CN102448171A - Method for dispatching crossed carriers in aggregation of carriers with different uplink and downlink proportions - Google Patents
Method for dispatching crossed carriers in aggregation of carriers with different uplink and downlink proportions Download PDFInfo
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- CN102448171A CN102448171A CN2012100213761A CN201210021376A CN102448171A CN 102448171 A CN102448171 A CN 102448171A CN 2012100213761 A CN2012100213761 A CN 2012100213761A CN 201210021376 A CN201210021376 A CN 201210021376A CN 102448171 A CN102448171 A CN 102448171A
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Abstract
The invention discloses a method for dispatching crossed carriers in aggregation of carriers with different uplink and downlink proportions. The method comprises the following steps that: A whether the uplink and downlink of a subframe of a dispatched component carrier are consistent with those of a subframe of a dispatching component carrier is judged, if so, a step B is performed; otherwise, a step C is performed; B the dispatching component carrier performs crossed carrier dispatching on the subframe of the dispatched component carrier and ends the flow; and C an e-PDCCH (physical downlink control channel) is arranged in the downlink subframe of the dispatched component carrier and is used for dispatching the subframe of the dispatched component carrier. According to the scheme in the invention, the problem in the prior art that authority can not be sent out during the crossed carrier dispatching in aggregation of carriers with different uplink and downlink proportions is sovled.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly carrier aggregation technology relates in particular to and intersects carrier scheduling method in a kind of different up-downgoing proportioning carrier aggregation.
Background technology
In senior Long Term Evolution project time division duplex version 10 (LTE-A TDD Release10), introduce the carrier aggregation notion to support more wide bandwidth transmission, promptly two or more carrier waves are grouped together in together, to support the transmission of LTE-A transmission bandwidth greater than 20MHz.TD for the carrier aggregation of Release10; (intra-band) scene in the band support; This frequency range (band) is the spendable Radio Resource frequency spectrum resource that International Telecommunications Union confirms; If produce serious disturbance when adopting different up-downgoing proportionings can make up and descending transmitting-receiving, so each member carrier of polymerization (component carrier) adopts identical TDD up-downgoing proportioning
Table 1 is depicted as the ascending-descending subframes configuration mode of TDD, has wherein listed ascending-descending subframes configurations different in 7.Letter D representes that this subframe is a descending sub frame; Letter U representes that this subframe is a sub-frame of uplink; Letter S representes that this subframe is that special subframe (comprises descending pilot frequency time slot (DwPTS, Downlink Pilot Time Slot), uplink pilot time slot (UpPTS; Uplink Pilot Time Slot), protection time slot (Guard Period)).
Table 1
Be illustrated in figure 1 as in the prior art among a kind of typical R elease10 the up-downgoing proportioning of each member carrier under the carrier aggregation scene, wherein member carrier 1 (CC1) all adopts the up-corresponding up-downgoing proportioning of downstream arrangements sign 1 (being designated hereinafter simply as configuration 1) shown in the table 1 to member carrier 5 (CC5).
In Release10; In order to reduce of the interference of isomery scene to control channel; Introduced intersection carrier dispatching notion, i.e. the control information of a carrier wave can be distinguished the carrier wave that is scheduled through the carrier wave indication territory (CIF) that adds 3bit in Downlink Control Information (DCI) front by other carriers carry.Be illustrated in figure 2 as the sketch map of intersection carrier dispatching; Wherein the Physical Downlink Control Channel (PDCCH) of carrier wave 0 (CC0) has carried the control information of these three carrier waves of CC0-CC2, comes the Physical Downlink Shared Channel (PDSCH) of corresponding CC0-CC2 respectively with the different values of CIF.
In Release11, will introduce (inter-band) carrier aggregation between frequency range, to reach the utilization of resources more flexibly.When different frequency range uses different up-downgoing proportionings, the scene that sub-frame of uplink conflicts with descending sub frame may appear, be depicted as the sketch map that carrier aggregation different frequency range between frequency range uses different up-downgoing proportionings like Fig. 3 a to Fig. 3 c.Wherein the CC1 of Fig. 3 a uses the configuration 1 shown in the table 1, and CC2 uses the configuration 2 shown in the table 1, has occurred the situation (subframe shown in the ellipse) of ascending-descending subframes conflict respectively in subframe 3 and subframe 8.The CC1 of Fig. 3 b uses configuration 3, and CC2 uses configuration 4, the ascending-descending subframes conflict occurs in subframe 4.The CC1 of Fig. 3 c uses configuration 2, and CC2 uses configuration 4, the situation of ascending-descending subframes conflict all occurs in subframe 3, subframe 6 and subframe 7.
