CN102740385B - Method and apparatus for community switching - Google Patents

Method and apparatus for community switching Download PDF

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Publication number
CN102740385B
CN102740385B CN201110089543.1A CN201110089543A CN102740385B CN 102740385 B CN102740385 B CN 102740385B CN 201110089543 A CN201110089543 A CN 201110089543A CN 102740385 B CN102740385 B CN 102740385B
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China
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csi
rs
described
target
terminal unit
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CN201110089543.1A
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CN102740385A (en
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常俊仁
李亚娟
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists

Abstract

The invention discloses a kind of method and apparatus for community switching.The method includes: obtain the measurement result that reference signal is measured by terminal unit;According to this measurement result, determine the target BS that community switches;Handover request message is sent to this target BS;Receiving the switching request acknowledgement message that this target BS sends, this switching request acknowledgement message carries the configuration information of at least one target CSI RS, or the confirmation instruction confirming the configuration information of at least one the CSI RS carried in this handover request message.This device includes the first acquisition module, first determines module, the first sending module and receiver module.The method and apparatus for community switching of the embodiment of the present invention, before and after can making community switching, terminal unit can use multiple website, so that terminal unit can keep the seriality of business in handoff procedure simultaneously.

Description

Method and apparatus for community switching

Technical field

The present invention relates to communication technical field, particularly relate in the communications field for community switching method and Device.

Background technology

In long evolving system (Long Term Evolution, referred to as " LTE ") R11 version, Be introduced into a kind of new operation scene, i.e. cooperative multipoint transmission/reception (Coordinated Multi-point, Referred to as " CoMP ").The key benefit performing cooperative multipoint transmission is to improve data transmission Speed, such as, can carry out the transmission etc. of video traffic glibly, thus improve the user satisfaction of user. At present, four kinds of concrete scenes are had to need emphasis to study, it may be assumed that

Scene 1: the CoMP scene in homogenous networks website;

Scene 2: there is high power far-end without the end of a thread (Remote Radio Head, referred to as " RRH ") Homogeneous network scene;

Scene 3: there is the heterogeneous network scene of low-power RRH, in this scenario, there is low sending out The Microcell (Pico Cell) penetrating power is subscriber equipment (User together with macrocell (Macro Cell) Equipment, referred to as " UE ") service is provided, the feature of this scene is that each Microcell is little with grand Being attached by high speed fibre between district, its transmission delay can be ignored, and each RRH covers Microcell be an independent community, there is the most independent cell ID (Cell ID);

Scene 4: there is the heterogeneous network scene of low-power RRH, in this scenario, there is low sending out The micro-website (Pico Point) penetrating power provides service for UE together with macro station point (Macro Point), This scene 4 and scene 3 have in common that Microcell (or website) that RRH covers and macrocell (or Website) between all be use high speed fibre connect, difference is each RRH (the most micro-website) Not being an independent community, this website slightly does not has an independent Cell ID, but with macro station point one Rise and share same Cell ID.

In above-mentioned scene 3 and 4, when carrying out the data transmission of CoMP pattern between network and UE, Different websites is by channel state information reference signals (Channel State Information different for transmission Reference Signal, referred to as " CSI-RS "), to support that UE passes through the respective CSI-RS of multiple website Carry out channel measurement etc..

But, current cell switching method does not support to carry out the switching of multiple website simultaneously.Therefore, exist Under the scene of cooperative multipoint transmission/reception, if it occur that subscriber equipment uses multiple websites to enter during the switching of community Row data are transmitted, then owing to subscriber equipment can not be simultaneously switching to multiple website, so that user sets The seriality of standby business is severely impacted.

Summary of the invention

To this end, embodiments provide a kind of method and apparatus for community switching, it is possible to make Terminal unit keeps the seriality of business in handoff procedure.

On the one hand, embodiments providing a kind of method for community switching, the method includes: Obtain the measurement result that reference signal is measured by terminal unit;According to this measurement result, determine community The target BS of switching;Handover request message is sent to this target BS;Receive what this target BS sent Switching request acknowledgement message, what this switching request acknowledgement message carried that this target BS determines can be at this mesh The configuration information of at least one target CSI-RS that is that mark base station is configured or that be activated, or to this switching In request message the source base station that carries recommend can this target BS be configured or be activated to The configuration information of a few CSI-RS carries out the confirmation instruction confirmed.

On the other hand, embodiments providing a kind of method for community switching, the method includes: Receive the handover request message that source base station sends;Sending switching request acknowledgement message to this source base station, this is cut Change request confirm message bearing target BS determine can this target BS be configured or be activated The configuration information of at least one target CSI-RS, or to this source base carried in this handover request message Stand recommend can this target BS be configured or the configuration letter of at least one CSI-RS of being activated Breath carries out the confirmation instruction confirmed.

Another further aspect, embodiments provides a kind of device for community switching, and this device includes: First acquisition module, for obtaining the measurement result that reference signal is measured by terminal unit;First is true Cover half block, for according to this measurement result, determines the target BS that community switches;First sending module, For sending handover request message to this target BS;Receiver module, is used for receiving this target BS and sends Switching request acknowledgement message, what this switching request acknowledgement message carried that this target BS determines can be at this The configuration information of at least one target CSI-RS that is that target BS is configured or that be activated, or this is cut Change that the source base station that carries in request message recommends can this target BS be configured or be activated The configuration information of at least one CSI-RS carries out the confirmation instruction confirmed.

Another further aspect, embodiments provides a kind of device for community switching, and this device includes: First receiver module, for receiving the handover request message that source base station sends;Sending module, for this Source base station sends switching request acknowledgement message, the energy that this switching request acknowledgement message carrying target BS determines Reach the configuration information of at least one target CSI-RS that is that be configured or that be activated at this target BS, or This source base station of carrying in this handover request message is recommended can this target BS be configured or The configuration information of at least one CSI-RS being activated carries out the confirmation instruction confirmed.

Based on technique scheme, the method and apparatus for community switching of the embodiment of the present invention, pass through Target BS be terminal equipment configuration at least one can target BS be configured or be activated CSI-RS so that before and after the switching of community, terminal unit can use multiple website simultaneously, so that terminal Equipment can keep the seriality of business in handoff procedure.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in the embodiment of the present invention The required accompanying drawing used is briefly described, it should be apparent that, drawings described below is only this Some embodiments of invention, for those of ordinary skill in the art, are not paying creative work Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic diagram of CSI-RS configuration under cooperative multipoint transmission/reception scene.

Fig. 2 is the indicative flowchart of the method for community switching according to embodiments of the present invention.

Fig. 3 is the indicative flowchart of the method switched for community according to another embodiment of the present invention.

Fig. 4 is the indicative flowchart of the method for community switching according to yet another embodiment of the invention.

Fig. 5 is the indicative flowchart of the method for community switching according to yet another embodiment of the invention.

Fig. 6 is the indicative flowchart of the method for community switching according to yet another embodiment of the invention.

Fig. 7 is the indicative flowchart of the method for community switching according to yet another embodiment of the invention.

Fig. 8 is the schematic block diagram of the device for community switching according to embodiments of the present invention.

Fig. 9 is the schematic block diagram of the device switched for community according to another embodiment of the present invention.

Figure 10 is the schematic block diagram of the device for community switching according to yet another embodiment of the invention.

Figure 11 is the schematic block diagram of the device for community switching according to yet another embodiment of the invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment is a part of embodiment of the present invention, and not It is whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound The every other embodiment obtained on the premise of the property made work, all should belong to the scope of protection of the invention.

