CN104427631A - D2D (device to device) transmission method and device - Google Patents
D2D (device to device) transmission method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
Abstract
The invention provides a scheme for avoiding interference on D2D (device to device) data and cell specific SRS (sounding reference signal) in D2D communication. In one embodiment, UE (user equipment) receives an extra signaling, so that UE taking participation in transmitting and receiving the D2D data can determine a reserved C-SRS (cell specific SRS) resource. According to the technical scheme provided by the invention, interference between the D2D data of a cell and the SRS scheduled by the cell is avoided, and particularly the problem that when belonging to multiple service cells, the UE taking participation in transmitting and receiving the D2D data cannot determine the reserved C-SRS resource is solved; therefore the compatibility with an existing system is retained to the maximum extent.
Description
Technical field
The present invention relates to the scheme of subframe scheduling in D2D system, particularly relate to based on the subframe scheduling scheme of Long Term Evolution (LTE-Long Term Evolution) device to device (D2D-Device to Device) framework.
Background technology
In traditional third generation partner program (3GPP-3rd Generation PartnerProject) Long Term Evolution (LTE-Long Term Evolution) system, define two kinds of frame structures, i.e. the frame structure 1 of Frequency Division Duplexing (FDD) (FDD-Frequency Division Duplex) system and the frame structure 2 of time division duplex (TDD-Time Division Duplex) system.The two difference is that each subframe of FDD frame structure is 1 millisecond (ms-millisecond); and TDD system defines 1 ~ 2 special subframe in each frame (10 subframes); special subframe is by downlink synchronization slot (DwPTS-Downlink Pilot Time Slot); protection interval (GP-Guard Period), uplink synchronous time slot (UpPTS-Uplink Pilot Time Slot) three part is formed.
LTE system have employed interception reference signal (SRS-Sounding Reference Signal) and makes system equipment side can obtain up channel parameter (and down channel parameters of TDD system), for the subframe of FDD and the normal sub-frames of TDD, SRS in the end single carrier frequency division multiplexing (SC-FDMA:Single Carrier-Frequency Division Multiple Access) symbol sends, at the special subframe of TDD, SRS can take SC-FDMA symbol in one or two UpPTS (special subframe last or two SC-FDMA symbols).LTE system supports semi-persistent scheduling (SPS-Semi-persistent Scheduling) SRS and dynamic dispatching (DS-Dynamic Scheduling) SRS.The SRS resource that LTE indicates current area reserved by (community is public) RRC signaling SoundingRS-UL-ConfigCommon information particle (IE-Information Element).Reserved SRS and SRS bandwidth is contained in described SoundingRS-UL-ConfigCommon.
In traditional 3GPP version, transfer of data occurs between base station and subscriber equipment (UE-UserEquipment).In 3GPP R12, device is also discussed by project verification device (D2D-Device to Device) communication, and the essential characteristic of D2D allows the transfer of data between UE.For FDD and TDD system, the conclusion that 3GPP reaches wireless access network first working group the 73rd meeting (RAN1#73) is: the UE in D2D system does not allow to receive and dispatch simultaneously.Further, in order to avoid the interference that downlink data communicates to D2D, the sub-frame of uplink of upstream band and subframe (TDD) that UE takies traditional ascending resource and FDD is used for D2D and communicates (TDD descending sub frame needs to be discussed further).
In order to be distinguished with D2D data, in the present invention, community is reserved at SoundingRS-UL-ConfigCommon IE the SRS that resource is dispatched and is called C-SRS(Cell specific SRS by us).SRS resource reserved in the Serving cell belonging to UE in D2D data and D2D bunch may collide and produce interference, and described D2D bunch refers to that 2 of participating in D2D communication or multiple UE gather.The invention discloses a kind of method and solve D2D data and this problem of the interference of C-SRS on ascending resource.
Summary of the invention
The invention discloses the method for carrying out in a kind of subscriber equipment (UE) communicating, wherein, comprise the steps:
A. operation scheduling control signal (SCI), described operation receives or sends
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
If D2D scheduling is also adopt subframe to be the scheduling of unit, the subframe that described mapped resource M is dispatched by described SCI and the bandwidth that described SCI dispatches are determined.As an embodiment, described SCI is dynamic signaling and reuses the uplink scheduling sequential of LTE system, then, for FDD system, described mapped resource M is the bandwidth resources of the described SCI scheduling in the 4th subframe after the transmission subframe of described SCI.
