CN103037401A - Aggregation and detection method of control channel, transmitter and user device - Google Patents
Aggregation and detection method of control channel, transmitter and user device Download PDFInfo
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Abstract
An embodiment of the invention provides an aggregation and detection method of a control channel, a transmitter and a user device. The aggregation method of the control channels includes: the transmitter aggregates at least one first control channel logical unit and/or at least one second control channel logical unit to form the control channel; the loaded control channel resource quantity of the first control channel logical unit is smaller than that of the second control channel logical unit; and the transmitter transmits the control channel loading signals to a receiver. According to the aggregation and detection method of the control channel, the transmitter and the user device, the control channel is formed by aggregating integral number of control channel logical units, accordingly the existing mapping and resource allocation mode can be kept, and achievement complexity is reduced.
Description
Technical field
The embodiment of the invention relates to wireless communication field, and more specifically, relates to polymerization and detection method, transmitter and the subscriber equipment of control channel.
Background technology
LTE (Long Term Evolution, Long Term Evolution) the Rel-8/9/10 communication system has adopted the technology of dynamic dispatching to improve the performance of system, be eNB (evolved NodeB, evolved base station) according to each subscriber equipment (UE, User Equipment) channel conditions is dispatched and Resources allocation, so that each subscriber equipment that is dispatched to is in its optimum channel.In downlink transfer, eNB will send a PDSCH (Physical Downlink Shared Channel for each subscriber equipment that is dispatched to according to the result of dynamic dispatching, Physical Downlink Shared Channel) and corresponding PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), wherein PDSCH is carrying the data that eNB sends to scheduling user's set, PDCCH mainly is the transformat that is used to refer to its corresponding PDSCH, comprise the distribution of resource, the transmission block size, modulation coding mode, transmission rank and pre-coding matrix information etc., i.e. schedule information.
PDCCH and PDSCH time division multiplexing are in a subframe.Be without loss of generality, here take general Cyclic Prefix as example.Each subframe (1ms) comprises two time slots, 7 OFDM (Orthogonal Frequency Division Multiplexing is arranged in each time slot, OFDM) symbol, NRB * 12 RE (Resource Element is arranged in each OFDM symbol, Resource Unit), NRB is the corresponding RB of system bandwidth (Resource Block, Resource Block) number.RB is comprised of 12 continuous subcarriers on the frequency domain and 7 continuous OFDM symbols on the time domain.PDCCH transmits in front 1-3 OFDM symbol of first time slot, the number of selected OFDM symbol is dynamically changeable, by PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel) indication, remaining OFDM symbol is used for passing PDSCH.In the PDCCH zone, except above-mentioned being used for the PDCCH of descending scheduling, also comprise the PDCCH for uplink scheduling, be used for ascending HARQ (Hybrid Automatic Repeat Request, the mixed automatic retransfer request) ACK/NACK channel PHICH (the Physical HARQ Indicator Channel of transmission, and the PCFICH of indication PDCCH zone OFDM symbol numbers physical hybrid automatic repeat request indicator channel).
In a subframe, be used for being numbered 0,1 among descending and the individual CCE of the multiplexing N in the PDCCH zone of all PDCCH uplink scheduling (N＞1) (Control Channel Element, control channel unit) ..., N-1.Each PDCCH is by l (l=1,2,4,8) individual continuous CCE is polymerized, namely have 4 CCE polymerization ranks, each CCE is comprised of 36 RE, and wherein the CCE number of each PDCCH polymerization is determined by the channel of information block size and PDCCH institute relative user equipment among the PDCCH.Then, the CCE of the N after multiplexing is interweaved, the CCE after interweaving is mapped in the upper and transmission of the RE that reserves in the PDCCH zone in order.
Because the RE number in PDCCH zone is subject to the OFDM symbolic number for PDCCH, therefore the PDCCH number that can support of subframe also is limited, and namely the number of scheduling user's set is limited.Need to be used for PCFICH if further consider a part of RE in the PDCCH zone, the PDCCH of PHICH and uplink scheduling, so remaining RE will limit the PDCCH number for descending scheduling, i.e. what of descending scheduling user device quantity.
