CN102448171B - 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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- CN102448171B CN102448171B CN201210021376.1A CN201210021376A CN102448171B CN 102448171 B CN102448171 B CN 102448171B CN 201210021376 A CN201210021376 A CN 201210021376A CN 102448171 B CN102448171 B CN 102448171B
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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 mobile communication technology field, particularly carrier aggregation technology, relates in particular to and in a kind of different up-downgoing proportioning carrier aggregation, intersects carrier scheduling method.
Background technology
In senior Long Term Evolution project time division duplex version 10 (LTE-A TDD Release10), introduce carrier aggregation concept to support more wide bandwidth transmission, be that two or more carrier waves are grouped together in together, to support LTE-A transmission bandwidth to be greater than the transmission of 20MHz.For the TD of the carrier aggregation of Release10, (intra-band) scene in band support, this frequency range (band) is the spendable Radio Resource frequency spectrum resource that International Telecommunication Union determines, if produce serious interference while adopting different up-downgoing proportionings can make up and descending transmitting-receiving, therefore 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 represents that this subframe is descending sub frame; letter U represents that this subframe is sub-frame of uplink; letter S represents 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 in prior art in a kind of typical Release10 the up-downgoing proportioning of each member carrier under carrier aggregation scene, wherein member carrier 1 (CC1) to member carrier 5 (CC5) all adopt shown in table 1 up-up-downgoing proportioning corresponding to downstream arrangements mark 1 (being designated hereinafter simply as configuration 1).
In Release10, in order to reduce the interference of isomery scene to control channel, introduce intersection carrier dispatching concept, the i.e. control information of a carrier wave can, by other carriers carry, distinguish by the carrier wave instruction territory (CIF) that adds 3bit at Downlink Control Information (DCI) above the carrier wave being scheduled.Be illustrated in figure 2 the schematic diagram 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, distinguishes the Physical Downlink Shared Channel (PDSCH) of corresponding CC0-CC2 by the different values of CIF.
In Release11, will introduce (inter-band) carrier aggregation between frequency range, to reach the utilization of resources more flexibly.In the time that different frequency range uses different up-downgoing proportionings, may there is the scene that sub-frame of uplink conflicts with descending sub frame, as Fig. 3 a to Fig. 3 c is depicted as carrier aggregation different frequency range between frequency range and uses the schematic diagram of different up-downgoing proportionings.Wherein the CC1 of Fig. 3 a uses the configuration 1 shown in table 1, and CC2 uses the configuration 2 shown in table 1, has occurred respectively in subframe 3 and subframe 8 situation (subframe shown in ellipse) that ascending-descending subframes conflicts.The CC1 of Fig. 3 b uses configuration 3, CC2 to use configuration 4, occurs ascending-descending subframes conflict in subframe 4.The CC1 of Fig. 3 c uses configuration 2, CC2 to use configuration 4, all occurs the situation of ascending-descending subframes conflict in subframe 3, subframe 6 and subframe 7.
This situation can affect intersection carrier dispatching, therefore need to revise to adapt to new scene for the intersection carrier dispatching of Rel-10 definition.In Rel-10, also define the concept of community (Cell), the up CC that each Cell comprises a descending CC and is connected.
Enhancement mode Physical Downlink Control Channel is being discussed at present in Rel-11, i.e. e-PDCCH, transmits PDCCH to reach the object that strengthens control channel capacity by some region in PDSCH.Be illustrated in figure 4 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.In the situation that TDD different frequency range difference configures up and down, have four kinds of situations shown in Fig. 5.As Fig. 5 (a) (c) as shown in, if relation scheduling subframe corresponding to subframe that be scheduled is descending sub frame chronologically, no problem, can be according to the intersection carrier dispatching of Rel-10 definition.As Fig. 5 (b) (d) as shown in, if relation scheduling subframe corresponding to subframe that be scheduled is sub-frame of uplink chronologically, because scheduling subframe is sub-frame of uplink, cannot send mandate, therefore can not dispatch.
Summary of the invention
The invention provides and in a kind of different up-downgoing proportioning carrier aggregation, intersect carrier scheduling method, can realize the carrier dispatching that TDD different frequency range difference configures up and down.
In the different up-downgoing proportioning of one that the embodiment of the present invention provides carrier aggregation, intersect carrier scheduling method, comprise the steps:
A judges that whether corresponding with scheduling member carrier the up-downgoing of the subframe of the member's carrier wave that is scheduled subframe be consistent, if so, performs step B, otherwise, execution step C;
B, scheduling member carrier intersect carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled described subframe of member's carrier wave of e-PDCCH scheduling.
Preferably, the method is for LTE-A TDD system.
