CN104581810A

CN104581810A - Carrier-aggregation-based switching method, and inter-board polymerization switching method and device

Info

Publication number: CN104581810A
Application number: CN201410770604.4A
Authority: CN
Inventors: 崔哲芳; 马赛
Original assignee: Beijing Northern Fiberhome Technologies Co Ltd
Current assignee: CICT Mobile Communication Technology Co Ltd
Priority date: 2014-12-12
Filing date: 2014-12-12
Publication date: 2015-04-29
Anticipated expiration: 2034-12-12
Also published as: CN104581810B

Abstract

The invention provides a carrier-aggregation-based switching method, and an inter-board polymerization switching method and device. The carrier-aggregation-based switching method comprises the following steps: receiving a measurement report reported by UE; generating a candidate cell list according to the measurement report; judging whether a target main cell meets the switching requirement; sending a switching request message to a target base station when the target main cell meets the switching requirement; receiving a switching request confirmation message sent by the target base station; sending a switching command to the UE, wherein the switching command comprises configuration information of the target main cell and configuration information of successfully configured aggregation auxiliary cell so as to reconfigure a novel target main cell and a aggregation auxiliary cell according to the configuration information of the target main cell and the configuration information of successfully configured aggregation auxiliary cell after the UE receives the switching command. Consequently, the carrier aggregation in the switching technology which supports the carrier aggregation can be used for supporting the switching between one UE and service communication of a plurality of cells.

Description

Switching method and apparatus is polymerized between a kind of changing method based on carrier aggregation, plate

Technical field

The present invention relates to mobile communication technology field, more particularly, relate between a kind of changing method based on carrier aggregation, plate and be polymerized switching method and apparatus.

Background technology

LTE (Long Term Evolution, Long Term Evolution) system refers to as ensureing the evolution scheme that the competitiveness of 3GPP adopts for a long time.It is mainly with WCDMA (Wide band Code Division MultipleAccess, Wideband-CDMA) based on, by changing network architecture, and adopt new technology of eating dishes without rice or wine, reduce system complexity, and cooperate with different system.

Discrete, channel capacity are difficult to support that the wavelength coverage (Spectrum Fragment) of high bandwidth requirements business is polymerized to complete, that channel capacity is larger frequency spectrum by carrier aggregation technology, thus support higher system bandwidth, the raising availability of frequency spectrum.

In the handoff procedure of existing LTE system carrier aggregation, its switching flow is all only applicable to a carrier wave (or claiming community), namely in prior art, the handoff procedure of LTE system just carries out for single community, it does not support the switching that a UE (User Equipment, subscriber equipment) communicates with multiple Zone simultaneously.

Summary of the invention

In view of this, be polymerized switching method and apparatus between a kind of changing method based on carrier aggregation provided by the invention, plate, to solve in prior art the problem not supporting the switching that a UE communicates with multiple Zone simultaneously.Technical scheme is as follows:

Based on an aspect of of the present present invention, the invention provides a kind of changing method based on carrier aggregation, comprising:

Receive the measurement report of reported by user equipment UE, described measurement report comprises main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community;

According to described measurement report, generate candidate list;

Judge whether object main plot meets and switch requirement;

When described object main plot meet switching require time, send handover request message to object base station, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list;

Receive the switching request acknowledgement message that described object base station sends, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

Send switching command to described UE, described switching command comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful, to make described UE after receiving described switching command, the configuration information according to the configuration information of described object main plot and the auxiliary community of polymerization of configuration successful reshuffles new object main plot and the auxiliary community of polymerization.

Preferably, described according to described measurement report, generate candidate list and comprise:

By all communities in described measurement report according to signal quality descending, generate cell list, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ;

The community not belonging to described object base station in described cell list is deleted;

Not that best community is deleted by the community intermediate-frequeney point signal of frequency identical in described cell list;

To determine to delete the community not belonging to described object base station and the community intermediate-frequeney point signal deleting identical frequency be not cell list behind best community is candidate list.

Preferably, described handover request message also comprises: be polymerized auxiliary cell information in source base station;

Wherein said switching request acknowledgement message also comprises the reconfiguration information of being polymerized auxiliary community in described source base station; Described switching command also comprises the reconfiguration information of being polymerized auxiliary community in described source base station;

The reconfiguration information of being polymerized auxiliary community in described source base station is used for, after receiving the reconfiguration information of being polymerized auxiliary community in described source base station at described UE, according to the reconfiguration information of being polymerized auxiliary community in described source base station, discharge in described source base station and be polymerized auxiliary cell information.

Preferably, after described transmission switching command to described UE, described method also comprises:

Judge the handoff completion message whether receiving the transmission of described object base station in the first Preset Time;

If receive described handoff completion message in the first Preset Time, discharge the main plot information of described source base station and auxiliary cell information;

If do not receive described handoff completion message in the first Preset Time, discharge the configuration information of described source base station Zhong Fu community, and control described UE reporting measurement reports again.

Based on another aspect of the present invention, the present invention also provides a kind of changing method based on carrier aggregation, comprising:

Receive the handover request message that source base station sends, described handoff request message draws together main plot, source mark, object main plot mark, user equipment (UE) mark and described candidate list;

According to described object main plot mark, judge whether described object main plot meets and switch requirement;

When described object main plot meet switching require time, determine to be polymerized auxiliary community according to described candidate list;

Configure described object main plot;

After the configuration completing described object main plot, configure the auxiliary community of described polymerization successively;

After completing the auxiliary cell configuration of described polymerization, send switching request acknowledgement message to described source base station, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

Receive the handoff completion message that described UE sends, activate the auxiliary community of polymerization of described configuration successful, and described handoff completion message is forwarded to described source base station.

