipment 30 is based on the switching command access macro cell base station 20 received.
If also have other subscriber equipmenies to be switched to macrocell in small-cell, so small-cell base station 10 can be used for the Physical Resource Block of EPDCCH for this other user device configuration and repeat above-mentioned steps.
If do not have other subscriber equipmenies to be switched in small-cell, so small-cell base station 10 can send the second notice and is used to indicate to macro cell base station 20 do not have to be switched subscriber equipment in small-cell.After receiving the second notice from small-cell base station 10, macro cell base station 20 can be recovered to be the transfer of data on the Physical Resource Block of EPDCCH distribution in small-cell, or recovers to be the through-put power on the Physical Resource Block of EPDCCH distribution in small-cell.
Favourable, the PDSCH in small-cell also needs protected for the Physical Resource Block transmitting switching command.Small-cell base station 10 can send PDSCH further for transmitting the information of the Resource Block of switching command in above-mentioned steps 303.Receive PDSCH that small-cell base station 10 sends for transmit the Resource Block of switching command information after, macro cell base station 20 can stop at the transfer of data of PDSCH on the Physical Resource Block transmitting switching command, or reduces in the through-put power of PDSCH on the Physical Resource Block transmitting switching command.
The embodiment of Fig. 3 is applicable to measurement report transmission and switching command transmits the situation all had compared with high failure rate.
Fig. 4 shows the flow chart improving the method for switching command transmission according to an embodiment of the invention.
With reference to Fig. 4 composition graphs 2, in step 401, at a B place, the subscriber equipment 30 in small-cell sends the 3rd measurement report to small-cell base station 10, is used to indicate channel quality three bias of macrocell than small-cell.3rd bias can be, such as-3dB.
After receiving the 3rd measurement report from subscriber equipment 30, small-cell base station 10 is made switching for subscriber equipment 30 and is determined.Then, in step 402, small-cell base station 10 configures EPDCCH for subscriber equipment 30.
Then, in step 403, small-cell base station 10 send comprise EPDCCH configuration information handover request to macro cell base station 20, and send the RRC comprising EPDCCH configuration information and connect reconfiguration message to subscriber equipment 30.This EPDCCH configuration information comprises transport-type (such as, centralized or distributed), resource block assignments and subframe pattern arrangement.Favourable, EPDCCH configuration information may further include primary sign.
Receive from small-cell base station 10 comprise the handover request of EPDCCH configuration information after, in step 404, macro cell base station 20 stops in small-cell the transfer of data on the Physical Resource Block being EPDCCH distribution, or reduces in described cell-of-origin the through-put power on the Physical Resource Block being EPDCCH distribution.Favourable, 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 small-cell be EPDCCH distribute Physical Resource Block transmitting data, or be used to indicate macro cell base station 20 reduced in small-cell for EPDCCH distribution Physical Resource Block on through-put power.
Then, in step 405, macro cell base station 20 sends Handover Request Acknowledge to small-cell base station 10.
After receiving the Handover Request Acknowledge from macro cell base station 20, in a step 406, at a C place, small-cell base station 10 passes through the Downlink Control Information of configured EPDCCH transmission for switching command to subscriber equipment 30.Because it is the transfer of data on the Physical Resource Block of EPDCCH distribution that macro cell base station 20 has stopped in small-cell, or reduce in described cell-of-origin is the through-put power on the Physical Resource Block of EPDCCH distribution, therefore, main interference from macro cell base station 20 is eliminated, and subscriber equipment 30 correctly can receive the Downlink Control Information for switching command from small-cell base station 10 thus.
Then, in step 407, subscriber equipment 30, based on received switching command, accesses macro cell base station 20.
If also have other subscriber equipmenies to be switched to macrocell in small-cell, so small-cell base station 10 can be used for the Physical Resource Block of EPDCCH for this other user device configuration and repeat above-mentioned steps.