When carrying out the data transmission of CoMP pattern between network and terminal unit, different websites will pass Defeated different channel state information reference signals, respective to support that terminal unit passes through multiple website CSI-RS carries out channel measurement etc., so that terminal unit can use multiple corresponding with CSI-RS Website carries out data transmission.Terminal unit is also generally referred to as UE.Fig. 1 show cooperative multipoint transmission/ Receive the schematic diagram of CSI-RS configuration under scene, as it is shown in figure 1, in macro station point, CSI-RS will be configured Configuration (CSI-RS Configuration, referred to as " CSI-RS Config ") 0 carries out the biography of CSI-RS Defeated, and in other two micro-websites, CSI-RS configuration 1 and CSI-RS configuration 2 will be respectively configured Carry out the transmission of CSI-RS.

Fig. 2 is the indicative flowchart of the method 100 for community switching according to embodiments of the present invention. As in figure 2 it is shown, the method 100 includes:

In S110, obtain the measurement result that reference signal is measured by terminal unit.

This reference signal can include the channel condition information reference of one or more communities of neighbor base stations Signal (CSI-RS) and cell reference signals (Cell Reference Signaling, referred to as " CRS ") In at least one.Such as, reference signal includes one or more CSI-RS, and reference signal can also Including one or more CRS, i.e. source base station obtain terminal unit to one or more CSI-RS and/or The measurement result that CRS measures.This neighbor base stations refers to source base station and the base station adjacent with source base station. This measurement result includes the Reference Signal Received Power (Reference of one or more reference signal Signaling Receiving Power, referred to as " RSRP ") and/or Reference Signal Received Quality (Reference Signaling Receiving Quality, referred to as " RSRQ ").Such as, knot is measured Fruit includes RSRP and/or RSRQ of one or more CSI-RS.

In S120, according to this measurement result, determine the target BS that community switches.

Source base station is according to RSRP and/or RSRQ of reference signal, it may be determined that the target base of community switching Stand.Should be understood that the measurement result that reference signal is measured by terminal unit is that source base station determines target base One of key factor stood rather than single factor, source base station can also determine mesh with reference to other factors The mark loading condition of base station, such as target BS, QoS (the Quality of of terminal unit Service, referred to as " QoS ") requirement etc..

In S130, send handover request message to this target BS.

It is one or more CSI-RS that target BS is recommended that this handover request message can carry source base station Configuration information, and/or the measurement result of these one or more CSI-RS.Alternatively, this handover request Message can also include the configuration information of CSI-RS that terminal unit is configured at source base station or is activated, The ID of such as CSI-RS, or the quantity etc. of CSI-RS.It addition, this handover request message can also be held The support information of the CoMP ability of mounted terminal equipment.The CSI-RS that such as terminal unit can be supported simultaneously Quantity information, or terminal unit can support simultaneously transmission antenna or transmission website quantity information Deng.Alternatively, this handover request message also includes the data pack buffer status information and/or mutually of terminal unit Networking protocol (Intemet Protocol, referred to as " IP ") throughput information.

In S140, receiving the switching request acknowledgement message that this target BS sends, this handover request is true Recognize that this target BS of message bearing determines can this target BS be configured or be activated at least The configuration information of one target CSI-RS, or the source base station carried in this handover request message is recommended Can this target BS be configured or the configuration information of at least one CSI-RS that is activated carry out really The confirmation instruction recognized.

Target CSI-RS refers to that the terminal unit that target BS determines can be configured or be activated at Target Station CSI-RS.The configuration information of this reference signal includes: the identification information of reference signal, reference signal Port numbers, send the time-frequency location of reference signal, send the cycle of reference signal, the joining of reference signal At least one in the positional information of the website put mark, sending reference signal.

The embodiment of the present invention for community switching method, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

In embodiments of the present invention, source base station by configuring to terminal unit sending measuring, and can receive Terminal unit measures and sends the mode of measurement result according to this measurement configuration, obtains reference signal Measurement result.Specifically, as it is shown on figure 3, the figure shows according to another embodiment of the present invention for The indicative flowchart of the method 200 of community switching.The method 200 includes:

S210, source base station obtains the configuration information of the reference signal of neighbor base stations;

S220, source base station sends measurement configuration according to this configuration information to terminal unit;

S230, source base station receives and obtains the measurement result that this terminal unit sends, and this measurement result is by this This reference signal is measured according to this measurement configuration and obtains by terminal unit;

S240, source base station determines, according to this measurement result, the target BS that community switches;

S250, source base station sends handover request message to this target BS;

S260, source base station receives the switching request acknowledgement message that this target BS sends, and this handover request is true Recognize the configuration information of at least one target CSI-RS of message bearing, or carry in this handover request message The configuration information of at least one CSI-RS carry out the confirmation instruction that confirms.

This measurement configuration can include the cell identity information of one or more community, and each community The configuration information of one or more reference signals.Terminal unit can be to reference signal according to this measurement configuration Measure, and to source base station feedback measurement.S230 to S260 in the method 200 and method S110 to S140 in 100 is similar to, and does not repeats them here.

In embodiments of the present invention, reference signal mainly includes CSI-RS and CRS this two classes, therefore source Base station determines that the measurement result referenced by target BS mainly includes the measurement result of CSI-RS and CRS Measurement result.Both of these case will be respectively directed to below, to cutting for community according to embodiments of the present invention The method changed is described in detail.

Fig. 4 shows the schematic of the method 300 for community switching according to yet another embodiment of the invention Flow chart.

As shown in Figure 4, in S310, between source base station and target BS, mutual respective CSI-RS joins Confidence ceases, and specifically, source base station and target BS can carry out CSI-RS configuration letter by X2 interface The exchange of breath.The configuration information of this CSI-RS refers to the information of the CSI-RS of source base station or target BS use. Alternatively, the configuration information of this CSI-RS includes CSI-RS sequence, sends the time-frequency location of CSI-RS, Send the cycle of CSI-RS, the configuration identifier of CSI-RS, send the positional information of the website of CSI-RS In at least one.

Should be understood that in S310, source base station does not the most determine the target BS that community switches, and therefore exists Target BS during Gai refers to the base station being likely to become community switching, and normally, this target BS can To refer to the base station adjacent with source base station.I.e. in S310, hand between source base station with each adjacent base station The configuration information of mutual respective CSI-RS,

After the configuration information of the CSI-RS of source base station acquisition neighbor base stations, source base station is believed according to this configuration Cease to send to terminal unit and measure configuration, as shown in the S320 in Fig. 4.Wherein, this neighbor base stations bag Including this source base station and other base station adjacent with source base station, this measurement configuration then includes the one of neighbor base stations Individual or the cell identity information of multiple community, and the configuration of one or more CSI-RS of each community Information.

In S330, these one or more CSI-RS are measured by terminal unit according to this measurement configuration, And receive and obtain, to source base station feedback measurement, i.e. source base station, this measurement knot that terminal unit sends Really.This measurement result includes the Reference Signal Received Power of these one or more CSI-RS and/or with reference to letter Number quality of reception.In embodiments of the present invention, this measurement result is to measure for a long time for CSI-RS Obtained average measurement value.

In S340, source base station make switching determine, and to target BS send switching (Handover, Referred to as " HO ") request message, this HO request message includes that source base station is the end that target BS is recommended The configuration information of one or more CSI-RS that end equipment can be configured at target BS or be activated, And/or terminal unit source base station be configured or the quantity information of CSI-RS that is activated.Should be understood that This target BS only refers to that source base station determines the base station switched over.