Preferably, before described steps A, further comprise:
AA, judge scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out described steps A, otherwise, execution step D;
D, for the up-downgoing inconsistent subframe of member's carrier wave with subframe corresponding to scheduling member carrier that be scheduled, according to the scheduling timing of the former carrier wave that is scheduled, whether the be scheduled subframe of member's carrier wave of judgement carries uplink authorization, if, execution step E, otherwise, execution step F;
E, in the descending sub frame of the described member's of being scheduled carriers carry uplink authorization, e-PDCCH is set, uses the be scheduled described subframe of member's carrier wave of e-PDCCH scheduling;
F, scheduling member carrier intersect carrier dispatching to the described subframe of the member's carrier wave that is scheduled.
Preferably, before described steps A, further comprise:
AB, judge scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if carry out described steps A, otherwise, execution step G;
G, for the up-downgoing inconsistent subframe of member's carrier wave with subframe corresponding to scheduling member carrier that be scheduled, 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 member's carrier wave subframe consistent with the up-downgoing of subframe corresponding to scheduling member carrier that be scheduled, intersect carrier dispatching by the scheduling timing of scheduling carrier wave.
Preferably, described scheduling member carrier and the member's carrier wave that is scheduled use the identical switching point cycle.
Preferably, the described switching point cycle is 5ms or 10ms.
As can be seen from the above technical solutions, when the up-downgoing of the subframe corresponding with scheduling member carrier when the subframe of the member's carrier wave that is scheduled is inconsistent, in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set, use the e-PDCCH scheduling described subframe of member's carrier wave that is scheduled, in different up-downgoing proportioning carrier aggregation, intersect carrier dispatching and cannot send the problem of mandate thereby solved.
Brief description of the drawings
Fig. 1 is the up-downgoing proportioning schematic diagram of each member carrier under carrier aggregation scene in a kind of typical Release10 in prior art;
Fig. 2 is the schematic diagram of intersection carrier dispatching;
Fig. 3 a to Fig. 3 c is the schematic diagram that between frequency range, carrier aggregation different frequency range uses different up-downgoing proportionings;
Fig. 4 is the configuration schematic diagram of PDCCH and e-PDCCH;
Fig. 5 is the schematic diagram of four kinds of situations configuring up and down in TDD different frequency range difference;
Fig. 6 is the schematic diagram that the scheduling CC descending sub frame of the embodiment of the present invention one is less than the CC that is scheduled;
Fig. 7 is that the scheduling CC descending sub frame of the embodiment of the present invention one is more than the schematic diagram of the CC that is scheduled;
The carrier scheduling method schematic flow sheet that Fig. 8 provides for the embodiment of the present invention one;
Fig. 9 is that the scheduling CC descending sub frame of the embodiment of the present invention two is more than the schematic diagram of the CC that is scheduled;
The carrier scheduling method schematic flow sheet that Figure 10 provides for the embodiment of the present invention two.
Embodiment
In the different up-downgoing proportioning of the one carrier aggregation that the present invention proposes, intersect carrier scheduling method, comprise following basic step:
A judges that whether corresponding with scheduling member carrier the up-downgoing of the subframe of the member's carrier wave that is scheduled subframe be consistent, if so, performs step B, otherwise, execution step C;
B, scheduling member carrier intersect carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled described subframe of member's carrier wave of e-PDCCH scheduling.
The present invention is applicable to 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 specification, therefore the present invention will use the hypothesis in identical switching point cycle based on polymerization carrier wave.Suppose that different CC only configure the combination of the subframe proportioning of 5ms or 10ms.The CC of carrying scheduling authorization is called to scheduling CC, the CC that scheduling authorization transmits on other CC is called the CC that is scheduled simultaneously.According to the difference of sub-frame of uplink (or descending sub frame) number of scheduling CC and the CC that is scheduled, concrete performance may be different, describe in detail below in conjunction with specific embodiment.
Fig. 6 dispatches the schematic diagram that CC descending sub frame is less than the CC that is scheduled in embodiment mono-.CC1 is scheduling CC, uses configuration 1, CC2 for being scheduled CC, uses configuration 2.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 (as shown in arrow 601-604) at corresponding descending sub frame according to the timing relationship of self.Do not intersect carrier dispatching for conflict subframe (subframe 3 and subframe 8), subframe 3 and subframe 8 at CC2 arrange e-PDCCH, 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 (as shown in arrow 605 to 607) of CC2.
Fig. 7 dispatches the schematic diagram of CC descending sub frame more than the CC that is scheduled in embodiment bis-.CC1 is scheduling CC, uses configuration 2, CC2 for being scheduled CC, uses configuration 1.The sub-frame of uplink of CC1 is dispatched (as shown in arrow 701-703) according to the timing relationship of self at corresponding descending sub frame.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 e-PDCCH dispatching uplink subframe 3 of CC2 and the descending PDSCH of subframe 8 (as shown in arrow 704 to 706) and this subframe.
The carrier scheduling method flow process that the embodiment of the present invention one provides as shown in Figure 8, comprises the steps:
Step 801: whether the sub-frame of uplink (descending sub frame) that judges scheduling member carrier is more than (being less than) the member's carrier wave that is scheduled, if execution step 802, otherwise, execution step 806.
