CN104135772A - Method and device of dual-connectivity communication in mobile communication system - Google Patents
Method and device of dual-connectivity communication in mobile communication system Download PDFInfo
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Abstract
The invention provides a method of carrying out time division multiplexing dual-connectivity communication on a time division duplex (TDD) mobile communication system. In one embodiment, the method comprises a step of applying a certain offset to sub-frame indexes of two cells, which are used for carrying out dual-connectivity communication on UE (User Equipment), so as to overlap uplink sub-frames of the two cells as little as possible. Through utilizing the technical scheme provided by the invention, the problem of compatibility of dual-connectivity communication of the TDD system is solved, and independent scheduling of a macro cell and a small cell is implemented as flexible as possible.
Description
Technical field
The present invention relates to the scheme of in mobile communication technology field, subframe being dispatched, particularly relate in time division duplex Long Term Evolution (the TDD LTE-Time Division Duplex Long Term Evolusion) system that has adopted dual link (Dual-Connectivity) technology ascending-descending subframes is dispatched scheme.
Background technology
Third generation partner program (3GPP-3rd Generation Partner Project) has defined the frame structure of following TDD-LTE system, and wherein D represents descending sub frame, and U represents sub-frame of uplink, and S is special subframe:
Table 1:TDD LTE frame structure
3GPP has further defined the parameter k across subframe uplink subframe scheduling, as shown in table 2.The implication of k is: the DCI for uplink scheduling in descending sub frame n, the subframe of its scheduling is positioned at n+k subframe.It should be noted that for tdd frame structure #0, can be 4 by upper line index indication (ULI-Uplink Index) the configuration k in DCI, or 7, or be 4 and 7 simultaneously.
Uplink subframe scheduling parameter k in table 2:TDD LTE
For the ACK/NACK of the upper feedback of sub-frame of uplink n, its for PDSCH may be only the PDSCH of the DCI indication that sends of n-k subframe, wherein k belongs to subframe collection K, as table 3 definition.
Table 3: descending associated subframe collection K
3GPP has introduced the problem of Microcell enhancing (SCE-Small Cell Enhancement) in version (R-Release) 12, studies cellulor and further improve the solution of message capacity and robustness in disposing especially large scale deployment scene on the basis of R11 research.One of them challenge is: thereby the coverage of cellulor is less thereby may produce frequent switching, improve cutting off rate.
As improving a competitive scheme that connects robustness under cellulor mobile environment, dual link (Dual Connectivity) scheme becomes study hotspot, be that subscriber equipment (UE-User Equipment) keeps being connected with macrocellular and cellulor simultaneously, in the process of switching at cellulor, by macrocellular, connect and keep communication to avoid call drop.
When dual link is implemented by different carrier, be the carrier aggregation (CA-Carrier Aggregation) between a kind of eNB in essence.Compare with the CA of R11, macrocellular and the passback between cellulor of dual link communication are nonideal, i.e. time delay is not 0, and capacity is limited, thereby traditional CA solution can not be suitable for dual link communication completely.Consider the complexity of UE radio circuit, in R11 CA, UE can not send upward signal on the carrier wave on two frequency bands simultaneously, but selects to send by a carrier wave uplink information that has carried two carrier waves.For example, when on needs, feedback is for the Physical Uplink Control Channel (PUCCH-Physical UDlink Control Channel) of the Physical Downlink Shared Channel (PDSCH-Physical Downlink Shared Channel) of two carrier waves, UE sends two PUCCH main carrier (PCC-Primary Carrier Component) is upper.
R11 hypothesis composition has desirable passback condition between CALiang Ge community, and returning time delay can ignore, and passback infinite capacity is large, therefore on a carrier wave, receives that two PUCCH do not affect the scheduling on two carrier waves.And in dual link communication, consider the return link time delay of macrocellular and cellulor, and the uplink information for two honeycombs is sent to a honeycomb, cannot realize in time dynamic dispatching.