Further, if described mapped resource M is normal sub-frames (not namely being the special subframe of TDD), describedly overlappingly refer to that last the SC-FDMA symbol of the subframe that described SCI dispatches is reserved for C-SRS subframe and the bandwidth that the bandwidth sum that described SCI dispatches is reserved as C-SRS overlaps in whole or in part.
Described SCI is the control signal of scheduling D2D communication, be sent to UE or the D2D bunch of head UE participating in D2D data transmit-receive and be sent to the UE participating in D2D data transmit-receive, or the UE participating in D2D data transmit-receive is sent to the UE participating in D2D data transmit-receive by system equipment.Described SCI is DS signaling or SPS signaling, and described SCI reuses existing DCI or adopts new payload size and bit connotation; Described data resource S is for carrying data (comprising control information) and demodulated reference signal; If future devises new D2D SRS and not at last symbol of subframe, described data resource S is also for carrying described D2D SRS; Described symbol is SC-FDMA symbol.If described SCI also can dispatch SRS except data dispatching resource on described running time-frequency resource R, then send SRS in relevant position.
If contain protection interval (GP-Guard Period) in the resource that D2D dispatches to avoid the interference because propagation delay or reiving/transmitting state handoff delay cause, described data resource S comprises described GP.As an embodiment, it is 0,1,2 that described data resource S comprises that 14 symbol-symbols draw ..., 13, wherein symbol 1 ~ 12 carries data, and symbol 0, namely 13 do not carry data as GP.As another embodiment, it is 0 that described data resource S comprises that 13 symbol-symbols draw, 1,2 ..., 12, wherein symbol 1 ~ 11, the latter half of symbol 0 and the first half carrying data of symbol 12, namely the first half of symbol 0 and the latter half of symbol 12 do not carry data as GP, and the mapped resource M and reserved community interception reference signal (C-SRS) the running time-frequency resource R that do not comprise symbol 13(and described SCI have overlapping).
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps:
B. send on described data resource S according to the instruction of described SCI or receiving equipment to equipment (D2D) signal.
Concrete, according to an aspect of the present invention, it is characterized in that, it is characterized in that, comprise C-SRS indication information in described SCI, described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps: before described step
A0_1. on the channel resource of system equipment to UE, SoundingRS-UL-ConfigCommon IE is received to determine described running time-frequency resource R1.
Described SoundingRS-UL-ConfigCommon is that the community common radio resources that LTE system issues controls (RRC-Radio Resource Control) signaling.
Concrete, according to an aspect of the present invention, it is characterized in that, also comprise the steps: before described step
A0_2. on the channel resource of system equipment to UE, receive the first signaling to determine described running time-frequency resource R2, the first signaling is UE specific RRC signaling or the specific RRC signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
Described UE specifically refers to that particular UE can receive, and described UE group specifically refers to that the UE in particular UE group can receive.Described C-SRS sub-frame information indicates the subframe transmitting C-SRS, and described C-SRS bandwidth information indicates C-SRS bandwidth shared in described C-SRS subframe.As an embodiment, described C-SRS sub-frame information and described C-SRS bandwidth information are one group of srs-SubframeConfig and srs-BandwidthConfig respectively, are used to indicate the reserved C-SRS information of Serving cell belonging to a UE in D2D bunch.As another embodiment, described C-SRS sub-frame information and described C-SRS bandwidth information are many group srs-SubframeConfig and srs-BandwidthConfig respectively, are used to indicate the reserved C-SRS information of Serving cell belonging to multiple UE in D2D bunch.Above-mentioned srs-SubframeConfig and srs-BandwidthConfig is the instruction for the public C-SRS bandwidth information of allocating cell public C-SRS sub-frame information and community in LTE system respectively.
As another embodiment, described C-SRS sub-frame information comprises 10 bits, and whether a subframe in each bit instruction frame can transmit C-SRS, and corresponding each subframe transmitting C-SRS, provides one group of srs-BandwidthConfig.In TDD system, if D2D data can send in UpPTS, described C-SRS indication signaling also comprises the C-SRS bandwidth in UpPTS.