This situation can influence the intersection carrier dispatching, therefore need revise to adapt to new scene for the intersection carrier dispatching of Rel-10 definition.In Rel-10, also defined the notion of sub-district (Cell), the up CC that each Cell comprises a descending CC and is connected.
The enhancement mode Physical Downlink Control Channel is being discussed in Rel-11 at present, and promptly e-PDCCH transmits PDCCH to reach the purpose that strengthens the control channel capacity through some zone in PDSCH.Be illustrated in figure 4 as the configuration schematic diagram of PDCCH and e-PDCCH.
The intersection carrier dispatching of Rel-10 can comprise that the PDCCH of a CC dispatches the situation of the PDSCH/ Physical Uplink Shared Channel (PUSCH) of another CC.Under the situation that TDD different frequency range difference disposes up and down, have four kinds of situation shown in Figure 5.As Fig. 5 (a) (c) shown in, then no problem if the relation corresponding scheduling subframe of subframe that is scheduled is a descending sub frame chronologically, can be according to the intersection carrier dispatching of Rel-10 definition.As Fig. 5 (b) (d) shown in, if the relation corresponding scheduling subframe of subframe that is scheduled is a sub-frame of uplink chronologically,, can't send mandate because the scheduling subframe is a sub-frame of uplink, therefore can not dispatch.
Summary of the invention
The invention provides and intersect carrier scheduling method in a kind of different up-downgoing proportioning carrier aggregation, can realize the carrier dispatching that TDD different frequency range difference disposes up and down.
Intersect carrier scheduling method in a kind of different up-downgoing proportioning carrier aggregation that the embodiment of the invention provides, comprise the steps:
Whether the subframe that A judges the member's carrier wave that is scheduled is consistent with the up-downgoing of the corresponding subframe of scheduling member carrier, if, execution in step B, otherwise, execution in step C;
B, scheduling member carrier intersect carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled said subframe of member's carrier wave of e-PDCCH scheduling.
Preferably, this method is used for LTE-A TDD system.
Preferably, before the said steps A, further comprise:
AA, judge the scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out said steps A, otherwise, execution in step D;
D, for the up-downgoing inconsistent subframe of member's carrier wave that be scheduled with the corresponding subframe of scheduling member carrier, according to the scheduling of the former carrier wave that is scheduled regularly, whether the be scheduled subframe of member's carrier wave of judgement carries uplink authorization; If; Execution in step E, otherwise, execution in step F;
E, in the descending sub frame of the said member's of being scheduled carriers carry uplink authorization, e-PDCCH is set, uses the be scheduled said subframe of member's carrier wave of e-PDCCH scheduling;
F, scheduling member carrier intersect carrier dispatching to the said subframe of the member's carrier wave that is scheduled.
Preferably, before the said steps A, further comprise:
AB, judge the scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out said steps A, otherwise, execution in step G;
G, for the up-downgoing inconsistent subframe of member's carrier wave that be scheduled with the corresponding subframe of scheduling member carrier, according to the scheduling timing of the former carrier wave that is scheduled, intersect carrier dispatching in the corresponding subframe of scheduling carrier wave; For the up-downgoing consistent subframe of member's carrier wave that be scheduled, regularly intersect carrier dispatching by the scheduling of scheduling carrier wave with the corresponding subframe of scheduling member carrier.
Preferably, said scheduling member carrier uses the identical switching point cycle with the member's carrier wave that is scheduled.
Preferably, the said switching point cycle is 5ms or 10ms.
Can find out from above technical scheme; When the up-downgoing of the subframe of the member's carrier wave that the is scheduled subframe corresponding with the scheduling member carrier is inconsistent; In the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set; Use the e-PDCCH scheduling said subframe of member's carrier wave that is scheduled, intersect carrier dispatching in the different up-downgoing proportioning carrier aggregation and can't send the problem of mandate thereby solved.