Wherein said switching request acknowledgement message also comprises the reconfiguration information of being polymerized auxiliary community in described source base station;

Preferably, describedly determine that being polymerized auxiliary community comprises according to described candidate list:

Carrier aggregation is not supported by described candidate list, and/or the community deletion that load is high;

By community remaining in described candidate list according to the signal quality auxiliary community of selective polymerization from high to low, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ.

Preferably, the number of the auxiliary community of described polymerization is less than or equal to the number of being polymerized auxiliary community in described source base station.

Preferably, after completing the auxiliary cell configuration of described polymerization, described method also comprises:

Judge the confirmation whether receiving the auxiliary community of described polymerization in the second Preset Time;

When receiving the confirmation of the auxiliary community of described polymerization in the second Preset Time, determine the auxiliary cell configuration success of described polymerization;

When not receiving the confirmation of the auxiliary community of described polymerization in the second Preset Time, determine the auxiliary cell configuration failure of described polymerization, the auxiliary cell information of polymerization of release configuration failure, and auxiliary for the polymerization of configuration failure community is deleted from described candidate list;

Determine that behind the auxiliary community of polymerization of deletion configuration failure, the candidate list be made up of the auxiliary community of the polymerization of configuration successful is final candidate list.

Based on another aspect of the invention, the present invention also provides between a kind of plate based on carrier aggregation and is polymerized changing method, comprising:

Source base station receives the measurement report of reported by user equipment UE, and described measurement report comprises main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community;

Described source base station, according to described measurement report, generates candidate list;

Described source base station judges the UE switching type obtained according to RRM RRM information and RRM, and obtains the information of object main plot, judges whether object main plot meets and switches requirement;

When object main plot meet switching require time, described source base station sends handover request message to object base station, and described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list;

After described object base station receives described handover request message, described handover request message is sent to chain of command CC;

Described chain of command CC is according to described handover request message, the configuration information of described object main plot mark, UE mark and channel to be accessed is sent to the media access MAC layer of main plot, to make described MAC layer, resource examination & verification is carried out to the handover request message that described source base station sends, and distribute new Radio Network Temporary Identifier RNTI for described object main plot, and this locality configuration is carried out to described object main plot;

Described chain of command CC is configured PDCP PDCP layer, MAC layer and physical layer PHY respectively, and carries out the configuration of GPRS Tunnel Protocol GTP forwarding tunnel;

The identification information of described object main plot is sent to the auxiliary community of polymerization of each veneer by described chain of command CC by downlink and uplink interfaces; The identification information of wherein said object main plot comprises beared information and/or the link information of described object main plot, so that the communication between each veneer between major-minor community;

After described chain of command CC completes every configuration, described object base station sends switching request acknowledgement message to described source base station, and described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

Described source base station receives the switching request acknowledgement message that described object base station sends, and send switching command to described UE, described switching command comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful, to make described UE after receiving described switching command, the configuration information according to the configuration information of described object main plot and the auxiliary community of polymerization of configuration successful reshuffles new object main plot and the auxiliary community of polymerization.

Based on another aspect of the invention, the present invention also provides a kind of switching device shifter based on carrier aggregation, comprising:

First receiving element, for receiving the measurement report of reported by user equipment UE, described measurement report comprises main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community;

Candidate list generation unit, for according to described measurement report, generates candidate list;

First judging unit, switches requirement for judging whether object main plot meets;

First transmitting element, for judge when described first judging unit object main plot meet switching require time, send handover request message to object base station, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list;

Second receiving element, for receiving the switching request acknowledgement message that described object base station sends, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

Second transmitting element, for sending switching command to described UE, described switching command comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful, to make described UE after receiving described switching command, the configuration information according to the configuration information of described object main plot and the auxiliary community of polymerization of configuration successful reshuffles new object main plot and the auxiliary community of polymerization.

Preferably, described candidate list generation unit comprises:

Cell list generate subelement, for by all communities in described measurement report according to signal quality descending, generate cell list, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ;

First deletes subelement, for being deleted the community not belonging to described object base station in described cell list;

Second deletes subelement, for by the community intermediate-frequeney point signal of frequency identical in described cell list not being best community deletion;

Determining subelement, is candidate list for determine to delete the community not belonging to described object base station and the community intermediate-frequeney point signal deleting identical frequency be not cell list behind best community.

Preferably, the second judging unit, for judging the handoff completion message whether receiving the transmission of described object base station in the first Preset Time;

Information releasing unit, for judging to receive described handoff completion message in the first Preset Time at described second judging unit, discharges the main plot information of described source base station and auxiliary cell information; In the first Preset Time, do not receive described handoff completion message, discharge the configuration information of described source base station Zhong Fu community, and control described UE reporting measurement reports again.

3rd receiving element, for receiving the handover request message that source base station sends, described handoff request message draws together main plot, source mark, object main plot mark, user equipment (UE) mark and described candidate list;

3rd judging unit, for according to described object main plot mark, judges whether described object main plot meets and switches requirement;

Be polymerized auxiliary community determining unit, for judge at described 3rd judging unit described object main plot meet switching require time, determine to be polymerized auxiliary community according to described candidate list;

First dispensing unit, for configuring described object main plot;

Second dispensing unit, for complete described object main plot at described first dispensing unit configuration after, configure the auxiliary community of described polymerization successively;

3rd transmitting element, for after described second dispensing unit completes the auxiliary cell configuration of described polymerization, send switching request acknowledgement message to described source base station, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

4th receiving element, for receiving the handoff completion message that described UE sends, activating the auxiliary community of polymerization of described configuration successful, and described handoff completion message is forwarded to described source base station.