The limited problem of PDCCH capacity is more outstanding in the further evolution of LTE Rel-10 system.Because multi-user installation MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) meeting should be used for improving the spectrum efficiency of system more in evolution system, this just means that the user device quantity of scheduling has increased simultaneously, therefore just needs more PDCCH.In addition, a very important scene of considering in the evolution system is exactly heterogeneous network, one of them specific implementation is exactly to have settled a plurality of RRU (Remote Radio Unit in the coverage of a macrocell except macro base station, remote radio unit (RRU)), these RRU are connected to macro base station by optical fiber or alternate manner, and these RRU have the cell ID (ID) identical with the macrocell at its place.Because based on DMRS (Demodulation Reference Signal, demodulated reference signal) sending mode, therefore each RRU can serve separately some subscriber equipmenies, but each RRU is transparent for subscriber equipment, total like this scheduling user's set number just far more than before, equally also just increased the number of PDCCH, as shown in Figure 4.
Based on this, existing PDCCH strengthens, and namely marks off a part of resource in original PDSCH zone and transmits the PDCCH of enhancing (E-PDCCH, Enhanced Physical Downlink Control Channel).The resource of distributing to like this control channel just has very large flexibility ratio, no longer be subject to three OFDM symbols, E-PDCCH also can adopt the transmission means based on DMRS simultaneously, the efficiency of transmission of reusing to improve control channel on can the implementation space, the control channel of for example serving subscriber equipment under the different RRU can take same running time-frequency resource fully, as long as spatially can well isolate.Like this, just can improve the number of capacity or the while scheduling user's set of PDCCH.
But because the transmission of E-PDCCH is different from PDCCH, therefore need to solve the resource distribution of E-PDCCH and the problem of blind Detecting.
Summary of the invention
The embodiment of the invention provides a kind of polymerization and detection method, transmitter and subscriber equipment of control channel, and the resource that can solve control channel is distributed and mapping problems.
On the one hand, provide a kind of polymerization of control channel, having comprised: transmitter is polymerized to a control channel with at least one first control channel logical block and/or at least one the second control channel logical block; The first control channel logical block can the Bearer Control channel stock number less than the second control channel logical block can the Bearer Control channel stock number; Transmitter sends to receiver with the signal of Bearer Control channel.
On the other hand, provide a kind of detection method of control channel, having comprised: the physical resource that receives is mapped to the control channel logical block, and the control channel logical block comprises the first control channel logical block or the second control channel logical block; Detect the control channel logical block to obtain control channel according to the search volume that arranges; The search volume comprises the first search volume and the second search volume at least, candidate control channel in the first search volume is polymerized by at least one first control channel logical block, candidate control channel in the second search volume is polymerized by at least one second control channel logical block, the stock number that the first control channel logical block can the Bearer Control channel less than the second control channel logical block can the Bearer Control channel stock number.
On the other hand, provide a kind of transmitter, having comprised: polymerized unit is used at least one first control channel logical block and/or at least one the second control channel logical block are polymerized to a control channel; The first control channel logical block can the Bearer Control channel stock number less than the second control channel logical block can the Bearer Control channel stock number; Transmitting element, the signal that is used for carrying the control channel of polymerized unit institute polymerization sends to receiver.
On the other hand, provide a kind of subscriber equipment, having comprised: map unit, be used for the physical resource that receives is mapped to the control channel logical block, the control channel logical block comprises the first control channel logical block or the second control channel logical block; Detecting unit, the control channel logical block that is used for shining upon according to the search volume detection map unit that arranges is to obtain control channel; The search volume comprises the first search volume and the second search volume at least, candidate control channel in the first search volume is polymerized by at least one first control channel logical block, candidate control channel in the second search volume is polymerized by at least one second control channel logical block, the stock number that the first control channel logical block can the Bearer Control channel less than the second control channel logical block can the Bearer Control channel stock number.
The embodiment of the invention is by a polymerization integer control channel logical block formation control channel, thereby makes the distribution of resource and use more effectively, and can continue to use existing mapping and resource distribution mode, reduced the complexity that realizes.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart according to the polymerization of the control channel of the embodiment of the invention.
Fig. 2 is the schematic diagram of the logical block configuration of subframe.
Fig. 3 is PRB, VRB and N
E-PDCCHThe schematic diagram of an example of configuration.
Fig. 4 is the flow chart according to the detection method of the control channel of the embodiment of the invention.
