CN103945480B - Eliminate the method, apparatus and system disturbed in heterogeneous network between picocell and highspeed user's equipment - Google Patents
Eliminate the method, apparatus and system disturbed in heterogeneous network between picocell and highspeed user's equipment Download PDFInfo
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- CN103945480B CN103945480B CN201310017839.1A CN201310017839A CN103945480B CN 103945480 B CN103945480 B CN 103945480B CN 201310017839 A CN201310017839 A CN 201310017839A CN 103945480 B CN103945480 B CN 103945480B
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Abstract
It is an object of the invention to provide the method, apparatus and system disturbed between a kind of elimination picocell and highspeed user's equipment for heterogeneous network.Wherein, the heterogeneous network includes macrocell and picocell, and both have geographical same overlay area, when highspeed user's equipment corresponding to the macrocell enters the coverage of the picocell, the picocell is that highspeed user's device configuration retains resource, to eliminate the interference between the picocell and highspeed user's equipment；The macrocell is communicated in the reservation resource with highspeed user's equipment.Picocell retain resource on macrocell coordination come eliminate for/in the macrocell highspeed user's equipment interference, avoid the frequent switching in heterogeneous network, reduce the quantity of aerial signaling, so as to improve the efficiency of heterogeneous network, and the continuity of highspeed user's device service is ensure that as far as possible so that highspeed user's equipment obtains more preferable experience.
Description
Technical field
The present invention relates to mobile communication technology field, more particularly to a kind of elimination picocell for heterogeneous network and height
The technology disturbed between fast user equipment.
Background technology
Recently, heterogeneous network (HetNet, heterogeneous network) is in 3GPP LTE-A (Long Term
Evolution Advanced) in by extensive discussions, for improving systematic function.(small cell) has existed for small cell
It is widely accepted in LTE, it can significantly improve cell capacity as a kind of promising technology.Also, the business of small cell
Industry is applied equally attractive to global operator.
However, due to adding small cell in system, the mobile management of the different coverages of cell in heterogeneous network
On cause the problem of serious.The introducing of small cell, such as picocell (pico cell), will produce extra interference, and
Because the coverage of picocell is smaller, frequent switching can be also caused.
At present, when the user equipment of activation is moved to picocell from macrocell (macro cell), if its satisfaction is cut
Condition is changed, then can trigger normal handoff procedure, the handoff procedure is defined by 3GPPTS 36.300.Also, by a series of
RRC signaling, X2 signalings and the signalings of S 1, the path of user plane is by gateway (SGW, Serving Gateway) from macrocell
Switch to picocell.
Similarly, when the user equipment of the activation is moved to macrocell from picocell, another handoff procedure can also be performed.
Also, again by above-mentioned aerial signaling, the path of user plane switches back to macrocell by SGW from picocell.
To sum up, because picocell has relatively small coverage, currently existing scheme will produce frequent switching, lead
Cause more aerial signalings and worse Consumer's Experience.Therefore, for heterogeneous network scene, it is necessary to more effective solution.
The content of the invention
To avoid unnecessary aerial switching and ping-pong, reach common understanding at present：When user equipment is close to small-sized small
Qu Shi, highspeed user's equipment should not be switched to the small cell.If however, not switching to small cell, highspeed user sets
It is standby when by the small cell, may be by very strong interference.It is an object of the invention to provide a kind of for heterogeneous network
Eliminate the method, apparatus and system disturbed between picocell and highspeed user's equipment.
According to an aspect of the invention, there is provided a kind of elimination picocell for heterogeneous network is set with highspeed user
The method disturbed between standby, wherein, the heterogeneous network includes macrocell and picocell, and both have the geographical same area of coverage
Domain, highspeed user's equipment include the user equipment that its speed exceedes predetermined threshold, wherein, this method includes：
A is when highspeed user's equipment corresponding to the macrocell enters the coverage of the picocell, the picocell
Retain resource for highspeed user's device configuration, to eliminate the interference between the picocell and highspeed user's equipment；
The b macrocells are communicated in the reservation resource with highspeed user's equipment.
According to another aspect of the present invention, additionally provide a kind of elimination for being used for picocell in heterogeneous network its with height
The device disturbed between fast user equipment, wherein, the heterogeneous network includes the picocell and had with it geographical with covering
The macrocell in region, highspeed user's equipment include the user equipment that its speed exceedes predetermined threshold, wherein, the device bag
Include：
Device for allocating resources, for entering the covering model of the picocell when highspeed user's equipment corresponding to the macrocell
When enclosing, retain resource for highspeed user's device configuration, to eliminate between the picocell and highspeed user's equipment
Interference；
Resource instruction device, for sending the configured information on the reservation resource to the macrocell, with grand small by this
Area is communicated in the reservation resource with highspeed user's equipment.
According to a further aspect of the invention, a kind of auxiliary picocell for being used for macrocell in heterogeneous network is additionally provided
Its device disturbed between highspeed user's equipment is eliminated, wherein, the heterogeneous network includes the macrocell and has ground with it
The picocell with overlay area is managed, highspeed user's equipment includes the user equipment that its speed exceedes predetermined threshold, wherein,
The device includes：
R-T unit is indicated, for entering the covering model of the picocell when highspeed user's equipment corresponding to the macrocell
When enclosing, the configured information of its reservation resource configured by highspeed user's equipment is received from the picocell；
Communicator, for being communicated in the reservation resource with highspeed user's equipment.
According to a further aspect of the invention, a kind of elimination picocell for heterogeneous network is additionally provided with using at a high speed
The system disturbed between the equipment of family, wherein, the heterogeneous network includes macrocell and picocell, and both have geographical same covering
Region, highspeed user's equipment include the user equipment that its speed exceedes predetermined threshold, wherein, the system includes such as foregoing
According to another aspect of the invention be used for picocell in heterogeneous network eliminate its dress for being disturbed between highspeed user's equipment
Put, and as it is foregoing according to another aspect of the present invention be used for heterogeneous network in macrocell auxiliary picocell eliminate its with
The device disturbed between highspeed user's equipment.