Preferably, described polymerization auxiliary community determining unit comprises:

3rd deletes subelement, for not supporting carrier aggregation by described candidate list, and/or the community deletion that load is high;

Chooser unit, for by community remaining in described candidate list according to the signal quality auxiliary community of selective polymerization from high to low, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ.

Preferably, also comprise:

4th judging unit, for judging the confirmation whether receiving the auxiliary community of described polymerization in the second Preset Time;

Determining unit, for when described 4th judging unit judges the confirmation receiving the auxiliary community of described polymerization in the second Preset Time, determines the auxiliary cell configuration success of described polymerization; When not receiving the confirmation of the auxiliary community of described polymerization in the second Preset Time, determine the auxiliary cell configuration failure of described polymerization, the auxiliary cell information of polymerization of release configuration failure, and auxiliary for the polymerization of configuration failure community is deleted from described candidate list; Determine that behind the auxiliary community of polymerization of deletion configuration failure, the candidate list be made up of the auxiliary community of the polymerization of configuration successful is final candidate list.

Apply technique scheme of the present invention, provided by the invention based in the changing method of carrier aggregation, after the measurement report that source base station reception UE reports, according to measurement report, generate candidate list, and then judge whether object main plot meets switching requirement.When object main plot meet switching require time, send handover request message to object base station, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list.When object base station completes the configuration to object main plot and the auxiliary community of polymerization according to the handover request message that source base station sends, after generating configuration information, switching request acknowledgement message is sent to source base station, source base station is sent to UE at the switching command of the configuration information of the auxiliary community of polymerization by the configuration information and configuration successful that include object main plot, to realize UE to new object main plot and the configuration being polymerized auxiliary community.Therefore, the invention provides a kind of handoff technique supporting carrier aggregation, the switching that the UE of the carrier aggregation support in this handoff technique communicates with multiple Zone simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.

Fig. 1 is a kind of flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 1 a is the another kind of flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 2 is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 3 is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 3 a is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 4 is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 5 is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 6 is the structural representation of base station in the present invention;

Fig. 7 is the data flow schematic diagram be polymerized between plate in the present invention;

Fig. 8 is another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Fig. 9 is the structural representation of a kind of switching device shifter based on carrier aggregation provided by the invention;

Figure 10 is a kind of structural representation based on candidate list generation unit in the switching device shifter of carrier aggregation provided by the invention;

Figure 11 is the another kind of structural representation of a kind of switching device shifter based on carrier aggregation provided by the invention;

Figure 12 is a kind of structural representation based on being polymerized auxiliary community determining unit in the switching device shifter of carrier aggregation provided by the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment one

Refer to Fig. 1, it illustrates a kind of flow chart of a kind of changing method based on carrier aggregation provided by the invention, the method is applied to source base station, specifically comprises:

Step 101, source base station receives the measurement report that UE (User Equipment, subscriber equipment) reports.Wherein, described measurement report comprises main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community.

Step 102, source base station, according to measurement report, generates candidate list.

Measurement report comprises the information of all communities that UE measures, as main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community.Specifically as shown in Figure 1a, step 102 can comprise:

Step 1021, by all communities in measurement report according to signal quality descending, generates cell list.Wherein, signal quality comprises RSRP (Reference Signal Receiving Power, Reference Signal Received Power) or RSRQ (ReferenceSignalReceivingQuality, Reference Signal Received Quality).

All communities that UE measures by the source base station first in the present invention, according to the signal quality descending of community, generate cell list.

Step 1022, deletes the community not belonging to object base station in cell list.

ECGI (the E-UTRAN Cell Global Identifier of community, E-UTRAN Cell Global Identifier) totally 28, its first 20 is own base station ID (identity, identify label number), therefore according to id information, source base station by inquiry community ECGI, can judge whether community belongs to object base station.When judging that community does not belong to object base station, it is deleted from list.

The community intermediate-frequeney point signal of frequency identical in cell list is not that best community is deleted by step 1023.

The quality of intermediate-frequeney point signal of the present invention with the signal quality of community for benchmark, when the signal quality height of community, can show that frequency signal is good, when the signal quality of community is low, shows frequency poor signal.

Carrier aggregation technology is that multiple discrete spectrum is extended to wider frequency spectrum to transmit data, the frequency of polymerization is not identical, but in a base station, have the community of identical frequency, community best for the community intermediate-frequeney point signal of identical frequency is picked out by the present invention, is deleted other communities from cell list simultaneously.

It should be noted that this inventor, in the present invention, the sequencing of step 1022 and step 1023 is not construed as limiting, and also can be first to perform step 1023, in execution step 1022, or performs step 1022 and step 1023 simultaneously.

Step 1024, to determine to delete the community not belonging to object base station and the community intermediate-frequeney point signal deleting identical frequency be not cell list behind best community is candidate list.

Therefore after the process of above-mentioned steps 1022 and step 1023, on cell list, remaining community was for both to belong to object base station, was again the best community of the community intermediate-frequeney point signal of identical frequency.Now determine that the cell list after processing is candidate list.

Particularly, the way of realization of candidate list is as shown in table 1 below:

Table 1

CellID

PCI

Frequency

RSRP

RSRQ

ECGI

Candidate list comprises PCI (the physical-layer Cell identity of each community, Physical Cell Identifier), frequency, RSRP/RSRQ, the parameter informations such as ECGI (E-UTRAN Cell Global Identifier, E-UTRAN Cell Global Identifier).