As 3GPP manuscript R1-131427, R1-131243, R1-131300 suggestion, a proper method is to adopt time-multiplexed mode, the upward signal transmitting for macrocellular at carrier wave 1 in some subframe, the upward signal transmitting for cellulor at carrier wave 2 in other subframe.
The method realizes than being easier to Frequency Division Duplexing (FDD) Long Term Evolution (FDD-LTE:Frequency Division Duplex Long Term Evolution), because the existing descending sub frame of FDD-LTE is one to one, the binding technology in similar time division duplex LTE (TDD-LTE) introduced can realize a sub-frame of uplink and feed back a plurality of descending sub frames.
For TDD-LTE, the synchronous transmission of existing ACK/NACK binding and Physical Uplink Shared Channel (PUSCH-Physical Uplink Sharing Channel) has been done special design for different frame structure types, as shown in form 2 forms 3.Time-multiplexed dual link must be considered and the compatibility of existing protocol, otherwise can cause the conflict at control and data resource with traditional UE in TDD-LTE system.
For this problem, the present invention has provided the time-multiplexed dual link scheme of TDD-LTE system, compatible existing protocol and realize as far as possible flexibly the independent scheduling of macrocellular and cellulor.
Summary of the invention
The CA of R11 supposes that the System Frame Number (SFN-System Frame Number) between each carrier wave is Complete Synchronization, and for TDD, the subframe index of each carrier wave is complete matching in time.Can bring like this problem, for those, in all frame structures, be all fixed as for example subframe 2 of up subframe, during dual link communication, the uplink scheduling of macrocellular and cellulor must conflict, therefore there is the subframe 2 of a carrier wave not to be scheduled, bring thus corresponding PDSCH not to be scheduled.For tdd frame structure #5, subframe 2 is unique sub-frame of uplink, that is to say, time-multiplexed dual link communication can cause the descending sub frame of macrocellular and cellulor also cannot be scheduled simultaneously.For other frame structure, can not the be scheduled peak rate of impact that also can be larger of subframe 2.Therefore solution of the present invention has comprised the synchronous and nonsynchronous scene of SFN between each carrier wave.
The invention discloses a kind of method of carrying out dual link communication in TDD system customer equipment (UE), wherein, comprise the steps:
-determine that sub-frame of uplink subset USF1_A that community 1 can take in the sub-frame of uplink set USF1 of carrier wave f1 and described community 1 are at up reference frame structure and the descending reference frame structure of described carrier wave f1
-on described carrier wave f1, communicate by letter with described community 1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Downlink Shared Channel (PDSCH) and up replying/non-replying (ACK/NACK) and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Uplink Shared Channel (PUSCH) and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
-determine that the sub-frame of uplink subset USF2_A that can take and described community 2 are at up reference frame structure and the descending reference frame structure of described carrier wave f2 in the sub-frame of uplink set USF2 of the carrier wave f2 of community 2, wherein,
Described USF2_A is: in described USF2, corresponding subframe is not the subframe of described USF1_A, and described community 2 is determined according to existing method at up reference frame structure and the descending reference frame structure of described carrier wave f2
-2 communications in carrier wave f2Shang He community, wherein the sequential of the descending reference frame structure of described carrier wave f2 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f2 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF2_A
As one embodiment of the present of invention, UE can not send upstream data simultaneously on carrier wave f1 and carrier wave f2, but can while downlink data receiving on carrier wave f1 and carrier wave f2.The data passback of community 1 and community 2 is nonideal, i.e. the time delay of data interaction can not be ignored, and the capacity of data interaction is limited.Community 1 is small-cell, has lower transmitting power (for example 23dBm/20MHz) and less coverage, and community 2 is macrocells, has higher transmitting power (for example 49dBm/20MHz) and larger coverage.For the less small-cell of service UE, can configure flexibly descending reference frame structure.For macrocell, need to consider and the compatibility of traditional UE, according to existing method, determine up reference frame structure and descending reference frame structure, existing method comprises:
In the interference management adaptation transmitter (eIMTA-enhanced Interference Management Traffic Adaptation) that-non-strengthens, on, descending reference frame structure is identical and for system information block (SIB-System Information Block) 1 frame structure configuring
In-eIMTA scene, upper, descending reference frame structure may frame structures different and that do not configure for SIB1.
