CN106714205A - Communication methods and devices used for heterogeneous network - Google Patents

Communication methods and devices used for heterogeneous network Download PDF

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Publication number
CN106714205A
CN106714205A CN201510797305.4A CN201510797305A CN106714205A CN 106714205 A CN106714205 A CN 106714205A CN 201510797305 A CN201510797305 A CN 201510797305A CN 106714205 A CN106714205 A CN 106714205A
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equipment
virtual subdistrict
transfer point
node
transmission
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CN201510797305.4A
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CN106714205B (en
Inventor
佘锋
郭海友
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides communication methods and devices used for a heterogeneous network. The heterogeneous network comprises a first node, transmission points in the coverage range of the first node and devices in the first node; and each transmission point includes a unique physical identifier. The method in the first node comprises that a first group of transmission points is selected from the transmission points for the first device of the multiple devices to form a first virtual cell, and the first virtual cell serves the first device; a common identifier of the first virtual cell is assigned to the group of transmission points; and a main transmission point of the first virtual cell is selected from the group of transmission points, and used to schedule transmission of the first device in the first virtual cell. The identifier of the first virtual cell is associated with the first device, and is especially used for transmission of the first device. The invention also provides methods in the transmission point and the first device as well as corresponding devices.

Description

Method and apparatus for being communicated in heterogeneous network
Technical field
Embodiment of the disclosure is related to GSM, and relates more specifically to intensive portion The heterogeneous network of administration.
Background technology
The business demand of mobile network is anticipated in coming years and can increase substantially, whether total The bit-rate requirements aspect of traffic needs or unique user.In order to meet the demand, Yi Zhongke The solution of energy is to dispose extremely intensive network, and the network is properly termed as super-intensive network (UDN)。
However, in dense network, there is a problem of two it is serious.One problem is terminal (example Such as user equipment) may have to the adjacent more serious interference in face, another problem be cell it Between frequent switching may occur.
Therefore, scene for super-intensive network design, it is necessary to design suitable communication mechanism, with Reduce interference and/or solve switching problem.
The content of the invention
The brief overview to each embodiment is shown below is, to provide some sides to various embodiments The basic comprehension in face.The general introduction is not intended to identify the main points of key element or describes various embodiments Scope.Its sole purpose is that some concepts are presented in simplified form, is more specifically retouched as to aftermentioned The preamble stated.
The first aspect of the disclosure provides a kind of method at first node in a communications system. The communication system be additionally included in the multiple transmission point of deployment in the coverage of the first node, And the multiple equipment in the coverage of the first node, wherein the multiple transfer point Each there is unique physical identifier.Methods described includes：In for the multiple equipment One equipment, from the multiple transfer point select one group of transmission point group into the first virtual subdistrict, be used to Service first equipment；The first public virtual subdistrict identifier is assigned to one group of transfer point； And the main transfer point of first virtual subdistrict is selected from one group of transfer point, for dispatching For the transmission of first equipment in first virtual subdistrict；Wherein, described public first Virtual subdistrict identifier is associated with first equipment, and is exclusively used in for first equipment Transmission.
In one embodiment, the method can further include：To in one group of transfer point First transmission point assign the second virtual subdistrict identifier, second virtual subdistrict identifier association The second equipment in the multiple equipment, and it is exclusively used in the transmission for second equipment.
In another embodiment, the method may further include：Sent to first equipment and surveyed Amount configuration；Measurement report is received from first equipment, the measurement report indicates described first to set The result of the standby measurement carried out according to the measurement configuration；Updated according to the measurement report for receiving First virtual subdistrict, the renewal keeps first virtual subdistrict identifier constant；And Sent more to the transfer point influenceed by the renewal in first virtual subdistrict and first equipment New information.
In another embodiment, first virtual subdistrict is updated according to the measurement report for receiving At least one in the following can be included：Select the new main transmission for first virtual subdistrict Point；Transfer point is deleted from first virtual subdistrict；And increase in first virtual subdistrict Plus transfer point.
In one embodiment, new information can include at least one in the following：Be increased or The physical identifier of the transfer point that person is deleted；The reference signal configuration of the transfer point being increased；Newly Main transfer point physical identifier；And virtual subdistrict identifier.
In another embodiment, first virtual subdistrict is updated according to the measurement report for receiving It is used for the new main transfer point of first virtual subdistrict including selection, and methods described can be entered One step includes：It is determined that determining to the up-link the new main transfer point from first equipment First equipment described in Shi Yucong is to the difference between the uplink timing between former main transfer point；With And when the difference is higher than predetermined threshold, it is determined that needing in first equipment and the new master Uplink synchronisation is carried out between transfer point, and is set to the new main transfer point and described first At least one of standby transmission needs to carry out the instruction of the uplink synchronisation.
The second aspect of the disclosure provides the side at a kind of first transmission point in a communications system Method, the communication system includes first node, the deployment in the coverage of the first node The first transmission point and second transmission point and in the coverage of the first node Multiple equipment, wherein the first transmission point and the second transmission point each have unique physics Identifier.The method includes：The first void for the first virtual subdistrict is received from the first node Intend cell identifier, wherein first virtual subdistrict sets specific to first in the multiple equipment For and including the first transmission point and the second transmission point, the first virtual subdistrict mark Symbol is exclusively used in the transmission for first equipment；Received as described first from the first node The instruction of the main transfer point of virtual subdistrict；The thing of the second transmission point is received from the first node Reason identifier and reference signal configuration；From the first equipment receiving channel state information feedback；With And scheduling is from the second transmission point to the transmission of first equipment.
In one embodiment, the method may further include：The is received from the first node Two virtual subdistrict identifiers, second virtual subdistrict identifier is associated with the multiple equipment Second equipment, and it is exclusively used in the transmission for second equipment.
In another embodiment, the method may further include：Institute is received from the first node State the new information of the first virtual subdistrict.
In another embodiment, the new information can include at least one in the following：It is increased Or the physical identifier of deleted transfer point；The reference signal configuration of the transfer point being increased； Physical label list and its corresponding reference signal configuration after renewal；And new main transfer point Physical identifier.
In one embodiment, new information includes the physical identifier of new main transfer point, and Methods described may further include：First equipment is directed to the new main transfer point forwarding Data.
The third aspect of the disclosure provides the side at a kind of second transmission point in a communications system Method, the communication system includes first node, the deployment in the coverage of the first node First transmission point and the second transmission point and in the coverage of the first node Multiple equipment, wherein the first transmission point and the second transmission point each have unique physics Identifier.Methods described includes：First for the first virtual subdistrict is received from the first node Virtual subdistrict identifier, wherein first virtual subdistrict is specific to first in the multiple equipment Equipment and including the first transmission point and the second transmission point, the first virtual subdistrict mark Know the transmission that symbol is exclusively used in being directed to first equipment；Received as described the from the first node The physical identifier of the first transmission point of the main transfer point of one virtual subdistrict；Passed from described first Defeated point is received and is used for from the second transmission point to the scheduling message of the transmission of first equipment；With And according to the scheduling message to first equipment transmission data.
In one embodiment, the method may further include：The is received from the first node Two virtual subdistrict identifiers, second virtual subdistrict identifier is associated with the multiple equipment Second equipment, and it is exclusively used in the transmission for second equipment.
In another embodiment, the method may further include：Received from the first node The new information of first virtual subdistrict.
In another embodiment, new information can include at least one in the following：Deleted The physical identifier of transfer point；Physical Cell Identifier list after renewal；And new main transfer point Physical identifier.
In one embodiment, methods described also includes：Received as new from the first node The thing of other transfer points in first virtual subdistrict after the instruction and renewal of main transfer point Reason identifier and reference signal configuration, from the first equipment receiving channel state information feedback；With And dispatch from the transfer point in first virtual subdistrict after renewal to the biography of first equipment It is defeated.In another embodiment, the method can also include：From the first node receive need with First equipment carries out the instruction of the uplink synchronisation, and promotes first equipment to send out Play Stochastic accessing.In another embodiment, the method can also include：Received from former main transfer point The data for first equipment of forwarding.
The fourth aspect of the disclosure provides a kind of method at the first equipment in a communications system, The communication system includes first node, the multiple disposed in the coverage of the first node Transfer point and first equipment in the coverage of the first node, wherein institute Stating multiple transmission point each has unique physical identifier.Methods described includes：From described first Node receives the first virtual subdistrict identifier for the first virtual subdistrict；First virtual subdistrict It is associated with including one group of transfer point in the multiple transfer point, and the first virtual subdistrict identifier First equipment, and it is exclusively used in the transmission for first equipment；From the first node The configuration message of first virtual subdistrict is received, the configuration message includes that described first is virtual small The physical identifier of the one group of transfer point in area, reference symbol are configured and main transfer point；From The main transfer point receives schedule information；And received from the transfer point in first virtual subdistrict According to the data that the scheduling message is transmitted.
