CN102244850B - Method, device and system for transmitting and detecting control signal of return link - Google Patents
Method, device and system for transmitting and detecting control signal of return link Download PDFInfo
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- CN102244850B CN102244850B CN201010175392.7A CN201010175392A CN102244850B CN 102244850 B CN102244850 B CN 102244850B CN 201010175392 A CN201010175392 A CN 201010175392A CN 102244850 B CN102244850 B CN 102244850B
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Abstract
The invention discloses a method, a device and a system for transmitting and detecting a control signal of a return link for realizing correct detection on the relay link-physical downlink shared channel (R-PDSCH) data position. The detecting method comprises the following steps: a relay node determines whether R-PDSCH data is transmitted in the current uplink resource schedule signaling carrying area, if so, the R-PDSCH data is detected in the current uplink resource schedule signaling carrying area; and otherwise, uplink resource schedule signaling is detected in the current uplink resource schedule signaling area.
Description
Technical field
Design of communications technical field of the present invention, refers to a kind of transmission, detection method and device and system of back haul link control signal especially.
Background technology
Fig. 1 is the network configuration of advanced long evolving system (LTE-A).In LTE-A system, base station (eNB) links core net (CN) by wireline interface; Via node (RN) is linked eNB by wave point; Subscriber equipment (UE) is linked RN or eNB by wave point.Wherein, via node is back haul link to the link between eNB, comprises up back haul link and descending back haul link.RN is access link to the link between UE, comprises uplink access link and descending access link.
In back haul link, there are two kinds of channels, send control channel (R-PDCCH) and the shared data channel (R-PDSCH) of information to via node.
Inventor draws under study for action, and two kinds of situations may appear in the multiplex mode of these two kinds of channels, specifically see shown in Fig. 2 and Fig. 3.Fig. 2 is the schematic diagram that adopts TDM+FDM multiplex mode to send.Fig. 3 is the schematic diagram that adopts FDM multiplex mode to send.What TDM+FDM multiplex mode was mainly paid close attention to is the problem of control signal restitution delay, and what FDM multiplex mode was paid close attention to is the flexibility of the simple and multiplex mode of pilot frequency configuration.
The main half-way house that uses at present, this scheme basic principle is as follows:
1) scheduling downlink resource signaling (DL grant) is configured in first time slot, ensures that the time delay of this signal demodulation is short, ensures the timely demodulation of corresponding downlink data information out;
2) ascending resource scheduling signaling (UL grant) can be configured in corresponding PRB in second interior time slot.Fig. 4 is that the one of DL grant and UL grant may multiplex mode schematic diagram.
Distribute type 0 and Class1 to divide timing when downlink resource distributes with resource, its resource is to distribute to terminal according to the form of Resource Block group (RBG).Be that multiple Resource Block (RB) are one group, distribute to terminal with the form of organizing.Equally, for relaying, base station also can utilize the form of RBG to send descending R-PDCCH and R-PDSCH to relaying.
When base station has distributed a RBG to relaying with the form of RBG, and first RB in this RBG has sent the information of DL grant.As shown in Figure 5, wherein this RBG has comprised 4 RB.Semi-static this relaying of notifying in base station, first RB in this RBG is that DL grant transmission is used, DL grant place PRB pair may transmit UL grant in second time slot, also may not transmit UL grant.And the dynamic or semi-static instruction by DL grant of the resource location of the R-PDSCH of this relaying.But because the resource location of R-PDSCH also distributes based on RBG, in DL grant, also only indicate in this RBG and have R-PDSCH, its effective coverage is actually the region except DL grant and UL grant.
Like this, if in UL grant region base-station transmission UL grant, and in the time that relaying detects UL grant, if detection mistake, relaying just thinks that base station does not send UL grant to self, and therefore, the regional extent of the R-PDSCH that relaying detects just will comprise the resource area of UL grant.Will cause like this mistake of R-PDSCH resource location, so directly cause the mistake of R-PDSCH decoding, and retransmitted.
Figure 5 shows that DL grant and UL grant are configured in to the schematic diagram in certain RBG.The situation of Fig. 5 is that the R-PDCCH control information in this RBG is that certain relaying is special, and this is generally the situation that uses demodulation pilot frequency (DMRS) to carry out demodulation.
