CN102801504B - The method and apparatus that the method that control channel maps, control channel detect - Google Patents

The method and apparatus that the method that control channel maps, control channel detect Download PDF

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CN102801504B
CN102801504B CN201210325361.4A CN201210325361A CN102801504B CN 102801504 B CN102801504 B CN 102801504B CN 201210325361 A CN201210325361 A CN 201210325361A CN 102801504 B CN102801504 B CN 102801504B
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control channel
signalling length
search volume
member carrier
different
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CN102801504A (en
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薛丽霞
曲秉玉
官磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The embodiment of the present invention relates to the method for a kind of control channel mapping, the method and apparatus of control channel detection, the method that this control channel maps comprises: for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, described in making, the control channel of at least two identical Signalling length uses identical search volume, the control channel of described at least two identical Signalling length is mapped to the search volume of the correspondence determined; And/or, control channel at least two different Signalling length determines corresponding search volume respectively, make the control channel of at least two different Signalling length at least one time tranfer unit use different search volumes, the control channel of at least two different Signalling length is mapped to respectively the search volume of the correspondence determined.The embodiment of the present invention, not only can reduce the conflict of control channel, also can reduce control channel blind Detecting number of times.

Description

The method and apparatus that the method that control channel maps, control channel detect
Technical field
The present invention relates to communication technical field, specifically relate to the method and apparatus of the method for a kind of control channel mapping, control channel detection.
Background technology
At 3GPP evolution Universal Terrestrial wireless access (EvolvedUniversalTerrestrialRadioAccess, be called for short: E-UTRA) in communication system, subscriber equipment (UserEquipment, be called for short: the UE) transmission of physical data channel, needs this UE of scheduling assignment instruction notification by system.These scheduling assignment instructions are normally by Physical Downlink Control Channel (PhysicalDownlinkControlChannel, be called for short: PDCCH) carry, wherein scheduling assignment instruction is such as corresponding to Physical Downlink Shared Channel (PhysicalDownlinkSharedChannel, be called for short: descending scheduling PDSCH) is granted (DL_grant) and corresponded to Physical Uplink Shared Channel (PhysicalUplinkShareChannel, abbreviation: uplink scheduling PUSCH) grants (UL_grant).
At LTE Frequency Division Duplexing (FDD) (FrequencyDivisionDuplex, be called for short: FDD) in system, UE and network side can only carry out the transmission of data by a pair uplink and downlink member carrier, PDCCH comprises DL_grant and UL_grant two kinds dispatches indication signaling, specifically for indicating this member carrier to the scheduling of downlink or uplink physical data channel resource corresponding to upper UE.But, after LTE-Advanced system introduces carrier aggregation technology, UE and network side can simultaneously at multiple member carrier or member carrier to the transmission of enterprising row data, and the dispatch of the data channel that each member carrier is corresponding is absolute coding, the scheduling of resource signaling on each like this member carrier needs a PDCCH.
In carrier aggregation system, PDCCH corresponding to a UE can be transmitted on each member carrier, for dispatching the PDSCH of this UE on this member carrier or the transmission of the PUSCH corresponding with this member carrier.Also can be on one or several member carrier, transmit the PDCCH of this UE.At this moment PDCCH not only can indicate the transmission of the data channel in the downlink member carrier at its place and the uplink member carrier of correspondence, but also can to indicate with it not on same downlink member carrier or be not the transmission of data channel on corresponding up paired member carrier.
For a UE, when PDCCH corresponding to multiple member carrier is on a member carrier or when less several member carriers transmit, the search volume size corresponding due to control channel is limited, so the probability collided between control channel is very large, the part PDCCH of this UE may be caused to be scheduled, thus cause the partial data of this UE to be transmitted, reduce the throughput of UE.
Summary of the invention
The method and apparatus that a kind of method that the embodiment of the present invention provides control channel to map, control channel detect, the probability collided to make control channel reduces.
The method that a kind of control channel that the embodiment of the present invention provides maps, comprising:
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, described in making, the control channel of at least two identical Signalling length uses identical search volume, the control channel of described at least two identical Signalling length is mapped to the search volume of the correspondence determined; And/or
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes, the control channel of described at least two different Signalling length is mapped to respectively the search volume of the correspondence determined.
The method that a kind of control channel that the embodiment of the present invention provides detects, comprising:
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, described in making, the control channel of at least two identical Signalling length uses identical search volume, in the described identical search volume determined, detect the control channel of the Signalling length that described identical search volume comprises; And/or
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, the control channel of at least two different Signalling length described at least one time tranfer unit is made to use different search volumes, in the described different search volume determined, detect the control channel of the Signalling length that described different search volume comprises respectively.
A kind of transmitter that the embodiment of the present invention also provides, comprising:
First processing module and/or the second processing module, wherein,
Described first processing module comprises: the first search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume; And first mapping block, for the control channel of described at least two identical Signalling length being mapped to the search volume of the correspondence that described first search volume determination module is determined;
Described second processing module comprises: the second search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; And second mapping block, for the control channel of described at least two different Signalling length being mapped to respectively the search volume of the correspondence that described second search volume determination module is determined.
A kind of receiving equipment that the embodiment of the present invention also provides, comprising:
First processing module and/or the second processing module, wherein,
Described first processing module comprises: the first search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume; And first detection module, in the described identical search volume determined at described first search volume determination module, detect the control channel of the Signalling length that described identical search volume comprises;
Described second processing module comprises: the second search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; And second detection module, in the described different search volume determined at described second search volume determination module, detect the control channel of the Signalling length that described different search volume comprises respectively.
Known by the description of technique scheme, various embodiments of the present invention are by flexible configuration search volume, make for same polymerization level, control channel at least two different Signalling length determines the search volume of oneself correspondence respectively, the search volume that this is determined is different at least one time tranfer unit, thus search volume corresponding to the control channel realizing these at least two different Signalling length is different, decrease the probability of control channel collision corresponding to the control channel of these at least two different Signalling length, ensure that the control channel of UE subscriber equipment effectively can be dispatched and transmit, and then ensure that the smooth transmission of data of respectively this UE subscriber equipment, improve the throughput of subscriber equipment, preferably, on the other hand, the control channel of at least two identical Signalling length can be made to use identical search volume by the embodiment of the present invention, increase the transmission flexibility of identical Signalling length control channel corresponding to different members carrier wave, decrease the probability of the control channel collision of these at least two kinds identical Signalling length.