Concrete, according to an aspect of the present invention, it is characterized in that, if the subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all descending sub frame, described USF1_A is described USF1, the descending reference frame structure of described carrier wave f1 is the descending reference frame structure of described community 1 in the single connection scene of described carrier wave f1, and the up reference frame structure of described carrier wave f1 is the up reference frame structure of described community 1 in the single connection scene of described carrier wave f1.
The special subframe of TDD system is considered to descending sub frame conventionally.The subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all that descending sub frame is that SFN skew by described community 1 and described community 2 realizes.
As one embodiment of the present of invention, the frame structure of community 1 on carrier wave f1 is #2, and the frame structure of community 2 on carrier wave f2 is #0, and the relative community 1 of subframe index of community 2 has moved to right 1 subframe:
| Community 1 | .D | S | U | D | D | D | S | U | D | D |
| Community 2 | U | D | S | U | U | U | D | S | U | U |
The special subframe of sub-frame of uplink 2/7 respective cell 2 of community 1 is descending sub frame like this.The uplink of community 1 and community 2 does not clash.Upper in the single connection scene of carrier wave f1 of community 1, descending reference frame structure is respectively upper at carrier wave f1 of dual link scene small area 1, descending reference frame structure.Same, upper in the single connection scene of carrier wave f2 of community 2, descending reference frame structure is respectively upper at carrier wave f2 of dual link scene small area 2, descending reference frame structure.It should be noted that, according to existing protocol, in single connection scene, being divided into two kinds may, in the interference management adaptation transmitter of non-enhancing (eIMTA-enhanced Interference Management Traffic Adaptation), upper, descending reference frame structure is identical and be system information block (SIB-System Information Block) 1 frame structure configuring, in eIMTA scene, upper, descending reference frame structure may frame structures different and that do not configure for SIB1.
As another embodiment of the present invention, the frame structure of community 1 on carrier wave f1 is #3, and the frame structure of community 2 on carrier wave f2 is #3, and the relative community 1 of subframe index of community 2 has moved to right 5 subframes:
| Community 1 | D | S | U | U | U | D | D | D | D | D |
| Community 2 | D | D | D | D | D | D | S | U | U | U |
The descending sub frame 7/8/9 of sub-frame of uplink 2/3/4 respective cell 2 of community 1 like this.Upper in the single connection scene of carrier wave f1 of community 1, descending reference frame structure is respectively upper at carrier wave f1 of dual link scene small area 1, descending reference frame structure.Same, upper in the single connection scene of carrier wave f2 of community 2, descending reference frame structure is respectively upper at carrier wave f2 of dual link scene small area 2, descending reference frame structure.
Concrete, according to another aspect of the present invention, it is characterized in that, if the subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all sub-frame of uplink, described USF1_A is subframe 2, the descending reference frame structure of described carrier wave f1 is #5.
As another embodiment of the present invention, the frame structure of community 1 on carrier wave f1 is #0, and the frame structure of community 2 on carrier wave f2 is #0, the relative community 1 of subframe index of community 25 subframes that moved to right, i.e. (overstriking be subframe 2):
| Community 1 | D | S | U | U | U | D | S | U | U | U |
| Community 2 | D | S | U | U | U | D | S | U | U | U |
In the present embodiment, although the subframe 2 of community 1 and community 2 is all corresponding sub-frame of uplink each other, but not conflict of the subframe of Liang Ge community 2, and descending reference frame structure is that #5 has guaranteed that all descending sub frames can obtain uplink feedback timely, do not reduce descending peak rate.