Concrete, according to another aspect of the present invention, it is characterized in that, also comprise the steps: before described step
A0_3. on D2D channel resource, receive one or more signaling to determine described running time-frequency resource R2, each described signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
Each described signaling is sent by a UE.Exist and only have altogether in the scene of 2 UE in bunch head or D2D bunch, receive a signaling; D2D bunch has more than 2 UE and does not exist in the scene of bunch head, receiving multiple signaling.Described running time-frequency resource R2 is the union receiving the reserved C-SRS resource that all described signalings obtain.
Concrete, according to another aspect of the present invention, it is characterized in that, also comprise the steps:
A0_4. send the 3rd signaling with indicate current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky.
3rd signaling sends on D2D channel resource or on cell uplink channel resource, and the 3rd signaling reuses srs-SubframeConfig and srs-BandwidthConfig form.Further, the 3rd signaling also can adopt new form.
The invention discloses a kind of method of carrying out in system equipment communicating, wherein, comprise the steps:
A. send scheduling control signaling (SCI), described SCI is the control signal of scheduling D2D communication, the mapped resource M of described SCI and current service cell the C-SRS running time-frequency resource R1 that reserves have overlapping
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
Concrete, according to another aspect of the present invention, it is characterized in that, also comprise the steps:
B. receive C-SRS signal, described C-SRS signal and described mapped resource M have overlapping
Concrete, according to another aspect of the present invention, it is characterized in that, comprise C-SRS indication information in described SCI, described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
The invention discloses a kind of method of carrying out in system equipment communicating, wherein, comprise the steps:
A1_2. on the channel resource of system equipment to UE, the first signaling is sent to be designated as the running time-frequency resource R2 of D2D communication reservation, first signaling is UE specific RRC signaling or the specific RRC signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, also comprise the steps: before described step
A1_1. described running time-frequency resource R2 is obtained by X2 interface receipt message.
The invention discloses a kind of method of carrying out in system equipment communicating, wherein, comprise the steps:
-by X2 interface send message instruction current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserves.
The invention discloses a kind of subscriber equipment, it is characterized in that, this equipment comprises:
First module: operation scheduling control signal (SCI), described operation receives or sends
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
As an embodiment, also comprise in the said equipment:
Second module: send on described data resource S according to the instruction of described SCI or receiving equipment to equipment (D2D) signal.
As another embodiment, also comprise one of at least following in the said equipment:
3rd module: receive the first signaling to determine described running time-frequency resource R2 on the channel resource of system equipment to UE, first signaling is UE specific RRC signaling or the specific RRC signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
Four module: receive one or more signaling to determine described running time-frequency resource R2 on D2D channel resource, each described signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
As an embodiment, the feature of the said equipment is, comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
The invention discloses a kind of system equipment, it is characterized in that, this equipment comprises:
First module: send scheduling control signaling (SCI), described SCI is the control signal of scheduling D2D communication, the mapped resource M of described SCI and current service cell the C-SRS running time-frequency resource R1 that reserves have overlapping
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
As an embodiment, the feature of the said equipment is, comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
As an embodiment, also comprise in the said equipment:
Second module: receive C-SRS signal, described C-SRS signal and described mapped resource M have overlapping
The invention discloses a kind of system equipment, it is characterized in that, this equipment comprises:
3rd module: obtain the running time-frequency resource R2 for D2D communication reservation by X2 interface receipt message
Four module: send the first signaling to indicate described running time-frequency resource R2 on the channel resource of system equipment to UE, first signaling is UE specific RRC signaling or the specific RRC signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
5th module: receive SoundingRS-UL-ConfigCommon information particle (IE) to determine described running time-frequency resource R1 on the channel resource of system equipment to UE.