Compared with prior art, the present invention provides a kind of effective solution for the movement of heterogeneous network high speed user equipment
Certainly scheme, wherein, picocell on resource is retained with macrocell coordination come eliminate for/in the macrocell highspeed user
The interference of equipment.Present invention, avoiding the frequent switching in heterogeneous network, reduces the quantity of aerial signaling, different so as to improve
The efficiency of network forming network, and the continuity of highspeed user's device service is ensure that as far as possible so that highspeed user's equipment obtains more
Good experience.
Brief 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 upon：
Fig. 1 shows an exemplary application scene according to the present invention；
Fig. 2 shows that macrocell coordinates with picocell to eliminate in heterogeneous network in accordance with a preferred embodiment of the present invention
The method flow diagram disturbed between picocell and highspeed user's equipment；
Fig. 3 shows that macrocell coordinates with picocell to disappear in the heterogeneous network according to another preferred embodiment of the present invention
Except the method flow diagram disturbed between picocell and highspeed user's equipment；
Fig. 4 shows to coordinate in heterogeneous network in accordance with a preferred embodiment of the present invention to eliminate picocell with using at a high speed
The macrocell and the schematic device of the base station of picocell disturbed between the equipment of family.
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Based on existing handoff procedure, a kind of improved solution is proposed in the present invention, to realize heterogeneous network scene
In effective mobile management.Pass through the situation of picocell for one or more user equipmenies for belonging to macrocell, except inciting somebody to action
These user equipmenies switch to the scheme of the picocell from the macrocell, and the invention provides another scheme：These users
Equipment still provides service by the macrocell in some specific resources, while the picocell will retain these resources to eliminate it
It is right on downlink/uplink/to be disturbed from caused by these user equipmenies.
As shown in figure 1, heterogeneous network includes macrocell 10 and picocell 20, and both have geographical same overlay area.
Here, geographical mean that macrocell 10 has covering identical overlay area with picocell 20 on geographical position with covering.With
Family equipment 3 and 4 corresponds to macrocell 10, i.e., user equipment 3 and 4 is in the coverage of macrocell 10, and its mobile route will
By picocell 20.
Here, it can judge whether user equipment 3 and 4 belongs to highspeed user's equipment by setting a predetermined threshold.Also,
The predetermined threshold can be adjusted according to specific application scenarios.Macrocell 10 can obtain user equipment in several ways
Mobile status information, such as, the mobile status information of user equipment can be reported from user equipment to macrocell 10, or by grand
Cell 10 obtains according to other modes, is such as estimated according to sounding reference signal.For example, macrocell 10 configures user equipment
Measurement report, add an extra mobile threshold value wherein and carry out assisting user equipment and judge its mobile status, such as transport at a high speed
Dynamic equipment or low-speed motion equipment；Then, when user equipment is to 10 reporting measurement reports of macrocell, add wherein on its shifting
The information of dynamic state.Hereinafter, it is for ease of illustration of the invention, highspeed user's equipment is belonged to user equipment 3 more and illustrated, and will
It is labeled as highspeed user's equipment 3.
When highspeed user's equipment 3 enters the coverage of picocell 20, the picocell 20 is that the highspeed user sets
Standby 3 configuration retains resource (reserved resource), to eliminate between the picocell 20 and highspeed user's equipment 3
Interference.Here, the resource use patterns (resource utilization pattern) for retaining resource can have a variety of granularities,
Such as subframe (subframe) Land use models.In view of service quality (QoS, Quality of Service) and other factors
In the case of, smaller granularity can also be used, such as resource block (RB, Resource Block) Land use models.Utilization of resources mould
Formula can be formed with two parts, including the resource use patterns of downlink and the resource use patterns of up-link.Herein, it is
It is easy to the explanation present invention, is illustrated more with subframe Land use models.
Macrocell 10 is communicated in the reservation resource with highspeed user's equipment 3.For example, macrocell 10 passes through RRC
Signaling is reconfigured to highspeed user's equipment 3, and highspeed user's equipment 3 is scheduled in the reservation resource.
For retaining subframe, on the uplink, picocell 20 will not transmit any wireless signal, while macrocell 10
It can be scheduled on subframe is retained to highspeed user's equipment 3 and transmit data, to eliminate picocell 20 to highspeed user
Interference caused by equipment 3,；On uplink, picocell 20 can equally retain specific resources, and highspeed user's equipment 3 can
To send upstream data to macrocell 10 on resource is retained, to eliminate interference of the highspeed user's equipment 3 to picocell 20.From
And interference of the picocell 20 with highspeed user's equipment 3 on Uplink/Downlink can be eliminated.For other subframes,
Picocell 20 still can normal consistency.
Then, when highspeed user's equipment 3 leaves the coverage of picocell 20, macrocell 10 will notify picocell
20, to stop retaining resource for the configuration of highspeed user's equipment 3.
Fig. 2 be according to the method flow diagram of a preferred embodiment of the present invention, show in heterogeneous network macrocell with it is micro-
Microcell coordinates to eliminate the process disturbed between picocell and highspeed user's equipment.
Cooperation refers to Fig. 1, and picocell 20 is within the coverage of macrocell 10, i.e., both have identical geographical
Overlay area.Highspeed user's equipment 3 is in the coverage of macrocell 10, and its mobile route will pass through picocell 20.
In step S201a, macrocell 10 is to the user device configuration measurement parameter in its coverage, these measurement ginsengs
Number can help to the function of controlling the connection of user equipment mobile.In step S201b, when meeting predetermined rule, these
User equipment is triggered to the measurement parameter configured according to macrocell 10, and corresponding measurement report is reported to macrocell 10.
In step S202, macrocell 10 is according to measurement report and RRM (the Radio Resource of user equipment to report
Management, RRM) information, switching is made to respective user equipment and is determined.
Said process is identical with the existing respective process as defined in LTE-Advanced, therefore will not be described in detail herein.
In step S203, when special user equipment is selected to switch over, and meets some requirements, for example,
Selected user equipment is highspeed user's equipment, and macrocell 10 sends the switching on selected highspeed user's equipment to picocell 20
Ask (HANDOVER REQUEST), to transmit necessary information to the picocell 20 to supply it to switch over preparation.These
Information includes S1EPC (Evolved Packet Core, the packet of evolution of the X2 signaling contexts, user equipment of user equipment
Core net) signaling context, RRC (Radio Resource Control, wireless heterogeneous networks) contexts and QoS information.When
So, the configured information by highspeed user's equipment of the picocell 20 should also be included.