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 schematic flow sheet of the method that the control channel that Fig. 1 provides for the embodiment of the present invention one maps;
A kind of schematic diagram of the method that the control channel that Fig. 2 a provides for the embodiment of the present invention two maps;
The another kind of schematic diagram of the method that the control channel that Fig. 2 b provides for the embodiment of the present invention two maps;
The another kind of schematic diagram of the method that the control channel that Fig. 3 provides for the embodiment of the present invention two maps;
The schematic diagram of control channel search volume defining method in the method that the control channel that Fig. 4 provides for the embodiment of the present invention two maps;
The flow chart of the method that the control channel that Fig. 5 provides for the embodiment of the present invention three detects;
The structural representation of the transmitter that Fig. 6 provides for the embodiment of the present invention four;
The structural representation of the receiving equipment that Fig. 7 provides for the embodiment of the present invention five.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment below in conjunction with accompanying drawing, technical scheme provided by the invention is described in further detail.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.
3GPPE-UTRA system also claims Long Term Evolution, and (LongTermEvolution is called for short: LTE) system.In LTE system, support the various bandwidth that (100RB) is variable from 1.4M (6RB) to 20M, wherein RB is Resource Block (ResourceBlock; Be called for short: RB).For any one system bandwidth, in each time tranfer unit such as subframe, physical layer PDCCH takies certain resource in time domain and frequency domain, and system assignment is also transformable to the running time-frequency resource of PDCCH.Particularly, PDCCH takies all available sub-carrier resources on frequency domain.But system adopts physical layer control format indicating channel (Physicalcontrolformatindicatorchannel in time domain, be called for short: control format instruction (controlformatindicator PCFICH) in channel, be called for short: the CFI) time-domain resource that takies of value flexible configuration PDCCH, namely OFDM (OrthogonalFrequencyDivisionMultiplexing is adopted, be called for short: the OFDM) number of symbol, 2 bits are adopted to represent the situation of the number of three kinds of different OFDM symbol in system, such as: system bandwidth is greater than during 10RB 1, 2, three kinds of situations of 3 OFDM symbol, or 2 when being less than or equal to 10RB of system bandwidth, 3, three kinds of situations of 4 OFDM symbol situations.The running time-frequency resource (number of sub-carrier resources, OFDM symbol) distributing to PDCCH is divided into multiple control channel unit (ControlChannelElement, be called for short: CCE), and CCE is the minimum unit of composition PDCCH running time-frequency resource, the running time-frequency resource that PDCCH takies has 4 kinds of polymerization levels, correspond respectively to and take 1,2,4 and 8 CCE, transmit the PDCCH of this subscriber equipment according to the channel quality status of subscriber equipment, polymerization level (corresponding different code rates) that Systematic selection is suitable.
In LTE system, the physical layer PDCCH of all subscriber equipmenies is shared in each time tranfer unit, subscriber equipment utilizes the possibility of self specific scrambler to PDCCH any one transformat to carry out blind Detecting in set search volume, the gentle position of polywater etc. of running time-frequency resource CCE detect various possible control channel message length, taking.In control channel region, carrying out the number of times of blind Detecting in order to reduce subscriber equipment, defining the transmission mode adopted in subscriber equipment a period of time, and having planned search volume.A kind of transmission mode that may adopt in subscriber equipment a period of time is by the subscriber equipment of the semi-static notice of proprietary signaling, in LTE system, downlink transfer has 7 kinds of patterns, often kind of transmission mode is in requisition for detection two kinds of PDCCH forms, and the concrete PDCCH form of subscriber equipment is determined by blind Detecting in search volume.Wherein search volume is one section of running time-frequency resource in logic according to CCE definition, and subscriber equipment receives control channel and carries out blind Detecting in this space.Search volume is divided into public search space and the specific search volume of subscriber equipment, and wherein public search space refers to and is allly in connection status and the search volume needing to detect that all subscriber equipmenies of PDCCH all need to carry out blind Detecting; The specific search volume of subscriber equipment refers to that only this subscriber equipment needs to carry out PDCCH blind Detecting in this specific search volume.In the specific search volume of subscriber equipment, the CCE of some forms a search volume, wherein 4 kinds of search volumes corresponding to polymerization level, specify in agreement, are respectively 6,6,2 and 2 with the space size that 1,2,4 and 8 CCE amounts to 4 kinds of polymerization levels corresponding.Except no special mentions public search space, mapping and detection method mainly for the control channel in the specific search volume of subscriber equipment in the embodiment of the present invention.
When system call subscriber equipment is launched or received data, the PDCCH for dispatching instruction can certain the CCE polymerization level in the specific search volume of this subscriber equipment or public search space be carried out mapping and launching.This subscriber equipment needs to carry out receiving and blind Detecting in possible PDCCH mapping and the specific search volume of transmitting or public search space simultaneously, if subscriber equipment passes through CRC (CyclicalRedundancyCheck to the signaling data detected, be called for short: CRC) verify, illustrate that the PDCCH detected is that system sends to this subscriber equipment.Subscriber equipment is resolved this PDCCH according to the signaling format of normalized definition, determines that this subscriber equipment needs the running time-frequency resource position of reception or launch of data channels.Then, subscriber equipment completes reception, the transmitting of data, realizes the communication of subscriber equipment and system.
At further evolution and the enhancing system high Long Term Evolution (LongTermEvolution-Advanced of LTE system, be called for short: LTE-Advanced) in system, carrier aggregation (CarrierAggregation) technology is used for supporting wider bandwidth, to meet the peak data rate requirement of International Telecommunication Union for the forth generation communication technology.In carrier aggregation, the frequency spectrum of two or more member carrier (ComponentCarrier) is grouped together in together to obtain the LTE-Advanced system of wider transmission bandwidth.Wherein may to be configured to LTE system compatible for each member carrier, and the frequency spectrum of each member carrier can be adjacent continuous frequency spectrum, also can be the non-conterminous frequency spectrum in identical frequency band or even the discontinuous spectrum in different frequency bands.LTE subscriber equipment can only access wherein a pair compatible member carrier and carry out data transmit-receive, and LTE-Advanced subscriber equipment can access multiple member carrier according to ability and business demand simultaneously carries out data transmit-receive.Carrier aggregation technology is also spectrum aggregating (SpectrumAggregation) technology, or bandwidth expansion (BandwidthExtension) technology.