Step 103, source base station judges whether object main plot meets and switches requirement.When object main plot meet switching require time, perform step 104, otherwise return step 101.

Wherein, object main plot is the community of triggering UE reporting measurement reports, measurement report be source base station handover trigger before UE measure the result reported for the last time.

Concrete, judge that the whether satisfied switching requirement in object main plot can be specially the signal quality judging object main plot and whether meet switching requirement.

Step 104, source base station sends handover request message to object base station.Wherein, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and candidate list.

In the present embodiment preferably, can also comprise in source base station in handover request message and be polymerized auxiliary cell information.Auxiliary cell information is polymerized for informing the occupation condition of object base station UE in source base station in described source base station.

Step 105, source base station receives the switching request acknowledgement message that object base station sends.Wherein, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

In actual application, step 105 can be specially the switching request acknowledgement message that source base station in Preset Time receives the transmission of object base station.Wherein Preset Time can define according to actual conditions.When source base station does not receive the switching request acknowledgement message of object base station transmission in Preset Time, return step 101, source base station waits for the measurement report again receiving UE and report, and again initiates switching flow.

In addition the present invention preferably, and switching request acknowledgement message can also comprise in source base station the reconfiguration information of being polymerized auxiliary community.

In the present invention, UE issues reconfiguration information for the release being polymerized auxiliary local resource in source base station by source base station have been come.But this reconfiguration information needs to be undertaken rewriting obtaining by object base station, therefore, when handover request message comprise in source base station be polymerized auxiliary cell information time, the reconfiguration information of being polymerized auxiliary community can be rewritten in source base station according to being polymerized in source base station auxiliary cell information in object base station, to realize UE to the release being polymerized auxiliary local resource in source base station.

Step 106, source base station sends switching command to UE.Wherein said switching command comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

The send mode that in concrete the present invention, source base station sends switching command to UE can be transparent transmission mode.

In the present invention, after UE receives switching command, the configuration information of object main plot in reading switching command and the configuration information of the auxiliary community of polymerization of configuration successful, and then reshuffle new object main plot and the auxiliary community of polymerization, to set up the communication connection with object base station according to the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

Preferably, the switching command in the present invention can also comprise in source base station the reconfiguration information of being polymerized auxiliary community.After UE receives in source base station the reconfiguration information of being polymerized auxiliary community, according to auxiliary cell information in this reconfiguration information source of release base station.

Therefore technique scheme of the present invention is applied, provided by the invention based in the changing method of carrier aggregation, after the measurement report that source base station reception UE reports, according to measurement report, generate candidate list, and then judge whether object main plot meets switching requirement.When object main plot meet switching require time, send handover request message to object base station, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list.When object base station completes the configuration to object main plot and the auxiliary community of polymerization according to the handover request message that source base station sends, after generating configuration information, switching request acknowledgement message is sent to source base station, source base station is sent to UE at the switching command of the configuration information of the auxiliary community of polymerization by the configuration information and configuration successful that include object main plot, to realize UE to new object main plot and the configuration being polymerized auxiliary community, to set up the communication connection with object base station.Therefore, the invention provides a kind of handoff technique supporting carrier aggregation, the switching that the UE of the carrier aggregation support in this handoff technique communicates with multiple Zone simultaneously.

Embodiment two

On the basis of above-described embodiment, as shown in Figure 2, it illustrates the another kind of flow chart of a kind of changing method based on carrier aggregation provided by the invention, after source base station sends switching command to UE, also comprise:

Step 201, source base station judges the handoff completion message whether receiving the transmission of object base station in the first Preset Time.If received, perform step 202, if do not received, perform step 203.

Wherein, the first Preset Time can be arranged according to actual needs flexibly.

Step 201 can comprise particularly, after source base station sends switching command to UE, start timer.Carry out timing by timer to judge whether to reach the first Preset Time.

Step 202, the main plot information of source of release base station and auxiliary cell information.

Step 203, the configuration information of Zhong Fu community, source of release base station, and control UE reporting measurement reports again.

In the present invention, after UE completes and reconfigures, can report handoff completion message to object base station, this handoff completion message, after receiving the handoff completion message that UE reports, can be forwarded to source base station, reconfigure to inform that source base station UE completes by object base station.Therefore, when in the first Preset Time, source base station receives the handoff completion message of object base station transmission, show that UE successful switch is to object base station, the now main plot information of source of release base station and auxiliary cell information, to save source Base Station System resource, if and source base station does not receive the handoff completion message that object base station sends in the first Preset Time, the process that source base station confirmation UE is switched to object base station goes wrong, UE cannot be switched to object base station, now source base station active termination handoff procedure, the configuration information of Zhong Fu community, source of release base station, control UE reporting measurement reports again, again to initiate the handoff procedure of UE.

In the present invention simultaneously, reconfigure when UE does not complete for some reason, and when not establishing a communications link with object base station, the present invention can also comprise UE and initiatively report switch failure information to object base station, now this switch failure information is transmitted to source base station by object base station, after source base station receives switch failure information, the configuration information of Zhong Fu community, source of release base station.

Embodiment three

Refer to Fig. 3, it illustrates another flow chart of a kind of changing method based on carrier aggregation provided by the invention, the method is applied to object base station, specifically comprises:

Step 301, object base station receives the handover request message that source base station sends.Wherein, described handoff request message draws together main plot, source mark, object main plot mark, UE mark and candidate list.

Preferably, described handover request message can also comprise in source base station and be polymerized auxiliary cell information.