In one embodiment, the method may further include：Sent out to first virtual subdistrict Channels status information feedback.
In another embodiment, the method is still further comprised：Received from the first node and measured Configuration；Measurement report is sent to the first node, the measurement report indicates first equipment The result of the measurement carried out according to the measurement configuration；And receive described the from the first node The new information of one virtual subdistrict.
In another embodiment, the method may further include：Being received from the first node needs The instruction of uplink synchronisation is carried out with the main transfer point, and indicates to initiate in response to described With the process of uplink synchronization of the main transfer point.
5th aspect of the disclosure provides the device at a kind of first node in a communications system, The communication system be additionally included in the multiple transmission point of deployment in the coverage of the first node, And the multiple equipment in the coverage of the first node, wherein the multiple transfer point Each there is unique physical identifier, described device includes：Unit is set up in virtual subdistrict, is matched somebody with somebody It is set to for the first equipment in the multiple equipment, one group of biography is selected from the multiple transfer point Defeated the first virtual subdistrict of point composition, for servicing first equipment；Virtual subdistrict identifier assignment Unit, is configured as assigning the first public virtual subdistrict identifier to one group of transfer point；With And main transfer point select unit, it is configured as being selected from one group of transfer point described first virtual The main transfer point of cell, for dispatching the biography in first virtual subdistrict for first equipment It is defeated；Wherein, the first public virtual subdistrict identifier is associated with first equipment, and It is exclusively used in the transmission for first equipment.
6th aspect of the disclosure provides the dress at a kind of first transmission point in a communications system Put, the communication system includes first node, the deployment in the coverage of the first node The first transmission point and second transmission point and in the coverage of the first node Multiple equipment, wherein the first transmission point and the second transmission point each have unique physics Identifier, described device includes：First receiving unit, is configured as being received from the first node For the first virtual subdistrict identifier of the first virtual subdistrict, wherein first virtual subdistrict is specific The first equipment in the multiple equipment and including the first transmission point and second transmission Point, first virtual subdistrict identifier is exclusively used in the transmission for first equipment；Second connects Unit is received, is configured as being received as the main transmission of first virtual subdistrict from the first node The instruction of point；3rd receiving unit, is configured as receiving second transmission from the first node The physical identifier and reference signal configuration of point；4th receiving unit, is configured as from described first Equipment receiving channel state information feeds back；And scheduling unit, it is configured as scheduling from described second Transmission of the transfer point to first equipment.
7th aspect of the disclosure provides the dress at a kind of second transmission point in a communications system Put, the communication system includes first node, the deployment in the coverage of the first node First transmission point and the second transmission point and in the coverage of the first node Multiple equipment, wherein the first transmission point and the second transmission point each have unique physics Identifier, described device includes：First receiving unit, is configured as being received from the first node For the first virtual subdistrict identifier of the first virtual subdistrict, wherein first virtual subdistrict is specific The first equipment in the multiple equipment and including the first transmission point and second transmission Point, first virtual subdistrict identifier is exclusively used in the transmission for first equipment；Second connects Unit is received, is configured as being received as the main transmission of first virtual subdistrict from the first node The physical identifier of the first transmission point of point；3rd receiving unit, is configured as from described One transfer point is received and disappeared for the scheduling from the second transmission point to the transmission of first equipment Breath；And transmission unit, it is configured as transmitting number to first equipment according to the scheduling message According to.
The eighth aspect of the disclosure provides the device at a kind of the first equipment in a communications system, The communication system includes first node, the multiple disposed in the coverage of the first node Transfer point and first equipment in the coverage of the first node, wherein institute Stating multiple transmission point each has unique physical identifier, and described device includes：First receives single Unit, is configured as receiving the first virtual subdistrict mark for the first virtual subdistrict from the first node Know symbol；First virtual subdistrict includes one group of transfer point in the multiple transfer point, and the One virtual subdistrict identifier is associated with first equipment, and is exclusively used in for first equipment Transmission；Second receiving unit, is configured as virtual small from first node reception described first The configuration message in area, the configuration message includes the one group of transmission in first virtual subdistrict The physical identifier of point, reference symbol are configured and main transfer point；3rd receiving unit, is configured It is to receive schedule information from the main transfer point；And the 4th receiving unit, it is configured as from described Transfer point in first virtual subdistrict receives the data transmitted according to the scheduling message.
9th aspect of the disclosure is supplied to a kind of device, and the device includes at least one processor； And at least one include computer program code memory, wherein at least one memory It is configured as with the computer program code：Together with least one processor, promote institute State the side that device performs first aspect, second aspect, the third aspect or the fourth aspect of the disclosure Method.
Method or apparatus in accordance with an embodiment of the present disclosure, can build virtual subdistrict for service network Equipment in network, there is provided simple and effective signaling process is used for the identification and management of virtual subdistrict, makes Obtaining can reduce interference, and/or improve handover mechanism.
Although specific embodiment has been illustrated by way of example in the accompanying drawings, however, should manage Solution, description herein of specific embodiments is not intended to for embodiment to be limited to disclosed concrete form.
Brief description of the drawings
From disclosure below and claim, the purpose of the disclosure, advantage and other features Will be apparent.Here merely for the purpose of example, refer to the attached drawing provides preferred embodiment Non restrictive description, in the accompanying drawings：
Fig. 1 shows the schematic diagram of example heterogeneous network；
Fig. 2 a-2b are shown at first node in a communications system in accordance with an embodiment of the present disclosure Method flow chart；
Fig. 3 show according to the disclosure it is one embodiment, for virtual subdistrict identify and manage Signaling diagram；
Fig. 4 shows signaling one embodiment, being managed for virtual subdistrict according to the disclosure Figure；
Fig. 5 show in accordance with an embodiment of the present disclosure, side at transfer point in a communications system The flow chart of method；
Fig. 6 a-6b are shown at the transfer point in virtual subdistrict in accordance with an embodiment of the present disclosure The flow chart of other method；
Fig. 7 a-7b show in accordance with an embodiment of the present disclosure, implement at equipment in communication system Method flow chart；
Fig. 8 shows the example of the device at the node of communication network in accordance with an embodiment of the present disclosure Property structure chart；
Fig. 9 shows showing for the device at the transfer point of communication network in accordance with an embodiment of the present disclosure Example property structure chart；
Figure 10 shows the dress at another transfer point of communication network in accordance with an embodiment of the present disclosure The exemplary block diagram put；And
Figure 11 show in accordance with an embodiment of the present disclosure, the knot of device at the equipment of communication network Composition.
Specific embodiment
In the following description, many details are illustrated for purposes of illustration.However, this area is general Logical technical staff to will appreciate that and realize the disclosure in the case where these details are not used Embodiment.Therefore, the disclosure is not intended to be limited to illustrated embodiment but will be endowed and this The literary principle for the describing most wide scope consistent with feature.
It should be appreciated that term " first ", " second " etc. be used only for by an element and another Element makes a distinction.And actually the first element can also be referred to as second element, vice versa. In addition it should also be understood that " including ", "comprising" be used only for the stated feature of explanation, element, The presence of function or part, but it is not precluded from the presence of one or more other features, unit Element, function or part.
For the ease of explain, herein by with the heterogeneous network with honeycomb be background introduction sheet Disclosed embodiment, the wherein heterogeneous network include macro base station and under macro base station covering Small-cell base station, however, as will be understood by the skilled person in the art, embodiment of the disclosure is exhausted The communication network of honeycomb is not limited to, and can be to be applied to that any to there are Similar Problems (close Collection deployment caused by interference and switching problem) communication system in.
Figure 1 illustrates the schematic diagram of heterogeneous network 100, can implement in the heterogeneous network Method and apparatus in accordance with an embodiment of the present disclosure.But embodiment of the disclosure is not necessarily shown at this Implement in example network.As shown in figure 1, the heterogeneous network 100 can include the net of such as macro base station Network node 101, the macro base station can be, for example, meeting third generation partner program (3GPP) The node B (eNB) of the evolution of Long Term Evolution (LTE) standard of formulation, is properly termed as MeNB. But as skilled in the art will understand, the network node can also be miscellaneous equipment, example Such as node B (NodeB, NB), base transceiver station etc..In macro base station (such as MeNB) 101 Coverage in, multiple cells or WAP (110-119) can be disposed, each Cell is by a small-cell base station (for example, cell eNB, or be SeNB) covering. There can be multiple terminal devices (such as 120-122) in the coverage of MeNB.Each is slight Area base station is properly termed as a transfer point (TP).Can be for example, by between MeNB and each TP The interface connection of X2, but embodiment of the disclosure is not limited to this.Similarly, between TP Can be connected by specific interface (such as X2 interface).In example network deployment, MeNB With TP it is also possible that for example by S1-C interfaces, being connected to mobility management entity (MME), And/or, such as, by S1-U interface, it is connected to gateway (S-GW).But such as this Art personnel it will be appreciated that, embodiment of the disclosure is not limited to the specific net shown in Fig. 1 Network structure.