In LTE-Advanced system, two or more member carrier can be dispatched simultaneously use to subscriber equipment, for while transmission user equipment up or downlink business.In carrier aggregation technology, each member carrier has independently hybrid automatic repeat-request (Hybrid-ARQ, be called for short: HARQ) process, and system can be the member carrier of the identical or different number of LTE-Advanced user device configuration, for transmitting data channel or control channel.The PDCCH of this subscriber equipment can be transmitted on each member carrier, for dispatching this member carrier downlink traffic channel PDSCH or the reverse link traffic channel PUSCH corresponding with this member carrier, now, data channel of control channel PDCCH and its scheduling can on same member carrier, also can on the member carrier that the up-downgoing of correspondence is paired; In addition, also all PDCCH of this subscriber equipment can be transmitted on one or several member carrier, for dispatching PDSCH or PUSCH that this subscriber equipment transmits on the up or descending member carrier of all scheduling, now the data channel of control channel and its scheduling can not at same member carrier, may not be the member carrier that corresponding up-downgoing is paired, be called that control channel is separated with its data channel dispatched.
In heterogeneous network system, the carrier-in-interference coordination system is applied between the member carrier of different system, or strengthen control channel transmission performance, the carrier wave selecting interference less is as the carrier wave of Bearer Control channel, or coordinate the control signal covering problem of different system, avoid subscriber equipment handoff procedure frequently between multiple member carriers of same community.Such as: in family's service system (HomeNodeB), because the subscriber equipment supported is less, control channel demand is also less, and a Signed Domination channel resource even in a member carrier just can satisfy the demands.Other member carrier can be specifically designed to transmission data, improves the speed of data, also can coordinate to select to disturb less member carrier Bearer Control channel with macrocell simultaneously.At the multicast communication/reception (CoordinatedMultipointTransmission/Reception of collaboration type; Be called for short: CoMP) in system, two or more community or access point give same subscriber equipment at different member carrier transmitting datas, but control channel can only be launched on few members's carrier wave of Serving cell.When comparatively downlink business demand is larger for the uplink service of LTE-Advanced subscriber equipment, for the downlink member carrier number of this user device configuration may be less than uplink member carrier number, the existence downlink member carrier that is bound to is launched multiple PDCCH and is dispatched corresponding multiple up PUSCH channel, can avoid the unnecessary downlink member carrier of subscriber equipment receives data.When polymerization member carrier bandwidth not etc., when especially having few members's carrier bandwidths less, some time, PDCCH for data dispatching on this member carrier is limited, and the resource of data channel also has residue, the PDCCH of this little bandwidth carrier wave data transmission of scheduling can be transmitted on other carrier waves.
The following each embodiment of the present invention is described for LTE-Advanced system, but be not limited to LTE-Advanced system, other system can also be applicable to, such as Wideband Code Division Multiple Access (WCDMA) access (WidebandCodeDivisionMultipleAccess, be called for short: WCDMA) system, or LTE system etc.
As shown in Figure 1, the schematic flow sheet of the method that the control channel provided for the embodiment of the present invention one maps, the method comprises the following steps:
Step 11, for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume.
Step 12, the control channel of described at least two identical Signalling length is mapped to the search volume of the correspondence determined.
Control channel is mapped in the search volume determined according to Signalling length by transmitter, the network equipments such as wherein transmitter is such as, the base station of side, networking.
In the present embodiment, after step 12, the step of being launched by the control channel be mapped in search volume can also be comprised.
Wherein, make the control channel of at least two identical Signalling length use identical search volume, specifically comprise: make the control channel of different members carrier wave corresponding at least two identical Signalling length use identical search volume; Or make the control channel of same member carrier corresponding at least two identical Signalling length use identical search volume.
Method when above-mentioned step 11 and step 12 are the control channel of one or more member carrier existence at least two identical Signalling length, when there is one or more member carrier and there is the control channel of at least two different Signalling length, step 11 and step 12 also for following steps or can perform together with following steps:
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes;
The control channel of described at least two different Signalling length is mapped to respectively the search volume of the correspondence determined.
Wherein for the control channel of at least two different Signalling length determines corresponding search volume respectively, the control channel of at least two different Signalling length described at least one time tranfer unit is made to use different search volumes, specifically comprise: be the control channel of at least two different Signalling length corresponding to different members carrier wave, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; Or be the control channel of at least two different Signalling length that same member carrier is corresponding, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.
During practical application, the mapping ruler of the search volume also needing control channel that clear and definite member carrier is corresponding corresponding before transmitting-receiving two-end transmits control channel mutually, comprise: the control channel of which identical Signalling length needs which carrier wave clear and definite concrete is corresponding uses identical search volume, and/or clearly specifically need the control channel for which different Signalling length corresponding to which carrier wave to determine search volume respectively.In addition, before the mapping ruler of search volume corresponding to the control channel that above-mentioned clear and definite member carrier is corresponding, in order to realize transmitting and the detection of transmitting-receiving two-end control channel, also may need to comprise the some or position, search volume that some control channel is corresponding corresponding to mapping ruler that is initial or acquiescence, member carrier and size.The method determining the mapping ruler of the search volume that control channel that member carrier is corresponding is corresponding can be that standard agreement is determined, receiving-transmitting sides can be specifically derived according to the algorithm of standard agreement, or transmitting terminal is by proprietary signaling receiving equipment, concrete proprietary signaling can comprise the control channel of high-rise semi-static signaling, physical layer dynamic signaling and Medium Access Layer.