Concrete, according to another aspect of the present invention, it is characterized in that, if the subframe of described community 2 corresponding to the subset USF1_S1 in described USF1 on described carrier wave f2 is sub-frame of uplink, the subframe of described community 2 corresponding to subset USF1_S2 in described USF1 on described carrier wave f2 is descending sub frame, if the sub-frame of uplink of described USF1_S2 and frame structure #X coincide, described USF1_A is described USF1_S2, and the up reference frame structure of described carrier wave f1 and the descending reference frame structure of described carrier wave f1 are #X.
Described X is 0～6 integer.
As one embodiment of the present of invention, the frame structure of community 1 on carrier wave f1 is #1, and the frame structure of community 2 on carrier wave f2 is #2, the relative community 1 of subframe index of community 21 subframe that moved to right, that is:
| Community 1 | D | S | U | U | D | D | S | U | U | D |
| Community 2 | D | D | S | U | D | D | D | S | U | D |
For community 1, USF1 is subframe 2/3/7/8, and USF1_S1 is subframe 3/8, and USF1_S2 is subframe 2/7, and the sub-frame of uplink of USF1_S2 and frame structure #2 coincide, so upper at carrier wave 1 of community 1, descending reference frame structure is frame structure #2.
Concrete, according to another aspect of the present invention, it is characterized in that, if the sub-frame of uplink of described USF1_S2 and all frame structures is all misfitted, described USF1_A is subframe 2, the descending reference frame structure of described carrier wave f1 is #5
As one embodiment of the present of invention, the frame structure of community 1 on carrier wave f1 is #1, and the frame structure of community 2 on carrier wave f2 is #2, and the relative community of subframe index of community 2 is skew not, that is:
| Community 1 | D | S | U | U | D | D | S | U | U | D |
| Community 2 | D | S | U | D | D | D | S | U | D | D |
In the present embodiment, there is conflict in subframe 2 in community 1 and community 2, therefore can only take subframe 2 and use descending reference frame structure #5 to dispatch whole descending sub frames in You Yige community.Consider that small-cell is generally used for providing transfer of data at a high speed, a proper way is subframe #2 to be distributed to small-cell use, and macrocell is used other sub-frame of uplink.
Concrete, according to another aspect of the present invention, it is characterized in that, if described USF1_A is subframe 2:
If the subframe 8 of-described community 1 on described carrier wave f1 is fixed as descending sub frame, the up reference frame structure of described carrier wave f1 is any one in #2～5
If the subframe 8 of-described community 1 on described carrier wave f1 is sub-frame of uplink or dynamic subframe, the up reference frame structure of described carrier wave f1 is #1
If subframe 8 is fixed as descending sub frame, frame structure is a kind of in #2/3/4/5, and with regard to subframe 2, the HARQ sequential that up reference frame structure is #2～5 is all the same.If subframe 8 is fixed as the dynamic adjustable subframe of up-downlink direction in sub-frame of uplink or eIMTA scene, can only be chosen in fixedly and dispatch subframe 2 on descending sub frame, the winding cycle of simultaneously considering frame structure #0/6 is not 10 milliseconds, and therefore up reference frame structure is #1.
Such scheme can be thought to determine USF1_A and corresponding up-downgoing reference frame structure by predefined mode, as a kind of, substitute or additional project, UE can by understand Radio Resource control (RRC-Radio Resource Control) signaling or physical layer signaling obtain up available subframe and on, descending reference frame structure, benefit is more flexible, shortcoming is to have brought certain signaling consumption, simultaneously if high-level signaling may bring the restriction in scheduling.
Concrete, according to an aspect of the present invention, it is characterized in that, by understand high level or physical layer signaling determine in described USF1_A and described USF2_A one of at least.
As a preferred embodiment, above-mentioned high level or physical layer signaling are sent by community 2.Even the USF1_A for community 1 also can be sent by community 2.