If do not have other subscriber equipmenies to be switched in small-cell, so small-cell base station 10 can send the second notice and is used to indicate to macro cell base station 20 do not have to be switched subscriber equipment in small-cell.After receiving the second notice from small-cell base station 10, macro cell base station 20 can be recovered to be the transfer of data on the Physical Resource Block of EPDCCH distribution in small-cell, or recovers to be the through-put power on the Physical Resource Block of EPDCCH distribution in small-cell.
Favourable, the PDSCH in small-cell also needs protected for the Physical Resource Block transmitting switching command.Small-cell base station 10 can send PDSCH further for transmitting the information of the Resource Block of switching command in above-mentioned steps 403.Receive PDSCH that small-cell base station 10 sends for transmit the Resource Block of switching command information after, macro cell base station 20 can stop at the transfer of data of PDSCH on the Physical Resource Block transmitting switching command, or reduces in the through-put power of PDSCH on the Physical Resource Block transmitting switching command.
The embodiment of Fig. 4 is applicable to only measurement report transmission the situation compared with high failure rate.
In a change case of the embodiment of Fig. 4, EPDCCH configuration information also can by a new information but not handover request message is sent to macro cell base station 20.
Be understandable that, in the present invention, when configuring EPDCCH for transmitting the Downlink Control Information for switching command in small-cell, the interference from macrocell is cell specific reference signal (CRS).If EPDCCH is configured in outside allowedMeasBandwidth, macrocell can reduce the through-put power on the Resource Unit for CRS (RE) in the Physical Resource Block distributed for EPDCCH, and the interference thus in EPDCCH can be reduced further.
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention.Any technical scheme not deviating from spirit of the present invention all should fall within protection scope of the present invention, and this comprises the different technologies feature that use occurs in different embodiments, and installation method can combine, to obtain beneficial effect.In addition, any Reference numeral in claim should be considered as the claim involved by restriction; " comprise " word and do not get rid of device unlisted in other claims or specification or step.
Claims (16)
1. in the source base station of communication network for improve switching command and measurement report transmission accuracy a method, comprise the following steps:
-receiving the first measurement report from subscriber equipment, described first measurement report is used to indicate channel quality first amount of bias of Target cell than cell-of-origin, or receives the request for configuring EPDCCH from described subscriber equipment;
-according to described first measurement report received or described request, be described user device configuration EPDCCH;
-send EPDCCH configuration information to target BS, and send the RRC connection reconfiguration message extremely described subscriber equipment comprising EPDCCH configuration information, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the uplink authorization of configured EPDCCH transmission for measurement report to described subscriber equipment;
-receiving the second measurement report from described subscriber equipment, described second measurement report is used to indicate channel quality second amount of bias of described Target cell than described cell-of-origin;
-transmission handovers request to described target BS;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
2. method according to claim 1, further comprising the steps of:
-receive from described target BS first notice, described first notice be used to indicate described target BS stopped in described cell-of-origin for EPDCCH distribute Resource Block transmitting data, or be used to indicate described target BS reduced in described cell-of-origin be EPDCCH distribution Resource Block on through-put power.
3. method according to claim 1, further comprising the steps of:
-sending the second notice to described target BS, described second notice is used to indicate does not have to be switched subscriber equipment in described cell-of-origin.
4. method according to claim 1, further comprising the steps of:
-the information that PDSCH is used for the Resource Block transmitting switching command is sent to described target BS.
5. method according to claim 1, wherein, described first amount of bias is-6dB, and described second amount of bias is-3dB.
6. in the target BS of communication network for improve switching command and measurement report transmission accuracy a method, comprise the following steps:
-receiving EPDCCH configuration information from source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-receive handover request from described source base station;
-send Handover Request Acknowledge to described source base station.
7. method according to claim 6, further comprising the steps of:
-send the first notice to described source base station, described first notice be used to indicate described target BS stopped in described cell-of-origin for EPDCCH distribute Resource Block transmitting data, or be used to indicate described target BS reduced in described cell-of-origin be EPDCCH distribution Resource Block on through-put power.