When the control channel at least two different Signalling length determines corresponding search volume respectively, the search volume that the corresponding control channel of these two different Signalling length is corresponding determines namely independently, can not have dependence Sum fanction respectively.Search volume corresponding to the control channel of two different Signalling length can be corresponding according to two different Signalling length respectively different Signalling length marks determine, or respectively according to the control channel of two different Signalling length corresponding member carrier mark determine, or the correlative of comprehensive above any one or multiple combination is determined, the present invention does not limit the selection of concrete identification parameter.Such as: member carrier A is to having a, b, c tri-kinds of Signalling length, member carrier B is to having a, b, d, e tetra-kinds of Signalling length, the control channel of Signalling length a wherein can be made to use identical search volume, and determine the search volume that Signalling length c is corresponding with the control channel of Signalling length d respectively, the determination of the search volume that these two kinds control channels comprising Signalling length c and Signalling length d are corresponding is independently, such as, different Signalling length marks corresponding according to Signalling length c and Signalling length d are respectively determined, or carrier identification corresponding to the member carrier B respectively corresponding to carrier identification corresponding to Signalling length c place member carrier A and Signalling length d is determined, or comprehensive above two correlatives are determined, the present invention does not limit the selection of concrete identification parameter, consequently, the search volume that the control channel of two kinds of different Signalling length is corresponding may be identical, also may be different, by determining that the randomization of the parameter role of search volume in search volume defining method determines, or other independently defining method to determine.In addition, the present invention can not limit search volume corresponding to the control channel of member carrier A corresponding other Signalling length b other Signalling length corresponding to member carrier B b, e.
Preferably, if make the control channel with identical Signalling length use identical search volume, subscriber equipment carries out some control channels that blind Detecting can know the control channel of whether corresponding all identical Signalling length in described search volume, thus the number of times of less blind Detecting reduce detection complexity.In addition, for the size of search volume, namely comprise the number of CCE, arrange relatively more flexible, when meeting control channel collision probability, reduce search volume as far as possible, the number of times of blind Detecting can be reduced further.Such as: member carrier A is to there being a, b, c tri-kinds of Signalling length, member carrier B is to there being a, b, d, e tetra-kinds of Signalling length forms, member carrier C is to there being a, f two kinds of Signalling length, then by Signalling length a corresponding for member carrier A, the Signalling length a that member carrier B is corresponding, the control channel of the Signalling length a corresponding with member carrier C uses identical search volume, and the control channel of the Signalling length b that the Signalling length b that member carrier A is corresponding is simultaneously corresponding with member carrier B also uses identical search volume.
Preferably, the control channel of different Signalling length is made to determine respective search volume respectively, like this, the search volume that the control channel of different Signalling length is corresponding may be different, thus decrease the probability of the control channel of different Signalling length, ensure that the control channel of UE subscriber equipment effectively can be dispatched and transmit, and then ensure that the smooth transmission of data of respectively this UE subscriber equipment, improve the throughput of subscriber equipment.Compared with also there is identical search volume with the control channel of different Signalling length, independently determine that the method for the search volume that the control channel of each Signalling length is corresponding can make the control channel of each Signalling length described have the search volume of oneself correspondence, when these search volumes are not overlapping and size is identical with the size of contrast scheme, reduce the collision probability of control channel, do not increase blind Detecting number of times, because only need the control channel detecting corresponding Signalling length in the search volume that the control channel of each Signalling length described is corresponding simultaneously.Such as: member carrier A is to there being a, c two kinds of Signalling length, member carrier B is to there being a, b two kinds of Signalling length forms, member carrier C is to there being d Signalling length, then determine the Signalling length c that member carrier A is corresponding respectively, the search volume that the control channel of the Signalling length b that member carrier B is corresponding, the Signalling length d corresponding with member carrier C is corresponding.
Preferably, determine that the method for the search volume that control channel is corresponding can also comprise: the control channel of the identical Signalling length that member carrier is corresponding uses identical search volume, or determine the search volume that the control channel of the different Signalling length that member carrier is corresponding is corresponding respectively.Wherein, when the control channel of the identical Signalling length that member carrier is corresponding uses identical search volume, subscriber equipment carries out some control channels that blind Detecting can know the control channel of whether corresponding all identical Signalling length in described identical search volume, thus the number of times of less blind Detecting reduce detection complexity.In addition, the control channel of the different Signalling length that the embodiment of the present invention is corresponding with member carrier also has compared with identical search volume, independently determine that the method for the search volume that the control channel of each Signalling length is corresponding can make each Signalling length have the search volume of oneself correspondence, when these search volumes are not overlapping and size is identical with the size of contrast scheme, the collision probability of control channel can be reduced, do not increase blind Detecting number of times simultaneously, because only need the control channel detecting corresponding Signalling length Signalling length in the search volume that it is determined.Such as: member carrier A is to there being a, b two kinds of Signalling length, the search volume that then control channel of Signalling length a, b that determination member carrier A is independently corresponding is corresponding, the result determined can for identical, also can be different, be by determining that the randomization of the parameter role of search volume in search volume defining method determines.
During specific implementation, for the control channel of identical Signalling length corresponding to member carrier, such as: form 0 and form 1A have identical Signalling length, the information of 1 bit can be comprised separately, in order to clearly to indicate the concrete of this control channel to be form 0 or form 1A in these two forms.If the control channel of identical Signalling length is from different member carriers, can the carrier indication information in reuse control channel be which carrier wave in order to what distinguish concrete instruction, make the control channel of detection can member carrier of its scheduling corresponding, this carrier indication information can be that dominant bit represents, also can adopt scrambler differentiation etc., concrete method the present invention does not limit.For the control channel of identical Signalling length corresponding to member carrier differentiation specifically which kind of form still can adopt the method increasing bit instruction.
Further, for the control channel of at least two identical Signalling length determines that corresponding search volume or the control channel at least two different Signalling length determine that the method for corresponding search volume can comprise following example respectively:
Example one, the original position determining the search volume that described control channel is corresponding and size.