Step 302, object base station, according to object main plot mark, judges whether object main plot meets and switches requirement.If object main plot meets switch requirement, perform step 303, otherwise perform step 308.

Concrete, judge whether object main plot meets switching requirement and can be specially the whether satisfied switching requirement of the signal quality judging object main plot.

In actual application, after object base station receives the handover request message that source base station sends, first set up transient node and carry out resource examination & verification, what resource examination & verification related generally to is that whether legal the parameter information sent source base station carry out judgement.Object main plot is completed with before the configuration being polymerized auxiliary community in object base station, all parameters that source base station sends are all leave in this transient node temporarily, complete object main plot with after the configuration being polymerized auxiliary community in object base station, the parameter information sent by source base station is saved in the internal memory of object base station, deletes this transient node simultaneously.

Step 303, object base station is determined to be polymerized auxiliary community according to candidate list.

The present invention selects part or all of community to be defined as being polymerized auxiliary community from the candidate list that source base station sends.Specifically as shown in Figure 3 a, step 303 can comprise:

Step 3031, does not support carrier aggregation by candidate list, and/or the community deletion that load is high.

In this step, first can will not support that the community of carrier aggregation is deleted from candidate list, community higher for load deleted, or first community higher for load is being deleted from candidate list, will not support that the community of carrier aggregation is deleted.

Step 3032, by community remaining in candidate list according to the signal quality auxiliary community of selective polymerization from high to low.Wherein, signal quality comprises RSRP (Reference Signal Receiving Power, Reference Signal Received Power) or RSRQ (ReferenceSignalReceivingQuality, Reference Signal Received Quality).

In like manner, the way of realization of the candidate list finally determined in the present embodiment is also as shown in table 1 below:

Table 1

CellID

PCI

Frequency

RSRP

RSRQ

ECGI

In addition, the present invention is in order to after ensureing that UE is switched to object base station, and service traffics keep previous level, reduces the impact switching and bring, when determining to be polymerized auxiliary community according to candidate list, the number of being polymerized auxiliary community should be less than or equal in source base station the number of being polymerized auxiliary community.Preferably, in order to ensure the normal transmission of business, the number of being polymerized auxiliary community in object base station can be selected identical with the number n being polymerized auxiliary community in source base station.After being screened by above-mentioned steps 3031, in candidate list, remaining community was for both to support carrier aggregation, be again the low community of load, now the good n of a signal quality community can be selected in candidate list from high to low as the community that will be polymerized according to signal quality.Certainly, if remaining community number is less than n in candidate list, then communities all in candidate list are defined as the auxiliary community of polymerization preparing polymerization.

Step 304, configuration purpose main plot, object base station.

Particularly, configuration purpose main plot, object base station mainly comprises object base station local mac (mediaAccess control, media access) layer, PDCP (Packet Data Convergence Protocol, PDCP) layer, the parameter configuration of DSP (digital signal processing, Digital Signal Processing) layer.

Step 305, object base station configures the auxiliary community of polymerization successively.

After completing the configuration of object main plot, send the configuring request of the auxiliary community of polymerization one by one, to configure the auxiliary community of polymerization successively.

Step 306, object base station sends switching request acknowledgement message to source base station.Wherein, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

In actual application, can not ensure that the auxiliary community of all polymerizations selected all normally completes configuration, after only having partially polymerized auxiliary community to complete configuration, only the configuration information of auxiliary for the polymerization of configuration successful community is sent to source base station, discharges the auxiliary community of polymerization of configuration failure.

Preferably, the reconfiguration information of being polymerized auxiliary community can also be comprised in source base station in switching request acknowledgement message.The reconfiguration information of being polymerized auxiliary community in described source base station is used for, and after receiving in source base station the reconfiguration information of being polymerized auxiliary community, according to the reconfiguration information of being polymerized auxiliary community in source base station, is polymerized auxiliary cell information in source of release base station at UE.

Step 307, object base station receives the handoff completion message that UE sends, and activates the auxiliary community of polymerization of configuration successful, this handoff completion message is forwarded to source base station simultaneously.

Particularly, triggered when activating the auxiliary community of the polymerization of configuration successful by MAC layer, 3GPP agreement regulation is polymerized after auxiliary community has been set up and is in unactivated state, and MAC layer will decide when to activate this community according to business demand.

Step 308, object base station directly sends and switches refuse information to source base station.

When object base station judge object main plot do not meet switching require time, object base station directly to source base station send switch refuse information, with inform source base station object main plot do not allow or do not support switch.

Embodiment four

On the basis of above-described embodiment three, refer to Fig. 4, it illustrates another flow chart of a kind of changing method based on carrier aggregation provided by the invention, in the present embodiment, after completing the auxiliary cell configuration of polymerization, method also comprises:

Step 401, object base station judges in the second Preset Time, whether receive the confirmation of being polymerized auxiliary community.If receive the confirmation of being polymerized auxiliary community in the second Preset Time, perform step 402, if do not receive the confirmation of being polymerized auxiliary community in the second Preset Time, perform step 403.

Wherein, the second Preset Time can be arranged according to actual needs flexibly.

Step 401 can comprise particularly, after object base station completes the auxiliary cell configuration of polymerization, start timer.Carry out timing by timer to judge whether to reach the second Preset Time.

Step 402, determines to be polymerized the success of auxiliary cell configuration.

Step 403, determines to be polymerized the failure of auxiliary cell configuration, the auxiliary cell information of polymerization of release configuration failure, and is deleted from candidate list auxiliary for the polymerization of configuration failure community.