Here, macrocell 10 can select one or more user equipmenies to switch over, as long as it meets switching condition.
Preferably, it is similar to can further include residence time of the selected user equipment in picocell 20 for foregoing switching condition.
Further, macrocell 10 can also first build group to selected multiple highspeed user's equipment, and send and close to picocell 20
In the handover request of highspeed user's device cluster.
For purposes of illustration only, following select highspeed user's equipment 3 to ask to switch to picocell 20 with macrocell 10
To be illustrated.However, those skilled in the art will be understood that these citings are merely to illustrate the purpose of the present invention, and
Any limitation of the invention is not construed as, that is, for the situation for selecting multiple highspeed user's equipment to switch over, this hair
It is bright equally applicable.
In step S204, after its handover request on highspeed user's equipment 3 is received from macrocell 10, in response to
The handover request, the picocell 20 are that highspeed user's equipment 3 configuration retains resource.Based on the E-RAB received
The QoS information of (Enhanced-Radio Access Bear, enhanced wireless access bearer) and the nothing of the picocell 20
Line resource, the picocell 20 carry out policy selection and Access Control.Here, picocell 20 breaks off relations the handover request,
But selection and the interference cancellation mechanisms of the cooperative scheduling of macrocell 10, for example, the high speed use that picocell 20 switches for institute's request
The configuration of family equipment 3 retains resource, such as retains specific sub-frame, so that macrocell carries on resource is retained for highspeed user's equipment 3
For service.Wherein, in subframe is retained, picocell 20 at least still needs to transmit CRS signals (Cell-specific
Reference Signal, cell reference signals).
In step S205, picocell 20 breaks off relations message to the transmission of macrocell 10 corresponding to the switching of its handover request,
Message is broken off relations in the switching includes the configured information of the reservation resource to ask highspeed user's equipment 3 of switching to be configured.It is for example, micro-
Microcell 20 sends HANDOVERREQUEST Negative ACKNOWLEDGE (NACK) message to macrocell, wherein carrying micro-
The resource use patterns for the reservation resource that Microcell 20 configures for highspeed user's equipment 3 of request switching.Preferably, the switching is determined
Other information can be also carried in exhausted message, for example, the situation of switching is asked highspeed user's device cluster, picocell 20 can determine
Fixed that only part highspeed user equipment therein is switched over, also other highspeed users as in highspeed user's device cluster set
Standby configuration retains resource, and so as to the switching, to break off relations highspeed user's device cluster after can also including renewal in message (including pico-
Cell 20 retains highspeed user's equipment of resource for its configuration) and its identification information, and associated subframe Land use models.
After the switching refuse information transmitted by the handover request before receiving picocell 20 and corresponding to, macrocell
10 according to including reservation resource configured information, set in the reservation resource that picocell 20 is configured to highspeed user
Standby 3 provide service, to avoid for/the interference from picocell 20.In step S206a, the NACK message is being received
Afterwards, macrocell 10 configures RRM/RLM (Radio Link by RRC signaling to the highspeed user's equipment 3 for passing through picocell 20
Mornitor, Radio Link monitoring)/CSI (Channel StateInformation, channel condition information) restricted measurement
Report.In step S206b, highspeed user's equipment 3 will be triggered to according to the RRM/RLM/CSI configured according to pre-defined rule
Restrictive parameter, corresponding measurement report is reported to the macrocell 10.
In step S207, macrocell 10 determines highspeed user's equipment based on the restricted measurement reports of RLM received
Whether 3 had been moved out the picocell 20.An exemplary Rule of judgment described below：
If the Reference Signal Received Power (RSRP, Reference SignalReceiving Power) of picocell
Reference Signal Received Power-the T of ＜ macrocells, i.e. RSRP (picocell) ＜ RSRP (macrocell)-T, then highspeed user's equipment 3
Outside coverage in picocell, wherein T is a predetermined threshold value.
When it is determined that highspeed user's equipment 3 is moved to outside the coverage of picocell 20, macrocell 10 is to pico- small
Area 20 sends the notification message on stopping retaining resource for the configuration of highspeed user's equipment 3, if macrocell 10 is to picocell 20
" stopping coordinating request (StopCoordination Request) " message is sent, wherein carrying the mark of highspeed user's equipment 3
Information.
For there is the situation of multiple highspeed user's device request switchings, when all highspeed user's equipment are in picocell
When outside 20 coverage, macrocell 10 is sent on stopping retaining for these highspeed user's device configurations to picocell 20
The notification message of resource.
In step S208, the notification message of picocell 20 according to transmitted by macrocell 10, stop and the macrocell
10 carry out the configuration of the corresponding reservation resource of coordinated scheduling.That is, picocell 20 stops reservation to highspeed user's equipment 3
The configuration of frame, and recover to normal work.
In step S209, picocell 20 is sent to macrocell 10 " to be stopped coordinating request confirmation (Stop
Coordination Request Acknowledge) " message.
In step S210, macrocell 10 reconfigures channel conditions measurement report to highspeed user's equipment 3, and recovers normal
Work.
Fig. 3 be according to the method flow diagram of another preferred embodiment of the present invention, show in heterogeneous network macrocell with
Picocell coordinates to eliminate the process disturbed between picocell and highspeed user's equipment.
Still coordinate and be in refering to Fig. 1, picocell 20 within the coverage of macrocell 10, i.e., both have identical
Manage overlay area.Highspeed user's equipment 3 is in the coverage of macrocell 10, and its mobile route will pass through picocell 20.
Preferred embodiment shown in Fig. 3, its by picocell 20 using ABS (almostblank subframe, it is several
Blank subframe) avoid the interference between picocell 20 and highspeed user's equipment 3.So as to which this picocell 20 is oriented to
ABS configuration process, can be used for solve work as macrocell 10 in highspeed user's equipment 3 by picocell 20 coverage
Caused strong jamming problem.
Specifically, in step S301a, macrocell 10 measures report to all user device configurations in its coverage
Accuse, and the mobile threshold value of addition wherein carrys out assisting user equipment and judges its mobile status, i.e. highspeed user's equipment or low speed user
Equipment.The threshold value is determined by macrocell 10, and can be adjusted with practical situation.