Particularly, according to Signalling length mark or Signalling length group mark, the original position of the search volume that described control channel is corresponding is determined; Or according to Signalling length mark or Signalling length group mark, and in corresponding member carrier mark, subframe sequence number or the polymerization level of customer equipment identification, control channel format identification (FID), spatial division, control channel any one or multiple, determine the original position of the search volume that described control channel is corresponding.Determine in the embodiment of the present invention that the size of search volume can comprise: the size determining the search volume that the control channel of described Signalling length is corresponding according to the mode of signaling, can notify dynamically to change according to signaling; Or the size of the search volume that the control channel of this Signalling length is corresponding is determined according to the number of the control channel of certain Signalling length, it can be the mode that standard agreement is determined, such as, the size etc. of search volume is confirmed according to the control channel number of current Signalling length; Or the size of the search volume that the control channel of described Signalling length is corresponding is determined according to the algorithm determined; Or the search volume size corresponding according to often kind of polymerization level in existing LTE system determines the size of the search volume that the control channel of described Signalling length is corresponding under same polymeric level.When a search volume is distributed on a member carrier, the wherein original position of this search volume start sequence number of CCE that can comprise for search volume, the quantity of the CCE that the size of search volume can comprise for search volume.The CCE consecutive hours comprised in search volume, directly can determine search volume according to original position and size.When the CCE comprised in search volume is discontinuous, except according to except original position, size, also need to determine search volume according to discontinuous rule.Discontinuous rule can for such as: CCE sequence number is odd numbers, even numbers, difference n or other regular discontinuous forms.When a search volume is distributed on multiple member carrier, determine the original position that comprise of this search volume on each member carrier and size respectively, namely corresponding on each member carrier start sequence number of CCE and the quantity of CCE, then these CCE are superposed, this complete search volume be distributed on multiple member carrier can be obtained.
Example two, the initial ranging space corresponding according to the control channel of described Signalling length, determine the search volume that the control channel of described Signalling length is corresponding.
In example two, first need the initial ranging space determining that the control channel of described Signalling length is corresponding, in a kind of situation, the initial ranging space that the control channel of Signalling length is corresponding can also be obtained by following steps:
Determine the initial ranging space that each member carrier is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.
Now, according to any one in customer equipment identification, spatial division, member carrier mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier is corresponding can be determined.Determine in the embodiment of the present invention that the size in initial ranging space can comprise: the size determining the initial ranging space that described member carrier is corresponding according to the mode of signaling, can notify dynamically to change according to signaling; Or the size in the initial ranging space that described member carrier is corresponding is determined according to the number of control channel corresponding to member carrier, it can be the mode that standard agreement is determined, such as, according to the size etc. in control channel number determination initial ranging space corresponding to current membership's carrier wave; Or the size in the initial ranging space that described member carrier is corresponding is determined according to the algorithm determined; Or the search volume size corresponding according to often kind of polymerization level in existing LTE system determines the size in the initial ranging space that the control channel of described Signalling length is corresponding under same polymeric level.Such as: according to the number of control channel corresponding to member carrier and/or polywater equality parameter is configured or determine according to the algorithm that standard agreement specifies the initial ranging space etc. that described member carrier is corresponding.Typically, for each polymerization level, the initial ranging space that the control channel of the Signalling length that each member carrier is corresponding is corresponding is identical with the search volume of existing LTE system.Certainly compare and search volume in LTE system, also some special member carrier waves can be allowed, the initial ranging space of the control channel of the Signalling length that such as main carrier is corresponding is larger, and initial ranging space corresponding to other non-main carriers is less than the search volume of LTE system; Even other possible configurations, the needs according to system configure flexibly.The present invention does not limit.
In another kind of situation, the initial ranging space that the control channel of Signalling length is corresponding can be obtained by following steps:
Step one, determine the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding;
If at least there are two identical Signalling length in the Signalling length that the same member carrier of step 2 is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; And/or, if at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.
Now, according to Signalling length mark or Signalling length group mark, the initial ranging space original position that the control channel of each Signalling length that each member carrier is corresponding is corresponding can be determined; Or, according to any one in member carrier mark, subframe sequence number or polymerization level that Signalling length mark or Signalling length group mark and customer equipment identification, control channel format identification (FID), spatial division, control channel are corresponding or multiple, the initial ranging space original position that the control channel of each Signalling length that each member carrier is corresponding is corresponding can be determined.Determine in the embodiment of the present invention that the size in initial ranging space can comprise: the size determining the initial ranging space that the control channel of described Signalling length is corresponding according to the mode of signaling, can notify dynamically to change according to signaling; Or the size in the initial ranging space that the control channel of this Signalling length is corresponding is determined according to the number of the control channel of certain Signalling length, it can be the mode that standard agreement is determined, such as, according to the size etc. in the control channel number determination initial ranging space of current Signalling length; Or the size in the initial ranging space that the control channel of described Signalling length is corresponding is determined according to the algorithm determined; Or the search volume size corresponding according to often kind of polymerization level in existing LTE system determines the size in the initial ranging space that the control channel of described Signalling length is corresponding under same polymeric level.
In another situation, further, if the member carrier of dispatching user facility is more, or owing to supporting single user multiple-input and multiple-output (SingleUserMultiple-InputMultiple-Out-put; SU-MIMO), multi-antenna transmission, continuous and discontinuous Resourse Distribute etc., subscriber equipment may support the control channel of a variety of Signalling length in each subframe.At this moment, according to the Signalling length of control channel corresponding to member carrier, when determining search volume corresponding to control channel, can also divide into groups to described member carrier, after dividing into groups to described member carrier, the initial ranging space that the control channel of described Signalling length is corresponding can also be obtained by following steps:
Determine the initial ranging space that each member carrier group is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group.
Now, according to any one in customer equipment identification, spatial division, member carrier group mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier group is corresponding can be determined.
Wherein to the method that described member carrier divides into groups, can comprise: every a pair uplink and downlink member carrier is divided into one group; Maybe the member carrier with identical traffic pattern is divided into one group; Maybe the member carrier with same transmission bandwidth is divided into one group; Maybe the member carrier with identical traffic number of antennas is divided into one group; Also can be the combination in any of said method.The present invention does not limit the method for concrete grouping.
In example two, after determining the initial ranging space that the control channel of described Signalling length is corresponding, according to described initial ranging space, determine the concrete grammar of the search volume that the control channel of described Signalling length is corresponding, comprising:
If the Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding from other one or more member carriers is different, then the initial ranging space corresponding with the control channel of a described Signalling length, the search volume that the control channel of a described Signalling length is corresponding is identical or part is identical.Wherein, the search volume that the control channel of a Signalling length the is corresponding initial ranging space segment corresponding with the control channel of a described Signalling length is identical to be referred to: the search volume that the control channel of a Signalling length is corresponding is some subsets in the initial ranging space that the control channel of described Signalling length is corresponding, or carries out according to this subset the change increasing or reduce CCE.And/or
If a Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding with other one or more member carriers is identical, then the search volume that the control channel of a described Signalling length is corresponding is all or part of of the search volume that forms, initial ranging space that the control channel of the described Signalling length that initial ranging space that the control channel of the described Signalling length that a described member carrier is corresponding is corresponding and other one or more member carriers described are corresponding is corresponding.Wherein, the search volume that the control channel of a Signalling length is corresponding is that the part of the search volume that initial ranging space that the control channel of described Signalling length is corresponding is formed refers to: the search volume that the control channel of a Signalling length is corresponding is some subsets in all initial ranging spaces that the control channel of described Signalling length is corresponding, or carries out according to this subset the change increasing or reduce CCE.