Concrete, according to an aspect of the present invention, it is characterized in that, by understanding high level or physical layer signaling, determine one of at least following:
-community 1 is in the up reference frame structure of carrier wave f1
-community 1 is at the descending reference frame structure of carrier wave f1
Concrete, according to an aspect of the present invention, it is characterized in that, described community 1 is macrocell, described community 2 is small-cell.Macrocell generally has higher transmitting power, generally open predetermined group (OSG-Open Subscriber Group), small-cell generally has lower transmitting power, can be OSG or seals predetermined group (CSG-Close Subscriber Group).
The invention discloses a kind of method of carrying out dual link communication in TDD system equipment, wherein, comprise the steps:
-determine that this community can dispatch the sub-frame of uplink subset USF1_A of UE in the sub-frame of uplink set USF1 of carrier wave f1, and described this community is at up reference frame structure and the descending reference frame structure of described carrier wave f1
-on described carrier wave f1, communicate by letter with described UE, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Wherein, described USF1_A avoids community 2 sub-frame of uplink subset USF2_A to described UE scheduling in the sub-frame of uplink set USF2 of carrier wave f2
Concrete, according to an aspect of the present invention, it is characterized in that, if the subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all descending sub frame, described USF1_A is described USF1, the descending reference frame structure of described carrier wave f1 is the descending reference frame structure of described this community in the single connection scene of described carrier wave f1, and the up reference frame structure of described carrier wave f1 is the up reference frame structure of described this community in the single connection scene of described carrier wave f1.
Concrete, according to an aspect of the present invention, it is characterized in that, if the subframe of described community 2 corresponding to the subset USF1_S1 in described USF1 on described carrier wave f2 is sub-frame of uplink, the subframe of described community 2 corresponding to subset USF1_S2 in described USF1 on described carrier wave f2 is descending sub frame, if the sub-frame of uplink of described USF1_S2 and frame structure #X coincide, described USF1_A is described USF1_S2, and the up reference frame structure of described carrier wave f1 and the descending reference frame structure of described carrier wave f1 are #X.
Concrete, according to an aspect of the present invention, it is characterized in that, according to existing method, determine that described this community is at up reference frame structure and the descending reference frame structure of described carrier wave f1.
As one embodiment of the present of invention, this community is macrocell, community 2 is small-cell, this community upper, descending reference frame structure is wanted compatible traditional UE, can not upgrade definition, therefore according to existing method, determine that this community is at up reference frame structure and the descending reference frame structure of described carrier wave f1, existing method comprises:
In the interference management adaptation transmitter (eIMTA-enhanced Interference Management Traffic Adaptation) that-non-strengthens, on, descending reference frame structure is identical and for system information block (SIB-System Information Block) 1 frame structure configuring
In-eIMTA scene, upper, descending reference frame structure may frame structures different and that do not configure for SIB1.