Alternatively, source base station, according to the CSI-RS measurement result in measurement result, determines a CSI-RS Set, and to this target BS send handover request message, this handover request message bearing this first The configuration information of each CSI-RS in CSI-RS set, and/or terminal unit source base station be configured or quilt The quantity information of the CSI-RS activated.Alternatively, this handover request message can also carry this first The measurement result of each CSI-RS in CSI-RS set.Oneth CSI-RS set refers to by terminal unit Measure CSI-RS in, source base station according to this measurement result be this terminal unit select at this target base Stand one or more CSI-RS that are that may be configured or that be activated.

Alternatively, this handover request message also carries the support of cooperative multipoint transmission ability of this terminal unit Information, the data pack buffer status information of terminal unit, IP throughput information, the 2nd CSI-RS set In the configuration information of each CSI-RS, the 3rd CSI-RS set in each CSI-RS configuration information in extremely Few one.Wherein, the 2nd CSI-RS set refer in this most measured CSI-RS, except this first One or more CSI-RS outside each CSI-RS in CSI-RS set;3rd CSI-RS set refers to In the CSI-RS of each website that neighbor base stations controls, one or more CSI-RS to be measured.

Should be understood that the 2nd CSI-RS set can be in the most measured CSI-RS, except first All CSI-RS has been surveyed, it is also possible in addition to a CSI-RS set outside CSI-RS set A part has surveyed CSI-RS.Also, it is to be understood that, the 3rd CSI-RS set can be neighbor base stations In the CSI-RS of each website controlled, whole CSI-RS to be measured, it is also possible to be part to be measured CSI-RS。

After target BS receives this HO request message, recommend based on source base station one of target BS Or the configuration information of multiple CSI-RS, determine final one or more targets for terminal equipment configuration CSI-RS.That is, target BS can receive the CSI-RS that source base station is recommended completely, it is also possible to part connects Receive source base station recommend CSI-RS, it is also possible to select except source base station recommendation CSI-RS in addition to other CSI-RS, as target CSI-RS for terminal equipment configuration.

Thus, in S350, source base station receives the switching request acknowledgement message that target BS sends, should Switching request acknowledgement message is for confirming this HO request message, and this HO request confirmation disappears The configuration information of each target CSI-RS in breath carrying first object CSI-RS set, or handover request is disappeared The configuration information of at least one CSI-RS carried in breath carries out the confirmation instruction confirmed, this first object CSI-RS set refers at least one target CSI-RS that switching request acknowledgement message carries, this first object In CSI-RS set, each target CSI-RS comes from a CSI-RS set, the 2nd CSI-RS collection At least one in conjunction, the 3rd CSI-RS set.

Such as, when the configuration information of each CSI-RS in HO request message bearing the oneth CSI-RS set Time, if target BS accepts the CSI-RS that source base station is recommended completely, then this HO request confirmation disappears The first object CSI-RS collection of breath carrying is combined into a CSI-RS set;Or this HO asks to confirm Message can include that at least one CSI-RS recommended source base station in handover request message accepts completely Confirmation instruction (ACK).If target BS part accepts the CSI-RS that source base station is recommended, then should HO request confirms that the first object CSI-RS collection of message bearing is combined into of a CSI-RS set Point, and all targets CSI-RS in first object CSI-RS set are the most measured.

In HO request this first, second, and third CSI-RS of message bearing gathers, each CSI-RS's joins During confidence breath, if target BS part accepts the CSI-RS that source base station is recommended, then this HO asks Confirm that target CSI-RS in the first object CSI-RS set of message bearing includes the most measured CSI-RS and/or CSI-RS to be measured.

In S360, source base station sends switching command message to terminal unit, and this switching command message is held Carry the configuration information of each target CSI-RS in this first object CSI-RS set.

Alternatively, receiving, at source base station, the HO request confirmation message that target BS sends, carrying is to switching The configuration information of at least one CSI-RS carried in request message carries out the situation confirming instruction confirmed Under, source base station indicates according to this confirmation, sends switching command message to terminal unit, and this switching command disappears Breath carries the configuration information of this at least one CSI-RS carried in this handover request message.

Alternatively, this switching command message also carries this terminal unit of instruction the need of obtaining and target First instruction of Timing Advance (Timing Advance, referred to as " TA value ") corresponding for CSI-RS Information or indicate this terminal unit to obtain second the referring to of order of the TA value corresponding with target CSI-RS Show information or target CSI-RS group information or the configuration information of the main CSI-RS of target or for this Terminal unit calculates the reference CSI-RS set of TA value corresponding to target CSI-RS.

Wherein, target CSI-RS group refers to share each target CSI-RS formation of same TA value Group, target CSI-RS group information includes information and this group member of target CSI-RS group Information, the identification information of such as target CSI-RS group and the identification information of target CSI-RS.According to Target CSI-RS group information, obtains the TA value corresponding with target CSI-RS group, need not divide TA value that Huo Qu be not corresponding with each target CSI-RS in this group, thus can save overhead.

CSI-RS includes that main CSI-RS, main CSI-RS refer to covering model in each website that neighbor base stations controls Enclose the CSI-RS of station transmission of maximum, or be the best CSI-RS of signal quality.Can certainly adopt Determine main CSI-RS in other ways.And the main CSI-RS of target refer to that target BS determines can be in target Main CSI-RS that is that base station is configured or that be activated.Then refer to that terminal unit calculates TA with reference to CSI-RS set One or more CSI-RS of descending timing reference are performed during value.Distinguishingly, main CSI-RS can be ginseng Examine CSI-RS.

Alternatively, this switching command message also carries this terminal unit of instruction to this first object CSI-RS The 3rd instruction information measured from target CSI-RS of the 3rd CSI-RS set in set.

In S370, terminal unit, according to HO command messages, performs uplink random access procedure to obtain Take the TA value corresponding with each target CSI-RS.Specifically, terminal unit can obtain multiple parallel TA value corresponding for CSI-RS.If being assigned with special lead code in terminal unit order (Preamble), then then terminal unit can receive target by sending this special Peamble The accidental access response message of base station feedback, this accidental access response message includes for terminal equipment configuration Or activate the TA value corresponding to one or more targets CSI-RS, as shown in S380.

In S380, alternatively, target BS can be according to being terminal unit in the ho command message Multiple TA values are disappeared by the order of target CSI-RS that is that configure or that activate successively at accidental access response In breath notify terminal unit, or target BS can also according in HO command messages for UE configure Or the order of the serial number of target CSI-RS activated, successively by multiple TA values at accidental access response Message notifies UE.Alternatively, target BS can also carry each in accidental access response message The identifier of target CSI-RS that TA value is corresponding, or carry the CSI-RS group that each TA value is corresponding Group identifier.

In embodiments of the present invention, if HO command messages is terminal equipment configuration target master CSI-RS, then first terminal unit can obtain the TA value that the main CSI-RS of target is corresponding.Alternatively, If HO command messages specifies the order obtaining TA value corresponding to multiple targets CSI-RS, that Terminal unit can also use the method for Stochastic accessing to obtain multiple TA values successively, or according to appointment Order perform Stochastic accessing successively to obtain TA value, or parallel initiating random access procedure is to obtain Multiple TA values.

In S390, terminal unit is after obtaining the TA value corresponding with target CSI-RS or whole After end equipment obtains the TA value that the main CSI-RS of target is corresponding, terminal unit sends HO to target BS Completion message.