In like manner can obtain, the method for the search volume that the control channel of the Signalling length that initial ranging space corresponding according to the control channel of Signalling length after grouping is specified is corresponding.
The present embodiment, for same polymerization level, transmitter can determine the search volume of its correspondence according to the Signalling length of control channel, be conducive to the design of search volume, blind Detecting number of times can be reduced, decrease the conflict of control channel, thus decrease the probability of control channel collision.
Make a concrete analysis of as follows: such as, when any one or the control channel of the correspondence of multiple member carrier comprises identical Signalling length time, the control channel of identical Signalling length can use identical search volume, UE is to a kind of search volume of being polymerized level and comprising, namely, when CCE resource carries out blind Detecting, one-time detection can determine whether it is the some control channels in this Signalling length.The now search volume that can use the control channel with identical Signalling length flexibly of this Signalling length, control channel can be mapped in this space flexibly, do not increase the number of times of blind Detecting, but decrease the restriction of control channel transmission, consequently reduce the collision probability of control channel.When Signalling length identical of two control channels, comprise several situation: two control channels that can be the same format that same member carrier is corresponding; Or two control channels of different-format corresponding to same member carrier, such as same member carrier format0 is different with format1A form, but Signalling length is identical; Or two control channels of same format corresponding to the different members carrier wave with same band; Or two control channels of different-format corresponding to the different members carrier wave with same band; Or there are two control channels of same format corresponding to same antenna number different members carrier wave; Or two control channels of different-format corresponding to the different members carrier wave with same antenna number; Or even through some extra process, such as: increase filling bit, reduce the indication bit granularity of Resourse Distribute (as: increase) etc. of some information, thus reduce the modes such as the bit number of Resourse Distribute use, make the control channel of two same format or different-format have identical Signalling length.The Signalling length of control channel is the principal element affecting blind Detecting number of times, because, receiving equipment needs in search volume, under the polymerization level that it is possible, blind Detecting is carried out to the various Signalling length that may occur corresponding in its search volume, when identical search volume uses for the control channel with identical Signalling length, subscriber equipment carries out some control channels that blind Detecting can know the control channel of whether corresponding all identical Signalling length in described search volume, thus the number of times of less blind Detecting reduce detection complexity.
When the Signalling length of the control channel that the control channel that any one or more member carriers are corresponding comprises is different, determine the search volume that the control channel of different Signalling length is corresponding respectively, now, the search volume that the control channel of different Signalling length is corresponding may be different.When these search volumes not overlapping and size and the control channel of different Signalling length have identical search volume size identical time, only need the control channel detecting corresponding Signalling length in the search volume that the control channel of each Signalling length described is corresponding, because this reducing the collision probability of control channel, do not increase blind Detecting number of times simultaneously.Thus, decrease the collision probability of the control channel of different Signalling length, ensure that the control channel of UE subscriber equipment effectively can be dispatched and transmit, and then ensure that the smooth transmission of data of respectively this UE subscriber equipment, improve the throughput of subscriber equipment, do not increase blind Detecting number of times simultaneously.
A kind of schematic diagram of the method that the control channel that Fig. 2 a provides for the embodiment of the present invention two maps, the another kind of schematic diagram of the method that the control channel that Fig. 2 b provides for the embodiment of the present invention two maps, as shown in Figure 2 a, the search volume that the control channel of the various Signalling length that member carrier is corresponding is corresponding is mapped on a member carrier, as shown in Figure 2 b, the search volume that the control channel of the various Signalling length that multiple member carrier is corresponding is corresponding is mapped on a member carrier.On the basis of the first embodiment of the method for control channel mapping of the present invention, control channel can be such as PDCCH, in the present embodiment and following each embodiment, is described, but the present invention is not limited to PDCCH for PDCCH.
Can the Signalling length of corresponding N kind PDCCH on a member carrier in the present embodiment, the PDCCH of this N kind Signalling length is corresponding to subscriber equipment transfer of data on one or more member carrier.
As shown in Figure 2 a, when transmitter is determined to a subscriber equipment on a member carrier during corresponding N kind Signalling length, for same polymerization level, the control channel of same member carrier corresponding at least two identical Signalling length can be made to use identical search volume; And/or, for the control channel of at least two different Signalling length corresponding to same member carrier, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.Such as: the search volume determination independently of the PDCCH of the N kind Signalling length that member carrier is corresponding.For subscriber equipment 3 (UE3), suppose the UE3 corresponding Signalling length of three kinds of PDCCH: N=3 on a member carrier, corresponding to the transfer of data of a member carrier to A (uplink and downlink member carrier A).Transmitter can be that the PDCCH of each Signalling length corresponding to the transfer of data of a member carrier to A distributes a search volume in the control channel region 20 on downlink member carrier A, be divided into and join 3 search volumes: search volume 21, search volume 22, search volume 23, in each search volume, only can carry the PDCCH of a Signalling length.
As shown in Figure 2 b, when transmitter determines that the control channel of the various Signalling length that multiple member carriers of a subscriber equipment are corresponding is mapped on a member carrier, for same polymerization level, can determine corresponding search volume for the control channel of at least two identical Signalling length corresponding to different members carrier wave, the control channel of at least two identical Signalling length described in making uses identical search volume; And/or the control channel at least two different Signalling length corresponding to different members carrier wave determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.Such as: the business datum of transmitter configuration UE 3 can be carried on member carrier and transmit on A and B, and the control channel PDCCH of transmitter configuration UE 3 all transmits on downlink member carrier A, the PDCCH that is no matter dispatching data on the downlink member carrier A of UE3 or downlink member carrier B corresponding all uses downlink member carrier A to carry.Be polymerized level for each PDCCH, transmitter can be the control channel distribution search volume of each Signalling length in the control channel region 20 on descending carrier A.Suppose N=2, a downlink member carrier A have Signalling length X, Y of 2 kinds of PDCCH, downlink member carrier B has the Signalling length X of a kind of PDCCH, then downlink member carrier A with downlink member carrier B has identical Signalling length X.Be that the PDCCH of this identical Signalling length X on two carrier waves distributes a search volume 24 in Fig. 2 b, and distribute another search volume 25 for the PDCCH of another the Signalling length Y different from X on downlink member carrier A.To sum up, can be that the PDCCH of the Signalling length that multiple member carrier is corresponding distributes search volume, such as, comprise search volume 24, search volume 25.The CCE sequence number comprised in these two search volumes can be completely different or have part identical, even also can be identical, these differences affect subscriber equipment PDCCH collision probability and in the search volume of correspondence, need PDCCH form or the Signalling length of detection.The associated exemplary of the first embodiment of the concrete method that can map with reference to control channel of the present invention.