Fig. 5 is the schematic diagram of the polymerization control channel of one embodiment of the invention.
Fig. 6 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 5.
Fig. 7 is the schematic diagram of the polymerization control channel of one embodiment of the invention.
Fig. 8 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 7.
Fig. 9 is the schematic diagram of the polymerization control channel of one embodiment of the invention.
Figure 10 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 9.
Figure 11 is the block diagram of the base station of one embodiment of the invention.
Figure 12 is the block diagram of the subscriber equipment of one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
In order to support the E-PDCCH transmission based on DMRS, require in all RB of an E-PDCCH of transmission, to transmit DMRS.Because DMRS needs 6 RE at least in a RB, the RB number that therefore should limit an E-PDCCH mapping reduces the expense of DMRS.In addition, the resource granularity in E-PDCCH zone is RB, and the resource mapping of E-PDCCH should guarantee that resource is distributed and efficient utilization of resource flexibly, and should make the E-PDCCH blind Detecting simple.
Fig. 1 is the flow chart according to the polymerization of the control channel of the embodiment of the invention.For example, the method for Fig. 1 can be carried out by the transmitter in the base station.
101, transmitter is polymerized to a control channel with at least one first control channel logical block and/or at least one the second control channel logical block.The first control channel logical block can the Bearer Control channel stock number less than the second control channel logical block can the Bearer Control channel stock number.
102, transmitter sends to receiver with the signal of Bearer Control channel.。
The embodiment of the invention is by a polymerization integer control channel logical block formation control channel, thereby makes the distribution of resource and use more effectively, and can continue to use existing mapping and resource distribution mode, reduced the complexity that realizes.
Alternatively, as an embodiment, above-mentioned control channel is E-PDCCH, comprises for the control channel of descending scheduling or the control channel of user uplink scheduling.
Alternatively, as another embodiment, the first control channel logical block is corresponding to the VRB (Virtual Resource Block, virtual resource blocks) of first time slot in the subframe, and the second control channel logical block is corresponding to the VRB of second time slot in the described subframe.
Fig. 2 is the schematic diagram of the logical block configuration of subframe.In LTE Rel-11 and follow-up system, support LTE Rel-8/9/10UE owing to need backward compatibility, therefore front 1-3 OFDM symbol of a time slot still is used in the PDCCH transmission of scheduling LTE Rel-8/9/10UE, transmits in the OFDM symbol that E-PDCCH can only be left in a subframe.The capacity that a main reason of considering the E-PDCCH appearance is PDCCH is (namely the PDCCH of 3 OFDM symbols is not enough) not, so typical scene is when if the E-PDCCH transmission is arranged, PDCCH will take 3 OFDM symbols, shown in Far Left three row of Fig. 2.But the embodiment of the invention is not limited to this, and alternatively, the initial OFDM symbol of E-PDCCH also can dispose or define by system, and for example, the transmission that can define E-PDCCH is all the time from the 4th OFDM sign-on of the first time slot.
As seen from Figure 2, VRB to first time slot (" time slot 0 " among Fig. 2) in should subframe comprises 12 * 7=84 RE, wherein diagonal line hatches partly is used for DMRS, and dot-hatched partly is used for CRS (Common Reference Signal, public reference signal).Therefore, remove the RE for PDCCH, CRS and DMRS, effective RE number that can be used at last the E-PDCCH transmission among the VRB of time slot 0 is 38.Similarly, be 70 to available RE number among the VRB of second time slot (" time slot 1 " among Fig. 2) in should subframe.
The CCE of PDCCH is comprised of 36 RE, and therefore, the number of effective RE is approximately equal to CCE among the VRB of corresponding time slot 0, and effective RE number is approximately equal to two CCE among the VRB of corresponding time slot 1.Therefore, a VRB in the time slot 0 can be corresponding with a CCE, and a VRB of time slot 1 can corresponding two CCE.
Based on these characteristics, the RE number that needs as E-PDCCH equals or when being similar to a CCE, E-PDCCH just is mapped among the VRB and its corresponding PRB of time slot 0; The RE number that needs as E-PDCCH equals or when being approximately equal to 2,4 or 8 CCE, and E-PDCCH just can be mapped in VRB and its corresponding physical resource in time slot 0 and/or 1.An example of physical resource is PRB (Physical Resource Block, Physical Resource Block), and PRB can be corresponding one by one with VRB.So just can guarantee that an E-PDCCH can be mapped among an integer VRB or the PRB, can continue to use present VRB to mapping and the resource allocation methods of PRB, not need to introduce new resource and distribute and mapping method, reduce the complexity that realizes.