In embodiments of the present invention, if system uses, and CSI-RS first configures the mode activated afterwards, So target BS is after the HO completion message receiving terminal unit feedback, activates for terminal unit and joins One or more targets CSI-RS put.Specifically, target BS can be by sending Radio Resource control Agreement processed (Radio Resource Control, referred to as " RRC ") message, medium education (Medium Access Control, referred to as " MAC ") control unit (Control Element, referred to as " CE ") Or the method for physical layer signaling, activates this one or more targets CSI-RS.If system uses It is the mode of one-step activation, then while configuring target CSI-RS in HO order, i.e. represent activation This target CSI-RS.

In embodiments of the present invention, in order to support that target BS is that terminal unit determines first object further Appropriate number of CSI-RS in CSI-RS set, source base station can carry end in handover request message The data pack buffer status information of end equipment and/or Internet protocol (IP) throughput information, so that mesh Mark base station is according to the data pack buffer status information of terminal unit and/or IP throughput information, for this terminal Equipment determines appropriate number of target CSI-RS.Specifically, the packet of terminal unit referred herein Buffer status information can be the upstream data bag buffer status information of terminal unit and downlink data packet is delayed Deposit at least one in status information.This Internet protocol (IP) throughput information can be up IP At least one in throughput information and downstream IP throughput information.

The embodiment of the present invention for community switching method, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

Fig. 5 shows the schematic stream of the method 400 switched according to yet another embodiment of the invention for community Cheng Tu.

As it is shown in figure 5, the method 400 includes:

In S410, the configuration information of source base station respective main CSI-RS mutual with adjacent base station.With Sample ground, the determination of main CSI-RS can coverage based on this CSI-RS determine, such as, select to cover The CSI-RS of the station transmission that lid is maximum is as main CSI-RS;Can also be by CSI-RS best for signal It is defined as main CSI-RS.Can certainly otherwise determine CSI-RS, the embodiment of the present invention is not It is limited to this.

In S420, source base station sends to terminal unit and measures configuration, it is intended that terminal unit to one or The CRS of multiple Target cells measures, and/or the main CSI-RS that designated terminal equipment is to Target cell Measure.

In S430, terminal unit feedback measurement report, this measurement report includes that terminal unit is to CRS And/or the measurement result that main CSI-RS measures.If being configured with main CSI-RS in S420, that This measurement report can also include the average measurements of main CSI-RS.Specifically, this measurement result Can be RSRP and/or RSRQ of main CSI-RS.

In S440, source base station is made switching and is determined.Specifically, source base station make switching determine time, The measurement result of the measurement result and/or main CSI-RS that are referred to CRS determines Target cell.Determining After Target cell, source base station sends handover request message to target BS.Alternatively, in order to support target Base station is that terminal unit selects suitable target CSI-RS, this HO request message can carry from the The configuration information of one or more CSI-RS of four CSI-RS set.4th CSI-RS set refers to neighbour Occupy the one or more CSI-RS in the CSI-RS of each website that base station controls.4th CSI-RS collection Close and include CSI-RS to be measured and/or the most measured CSI-RS, at source base station according to main CSI-RS In the case of the measurement result measured determines target BS, the 4th CSI-RS set can enter one Step includes the most measured one or more main CSI-RS.Further, in the 4th CSI-RS set These one or more CSI-RS between there is neighborhood, or these one or more CSI-RS are corresponding Transmitting station between there is neighborhood.

Alternatively, this handover request message also carries the measurement result of main CSI-RS.Alternatively, this is cut Change request message and also carry the support information of cooperative multipoint transmission ability of this terminal unit, this terminal unit Source base station be configured or be activated the configuration information of CSI-RS, this terminal unit is at source base station quilt Configuration or be activated the quantity information of CSI-RS, the data pack buffer status information of this terminal unit, At least one in IP throughput information.

In S450, target BS confirms message to source base station feedback HO request.This handover request is true Recognize message and carry the configuration information of each target CSI-RS in the second target CSI-RS set, or please to switching The configuration information seeking at least one CSI-RS carried in message carries out the confirmation instruction confirmed.This is second years old The set of target CSI-RS refers at least one target CSI-RS that switching request acknowledgement message carries.

Target CSI-RS in the set of this second target CSI-RS refers to that target BS is that terminal unit determines The one or more CSI-RS that can be configured at target BS or be activated, or one or more CSI-RS to be measured.Further, in the set of this second target CSI-RS, each target CSI-RS is permissible Come from the 4th CSI-RS set.

Alternatively, target BS can accept CSI-RS, i.e. this HO request that source base station is recommended completely Confirm the configuration information of target CSI-RS of message bearing can be source base station be terminal unit determine one Individual or the configuration information of multiple target CSI-RS to be measured.Target BS can also partly accept source base station The CSI-RS recommended, i.e. target BS are referred to the terminal unit of source base station offer at source base station The configuring condition of CSI-RS, determines target CSI-RS to be measured for terminal unit.

Alternatively, target BS is determined at source base station according to the measurement result that main CSI-RS is measured In the case of, the set of this second target CSI-RS includes the main CSI-RS of target of this target BS.

In S460, source base station sends HO command messages to terminal unit, and this HO command messages holds Carry each target CSI-RS in this second target CSI-RS set carried in this switching request acknowledgement message Configuration information;Or according to the confirmation instruction that switching request acknowledgement message is carried, send out to described terminal unit Send switching command message, this switching command message carry this handover request message is carried this at least one The configuration information of CSI-RS.

After terminal unit receives HO command messages, can start immediately target CSI-RS to be measured Measurement, it is also possible to after having switched, start the measurement to target CSI-RS.Or can also cut Change and order specifies whether UE measures CSI-RS to be measured after receiving HO order immediately. Or can also be specifically designated in HO order time that CSI-RS to be measured performs to measure by UE or Person's step.

Alternatively, this switching command message also carries to be measured in this at least one target CSI-RS The instruction information that one or more targets CSI-RS measure.Alternatively, this switching command message is also Carry the 4th instruction information or the 5th instruction information.Whether the 4th instruction information indicates this terminal unit to exist After receiving this switching command message, to be measured in immediately this second target CSI-RS being gathered one Or multiple target CSI-RS measures, it is alternatively possible to immediately this second target CSI-RS is gathered In remaining target CSI-RS in addition to the most measured main CSI-RS of target measure.These the five fingers Show that information instruction terminal unit is to one or more targets to be measured in the set of this second target CSI-RS Time that CSI-RS measures or order, it is alternatively possible to indicate this terminal unit to this second mesh In mark CSI-RS set, remaining target CSI-RS in addition to the most measured main CSI-RS of target is carried out The time measured or order.

In S470, terminal unit according to HO command messages, perform uplink synchronous process with obtain with The TA value that target CSI-RS is corresponding.

In S480, UE sends HO completion message, and this HO completion message carried terminal equipment is treated The measurement result that target CSI-RS surveyed measures.

In S490, target BS based on the measurement result that terminal unit reports be terminal equipment configuration or Activate new CSI-RS.

Alternatively, target BS determines in this target CSI-RS to be measured can be swashed based on this measurement result Target CSI-RS lived;Target BS sends CSI-RS activate message, this CSI-RS to this terminal unit Activate message carries the identification information of this CSI-RS that can be activated.

In embodiments of the present invention, target BS can also be during terminal unit performs Stochastic accessing The information of target CSI-RS to be measured is specified for terminal unit.Specifically, target BS can be at random Access the information specifying target CSI-RS to be measured in response message for terminal unit.Terminal unit is connecing After receiving accidental access response message, target CSI-RS to be measured of configuration is measured.