Expansion ground, the another kind of schematic diagram of the method that the control channel that Fig. 3 provides for the embodiment of the present invention two maps, as shown in Figure 3, when transmitter is determined to the Signalling length of a subscriber equipment corresponding N kind PDCCH on P member carrier, a kind of situation, divide equally based on each polywater in all control channel regions of P member carrier for this subscriber equipment and join N number of search volume, like this, the PDCCH of often kind of Signalling length is carried in the search volume of its correspondence.Another kind of situation, when carrying the Signalling length of N kind PDCCH to a subscriber equipment on P member carrier, for this subscriber equipment can distribute M (M < N) individual search volume based on each polymerization level in all control channel regions of P member carrier, now has the corresponding same search volume of the control channel of two Signalling length at least.In figure 3, P=2, N=3, the business datum of transmitter configuration UE 4 can carry on paired uplink and downlink member carrier A, B and C to be transmitted, and the control channel PDCCH of transmitter configuration UE 4 can transmit on downlink member carrier A and downlink member carrier B, suppose that the Signalling length of the PDCCH dispatching UE4 comprises Signalling length X, Y and Z.Level is polymerized for each PDCCH, transmitter can be divided on downlink member carrier A and downlink member carrier B joins 3 search volumes, only carry the control channel of the Signalling length of a kind of PDCCH in each search volume, and the CCE number that each search volume comprises can be reconfigured by transmitter as required.Can by 2 corresponding for PDCCH Signalling length X and Y search volumes: search volume 31, search volume 32 are configured in the control channel region 30 of downlink member carrier A, are configured in the control channel region 34 of downlink member carrier B the search volume 33 of PDCCH Signalling length Z.The CCE sequence number that wherein search volume 31, search volume 32 comprise can have identical or completely not identical.Except the method, also the search volume of the Signalling length Z of PDCCH can be corresponded to the search volume 31 in the control channel region 30 of downlink member carrier A, like this, the search volume of the Signalling length Z of PDCCH can be distributed on multiple member carrier, as above example not only comprises the search volume 31 in the control channel region 30 of downlink member carrier A, can also comprise the search volume 33 in the control channel region 34 of downlink member carrier B.In sum, all CCE of a search volume can be distributed on a member carrier, also can be distributed on multiple member carrier.
In sum, for one polymerization level, the search volume that the control channel of various Signalling length is corresponding can be distributed on a member carrier, also can be distributed on multiple member carrier, CCE sequence number in search volume can be continuous print, also can be discontinuous.When the search volume that the control channel of the Signalling length of PDCCH is corresponding is distributed in a member carrier, the initial CCE sequence number obtaining search volume on this member carrier and all CCE sequence numbers comprised, just can obtain the search volume that the control channel of the Signalling length of this PDCCH is corresponding.When the search volume that the PDCCH of the Signalling length of this PDCCH is corresponding is distributed in multiple member carrier, to obtain on each member carrier the CCE sequence number comprised in corresponding search volume, and carry out these CCE superposing search volume corresponding to the PDCCH that can obtain the Signalling length of this PDCCH.If CCE sequence number always continuous print in search volume corresponding on a member carrier, according to the initial CCE sequence number of the search volume determined, and the number of CCE that this search volume comprises, the sequence number of all CCE that this search volume comprises can be known.
In the present embodiment, determine that the search volume that the PDCCH of certain Signalling length is corresponding can comprise following example:
Example one, the original position determining the search volume that the PDCCH of certain Signalling length is corresponding and size.
Wherein according to described according to Signalling length mark or Signalling length group mark, the original position of the search volume that described control channel is corresponding can be determined; Or according to Signalling length mark or Signalling length group mark, and in corresponding member carrier mark, subframe sequence number or the polymerization level of customer equipment identification, control channel format identification (FID), spatial division, control channel any one or multiple, determine the original position of the search volume that described control channel is corresponding.Wherein, Signalling length mark, Signalling length group mark can be the specific Signalling length mark of system, and namely definitely Signalling length identifies, and also can be the specific Signalling length mark of UE, namely relative Signalling length mark; The member carrier mark that control channel is corresponding also can be the specific member carrier mark of system, and namely definitely member carrier identifies, and also can be the specific member carrier mark of UE, namely relative member carrier mark.
Determine that the sequence number of the original position of search volume and the CCE of original position such as can calculate according to customer equipment identification (UEID).Because same UE may to there being different UEID on different members carrier wave, so can calculate the original position of search volume with UEID, the original position of the search volume of such different members carrier wave in same polymerization level can be different.Calculate the original position of search volume corresponding to the control channel of a UE in subframe k with UEID, such as, can be calculated by following formula (1) and formula (2).
Y k＝(A×Y k-1)modD(1)
Wherein A can be such as 39827, D can be such as 65537, iterative value Y kcan be regarded as the iterative value changed with subframe numbers k, wherein Y during k=0 -1iterative initial value, generally iterative initial value be system assignment to the UEID of subscriber equipment or be called C-RNTI, equal n rNTI, iterative initial value is not 0; L is polymerization level (aggregationlevel), N cce, kit is the total quantity of the CCE that in a kth subframe, system is transmitted for control channel; The iterative value Y of present sub-frame kthe iterative value Y by previous subframe k-1after multiplication by constants A, D delivery is obtained; So the iterative value Y of present sub-frame kit is the result that the iterative value of a front K-1 subframe is carried out interative computation and drawn; Wherein mod computing, represents delivery; Z krepresent in a kth subframe, if system is customer equipment identification is n rNTIuser equipment allocation polymerization level be the control channel of L, the start position of the search volume that described control channel is corresponding.