The invention solves the interference between D2D data and the SRS of cell scheduling, especially when the UE of participation D2D data transmit-receive belongs to multiple Serving cell, UE cannot determine the C-SRS resource reserved, for this problem, receiving extra signaling by allowing UE makes the UE participating in D2D data transmit-receive can determine the C-SRS resource reserved, and the present invention at utmost maintains the compatibility with existing system.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the flow chart that center control nodes control D2D according to an embodiment of the invention communicates;
Fig. 2 shows the flow chart that distributed AC servo system D2D according to an embodiment of the invention communicates;
Fig. 3 shows the reserved C-SRS running time-frequency resource instruction schematic diagram that two UE that D2D according to an embodiment of the invention communicates belong to different service cells;
Fig. 4 shows the schematic diagram that two UE belonging to different service cells according to an embodiment of the invention carry out D2D communication;
Fig. 5 shows part UE part UE schematic diagram outside MPS process in MPS process that D2D according to an embodiment of the invention communicates;
Fig. 6 non-scheduled signaling of reception shown in subscriber equipment according to an embodiment of the invention obtains the processing unit structured flowchart of reserved C-SRS running time-frequency resource;
Fig. 7 receiving scheduling signaling shown in subscriber equipment according to an embodiment of the invention obtains the processing unit structured flowchart of reserved C-SRS running time-frequency resource;
Embodiment
Hereafter will be described in further detail technical scheme of the present invention by reference to the accompanying drawings, and it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.
Embodiment 1
Embodiment 1 illustrates the flow chart that center control nodes control D2D communicates, as shown in Figure 1.In accompanying drawing 1, center control nodes T1 is that base station or bunch head UE, UE U2 and UE U3 participate in D2D data transmit-receive under the control of T1.
For center control nodes T1, send SCI in step s 11, described SCI is dynamic dispatching signaling or semi-persistent scheduling signaling.Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises:
Serving cell belonging to-T1 the C-SRS running time-frequency resource R1_T1 that reserves, if be in outside MPS process, described running time-frequency resource R1_T1 is empty
Serving cell belonging to-U2 Serving cell belonging to the C-SRS running time-frequency resource reserved and U3 the union of C-SRS running time-frequency resource reserved, i.e. running time-frequency resource R2_T1.
For UE U1, receive described SCI in the step s 21, in step S22, perform the scheduling of described SCI, the data resource S namely dispatched at described SCI sends data.Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises:
Serving cell belonging to-U1 the C-SRS running time-frequency resource R1_U1 that reserves, if be in outside MPS process, described running time-frequency resource R1_U1 is empty
Serving cell belonging to-U2 Serving cell belonging to the C-SRS running time-frequency resource reserved and T1 the union of C-SRS running time-frequency resource reserved, i.e. running time-frequency resource R2_U1.
For UE U2, in step S31, receive described SCI, perform the scheduling of described SCI in step s 32, the data resource S namely dispatched at described SCI receives data.Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises:
Serving cell belonging to-U2 the C-SRS running time-frequency resource R1_U2 that reserves, if be in outside MPS process, described running time-frequency resource R1_U2 is empty
Serving cell belonging to-U1 Serving cell belonging to the C-SRS running time-frequency resource reserved and T1 the union of C-SRS running time-frequency resource reserved, i.e. running time-frequency resource R2_U2.
Embodiment 2
Embodiment 2 illustrates the flow chart that distributed AC servo system D2D communicates, as shown in Figure 2.In accompanying drawing 2, three UE U17, U18 U19 constitute the D2D UE bunch participating in D2D communication, and wherein each UE can send the transmitting-receiving that SCI dispatches D2D data.Illustrate U17 in accompanying drawing 2 and send the transmitting-receiving of SCI scheduling D2D broadcast data.
For U17, in step S171, send a SCI, in step S172, on the data resource S of a SCI scheduling, send data.Wherein, if the mapped resource M of a SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, described data resource S does not comprise described overlapping shared symbol, described running time-frequency resource R comprises U17, U18, U19 separately belonging to Serving cell the union of C-SRS running time-frequency resource reserved.
For U18, in step S181, receive a SCI, in step S182, on the data resource S of a SCI scheduling, receive data.Wherein, if the mapped resource M of a SCI and above-mentioned running time-frequency resource R has overlapping, described data resource S does not comprise described overlapping shared symbol.
For U19, in step S191, receive a SCI, in step S192, on the data resource S of a SCI scheduling, receive data.Wherein, if the mapped resource M of a SCI and above-mentioned running time-frequency resource R has overlapping, described data resource S does not comprise described overlapping shared symbol.
Embodiment 3
Two UE that embodiment 3 illustrates D2D communication belong to the reserved C-SRS running time-frequency resource instruction flow chart of different service cells, as shown in Figure 3.Wherein, base station N4 is the Serving cell of UE U5, and base station N7 is the Serving cell of UE U6, U5 with U6 carries out D2D and communicate.