When using public guide frequency (CRS) to separate timing, that in certain RBG, transmit is DL grant and the UL grant of multiple RN, in order to utilize frequency diversity gain, improves and detects performance, between these DL grant and UL grant, may carry out interlace operation.DL grant and UL grant are configured in the schematic diagram in multiple RBG by Fig. 6, as shown in Figure 6, DL grant and the ULgrant information of multiple relayings wherein in two RBG, are configured, in this case, owing to there being the UL grant of multiple RN, even if therefore certain RN can't detect the UL grant of himself, this region can not be R-PDSCH, because also may there is the UL grant of other RN.
But, also there is another possibility situation, be exactly now in second time slot the UL grant of whole RN all do not send, but sent the R-PDSCH of certain relaying.Now, the behavior of this RN is with identical before, because the RBG that R-PDSCH takies is identical with DL grant, so in fact the RBG that the R-PDSCH of DL grant instruction takies is identical with the position of instruction DL grant.But now but have the R-PDSCH of himself, so need extra information to inform that this RN carrys out its R-PDSCH of demodulation.
To sum up, in current scheme, distribute if used based on the resource of RBG, UL grant may transmit in second right time slot of PRB, also may not transmit.Current hypothesis is UL grant to be detected, just thinks UL grant; If can't detect, just think and do not have.But if UL grant has been transferred to relaying, and relaying does not correctly detect UL grant.And in this RBG, also there is R-PDSCH, so the position at UL grant place is just used as R-PDSCH by relaying and is detected, will cause like this resource location of R-PDSCH to detect wrong problem.
summary of the invention
The invention provides a kind of transmission, detection method and device and system of back haul link control signal, can realize the correct detection to R-PDSCH Data Position.
The detection method of a kind of back haul link control signal of the embodiment of the present invention, comprising:
Via node determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data;
If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying;
If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying;
The information of described configuration is the resource scheduling information of dynamic-configuration, and the method further comprises: base station, by sending signaling to via node, is notified the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB.
The transmission method of a kind of back haul link control signal of the embodiment of the present invention, comprising:
Base station, according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data;
If definite current carrying in ascending resource scheduling signaling area can be transmitted R-PDSCH data, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area;
If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area;
The information of described configuration is the resource scheduling information of dynamic-configuration, and the method further comprises: base station, by sending signaling to via node, is notified the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB.
The checkout gear of a kind of back haul link control signal of the embodiment of the present invention, comprising:
Judging unit, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining;
Detecting unit, if for determining that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, detects R-PDSCH data current carrying in ascending resource scheduling signaling area; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying;
Described judging unit, distribute type indication signaling from receiving the scheduling downlink resource signaling resource of base station transmission for basis, detect instruction ascending resource scheduling signaling area and whether send the information bit of R-PDSCH data, and dynamically determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.
The transmitting device of a kind of back haul link control signal of the embodiment of the present invention, comprising:
Judging unit, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data;
Transmission unit, if can transmit R-PDSCH data for definite current carrying in ascending resource scheduling signaling area, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area;
The information of described configuration is the resource scheduling information of dynamic-configuration, and this device further comprises:
Notification unit, for by sending signaling to via node, notifies the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this Physical Resource Block PRB.
The transmission system of a kind of back haul link control signal of the embodiment of the present invention, comprising:
Base station, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data; If definite current carrying in ascending resource scheduling signaling area can be transmitted R-PDSCH data, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area; The information of described configuration is the resource scheduling information of dynamic-configuration, and base station, by sending signaling to via node, is notified the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB;
Relay node equipment, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining; If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying; Wherein, via node determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data, comprise: via node distributes in type indication signaling according to resource from the scheduling downlink resource signaling that receives base station transmission, detect instruction ascending resource scheduling signaling area and whether send the information bit of R-PDSCH data, and dynamically determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.