Said method is to determine described USF1_A and corresponding uplink/downlink frames structure by predefined mode, as a kind of, substitutes or additional project, also can realize by the mode of high level or physical layer signaling configuration.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
One of transmission high level or physical layer signaling configuration are at least following:
-described USF1_A
-described up reference frame structure
-described descending reference frame structure
The invention discloses a kind of subscriber equipment that carries out dual link communication in TDD system, it is characterized in that, this equipment comprises:
The first module: determine that sub-frame of uplink subset USF1_A that community 1 can take in the sub-frame of uplink set USF1 of carrier wave f1 and described community 1 are at up reference frame structure and the descending reference frame structure of described carrier wave f1
The second module: communicate by letter with described community 1 on described carrier wave f1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Downlink Shared Channel (PDSCH) and up replying/non-replying (ACK/NACK) and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Uplink Shared Channel (PUSCH) and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Concrete, according to an aspect of the present invention, it is characterized in that, this equipment also comprises:
The 3rd module: determine that the sub-frame of uplink subset USF2_A that can take and described community 2 are at up reference frame structure and the descending reference frame structure of described carrier wave f2 in the sub-frame of uplink set USF2 of the carrier wave f2 of community 2, wherein,
Described USF2_A is: in described USF2, corresponding subframe is not the subframe of described USF1_A, and described community 2 is determined according to existing method at up reference frame structure and the descending reference frame structure of described carrier wave f2
Four module: 2 communications in carrier wave f2Shang He community, wherein the sequential of the descending reference frame structure of described carrier wave f2 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f2 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF2_A
The invention discloses a kind of network equipment that carries out dual link communication in TDD system, it is characterized in that, this equipment comprises:
The first module: determine that this community can dispatch the sub-frame of uplink subset USF1_A of UE and described this community at up reference frame structure and the descending reference frame structure of described carrier wave f1 in the sub-frame of uplink set USF1 of carrier wave f1
The second module: communicate by letter with described UE on described carrier wave f1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Wherein, described USF1_A avoids community 2 sub-frame of uplink subset USF2_A to described UE scheduling in the sub-frame of uplink set USF2 of carrier wave f2
Concrete, according to an aspect of the present invention, it is characterized in that, this equipment also comprises:
The 3rd module: one of transmission high level or physical layer signaling configuration are at least following:
-described USF1_A
-described up reference frame structure
-described descending reference frame structure
The invention solves in TDD system dual link communication scenes and on two carrier waves, send the problem that upstream data runs into by time division multiplexing, at utmost kept the compatibility with existing system, realize as far as possible flexibly each simultaneously and connect independently scheduling.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the method flow diagram for subscriber equipment according to an embodiment of the invention;
Fig. 2 shows the structured flowchart of the processing unit for base station according to an embodiment of the invention;
Embodiment
Below in connection with accompanying drawing, technical scheme of the present invention is described in further detail, it should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine arbitrarily mutually.
Embodiment 1
Embodiment 1 has described the method flow for subscriber equipment.In the present embodiment, community 1 is small-cell, and the frame structure on carrier wave f1 is #2, and community 2 is macrocells, and the frame structure on carrier wave f2 is #1, and the relative community 1 of subframe index of community 2 has moved to right 5 subframes:
| Community 1 | D | S | U | D | D | D | S | U | D | D |
| Community 2 | D | S | U | U | D | D | S | U | U | D |
What wherein black matrix indicated is subframe 2.
In step C11, determine that respectively community 1 is at the sub-frame of uplink set USF1{2 of carrier wave f1, the sub-frame of uplink subset USF1_A{2} that can take in 7} and definite community 1 are at up reference frame structure #1 and the descending reference frame structure #5 of carrier wave f1.In step C12, determine that community 2 is at the sub-frame of uplink set USF2{2 of carrier wave f2, the sub-frame of uplink subset USF2_A{3 that can take in 3,7,8}, 7,8} and definite community 2 are at up reference frame structure #1 and the descending reference frame structure #1 of carrier wave f2.1 communication and 2 communications in carrier wave f2Shang He community in carrier wave f1Shang He community respectively in step C13.
It should be noted that step C11, do not have strict time sequencing between C12, user can be according to the free deciding step C11 of convenience realizing, the order of C12.
Embodiment 2
Embodiment 2 is a kind of network equipments, comprising the first determination module, and the second determination module, the 3rd sending module and the 4th communication module, as shown in accompanying drawing 2 devices 100.
The first determination module 101: determine that this community can dispatch the sub-frame of uplink subset USF1_A of UE and this community at up reference frame structure and the descending reference frame structure of carrier wave f1 in the sub-frame of uplink set USF1 of carrier wave f1
The second sending module 102: send high level or physical layer signaling and configure described USF1_A
Third communication module 103: and described UE communicates on carrier wave f1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A.