In embodiments of the present invention, in order to support that target BS is that terminal unit determines first object further Appropriate number of CSI-RS in CSI-RS set, source base station can carry end in handover request message The data pack buffer status information of end equipment and/or Internet protocol (IP) throughput information, so that mesh Mark base station is according to the data pack buffer status information of terminal unit and/or IP throughput information, for this terminal Equipment determines appropriate number of target CSI-RS.Specifically, the packet of terminal unit referred herein Buffer status information can be the upstream data bag buffer status information of terminal unit and downlink data packet is delayed Deposit at least one in status information.This Internet protocol (IP) throughput information can be up IP At least one in throughput information and downstream IP throughput information.

The embodiment of the present invention for community switching method, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.And the embodiment of the present invention first determines target CSI-RS by target BS, and terminal sets For again target CSI-RS being measured, it is possible to increase the specific aim that reference signal is measured, it is to avoid terminal Substantial amounts of CSI-RS is measured and causes overload by equipment such that it is able to reduce terminal unit Load.

Below by angle based on target BS, to the side for community switching according to embodiments of the present invention Method is described.

Fig. 6 shows the schematic of the method 500 for community switching according to yet another embodiment of the invention Flow chart.As shown in Figure 6, the method 500 includes:

S510, target BS receives the handover request message that source base station sends;

S520, target BS sends switching request acknowledgement message to this source base station, and this Handover Request Acknowledge disappears Breath carry this target BS determine can this target BS be configured or be activated at least one The configuration information of target CSI-RS, or the energy that this source base station carried in this handover request message is recommended The configuration information reaching at least one CSI-RS that is that be configured or that be activated at this target BS confirms Confirmation instruction.

This switching request acknowledgement message carries first object CSI-RS set and/or the second target CSI-RS The configuration information of each target CSI-RS in set, each target CSI-RS in this first object CSI-RS set Come from least in a CSI-RS set, the 2nd CSI-RS set, the 3rd CSI-RS set Kind, in the set of this second target CSI-RS, each target CSI-RS comes from the 4th CSI-RS set.

Oneth CSI-RS set refers in the CSI-RS measured by terminal unit, and source base station is according to this survey Amount result be this terminal unit select this target BS may be configured or be activated one or Multiple CSI-RS;2nd CSI-RS set refer in this most measured CSI-RS, except this first One or more CSI-RS outside each CSI-RS in CSI-RS set;3rd CSI-RS set refers to In the CSI-RS of each website that neighbor base stations controls, one or more CSI-RS to be measured;4th CSI-RS set refers to the one or more CSI-RS in the CSI-RS of each website that neighbor base stations controls.

In embodiments of the present invention, the configuration information of this at least one target CSI-RS include this at least one The identification information of individual target CSI-RS, the port numbers of this at least one target CSI-RS, send this at least The time-frequency location of one target CSI-RS, send this at least one target CSI-RS cycle, this at least The position of the transmitting station that the configuration identifier of one target CSI-RS, this at least one target CSI-RS are corresponding At least one in confidence breath.

The embodiment of the present invention for community switching method, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

In embodiments of the present invention, target BS receive source base station send handover request message after, At least one CSI-RS that source base station recommends in this handover request message can be accepted completely as target CSI-RS, or, target BS can also be recommended in this handover request message referring only to source base station At least one CSI-RS, determines at least one target CSI-RS voluntarily, this at least one target CSI-RS The CSI-RS that source base station is recommended can be selected, it is also possible to select source base station recommend CSI-RS outside its He is CSI-RS, as target CSI-RS for terminal equipment configuration.

In embodiments of the present invention, in HO request, target BS can confirm that in message, main carrying is to be measured Target CSI-RS, now, as it is shown in fig. 7, according to embodiments of the present invention for community switching Method 600 includes:

S620, target BS sends switching request acknowledgement message to this source base station, and this Handover Request Acknowledge disappears The configuration information of each target CSI-RS, this second target in breath carrying the second target CSI-RS set In CSI-RS set, each target CSI-RS comes from the 4th CSI-RS set, the 4th CSI-RS collection Close the one or more CSI-RS in the CSI-RS of each website referring to that neighbor base stations controls;

S630, target BS receives the handoff completion message that this terminal unit sends, this handoff completion message Carry the CSI-RS measurement result that target CSI-RS to be measured is measured by this terminal unit;

S640, target BS determines based on this CSI-RS measurement result can in this target CSI-RS to be measured CSI-RS that is that be configured or that be activated;

S650, target BS sends CSI-RS activate message to this terminal unit, and this CSI-RS activates and disappears Breath carries the identification information of CSI-RS that is that this can be configured or that be activated.

Alternatively, at target BS before this source base station sends switching request acknowledgement message, target BS Can receive the handover request message that source base station sends, this handover request message can carry from the 4th The configuration information of one or more CSI-RS of CSI-RS set, and/or terminal unit joined at source base station The quantity information of CSI-RS that is that put or that be activated, as shown in the S610 in Fig. 7.

Should be understood that for convenience of description and succinctly, above-mentioned from the angle of target BS to according to the present invention The description that the method for embodiment is carried out, be referred to above from the angle of source base station to real according to the present invention Execute the description that the method for example is carried out, do not repeat them here.

The embodiment of the present invention for community switching method, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

Device for community switching according to embodiments of the present invention is described more fully below.

Fig. 8 shows the schematic frame of the device 700 for community switching according to embodiments of the present invention Figure.As shown in Figure 8, this device 700 can be a base station, including the first acquisition module 710, first Determine module the 720, first sending module 730 and receiver module 740, wherein this first acquisition module 710, For obtaining the measurement result that reference signal is measured by terminal unit;This first determines module 720, For according to this measurement result, determining the target BS that community switches, this module can be a processor; This first sending module 730, for sending handover request message to this target BS;This receiver module 740, For receiving the switching request acknowledgement message that this target BS sends, the carrying of this switching request acknowledgement message should Target BS determine can this target BS be configured or at least one target of being activated The configuration information of CSI-RS, or this device of carrying in this handover request message is recommended can be at this The configuration information of at least one CSI-RS that is that target BS is configured or that be activated carries out the confirmation confirmed Instruction.Module 710,730 and 740 can be different interfaces respectively.

In embodiments of the present invention, this reference signal includes one or more communities of neighbor base stations At least one in CSI-RS and CRS, this measurement result includes the reference of one or more reference signal Signal receives power or Reference Signal Received Quality.In embodiments of the present invention, this target CSI-RS refers to The CSI-RS that the terminal unit that target BS determines can be configured at Target Station or be activated.Alternatively, This configuration information includes: the identification information of this reference signal, the port numbers of this reference signal, send this ginseng The time-frequency location examining signal, the cycle sending this reference signal, send the position of the website of this reference signal Information, this reference signal configuration identifier at least one.

The embodiment of the present invention for community switching device, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

Alternatively, as it is shown in figure 9, device 700 according to embodiments of the present invention can also include:

Second acquisition module 750, can be interface, for obtaining the configuration of the reference signal of neighbor base stations Information;

Second sending module 760, can be another interface, for setting to this terminal according to this configuration information Preparation send measurement configuration,

This first acquisition module 710 is additionally operable to receive and obtain the measurement result that this terminal unit sends, should This reference signal is measured according to this measurement configuration by this terminal unit and obtains by measurement result.

Alternatively, this measurement configuration includes the cell identity information of one or more communities of neighbor base stations, And the configuration information of one or more reference signals of each community.