In the present embodiment, via node can determine currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data; If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying.In the present embodiment, to whether having sent R-PDSCH in UL grant region in R-PDCCH carry out clearly, can ensure like this, in the non-existent situation of UL grant, to utilize R-PDSCH to carry out transfer of data.Also can avoid because UL grant detects mistake simultaneously, and UL grant region is mistakened as to situation about detecting as R-PDSCH.
brief description of the drawings
Fig. 1 is the schematic network structure of LTE-A;
Fig. 2 is the schematic diagram that adopts TDM+FDM multiplex mode to send;
Fig. 3 is the schematic diagram that adopts FDM multiplex mode to send;
Fig. 4 is the one possibility multiplex mode schematic diagram of DL grant and UL grant;
Fig. 5 is that DL grant and UL grant are configured in the schematic diagram in certain RBG;
Fig. 6 is that DL grant and UL grant are configured in the schematic diagram in multiple RBG;
Fig. 7 is the schematic flow sheet of the detection method of a kind of back haul link control signal of the embodiment of the present invention;
Fig. 8 is the schematic flow sheet of the transmission method of a kind of back haul link control signal of the embodiment of the present invention;
Fig. 9 be the embodiment of the present invention in the situation that using CRS demodulation, the schematic diagram that the UL grant of multiple RN interweaves;
Figure 10 is that DL grant and the UL grant of the embodiment of the present invention is configured in the schematic diagram in multiple RBG;
Figure 11 be the embodiment of the present invention will in certain RBG, distribute to the schematic diagram of a RN;
Figure 12 is the checkout gear of a kind of back haul link control signal of the embodiment of the present invention;
The transmitting device of a kind of back haul link control signal of Figure 13 embodiment of the present invention.
Embodiment
It should be noted that, use RBG mode to carry out in the situation of resource instruction, have a problem that UL grant may exist.It is exactly this possibility and caused the problem of the position probing mistake of R-PDSCH resource.Because UL grant may exist, if really there is UL grant, but do not detect, just there will be R-PDSCH resource is got to wrong situation; If there is no UL grant, and detected, also can exist R-PDSCH resource to get wrong situation.
Therefore solution is removed this possibility exactly, or all the time transmits UL grant, if do not pass UL grant, does not also transmit R-PDSCH; All the time transmit R-PDSCH, UL grant is not put into this local transmission, even but UL grant is put into other place transmission, if also there is this problem in the several PRB in a RBG; Provide extra information, indicate whether to exist UL grant.
Find out thus, which RBG no matter UL grant be put in transmits, and all exists and may send the situation that also may not send, so a more unified method is special by UL grant by this resource exactly, discord R-PDSCH shares.If done like this, in second time slot, be all special to UL grant by PRB shared DL grant.Certainly, or be exactly extra instruction.
Therefore, in general, for relaying, it carries out the detection of UL grant according to certain regulation or instruction, and, by certain mode, relaying can be specified this position and whether be had UL grant's.Only in this way, can ensure the correctness of R-PDSCH resource location.
In order to realize the correct detection to R-PDCCH data, in the embodiment of the present invention, via node determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data; If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying.
Shown in Figure 7, the detection method of a kind of back haul link control signal of the embodiment of the present invention comprises the following steps:
Step 701: via node determines currently carry in ascending resource scheduling signaling area whether transmit R-PDSCH data, if so, execution step 702, otherwise, execution step 703.
Via node can determine currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data according to variety of way.
Such as: can be according to the static configuration information obtaining in advance, determine currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data.
For another example, can be according to dynamically determining currently carry whether transmit R-PDSCH data in ascending resource scheduling signaling area from receiving signaling that base station sends.
As a kind of execution mode, if the signaling that described base station sends is scheduling downlink resource signaling, via node resource from scheduling downlink resource signaling is distributed the information bit that detects instruction ascending resource scheduling signaling area in type indication signaling and whether send R-PDSCH data, and determines currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.The information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data can distribute one or several bit in type indication bit for described resource, or is one or several added bits position.
Taking in current LTE-A system as example, concrete resource distributes type to have 3 kinds, i.e. type0,1,2.In these three kinds of resource allocation signals, all comprise a series of bit information, such as in type0, the occupation condition that may indicate 100 PRB with 25 bit, the wherein situation that takies of 4 PRB of each bit instruction.So, for the embodiment of the present invention, just can carry out following configuration:
Method 1: increase by 1 extra bit and indicate whether to have R-PDSCH in ascending resource scheduling signaling area, so like this, the length of type0 originally will increase to some extent.