In step S301b, when highspeed user's equipment 3 is close to picocell 20, by it is connect from the picocell
The RSRP of receipts is more stronger than the RSRP received from macrocell 10, and A3 events are triggered, and highspeed user's equipment 3 reports to macrocell 10
Measurement report.Except common measurement parameter, highspeed user's equipment 3 also sends highspeed user's equipment instruction letter to macrocell 10
Breath, for example, adding highspeed user's equipment designator in measurement report, it can take a bit, and represent high with " 1 "
Fast user equipment, with " 0 " represent low speed user equipment, with notify macrocell 10 its should be avoided by switching to picocell 20.
The mobile status estimation of user equipment can be obtained by calculating the user equipment switches in the scheduled time number.Below
One exemplary A3 event is shown：
Mn+Ofn+Ocn-Hys ＞ Mp+Ofp+Ocp+Off
Wherein, Mn is the measurement result to neighbor cell, does not consider any skew；
Ofn is the frequency particular offset of neighbor cell, i.e., fixed in EUTRA measurement configuration (measObjectEUTRA)
The deviation frequency parameter (offsetFreq) of justice, it corresponds to the frequency of neighbor cell；
Ocn is the cell specific offset amount of neighbor cell, i.e., in EUTRA measurement configuration (measObjectEUTRA)
The exclusive offset parameter of cell (cellIndividualOffset) of definition, if do not configured for neighbor cell, Ocn is set
For 0；
Mp is the measurement result to primary service cell, does not consider any skew；
Ofp is the frequency particular offset of primary service cell, i.e., configures (measObjectEUTRA) in EUTRA measurement
Defined in deviation frequency parameter (offsetFreq), its correspond to the primary service cell carrier frequency；
Ocp is the cell specific offset amount of primary service cell, i.e., is configured in EUTRA measurement
(measObjectEUTRA) the exclusive offset parameter of cell (cellIndividualOffset) defined in, if not being pico-
Cell configuration, then Ocp is arranged to 0；
Hys is the lag parameter of the event, i.e., is the thing in EUTRA report configuration (reportConfigEUTRA)
The lag parameter that part defines；
Off is the offset parameter of the event, i.e., is the thing in EUTRA report configuration (reportConfigEUTRA)
The a3 offsets that part defines.
In step s 302, when receiving the measurement report that is triggered by A3 events, macrocell 10 is used according to high speed therein
Family equipment designator is classified to the mobile status of user equipment.Meanwhile macrocell 10 will detect potential switch over
The type of Target cell, i.e. Target cell are macrocell or picocell, and the Target cell will be set to the user in macrocell 10
It is standby to cause strong interference.
According to the mobile status grade of user equipment, macrocell 10 will carry out following operate respectively：
1) handover operation will be started for low speed user equipment, macrocell 10；
2) for highspeed user's equipment, macrocell 10 will ask to retain resource for its configuration to picocell 20, and no longer
Switch it to picocell 20.
In step S303, for highspeed user's equipment 3, macrocell 10 is sent on to use at a high speed to target picocell
The configuration of family equipment 3 retains the configuring request of resource, for example, macrocell 10 is sent to picocell 20, " ABS opens request (ABS
Turn-on Request) " message.Preferably, when macrocell 10 is currently providing VoIP (Voice for highspeed user's equipment 3
OverInternet Protocol, the networking telephone) service when, the ABS open request in can also further comprise the VoIP service
Next transmission time message.
In step s 304, picocell 20 is set in response to the configuring request transmitted by macrocell 10 for highspeed user
Standby 3 configuration retains resource, such as ABS.According to the current ABS states of the picocell 20, picocell 20 will carry out respectively with
Lower operation：
1) if picocell 20 currently not yet configures ABS and highspeed user's equipment 3 is using VoIP service, picocell
20 open the next transmission time message and VoIP data transmission intercal of highspeed user's equipment 3 in request according to ABS, to determine
It is set to when highspeed user's equipment 3 configures ABS and which subframe is used；
2) if picocell 20 current not yet configuration ABS and highspeed user's equipment 3 and unused VoIP service, pico- small
Area 20 can configure any subframe as reservation subframe；
3) currently if configured ABS and its ABS for being received open request not directed to using VoIP to picocell 20
Highspeed user's equipment of service, picocell 20 need not additionally configure reservation subframe for highspeed user's equipment；
4) currently if configured ABS and its ABS for being received open request for using VoIP service to picocell 20
Highspeed user's equipment, picocell 20 according to ABS open request in highspeed user's equipment 3 next transmission time message come
Reconfigure ABS.
In step S305, picocell 20 sends the reservation on being configured by highspeed user's equipment 3 to macrocell 10
The configured information of resource.For example, it is that picocell 20 is logical after highspeed user's equipment 3 configures or reconfigures ABS in picocell 20
Cross existing X2ABS load related messages and the configured information for configuring ABS is sent to macrocell 10.
In step S306, for macrocell 10 after from the reception of picocell 20, it configures ABS configured information, this is grand small
Area 10 has reset measurement configuration information and has made corresponding scheduling according to configured ABS and determined by RRC signaling.
Due to picocell 20 using ABS be in order to protect with highspeed user's equipment 3 in macrocell 10, therefore,
When highspeed user's equipment 3 leaves picocell 20, ABS should be stopped, to avoid the wasting of resources.It is grand small in step S307
Area 10 detect highspeed user equipment 3 whether also in picocell 20 coverage, and when it leaves picocell 20, to
Picocell 2 is sent on stopping configuring the notification message for retaining resource, for example, sending " ABS turn-off requests to picocell 20
(ABS Turn-off Request) " message.Here, whether at least 2 kinds of modes detect highspeed user's equipment 3 in pico-
Outside the coverage of cell 20, to cause picocell 20 to stop configuring ABS for it：
1) when highspeed user's equipment 3 detects its RSRP (Reference SignalReceiving received
Power, Reference Signal Received Power) or RSRQ (Reference SignalReceiving Quality, reference signal reception
Quality) it is less than corresponding predetermined threshold, highspeed user's equipment 3 will send particular message to indicate to come to affiliated macrocell 10
The interference of picocell 20 is current smaller, so as to notify picocell 20 to stop ABS configurations；
2) when macrocell 10 receives the measurement report of other A3 events triggering, the wherein identification information of Target cell therewith
The identification information of picocell in the measurement report of the preceding A3 events triggered by highspeed user's equipment 3 is different, and this is grand small
Area 10 knows that highspeed user's equipment 3 has left the picocell 20, and the picocell 20 can be notified to stop ABS configurations.