As described above, when intensive cell is deployed with the coverage of MeNB, terminal Serious interference may be faced, while may need to perform frequently switching.For this super-intensive Network, can be using the concept of virtual subdistrict.Virtual subdistrict can include one group of cell or nothing Line access point, the cell or WAP are selected for interference coordination and/or joint is passed It is defeated.At present, also not used for the specific suitable mechanism of virtual subdistrict.For example, in super-intensive In network, how mobility of the management terminal device in virtual subdistrict is still open problem. If the problem can not be solved well, super-intensive network cannot play its potentiality. In multiple-input and multiple-output (MIMO) systematic research, on coordinate multipoint (CoMP), propose Such as measuring assembly and the concept of cooperation set, but these concepts not yet solve super-intensive cell In problem, such as mobility problem, cell identification problem, cell management problem.Therefore, have Necessity is for the specific suitable virtual subdistrict mechanism of super-intensive Quarter Design.
For at least a portion problem in problem above, embodiment of the disclosure proposes improved Method and apparatus, move for providing virtual subdistrict identifier mechanism and equipment (such as user equipment (UE)) Virtual subdistrict administrative mechanism during dynamic.
First segment in a communications system in accordance with an embodiment of the present disclosure is shown in Fig. 2 a-2b The flow chart of the method 200 at point.The communication system for example can be system 100 described in Fig. 1. The first node can be the MeNB 101 in such as Fig. 1.The communication system includes the first segment Point, multiple transmission point (such as TP in Fig. 1 disposed in the coverage of the first node Multiple equipment 110-119) and in the coverage of the first node is (such as in Fig. 1 120-122).Wherein, multiple transmission point each has unique physical identifier, such as physics Cell identifier or cell ID.
As shown in Figure 2 a, the method includes：In block S201, for multiple equipment in first set Standby (such as the UE 120 in Fig. 1), one group of transfer point (such as TP is selected from multiple transmission point The first virtual subdistrict 110-116) is constituted, for servicing first equipment；In block S202, to this One group of transfer point assigns the first public virtual subdistrict identifier, and the first virtual subdistrict identifier is closed First equipment is coupled to, and is exclusively used in the transmission for first equipment；And block S203, The main transfer point (MTP) for the first virtual subdistrict is selected from this group of transfer point, for dispatching For the transmission of first equipment in first virtual subdistrict.
In accordance with an embodiment of the present disclosure, virtual subdistrict can be easily recognized, is efficiently performed from void Intend cell to the dedicated transmissions of equipment, and be easy to the management and running of virtual subdistrict.
In one embodiment, in block S201, substantial amounts of TP can be grouped into one it is virtual small Qu Zhong.In another embodiment, a small amount of TP can be only included in virtual subdistrict.This can depend on Channel matter between the position of equipment, the deployment density of cell or equipment and each cell Amount etc..
In another embodiment, the MTP for being selected in block S203, as the head of virtual subdistrict, Its function can include, for example, dispatch and transmission control channel.In one embodiment, MTP can With the multiple TP in schedule virtual cell jointly to first equipment transmission data.
In another embodiment, the MTP can be from scheduled the first equipment (such as UE 120) Receiving channel state information (CSI) feeds back, and based on the CSI feedback, carries out adaptive scheduling. In another embodiment, the non-MTP transfer points in the virtual subdistrict can also connect from first equipment Receive CSI feedback.
In accordance with an embodiment of the present disclosure, the TP in virtual subdistrict can have two identifiers (ID). One ID is physical district ID (small cell ID), and the ID is different to each cell；And another ID is virtual subdistrict ID, is that the TP in virtual subdistrict is public, in other words, belongs to same void The TP for intending cell can have identical virtual subdistrict ID.In one embodiment, virtual subdistrict ID can be used for the transmission specifically designed for first equipment, for example, being used for demodulated reference signal (DMRS) in transmission and virtual subdistrict for first equipment data transfer scrambling.And Physical district ID can be used for the common transmission in cell, such as the public affairs in each cell Common reference signal (such as channel state information reference signals (CSI-RS), public reference signal (CRS) transmission).
Additionally, in one embodiment, a TP in communication system may belong to multiple differences Virtual subdistrict, and therefore can have multiple virtual subdistrict ID.Therefore, in one embodiment In, method 200 can also include, in block S204, in one group of transfer point in virtual subdistrict First transmission point assigns the second virtual subdistrict identifier, and the second virtual subdistrict identifier is associated with institute The second equipment (such as UE 121) in multiple equipment is stated, and is exclusively used in for second equipment Transmission.That is, the TP that the first virtual subdistrict includes is while could also belong to clothes Another virtual subdistrict of the second equipment of being engaged in.Using assigned different virtual subdistrict ID, the TP The transmission for distinct device can easily be distinguished.
In one embodiment, with the mobility of UE, virtual subdistrict can be changed, and MTP can also be changed.For example, as shown in Figure 2 b, method 200 may further include, In block S205, MeNB sends measurement configuration to the first equipment；Measurement configuration includes, for example, uses In measurement and/or the parameter of report, cell list, the condition of triggering measurement report such as to be measured Deng.In block S206, measurement report is received from the first equipment, the measurement report indicates the first equipment root The result of the measurement carried out according to the measurement configuration；In block S207, the measurement report according to reception is more New first virtual subdistrict, the renewal can keep the first virtual subdistrict identifier constant；And in block S208, sends renewal and disappears to the transfer point influenceed by renewal in the first virtual subdistrict and the first equipment Breath.
The embodiment makes it possible to the mobile change virtual subdistrict of UE, so as to ensure to UE The quality of the service of offer.It should be noted that virtual subdistrict is specific for UE's.Therefore, although Virtual subdistrict changes, but virtual subdistrict ID can be with constant.
In another example, it is also possible to perform renewal based on the other factorses outside measurement report. Estimation or the base of distances of the MeNB to the first equipment relative to each TP can also be for example based on NACK/ACK statistics in mixed automatic retransfer etc. estimates the quality of each link, so as to enter Row updates.
In one embodiment, updated in block S207 the first virtual subdistrict can include it is following in At least one：Select new main transfer point for the first virtual subdistrict, virtual from described first Transfer point is deleted in cell and to increasing transfer point in first virtual subdistrict.
In order to realize/notifying cell renewal, some configuration signals can be exchanged.In one embodiment In, new information can include at least one in the following：Physical label after renewal is arranged and its right The reference signal configuration answered, the physical identifier of the transfer point for being increased or being deleted, it is increased The reference signal configuration of transfer point, the physical identifier of new main transfer point and virtual subdistrict Identifier.But as skilled in the art will understand, message above is only as example Present, actually in other embodiments, the new information can include other or another Outer message, and embodiment of the disclosure is not limited to the new information of any concrete form and content. For example, new information can directly broadcast the thing of all transfer points in the first virtual subdistrict after updating Reason identity column and its corresponding reference signal configuration；Virtual subdistrict can also be only indicated to occur in configuring The part of change, for example, physical identifier and its reference signal configuration of the transfer point being increased etc..
In another embodiment, for different TP, different new informations can respectively be sent. For example, for the TP deleted from virtual subdistrict, MeNB can only notify that it is deleted；For The TP for newly increasing, MeNB can notify the physics ID of MTP in new information to the TP, The virtual subdistrict ID of the virtual subdistrict；For MTP, MeNB can be to the void after its notice renewal New configuration (such as reference signal configuration) of TP etc. in plan cell.
In another embodiment, the new information for the first equipment can be differently configured from for TP's New information.New virtual subdistrict is determined based on measurement result in MeNB and new MTP is selected Afterwards, MeNB can be by the reference signal of the TP in new virtual subdistrict (for example, channel status is believed Breath reference signal (CSI-RS)) configuration be sent to the first equipment.Additionally, in new virtual subdistrict The physical cell identifier of TP can also be sent to UE.MeNB can also send signaling to UE is the new MTP in virtual subdistrict to inform which TP.
In another embodiment, for different renewal results, the content of new information can not also Together.
In one embodiment, method 200 can be provided for controlling the machine of uplink synchronisation System.For example, in one embodiment, in virtual subdistrict updates, MTP may change. In this case, the first equipment will be communicated in uplink direction with new MTP, for example, use In feedback CSI.Because UE may be different from the distance of the new MTP and old MTP, so that Uplink timing may be different.Therefore, in one embodiment, criterion can be introduced to judge Whether old uplink time synchronization can be reused.In view of Stochastic accessing (RACH) mistake Journey can be used acquisition uplink synchronisation, if old synchronization can be reused, virtual During cell change, it is not necessary to go to go to perform random access procedure for the purpose of uplink synchronous, So as to time-consuming and resource.Therefore, in one embodiment, as shown in Figure 2 b, method 200 may further include, in block S209, it is determined that from the first equipment to new main transfer point Uplink timing and from the first equipment between the uplink timing former main transfer point Difference；And in block S210, when the difference is higher than predetermined threshold, it is determined that needing described the Carry out uplink synchronisation between one equipment and new main transfer point, and to new main transfer point and At least one of first equipment sends to be needed to carry out the instruction of the uplink synchronisation.