Method 2: the some bit in 25 original bit are redefined, such as the lowest order of this bit series or highest order are used to refer to whether have R-PDSCH in ascending resource scheduling signaling area, so, now relaying is just clear and definite, if the lowest order of this bit series or highest order are 1, just be illustrated in ascending resource scheduling signaling area and have R-PDSCH, instead of this RN resource of having said this PRB component dispensing.If the lowest order of this bit series or highest order are 0, are just illustrated in ascending resource scheduling signaling area and do not have R-PDSCH.
Step 702: detect R-PDSCH data current carrying in ascending resource scheduling signaling area, jump out.
Step 703: detect ascending resource scheduling signaling in ascending resource scheduling signaling area current carrying.
Adopting under CRS demodulation case, in ascending resource scheduling signaling area, do not transmit R-PDSCH data if determine current carrying,, described current carrying in ascending resource scheduling signaling area, transmission ascending resource scheduling signaling, can certainly not transmit ascending resource scheduling signaling.
Shown in Figure 8, the transmission method of a kind of back haul link control signal of the embodiment of the present invention comprises the following steps:
Step 801: base station, according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data, if so, performs step 802, otherwise, execution step 803.
The information of described configuration can, for the resource scheduling information setting in advance, can be also the resource scheduling information of dynamic-configuration.
In other words, base station can be according to the resource scheduling information of the resource scheduling information of static configuration or dynamic-configuration, determines currently to carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data.
And, while adopting the resource scheduling information of static configuration, if determine that current carrying in ascending resource scheduling signaling area can not transmit R-PDSCH data, in ascending resource scheduling signaling area, do not transmit all the time R-PDSCH data described carrying.
If adopt the resource scheduling information of dynamic-configuration, base station can, further by sending signaling to via node, be notified the resource scheduling information of described dynamic-configuration to corresponding via node.
Such as: when the signaling sending when described base station is scheduling downlink resource signaling, wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB.The information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
Step 802: can transmit the R-PDSCH data that need transmission in bearing downlink scheduling of resource signaling area current.
Step 803: in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area.
In step 803, base station can be in the current ascending resource scheduling signaling for one or more via node of carrying transmission needs transmission in ascending resource scheduling signaling area.
Below lift specific embodiment and describe technical scheme of the present invention in detail.
In the embodiment of the present invention, need to consider that demodulation pilot frequency is CRS or two kinds of situations of DMRS.
CRS demodulation:
Shown in Figure 9, when using in the situation of CRS demodulation, the UL grant of multiple RN interweaves together.Now there are several situations, such as there being two RN, be RN1 and RN2, for RN1 and RN2, a kind of situation is the UL grant that RN2 has only been transmitted in UL grant region, although now there is not the UL grant of RN1 in this region, but the RBG of the R-PDSCH of RN1 instruction is identical with the RBG of UL grant, therefore now need clearly to indicate to RN1, there is ULgrant in this RBG region, although be not the UL grant of RN1.Also give the clear and definite instruction of RN2 simultaneously, in this RBG, have its UL grant.Under CRS demodulation case, and UL grant region memory is in the case of the UL grant of any one RN, need to send identical instruction to the RN that all may receive, notify RN is current carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data, if notify current carrying in ascending resource scheduling signaling area not transmit R-PDSCH data, may have ULgrant.Receiving current carrying do not transmit the instruction of R-PDSCH data in ascending resource scheduling signaling area in the situation that, RN need to carry out UL grant detection, but UL grant may be detected, also UL grant, the situation that this can not cause R-PDSCH resource area to be made mistakes may do not detected.
The second situation is, do not send the UL grant of any RN in UL grant region, and now this UL grant region send R-PDSCH can to certain RN.Now need whole RN of informing base station subordinate, instruction UL grant region memory is in the R-PDSCH data for this RN, and the RN that R-PDSCH resource is assigned to this UL grant region so just can carry out the detection of the R-PDSCH resource of himself
Figure 10 is that DL grant and UL grant are configured in the schematic diagram in multiple RBG.As shown in figure 10, whole RN receives instruction, determines that current UL grant region memory, in the R-PDSCH data for this RN, does not exist UL grant, therefore relaying 1 can, according to the resource instruction of its DL grant, detect its R-PDSCH in UL grant region.Same operation is also applicable to relaying 2.