For base station N4, send by X2 interface the C-SRS running time-frequency resource R1 that signaling H1 indicates base station N4 reserved to base station N7 in step s 40; The signaling H2 received from base station N7 by X2 interface in step S41 obtains the reserved C-SRS running time-frequency resource R2 of base station N7; SUC(SoundingRS-UL-ConfigCommon is sent in step S42) indicate described running time-frequency resource R1; In step S43, send signaling C1 indicate described running time-frequency resource R2, described signaling C1 is the specific RRC signaling of UE.Similar, for base station N7, in step S70, send by X2 interface the C-SRS running time-frequency resource R2 that signaling H2 indicates base station N7 reserved to base station N4; The signaling H1 received from base station N4 by X2 interface in step S71 obtains the reserved C-SRS running time-frequency resource R1 of base station N4; SUC(SoundingRS-UL-ConfigCommon is sent in step S72) indicate described running time-frequency resource R2; In step S73, send signaling C2 indicate described running time-frequency resource R1, described signaling C2 is the specific RRC signaling of UE.Above-mentioned steps S42 and S72 has reused the operation in existing LTE version, in fig. 3 with broken line representation.
For UE U5, the SUC IE receiving Serving cell in step s 51 obtains the information of described running time-frequency resource R1, receives the information that described signaling C1 obtains described running time-frequency resource R2 in step S52.For UE U6, the SUC IE receiving Serving cell in step S61 obtains the information of described running time-frequency resource R2, receives the information that described signaling C2 obtains described running time-frequency resource R1 in step S62.
Embodiment 4
Embodiment 4 illustrates the schematic diagram that two UE belonging to different service cells carry out D2D communication, as shown in Figure 4.Wherein, base station N40 is the Serving cell of UE U50, and base station N70 is the Serving cell of UE U60, U50 with U60 carries out D2D and communicate, and wherein U50 is a bunch head UE.
For base station N40, the signaling H2 received from base station N70 by X2 interface in step S401 obtains the reserved C-SRS running time-frequency resource R2 of base station N70; In step S402, send union and running time-frequency resource R that signaling C1 indicates described running time-frequency resource R1 and described running time-frequency resource R2, described signaling C1 is the specific RRC signaling of UE.For base station N70, in step S700, send by X2 interface the C-SRS running time-frequency resource R2 that signaling H2 indicates base station N7 reserved to base station N40.
For UE U50, in step S501, receive the information that described signaling C1 obtains described running time-frequency resource R; In step S502, send SCI dispatch D2D communication, C-SRS indication information is comprised in described SCI, described C-SRS indication information indicate the mapped resource M of described SCI and described running time-frequency resource R whether to have the data resource of overlapping i.e. described SCI scheduling whether to comprise overlapping shared SC-FDMA symbol (i.e. last symbol of normal sub-frames) if-have overlapping, the data resource of described SCI scheduling does not comprise overlapping shared SC-FDMA symbol, on the contrary the data resource of then described SCI scheduling comprise overlapping shared by SC-FDMA symbol; The data resource dispatched at described SCI in step S503 receives data.
For UE U60, described SCI is received in step S602, C-SRS indication information is comprised in described SCI, described C-SRS indication information indicate the mapped resource M of described SCI and described running time-frequency resource R whether to have the data resource of overlapping i.e. described SCI scheduling whether to comprise overlapping shared SC-FDMA symbol (i.e. last symbol of normal sub-frames) if-have overlapping, the data resource of described SCI scheduling does not comprise overlapping shared SC-FDMA symbol, on the contrary the data resource of then described SCI scheduling comprise overlapping shared by SC-FDMA symbol; The data resource dispatched at described SCI in step S603 sends data.
In embodiment 4, UE U50 is a bunch head, is responsible for the scheduling of D2D communication, utilizes the described C-SRS indication information in described SCI to indicate described data resource, therefore do not need additional notifications UEU60 about the information of described running time-frequency resource R.
Embodiment 5
Embodiment 5 illustrates part UE part UE schematic diagram outside MPS process in MPS process of D2D communication, as shown in Figure 5.Wherein, base station N10 is the Serving cell of UE U11, UEU12 and UE U13 is in outside MPS process, and U11, U12 and U13 carry out D2D and communicate.