One of ordinary skill in the art will appreciate that all or part of step in said method can come instruction related hardware to complete by program, described program can be stored in computer-readable recording medium, as read-only memory, and hard disk or CD etc.Optionally, all or part of step of above-described embodiment also can realize with one or more integrated circuit.Accordingly, each modular unit in above-described embodiment, can adopt example, in hardware to realize, and also can be realized by the form of software function module, and the application is not limited to the combination of the software and hardware of any particular form.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, to make any modifications, are equal to replacement, improve etc., within all should being included in protection scope of the present invention.
Claims (19)
1. a method of carrying out dual link communication in TDD system customer equipment (UE), wherein, comprises the steps:
-determine that sub-frame of uplink subset USF1_A that community 1 can take in the sub-frame of uplink set USF1 of carrier wave f1 and described community 1 are at up reference frame structure and the descending reference frame structure of described carrier wave f1
-on described carrier wave f1, communicate by letter with described community 1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Downlink Shared Channel (PDSCH) and up replying/non-replying (ACK/NACK) and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Uplink Shared Channel (PUSCH) and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A.
2. method according to claim 1, is characterized in that, also comprises the steps:
-determine that the sub-frame of uplink subset USF2_A that can take and described community 2 are at up reference frame structure and the descending reference frame structure of described carrier wave f2 in the sub-frame of uplink set USF2 of the carrier wave f2 of community 2, wherein,
Described USF2_A is: in described USF2, corresponding subframe is not the subframe of described USF1_A, and described community 2 is determined according to existing method at up reference frame structure and the descending reference frame structure of described carrier wave f2
-2 communications in carrier wave f2Shang He community, wherein the sequential of the descending reference frame structure of described carrier wave f2 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f2 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF2_A.
3. according to the method described in claim 1～2, it is characterized in that, if the subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all descending sub frame, described USF1_A is described USF1, the descending reference frame structure of described carrier wave f1 is the descending reference frame structure of described community 1 in the single connection scene of described carrier wave f1, and the up reference frame structure of described carrier wave f1 is the up reference frame structure of described community 1 in the single connection scene of described carrier wave f1.
4. according to the method described in claim 1～2, it is characterized in that, if the subframe of described community 2 corresponding to described USF1 on described carrier wave f2 is all sub-frame of uplink, described USF1_A is subframe 2, and the descending reference frame structure of described carrier wave f1 is #5.
5. according to the method described in claim 1～2, it is characterized in that, if the subframe of described community 2 corresponding to the subset USF1_S1 in described USF1 on described carrier wave f2 is sub-frame of uplink, the subframe of described community 2 corresponding to subset USF1_S2 in described USF1 on described carrier wave f2 is descending sub frame, if the sub-frame of uplink of described USF1_S2 and frame structure #X coincide, described USF1_A is described USF1_S2, and the up reference frame structure of described carrier wave f1 and the descending reference frame structure of described carrier wave f1 are #X.
6. method according to claim 5, is characterized in that, if the sub-frame of uplink of described USF1_S2 and all frame structures is all misfitted, described USF1_A is subframe 2, and the descending reference frame structure of described carrier wave f1 is #5.
7. according to the method described in claim 1～2, it is characterized in that, if described USF1_A is subframe 2:
If the subframe 8 of-described community 1 on described carrier wave f1 is fixed as descending sub frame, the up reference frame structure of described carrier wave f1 is any one in #2～5
If the subframe 8 of-described community 1 on described carrier wave f1 is sub-frame of uplink or dynamic subframe, the up reference frame structure of described carrier wave f1 is #1.
8. according to the method described in claim 1～2, it is characterized in that, by understand high level or physical layer signaling determine in described USF1_A and described USF2_A one of at least.
9. method according to claim 8, is characterized in that, described high level or physical layer signaling are sent by community 2.
10. method according to claim 8, is characterized in that, by understanding high level or physical layer signaling, determines one of at least following:
-community 1 is in the up reference frame structure of carrier wave f1
-community 1 is at the descending reference frame structure of carrier wave f1.