In one embodiment, in block S209, by the first equipment between new main transfer point Distance and the first equipment determine from the first equipment to new to the difference of the distance between former main transfer point Main transfer point between uplink timing and from the first equipment to up former main transfer point Difference between link timing.
In another embodiment, the finger of uplink synchronisation is carried out the need for being sent at block S210 Show special RACH (RACH) lead code that can include for the uplink synchronisation. In another embodiment, it is also possible to not specify special RACH lead codes, but allow the first equipment from Randomly choosed in available lead code set.
The embodiment can avoid unnecessary synchronous mistake when original uplink synchronisation can be reused Journey, saves system resource, reduces interference.For example, in current LTE system, for up The timing advance (TA) of link transmission has the granularity of minimum 0.52us, i.e. less than 0.52us's Difference will be unable to be distinguished.The difference above corresponds approximately to 78 meters in distance.So as to ultra dense In collection network, if the distance and UE of UE and new MTP are poor with the distance between original MTP than being somebody's turn to do Apart from short, then uplink synchronisation is likely to be reused.In one embodiment, this In the case of, process of uplink synchronization can not be carried out between the first equipment and new MTP.
Figure 3 illustrates according to the disclosure it is one embodiment, for virtual subdistrict identify and manage The signaling diagram of reason.In FIG. 3, it is assumed that UE has access to MeNB, and establish and MeNB Radio resource control (RRC) connection.As shown in figure 3, the identification procedure of virtual subdistrict can To comprise the following steps：
Step 1：MeNB sends measurement configuration to UE.Measurement configuration for example can be by RRC Signaling sends.In the RRC signaling, measurement list can be included, wherein can include substantial amounts of Cell.
Step 2：According to the report triggering conditions configured in the measurement configuration for receiving, UE will be to MeNB The multiple measurement results of report.Each measurement result will include the physical district ID of measured cell (for example Reference Signal Received Power (RSRP), reference signal connect for instruction with received signal strength Receive quality (RSRQ) etc.).Then, based on the measurement result reported, MeNB can be known, For example, the apparent position of UE, and/or UE and the large scale of each TP link-quality.
Step 3：After the report for receiving UE, MeNB can determine virtual subdistrict and MTP. Embodiment of the disclosure is not limited to carry out virtual subdistrict with any specific algorithm and MTP is selected. In practice, can be selected according to specific rule as needed.
Step 4：MeNB distributes and sends (notice) virtual subdistrict ID to the TP in virtual subdistrict. It should be noted that a TP may belong to multiple virtual subdistricts, in this case, the TP can be by Distribute more than one virtual subdistrict ID.Virtual subdistrict ID can be used to join for the demodulation of the UE Examine the scrambling of signal (DMRS) and data.
Step 5：MeNB sends the configuration parameter of the TP in virtual subdistrict to UE.The configuration of TP Can be used for channel condition information (CSI) feedback.For example, the CSI-RS of the TP in virtual subdistrict Configuration and its physical district ID.Meanwhile, MeNB also notifies the virtual subdistrict of virtual subdistrict to UE ID。
Step 6：UE feeds back CSI to virtual subdistrict (such as the MTP of virtual subdistrict).
Step 7：Based on CSI feedback, MTP can perform the scheduling of self adaptation, and for example, by But it is not limited to, X2 interface sends schedule information to other TP.It is then possible to perform united number According to transmission.
It should be noted that the problem of the delay of X2 interface can not be ignored, but in fact, optical fiber, Microwave, millimeter wave (mmW) radio can be seen as the X2 interface of low latency.This public affairs The embodiment opened is not limited to the specific low delay technology listed here.
Figure 4 illustrates letter one embodiment, being managed for virtual subdistrict according to the disclosure Order figure.As shown in figure 4, the mobility with UE in super-intensive network, management process can be with It is implemented as follows：
Step 1：With the movement of UE, MeNB will be adaptively modified measurement configuration, and MeNB will send amended measurement and be configured to UE.Accordingly, the report triggering bar based on configuration Part, the measurement result that UE can update to MeNB reports, for example, report RSRP.
Step 2：Based on measurement result, MeNB may determine whether the new virtual subdistrict of selection or New MTP.New MeNB or virtual subdistrict is selected if desired, then proceed to step 3.
Step 3：MeNB sends to MTP current in virtual subdistrict for example, by X2 interface and cuts Order is changed, notice will be switched to new MTP.
Step 4：MeNB sends out for example, by the new MTP (target TP) of X2 interface virtual subdistrict Send switching command and receive from it feedback.Order to MTP can include virtual subdistrict ID and more The CSI-RS configurations of other TP in virtual subdistrict after new, and other TP physical area ID。
Step 5：After MeNB selects MTP and new virtual subdistrict, MeNB can be to UE Signaling is sent, the information on new virtual subdistrict is notified, such as on the information of new MTP. In the signaling can also include new virtual subdistrict in each TP physical district ID and and it is right The CSI-RS for answering is configured.MeNB can also tell UE which TP is MTP in the signaling. Additionally, optional, the special RACH for performing Stochastic accessing with new MTP (RACH) it is leading to may also be included in that the signaling.
Step 6：Old MTP can forward data by X2 interface to new MTP.
Step 7：In super-intensive network, due to the space between new MTP and old MTP In small distance, uplink synchronisation is possible to be reused.For example, in LTE, it is minimum TA granularities are 0.52us, and this is approximately corresponding to 78 meters of distance.Therefore, in super-intensive network, If the distance between UE and two MTP differences are less than 78 meters, uplink synchronisation is likely to can To be reused.By this way, handoff procedure can be simplified.On the other hand, if up Link synchronization can not be reused, and UE needs leading for up to new MTP transmissions RACH Link synchronization.
Step 8：The RACH sent for UE is leading, and new MTP can be with ascending resource point With and/or timing advance (TA) message as response.
Step 9：Data are transmitted between new virtual subdistrict and UE.
The method at MeNB in a communications system is described above in association with Fig. 2 a, 2b, 3 and 4 And system signaling flow.Below in conjunction with Fig. 5 introductions communicating in accordance with an embodiment of the present disclosure Method 500 at TP in system.Fig. 5 shows the flow chart of method 500.The method 500 Can be performed as first transmission point (such as the TP 110 shown in Fig. 1) in the communication system 100. As shown in figure 1, the communication system 100 is including first node (such as MeNB), described first First transmission point (such as TP 110) and second transmission point (example of deployment in the coverage of node Such as, TP 111) and multiple equipment in the coverage of first node (for example, UE 120-122), wherein the first transmission point and the second transmission point each have unique physics Identifier (for example, physical district ID).As shown in figure 5, the method includes：In block S501, The TP 110 receives the first virtual subdistrict identifier for the first virtual subdistrict from first node, its In the first virtual subdistrict specific to the first equipment (such as UE 120) in multiple equipment and including First transmission point and second transmission point, the first virtual subdistrict identifier are exclusively used in for first equipment Transmission；In block S502, received as the main transfer point of the first virtual subdistrict from first node (MTP) instruction；In block S503, second transmission point (for example, TP 111) is received from first node Physical identifier and reference signal configuration；In block S504, channel status letter is received from the first equipment Breath feedback；And in block S505, dispatch from second transmission point to the transmission of the first equipment.
According to above-described embodiment, the TP 110 in communication system can be appointed as virtual small by MeNB MTP in area, it can know other TP (such as second biographies in the virtual subdistrict from MeNB Defeated, TP 111) information, and according to the information from equipment, dispatch from virtual subdistrict Other TP to the equipment transmission.It should be noted that Application way 500, enables to MTP The joint transmission of the equipment of multiple TP to first in combined dispatching virtual subdistrict.
In one embodiment, the TP 110 for being chosen as the MTP of virtual subdistrict can also be simultaneously In multiple virtual subdistricts.In this case, the method 500 can also include, in block S506, The TP 110 receives the second virtual subdistrict identifier, second virtual subdistrict from the first node Identifier is associated with the second equipment (such as UE 121) in the multiple equipment, and is exclusively used in For the transmission of second equipment.
Above in conjunction with described in Fig. 2 and Fig. 4, when equipment is moved, MeNB can update virtual small Area.Therefore, in one embodiment, the TP 110 can be in block S507 from first node (example Such as MeNB) receive the new information of the first virtual subdistrict.It is different according to the result for updating, update Message can include different contents.In one embodiment, new information can include it is following in At least one：The physical label row and its correspondence of each transfer point in the first virtual subdistrict after renewal Reference signal configuration, the physical identifier of transfer point that is increased or is deleted；It is increased The reference signal configuration of transfer point；And the physical identifier of new main transfer point.