The in the situation that of DMRS demodulation, because certain PRB is to special for certain RN, so problem can be relatively simple.Shown in Figure 11, now, in certain RBG, distribute to RN1 special, there is not the resource of other RN.Like this, just can simply indicate RN1, whether have R-PDSCH.If there is R-PDSCH, just in the region of this UL grant, detect R-PDSCH; Otherwise, just in the region of this UL grant, do not detect R-PDSCH.
, no matter be CRS demodulation, or in the situation of DMRS demodulation, all need to indicate RN according to CRS demodulation or two kinds of situation analysis of the demodulation of DMRS by above, whether the region of UL grant there is R-PDSCH.Certainly, the implication of particular content is different.The in the situation that of CRS demodulation, there is R-PDSCH in the region of UL grant, there is no UL grant, and the meaning is that the UL grant of whole RN does not exist in second time slot; If instruction UL grant region does not exist R-PDSCH, there is UL grant in UL grant region, is shown to be the UL grant of the several RN of existence certain or certain, may not be the UL grant that certainly receives the RN of notice.
The in the situation that of DMRS demodulation, if instruction UL grant region, base station exists R-PDSCH, there is no UL grant, there is no exactly the UL grant of current RN; If there is not R-PDSCH in instruction UL grant region, base station, there is UL grant, be exactly the UL grant of current RN.
In addition, RN determines that whether having sent R-PDSCH in UL grant region has two kinds of modes, and a kind of is static, carrys out static determining according to certain condition, does not need the instruction of dynamic signaling; One is dynamic, dynamically informs RN by base station by signaling.
If static configuration also exists various ways, the simplest one is that, if the situation transmission based on RBG, UL grant is just only transmitted all the time in UL grant region so, even without ULgrant, does not also transmit R-PDSCH.This is a kind of scheme of static state, has the larger wasting of resources in this scheme, because in the situation that UL grant does not transmit, this region is all also blank.
If the method for dynamic-configuration is more directly the method for utilizing DL grant to indicate.Add a bit, notify each RN, whether UL grant region has sent R-PDSCH.
Basic solution: add the information of a bit in DL grant, indicate in its PRB below whether sent R-PDSCH.This UL grant information can be this RN, can be also other RN.
In DMRS situation: the information of adding 1bit in DL grant is indicated the R-PDSCH that whether has sent this RN in the PRB after it.
RN side detects: if instruction does not exist R-PDSCH, the detection of this R-PDSCH will be removed the shared region of this UL grant; If instruction exists R-PDSCH, the detection of R-PDSCH just comprises this UL grant region.
In CRS situation: the information of adding 1bit in DL grant indicates in the PRB after it whether have R-PDSCH, be now possible have situation about interweaving, even because the UL grant of other RN exists, also need instruction.Detect for RN, if there is R-PDSCH, carry out the detection of R-PDSCH.If there is no R-PDSCH, detects UL grant.
Certainly,, if the instruction R-PDSCH information in dynamic-configuration is not sent all the time, be just equivalent to static configuration for sending all the time UL grant, and this region does not send any R-PDSCH.
It is exactly in the information bit of current type0 that dynamic-configuration also has a kind of method, and original information bit content is changed.Because from the angle of eNB, that that can specify current service is relaying or UE, if in the situation of relaying, and use type0 to notify for unit according to RBG, by lowest order, or the RBG of highest order vacates and do not dispatch to changing relaying, and the bit information that changes RBG position is used to refer to the R-PDSCH information that whether exists.The benefit of this method is smaller to changing in current standard, and only regulation is that a high position or the low level of type0 information bit is used for carrying out special processing.
In sum, in static configuration situation, do not transmit R-PDSCH in eNB side in UL grant region, can only in UL grant region, send UL grant.At trunk side, in UL grant region, detect ULgrant, if UL grant detected, carry out existing operation; Otherwise, also in this region, do not detect R-PDSCH.
In dynamic-configuration situation,, there is UL grant if definite in eNB side, notifies RN not have R-PDSCH in UL grant region.Otherwise, notify RN at UL grant region memory at R-PDSCH.If at R-PDSCH, utilize this region to send R-PDSCH at UL grant region memory.Trunk side receives the notice signaling of eNB, if determine in UL grant region and do not have R-PDSCH according to notice, in this region, detects UL grant; If determine in UL grant region and have R-PDSCH according to notice, just in UL grant region, detect R-PDSCH.