Alternatively, this device 700 can also include:

Second determines module 770, can be processor, and being used in this measurement result is that CSI-RS measures During result, according to this CSI-RS measurement result, determine a CSI-RS set, a CSI-RS Set refer to this device according to this CSI-RS measurement result, in the most measured CSI-RS, for this terminal Equipment determine can this device be configured or one or more CSI-RS of being activated,

This first sending module 730 is additionally operable to send handover request message to this target BS, and this switching please Ask the configuration information of each CSI-RS in message bearing the oneth CSI-RS set, and/or this terminal unit This device be configured or the quantity information of CSI-RS that is activated.

Alternatively, this handover request message also carries the support of cooperative multipoint transmission ability of this terminal unit In information, a CSI-RS set, the measurement result of each CSI-RS, the packet of this terminal unit delay Deposit status information, IP throughput information, the 2nd CSI-RS set in each CSI-RS configuration information, At least one in the configuration information of each CSI-RS in 3rd CSI-RS set.

Wherein, a CSI-RS set refers in the most measured CSI-RS, and source base station is according to this measurement As a result, for this terminal unit select this target BS can be configured or be activated one or many Individual CSI-RS;2nd CSI-RS set refers in this most measured CSI-RS, except a CSI-RS One or more CSI-RS outside each CSI-RS in set;3rd CSI-RS set refers to neighbours' base Stand in the CSI-RS of each website controlled, the most measured one or more CSI-RS.

Alternatively, this device 700 can also include:

3rd sending module 780, can be interface, for sending switching command message to this terminal unit, This switching command message carries in the first object CSI-RS set carried in this switching request acknowledgement message The configuration information of each target CSI-RS, this first object CSI-RS set in each target CSI-RS from At least one in a CSI-RS set, the 2nd CSI-RS set, the 3rd CSI-RS set, 2nd CSI-RS set refers in this most measured CSI-RS, except each in a CSI-RS set One or more CSI-RS outside CSI-RS, the 3rd CSI-RS set refers to what neighbor base stations controlled In the CSI-RS of each website, one or more CSI-RS to be measured.

Alternatively, this switching command message also carries this terminal unit of instruction the need of obtaining and target First instruction information of TA value corresponding for CSI-RS or indicate this terminal unit to obtain and target CSI-RS The second of the order of corresponding TA value indicates information or target CSI-RS group information or target master The configuration information of CSI-RS or calculate the ginseng of TA value corresponding to target CSI-RS for this terminal unit Examine CSI-RS set.Alternatively, this switching command message also carry instruction this terminal unit to this first Target CSI-RS set in from the 3rd CSI-RS set target CSI-RS measure the 3rd Instruction information.

Alternatively, this device 700 can also include:

4th sending module 790, can be interface, for sending switching command message to this terminal unit, This switching command message carries in the second target CSI-RS set carried in this switching request acknowledgement message The configuration information of each target CSI-RS, this second target CSI-RS set in each target CSI-RS from Gather in the 4th CSI-RS.4th CSI-RS set refers to the CSI-RS of each website that neighbor base stations controls In one or more CSI-RS.

Alternatively, the set of this second target CSI-RS includes the main CSI-RS of target of this target BS.Can Selection of land, this switching command message also carries the 4th instruction information or the 5th instruction information, the 4th instruction letter Whether breath this terminal unit of instruction is after receiving this switching command message, immediately to this second target In CSI-RS set, remaining target CSI-RS in addition to the most measured main CSI-RS of target is surveyed Amount, it is the most tested that the 5th instruction information indicates this terminal unit to remove in gathering this second target CSI-RS Time of measuring of remaining target CSI-RS outside the main CSI-RS of target of amount or step.

Alternatively, this first sending module 730 is additionally operable in this reference signal is cell reference signals CRS And/or during the main CSI-RS of base station, sending handover request message to this target BS, this handover request disappears Breath carries the configuration information of one or more CSI-RS from the 4th CSI-RS set, this terminal unit This device be configured or be activated the quantity information of CSI-RS, this terminal unit packet delay Deposit at least one in status information and IP throughput information.

Alternatively, this device 700 can also include:

5th sending module 795, can be interface, for indicating according to this confirmation, to this terminal unit Send switching command message, this switching command message carry this handover request message is carried this at least one The configuration information of individual CSI-RS.

Should be understood that device 700 according to embodiments of the present invention can correspond to according to embodiments of the present invention Source base station in method, and above and other operation of the modules of device 700 and/or function are respectively In order to realize the corresponding flow process in each method 100,200,300 and 400 in Fig. 2 to Fig. 5, for Succinct, do not repeat them here.

Figure 10 shows the signal of the device 800 for community switching according to yet another embodiment of the invention Property block diagram.As shown in Figure 10, this device 800 can be base station, including:

First receiver module 810, can be interface, for receiving the handover request message that source base station sends;

First sending module 820, can be another interface, true for sending handover request to this source base station Recognize message, this switching request acknowledgement message carry that this device determines can this device be configured or quilt The configuration information of at least one target CSI-RS activated, or should to what this handover request message was carried Source base station recommend can this device be configured or the configuration letter of at least one CSI-RS of being activated Breath carries out the confirmation instruction confirmed.

Alternatively, this switching request acknowledgement message carries first object CSI-RS set and/or the second target The configuration information of each target CSI-RS in CSI-RS set, each mesh in this first object CSI-RS set Mark CSI-RS comes from a CSI-RS set, the 2nd CSI-RS set, the 3rd CSI-RS set In at least one, this second target CSI-RS set in each target CSI-RS come from the 4th CSI-RS Set.

Alternatively, this sending module 820 be additionally operable to according in this handover request message carrying this first In CSI-RS set, the configuration information of each target CSI-RS, sends this Handover Request Acknowledge to this source base station Message, this switching request acknowledgement message carries the configuration of each target CSI-RS in a CSI-RS set Information.

Alternatively, as shown in figure 11, this device 800 according to embodiments of the present invention can also include:

Second receiver module 830, can be interface, for be measured in the carrying of this switching request acknowledgement message During the configuration information of target CSI-RS, receive the handoff completion message that this terminal unit sends, this switching Completion message carries the CSI-RS measurement knot that this target CSI-RS to be measured is measured by this terminal unit Really.

Alternatively, this device 800 also includes:

Determine module 840, can be processor, for based on this CSI-RS measurement result, determine this CSI-RS that is that can be configured in target CSI-RS to be measured or that be activated;

Second sending module 850, can be interface, activates for sending CSI-RS to this terminal unit Message, this CSI-RS activate message carries the mark letter of CSI-RS that is that this can be configured or that be activated Breath.

Should be understood that device 800 according to embodiments of the present invention can correspond to according to embodiments of the present invention Target BS in method, and above and other operation of the modules of device 800 and/or function divide Not in order to realize the corresponding flow process in each method 300,400,500 and 600 in Fig. 4 to Fig. 7, For sake of simplicity, do not repeat them here.

The embodiment of the present invention for community switching device, by target BS be terminal equipment configuration extremely Few one can target BS be configured or the CSI-RS that is activated so that before and after the switching of community eventually End equipment can use multiple website simultaneously, so that terminal unit can keep industry in handoff procedure The seriality of business.

Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description The unit of example and algorithm steps, it is possible to come real with electronic hardware, computer software or the combination of the two Existing, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function one As property describe composition and the step of each example.These functions are held with hardware or software mode actually OK, application-specific and the design constraint of technical scheme are depended on.Professional and technical personnel can be to each Specifically should be used for using different methods to realize described function, but this realization is it is not considered that surpass Go out the scope of the present invention.