If TP 110 is kept as MTP in the updating, it can be according in virtual subdistrict The TP lists and its corresponding configuration of renewal updates scheduling.If the TP 110 is in the updated not It is again MTP, its Physical Cell Identifier that can be informed that new MTP, and when needed, Block S508 is by for the data forwarding of the first equipment to the new MTP.Have been illustrated with fig. 4 The example of such case.
Fig. 6 a-6b show another at the TP in virtual subdistrict in accordance with an embodiment of the present disclosure The flow chart of method 600.The method 600 equally can be in the communication system 100 for example shown in Fig. 1 Middle implementation.The method 600 can be performed by second transmission point (for example, the TP 111 in Fig. 1). As shown in Figure 6 a, the method includes：In block S601, from first node (such as the MeNB in Fig. 1) The first virtual subdistrict identifier for the first virtual subdistrict is received, wherein as it was previously stated, first is empty Intend cell to be transmitted specific to the first equipment in multiple equipment and including first transmission point and second Point, first virtual subdistrict identifier is exclusively used in the transmission for first equipment；In block S602, the thing of the first transmission point as the main transfer point of the first virtual subdistrict is received from first node Reason identifier；In block S603, received for from second transmission point to the first equipment from first transmission point Transmission scheduling message；And in block S604, passed to first equipment according to the scheduling message Transmission of data.
The method 600 enables that the TP in communication system is included in virtual subdistrict, and Worked as non-MTP.The TP can receive the schedule information from MTP such that it is able to according to This goes to the data transfer of the first equipment.As skilled in the art will understand, virtual In cell, multiple TP can perform the method 600, so that the plurality of TP can set for first It is standby to perform joint transmission.
As it was previously stated, in one embodiment, the TP in communication system can be included in multiple In virtual subdistrict.Therefore, method 600 may further include, in block S605, from first node The second virtual subdistrict identifier is received, the second virtual subdistrict identifier is associated with multiple equipment Second equipment, and it is exclusively used in the transmission for the second equipment.
In addition, as described in preceding combination Fig. 2 a, 2b, 4,5, with the movement of equipment, MeNB can To update virtual subdistrict, and new information is sent to the TP of correlation.Therefore, in one embodiment In, method 600 can further include, and in block S606, receive first from first node virtual The new information of cell, as shown in Figure 6 b.Different according to result is updated, the content of new information can To change.In one embodiment, new information can include at least one in the following：Deleted The physical identifier of the transfer point removed；And the physical identifier of new main transfer point.
In one embodiment, the TP 111 can be elected as newly in virtual subdistrict updates by MeNB MTP.In this case, as shown in Figure 6 b, method 600 may further include, Block S607, after the instruction and renewal that receive as new main transfer point from first node first The physical identifier and reference signal configuration of other transfer points in virtual subdistrict；In block S608, from One equipment receiving channel state information feeds back；And in block S609, first void of the scheduling from after renewal Intend the transfer point in cell to the transmission of the first equipment.
As it was previously stated, in some cases, equipment to the up-link between new MTP can be again With the Timing Synchronization of the equipment to the up-link between old MTP, such as in equipment to new Timing and equipment between MTP are to the difference between the timing between old MTP less than predetermined During threshold value, or, when the distance between equipment to new MTP with equipment between old MTP Distance difference be less than predetermined threshold value when.In other cases, equipment and new MTP Between uplink synchronisation can not reuse uplink synchronisation between equipment and old MTP. Therefore, in certain embodiments, method 600 can further include, in block S610, from One node receives the instruction for needing that uplink synchronisation is carried out with the first equipment, and in block S611, The first equipment is promoted to initiate Stochastic accessing.In one embodiment, TP 111 can be by descending letter (such as beep-page message) is made to notify that the first equipment initiates Stochastic accessing to carry out uplink synchronisation.
In another embodiment, as new MTP, the TP 111 can in block S612, from Former main transfer point receives the data for the first equipment of forwarding, as shown in Figure 4.In an implementation In example, the forwarding can be carried out by the X2 interface between new MTP and old MTP, however, As skilled in the art will understand, embodiment of the disclosure is not limited to use the interface.
Fig. 7 a-7b show the side implemented at the equipment of communication system in accordance with an embodiment of the present disclosure The flow chart of method 700.The method 700 can be real in the communication system 100 for example shown in Fig. 1 Apply.The method 700 can be performed by the first equipment (for example, the UE 120 in Fig. 1).As schemed Shown in 7a, the method includes：In block S701, being received from first node (such as MeNB) is used for First virtual subdistrict identifier of the first virtual subdistrict；First virtual subdistrict is included in multiple transmission point One group of transfer point, and the first virtual subdistrict identifier is associated with first equipment, and special In the transmission for first equipment；In block S702, the first virtual subdistrict is received from first node Configuration message, the configuration message include the first virtual subdistrict in one group of physical identifier of transfer point, Reference symbol is configured and main transfer point；In block S703, schedule information is received from main transfer point；With And in block S704, the number transmitted according to the scheduling message is received from the transfer point in the first virtual subdistrict According to.
The method 700 enables that the equipment in communication system is serviced by one group of cell, and this one Group cell has common virtual subdistrict ID, so that equipment is not required to when being moved in the virtual subdistrict Perform handover operation.In addition, by the joint transmission in virtual subdistrict, the service quality of equipment Can be improved.
In one embodiment, as shown in Figure 7b, in order that winner MTP can be efficiently performed Scheduling, equipment can send information feedback in block S705 to main transfer point.Another In embodiment, in block S705, equipment can also send channel to the transfer point of other in virtual subdistrict Status information feedback.
In another embodiment, equipment can receive measurement and match somebody with somebody in block S706 from first node Put；In block S707, measurement report is sent to first node, the measurement report indicates the first equipment root The result of the measurement carried out according to measurement configuration；And in block S708, receive first from first node empty Intend the new information of cell.This enables that MeNB is virtually small with the mobile continuous renewal of equipment The configuration in area.
Equipment can also send random access request to main transfer point as needed, same for upper walking along the street Step.In one embodiment, only carried out with main transfer point when equipment receives needs from first node Process of uplink synchronization is just initiated during the instruction of uplink synchronisation, such as by initiating to connect at random Enter.Therefore, the method 700 can also include that, in block S709, being received from the first node needs The instruction of uplink synchronisation is carried out with the main transfer point, and in block S710, in response to institute State and indicate to initiate the process of uplink synchronization with the main transfer point.In one embodiment, come From first node, need carry out uplink synchronisation with main transfer point instruction can be, for example, Special random access preamble code.In another embodiment, can not also to receive this special random for equipment Access lead code, but randomly selected from available lead code set when needing to initiate RACH The lead code to be used.In one embodiment, the up-link between equipment and new MTP When can reuse the uplink synchronisation between the equipment and old MTP, the equipment can not be performed RACH is with uplink synchronisation.This causes that signaling and Stochastic accessing can be saved in some cases Resource, reduces interference.
Below with reference to the structure of Fig. 8-11 descriptions device in accordance with an embodiment of the present disclosure.
Fig. 8 shows the exemplary block diagram of device 800 in accordance with an embodiment of the present disclosure.At one Such as in embodiment, device 800 may be implemented as the first node in communication system, in Fig. 1 MeNB 101 in shown communication system 100, or one part.The operable use of device 800 In the method 200 described by execution reference picture 2a-2b, and any other treatment and method. It should be appreciated that method 200 is not limited to be performed by device 800, method 200 it is at least some Block can also be performed by other devices or entity.
As shown in figure 8, device 200 sets up unit 801 including virtual subdistrict, it is configured as being directed to The first equipment in the multiple equipment, select from the multiple transfer point one group of transmission point group into First virtual subdistrict, for servicing first equipment；Virtual subdistrict identifier assignment unit 802, It is configured as assigning the first public virtual subdistrict identifier to one group of transfer point；And main biography Defeated point selection unit 803, is configured as being selected from one group of transfer point described first virtual small The main transfer point in area, for dispatching the transmission in first virtual subdistrict for first equipment； Wherein, the first public virtual subdistrict identifier is associated with first equipment, and special In the transmission for first equipment.
In one embodiment, unit 801, virtual subdistrict identifier assignment list are set up in virtual subdistrict Unit 802 and main transfer point select unit 803 can perform method described in conjunction with Figure 2 respectively The operation of 200 block S201-S203.Therefore, the description for being carried out with reference to Fig. 2 is equally fitted herein With, and therefore repeat no more.
In one embodiment, virtual subdistrict identifier assignment unit 802 can be additionally configured to First transmission point in one group of transfer point assigns the second virtual subdistrict identifier, and described second is empty Intend the second equipment that cell identifier is associated with the multiple equipment, and be exclusively used in for described The transmission of the second equipment.