In step S308, after the ABS turn-off requests of the transmission of macrocell 10 are received, picocell 20 is according to its institute
Other ABS received open request to decide whether to stop configuration ABS.
Fig. 4 is the schematic device according to a preferred embodiment of the present invention, shows to coordinate to eliminate in heterogeneous network
The macrocell disturbed between picocell and highspeed user's equipment and the base station of picocell.
Herein, base station of the macrocell corresponding to it, i.e. both " macro cell base station " equally use, and do not distinguish.Together
Sample, base station of the picocell corresponding to it, i.e. both " femtocell base station " also equally use, and do not distinguish.
Cooperation refers to Fig. 1, and picocell 20 is within the coverage of macrocell 10, i.e., both have identical geographical
Overlay area.Highspeed user's equipment 3 is in the coverage of macrocell 10, and its mobile route will pass through picocell 20.
As shown in figure 4, macro cell base station 10 includes instruction R-T unit 101 and communicator 102；Femtocell base station 20
Including device for allocating resources 201 and resource instruction device 202.
When highspeed user's equipment 3 enters the coverage of picocell 20, the resource distribution of the femtocell base station 20
Device 201 is that highspeed user's equipment 3 configuration retains resource (reservedresource), to eliminate the picocell 20 with being somebody's turn to do
Interference between highspeed user's equipment 3.Here, retain resource use patterns (the resource utilization of resource
Pattern) there can be a variety of granularities, such as subframe (subframe) Land use models.In view of service quality (QoS,
Qualityof Service) and other factors in the case of, smaller granularity can also be used, as resource block (RB,
Resource Block) Land use models.Resource use patterns can be formed with two parts, include the resource use patterns of downlink
With the resource use patterns of up-link.Herein, it is for ease of illustration of the invention, illustrated more with subframe Land use models.
Then, the resource instruction device 202 of femtocell base station 20 provides the reservation configured for highspeed user's equipment 3
The configured information in source is sent to macrocell 10.Correspondingly, the instruction R-T unit 101 of macro cell base station 10 connects from picocell 20
Receive the configured information on reservation resource.
The communicator 102 of macro cell base station 10 is communicated in the reservation resource with highspeed user's equipment 3.Example
Such as, communicator 102 is reconfigured by RRC signaling to highspeed user's equipment 3, and to the high speed in the reservation resource
User equipment 3 is scheduled.
For retaining subframe, on the uplink, picocell 20 will not transmit any wireless signal, while macrocell 10
It can be scheduled on subframe is retained to highspeed user's equipment 3 and transmit data, to eliminate picocell 20 to highspeed user
Interference caused by equipment 3,；On uplink, picocell 20 can equally retain specific resources, and highspeed user's equipment 3 can
To send upstream data to macrocell 10 on resource is retained, to eliminate interference of the highspeed user's equipment 3 to picocell 20.From
And interference of the picocell 20 with highspeed user's equipment 3 on Uplink/Downlink can be eliminated.For other sons
Frame, picocell 20 still can normal consistencies.
When highspeed user's equipment 3 leaves the coverage of picocell 20, macrocell 10 can also notify picocell 20, with
Stop configuring for highspeed user's equipment 3 and retain resource.
In macro cell base station 10 and one of femtocell base station 20 preferred application scenarios as shown in Figure 4, by pico- small
Area base station 20 retains resource to decide whether to configure for highspeed user's equipment 3.
Specifically, macrocell 10 can have to the user device configuration measurement parameter in its coverage, these measurement parameters
Help the function of controlling the connection of user equipment mobile.When meeting predetermined rule, these user equipmenies are triggered to basis
The measurement parameter that macrocell 10 configures, corresponding measurement report is reported to macrocell 10.
Macrocell 10 is according to measurement report and RRM (Radio ResourceManagement, the nothing of user equipment to report
Line resource management) information, switching is made to respective user equipment and is determined.
When special user equipment is selected to switch over, and meets some requirements, for example, selected user equipment is
Highspeed user's equipment, the instruction R-T unit 101 of macro cell base station 10 is sent to picocell 20 to be set on selected highspeed user
Standby handover request (HANDOVERREQUEST), to transmit necessary information to the picocell 20 to supply it to switch over standard
It is standby.These information include the X2 signaling contexts of user equipment, the S1EPC signaling contexts of user equipment, RRC contexts and
QoS information.Certainly, the configured information by highspeed user's equipment of the picocell 20 should also be included.
Here, macrocell 10 can select one or more user equipmenies to switch over, as long as it meets switching condition.
Preferably, it is similar to can further include residence time of the selected user equipment in picocell 20 for foregoing switching condition.
Further, macrocell 10 can also first build group to selected multiple highspeed user's equipment, and send and close to picocell 20
In the handover request of highspeed user's device cluster.
For purposes of illustration only, following select highspeed user's equipment 3 to ask to switch to picocell 20 with macrocell 10
To be illustrated.However, those skilled in the art will be understood that these citings are merely to illustrate the purpose of the present invention, and
Any limitation of the invention is not construed as, that is, for the situation for selecting multiple highspeed user's equipment to switch over, this hair
It is bright equally applicable.