Those skilled in the art is it can be understood that arrive, for convenience of description and succinctly, above-mentioned The specific works process of the system, device and the unit that describe, be referred in preceding method embodiment is right Answer process, do not repeat them here.

In several embodiments provided herein, it should be understood that disclosed system, device and Method, can realize by another way.Such as, device embodiment described above is only shown Meaning property, such as, the division of described unit, be only a kind of logic function and divide, actual can when realizing There to be other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another System, or some features can ignore, or do not perform.It addition, shown or discussed each other Coupling or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or Communication connection, it is also possible to be electric, machinery or other form connect.

The described unit illustrated as separating component can be or may not be physically separate, makees The parts shown for unit can be or may not be physical location, i.e. may be located at a place, Or can also be distributed on multiple NE.Can select according to the actual needs part therein or The whole unit of person realizes the purpose of embodiment of the present invention scheme.

It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit In, it is also possible to it is that unit is individually physically present, it is also possible to be that two or more unit are integrated in In one unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ software The form of functional unit realizes.

If described integrated unit realizes and as independent product pin using the form of SFU software functional unit When selling or use, can be stored in a computer read/write memory medium.Based on such understanding, The part that prior art is contributed by technical scheme the most in other words, or this technical side Completely or partially can embodying with the form of software product of case, this computer software product is stored in In one storage medium, including some instructions with so that a computer equipment (can be individual calculus Machine, server, or the network equipment etc.) perform the whole or portion of method described in each embodiment of the present invention Step by step.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), The various medium that can store program code such as magnetic disc or CD.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to In this, any those familiar with the art, can be easily in the technical scope that the invention discloses Expecting amendment or the replacement of various equivalence, these amendments or replacement all should be contained in protection scope of the present invention Within.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.

Claims (30)