Shown in Figure 12, the checkout gear of a kind of back haul link control signal of the embodiment of the present invention, comprising: judging unit 121 and detecting unit 122.Wherein,
Judging unit 121, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining;
Detecting unit 122, if for determining that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, detects R-PDSCH data current carrying in ascending resource scheduling signaling area; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying.
Described judging unit 121, for according to the static configuration information obtaining in advance, determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data.
Described judging unit 121, for according to dynamically determining currently carry whether transmit R-PDSCH data in ascending resource scheduling signaling area from receiving signaling that base station sends.
Described detecting unit 122, for adopting under CRS demodulation case, if determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, transmit ascending resource scheduling signaling or do not transmitted ascending resource scheduling signaling described current carrying.
Described judging unit, for distribute the information bit that detects instruction ascending resource scheduling signaling area type indication signaling and whether send R-PDSCH data from scheduling downlink resource signaling resource, and determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.The information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
Shown in Figure 13, the transmitting device of a kind of back haul link control signal of the embodiment of the present invention, comprising: judging unit 131 and transmission unit 132.
Judging unit 131, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data;
Transmission unit 132, if can transmit R-PDSCH data for definite current carrying in ascending resource scheduling signaling area, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area.
The information of described configuration is the resource scheduling information setting in advance.Described transmission unit, if can not transmit R-PDSCH data definite current carrying in ascending resource scheduling signaling area, does not transmit R-PDSCH data all the time described carrying in ascending resource scheduling signaling area.
The information of described configuration is the resource scheduling information of dynamic-configuration, and this device further comprises: notification unit, for by sending signaling to via node, the resource scheduling information of described dynamic-configuration is notified to corresponding via node.
The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB.The information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
Described transmission unit 132, can be for determining current carrying can not transmit R-PDSCH data in ascending resource scheduling signaling area time, carry transmission in ascending resource scheduling signaling area and need the ascending resource scheduling signaling for one or more via node sending current.
The embodiment of the present invention also provides a kind of transmission system of back haul link control signal, and this system comprises: base station and via node.
Base station, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data; If definite current carrying in ascending resource scheduling signaling area can be transmitted R-PDSCH data, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area;
Relay node equipment, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining; If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying.
Certainly, the system of the embodiment of the present invention can also and embodiment illustrated in fig. 8ly be carried out mutual process according to Fig. 7, repeats no more here.
The scheme of the present embodiment to whether having sent R-PDSCH in UL grant region in R-PDCCH has been carried out clearly, can ensure like this, in the non-existent situation of UL grant, to utilize R-PDSCH to carry out transfer of data.Also can avoid because UL grant detects mistake simultaneously, and UL grant region is mistakened as to situation about detecting as R-PDSCH.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (13)
1. a detection method for back haul link control signal, is characterized in that, the method comprises the following steps:
Via node determines whether current carrying in ascending resource scheduling signaling area transmits to the Physical Downlink Shared Channel R-PDSCH data of via node transmission information;
If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying;
If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying;
Wherein, via node determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data, comprise: via node distributes in type indication signaling according to resource from the scheduling downlink resource signaling that receives base station transmission, detect instruction ascending resource scheduling signaling area and whether send the information bit of R-PDSCH data, and dynamically determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.
2. method according to claim 1, is characterized in that, adopting under public guide frequency CRS demodulation case, if determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area,
In ascending resource scheduling signaling area, transmit ascending resource scheduling signaling or do not transmitted ascending resource scheduling signaling described current carrying.
3. method according to claim 1, it is characterized in that, the information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
4. a transmission method for back haul link control signal, is characterized in that, the method comprises the following steps:
Base station, according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data;
If definite current carrying in ascending resource scheduling signaling area can be transmitted R-PDSCH data, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area;
If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area;
The information of described configuration is the resource scheduling information of dynamic-configuration, and the method further comprises: base station, by sending signaling to via node, is notified the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB.
5. method according to claim 4, it is characterized in that, the information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
6. method according to claim 4, it is characterized in that, if definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in the current ascending resource scheduling signaling for one or more via node of carrying transmission needs transmission in ascending resource scheduling signaling area.