For example, the supposing the system bandwidth has N PRB, is numbered respectively 0,1 ..., N-1, N are positive integer.Corresponding VRB number also is N, and is mapping relations one to one between PRB and the VRB, and namely VRBn will be mapped to PRBn, and wherein n is numbering, n=0, and 1 ..., N-1.
N among N VRB of base station configuration
E-PDCCHIndividual VRB transmits E-PDCCH, and this configuration can be that the residential quarter is specific or UE is specific.VRB is the control channel logical block of E-PDCCH, and each E-PDCCH is by one or be polymerized more than a VRB.Concrete N
E-PDCCHIndividual VRB can notify this N by the mode that the base station is distributed by resource
E-PDCCHIndividual VRB can further be numbered 0,1 ..., N
E-PDCCH-1.Fig. 3 is PRB, VRB and N
E-PDCCHThe schematic diagram of an example of configuration.As shown in Figure 3, N=12, N
E-PDCCH=6, VRB 1,3,5,7,9,11 is configured to pass E-PDCCH, and to renumber respectively be 0,1,2,3,4,5.
This configuration is applicable to two time slots (0 and 1) in the subframe, that is to say that two time slots adopt same PRB, VRB and N
E-PDCCHConfiguration, wherein a part of RE of each VRB in the time slot 0 passes PDCCH, is used for the RE number of E-PDCCH less than the VRB of time slot 1.Therefore, define the first control channel logical block corresponding to the VRB of time slot 0 and the second control channel logical block VRB corresponding to time slot 1, wherein the stock number of the first control channel logical block Bearer Control channel (for example RE number of E-PDCCH) is less than the second control channel logical block.E-PDCCH transmits by polymerization the first control channel logical block and second at least a of control channel logical block.Have two kinds of polymerization methodses at least, a kind of polymerization methods is to be polymerized to an E-PDCCH by first a control channel logical block, another kind of polymerization methods is to be polymerized to an E-PDCCH by at least one second control channel logical block such as (for example, 1,2 or 4).The control channel logical block of E-PDCCH after the polymerization is mapped in respectively on the corresponding physical resource and sends.
In addition, can also comprise another kind of polymerization methods, be polymerized to a control channel by at least two the first control channel logical blocks.Obtain the power savings that microsleep is slept if a control channel need to transmit in time slot 0, when first a control channel logical block is not enough, just can use at least two the first control channel logical blocks.
The embodiment of the invention is not limited to above-mentioned illustrational polymerization methods, can also introduce as required other polymerization methodses.For example, at least one first control channel logical block and at least one second control channel logical block can be polymerized to a control channel.
Fig. 4 is the flow chart according to the detection method of the control channel of the embodiment of the invention.The method of Fig. 4 is carried out by subscriber equipment (UE, User Equipment), is for example carried out by the receiver of UE.
401, the physical resource that receives is mapped to the control channel logical block, this control channel logical block comprises the first control channel logical block or the second control channel logical block.
For example, an example of physical resource is above-mentioned PRB, and the control channel logical block is corresponding VRB.
402, detect the control channel logical block to obtain control channel according to the search volume that arranges.
The search volume comprises the first search volume and the second search volume at least, each candidate control channel is polymerized by at least one first control channel logical block in the first search volume, and each candidate control channel is polymerized by at least one second control channel logical block in the second search volume.The first control channel logical block can the Bearer Control channel stock number less than the second control channel logical block can the Bearer Control channel stock number.
The embodiment of the invention is by a polymerization integer control channel logical block formation control channel, thereby can improve the utilization ratio of resource and continue to use existing mapping and resource distribution mode, reduced the complexity that realizes.
Alternatively, as an embodiment, above-mentioned control channel is E-PDCCH, comprises for the control channel of descending scheduling or the control channel of user uplink scheduling.
Alternatively, as another embodiment, the first control channel logical block is corresponding to the VRB of first time slot in the subframe, and the second control channel logical block is corresponding to the VRB of second time slot in the described subframe.