Step 404, determines that behind the auxiliary community of polymerization of deletion configuration failure, the candidate list be made up of the auxiliary community of the polymerization of configuration successful is final candidate list.

Object base station in the present invention is by judging whether receive the confirmation of being polymerized auxiliary community in the second Preset Time, and judge which is polymerized the success of auxiliary cell configuration, which is polymerized the failure of auxiliary cell configuration.When being polymerized the success of auxiliary cell configuration, determine the auxiliary cell configuration success of this polymerization, and its configuration information is sent to source base station, when being polymerized the failure of auxiliary cell configuration, determine the auxiliary cell configuration failure of this polymerization, the auxiliary cell information of polymerization of release configuration failure, and auxiliary for the polymerization of configuration failure community is deleted from candidate list.Now, determine that behind the auxiliary community of polymerization of deletion configuration failure, the candidate list be made up of the auxiliary community of the polymerization of configuration successful is final candidate list.When the equal configuration failure in the auxiliary community of all polymerizations, the configuration information of object main plot is only sent to source base station by object base station.

Embodiment five

For the ease of clearer description technical scheme of the present invention, the existing process with the information interaction of source base station, object base station and UE three of inventor is described in detail, and as shown in Figure 5, comprising:

Step 501, source base station receives the measurement report that UE reports.

Step 502, source base station, according to measurement report, generates candidate list.

Step 503, source base station judges whether object main plot meets and switches requirement.When object main plot meet switching require time, perform step 504, otherwise return step 501.

Step 504, source base station sends handover request message to object base station.Described handoff request message is drawn together in main plot, source mark, object main plot mark, UE mark, candidate list and source base station and is polymerized auxiliary cell information.

Step 505, object base station receives the handover request message that source base station sends.

Step 506, object base station, according to object main plot mark, judges whether object main plot meets and switches requirement.If object main plot meets switch requirement, perform step 507, otherwise perform step 517.

Step 507, object base station is determined to be polymerized auxiliary community according to candidate list.

Step 508, configuration purpose main plot, object base station.

Step 509, object base station configures the auxiliary community of polymerization successively.

Step 510, object base station sends switching request acknowledgement message to source base station.Wherein, described switching request acknowledgement message comprises the reconfiguration information of being polymerized auxiliary community in the configuration information of object main plot, the configuration information of the auxiliary community of polymerization of configuration successful and source base station.

Step 511, source base station receives the switching request acknowledgement message that object base station sends.

Step 512, source base station sends switching command to UE.Wherein said switching command comprises the reconfiguration information of being polymerized auxiliary community in the configuration information of object main plot, the configuration information of the auxiliary community of polymerization of configuration successful and source base station.

Step 513, UE reshuffles new object main plot and the auxiliary community of polymerization, according to the auxiliary cell information be polymerized in source base station in the reconfiguration information source of release base station of auxiliary community according to the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

Step 514, UE sends and handovers complete message to object base station.

Step 515, object base station receives the handoff completion message that UE sends, and activates the auxiliary community of polymerization of configuration successful, this handoff completion message is forwarded to source base station simultaneously.

Step 516, source base station receives handoff completion message, the main plot information of source of release base station and auxiliary cell information.

Step 517, object base station directly sends and switches refuse information to source base station.

Step 518, source base station receives and switches refuse information, the configuration information of Zhong Fu community, source of release base station, and control UE reporting measurement reports again.

In actual application, the carrier aggregation changing method of LTE system comprises in LTE system the switching switched and between LTE system and different system.Wherein, switch in LTE system to comprise the base station in and switch between switching and base station, and between base station, switch the switching etc. between base station that the switching between the base station that also comprises and being connected by X2 interface is connected with by S1 interface.The handoff procedure that what the switching flow that previous embodiment of the present invention describes related generally to is between base station, similarly, the implementation for the handoff procedure between the base station that the handoff procedure in base station and the above embodiment of the present invention provide is similar.

As shown in Figure 6, it illustrates the structural representation of base station in the present invention.Particularly, base station comprises three veneers (BPU) and a CCU.One of them BPU can set up at most four communities.What previously described implementation related to is the cell aggregation on same BPU, and the traffic scheduling between aggregation cell has all been come by main plot.When the community of being polymerized is on same BPU plate, traffic assignments and the scheduling of each community can be sent in real time by internal interface.If but be polymerized auxiliary community and main plot not on same BPU time, just need have relevant interface and mark to carry out the information of finishing service scheduling between each BPU, the high-speed channel between the defeated business information of its tendency to develop needs by plate transmits.

In the present embodiment, the present invention specifies that all business information all will realize scheduling by main plot by the MAC layer of main plot, as shown in Figure 7.Therefore the present invention is when to chain of command CC block configuration, needs the configuration information issuing main plot respectively to different Ban Jianfu community, facilitates main plot to the traffic scheduling of other Ban Neifu community and communication.

Therefore based on described in above, in the present invention, source base station can also comprise after receiving the measurement report that UE reports: source base station judges the switching type of UE.Described switching type comprises X2 and switches, and switches in base station, S1 switching and auxiliary cell merge etc.Determine the switching type of UE at source base station after, switching type is carried in handover request message and issues object base station, process operation to make object base station accordingly according to switching type execution.

For object base station, after object base station receives the handover request message of source base station transmission, this handover request message can be sent to chain of command CC by object base station, the configuration information of object main plot mark, UE mark and channel to be accessed is sent to the MAC layer of object main plot by chain of command CC, MAC layer is carried out resource examination & verification and is distributed new RNTI, carries out local E-RAB configuration.Audit rear chain of command CC will be configured PDCP, MAC and PHY (physical layer) respectively, and carry out the configuration of GTP (GPRSTunnelling Protocol, GPRS Tunnel Protocol) forwarding tunnel.Chain of command CC also by the correlated identities of downlink and uplink interfaces by object main plot, comprises the carrying of object main plot, and the information such as link issue the auxiliary community of each veneer, facilitates the communication between major-minor community between different veneer.