In another embodiment, the device 800 can further include：Measurement dispensing unit 804, It is configured as sending measurement configuration to first equipment；Measurement result receiving unit 805, is matched somebody with somebody It is set to from first equipment and receives measurement report, the measurement report indicates the first equipment root The result of the measurement carried out according to the measurement configuration；Virtual subdistrict updating block 806, is configured as First virtual subdistrict is updated according to the measurement report for receiving, the renewal keeps described the One virtual subdistrict identifier is constant；And new information transmitting element 807, it is configured as to described The transfer point influenceed by the renewal in first virtual subdistrict and first equipment send renewal and disappear Breath.In one embodiment virtual subdistrict updating block 806 be configured to it is following at least One updates first virtual subdistrict：Select the new main biography for first virtual subdistrict Defeated point；Transfer point is deleted from first virtual subdistrict；And in first virtual subdistrict Increase transfer point.
In one embodiment, new information can include at least one in the following：After renewal The physical label row of each transfer point and its corresponding reference signal configuration, increased in first virtual subdistrict Plus or deleted transfer point physical identifier；The reference signal configuration of the transfer point being increased； The physical identifier of new main transfer point；And virtual subdistrict identifier.
In another embodiment, virtual subdistrict updating block 806 is configured as selection for described the The new main transfer point of one virtual subdistrict, and device 800 may further include：Up-link Timing determination unit 808, is configured to determine that from first equipment to the new main transfer point Between uplink timing and from first equipment to former main transfer point up-link determine When between difference；And uplink synchronisation control unit 809, it is configured as in the difference During higher than predetermined threshold, it is determined that needing to enter between first equipment and the new main transfer point Row uplink synchronisation, and at least in the new main transfer point and first equipment Individual transmission needs to carry out the instruction of the uplink synchronisation.In one embodiment, sending needs The instruction for carrying out the uplink synchronisation includes：Send for the special of the uplink synchronisation Random access lead code.
Fig. 9 shows the exemplary block diagram of device 900 in accordance with an embodiment of the present disclosure.At one In embodiment, device 900 may be implemented as the first transmission point in communication system, such as Fig. 1 Shown in communication system 100 in TP 110, or one part.The operable use of device 900 In the method 500 described by execution reference picture 5, and any other treatment and method.Should Understand, method 500 is not limited to be performed by device 900, at least some pieces of method 500 Can be performed by other devices or entity.
As shown in figure 9, device 900 includes stating the first receiving unit 901, it is configured as from described First node receives the first virtual subdistrict identifier for the first virtual subdistrict, wherein described first Virtual subdistrict specific to the first equipment in the multiple equipment and including the first transmission point and The second transmission point, first virtual subdistrict identifier is exclusively used in for first equipment Transmission；Second receiving unit 902, is configured as being received as described first from the first node The instruction of the main transfer point of virtual subdistrict；3rd receiving unit 903, is configured as from described first Node receives the physical identifier and reference signal configuration of the second transmission point；4th receiving unit 904, it is configured as being fed back from the first equipment receiving channel state information；And scheduling unit 905, scheduling is configured as from the second transmission point to the transmission of first equipment.
In one embodiment, unit 901-905 can be configured to perform with reference to Fig. 5 institutes The operation of the block 501-505 of the method 500 stated, therefore refers to the description that Fig. 5 carried out same herein Sample is applicable, and therefore repeats no more.
In one embodiment, device 900 can also include the 5th receiving unit 906, be configured It is to receive the second virtual subdistrict identifier, second virtual subdistrict identifier from the first node The second equipment in the multiple equipment is associated with, and is exclusively used in the biography for second equipment It is defeated.
In another embodiment, device 900 may further include the 6th receiving unit 907, quilt It is configured to be received from the first node new information of first virtual subdistrict.In an implementation In example, new information includes at least one in the following：Respectively passed in the first virtual subdistrict after renewal The physical label row of defeated point and its corresponding reference signal configuration, the transmission for being increased or being deleted The physical identifier of point；The reference signal configuration of the transfer point being increased；And new main transfer point Physical identifier.
In one embodiment, the new information that the 6th receiving unit 907 is received includes new master The physical identifier of transfer point, and described device 900 may further include：Retransmission unit 908, It is configured as being directed to the new main transfer point forwarding data of first equipment.
The structure of the device 1000 implemented at another transmission node that Figure 10 shows in a communications system Figure.In one embodiment, device 1000 may be implemented as the second transmission point in communication system, The TP 111 in communication system 100 for example shown in Fig. 1, or one part.Device 1000 Can be used to perform the method 600 described by reference picture 6a-6b, and any other treatment And method.It should be appreciated that method 600 is not limited to be performed by device 1000, method 600 At least some pieces can also be performed by other devices or entity.
As shown in Figure 10, device 1000 includes the first receiving unit 1001, is configured as from described First node receives the first virtual subdistrict identifier for the first virtual subdistrict, wherein described first Virtual subdistrict specific to the first equipment in the multiple equipment and including the first transmission point and The second transmission point, first virtual subdistrict identifier is exclusively used in for first equipment Transmission；Second receiving unit 1002, is configured as being received as described first from the first node The physical identifier of the first transmission point of the main transfer point of virtual subdistrict；3rd receiving unit 1003, it is configured as being received for from the second transmission point to described from the first transmission point The scheduling message of the transmission of one equipment；And transmission unit 1004, it is configured as according to the scheduling Message is to first equipment transmission data.
In one embodiment, unit 1001-1004 can be configured to execution and refer to Fig. 6 The operation of the block 601-604 of described method 600, therefore refers to description that Fig. 6 a are carried out herein It is equally applicable, and therefore repeat no more.
In one embodiment, device 1000 can further include：4th receiving unit 1005, It is configured as receiving the second virtual subdistrict identifier, second virtual subdistrict from the first node Identifier is associated with the second equipment in the multiple equipment, and is exclusively used in being set for described second Standby transmission.
In another embodiment, device 1000 can further include：5th receiving unit 1006, It is configured as being received from the first node new information of first virtual subdistrict.In a reality Apply in example, new information includes at least one in the following：It is each in the first virtual subdistrict after renewal The physical label row and its corresponding reference signal configuration, the physics of deleted transfer point of transfer point Identifier；And the physical identifier of new main transfer point.
In another embodiment, device 1000 can also include：6th receiving unit 1007, quilt It is configured to the institute after the instruction and renewal for receiving as new main transfer point from the first node State the physical identifier and reference signal configuration of other transfer points in the first virtual subdistrict；7th connects Unit 1008 is received, is configured as being fed back from the first equipment receiving channel state information；And adjust Degree unit 1009, be configured as scheduling from the transfer point in first virtual subdistrict after renewal to The transmission of first equipment.
In one embodiment, device can also include the 8th receiving unit 1010, be configured as from The first node receives the instruction for needing that the uplink synchronisation is carried out with first equipment, And Stochastic accessing control unit 1011, it is configured as promoting first equipment to initiate to connect at random Enter.
In another embodiment, device can also include the 9th receiving unit 1012, be configured as from Former main transfer point receives the data for first equipment of forwarding.
The structure chart of the device 1100 implemented at the equipment that Figure 11 shows in a communications system.One In individual embodiment, device 1100 may be implemented as the communication system 100 for example shown in Fig. 1 In equipment (120-122) or one part.Device 1100 can be used to perform reference picture Method 700 described by 7a-7b, and any other treatment and method.It should be appreciated that method 700 are not limited to be performed by device 1100, and at least some pieces of method 700 can also be by other Device or entity perform.
As shown in figure 11, device 1100 includes the first receiving unit 1101, is configured as from described First node receives the first virtual subdistrict identifier for the first virtual subdistrict；Described first is virtual Cell includes one group of transfer point in the multiple transfer point, and the first virtual subdistrict identifier is closed First equipment is coupled to, and is exclusively used in the transmission for first equipment；Second receives single Unit 1102, is configured as being received from the first node configuration message of first virtual subdistrict, The configuration message includes the physical label of the one group of transfer point in first virtual subdistrict Symbol, reference symbol configuration and main transfer point；3rd receiving unit 1103, is configured from the master Transfer point receives schedule information；And the 4th receiving unit 1104, it is configured as empty from described first The transfer point intended in cell receives the data transmitted according to the scheduling message.
In one embodiment, device 1100 may further include：First transmitting element 1105, It is configured as sending channel condition information to the virtual subdistrict (such as but not limited to main transfer point) Feedback.
In another embodiment, device 1100 may further include：5th receiving unit 1106, It is configured as receiving measurement configuration from the first node；Measurement report transmitting element 1107, is matched somebody with somebody It is set to and sends measurement report to the first node, the measurement report indicates the first equipment root The result of the measurement carried out according to the measurement configuration；And the 6th receiving unit 1108, it is configured as The new information of first virtual subdistrict is received from the first node.
In another embodiment, device 1100 may further include：7th receiving unit 1109, Being configured as being received from the first node needs to perform the finger with the uplink synchronisation of main transfer point Show (such as instruction can be special random access preamble code)；And Stochastic accessing unit 1110, It is configured to respond to receive the instruction, initiates the process of uplink synchronization with main transfer point high.