At receiving terminal, UE need to carry out blind Detecting to N CCE and obtain its corresponding PDCCH, each PDCCH is by l (l=1,2,4,8) individual continuous CCE is polymerized, and namely has 4 CCE polymerization ranks, each CCE is comprised of 36 RE, and wherein the CCE number of each PDCCH polymerization is determined by the channel of information block size and PDCCH institute relative user equipment among the PDCCH.In order to reduce the complexity of blind Detecting, can adopt the CCE distribution principle of binary tree structure, namely when each PDCCH is distributed CCE, require the numbering m of the initial CCE of PDCCH to satisfy m mod l=0.
According to this CCE distribution principle, candidate's PDCCH has restriction under each CCE polymerization rank.Candidate's PDCCH is fewer, needs the number of times of blind Detecting also just fewer.For example, during the polymerization rank l=8 of CCE, candidate's PDCCH only has two, namely detects CCE 0～7 and CCE 8～15.Although this CCE distribution principle can reduce the blind Detecting number of times, the blind Detecting number of times that needs under each polymerization rank still has the relation of approximate direct ratio with the number N of PDCCH zone CCE.In order further to reduce the complexity of blind Detecting, under each CCE polymerization rank, define the maximum number of the candidate PDCCH that need to carry out blind Detecting, i.e. the search volume.The search volume is divided into two kinds of the public and specific search volumes of UE, the difference of the two is that the position of the initial CCE of public search space fixes, the initial CCE of the specific search volume of UE is determined that by the subframe numbers at the sign of UE and PDCCH place wherein public the and specific search volume of UE can be overlapping.
Therefore, according to embodiments of the invention, when receiving terminal carries out blind Detecting, in order to reduce the complexity of blind Detecting, need the different search volume of definition, UE only carries out blind Detecting in the search volume of definition.With respect to the polymerization methods of E-PDCCH, also define the first control channel logical block and the second control channel logical block, wherein the RE number of the E-PDCCH of the first control channel logical block carrying is less than the second control channel logical block.Defined at least two search volumes, supposed that the first search volume comprises the candidate E-PDCCH that L1 needs detect, each candidate E-PDCCH is polymerized by first a control channel logical block; The second search volume comprises the candidate E-PDCCH that L2 needs detect, and each candidate E-PDCCH is polymerized by at least one second control channel logical block, for example is polymerized by 1,2 or 4 the second control channel logical blocks.L1 and L2 are integer.
In addition, be polymerized to a control channel if also comprise by at least two the first control channel logical blocks in the mode of base station side polymerization, then above-mentioned search volume also comprises the 3rd search volume, at least one candidate control channel in the 3rd search volume is polymerized by at least one second control channel logical block, and remaining candidate control channel is polymerized by at least two the first control channel logical blocks.
Like this, the embodiment of the invention also can be simplified the blind Detecting operation of control channel by a polymerization integer control channel logical block formation control channel.
Below in conjunction with object lesson, embodiments of the invention are described in further detail.In the following embodiments, time slot 0 and time slot 1 are respectively first time slot and second time slot of a subframe.Every delegation is corresponding to configuration shown in Figure 2, and 1-3 OFDM symbol taken fully by PDCCH before the hypothesis.In addition, the invention is not restricted to following object lesson.
Fig. 5 is the schematic diagram of the polymerization control channel of one embodiment of the invention.
As the N in system configuration
E-PDCCHTransmission is during E-PDCCH among the individual VRB, and the RE number of carried of the E-PDCCH among the VRB of time slot 0 is less than the VRB of time slot 1, and time slot 0 and 1 VRB be the first control channel logical block and the second control channel logical block of corresponding E-PDCCH respectively.E-PDCCH has 4 kinds of polymerization methodses, being respectively: (1). an E-PDCCH is polymerized by 1 the first control channel logical block, (2). an E-PDCCH is polymerized by 1 the second control channel logical block, (3). an E-PDCCH is polymerized (4) by 2 the second control channel logical blocks. and an E-PDCCH is polymerized by 4 the second control channel logical blocks.When polymerization methods was (1), E-PDCCH was mapped in time slot 0; Otherwise E-PDCCH is mapped in time slot 1.Can guarantee that like this E-PDCCH takies an integer VRB, reuse existing VRB to the mapping mode of PRB, can also continue to use the design of the CCE size of existing PDCCH.8 VRB of supposing the system configuration are numbered 0,1 ..., 7.