Particularly, as shown in Figure 8, it illustrates another flow chart of a kind of changing method based on carrier aggregation provided by the invention;

Step 601, the RRC (Radio Resource Control, radio resource control) in source base station is to the control information of UE sending measuring.The measuring range of its UE contains the adjacent area of all Serving cells and Serving cell.

Step 602, UE measures, and to source base station reporting measurement reports.

Step 603, source base station receives measurement report, and according to measurement report, generates candidate list.RRM (Radio Resource Management, RRM) simultaneously in its source base station judges the switching type of UE.

Particularly in the present embodiment, judge that the switching type of UE is that in base station, main plot switches, and then search the information of object main plot, and judge whether object main plot belongs to community in object base station.

Inventor it should be noted that herein, and in the present embodiment, source base station is according to measurement report, and the implementation generating candidate list is similar with previous embodiment, and its difference is that the flow process of source base station object base station is all carried out in same first order station.

Step 604, source base station judges the UE switching type obtained according to RRM information and RRM, obtain the information of object main plot, judges whether object main plot meets and switches requirement.When object main plot meet switching require time, perform step 605, otherwise return step 601.

Step 605, source base station sends handover request message to object base station.Described handoff request message is drawn together in main plot, source mark, object main plot mark, UE mark, candidate list and source base station and is polymerized auxiliary cell information.

Step 606, object base station receives the handover request message that source base station sends.

Step 607, the chain of command CC in object base station and the MAC layer of object main plot carry out information interaction, for the purpose of main plot distribute new RNTI, and simultaneously to object main plot carry out this locality configuration.In addition, chain of command CC returns main plot, source and sends SN status request message, the SN state of main plot, acquisition request source.

Step 608, after main plot, source receives SN status request message, to the SN status response message of chain of command CC transmission source main plot.Described SN status response message is for representing the SN state of main plot, current source.

Step 609, after chain of command CC receives SN status response message, sends RRC reallocation message to UE.New main plot information is comprised, new auxiliary cell information and the auxiliary cell information that will delete in reallocation message.Then SN status request message is sent to object main plot.

Step 610, object main plot completes local SN and HFN according to SN status request message and configures, and returns configure-ack message to chain of command CC.Now object main plot can buffer memory from the UE up-downgoing data of main plot, source.

Step 611, chain of command CC sends tunnel configuration modify request messages to GTP, source of configuration main plot to object main plot forwarding tunnel and carry out the configuration of GTP forwarding tunnel.GTP according to request message forwarding tunnel and return tunnel forward acknowledge message.

Step 612, chain of command CC sends up-downgoing data forwarding request to main plot, source, and main plot, source forwards up-downgoing data to object main plot, and returns up-downgoing data retransmission response message.

Step 613, buffer memory is understood from the data of main plot, source until the RRC connection reprovision receiving UE starts to forward up-downgoing data to object main plot after completing message in target main plot.

Step 614, chain of command CC sends EndMarker mark to object main plot after receiving up-downgoing data transmission response.

Step 615, object main plot returns the instruction of deleting forwarding tunnel after receiving EndMarker mark, and GTP deletes the up-downgoing forwarding tunnel of main plot, source and object main plot, and then source base station deletes all resources of UE in main plot, source.

Embodiment six

Based on a kind of changing method based on carrier aggregation provided by the invention above, the present invention also provides a kind of switching device shifter based on carrier aggregation, as shown in Figure 9, comprising: the first receiving element 100, candidate list generation unit 200, first judging unit 300, first transmitting element 400, second receiving element 500 and the second transmitting element 600.Wherein,

First receiving element 100, for receiving the measurement report that UE reports.Described measurement report comprises main plot, source information, the auxiliary cell information in source, the neighboring BS information of main plot, source and the neighboring BS information of Yuan Fu community.

Candidate list generation unit 200, for according to described measurement report, generates candidate list.

First judging unit 300, switches requirement for judging whether object main plot meets.

First transmitting element 400, for judge when the first judging unit 300 object main plot meet switching require time, send handover request message to object base station.Described handoff request message draws together main plot, source mark, object main plot mark, UE mark and described candidate list.

Second receiving element 500, for receiving the switching request acknowledgement message that object base station sends.Described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful.

Second transmitting element 600, for sending switching command to UE.Described switching command comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful, to make UE after receiving described switching command, the configuration information according to the configuration information of described object main plot and the auxiliary community of polymerization of configuration successful reshuffles new object main plot and the auxiliary community of polymerization.

Wherein preferably, as shown in Figure 10, candidate list generation unit 200 specifically also comprises:

Cell list generate subelement 201, for by all communities in described measurement report according to signal quality descending, generate cell list, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ;

First deletes subelement 202, for being deleted the community not belonging to described object base station in described cell list;

Second deletes subelement 203, for by the community intermediate-frequeney point signal of frequency identical in described cell list not being best community deletion;

Determining subelement 204, is candidate list for determine to delete the community not belonging to described object base station and the community intermediate-frequeney point signal deleting identical frequency be not cell list behind best community.