As skilled in the art will understand, device 800-1100 can also include figure respectively Other units not shown in 8-11, and in certain embodiments, some of Fig. 8-11 units Can be omitted.
The advantage of the method and apparatus that embodiment of the disclosure is proposed includes at least one following：
- can effectively identify and manage virtual subdistrict；
- reduce interference；
- save resources；
- improve handover mechanism.
It will be readily appreciated by those skilled in the art that block or step in various above-mentioned various methods Suddenly can be performed by the computer for programming.In the disclosure, some embodiments are also intended to cover Program storage device, for example, digital data storage medium, this be machine or it is computer-readable simultaneously And the instruction repertorie that encoding machine is executable or computer is executable, wherein, the instruction is performed State some or all of steps of method.Program storage device can be, for example, digital storage, The storage of the magnetic storage medium of such as Disk and tape, hard disk drive or optical readable numerical data is situated between Matter.The embodiment is also intended to cover the computer of the step of being programmed to carry out the above method.One A little embodiments are also intended to cover a kind of device, and the device includes at least one processor；And at least One memory for including computer program code, wherein at least one memory and the meter Calculation machine program code is configured as：Together with least one processor, described device is promoted to hold Row method 200,500,600 or 700.
The function of the various elements of the device being shown in the drawings, can be by using software, special Hardware and the hardware or firmware that are able to carry out software that are associated with appropriate software or its With reference to providing.When provided by a processor, the function can be by single application specific processor, by list Individual shared processor is provided by multiple individually processors.Additionally, term " processor " can To include but is not limited to, digital signal processor (DSP) hardware, network processing unit, special collection Into circuit (ASIC), field programmable gate array (FPGA), deposited for storing the read-only of software Reservoir (ROM), random access memory (RAM) and Nonvolatile memory devices.Can be with Hardware of conventional and/or customization including other.
It will be appreciated by those skilled in the art that specification and drawings are merely illustrative embodiment of the disclosure Principle.It will thus be appreciated that those skilled in the art is possible to design various arrangements, Although not describing clearly here or showing, the arrangement embodies the original of embodiment of the disclosure Manage and be included in the spirit and scope of embodiment of the disclosure.Additionally, the institute for illustrating here There is example to be directed primarily to clearly be only used for teaching purpose, to help reader to understand embodiment of the disclosure Principle and inventor's contribution the concept for promoting this area, and should be to be construed as being without limitation of The example and condition of these specific explainations.And, here illustrate embodiment of the disclosure principle, Aspect and embodiment be described and its specific example is also intended to comprising its equivalent.

Claims (40)

1. a kind of method at first node in a communications system, the communication system is additionally included in The multiple transmission point of deployment and positioned at the first node in the coverage of the first node Coverage in multiple equipment, wherein the multiple transfer point each have unique physics mark Know symbol, methods described includes：
For the first equipment in the multiple equipment, one group of biography is selected from the multiple transfer point Defeated the first virtual subdistrict of point composition, is used to service first equipment；
The first public virtual subdistrict identifier is assigned to one group of transfer point；And
The main transfer point of first virtual subdistrict is selected from one group of transfer point, for dispatching For the transmission of first equipment in first virtual subdistrict；
Wherein, the first public virtual subdistrict identifier is associated with first equipment, and It is exclusively used in the transmission for first equipment.
2. method according to claim 1, further includes：
The second virtual subdistrict identifier is assigned to the first transmission point in one group of transfer point, it is described Second virtual subdistrict identifier is associated with the second equipment in the multiple equipment, and is exclusively used in pin Transmission to second equipment.
3. method according to claim 1 and 2, further includes：
Measurement configuration is sent to first equipment；
Measurement report is received from first equipment, the measurement report indicates the first equipment root The result of the measurement carried out according to the measurement configuration；
First virtual subdistrict is updated according to the measurement report for receiving, the renewal keeps institute State the first virtual subdistrict identifier constant；And
To the transfer point and first equipment that are influenceed by the renewal in first virtual subdistrict Send new information.
4. method according to claim 3, wherein being updated according to the measurement report for receiving First virtual subdistrict includes at least one in the following：
Select the new main transfer point for first virtual subdistrict；
Transfer point is deleted from first virtual subdistrict；And
To increasing transfer point in first virtual subdistrict.
5. method according to claim 3, wherein the new information include it is following in extremely One item missing：
The physical identifier of the transfer point for being increased or being deleted；
The reference signal configuration of the transfer point being increased；
The physical identifier of new main transfer point；And
Virtual subdistrict identifier.
6. method according to claim 3, wherein being updated according to the measurement report for receiving First virtual subdistrict includes selection for the new main transfer point of first virtual subdistrict, and And methods described is further included：
It is determined that from first equipment to the uplink timing the new main transfer point with From first equipment to the difference between the uplink timing former main transfer point；And
When the difference is higher than predetermined threshold, it is determined that needing in first equipment and described new Uplink synchronisation is carried out between main transfer point, and to the new main transfer point and described first At least one of equipment sends to be needed to carry out the instruction of the uplink synchronisation.
7. a kind of method at first transmission point in a communications system, the communication system includes the One node, the first transmission point disposed in the coverage of the first node and second pass Defeated point and the multiple equipment in the coverage of the first node, wherein described first Transfer point and the second transmission point each have unique physical identifier, and methods described includes：
The first virtual subdistrict identifier for the first virtual subdistrict is received from the first node, its Described in the first virtual subdistrict specific to the first equipment in the multiple equipment and including described One transfer point and the second transmission point, first virtual subdistrict identifier are exclusively used in for described The transmission of the first equipment；
The instruction as the main transfer point of first virtual subdistrict is received from the first node；
The physical identifier and reference signal for receiving the second transmission point from the first node are matched somebody with somebody Put；
From the first equipment receiving channel state information feedback；And
Scheduling is from the second transmission point to the transmission of first equipment.
8. method according to claim 7, further includes：
The second virtual subdistrict identifier, the second virtual subdistrict mark are received from the first node Symbol is associated with the second equipment in the multiple equipment, and is exclusively used in for second equipment Transmission.
9. the method according to claim 7 or 8, further includes：
The new information of first virtual subdistrict is received from the first node.
10. method according to claim 9, wherein the new information include it is following in At least one：
The physical identifier of the transfer point for being increased or being deleted；
The reference signal configuration of the transfer point being increased；
Physical label list and its corresponding reference signal configuration after renewal；And
The physical identifier of new main transfer point.
Method at a kind of 11. second transmission points in a communications system, the communication system includes First node, the first transmission point and described second disposed in the coverage of the first node Transfer point and the multiple equipment in the coverage of the first node, wherein described One transfer point and the second transmission point each have unique physical identifier, and methods described includes：
The first virtual subdistrict identifier for the first virtual subdistrict is received from the first node, its Described in the first virtual subdistrict specific to the first equipment in the multiple equipment and including described One transfer point and the second transmission point, first virtual subdistrict identifier are exclusively used in for described The transmission of the first equipment；
Described the as the main transfer point of first virtual subdistrict is received from the first node The physical identifier of one transfer point；
Received for from the second transmission point to first equipment from the first transmission point The scheduling message of transmission；And
According to the scheduling message to first equipment transmission data.
12. methods according to claim 11, further include：
The second virtual subdistrict identifier, the second virtual subdistrict mark are received from the first node Symbol is associated with the second equipment in the multiple equipment, and is exclusively used in for second equipment Transmission.
13. method according to claim 11 or 12, further includes：
The new information of first virtual subdistrict is received from the first node.
14. methods according to claim 13, wherein the new information include it is following in At least one：
The physical identifier of deleted transfer point；
Physical Cell Identifier list after renewal；And
The physical identifier of new main transfer point.
15. methods according to claim 11, methods described also includes：
Described in after the instruction and renewal that are received as new main transfer point from the first node The physical identifier and reference signal configuration of other transfer points in the first virtual subdistrict, and
From the first equipment receiving channel state information feedback；And
Scheduling is from the transfer point in first virtual subdistrict after renewal to first equipment Transmission.
16. methods according to claim 15, also include：
Being received from the first node needs to carry out the uplink synchronisation with first equipment Instruction, and
First equipment is promoted to initiate Stochastic accessing.
17. methods according to claim 15, also include：
The data for first equipment of forwarding are received from former main transfer point.
Method at a kind of 18. the first equipment in a communications system, the communication system includes the One node, in the coverage of the first node dispose multiple transmission point and positioned at institute First equipment in the coverage of first node is stated, wherein the multiple transfer point each has There is unique physical identifier, methods described includes：
The first virtual subdistrict identifier for the first virtual subdistrict is received from the first node；Institute Stating the first virtual subdistrict includes one group of transfer point in the multiple transfer point, and first virtual small Area's identifier is associated with first equipment, and is exclusively used in the transmission for first equipment；
The configuration message of first virtual subdistrict, the configuration message are received from the first node The physical identifier of the one group of transfer point in including first virtual subdistrict, reference symbol are matched somebody with somebody Put and main transfer point；
Schedule information is received from the main transfer point；And
The number transmitted according to the scheduling message is received from the transfer point in first virtual subdistrict According to.