Description of drawings
Fig. 1 is the up-downgoing proportioning sketch map of each member carrier under the carrier aggregation scene among a kind of typical R elease10 in the prior art;
Fig. 2 is the sketch map of intersection carrier dispatching;
Fig. 3 a to Fig. 3 c is the sketch map that the carrier aggregation different frequency range uses different up-downgoing proportionings between frequency range;
Fig. 4 is the configuration schematic diagram of PDCCH and e-PDCCH;
Fig. 5 is the sketch map of four kinds of situation disposing up and down in TDD different frequency range difference;
Fig. 6 is less than the sketch map of the CC that is scheduled for the scheduling CC descending sub frame of the embodiment of the invention one;
Fig. 7 is the sketch map of the scheduling CC descending sub frame of the embodiment of the invention one more than the CC that is scheduled;
The carrier scheduling method schematic flow sheet that Fig. 8 provides for the embodiment of the invention one;
Fig. 9 is the sketch map of the scheduling CC descending sub frame of the embodiment of the invention two more than the CC that is scheduled;
The carrier scheduling method schematic flow sheet that Figure 10 provides for the embodiment of the invention two.
Embodiment
Intersect carrier scheduling method in a kind of different up-downgoing proportioning carrier aggregation that the present invention proposes, comprise following basic step:
Whether the subframe that A judges the member's carrier wave that is scheduled is consistent with the up-downgoing of the corresponding subframe of scheduling member carrier, if, execution in step B, otherwise, execution in step C;
B, scheduling member carrier intersect carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled said subframe of member's carrier wave of e-PDCCH scheduling.
The present invention is applicable to the full duplex scene; For configuration 0-configuration 6 these seven kinds of ratio of uplink subframe to downlink subframe; Because mixing match has the complexity of considerable influence and design higher to standard, so the present invention will use the hypothesis in identical switching point cycle based on the polymerization carrier wave.Suppose that different CC only dispose the combination of the subframe proportioning of 5ms or 10ms.Call scheduling CC to the CC that carries scheduling authorization simultaneously, the CC that scheduling authorization transmits on other CC is called the CC that is scheduled.Different according to sub-frame of uplink (or descending sub frame) number of scheduling CC and the CC that is scheduled, practical implementation situation maybe differences, detail below in conjunction with specific embodiment.
Fig. 6 is less than the sketch map of the CC that is scheduled for scheduling CC descending sub frame among the embodiment one.CC1 uses configuration 1 for scheduling CC, and CC2 uses configuration 2 for being scheduled CC.The descending sub frame of configuration 1 is less than the descending sub frame of configuration 2.The sub-frame of uplink of CC1 is dispatched (shown in arrow 601-604) according to the timing relationship of self at corresponding descending sub frame.Do not intersect carrier dispatching for conflict subframe (subframe 3 with subframe 8); Subframe 3 at CC2 is provided with e-PDCCH with subframe 8, and the DCI (comprising up DCI and descending DCI) of the sub-frame of uplink of CC2 (subframe 2 and 7) position is by the e-PDCCH scheduling (shown in arrow 605 to 607) of CC2.
Fig. 7 is for dispatching the sketch map of CC descending sub frame more than the CC that is scheduled among the embodiment two.CC1 uses configuration 2 for scheduling CC, and CC2 uses configuration 1 for being scheduled CC.The sub-frame of uplink of CC1 is dispatched (shown in arrow 701-703) according to the timing relationship of self in the corresponding downstream subframe.For the non-conflict sub-frame of uplink (subframe 2,7) of CC2, still intersect carrier dispatching by CC1; For the sub-frame of uplink (3 and 8) of the conflict of CC2, in subframe 4 and the subframe 9 of CC2 e-PDCCH is set, use the descending PDSCH of e-PDCCH dispatching uplink subframe 3 with subframe 8 (shown in arrow 704 to 706) and this subframe of CC2.
The carrier scheduling method flow process that the embodiment of the invention one provides is as shown in Figure 8, comprises the steps:
Step 801: whether the sub-frame of uplink (descending sub frame) of judging the scheduling member carrier is more than (being less than) the member's carrier wave that is scheduled, if execution in step 802, otherwise, execution in step 806.
Step 802: whether the subframe of judging the member's carrier wave that is scheduled is consistent with the up-downgoing of the corresponding subframe of scheduling member carrier, if, execution in step 805, otherwise, execution in step 803.
Step 805: the scheduling member carrier intersects carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled.
Step 803: in the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set.
Step 804: use e-PDCCH to dispatch the said subframe of the member's carrier wave that is scheduled.
Step 806: for the inconsistent subframe of up-downgoing of the member's carrier wave that the is scheduled subframe corresponding with the scheduling member carrier; According to the scheduling timing of the former subframe that is scheduled, judge whether the subframe of the member's carrier wave that is scheduled carries uplink authorization, if execution in step 807; Otherwise, execution in step 809.