The device for allocating resources 201 of femtocell base station 20 is receiving it on highspeed user's equipment 3 from macrocell 10
After handover request, in response to the handover request, configured for highspeed user's equipment 3 and retain resource.Based on the E- received
RAB (Enhanced-Radio Access Bear, enhanced wireless access bearer) QoS information and the picocell 20
Radio Resource, the picocell 20 carry out policy selection and Access Control.Cut here, device for allocating resources 201 breaks off relations this
Request is changed, but selects the interference cancellation mechanisms with the cooperative scheduling of macrocell 10, for example, device for allocating resources 201 is is asked
The configuration reservation resource of highspeed user's equipment 3 of switching, such as retains specific sub-frame, so that macrocell is the high speed on resource is retained
User equipment 3 provides service.Wherein, in subframe is retained, picocell 20 still needs to transmit at least CRS signals (Cell-
Specific Reference Signal, cell reference signals).Device for allocating resources 201 is sent to macrocell 10 corresponds to it
Message is broken off relations in the switching of handover request, and the guarantor that message includes being configured for highspeed user's equipment 3 of request switching is broken off relations in the switching
Stay the configured information of resource.For example, device for allocating resources 201 sends HANDOVER REQUEST to macrocell
NegativeACKNOWLEDGE (NACK) message, wherein the highspeed user's equipment 3 for carrying picocell 20 as request switching configures
Reservation resource resource use patterns.Preferably, the switching, which is broken off relations, can also carry other information in message, for example, at a high speed
User equipment group asks the situation of switching, and picocell 20 may decide that and only part highspeed user equipment therein is cut
Change, be also other highspeed user's device configurations reservation resource in highspeed user's device cluster, so as to which message is broken off relations in the switching
In can also include renewal after highspeed user's device cluster (including picocell 20 for its configuration retain resource highspeed user set
It is standby) and its identification information, and associated subframe Land use models.
The handover request institute before picocell 20 corresponds to is received in the instruction R-T unit 101 of macro cell base station 10
After the switching refuse information of transmission, communicator 102 according to including reservation resource configured information, in picocell
To the offer service of highspeed user's equipment 3 in the 20 reservation resources configured, to avoid for/the interference from picocell 20.
After instruction R-T unit 101 receives the NACK message, communicator 102 is by RRC signaling to by picocell 20
Highspeed user's equipment 3 configures RRM/RLM (Radio Link Momitor, Radio Link monitoring)/CSI (Channel State
Information, channel condition information) restricted measurement report.Highspeed user's equipment 3 will be triggered to according to pre-defined rule
According to the RRM/RLM/CSI restrictive parameters configured, corresponding measurement report is reported to the macrocell 10.
The restricted measurement reports of RLM reported based on highspeed user's equipment 3, the notice device 103 of macro cell base station 10 are true
Whether fixed highspeed user's equipment 3 has had been moved out the picocell 20.An exemplary Rule of judgment described below：
If the Reference Signal Received Power (RSRP, Reference SignalReceiving Power) of picocell
Reference Signal Received Power-the T of ＜ macrocells, i.e. RSRP (picocell) ＜ RSRP (macrocell)-T, then highspeed user's equipment 3
Outside coverage in picocell, wherein T is a predetermined threshold value.
When it is determined that highspeed user's equipment 3 is moved to outside the coverage of picocell 20, notice device 103 is to pico-
Cell 20 sends the notification message on stopping retaining resource for the configuration of highspeed user's equipment 3, such as notifies device 103 to pico- small
Area 20 sends " stopping coordinating request (StopCoordination Request) " message, wherein carrying highspeed user's equipment 3
Identification information.
For there is the situation of multiple highspeed user's device request switchings, when all highspeed user's equipment are in picocell
When outside 20 coverage, it is these highspeed user's device configurations that notice device 103 is sent on stopping to picocell 20
Retain the notification message of resource.
The notice reception device 203 of femtocell base station 20 receives the notification message transmitted by macrocell 10, configuration control
Device 204 processed stops carrying out the configuration of the corresponding reservation resource of coordinated scheduling to the macrocell 10.That is, configuration control device
204 stop the configuration of the reservation subframe to highspeed user's equipment 3, while picocell 20 recovers to normal work.
Notice reception device 203 is also sent to macrocell 10 " to be stopped coordinating request confirmation (StopCoordination
Request Acknowledge) " message.
Then, macrocell 10 reconfigures channel conditions measurement report to highspeed user's equipment 3, and recovers normal work.
In macro cell base station 10 and another preferred application scenarios of femtocell base station 20 as shown in Figure 4, macrocell
Base station 10 directly asks femtocell base station 20 to retain resource for the configuration of highspeed user's equipment 3, by being utilized in picocell 20
ABS (almost blank subframe, almost blank subframe) is avoided between picocell 20 and highspeed user's equipment 3
Interference.So as to the ABS configuration process that this picocell 20 is oriented to, be used for solving to work as the highspeed user in macrocell 10
Equipment 3 is by strong jamming problem caused by the coverage of picocell 20.
Macrocell 10 adds mobile threshold value wherein to all user device configuration measurement reports in its coverage
Carry out assisting user equipment and judge its mobile status, i.e. highspeed user's equipment or low speed user equipment.The threshold value is true by macrocell 10
It is fixed, and can be adjusted with practical situation.
When highspeed user's equipment 3 is close to picocell 20, by it is from the RSRP ratios that the picocell is received from grand
The RSRP that cell 10 is received is stronger, and A3 events are triggered, and highspeed user's equipment 3 is to the reporting measurement reports of macrocell 10.Except
Common measurement parameter, highspeed user's equipment 3 also sends highspeed user's equipment configured information to macrocell 10, for example, measuring
Highspeed user's equipment designator is added in report, it can take a bit, and represent highspeed user's equipment with " 1 ", use
" 0 " represent low speed user equipment, with notify macrocell 10 its should be avoided by switching to picocell 20.The movement of user equipment
State estimation can be obtained by calculating the user equipment switches in the scheduled time number.One described below exemplary
A3 events：
Mn+Ofn+Ocn-Hys ＞ Mp+Ofp+Ocp+Off
Wherein,
Wherein, Mn is the measurement result to neighbor cell, does not consider any skew；
Ofn is the frequency particular offset of neighbor cell, i.e., fixed in EUTRA measurement configuration (measObjectEUTRA)
The deviation frequency parameter (offsetFreq) of justice, it corresponds to the frequency of neighbor cell；
Ocn is the cell specific offset amount of neighbor cell, i.e., in EUTRA measurement configuration (measObjectEUTRA)
The exclusive offset parameter of cell (cellIndividualOffset) of definition is set Ocn if do not configured for neighbor cell
For 0；
Mp is the measurement result to primary service cell, does not consider any skew；
Ofp is the frequency particular offset of primary service cell, i.e., configures (measObjectEUTRA) in EUTRA measurement
Defined in deviation frequency parameter (offsetFreq), its correspond to the primary service cell carrier frequency；
Ocp is the cell specific offset amount of primary service cell, i.e., is configured in EUTRA measurement
(measObjectEUTRA) the exclusive offset parameter of cell (cellIndividualOffset) defined in, if not being pico-
Cell configuration, then Ocp is arranged to 0；
Hys is the lag parameter of the event, i.e., is the thing in EUTRA report configuration (reportConfigEUTRA)
The lag parameter that part defines；
Off is the offset parameter of the event, i.e., is the thing in EUTRA report configuration (reportConfigEUTRA)
The a3 offsets that part defines.