7. a checkout gear for back haul link control signal, is characterized in that, this device comprises:
Judging unit, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining;
Detecting unit, if for determining that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, detects R-PDSCH data current carrying in ascending resource scheduling signaling area; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying;
Described judging unit, distribute type indication signaling from receiving the scheduling downlink resource signaling resource of base station transmission for basis, detect instruction ascending resource scheduling signaling area and whether send the information bit of R-PDSCH data, and dynamically determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.
8. device according to claim 7, it is characterized in that, described detecting unit, for adopting under CRS demodulation case, if determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, transmit ascending resource scheduling signaling or do not transmitted ascending resource scheduling signaling described current carrying.
9. device according to claim 7, it is characterized in that, the information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
10. a transmitting device for back haul link control signal, is characterized in that, this device comprises:
Judging unit, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data;
Transmission unit, if can transmit R-PDSCH data for definite current carrying in ascending resource scheduling signaling area, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area;
The information of described configuration is the resource scheduling information of dynamic-configuration, and this device further comprises:
Notification unit, for by sending signaling to via node, notifies the resource scheduling information of described dynamic-configuration to corresponding via node; Described signaling is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this Physical Resource Block PRB.
11. devices according to claim 10, it is characterized in that, the information bit whether described instruction ascending resource scheduling signaling area sends R-PDSCH data is that described resource is distributed one or several bit in type indication bit, or is one or several added bits position.
12. devices according to claim 10, it is characterized in that, described transmission unit, for determining current carrying can not transmit R-PDSCH data in ascending resource scheduling signaling area time, carry transmission in ascending resource scheduling signaling area and need the ascending resource scheduling signaling for one or more via node sending current.
The transmission system of 13. 1 kinds of back haul link control signals, is characterized in that, this system comprises:
Base station, for according to the information of configuration, determines currently carry in ascending resource scheduling signaling area whether can transmit R-PDSCH data; If definite current carrying in ascending resource scheduling signaling area can be transmitted R-PDSCH data, in current R-PDSCH data of carrying transmission needs transmission in ascending resource scheduling signaling area; If definite current carrying in ascending resource scheduling signaling area can not be transmitted R-PDSCH data, in current ascending resource scheduling signaling of carrying transmission needs transmission in ascending resource scheduling signaling area; The information of described configuration is the resource scheduling information of dynamic-configuration, and base station, by sending signaling to via node, is notified the resource scheduling information of described dynamic-configuration to corresponding via node; The signaling that described base station sends is scheduling downlink resource signaling, and wherein resource distributes type signaling to comprise to be used to indicate the information bit that whether has R-PDSCH data in this PRB;
Relay node equipment, currently carries in ascending resource scheduling signaling area, whether to transmit R-PDSCH data for determining; If determine that current carrying transmitted R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect R-PDSCH data current carrying; If determine that current carrying do not transmit R-PDSCH data in ascending resource scheduling signaling area, in ascending resource scheduling signaling area, detect ascending resource scheduling signaling current carrying; Wherein, via node determines currently carry in ascending resource scheduling signaling area, whether to transmit R-PDSCH data, comprise: via node distributes in type indication signaling according to resource from the scheduling downlink resource signaling that receives base station transmission, detect instruction ascending resource scheduling signaling area and whether send the information bit of R-PDSCH data, and dynamically determine currently can in bearing downlink ascending resource scheduling signaling area, whether transmit R-PDSCH data according to the content of this information bit.
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| CN201010175392.7A CN102244850B (en) | 2010-05-12 | 2010-05-12 | Method, device and system for transmitting and detecting control signal of return link |
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| CN1925360A (en) * | 2005-09-02 | 2007-03-07 | 大唐移动通信设备有限公司 | Method for distribution of terminal wireless resources in time-division duplex system |
| CN101675696A (en) * | 2007-05-02 | 2010-03-17 | 高通股份有限公司 | Flexible signaling of resources on a control channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1925360A (en) * | 2005-09-02 | 2007-03-07 | 大唐移动通信设备有限公司 | Method for distribution of terminal wireless resources in time-division duplex system |
| CN101675696A (en) * | 2007-05-02 | 2010-03-17 | 高通股份有限公司 | Flexible signaling of resources on a control channel |
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| 3GPP TSG RAN WG1 Meeting #61.FDM for R-PDCCH.《3GPP》.2010,第1，2页. * |
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