11. according to the method described in claim 1～2, it is characterized in that, described community 1 is small-cell, and described community 2 is macrocell.
12. 1 kinds of methods of carrying out dual link communication in TDD system equipment, wherein, comprise the steps:
-determine that this community can dispatch the sub-frame of uplink subset USF1_A of UE and described this community at up reference frame structure and the descending reference frame structure of described carrier wave f1 in the sub-frame of uplink set USF1 of carrier wave f1
-on described carrier wave f1, communicate by letter with described UE, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Wherein, described USF1_A avoids community 2 sub-frame of uplink subset USF2_A to described UE scheduling in the sub-frame of uplink set USF2 of carrier wave f2.
13. methods according to claim 12, it is characterized in that, if the subframe of described community 2 corresponding to the subset USF1_S1 in described USF1 on described carrier wave f2 is sub-frame of uplink, the subframe of described community 2 corresponding to subset USF1_S2 in described USF1 on described carrier wave f2 is descending sub frame, if the sub-frame of uplink of described USF1_S2 and frame structure #X coincide, described USF1_A is described USF1_S2, and the up reference frame structure of described carrier wave f1 and the descending reference frame structure of described carrier wave f1 are #X.
14. methods according to claim 12, is characterized in that:
According to existing method, determine that described this community is at up reference frame structure and the descending reference frame structure of described carrier wave f1.
15. methods according to claim 12, is characterized in that, also comprise the steps:
One of transmission high level or physical layer signaling configuration are at least following:
-described USF1_A
-described up reference frame structure
-described descending reference frame structure.
16. 1 kinds of subscriber equipmenies, is characterized in that, this equipment comprises:
The first module: determine that sub-frame of uplink subset USF1_A that community 1 can take in the sub-frame of uplink set USF1 of carrier wave f1 and described community 1 are at up reference frame structure and the descending reference frame structure of described carrier wave f1
The second module: communicate by letter with described community 1 on described carrier wave f1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Downlink Shared Channel (PDSCH) and up replying/non-replying (ACK/NACK) and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of Physical Uplink Shared Channel (PUSCH) and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A.
17. equipment as claimed in claim 16, is characterized in that, this equipment also comprises:
The 3rd module: determine that the sub-frame of uplink subset USF2_A that can take and described community 2 are at up reference frame structure and the descending reference frame structure of described carrier wave f2 in the sub-frame of uplink set USF2 of the carrier wave f2 of community 2, wherein,
Described USF2_A is: in described USF2, corresponding subframe is not the subframe of described USF1_A, and described community 2 is determined according to existing method at up reference frame structure and the descending reference frame structure of described carrier wave f2
Four module: 2 communications in carrier wave f2Shang He community, wherein the sequential of the descending reference frame structure of described carrier wave f2 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f2 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF2_A.
18. 1 kinds of network equipments, is characterized in that, this equipment comprises:
The first module: determine that this community can dispatch the sub-frame of uplink subset USF1_A of UE and described this community at up reference frame structure and the descending reference frame structure of described carrier wave f1 in the sub-frame of uplink set USF1 of carrier wave f1
The second module: communicate by letter with described UE on described carrier wave f1, wherein the sequential of the descending reference frame structure of described carrier wave f1 is observed in the scheduling of PDSCH and uplink ACK/NACK and re-transmission, the sequential of the up reference frame structure of described carrier wave f1 is observed in the scheduling of PUSCH and descending ACK/NACK and re-transmission, and wherein said uplink ACK/NACK and described PUSCH only occur at described sub-frame of uplink subset USF1_A
Wherein, described USF1_A avoids community 2 sub-frame of uplink subset USF2_A to described UE scheduling in the sub-frame of uplink set USF2 of carrier wave f2.
19. equipment as claimed in claim 18, is characterized in that, this equipment also comprises:
The 3rd module: one of transmission high level or physical layer signaling configuration are at least following:
-described USF1_A
-described up reference frame structure
-described descending reference frame structure.
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