When receiving the measurement report that is triggered by A3 events, macrocell 10 according to highspeed user's equipment designator therein come
The mobile status of user equipment is classified.Meanwhile macrocell 10 will detect the type of the potential Target cell switched over,
I.e. Target cell is macrocell or picocell, and the Target cell will cause strong do to the user equipment in macrocell 10
Disturb.
According to the mobile status grade of user equipment, macrocell 10 will carry out following operate respectively：
1) handover operation will be started for low speed user equipment, macrocell 10；
2) for highspeed user's equipment, macrocell 10 will ask to retain resource for its configuration to picocell 20, and no longer
Switch it to picocell 20.
For highspeed user's equipment 3, the instruction R-T unit 101 of macro cell base station 10 to target picocell send on
The configuring request for retaining resource is configured for highspeed user's equipment 3, for example, instruction R-T unit 101 is sent to picocell 20
" ABS opens request (ABS Turn-onRequest) " message.Preferably, when macrocell 10 is currently for highspeed user's equipment 3
When providing VoIP (Voice over Internet Protocol, the networking telephone) services, the ABS, which is opened in request, can also enter one
Step includes the next transmission time message of the VoIP service.
The device for allocating resources 201 of femtocell base station 20 receives and responds the configuring request transmitted by macrocell 10,
Configured for highspeed user's equipment 3 and retain resource, such as ABS.According to the current ABS states of the picocell 20, resource distribution dress
Following operate will be carried out respectively by putting 201：
1) if picocell 20 currently not yet configures ABS and highspeed user's equipment 3 is using VoIP service, resource distribution
Device 201 is opened according to ABS between next transmission time message and the VoIP data transmission of highspeed user's equipment 3 in request
Every to be determined as which subframe used when highspeed user's equipment 3 configures ABS；
Not yet configure ABS 2) if picocell 20 is current and highspeed user's equipment 3 and VoIP service is not used, resource is matched somebody with somebody
Put device 201 and can configure any subframe as reservation subframe；
3) currently if configured ABS and its ABS for being received open request not directed to using VoIP to picocell 20
Highspeed user's equipment of service, device for allocating resources 201 need not additionally configure reservation subframe for highspeed user's equipment；
4) currently if configured ABS and its ABS for being received open request for using VoIP service to picocell 20
Highspeed user's equipment, device for allocating resources 201 according to ABS open request in highspeed user's equipment 3 next transmission time
Message reconfigures ABS.
Resource instruction device 202 sends the finger of the reservation resource on being configured by highspeed user's equipment 3 to macrocell 10
Show information.For example, it is resource instruction device 202 after highspeed user's equipment 3 configures or reconfigures ABS in device for allocating resources 201
The configured information for configuring ABS is sent to macrocell 10 by existing X2ABS load related messages.
The instruction R-T unit 101 of macro cell base station 10 from picocell 20 receive its configure ABS configured information
Afterwards, communicator 102 has reset measurement configuration information and has made corresponding scheduling according to configured ABS and determined by RRC signaling.
Due to picocell 20 using ABS be in order to protect with highspeed user's equipment 3 in macrocell 10, therefore,
When highspeed user's equipment 3 leaves picocell 20, ABS should be stopped, to avoid the wasting of resources.The notice of macro cell base station 10
Device 103 detect highspeed user equipment 3 whether also in picocell 20 coverage, and leave picocell 20 at it
When, sent to picocell 2 on stopping configuring the notification message for retaining resource, for example, being sent to picocell 20, " ABS is closed
Close request (ABS Turn-offRequest) " message.Here, at least 2 kinds of modes detect whether highspeed user's equipment 3 is located
Outside the coverage of picocell 20, to cause picocell 20 to stop configuring ABS for it：
1) when highspeed user's equipment 3 detects its RSRP (Reference SignalReceiving received
Power, Reference Signal Received Power) or RSRQ (Reference SignalReceiving Quality, reference signal reception
Quality) it is less than corresponding predetermined threshold, highspeed user's equipment 3 will send particular message to indicate to come to affiliated macrocell 10
The interference of picocell 20 is current smaller, so as to notify picocell 20 to stop ABS configurations；
2) when macrocell 10 receives the measurement report of other A3 events triggering, the wherein identification information of Target cell therewith
The identification information of picocell in the measurement report of the preceding A3 events triggered by highspeed user's equipment 3 is different, and this is grand small
Area 10 knows that highspeed user's equipment 3 has left the picocell 20, and the picocell 20 can be notified to stop ABS configurations.
After the notice reception device 203 of femtocell base station 20 receives the ABS turn-off requests of the transmission of macrocell 10,
Other ABS that configuration control device 204 is received according to it open request to decide whether to stop configuration ABS.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, can adopt
With application specific integrated circuit (ASIC), general purpose computer or any other realized similar to hardware device.
The software program of the present invention can realize steps described above or function by computing device.Similarly, originally
The software program (including related data structure) of invention can be stored in computer readable recording medium storing program for performing, for example, RAM is deposited
Reservoir, magnetically or optically driver or floppy disc and similar devices.In addition, some steps or function of the present invention can employ hardware to reality
It is existing, for example, coordinating as with processor so as to perform the circuit of each function or step.
In addition, the part of the present invention can be applied to computer program product, such as computer program instructions, when its quilt
When computer performs, by the operation of the computer, the method according to the invention and/or technical scheme can be called or provided.