8. method according to claim 6, further comprising the steps of:
-receiving the second notice from described source base station, described second notice is used to indicate does not have to be switched subscriber equipment in described cell-of-origin;
-recover to be the transfer of data on the Resource Block of EPDCCH distribution in described cell-of-origin, or recover to be the through-put power on the Resource Block of EPDCCH distribution in described cell-of-origin.
9. method according to claim 6, further comprising the steps of:
-receive PDSCH from source base station for transmitting the information of the Resource Block of switching command;
-stop at the transfer of data of PDSCH on the Resource Block transmitting switching command, or reduce in the through-put power of PDSCH on the Resource Block transmitting switching command.
10. in the subscriber equipment of communication network for improve switching command and measurement report transmission accuracy a method, comprise the following steps:
-sending the first measurement report to source base station, described first measurement report is used to indicate channel quality first amount of bias of Target cell than cell-of-origin, or the request sent for configuring EPDCCH is to described source base station;
-the RRC comprising EPDCCH configuration information received from described source base station connects reconfiguration message, and described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the uplink authorization for measurement report of configured EPDCCH reception from described source base station;
-sending the second measurement report to described source base station, described second measurement report is used to indicate channel quality second amount of bias of described Target cell than described cell-of-origin;
-pass through the Downlink Control Information for switching command of configured EPDCCH reception from described source base station;
-access target BS.
11. 1 kinds in the source base station of communication network for improve switching command transmission accuracy method, comprise the following steps:
-receiving the 3rd measurement report from subscriber equipment, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-according to described 3rd measurement report received, be described user device configuration EPDCCH;
-send comprise EPDCCH configuration information handover request to target BS, and sending the RRC connection reconfiguration message extremely described subscriber equipment comprising EPDCCH configuration information, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
12. methods according to claim 11, wherein, described 3rd amount of bias is-3dB.
13. 1 kinds in the target BS of communication network for improve switching command transmission accuracy method, comprise the following steps:
-receiving the handover request comprising EPDCCH configuration information from source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-send Handover Request Acknowledge to described source base station.
14. 1 kinds in the subscriber equipment of communication network for improve switching command transmission accuracy method, comprise the following steps:
-sending the 3rd measurement report to source base station, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-the RRC comprising EPDCCH configuration information received from described source base station connects reconfiguration message, and described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-pass through the Downlink Control Information for switching command of configured EPDCCH reception from described source base station;
-access target BS.
15. 1 kinds in the source base station of communication network for improve switching command transmission accuracy method, comprise the following steps:
-receiving the 3rd measurement report from subscriber equipment, described 3rd measurement report is used to indicate channel quality three amount of bias of Target cell than cell-of-origin;
-according to described 3rd measurement report received, be described user device configuration EPDCCH;
-transmission comprises the message of EPDCCH configuration information to target BS, send the RRC connection reconfiguration message comprising EPDCCH configuration information and handover request to described target BS to described subscriber equipment and transmission, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-receive Handover Request Acknowledge from described target BS;
-pass through the Downlink Control Information of configured EPDCCH transmission for switching command to described subscriber equipment.
16. 1 kinds in the target BS of communication network for improve switching command transmission accuracy method, comprise the following steps:
-receive from source base station the message comprising EPDCCH configuration information and receive from the handover request of described source base station, described EPDCCH configuration information comprises transport-type, resource block assignments and subframe pattern arrangement;
-stop in cell-of-origin be EPDCCH distribute Resource Block on transfer of data, or reduce in described cell-of-origin for EPDCCH distribution Resource Block on through-put power;
-send Handover Request Acknowledge to described source base station.
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| CN108781395A (en) * | 2016-03-17 | 2018-11-09 | 夏普株式会社 | Terminal installation, base station apparatus and communication means |
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| CN104284377B (en) | 2018-06-26 |
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