Fig. 6 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 5.
At receiving terminal, needing the respectively polymerization methods of 4 kinds of above-mentioned E-PDCCH of corresponding diagram 5 blind Detecting of assisting UE of 4 kinds of search volumes of definition: (1). there are 6 candidate E-PDCCH the search volume, and each candidate E-PDCCH is polymerized by 1 the first control channel logical block; (2). there are 6 candidate E-PDCCH the search volume, and each candidate E-PDCCH is polymerized by 1 the second control channel logical block; (3). there are 2 candidate E-PDCCH the search volume, and each candidate E-PDCCH is polymerized by 2 the second control channel logical blocks; (4). there are 2 candidate E-PDCCH the search volume, and each candidate E-PDCCH is polymerized by 4 the second control channel logical blocks.Take Fig. 5 as example, 8 VRB of system configuration are numbered 0,1 ..., 7, then the search volume of above-mentioned definition is as shown in Figure 6.
The embodiment of the invention is mapped in an E-PDCCH on the integer VRB, can reuse the resource allocation methods of existing VRB and VRB to the resource mapping of PRB, has reduced the complexity of realization and standard.
Fig. 7 is the schematic diagram of the polymerization control channel of one embodiment of the invention.Fig. 8 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 7.
The difference of the embodiment of Fig. 7 and the embodiment of Fig. 5 is in the polymerization methods (2) of E-PDCCH, and an E-PDCCH is polymerized by 2 the first control channel logical blocks, and corresponding search volume as shown in Figure 8.
The embodiment of the invention is mapped in an E-PDCCH on the integer VRB, can reuse the resource allocation methods of existing VRB and VRB to the resource mapping of PRB, has reduced the complexity of realization and standard.
Fig. 9 is the schematic diagram of the polymerization control channel of one embodiment of the invention.Figure 10 is the schematic diagram corresponding to the search volume of the control channel detection of Fig. 9.
Define the first control channel logical block and the second control channel logical block, E-PDCCH has 4 kinds of polymerization methodses, is respectively (1). and an E-PDCCH is polymerized by 1 the first control channel logical block; (2). E-PDCCH is polymerized or 2 the first control channel logical blocks are polymerized by 1 the second control channel logical block; (3). E-PDCCH is polymerized or 4 the first control channel logical blocks are polymerized by 2 the second control channel logical blocks; (4). E-PDCCH is polymerized or 8 the first control channel logical blocks are polymerized by 4 the second control channel logical blocks, as shown in Figure 9.
Corresponding search volume is (1). there are 6 candidate E-PDCCH the search volume, and each candidate E-PDCCH is polymerized by 1 the first control channel logical block; (2). there is 6 candidates' E-PDCCH the search volume, and wherein 4 candidate E-PDCCH are polymerized by 1 the second control channel logical block, and 2 candidates' E-PDCCH is by 2 the second control channel unit; (3). there are 3 candidate E-PDCCH the search volume, and wherein 2 candidate E-PDCCH are polymerized by 2 the second control channel logical blocks, and 1 candidate E-PDCCH is polymerized by 4 the first control channel logical blocks; (4). there are 2 candidate E-PDCCH the search volume, and wherein each candidate E-PDCCH is polymerized by 4 the second control channel logical blocks, as shown in figure 10.
The embodiment of the invention is mapped in an E-PDCCH on the integer VRB, can reuse the resource allocation methods of existing VRB and VRB to the resource mapping of PRB, has reduced the complexity of realization and standard.
Figure 11 is the block diagram of the transmitter of one embodiment of the invention.The transmitter 110 of Figure 11 can be arranged in the base station.Transmitter 110 comprises polymerized unit 111 and transmitting element 112.
The embodiment of the invention is by a polymerization integer control channel logical block formation control channel, thereby makes the distribution of resource and use more effectively, and can continue to use existing mapping and resource distribution mode, reduced the complexity that realizes.
Alternatively, as an embodiment, above-mentioned control channel is E-PDCCH, comprises for the control channel of descending scheduling or the control channel of user uplink scheduling.
Alternatively, as another embodiment, the first control channel logical block is corresponding to the VRB of first time slot in the subframe, and the second control channel logical block is corresponding to the VRB of second time slot in the described subframe.
Alternatively, as another embodiment, polymerized unit 111 can be polymerized to a control channel with first a control channel logical block.Perhaps, polymerized unit 111 can be polymerized to a control channel with at least two the first control channel logical blocks.
Alternatively, as another embodiment, polymerized unit 111 is polymerized to a control channel with 1 the second control channel logical block or 2 the second control channel logical blocks or 4 the second control channel logical blocks.
Figure 12 is the block diagram of the subscriber equipment of one embodiment of the invention.The subscriber equipment 120 of Figure 12 comprises map unit 121 and detecting unit 122.
Map unit 121 is mapped to the control channel logical block with the physical resource that receives.The control channel logical block comprises the first control channel logical block or the second control channel logical block.Detecting unit 122 detects control channel logical block that map unit 121 shines upon to obtain control channel according to the search volume that arranges.Above-mentioned search volume comprises the first search volume and the second search volume at least.Candidate control channel in the first search volume is polymerized by at least one first control channel logical block, and the candidate control channel in the second search volume is polymerized by at least one second control channel logical block.The first control channel logical block can the Bearer Control channel stock number less than the second control channel logical block can the Bearer Control channel stock number.
The embodiment of the invention is by a polymerization integer control channel logical block formation control channel, thereby make the distribution of resource and use more effective, and can continue to use existing mapping and resource distribution mode, reduce the complexity that realizes, and can simplify the blind Detecting operation of receiving terminal.
Alternatively, as an embodiment, above-mentioned control channel is E-PDCCH, comprises for the control channel of descending scheduling or the control channel of user uplink scheduling.
Alternatively, as another embodiment, the first control channel logical block is corresponding to the VRB of first time slot in the subframe, and the second control channel logical block is corresponding to the VRB of second time slot in the described subframe.
Alternatively, as another embodiment, each candidate control channel in the second search volume is polymerized by 1 the second control channel logical block or 2 the second control channel logical blocks or 4 the second control channel logical blocks.
Alternatively, as another embodiment, the search volume also comprises the 3rd search volume.At least one candidate control channel in the 3rd search volume is polymerized by at least one second control channel logical block, and the remaining candidate control channel in the 3rd search volume is polymerized by at least two the first control channel logical blocks.
Base station or the subscriber equipment 120 that can comprise above-mentioned transmitter 110 places according to the communication system of the embodiment of the invention.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, and is the convenience described and succinct, and the specific works process of the system of foregoing description, device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics of unit exists, and also can be integrated in the unit two or more unit.
If described function realizes with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (18)
1. the polymerization of a control channel is characterized in that, comprising:
Transmitter is polymerized to a control channel with at least one first control channel logical block and/or at least one the second control channel logical block;
Described the first control channel logical block can the Bearer Control channel stock number less than described the second control channel logical block can the Bearer Control channel stock number;
The signal that described transmitter will carry described control channel sends to receiver.
2. the method for claim 1 is characterized in that,
Described transmitter is polymerized to a control channel with at least one described first control channel logical block and/or at least one described the second control channel logical block, comprising:
Described transmitter is polymerized to a described control channel with described first a control channel logical block.
3. the method for claim 1 is characterized in that,
Described transmitter is polymerized to a control channel with at least one described first control channel logical block and/or at least one described the second control channel logical block, comprising:
Described transmitter is polymerized to a control channel with second a control channel logical block or two the second control channel logical blocks or four the second control channel logical blocks.
4. the method for claim 1 is characterized in that, described control channel is to strengthen Physical Downlink Control Channel E-PDCCH.
5. such as each described method of claim 1-4, it is characterized in that, described the first control channel logical block is corresponding to the virtual resource blocks VRB of first time slot in the subframe, and the second control channel logical block is corresponding to the VRB of second time slot in the described subframe.
6. the detection method of a control channel is characterized in that, comprising:
The physical resource that receives is mapped to the control channel logical block, and described control channel logical block comprises the first control channel logical block or the second control channel logical block;
Detect described control channel logical block to obtain control channel according to the search volume that arranges;
Described search volume comprises the first search volume and the second search volume at least, candidate control channel in described the first search volume is polymerized by at least one first control channel logical block, candidate control channel in described the second search volume is polymerized by at least one second control channel logical block, the stock number that described the first control channel logical block can the Bearer Control channel less than described the second control channel logical block can the Bearer Control channel stock number.
7. method as claimed in claim 6 is characterized in that, the candidate control channel in described the first search volume is polymerized by at least one first control channel logical block, comprising:
Candidate control channel in described the first search volume is polymerized by first a control channel logical block.
8. method as claimed in claim 6 is characterized in that, the candidate control channel in described the second search volume is polymerized by at least one second control channel logical block, comprising:
Candidate control channel in described the second search volume is polymerized by second a control channel logical block or two the second control channel logical blocks or four the second control channel logical blocks.
9. method as claimed in claim 6, it is characterized in that, described search volume also comprises the 3rd search volume, at least one candidate control channel in described the 3rd search volume is polymerized by at least one second control channel logical block, and the remaining candidate control channel in described the 3rd search volume is polymerized by at least two the first control channel logical blocks.
10. a transmitter is characterized in that, comprising:
Polymerized unit is used at least one first control channel logical block and/or at least one the second control channel logical block are polymerized to a control channel;
Described the first control channel logical block can the Bearer Control channel stock number less than described the second control channel logical block can the Bearer Control channel stock number;
Transmitting element, the signal that is used for carrying the control channel of described polymerized unit institute polymerization sends to receiver.
11. transmitter as claimed in claim 10 is characterized in that, described polymerized unit specifically is used for described first a control channel logical block is polymerized to a described control channel.
12. transmitter as claimed in claim 10 is characterized in that, described polymerized unit specifically is used for second a control channel logical block or two the second control channel logical blocks or four the second control channel logical blocks are polymerized to a control channel.
13. such as each described transmitter of claim 10-12, it is characterized in that, described the first control channel logical block is the virtual resource blocks VRB of first time slot in the subframe, and the second control channel logical block of described definition unit definition is the VRB of second time slot in the described subframe.
14. such as each described transmitter of claim 10-12, it is characterized in that described transmitter is arranged in the base station.
15. a subscriber equipment is characterized in that, comprising:
Map unit is used for the physical resource that receives is mapped to the control channel logical block, and described control channel logical block comprises the first control channel logical block or the second control channel logical block;
Detecting unit is used for detecting control channel logical block that described map unit shines upon to obtain control channel according to the search volume that arranges;
Described search volume comprises the first search volume and the second search volume at least, candidate control channel in described the first search volume is polymerized by at least one first control channel logical block, candidate control channel in described the second search volume is polymerized by at least one second control channel logical block, the stock number that described the first control channel logical block can the Bearer Control channel less than described the second control channel logical block can the Bearer Control channel stock number.
16. subscriber equipment as claimed in claim 15 is characterized in that, the candidate control channel in described the first search volume is polymerized by first a control channel logical block.
17. subscriber equipment as claimed in claim 15, it is characterized in that the candidate control channel in described the second search volume is polymerized by second a control channel logical block or two the second control channel logical blocks or four the second control channel logical blocks.
18. subscriber equipment as claimed in claim 15, it is characterized in that, described search volume also comprises the 3rd search volume, at least one candidate control channel in described the 3rd search volume is polymerized by at least one second control channel logical block, and the remaining candidate control channel in described the 3rd search volume is polymerized by at least two the first control channel logical blocks.
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| CN101730985A (en) * | 2007-06-20 | 2010-06-09 | 摩托罗拉公司 | Base unit and device for candidate control channels and method therefor |
| CN101810040A (en) * | 2007-09-26 | 2010-08-18 | 诺基亚公司 | Reducing decoding complexity of E-ULTRA PFCCH |
| CN101945403A (en) * | 2010-08-06 | 2011-01-12 | 中兴通讯股份有限公司 | Method and device for determining specific search space for user |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730985A (en) * | 2007-06-20 | 2010-06-09 | 摩托罗拉公司 | Base unit and device for candidate control channels and method therefor |
| CN101810040A (en) * | 2007-09-26 | 2010-08-18 | 诺基亚公司 | Reducing decoding complexity of E-ULTRA PFCCH |
| CN101945403A (en) * | 2010-08-06 | 2011-01-12 | 中兴通讯股份有限公司 | Method and device for determining specific search space for user |
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