For base station N10, in step S101, send the C-SRS running time-frequency resource R that signaling C3 instruction is reserved.
For UE U11, the signaling D1 from U12 and the signaling D2 from U13 is received respectively in step S110 and step S111, obtain U12 and U13 separately belonging to the union of C-SRS resource reserved of Serving cell and running time-frequency resource R2(R2 be empty set, namely reserve C-SRS resource); The SUC IE received in step S112 from Serving cell N10 obtains the reserved C-SRS running time-frequency resource R1 of N10; In step S113, send signaling D3 indicate described running time-frequency resource R1 to U12 and U13.
For UE U12, send the C-SRS resource that belonging to signaling D1 instruction, Serving cell is reserved in the step s 120, in step S121 and step S122, receive the signaling D2 from U13 and the signaling D3 from U11 respectively, obtain U13 and the U11 C-SRS resource that affiliated Serving cell is reserved separately.
For UE U13, the C-SRS resource that belonging to signaling D2 instruction, Serving cell is reserved is sent in step S131, in step S130 and step S132, receive the signaling D1 from U12 and the signaling D3 from U11 respectively, obtain U12 and the U11 C-SRS resource that affiliated Serving cell is reserved separately.
Embodiment 6
The embodiment 6 non-scheduled signaling of reception illustrated in subscriber equipment obtains the processing unit structured flowchart of reserved C-SRS running time-frequency resource, as shown in Figure 6.In accompanying drawing 6, the processing unit 400 in UE is by resource distribution module 401, and signaling manipulation module 402, data processing module 403 forms.
Wherein resource distribution module 401 determines the C-SRS running time-frequency resource R reserved, signaling manipulation module 402 receives or sends scheduling control signaling (SCI), wherein, if the mapped resource M of described SCI and described running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
Data processing module 403 performs the data dispatch of described dispatch SCI, namely receives on described data resource S or sends data.
Described resource distribution module 401 comprises one of at least following submodule:
-on the channel resource of system equipment to UE, receiving the first signaling to determine described running time-frequency resource R2, the first signaling is the specific high-level signaling of UE or the specific high-level signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
-on D2D channel resource, receiving one or more signaling to determine described running time-frequency resource R2, each described signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
-on the channel resource of system equipment to UE, receive SoundingRS-UL-ConfigCommon information particle (IE) to determine described running time-frequency resource R1.
Embodiment 7
The embodiment 7 receiving scheduling signaling illustrated in subscriber equipment obtains the processing unit structured flowchart of reserved C-SRS running time-frequency resource, as shown in Figure 7.In accompanying drawing 7, the processing unit 500 in UE is by signaling manipulation module 501, and data processing module 502 forms.
Wherein signaling manipulation module 501 receives or sends scheduling control signaling (SCI), comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
Data processing module 502 performs the data dispatch of described dispatch SCI, namely receives on described data resource S or sends data.
The all or part of step that one of ordinary skill in the art will appreciate that in said method can be carried out instruction related hardware by program and complete, and 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 use one or more integrated circuit to realize.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, 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, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improves, all should be included within protection scope of the present invention.
Claims (22)
1. carry out the method communicated in subscriber equipment (UE), wherein, comprise the steps:
A. operation scheduling control signal (SCI), described operation receives or sends
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
2. method according to claim 1, is characterized in that, also comprises the steps:
B. send on described data resource S according to the instruction of described SCI or receiving equipment to equipment (D2D) signal.
3. according to claim 1, the method described in 2, is characterized in that, comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
4. method according to claim 1, is characterized in that, also comprises the steps: before described step
A0_1. on the channel resource of system equipment to UE, SoundingRS-UL-ConfigCommon information particle (IE) is received to determine described running time-frequency resource R1.
5. the method according to claim Isosorbide-5-Nitrae, is characterized in that, also comprises the steps: before described step
A0_2. on the channel resource of system equipment to UE, the first signaling is received to determine described running time-frequency resource R2, first signaling is the specific high-level signaling of UE or the specific high-level signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
6. the method according to claim Isosorbide-5-Nitrae, is characterized in that, also comprises the steps: before described step
A0_3. on D2D channel resource, receive one or more signaling to determine described running time-frequency resource R2, each described signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
7. the method according to claim Isosorbide-5-Nitrae, is characterized in that, also comprises the steps: before described step
A0_4. send the 3rd signaling with indicate current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky.