19. methods according to claim 18, further include：
Measurement configuration is received from the first node；
Measurement report is sent to the first node, the measurement report indicates the first equipment root The result of the measurement carried out according to the measurement configuration；And
The new information of first virtual subdistrict is received from the first node.
20. methods according to claim 18, further include：
The finger for needing that uplink synchronisation is carried out with the main transfer point is received from the first node Show, and
Indicate to initiate the process of uplink synchronization with the main transfer point in response to described.
Device at a kind of 21. first nodes in a communications system, the communication system also includes In the coverage of the first node dispose multiple transmission point and positioned at the first segment Multiple equipment in the coverage of point, wherein the multiple transfer point each has unique physics Identifier, described device includes：
Unit is set up in virtual subdistrict, be configured as the first equipment in the multiple equipment, from One group of transmission point group is selected in the multiple transfer point into the first virtual subdistrict, is used to service described One equipment；
Virtual subdistrict identifier assignment unit, is configured as public to one group of transfer point assignment First virtual subdistrict identifier；And
Main transfer point select unit, is configured as selecting first void from one group of transfer point Intend the main transfer point of cell, for dispatching in first virtual subdistrict for first equipment Transmission；
Wherein, the first public virtual subdistrict identifier is associated with first equipment, and It is exclusively used in the transmission for first equipment.
22. devices according to claim 21, wherein virtual subdistrict identifier assignment is single Unit is additionally configured to assign the second virtual subdistrict mark to the first transmission point in one group of transfer point Symbol, second virtual subdistrict identifier is associated with the second equipment in the multiple equipment, and It is exclusively used in the transmission for second equipment.
23. device according to claim 21 or 22, further includes：
Measurement dispensing unit, is configured as sending measurement configuration to first equipment；
Measurement result receiving unit, is configured as receiving measurement report from first equipment, described Measurement report indicates first equipment that the result of the measurement for carrying out is configured according to the measurement；
Virtual subdistrict updating block, is configured as updating described the according to the measurement report for receiving One virtual subdistrict, the renewal keeps first virtual subdistrict identifier constant；And
New information transmitting element, be configured as in first virtual subdistrict receive the renewal shadow Loud transfer point and first equipment send new information.
24. devices according to claim 23, wherein the virtual subdistrict updating block is matched somebody with somebody It is set to by least one in the following to update first virtual subdistrict：
Select the new main transfer point for first virtual subdistrict；
Transfer point is deleted from first virtual subdistrict；And
To increasing transfer point in first virtual subdistrict.
25. devices according to claim 23, wherein the new information include it is following in At least one：
The physical identifier of the transfer point for being increased or being deleted；
The reference signal configuration of the transfer point being increased；
The physical identifier of new main transfer point；And
Virtual subdistrict identifier.
26. devices according to claim 23, wherein the virtual subdistrict updating block is matched somebody with somebody Selection is set to for the new main transfer point of first virtual subdistrict, and described device is further Including：
Uplink timing determining unit, is configured to determine that from first equipment to described new Uplink timing between main transfer point and from first equipment to upper former main transfer point Difference between line link timing；And
Uplink synchronisation control unit, is configured as when the difference is higher than predetermined threshold, really It is fixed to need to carry out uplink synchronisation between first equipment and the new main transfer point, and And carried out at least one of the new main transfer point and described first equipment transmission needs described The instruction of uplink synchronisation.
Device at a kind of 27. first transmission points in a communications system, the communication system includes First node, the first transmission point and second disposed in the coverage of the first node Transfer point and the multiple equipment in the coverage of the first node, wherein described One transfer point and the second transmission point each have unique physical identifier, and described device includes：
First receiving unit, is configured as being received for the first virtual subdistrict from the first node First virtual subdistrict identifier, wherein first virtual subdistrict is specific in the multiple equipment First equipment and including the first transmission point and the second transmission point, described first is virtual small Area's identifier is exclusively used in the transmission for first equipment；
Second receiving unit, is configured as receiving virtual small as described first from the first node The instruction of the main transfer point in area；
3rd receiving unit, is configured as being received from the first node thing of the second transmission point Reason identifier and reference signal configuration；
4th receiving unit, is configured as being fed back from the first equipment receiving channel state information； And
Scheduling unit, is configured as scheduling from the second transmission point to the biography of first equipment It is defeated.
28. devices according to claim 27, further include：
5th receiving unit, is configured as receiving the second virtual subdistrict mark from the first node Symbol, second virtual subdistrict identifier is associated with the second equipment in the multiple equipment, and It is exclusively used in the transmission for second equipment.
29. device according to claim 27 or 28, further includes：
6th receiving unit, is configured as receiving first virtual subdistrict from the first node New information.
30. devices according to claim 29, wherein the new information include it is following in At least one：
The physical identifier of the transfer point for being increased or being deleted；
The reference signal configuration of the transfer point being increased；
Physical label list and its corresponding reference signal configuration after renewal；And
The physical identifier of new main transfer point.
Device at a kind of 31. second transmission points in a communications system, the communication system includes First node, the first transmission point and described second disposed in the coverage of the first node Transfer point and the multiple equipment in the coverage of the first node, wherein described One transfer point and the second transmission point each have unique physical identifier, and described device includes：
First receiving unit, is configured as being received for the first virtual subdistrict from the first node First virtual subdistrict identifier, wherein first virtual subdistrict is specific in the multiple equipment First equipment and including the first transmission point and the second transmission point, described first is virtual small Area's identifier is exclusively used in the transmission for first equipment；
Second receiving unit, is configured as receiving virtual small as described first from the first node The physical identifier of the first transmission point of the main transfer point in area；
3rd receiving unit, is configured as being received for being passed from described second from the first transmission point Scheduling message of the defeated point to the transmission of first equipment；And
Transmission unit, is configured as according to the scheduling message to first equipment transmission data.
32. devices according to claim 31, further include：
4th receiving unit, is configured as receiving the second virtual subdistrict mark from the first node Symbol, second virtual subdistrict identifier is associated with the second equipment in the multiple equipment, and It is exclusively used in the transmission for second equipment.
33. device according to claim 31 or 32, further includes：
5th receiving unit, is configured as receiving first virtual subdistrict from the first node New information.
34. devices according to claim 33, wherein the new information include it is following in At least one：
The physical identifier of deleted transfer point；
Physical Cell Identifier list after renewal；And
The physical identifier of new main transfer point.
35. devices according to claim 31, described device also includes：
6th receiving unit, is configured as being received as new main transfer point from the first node Indicate and update after first virtual subdistrict in other transfer points physical identifier and Reference signal configuration, and
7th receiving unit, is configured as being fed back from the first equipment receiving channel state information； And
Scheduling unit, is configured as scheduling from the transfer point in first virtual subdistrict after renewal To the transmission of first equipment.
36. devices according to claim 35, also include：
8th receiving unit, being configured as being received from the first node needs and first equipment The instruction of the uplink synchronisation is carried out, and
Stochastic accessing control unit, is configured as promoting first equipment to initiate Stochastic accessing.
37. devices according to claim 35, also include：
9th receiving unit, is configured as receiving being set for described first for forwarding from former main transfer point Standby data.
Device at a kind of 38. the first equipment in a communications system, the communication system includes the One node, in the coverage of the first node dispose multiple transmission point and positioned at institute First equipment in the coverage of first node is stated, wherein the multiple transfer point each has There is unique physical identifier, described device includes：
First receiving unit, is configured as being received for the first virtual subdistrict from the first node First virtual subdistrict identifier；First virtual subdistrict includes a group in the multiple transfer point Transfer point, and the first virtual subdistrict identifier is associated with first equipment, and it is exclusively used in pin Transmission to first equipment；
Second receiving unit, is configured as receiving first virtual subdistrict from the first node Configuration message, the configuration message includes the one group of transfer point in first virtual subdistrict Physical identifier, reference symbol configuration and main transfer point；
3rd receiving unit, is configured as receiving schedule information from the main transfer point；And
4th receiving unit, is configured as receiving basis from the transfer point in first virtual subdistrict The data of the scheduling message transmission.
39. device according to claim 38, further includes：
5th receiving unit, is configured as receiving measurement configuration from the first node；
Measurement report transmitting element, is configured as sending measurement report to the first node, described Measurement report indicates first equipment that the result of the measurement for carrying out is configured according to the measurement；And
6th receiving unit, is configured as receiving first virtual subdistrict from the first node New information.
40. device according to claim 38, further includes：
7th receiving unit, being configured as being received from the first node needs and the main transfer point The instruction of uplink synchronisation is carried out, and
Stochastic accessing unit, is configured to respond to the instruction and initiates upper with the main transfer point Uplink synchronization process.
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