Step 809: the scheduling member carrier intersects carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled.
Step 807: in the descending sub frame of the said member's of being scheduled carriers carry uplink authorization, e-PDCCH is set.
Step 808: use e-PDCCH to dispatch the said subframe of the member's carrier wave that is scheduled.
For the situation of scheduling CC descending sub frame more than the CC that is scheduled, the embodiment of the invention two has provided another kind of solution.Fig. 9 is for dispatching the sketch map of CC descending sub frame more than the CC that is scheduled among the embodiment two.CC1 uses configuration 2 for scheduling CC, and CC2 uses configuration 1 for being scheduled CC.The sub-frame of uplink of CC1 uses the descending sub frame of self to dispatch (shown in arrow 901-903).For the non-conflict sub-frame of uplink (subframe 2,7) of CC2, still intersect carrier dispatching by CC1; For the sub-frame of uplink (3 and 8) of the conflict of CC2, send on corresponding scheduling CC according to the descending sub frame (4,9) of the scheduling timing relationship of CC2 and to authorize (shown in the arrow 904-906).
The carrier scheduling method flow process that the embodiment of the invention two provides is shown in figure 10, comprises the steps:
Step 1001: whether the sub-frame of uplink (descending sub frame) of judging the scheduling member carrier is more than (being less than) the member's carrier wave that is scheduled, if execution in step 1002, otherwise, execution in step 1006.
Step 1002: whether the subframe of judging the member's carrier wave that is scheduled is consistent with the up-downgoing of the corresponding subframe of scheduling member carrier, if, execution in step 1005, otherwise, execution in step 1003.
Step 1005: the scheduling member carrier intersects carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled.
Step 1003: in the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set.
Step 1004: use e-PDCCH to dispatch the said subframe of the member's carrier wave that is scheduled.
Step 1006:, according to the scheduling of the former subframe that is scheduled regularly, intersect carrier dispatching at the descending sub frame of dispatching member carrier accordingly for the inconsistent subframe of up-downgoing of member's carrier wave that be scheduled with the corresponding subframe of scheduling member carrier.For the up-downgoing consistent subframe of member's carrier wave that be scheduled, intersect carrier dispatching by the timing of dispatching member carrier with the corresponding subframe of scheduling member carrier.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (6)
1. intersect carrier scheduling method in the different up-downgoing proportioning carrier aggregation, it is characterized in that, comprise the steps:
Whether the subframe that A judges the member's carrier wave that is scheduled is consistent with the up-downgoing of the corresponding subframe of scheduling member carrier, if, execution in step B, otherwise, execution in step C;
B, scheduling member carrier intersect carrier dispatching and process ends to the said subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the said member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled said subframe of member's carrier wave of e-PDCCH scheduling.
2. method according to claim 1 is characterized in that, this method is used for LTE-A TDD system.
3. method according to claim 1 is characterized in that, before the said steps A, further comprises:
AA, judge the scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out said steps A, otherwise, execution in step D;
D, for the up-downgoing inconsistent subframe of member's carrier wave that be scheduled with the corresponding subframe of scheduling member carrier, according to the scheduling of the former carrier wave that is scheduled regularly, whether the be scheduled subframe of member's carrier wave of judgement carries uplink authorization; If; Execution in step E, otherwise, execution in step F;
E, in the descending sub frame of the said member's of being scheduled carriers carry uplink authorization, e-PDCCH is set, uses the be scheduled said subframe of member's carrier wave of e-PDCCH scheduling;
F, scheduling member carrier intersect carrier dispatching to the said subframe of the member's carrier wave that is scheduled.
4. method according to claim 1 is characterized in that, before the said steps A, further comprises:
AB, judge the scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out said steps A, otherwise, execution in step G;
G, for the up-downgoing inconsistent subframe of member's carrier wave that be scheduled with the corresponding subframe of scheduling member carrier, according to the scheduling timing of the former carrier wave that is scheduled, intersect carrier dispatching in the corresponding subframe of scheduling carrier wave; For the up-downgoing consistent subframe of member's carrier wave that be scheduled, regularly intersect carrier dispatching by the scheduling of scheduling carrier wave with the corresponding subframe of scheduling member carrier.
5. method according to claim 1 is characterized in that, said scheduling member carrier uses the identical switching point cycle with the member's carrier wave that is scheduled.
6. method according to claim 5 is characterized in that, the said switching point cycle is 5ms or 10ms.
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