8. carry out the method communicated in system equipment, wherein, comprise the steps:
A. send scheduling control signaling (SCI), described SCI is the control signal of scheduling D2D communication, the mapped resource M of described SCI and current service cell the C-SRS running time-frequency resource R1 that reserves have overlapping
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
9. method according to claim 8, is characterized in that, also comprises the steps:
B. receive C-SRS signal, described C-SRS signal and described mapped resource M have overlapping.
10. method according to claim 8, is characterized in that, comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
Carry out the method communicated in 11. 1 kinds of system equipments, wherein, comprise the steps:
A1_2. on the channel resource of system equipment to UE, the first signaling is sent to be designated as the running time-frequency resource R2 of D2D communication reservation, first signaling is the specific high-level signaling of UE or the specific high-level signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
12. methods according to claim 11, is characterized in that, also comprise the steps: before described step
A1_1. described running time-frequency resource R2 is obtained by X2 interface receipt message.
Carry out the method communicated in 13. 1 kinds of system equipments, wherein, comprise the steps:
-by X2 interface send message instruction current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserves.
14. 1 kinds of subscriber equipmenies, is characterized in that, this equipment comprises:
First module: operation scheduling control signal (SCI), described operation receives or sends
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
15. equipment according to claim 14, is characterized in that, this equipment also comprises:
Second module: send on described data resource S according to the instruction of described SCI or receiving equipment to equipment (D2D) signal.
16. equipment according to claim 14, is characterized in that, this equipment also comprises one of at least following:
3rd module: receive the first signaling to determine described running time-frequency resource R2 on the channel resource of system equipment to UE, first signaling is the specific high-level signaling of UE or the specific high-level signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
Four module: receive one or more signaling to determine described running time-frequency resource R2 on D2D channel resource, each described signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
5th module: receive SoundingRS-UL-ConfigCommon information particle (IE) to determine described running time-frequency resource R1 on the channel resource of system equipment to UE.
17. according to claim 14, and the equipment described in 15, is characterized in that, comprises C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
18. 1 kinds of system equipments, is characterized in that, this equipment comprises:
First module: send scheduling control signaling (SCI), described SCI is the control signal of scheduling D2D communication, the mapped resource M of described SCI and current service cell the C-SRS running time-frequency resource R1 that reserves have overlapping
Wherein, if the mapped resource M of described SCI and reserved community interception reference signal (C-SRS) running time-frequency resource R has overlapping, the data resource S of described SCI scheduling does not comprise described overlapping shared symbol, and described running time-frequency resource R comprises one of at least following:
-current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserve, if be in outside MPS process, described running time-frequency resource R1 is sky
-be the running time-frequency resource R2 of D2D communication reservation.
19. equipment according to claim 18, is characterized in that, this equipment also comprises:
Second module: receive C-SRS signal, described C-SRS signal and described mapped resource M have overlapping.
20. equipment according to claim 18, is characterized in that, comprise C-SRS indication information in described SCI, and described C-SRS indication information indicates described data resource S whether to comprise described overlapping shared symbol.
21. 1 kinds of system equipments, is characterized in that, this equipment comprises:
3rd module: obtain the running time-frequency resource R2 for D2D communication reservation by X2 interface receipt message
Four module: send the first signaling to indicate described running time-frequency resource R2 on the channel resource of system equipment to UE, first signaling is the specific high-level signaling of UE or the specific high-level signaling of UE group, and the first signaling at least comprises C-SRS sub-frame information and C-SRS bandwidth information.
22. 1 kinds of system equipments, is characterized in that, this equipment comprises:
5th module: by X2 interface send message instruction current belonging to Serving cell the C-SRS running time-frequency resource R1 that reserves.
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Effective date of registration: 20240104 Address after: 518040 unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Xiangmihu street, Futian District, Shenzhen, Guangdong Province Patentee after: Honor Device Co.,Ltd. Address before: 9/F, No. 11, Lane 4666, Gonghexin Road, Zhabei, Shanghai, 200072 Patentee before: SHANGHAI LANGBO COMMUNICATION TECHNOLOGY Co.,Ltd. |