And the programmed instruction of the method for the present invention is called, it is possibly stored in fixed or moveable recording medium, and/or pass through
Broadcast or the data flow in other signal bearing medias and be transmitted, and/or be stored according to described program instruction operation
In the working storage of computer equipment.Here, according to one embodiment of present invention, it includes a device, the device bag
The memory for storing computer program instructions and the processor for execute program instructions are included, wherein, when the computer journey
Sequence instruction by the computing device when, trigger the plant running based on it is foregoing according to the present invention multiple embodiments method and/
Or technical scheme.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (9)
1. a kind of method disturbed between elimination picocell and highspeed user's equipment for heterogeneous network, wherein, the isomery
Network includes macrocell and picocell, and both have geographical same overlay area, and highspeed user's equipment includes its speed
More than the user equipment of predetermined threshold, wherein, this method includes：
For a when highspeed user's equipment corresponding to the macrocell enters the coverage of the picocell, the picocell is institute
State highspeed user's device configuration and retain resource, to eliminate the interference between the picocell and highspeed user's equipment；
The b macrocells are communicated in the reservation resource with highspeed user's equipment；
Wherein, the step a is specifically included：
- the macrocell sends the handover request on highspeed user's equipment to the picocell；
- in response to the handover request, the picocell is to retain resource described in highspeed user's device configuration；
- the picocell sends the switching refuse information corresponding to the handover request to the macrocell, and the switching refusal disappears
Breath includes the configured information of the reservation resource.
2. according to the method for claim 1, wherein, the step b includes：
- the macrocell reconfigures the user equipment according to the reservation resource, with the reservation resource with the use
Family equipment is communicated.
3. method according to claim 1 or 2, wherein, this method also includes：
- when highspeed user's equipment is in outside the coverage of the picocell, the macrocell is sent out to the picocell
Send the notification message on stopping the configuration to the reservation resource；
- the picocell stops the configuration to the reservation resource according to the notification message.
4. it is a kind of be used for picocell in heterogeneous network eliminate its device for being disturbed between highspeed user's equipment, wherein, should
Heterogeneous network includes the picocell and has the geographical macrocell with overlay area with it, and highspeed user's equipment includes
Its speed exceedes the user equipment of predetermined threshold, wherein, the device includes：
Device for allocating resources, for entering the coverage of the picocell when highspeed user's equipment corresponding to the macrocell
When, retain resource for highspeed user's device configuration, it is dry between the picocell and highspeed user's equipment to eliminate
Disturb；
Resource instruction device, for sending the configured information on the reservation resource to the macrocell, to be existed by the macrocell
Communicated in the reservation resource with highspeed user's equipment；
Wherein, the device for allocating resources is specifically used for：
- the handover request from macrocell reception on highspeed user's equipment；
- in response to the handover request, to retain resource described in highspeed user's device configuration；
Wherein, the resource instruction device is specifically used for：
- the switching refuse information for corresponding to the handover request is sent to the macrocell, the switching refuse information includes described
Retain the configured information of resource, to be communicated by the macrocell in the reservation resource with highspeed user's equipment.
5. device according to claim 4, wherein, the device includes：
Reception device is notified, it is grand from this for when highspeed user's equipment is in outside the coverage of the picocell
Cell receives the notification message on stopping the configuration to the reservation resource；
Control device is configured, for according to the notification message, stopping the configuration to the reservation resource.
6. a kind of auxiliary picocell for being used for macrocell in heterogeneous network eliminates its dress disturbed between highspeed user's equipment
Put, wherein, the heterogeneous network includes the macrocell and has the geographical picocell with overlay area with it, and the high speed is used
Family equipment includes the user equipment that its speed exceedes predetermined threshold, wherein, the device includes：
R-T unit is indicated, for entering the coverage of the picocell when highspeed user's equipment corresponding to the macrocell
When, the configured information of its reservation resource configured by highspeed user's equipment is received from the picocell；
Communicator, for being communicated in the reservation resource with highspeed user's equipment；
Wherein, the instruction R-T unit is specifically used for：
- the handover request to picocell transmission on highspeed user's equipment；
- from the picocell receive its correspond to the handover request switching refuse information, it is described switching refuse information include
The configured information for the reservation resource that the picocell is configured by highspeed user's equipment.
7. device according to claim 6, wherein, the communicator is used for：
- according to the reservation resource, the user equipment is reconfigured, to enter in the reservation resource with the user equipment
Row communication.
8. the device according to claim 6 or 7, wherein, the device also includes：
Device is notified, it is slightly small to this for when highspeed user's equipment be in outside the coverage of the picocell
Area sends the notification message on stopping the configuration to the reservation resource.
9. the system disturbed between a kind of elimination picocell and highspeed user's equipment for heterogeneous network, wherein, the isomery
Network includes macrocell and picocell, and both have geographical same overlay area, and highspeed user's equipment includes its speed
More than the user equipment of predetermined threshold, wherein, the system includes being used for heterogeneous network as any one of claim 4 to 5
Picocell eliminates its device for being disturbed between highspeed user's equipment in network, and such as any one of claim 6 to 8 institute
The auxiliary picocell for being used for macrocell in heterogeneous network stated eliminates its device disturbed between highspeed user's equipment.
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| EP3783862B1 (en) * | 2017-05-09 | 2023-07-19 | Huawei Technologies Co., Ltd. | Session management method and session management function network element |
| CN108990119B (en) * | 2018-07-10 | 2020-02-18 | 北京邮电大学 | Networking method and device, electronic equipment and readable storage medium |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012060655A2 (en) * | 2010-11-05 | 2012-05-10 | 엘지전자 주식회사 | Method for performing handover in wireless communication system |
| CN102761973A (en) * | 2011-04-29 | 2012-10-31 | 普天信息技术研究院有限公司 | Method and system for adjusting almost bias subframe in heterogeneous network |
| CN102869052A (en) * | 2011-07-07 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for communication in heterogeneous mobile communication network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012060655A2 (en) * | 2010-11-05 | 2012-05-10 | 엘지전자 주식회사 | Method for performing handover in wireless communication system |
| CN102761973A (en) * | 2011-04-29 | 2012-10-31 | 普天信息技术研究院有限公司 | Method and system for adjusting almost bias subframe in heterogeneous network |
| CN102869052A (en) * | 2011-07-07 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for communication in heterogeneous mobile communication network |
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