1. the method for community switching, it is characterised in that including:
Obtain the measurement result that reference signal is measured by terminal unit;
According to described measurement result, determine the target BS that community switches;
Handover request message is sent to described target BS;
Receiving the switching request acknowledgement message that described target BS sends, described switching request acknowledgement message is held Carry that described target BS determines can described target BS be configured or be activated at least one The configuration information of destination channel state information reference signals CSI-RS, or in described handover request message The source base station that carries recommend can described target BS be configured or be activated at least one The configuration information of CSI-RS carries out the confirmation instruction confirmed;
Described method also includes:
When described measurement result is CSI-RS measurement result, according to described CSI-RS measurement result, really A fixed CSI-RS set, a described CSI-RS set refers to that described source base station is according to described CSI-RS Measurement result, in the most measured CSI-RS, for described terminal unit determine can be at described mesh One or more CSI-RS that are that mark base station is configured or that be activated;
Wherein, the configuration of each CSI-RS in a CSI-RS set described in described handover request message bearing Information, and/or described terminal unit source base station be configured or the quantity information of CSI-RS that is activated.
Method the most according to claim 1, it is characterised in that described method also includes:
Obtain the configuration information of the reference signal of neighbor base stations;
Measurement configuration is sent to described terminal unit according to described configuration information,
The measurement result that reference signal is measured by described acquisition terminal unit, including:
Receiving and obtain the measurement result that described terminal unit sends, described measurement result is set by described terminal Described reference signal is measured and obtains by standby configuration according to described measurement.
Method the most according to claim 1, it is characterised in that described reference signal includes neighbours At least one in the CSI-RS and cell reference signals CRS of one or more communities of base station.
Method the most according to claim 2, it is characterised in that the configuration letter of described reference signal Breath includes: the identification information of described reference signal, the port numbers of described reference signal, send described reference The time-frequency location of signal, send the cycle of described reference signal, send the position of the website of described reference signal Confidence breath, described reference signal configuration identifier at least one.
Method the most according to claim 2, it is characterised in that described measurement configuration includes neighbours The cell identity information of one or more communities of base station, and one or more CSI-RS of each community Configuration information;
Described measurement result includes Reference Signal Received Power or the reference of the one or more CSI-RS Signal receiving quality.
Method the most according to any one of claim 1 to 5, it is characterised in that described switching Request message also carries the measurement result of each CSI-RS, described terminal in a described CSI-RS set and sets The support information of standby cooperative multipoint transmission ability, the data pack buffer status information of described terminal unit, The configuration information of each CSI-RS, the 3rd CSI-RS collection in IP throughput information, the 2nd CSI-RS set At least one in the configuration information of each CSI-RS in conjunction, wherein said 2nd CSI-RS set refers to described In the most measured CSI-RS, in a described CSI-RS set in addition to each CSI-RS one or Multiple CSI-RS, described 3rd CSI-RS set refers in the CSI-RS of each website that neighbor base stations controls, One or more CSI-RS to be measured.
Method the most according to claim 6, it is characterised in that described method also includes:
Sending switching command message to described terminal unit, described switching command message carries described switching please Seek the configuration information of at least one target CSI-RS described confirming to carry in message, described at least one Target CSI-RS come from a described CSI-RS set, described 2nd CSI-RS set, described the At least one in three CSI-RS set.
Method the most according to claim 7, it is characterised in that described switching command message is also held Carry and indicate described terminal unit the need of obtaining the Timing Advance TA value corresponding with target CSI-RS The first instruction information or indicate described terminal unit to obtain the TA value corresponding with target CSI-RS Second instruction information of order or the configuration letter of target CSI-RS group information or the main CSI-RS of target Cease or calculate for described terminal unit the reference CSI-RS set of TA value corresponding to target CSI-RS, The main CSI-RS of wherein said target refers to that the website that in each website that neighbor base stations controls, coverage is maximum passes Defeated target CSI-RS, or target CSI-RS that signal quality is best.
Method the most according to claim 7, it is characterised in that described switching command message is also held Carry indicate described terminal unit at least one target CSI-RS described from described 3rd CSI-RS The 3rd instruction information that target CSI-RS of set measures.
Method the most according to any one of claim 1 to 4, it is characterised in that described method Also include:
Sending switching command message to described terminal unit, described switching command message carries described switching please Seek the configuration information of at least one target CSI-RS described confirming to carry in message, described at least one Target CSI-RS comes from the 4th CSI-RS set, and described 4th CSI-RS set refers to neighbor base stations control One or more CSI-RS in the CSI-RS of each website of system.
11. methods according to claim 10, it is characterised in that be CRS in described reference signal And/or during the main CSI-RS of base station, described handover request message bearing is from described 4th CSI-RS collection Close the configuration information of one or more CSI-RS, described terminal unit source base station be configured or quilt The quantity information of CSI-RS of activation, the data pack buffer status information of described terminal unit, IP handle up At least one in amount information.
12. methods according to claim 11, it is characterised in that described main CSI-RS includes neighbour Occupy the CSI-RS of the station transmission that coverage is maximum in each website that base station controls, and/or signal quality Best CSI-RS.
13. methods according to claim 12, it is characterised in that at least one target described CSI-RS includes described main CSI-RS.
14. methods according to claim 10, it is characterised in that described switching command message is also One or more targets CSI-RS to be measured at least one target CSI-RS described are surveyed by carrying The instruction information of amount.
15. methods according to claim 14, it is characterised in that described switching command message is also Carrying the 4th instruction information or the 5th instruction information, the described 4th instruction information described terminal unit of instruction is No after receiving described switching command message, immediately to described one or more targets to be measured CSI-RS measures, and described 5th instruction information indicates described terminal unit to described to be measured one Time that individual or multiple targets CSI-RS measure or order.
16. methods according to any one of claim 1 to 4, it is characterised in that described method Also include:
Confirm instruction according to described, send switching command message, described switching command to described terminal unit The configuration information of at least one CSI-RS described carried in handover request message described in message bearing.
17. 1 kinds of methods for community switching, it is characterised in that including:
Receive the handover request message that source base station sends, described handover request message bearing the oneth CSI-RS The configuration information of each CSI-RS in set, described oneth CSI-RS set refer to described source base station according to CSI-RS measurement result, in the most measured CSI-RS, for terminal unit determine can be in target One or more CSI-RS that are that base station is configured or that be activated;
Switching request acknowledgement message, described switching request acknowledgement message carrying target is sent to described source base station Base station determine can described target BS be configured or at least one destination channel shape of being activated The configuration information of state information reference signal CSI-RS, or to described in described handover request message is carried Source base station recommend can described target BS be configured or at least one CSI-RS of being activated Configuration information carries out the confirmation instruction confirmed.
18. methods according to claim 17, it is characterised in that at least one target described CSI-RS come from a CSI-RS set, the 2nd CSI-RS set, the 3rd CSI-RS set, the Four CSI-RS set at least one, wherein said oneth CSI-RS set refer to described source base station according to CSI-RS measurement result, in the most measured CSI-RS, for terminal unit determine can be described One or more CSI-RS that are that target BS is configured or that be activated;Described 2nd CSI-RS set refers to In the most measured described CSI-RS, in addition to each CSI-RS in a described CSI-RS set Individual or multiple CSI-RS;Described 3rd CSI-RS set refers to the CSI-RS of each website that neighbor base stations controls In, one or more CSI-RS to be measured;Described 4th CSI-RS set refers to what neighbor base stations controlled One or more CSI-RS in the CSI-RS of each website.
19. methods according to claim 18, it is characterised in that described send out to described source base station Send switching request acknowledgement message, including:
According to each target CSI-RS in a described CSI-RS set of carrying in described handover request message Configuration information, to described source base station send described switching request acknowledgement message, described Handover Request Acknowledge The configuration information of each target CSI-RS in a CSI-RS set described in message bearing.
20. methods according to claim 17, it is characterised in that described method also includes:
When described switching request acknowledgement message carries the configuration information of target CSI-RS to be measured, receive eventually The handoff completion message that end equipment sends, described handoff completion message carries described terminal unit and treats described Survey the CSI-RS measurement result that target CSI-RS measures.
21. methods according to claim 20, it is characterised in that described method also includes:
Based on described CSI-RS measurement result determine that described target CSI-RS to be measured can be configured or The CSI-RS being activated;
Sending CSI-RS activate message to described terminal unit, the carrying of described CSI-RS activate message is described The identification information of CSI-RS that is that can be configured or that be activated.
22. 1 kinds of devices for community switching, it is characterised in that including:
First acquisition module, for obtaining the measurement result that reference signal is measured by terminal unit;
First determines module, for according to described measurement result, determines the target BS that community switches;
First sending module, for sending handover request message to described target BS;
Receiver module, for receiving the switching request acknowledgement message that described target BS sends, described switching Request confirm that target BS described in message bearing determines can described target BS be configured or quilt The configuration information of at least one destination channel state information reference signals CSI-RS activated, or to described The described device that carries in handover request message recommend can described target BS be configured or quilt The configuration information of at least one CSI-RS activated carries out the confirmation instruction confirmed;
Second determines module, for when described measurement result is CSI-RS measurement result, according to described CSI-RS measurement result, determines that a CSI-RS set, a described CSI-RS set refer to described dress Put according to described CSI-RS measurement result, in the most measured CSI-RS, true for described terminal unit Fixed can described device be configured or one or more CSI-RS of being activated,
Described first sending module is additionally operable to send handover request message, described switching to described target BS The configuration information of each CSI-RS in a CSI-RS set described in request message bearing, and/or described end End equipment described device be configured or the quantity information of CSI-RS that is activated.
23. devices according to claim 22, it is characterised in that described device also includes:
Second acquisition module, for obtaining the configuration information of the reference signal of neighbor base stations;
Second sending module, for sending measurement configuration according to described configuration information to described terminal unit,
Described first acquisition module is additionally operable to receive and obtain the measurement result that described terminal unit sends, institute State measurement result by described terminal unit according to described measure configuration described reference signal measured and Obtain.
24. according to the device described in claim 22 or 23, it is characterised in that described device also includes:
3rd sending module, for sending switching command message, described switching command to described terminal unit The configuration of at least one target CSI-RS described carried in switching request acknowledgement message described in message bearing Information, at least one target CSI-RS described comes from a described CSI-RS set, the 2nd CSI-RS Set, the 3rd CSI-RS set at least one, described 2nd CSI-RS set refer to described in the most tested In the CSI-RS of amount, one or more in addition to each CSI-RS in a described CSI-RS set CSI-RS, described 3rd CSI-RS set refers to, in the CSI-RS of each website that neighbor base stations controls, treat The one or more CSI-RS measured.
25. devices according to claim 22, it is characterised in that described device also includes:
4th sending module, for sending switching command message, described switching command to described terminal unit The configuration of at least one target CSI-RS described carried in switching request acknowledgement message described in message bearing Information, at least one target CSI-RS described comes from the 4th CSI-RS set, described 4th CSI-RS Set refers to the one or more CSI-RS in the CSI-RS of each website that neighbor base stations controls.
26. devices according to claim 25, it is characterised in that described first sending module is also For when the main CSI-RS that described reference signal is cell reference signals CRS and/or base station, to described Target BS sends handover request message, and described handover request message bearing is from described 4th CSI-RS The configuration information of one or more CSI-RS of set, described terminal unit are configured at described device Or the quantity information of the CSI-RS being activated, the data pack buffer status information of described terminal unit, IP At least one in throughput information.
27. devices according to claim 22, it is characterised in that described device also includes:
5th sending module, for confirming instruction according to described, sends switching command to described terminal unit Message, described switching command message carry in described handover request message carry described at least one The configuration information of CSI-RS.
28. 1 kinds of devices for community switching, it is characterised in that including:
First receiver module, for receiving the handover request message that source base station sends, described handover request disappears The configuration information of each CSI-RS in breath carrying the oneth CSI-RS set, a described CSI-RS set refers to Described source base station is according to CSI-RS measurement result, in the most measured CSI-RS, true for terminal unit Fixed can target BS be configured or one or more CSI-RS of being activated;
First sending module, for sending switching request acknowledgement message to described source base station, described switching please Ask confirm that device described in message bearing determines can described device be configured or be activated at least The configuration information of one destination channel state information reference signals CSI-RS, or described handover request is disappeared The described source base station that carries in breath recommend can described device be configured or be activated at least one The configuration information of individual CSI-RS carries out the confirmation instruction confirmed.
29. devices according to claim 28, it is characterised in that described device also includes:
Second receiver module, for carrying target CSI-RS to be measured in described switching request acknowledgement message During configuration information, the handoff completion message that receiving terminal apparatus sends, described handoff completion message carries institute State the CSI-RS measurement result that described target CSI-RS to be measured is measured by terminal unit.
30. devices according to claim 29, it is characterised in that described device also includes:
Determine module, for based on described CSI-RS measurement result, determine described target CSI-RS to be measured In can be configured or the CSI-RS that is activated;
Second sending module, for sending CSI-RS activate message, described CSI-RS to described terminal unit The identification information of CSI-RS that is that can be configured described in activate message carrying or that be activated.
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