Wherein, preferably, handover request message also comprises: be polymerized auxiliary cell information in source base station;

In addition, the present invention can also comprise the second judging unit 700 and information releasing unit 800.Particularly,

Second judging unit 700, for judging the handoff completion message whether receiving the transmission of described object base station in the first Preset Time;

Information releasing unit 800, for judging to receive described handoff completion message in the first Preset Time at described second judging unit 700, discharges the main plot information of described source base station and auxiliary cell information; In the first Preset Time, do not receive described handoff completion message, discharge the configuration information of described source base station Zhong Fu community, and control described UE reporting measurement reports again.

Simultaneously, refer to Figure 11, it illustrates the another kind of structural representation of a kind of switching device shifter based on carrier aggregation provided by the invention, comprising: the 3rd receiving element 1000, the 3rd judging unit 2000, be polymerized auxiliary community determining unit 3000, first dispensing unit 4000, second dispensing unit 5000, the 3rd transmitting element 6000 and the 4th receiving element 7000.Wherein,

3rd receiving element 1000, for receiving the handover request message that source base station sends, described handoff request message draws together main plot, source mark, object main plot mark, user equipment (UE) mark and described candidate list;

3rd judging unit 2000, for according to described object main plot mark, judges whether described object main plot meets and switches requirement;

Be polymerized auxiliary community determining unit 3000, for judge at described 3rd judging unit described object main plot meet switching require time, determine to be polymerized auxiliary community according to described candidate list;

First dispensing unit 4000, for configuring described object main plot;

Second dispensing unit 5000, for complete described object main plot at described first dispensing unit configuration after, configure the auxiliary community of described polymerization successively;

3rd transmitting element 6000, for after described second dispensing unit completes the auxiliary cell configuration of described polymerization, send switching request acknowledgement message to described source base station, described switching request acknowledgement message comprises the configuration information of the configuration information of object main plot and the auxiliary community of polymerization of configuration successful;

4th receiving element 7000, for receiving the handoff completion message that described UE sends, activating the auxiliary community of polymerization of described configuration successful, and described handoff completion message is forwarded to described source base station.

Wherein, handover request message also comprises: be polymerized auxiliary cell information in source base station;

Preferably, as shown in figure 12, be polymerized auxiliary community determining unit 3000 specifically to comprise:

3rd deletes subelement 3001, for not supporting carrier aggregation by described candidate list, and/or the community deletion that load is high;

Chooser unit 3002, for by community remaining in described candidate list according to the signal quality auxiliary community of selective polymerization from high to low, described signal quality comprises Reference Signal Received Power RSRP or Reference Signal Received Quality RSRQ.

Preferably, the number of being polymerized auxiliary community is less than or equal to the number of being polymerized auxiliary community in described source base station.

In addition, the present invention can also comprise:

4th judging unit 8000, for judging the confirmation whether receiving the auxiliary community of described polymerization in the second Preset Time;

Determining unit 9000, for when described 4th judging unit 8000 judges the confirmation receiving the auxiliary community of described polymerization in the second Preset Time, determines the auxiliary cell configuration success of described polymerization; When not receiving the confirmation of the auxiliary community of described polymerization in the second Preset Time, determine the auxiliary cell configuration failure of described polymerization, the auxiliary cell information of polymerization of release configuration failure, and auxiliary for the polymerization of configuration failure community is deleted from described candidate list; Determine that behind the auxiliary community of polymerization of deletion configuration failure, the candidate list be made up of the auxiliary community of the polymerization of configuration successful is final candidate list.

It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.

Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.

Be described in detail being polymerized switching method and apparatus between a kind of changing method based on carrier aggregation provided by the present invention, plate above, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. based on a changing method for carrier aggregation, it is characterized in that, comprising:

According to described measurement report, generate candidate list;

Judge whether object main plot meets and switch requirement;

2. method according to claim 1, is characterized in that, described according to described measurement report, generates candidate list and comprises:

3. method according to claim 1, is characterized in that, described handover request message also comprises: be polymerized auxiliary cell information in source base station;

4. the method according to any one of claim 1-3, is characterized in that, after described transmission switching command to described UE, described method also comprises:

5. based on a changing method for carrier aggregation, it is characterized in that, comprising:

Configure described object main plot;

6. method according to claim 5, is characterized in that, described handover request message also comprises: be polymerized auxiliary cell information in source base station;

7. the method according to claim 5 or 6, is characterized in that, describedly determines that being polymerized auxiliary community comprises according to described candidate list:

8. method according to claim 7, is characterized in that, the number of the auxiliary community of described polymerization is less than or equal to the number of being polymerized auxiliary community in described source base station.

9. method according to claim 7, is characterized in that, after completing the auxiliary cell configuration of described polymerization, described method also comprises:

10. be polymerized a changing method between the plate based on carrier aggregation, it is characterized in that, comprising:

11. 1 kinds based on the switching device shifter of carrier aggregation, is characterized in that, comprising:

12. devices according to claim 11, is characterized in that, described candidate list generation unit comprises:

13. devices according to claim 11, is characterized in that, described handover request message also comprises: be polymerized auxiliary cell information in source base station;

14. devices according to any one of claim 11-13, is characterized in that,

Second judging unit, for judging the handoff completion message whether receiving the transmission of described object base station in the first Preset Time;

15. 1 kinds based on the switching device shifter of carrier aggregation, is characterized in that, comprising:

First dispensing unit, for configuring described object main plot;

16. devices according to claim 15, is characterized in that, described handover request message also comprises: be polymerized auxiliary cell information in source base station;

17. devices according to claim 15 or 16, it is characterized in that, described polymerization auxiliary community determining unit comprises:

18. devices according to claim 15 or 16, is characterized in that, also comprise: