CN103312435B - A kind of modulation of control channel or the determination method and apparatus of the transmission number of plies - Google Patents
A kind of modulation of control channel or the determination method and apparatus of the transmission number of plies Download PDFInfo
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- CN103312435B CN103312435B CN201210061810.9A CN201210061810A CN103312435B CN 103312435 B CN103312435 B CN 103312435B CN 201210061810 A CN201210061810 A CN 201210061810A CN 103312435 B CN103312435 B CN 103312435B
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Abstract
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method and apparatus of the transmission number of plies, relate to the communications field, achieve UE to modulation system or the instruction of the transmission number of plies.The method comprises: receive the configuration information that base station sends, determine search volume according to described configuration information; According to described search volume, determine the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume; According to subset corresponding in described search volume, determine modulation system or the transmission number of plies of control channel.The embodiment of the present invention is for determining modulation system or the transmission number of plies of Physical Downlink Control Channel.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of modulation of the first Physical Downlink Control Channel or the determination method and apparatus of the transmission number of plies.
Background technology
At Long Term Evolution (LongTermEvolution, be called for short LTE) Rel-8/9/10 communication system downlink transfer in, evolved base station (evolvedNodeBase, be called for short eNB) define PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel), its characteristic comprises the fixing QPSK of employing and modulates, and adopts the mono-layer fashion of single antenna or transmit diversity to transmit etc.
EPDCCH (EnhancedPhysicalDownlinkControlChannel, strengthen Physical Downlink Control Channel, it is the new down control channel introduced in LTERelease-11, also the first Physical Downlink Control Channel can be called, its characteristic comprises can adopt QPSK modulation or 16QAM modulation, the transmission number of plies of multilayer or individual layer is adopted to transmit, but for the search volume of ePDCCH, adopt the search volume of PDDCH in prior art to represent, wherein, the overall constituted mode in search volume of PDDCH, as described below:
PDCCH is by 1/2/4/8 control channel unit (ControlChannelElement, be called for short CCE) form, wherein, the CCE number forming each PDCCH is that the channel of subscriber equipment (UserEquipment is called for short UE) corresponding to the size of PDCCH and PDCCH is determined.PDCCH has 4 kinds to be polymerized rank (AggregationLevel is called for short AL), is 1,2,4,8 respectively, represents that PDCCH is mapped to 1,2,4, in 8 CCE respectively.Wherein, for each polymerization rank, have corresponding search volume size and effective PDCCH number, these are polymerized ranks and are polymerized the search volume that search volume corresponding to rank constitutes the PDCCH of UE, and UE searches for and obtains effective PDCCH in the search volume of specifying.Concrete, the determination of the search volume of the PDCCH of UE can adopt following formula:
wherein, L is polymerization rank; Y
kit is the original position of search; To public search space m '=m, to the specific search volume of user, if the carrier wave instructions field that user is configured with, then m '=m+M
(L)n
cIn
cIfor the value of carrier wave instructions field; If user does not configure carrier wave instructions field, then m '=m wherein m=0 ..., M
(L)-1.M
(L)for the number of the Physical Downlink Control Channel of candidate; N
cCH, kfor the sum of the CCE of the control area of subframe k; I=0 ..., L-1.
LTE defines two kinds of frame structure types, i.e. frame structure Class1 and frame structure type 2.Frame structure type 2 is used in a tdd system; there is a special subframe (specialsubframe); DwPTS (down navigation time slot) is comprised, GP (protection interval) and UpPTS (up navigation time slot) three territories in special subframe.Wherein DwPTS is used for transmitting descending control and data message.The configuration of different special subframes, OFDM symbol number that DwPTS comprises is different: 3 OFDM symbol that the configuration 0, DwPTS of special subframe comprises; 9 OFDM symbol that the configuration 1, DwPTS of special subframe comprises; 10 OFDM symbol that the configuration 2, DwPTS of special subframe comprises; 11 OFDM symbol that the configuration 3, DwPTS of special subframe comprises; 12 OFDM symbol that the configuration 4, DwPTS of special subframe comprises; 3 OFDM symbol that the configuration 5, DwPTS of special subframe comprises; 9 OFDM symbol that the configuration 6, DwPTS of special subframe comprises; 10 OFDM symbol that the configuration 7, DwPTS of special subframe comprises; 11 OFDM symbol that the configuration 8, DwPTS of special subframe comprises.
Need definition control signal to indicate modulation system or the number of plies of ePDCCH for two kinds of modulation systems of ePDCCH employing or two kinds of transmission numbers of plies in prior art, and need the control channel depended on by detecting other to obtain modulation system or the transmission number of plies of ePDCCH, the transmission of error may be there is like this.In addition, the two kinds of modulation systems adopted for ePDCCH or two kinds of transmission numbers of plies, UE can not be indicated to ePDCCH and specifically adopt that modulation system and the transmission number of plies.
Summary of the invention
Embodiments of the invention provide a kind of modulation of the first Physical Downlink Control Channel or the determination method and apparatus of the transmission number of plies, achieve UE to modulation system or the instruction of the transmission number of plies.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method of the transmission number of plies, described method comprises:
Receive the configuration information that base station sends, determine search volume according to described configuration information;
According to described search volume, determine the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume;
According to the subset in described search volume, determine modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
On the one hand, embodiments provide a kind of modulation or transmission number of plies locking equipment really of the first Physical Downlink Control Channel, this equipment comprises:
Receiver, for receiving the configuration information that base station sends, determines search volume according to described configuration information;
First determining unit, for according to described search volume, determines the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume;
Second determining unit, also for according to the subset in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method and apparatus of the transmission number of plies, according to the configuration information of the base station received, determine search volume, and determine corresponding subset in search volume according to this search volume, modulation system or the transmission number of plies of control channel is being determined by corresponding subset, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The modulation of a kind of first Physical Downlink Control Channel that Fig. 1 provides for the embodiment of the present invention or the determination method flow schematic diagram of the transmission number of plies;
The modulation of another kind first Physical Downlink Control Channel that Fig. 2 provides for the embodiment of the present invention or the determination method flow schematic diagram of the transmission number of plies;
The modulation of another the first Physical Downlink Control Channel that Fig. 3 provides for the embodiment of the present invention or the determination method flow schematic diagram of the transmission number of plies;
The modulation of another the first Physical Downlink Control Channel that Fig. 4 provides for the embodiment of the present invention or the determination method flow schematic diagram of the transmission number of plies;
The modulation of a kind of control channel that Fig. 5 provides for the embodiment of the present invention or transmission number of plies locking equipment structural representation really;
The modulation of the another kind of control channel that Fig. 6 provides for the embodiment of the present invention or transmission number of plies locking equipment structural representation really.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
The modulation of the first Physical Downlink Control Channel that the embodiment of the present invention provides or the determination method of the transmission number of plies, as shown in Figure 1, the method step comprises:
The configuration information that S101, reception base station send, determines search volume according to described configuration information.
S102, according to described search volume, determine the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume.
S103, according to the subset in described search volume, determine described first Physical Downlink Control Channel modulation system or transmission the number of plies.
This first Physical Downlink Control Channel comprises: the Physical Downlink Control Channel of enhancing, relaying Physical Downlink Control Channel, can also comprise other Physical Downlink Control Channel.
Optionally, the executive agent of described step S101 ~ S103 can be user equipment (UE), and the present invention is not restricted this.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method of the transmission number of plies, according to the configuration information of the base station received, determine search volume, and determine corresponding subset in search volume according to this search volume, modulation system or the transmission number of plies of control channel is being determined by corresponding subset, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
Embodiment two
The modulation of the first Physical Downlink Control Channel that the embodiment of the present invention provides or the determination method of the transmission number of plies, this first Physical Downlink Control Channel comprises: the Physical Downlink Control Channel of enhancing, relaying Physical Downlink Control Channel, can also comprise other Physical Downlink Control Channel.
It should be noted that, the first Physical Downlink Control Channel in the embodiment of the present invention is the Physical Downlink Control Channel strengthened.
As shown in Figure 2, the method step comprises:
S201, UE receive the configuration information that base station sends, and determine search volume according to described configuration information.
Wherein, this configuration information comprises: the sum of CCE, the RNTI (RadioNetworkTemporaryIdentifier) of subscriber equipment etc. in the configuration of broadcast message and the special information of user, special subframe, timeslot number, subframe.
In addition, this search volume is the set of the Physical Downlink Control Channel of the enhancing of one group of candidate.
S202, UE, according to described search volume, determine the polymerization rank of the Physical Downlink Control Channel strengthened in described search volume.
Wherein, polymerization rank has N kind, and that concrete can be { 1} or { 1,2} or { 1,2,4} or { 1,2,4,8}, as N=4, this polymerization rank is { 1,2,4,8}, it should be noted that, be polymerized rank most species in the present invention to be described for N=4, but polymerization level categories can also be other, as 1,2,3, the embodiment of the present invention is not limited to this.
S203, UE, according to the polymerization rank of the Physical Downlink Control Channel strengthened described in described search volume, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel of described enhancing.
Concrete, described modulation system comprises: 16QAM modulation or QPSK modulation; The described transmission number of plies adopts one deck mode to transmit when can be the physical downlink control channel transmission strengthened, or, adopt two-layer mode to transmit when can be the physical downlink control channel transmission strengthened.
Further, the polymerization rank of the described Physical Downlink Control Channel according to strengthening described in described search volume, determine the Physical Downlink Control Channel of described enhancing modulation system or transmission the number of plies before described method also comprise:
UE receives described polymerization rank that described base station sent by high-level signaling and modulation system corresponding to described polymerization rank or the transmission number of plies.
Exemplary, described base station is by described polymerization rank and modulation system corresponding to described polymerization rank or the transmission number of plies, send to subscriber equipment by high-level signaling, to make subscriber equipment according to described polymerization rank, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel strengthened.
Further, the polymerization rank of the described Physical Downlink Control Channel according to strengthening described in described search volume, determine the Physical Downlink Control Channel of described enhancing modulation system or transmission the number of plies before, described method also comprises:
The corresponding relation of rank and described modulation system is polymerized described in UE predefine; Or described in predefine, be polymerized the corresponding relation of rank and the described transmission number of plies.
Exemplary, be polymerized the corresponding relation of rank and described modulation system described in subscriber equipment predefine; Or described in predefine, be polymerized the corresponding relation of rank and the described transmission number of plies, and according to described polymerization rank, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel strengthened.
It should be noted that, described polymerization rank and modulation system or the corresponding relation transmitting the number of plies can be arranged to the described mapping table being polymerized rank and modulation system or transmitting the number of plies, and also can be arranged to other pattern, the present invention does not limit secondary.
Exemplary, the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 1} or { 1,2} or { Physical Downlink Control Channel of the enhancing of 1,2,4} adopts 16QAM to modulate or 2 layers of transmission for polymerization rank.
In addition, the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 1} or { 1,2} or { Physical Downlink Control Channel of the enhancing of 1,2,4} adopts QPSK to modulate or 1 layer of transmission for polymerization rank.
Or the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 1} or { 1,2} or { Physical Downlink Control Channel of the enhancing of 1,2,4} adopts QPSK to modulate or 2 layers of transmission for polymerization rank.
Or the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 1} or { 1,2} or { Physical Downlink Control Channel of the enhancing of 1,2,4} adopts 16QAM to modulate or 1 layer of transmission for polymerization rank.
Further, the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 2,4,8} or { 2,4} or { 2} or { 4} or { 4,8} or { Physical Downlink Control Channel of the enhancing of 8} adopts QPSK to modulate or 2 layers of transmission for polymerization rank.
In addition, the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 2,4 for polymerization rank, 8} or { 2,4} or { 2} or { 4} or { 4,8} or { 8} or { the Physical Downlink Control Channel employing 16QAM modulation of the enhancing of 2,8} or 1 layer of transmission.
Or the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 2,4,8} or { 2,4} or { 2} or { 4} or { 4,8} or { Physical Downlink Control Channel of the enhancing of 8} adopts 16QAM to modulate or 2 layers of transmission for polymerization rank.
Or the modulation system that described polymerization rank is corresponding or the transmission number of plies can be { 2,4 for polymerization rank, 8} or { 2,4} or { 2} or { 4} or { 4,8} or { 8} or { the Physical Downlink Control Channel employing QPSK modulation of the enhancing of 2,8} or 1 layer of transmission.
It should be noted that, modulation system or the transmission number of plies of the polymerization rank instruction in the embodiment of the present invention can also be other, and the present invention is not restricted this.
Concrete, UE receives the configuration information that base station sends, and according to this configuration information, determines search volume, according to this search volume, determines to be polymerized rank accordingly in search volume.Then, according to corresponding relation, indicate modulation system or the transmission number of plies of control channel, when polymerization rank and modulation system or the corresponding relation that transmits the number of plies are { 1} or { 1,2} or { 1,2, when the Physical Downlink Control Channel employing 16QAM modulation of the enhancing of 4} or 2 layers of transmission, if UE determines that the polymerization rank in this search volume is 1, now according to above-mentioned corresponding relation, adopt 16QAM modulation or 2 layers of transmission according to the Physical Downlink Control Channel that the polymerization rank instruction determined strengthens.
It should be noted that, described polymerization rank is the method for a class dividing subset, and namely described subset can be divided by different polymerization ranks, and multiple subset can form described search volume.
Concrete, for a certain polymerization rank determined, the CCE space of its correspondence corresponding can be obtained, this space is a certain element in subset, obtain different CCE spaces by different polymerization ranks, obtain the multiple elements in subset, then form a subset by the multiple elements obtained.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method of the transmission number of plies, according to the configuration information of the base station received, determine search volume, and determine in search volume according to this search volume and be polymerized rank accordingly, modulation system or the transmission number of plies of control channel is being determined by corresponding polymerization rank, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
Embodiment three
The modulation of the first Physical Downlink Control Channel that the embodiment of the present invention provides or the determination method of the transmission number of plies, this first Physical Downlink Control Channel comprises: the Physical Downlink Control Channel of enhancing, relaying Physical Downlink Control Channel, can also comprise other Physical Downlink Control Channel.
It should be noted that, the first Physical Downlink Control Channel in the embodiment of the present invention is the Physical Downlink Control Channel strengthened.
As shown in Figure 3, the method step comprises:
S301, UE receive the configuration information that base station sends, and determine search volume according to described configuration information.
This configuration information comprises: the sum of CCE, the RNTI (RadioNetworkTemporaryIdentifier) of subscriber equipment etc. in the configuration of broadcast message and the special information of user, special subframe, timeslot number, subframe.
In addition, this search volume is the set of the Physical Downlink Control Channel of the enhancing of one group of candidate.
S302, UE, according to described search volume, determine the subspace in described search volume; Wherein, described subspace is the Physical Downlink Control Channel set of the enhancing of the space composition of at least one polymerization rank and control channel unit corresponding to described polymerization rank in described search volume.
Wherein, the number of described subspace can be two also can be multiple, and the present invention is not restricted this.But in the present embodiment, be only two with the number of subspace and be described.
S303, UE, according to the subspace in described search volume, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel of described enhancing.
Concrete, described modulation system comprises: 16QAM modulation or QPSK modulation; The described transmission number of plies adopts one deck mode to transmit when can be the physical downlink control channel transmission strengthened, or, adopt two-layer mode to transmit when can be the physical downlink control channel transmission strengthened.
Further, described according to described subspace, determine the Physical Downlink Control Channel of described enhancing modulation system or transmission the number of plies before, also comprise:
UE receives modulation system corresponding to described subspace that described base station sent by high-level signaling and described subspace or the transmission number of plies.
Exemplary described base station is by modulation system corresponding to described subspace and described subspace or the transmission number of plies, subscriber equipment is sent to by high-level signaling, to make subscriber equipment according to described subspace, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel strengthened.
Further, described according to described subspace, determine strengthen Physical Downlink Control Channel modulation system or transmission the number of plies before, also comprise:
The corresponding relation of subspace and modulation system described in UE predefine; Or the corresponding relation of subspace described in predefine and the transmission number of plies.
Exemplary, subspace described in UE predefine and modulation system or transmit the corresponding relation of the number of plies, and according to described subspace, determine modulation system or the transmission number of plies of the Physical Downlink Control Channel strengthened.
It should be noted that, described polymerization rank and modulation system or the corresponding relation transmitting the number of plies can be arranged to the described mapping table being polymerized rank and modulation system or transmitting the number of plies, and also can be arranged to other pattern, the present invention does not limit secondary.
Exemplary, the modulation system that described subspace is corresponding or the transmission number of plies can be that { Physical Downlink Control Channel of the enhancing of 1} adopts 16QAM modulation or 2 layers of transmission for subspace.
In addition, the modulation system that described subspace is corresponding or the transmission number of plies can be that { Physical Downlink Control Channel of the enhancing of 1} adopts QPSK modulation or 1 layer of transmission for subspace.
Or the modulation system that described subspace is corresponding or the transmission number of plies can be that { Physical Downlink Control Channel of the enhancing of 2} adopts 16QAM modulation or 2 layers of transmission for subspace.
Or the modulation system that described subspace is corresponding or the transmission number of plies can be that { Physical Downlink Control Channel of the enhancing of 2} adopts QPSK modulation or 1 layer of transmission for subspace.
It should be noted that, modulation system or the transmission number of plies of the subspace instruction in the embodiment of the present invention can also be other, and the present invention is not restricted secondary.
In addition, also it should be noted that, subspace is that { 1} represents the Physical Downlink Control Channel of the enhancing of n candidate before in each polymerization rank, and for each polymerization rank, n can get different values.As being polymerized rank 1,2,4, the corresponding n=3 of 8 difference, 3,1,1.Subspace is for { 2} represents the Physical Downlink Control Channel of the enhancing of m candidate after in each polymerization rank, and for each polymerization rank, m can get different values.As being polymerized rank 1,2,4, the corresponding n=3 of 8 difference, 3,1,1.
Concrete, UE receives the configuration information that base station sends, and according to this configuration information, determines search volume, according to this search volume, determines corresponding subspace in search volume.Then, according to corresponding comparison table, indicate modulation system or the transmission number of plies of control channel, when subspace and modulation system or the corresponding relation that transmits the number of plies are { when the Physical Downlink Control Channel of the enhancing of 1} adopts the transmission number of plies that 16QAM modulates or 2 layers transmit, if UE determines that the subspace in this search volume is { 1}, now according to above-mentioned corresponding relation, adopt 16QAM modulation or 2 layers of transmission according to the Physical Downlink Control Channel that the subspace instruction determined strengthens.
It should be noted that, described subspace and described subset are relation arranged side by side, described subspace and described subset when being polymerized rank and being identical, expression be identity set.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method of the transmission number of plies, by in the application scenarios of the first Physical Downlink Control Channel, according to the configuration information of the base station received, determine search volume, and determine corresponding subspace in search volume according to this search volume, modulation system or the transmission number of plies of control channel is being determined by corresponding subspace, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
Embodiment four
The modulation of the first Physical Downlink Control Channel that the embodiment of the present invention provides or the determination method of the transmission number of plies, this first Physical Downlink Control Channel comprises: the Physical Downlink Control Channel of enhancing, relaying Physical Downlink Control Channel, can also comprise other Physical Downlink Control Channel.
It should be noted that, the first Physical Downlink Control Channel in the embodiment of the present invention is the Physical Downlink Control Channel strengthened.
As shown in Figure 4, the method step comprises:
S401, UE receive the configuration information that described base station sends, and determine the configuration of search volume and special subframe according to described configuration information.
S402, UE, according to described search volume, determine to be polymerized rank accordingly in described search volume.
Wherein, polymerization rank has N kind, and that concrete can be { 1} or { 1,2} or { 1,2,4} or { 1,2,4,8}, as N=4, this polymerization rank is { 1,2,4,8}, it should be noted that, be polymerized rank most species in the present invention to be described for N=4, but polymerization level categories can also be other, as 1,2,3, the embodiment of the present invention is not limited to this.
The polymerization rank corresponding to configuration of special subframe described in S403, UE predefine and the corresponding relation of modulation system, or the corresponding relation of polymerization rank corresponding to the configuration of special subframe described in predefine and the transmission number of plies.
S404, UE described polymerization rank corresponding to the configuration of described special subframe, determines modulation system or the transmission number of plies of the Physical Downlink Control Channel of described enhancing.
Concrete, described modulation system comprises: 16QAM modulation or QPSK modulation; The described transmission number of plies adopts one deck mode to transmit when can be the physical downlink control channel transmission strengthened, or, adopt two-layer mode to transmit when can be the physical downlink control channel transmission strengthened.
Further, according to the configuration of described special subframe, be polymerized rank, determine that the modulation system of control channel or the implementation method of the transmission number of plies can also be:
Subscriber equipment to pre-set in the configuration of described special subframe corresponding described polymerization rank and modulation system or transmits the corresponding relation of the number of plies, and according to polymerization rank corresponding in the configuration of described special subframe, determine modulation system or the transmission number of plies of control channel.
It should be noted that, described polymerization rank and modulation system or the corresponding relation transmitting the number of plies can be arranged to the described mapping table being polymerized rank and modulation system or transmitting the number of plies, and also can be arranged to other pattern, the present invention does not limit secondary.
Exemplary, special subframe be configured in 1 or 2 or 6 or 7, polymerization rank be { 2} or { 4} or { Physical Downlink Control Channel of the enhancing of 2,4} adopts 16QAM to modulate or 2 layers of transmission; Or special subframe be configured in 3 or 4 or 8, polymerization rank be { 1} or { 1,2} or { Physical Downlink Control Channel of the enhancing of 1,2,4} adopts 16QAM to modulate or 2 layers of transmission;
In addition, special subframe be configured in 1 or 2 or 6 or 7, polymerization rank be { 4} or { 4,8} or { Physical Downlink Control Channel of the enhancing of 8} adopts QPSK to modulate or 1 layer of transmission;
Or special subframe be configured in 3 or 4 or 8, { 2,4,8} or { 2,4} or { 2} or { 4} or { 4,8} or { Physical Downlink Control Channel of the enhancing of 8} adopts QPSK modulation or 1 layer of transmission.
It should be noted that, modulation system or the transmission number of plies of the polymerization rank instruction in the embodiment of the present invention can also be other, and the present invention is not restricted this.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the determination method of the transmission number of plies, by in the application scenarios of the first Physical Downlink Control Channel, according to the configuration information of the base station received, determine search volume, and determine corresponding subspace in search volume according to this search volume, modulation system or the transmission number of plies of control channel is being determined by corresponding subspace, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
Embodiment five
The modulation of the first Physical Downlink Control Channel that the embodiment of the present invention provides or transmission number of plies locking equipment 40 really, as shown in Figure 5, this equipment comprises:
Receiver 51, for receiving the configuration information that base station sends, determines search volume according to described configuration information;
First determining unit 52, for according to described search volume, determines the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume;
Second determining unit 53, also for according to the subset in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
Further, described first determining unit 52, also for according to described search volume, determines the polymerization rank of the first Physical Downlink Control Channel described in described search volume;
Described second determining unit 53, also for the polymerization rank according to the first Physical Downlink Control Channel described in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
Further, described receiver 51, also for receiving described polymerization rank that described base station sent by high-level signaling and modulation system corresponding to described polymerization rank or the transmission number of plies.
Further, this equipment also comprises:
Definition unit 54, for being polymerized the corresponding relation of rank and described modulation system described in predefine; Or
The corresponding relation of rank and the described transmission number of plies is polymerized described in predefine.
Further, described first determining unit 52, also for according to described search volume, determines the subspace in described search volume; Wherein, described subspace is the first Physical Downlink Control Channel set of the space composition of at least one polymerization rank and control channel unit corresponding to described polymerization rank in described search volume;
Described second determining unit 53, also for according to the subspace in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
Further, described receiver 51, also for receiving modulation system corresponding to described subspace that described base station sent by high-level signaling and described subspace or the transmission number of plies.
Further, described definition unit 54, also for the corresponding relation of subspace described in predefine and modulation system; Or
Subspace described in predefine and the corresponding relation transmitting the number of plies.
Further, described receiver 51, also for receiving the configuration information that described base station sends, determines the configuration of search volume and special subframe according to described configuration information;
Described definition unit 54, also for special subframe described in predefine configuration corresponding to polymerization rank and the corresponding relation of modulation system, or the corresponding relation of polymerization rank corresponding to the configuration of special subframe described in predefine and the transmission number of plies;
Described second determining unit 53, also for the described polymerization rank corresponding to the configuration of described special subframe, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
Embodiments provide a kind of modulation of the first Physical Downlink Control Channel or the indicating equipment of the transmission number of plies, according to the configuration information of the base station received, determine search volume, and determine corresponding subset in search volume according to this search volume, modulation system or the transmission number of plies of control channel is being determined by corresponding subset, thus realize UE to modulation system or the instruction of the transmission number of plies, avoid modulation system or the transmission number of plies that definition control signal indicates the first Physical Downlink Control Channel, the control channel depended on by detecting other is not needed to obtain modulation system or the transmission number of plies of the first Physical Downlink Control Channel yet, avoid the transmission of error.
The embodiment of the present invention additionally provides a kind of processor, for receiving the configuration information that base station sends, determines search volume according to described configuration information; According to described search volume, determine the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume; According to the subset in described search volume, determine modulation system or the transmission number of plies of described first Physical Downlink Control Channel.This processor can be connected with memory, content in the determination method of the adjustment of the first Physical Downlink Control Channel that the action that this memory performs for this processor of information storing this processor process can provide with reference to above-described embodiment or the transmission number of plies, does not repeat them here.Further, described processor may reside in subscriber equipment.
The embodiment of the present invention also provides a kind of chip, and this chip is for determining adjustment or the transmission number of plies of the first Physical Downlink Control Channel, and this chip can comprise above-mentioned processor.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, and such as, the division of described unit, is only a kind of logic function and divides, and actual can have other dividing mode when realizing.Such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit comprises, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the part steps of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, be called for short ROM), random access memory (RandomAccessMemory, be called for short RAM), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (20)
1. the modulation of the first Physical Downlink Control Channel or a determination method for the transmission number of plies, is characterized in that, comprising:
Receive the configuration information that base station sends, determine search volume according to described configuration information;
According to described search volume, determine the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume;
According to the subset in described search volume, determine modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
2. method according to claim 1, is characterized in that, described according to described search volume, determines that in described search volume, corresponding subset is: according to described search volume, determine the polymerization rank of the first Physical Downlink Control Channel described in described search volume;
Described according to the subset in described search volume, determine described first Physical Downlink Control Channel modulation system or transmission the number of plies for: according to the polymerization rank of the first Physical Downlink Control Channel described in described search volume, determine described first Physical Downlink Control Channel modulation system or transmission the number of plies.
3. method according to claim 2, is characterized in that, the described polymerization rank according to the first Physical Downlink Control Channel described in described search volume, before the modulation system determining described first Physical Downlink Control Channel or the transmission number of plies, also comprises:
Receive described polymerization rank that described base station sent by high-level signaling and modulation system corresponding to described polymerization rank or the transmission number of plies.
4. method according to claim 2, is characterized in that, the described polymerization rank according to the first Physical Downlink Control Channel described in described search volume, before the modulation system determining described first Physical Downlink Control Channel or the transmission number of plies, also comprises:
The corresponding relation of rank and described modulation system is polymerized described in predefine; Or
The corresponding relation of rank and the described transmission number of plies is polymerized described in predefine.
5. method according to claim 3 or 4, is characterized in that, the corresponding relation of described modulation system and the described transmission number of plies is:
Described polymerization rank be 1}, 1,2}, 1,2,4} any one first Physical Downlink Control Channel adopt 16QAM modulation or 2 layers of transmission.
6. method according to claim 3 or 4, is characterized in that, the corresponding relation of the modulation system that described polymerization rank is corresponding and the described transmission number of plies is:
Described polymerization rank be 2,4,8}, 2,4}, 2}, 4}, 4,8}, 8} any one first Physical Downlink Control Channel adopt QPSK modulation or 1 layer of transmission.
7. method according to claim 1, is characterized in that, described according to described search volume, determines that the subset in described search volume is: according to described search volume, determine the subspace in described search volume; Wherein, described subspace is the first Physical Downlink Control Channel set of the space composition of at least one polymerization rank and control channel unit corresponding to described polymerization rank in described search volume;
Described according to the subset in described search volume, determine that the modulation system of the first Physical Downlink Control Channel or the transmission number of plies are: according to the subspace in described search volume, determine modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
8. method according to claim 7, is characterized in that, described according to described subspace, before the modulation system determining described first Physical Downlink Control Channel or the transmission number of plies, also comprises:
Receive modulation system corresponding to described subspace that described base station sent by high-level signaling and described subspace or the transmission number of plies.
9. method according to claim 7, is characterized in that, described according to described subspace, before the modulation system determining the first Physical Downlink Control Channel or the transmission number of plies, also comprises:
The corresponding relation of subspace described in predefine and modulation system; Or
Subspace described in predefine and the corresponding relation transmitting the number of plies.
10. method according to claim 2, is characterized in that,
The configuration information that described reception base station sends, determine search volume according to described configuration information, be specially:
Receive the configuration information that described base station sends, determine the configuration of search volume and special subframe according to described configuration information;
According to described polymerization rank, determine modulation system or the transmission number of plies of described first Physical Downlink Control Channel, be specially:
Polymerization rank corresponding to the configuration of special subframe described in predefine and the corresponding relation of modulation system, or the corresponding relation of polymerization rank corresponding to the configuration of special subframe described in predefine and the transmission number of plies;
Described polymerization rank corresponding to the configuration of described special subframe, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
11. methods according to claim 10, is characterized in that, the corresponding relation of described modulation system and the described transmission number of plies be following any one:
When described special subframe be configured in 1,2,6,7 any one time, described polymerization rank is that { 2}, { 4}, { any one the first Physical Downlink Control Channel of 2,4} adopts 16QAM modulation or 2 layers of transmission; Or
When described special subframe be configured in 3,4,8 any one time, described polymerization rank is that { 1}, { 1,2}, { any one the first Physical Downlink Control Channel of 1,2,4} adopts 16QAM modulation or 2 layers of transmission; Or
When described special subframe be configured in 1,2,6,7 any one time, described polymerization rank is that { 4}, { 4,8}, { any one the first Physical Downlink Control Channel of 8} adopts QPSK modulation or 1 layer of transmission; Or
When described special subframe be configured in 3,4,8 any one time, described polymerization rank is that { 2,4,8}, { 2,4}, { 2}, { 4}, { 4,8}, { any one the first Physical Downlink Control Channel of 8} adopts QPSK modulation or 1 layer of transmission.
12. according to claim 1-4, any one of 7-11 method, it is characterized in that, described search volume is the set of first Physical Downlink Control Channel of one group of candidate.
The modulation of 13. a kind of first Physical Downlink Control Channel or the indicating equipment of the transmission number of plies, is characterized in that, comprising:
Receiver, for receiving the configuration information that base station sends, determines search volume according to described configuration information;
First determining unit, for according to described search volume, determines the subset in described search volume; Wherein, the subset in described search volume is the set of first Physical Downlink Control Channel of at least one candidate in described search volume;
Second determining unit, also for according to the subset in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
14., according to equipment described in claim 13, is characterized in that,
Described first determining unit, also for according to described search volume, determines the polymerization rank of the first Physical Downlink Control Channel described in described search volume;
Described second determining unit, also for the polymerization rank according to the first Physical Downlink Control Channel described in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
15., according to equipment described in claim 13, is characterized in that,
Described receiver, also for receiving polymerization rank that described base station sent by high-level signaling and modulation system corresponding to described polymerization rank or the transmission number of plies.
16., according to equipment described in claim 13, is characterized in that, described equipment also comprises:
Definition unit, is polymerized the corresponding relation of rank and described modulation system for predefine; Or
The corresponding relation of rank and the described transmission number of plies is polymerized described in predefine.
17., according to equipment described in claim 13, is characterized in that,
Described first determining unit, also for according to described search volume, determines the subspace in described search volume; Wherein, described subspace is the first Physical Downlink Control Channel set of the space composition of at least one polymerization rank and control channel unit corresponding to described polymerization rank in described search volume;
Described second determining unit, also for according to the subspace in described search volume, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
18., according to equipment described in claim 13, is characterized in that,
Described receiver, also for receiving modulation system corresponding to described subspace that described base station sent by high-level signaling and described subspace or the transmission number of plies.
19., according to equipment described in claim 13, is characterized in that,
Described definition unit, also for the corresponding relation of subspace described in predefine and modulation system; Or
Subspace described in predefine and the corresponding relation transmitting the number of plies.
20., according to equipment described in claim 13, is characterized in that,
Described receiver, also for receiving the configuration information that described base station sends, determines the configuration of search volume and special subframe according to described configuration information;
Described definition unit, also for special subframe described in predefine configuration corresponding to polymerization rank and the corresponding relation of modulation system, or the corresponding relation of polymerization rank corresponding to the configuration of special subframe described in predefine and the transmission number of plies;
Described second determining unit, also for the described polymerization rank corresponding to the configuration of described special subframe, determines modulation system or the transmission number of plies of described first Physical Downlink Control Channel.
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| CN110324134B (en) * | 2017-08-30 | 2021-12-10 | 中国信息通信研究院 | Method and device for configuring search space of downlink control channel |
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| CN101764642A (en) * | 2009-12-30 | 2010-06-30 | 中兴通讯股份有限公司 | Transmission method and transmission system of descending control information |
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