Step 802: judgement is scheduled, and the up-downgoing of the subframe corresponding with scheduling member carrier is consistent for the subframe of member's carrier wave, if so, performs step 805, otherwise, execution step 803.
Step 805: scheduling member carrier intersects carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled.
Step 803: in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set.
Step 804: use e-PDCCH to dispatch the described subframe of the member's carrier wave that is scheduled.
Step 806: for the inconsistent subframe of up-downgoing of member's carrier wave subframe corresponding with scheduling member carrier that be scheduled, 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 step 807, otherwise, execution step 809.
Step 809: scheduling member carrier intersects carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled.
Step 807: in the descending sub frame of the described member's of being scheduled carriers carry uplink authorization, e-PDCCH is set.
Step 808: use e-PDCCH to dispatch the described subframe of the member's carrier wave that is scheduled.
Situation for scheduling CC descending sub frame more than the CC that is scheduled, the embodiment of the present invention two has provided another kind of solution.Fig. 9 dispatches the schematic diagram of CC descending sub frame more than the CC that is scheduled in embodiment bis-.CC1 is scheduling CC, uses configuration 2, CC2 for being scheduled CC, uses configuration 1.The sub-frame of uplink of CC1 uses the descending sub frame of self to dispatch (as 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 and authorize (shown in arrow 904-906) on corresponding scheduling CC according to the descending sub frame of the scheduling timing relation of CC2 (4,9).
The carrier scheduling method flow process that the embodiment of the present invention two provides as shown in figure 10, comprises the steps:
Step 1001: whether the sub-frame of uplink (descending sub frame) that judges scheduling member carrier is more than (being less than) the member's carrier wave that is scheduled, if execution step 1002, otherwise, execution step 1006.
Step 1002: judgement is scheduled, and the up-downgoing of the subframe corresponding with scheduling member carrier is consistent for the subframe of member's carrier wave, if so, performs step 1005, otherwise, execution step 1003.
Step 1005: scheduling member carrier intersects carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled.
Step 1003: in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set.
Step 1004: use e-PDCCH to dispatch the described subframe of the member's carrier wave that is scheduled.
Step 1006: for the up-downgoing inconsistent subframe of member's carrier wave with subframe corresponding to scheduling member carrier that be scheduled, according to the scheduling timing of the former subframe that is scheduled, intersect carrier dispatching at the descending sub frame of corresponding scheduling member carrier.For member's carrier wave subframe consistent with the up-downgoing of subframe corresponding to scheduling member carrier that be scheduled, intersect carrier dispatching by the timing of scheduling member carrier.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (4)
1. in different up-downgoing proportioning carrier aggregation, intersect a carrier scheduling method, it is characterized in that, comprise the steps:
AA, judge scheduling member carrier sub-frame of uplink whether more than the member's carrier wave that is scheduled, if execution step A, otherwise, execution step D to step F, or execution step G;
A judges that whether corresponding with scheduling member carrier the up-downgoing of the subframe of the member's carrier wave that is scheduled subframe be consistent, if so, performs step B, otherwise, execution step C;
B, scheduling member carrier intersect carrier dispatching process ends to the described subframe of the member's carrier wave that is scheduled;
C, in the descending sub frame of the described member's of being scheduled carrier wave, e-PDCCH is set, uses the be scheduled described subframe of member's carrier wave of e-PDCCH scheduling;
D, for the up-downgoing inconsistent subframe of member's carrier wave with subframe corresponding to scheduling member carrier that be scheduled, according to the scheduling timing of the former carrier wave that is scheduled, whether the be scheduled subframe of member's carrier wave of judgement carries uplink authorization, if, execution step E, otherwise, execution step F;
E, in the descending sub frame of the described member's of being scheduled carriers carry uplink authorization, e-PDCCH is set, uses the be scheduled described subframe of member's carrier wave of e-PDCCH scheduling;
F, scheduling member carrier intersect carrier dispatching to the described subframe of the member's carrier wave that is scheduled;
G, for the up-downgoing inconsistent subframe of member's carrier wave with subframe corresponding to scheduling member carrier that be scheduled, 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 member's carrier wave subframe consistent with the up-downgoing of subframe corresponding to scheduling member carrier that be scheduled, intersect carrier dispatching by the scheduling timing of scheduling carrier wave.
2. method according to claim 1, is characterized in that, the method is for LTE-A TDD system.
3. method according to claim 1, is characterized in that, described scheduling member carrier and the member's carrier wave that is scheduled use the identical switching point cycle.
4. method according to claim 3, is characterized in that, the described switching point cycle is 5ms or 10ms.
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| CN103391157B (en) * | 2012-05-11 | 2018-03-23 | 中兴通讯股份有限公司 | A kind of method, terminal and network equipment for carrying out carrier aggregation |
| US9295048B2 (en) * | 2012-09-24 | 2016-03-22 | Qualcomm Incorporated | Method and apparatus for supporting hybrid carrier aggregation |
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