Transmitter distributes different UEID to different UE, and UEID not only can be used for identifying the different UEs in same community, and when calculating its search volume, can also have the effect of randomization search volume original position.This randomized method to a certain extent also can the distribution of the search volume that control channel is corresponding between randomization UE, reduces the collision of control channel between UE.
Except determining the sequence number of the initial CCE of search volume and adopting UEID calculating, can also determine the sequence number of the CCE of search volume original position together with Signalling length mark, the Signalling length of the concrete PDCCH that UE can be supported in present sub-frame identifies.Different UE is due to the number difference of the Signalling length of the PDCCH of support, and the mark that the Signalling length for same PDCCH adopts also may be different, have the specific characteristic of UE, is that the relative Signalling length that UE adopts identifies; Certainly, also the Signalling length of all PDCCH of system support can be carried out absolute identification, adopt and identify with the Signalling length of the PDCCH of the Signalling length of the PDCCH of this UE.Wherein, the Signalling length mark of the specific PDCCH of UE is used for search volume corresponding to the PDCCH of the various Signalling length of subregion, the Signalling length of the PDCCH that same UE is corresponding different has the Signalling length of different PDCCH to identify, such as: following formula (3), formula (4) can be adopted to calculate original position:
Y k＝(A×Y k-1×M k，p)modD(3)
M in formula (3), (4) k, psignalling length mark (LengthID) of the PDCCH that in subframe k, p kind control channel Signalling length is corresponding, M k, pbe not 0, the implication of other parameters is identical with formula (2) with formula (1).
As can be seen from above two examples, when introducing the another one parameter being different from UEID, as Signalling length mark or member carrier mark, when acting on the calculating of the sequence number of the initial CCE of search volume, be equal in principle and employ another one UEID in present sub-frame.To be made the Y in a certain subframe by time variations when both kthe Y corresponding with another one UEID ktime equal, because another one parameter such as Signalling length mark or the member carrier introduced identify and can not change dynamically with subframe, such as identifying for the member carrier that UE is corresponding may be semi-static change, like this, as the Y that two users in a certain subframe are corresponding ktime equal, in ensuing subframe, all Y can be caused kcontinue equal, the control channel of such two users can constant collision.The method solved can for not reallocate the another one UEID of two parameter equivalence, and this will affect the distribution method of UEID; Another selectable method may also be M k, padopt non-multiplicative (such as additive relation), so random subframe change there will not be constant collision.
Due to when utilizing the Signalling length of PDCCH mark to determine the original position of search volume, the number of all CCE distributing to control channel may be related to, so in the present embodiment, can also divide all CCE distributing to control channel further, i.e. spatial division, to determine the original position of search volume further.Such as, the all CCE distributing to PDCCH are 100, then when utilizing the Signalling length mark of PDCCH to calculate, in order to avoid result of calculation exceedes above-mentioned 100 CCE, limit calculations in these 100 CCE, such as, result of calculation can must be used 100 deliverys.Like this, the Signalling length of different PDCCH identifies the original position of the search volume calculated may be identical.In order to avoid the overlap of search volume that the control channel of the different Signalling length of UE is corresponding further, all CCE can be divided into two groups, the search space partition by the whole PDCCH of distributing to is two.Can only be positioned at first space dividing and obtain in restricted part search volume like this, other search volumes can only be positioned at second space dividing and obtain.In order to better avoid the collision of control channel, search volume can be divided according to the number of the Signalling length of PDCCH or kind.Such as: the Signalling length of a total N number of PDCCH, be then N number of by the whole search space partition distributing to control channel, then the search volume of the Signalling length of each PDCCH can only in the defined basis of correspondence, the CCE making search volume corresponding to the PDCCH of different Signalling length comprise like this is not overlapping, when not changing blind Detecting number of times, the PDCCH mapping area of the multiple Signalling length that UE is corresponding is different, can reduce the collision of control channel; Certainly, also can distribute a CCE region for the PDCCH of multiple Signalling length, the CCE that search volume corresponding to the PDCCH of some Signalling length is comprised is overlapping.Such as: the original position of the search volume that the control channel of a UE in subframe k is corresponding, can be calculated by following formula (5) and formula (6).
Y k＝(A*Y k-1)modD(5)
In formula (5) and formula (6), N is whole control channel spatial division is N number of space number; N is the Signalling length of n-th kind of control channel, and generally n <=N, the implication of other parameters is identical with formula (2) with formula (1).
The size of search volume refers to the number of the CCE that this search volume comprises, and the size of search volume can, for what fix, also can be what change.The size of the search volume that the control channel of described Signalling length is corresponding can be determined, such as: change dynamically according to signaling according to the mode of signaling.Or the size of the search volume that the control channel of described Signalling length is corresponding is determined according to the number of control channel, it can be the mode that standard agreement is determined, such as: adopt standard agreement to determine search volume size, such as, the size etc. of search volume is confirmed according to the control channel number of current Signalling length; Or the size of the search volume that the control channel of described Signalling length is corresponding is determined according to the algorithm determined; Or the search volume size corresponding according to often kind of polymerization level in existing LTE system determines the size of the search volume that the control channel of described Signalling length is corresponding under same polymeric level.
Example two, the initial ranging space corresponding according to the control channel of described Signalling length, determine the search volume that the control channel of described Signalling length is corresponding, and situation about specifically comprising and step can with reference to the associated description of the embodiment of the present invention one.Such as: the schematic diagram of control channel search volume defining method in the method that the control channel that Fig. 4 provides for the embodiment of the present invention two maps, as shown in Figure 4, member carrier comprises the uplink member carrier S of downlink member carrier S and its correspondence to S, member carrier is to the corresponding Signalling length A of S, C, label in corresponding downlink member carrier S (PDCCH carrier wave S) in the initial ranging space that this two kinds of Signalling length A, C are corresponding is the region of 41; Namely member carrier comprises the uplink member carrier T of downlink member carrier T and its correspondence to T, the corresponding Signalling length A of uplink member carrier T, B, label in corresponding downlink member carrier T (PDCCH carrier wave T) in the initial ranging space that the control channel of this two kinds of Signalling length A, B is corresponding is the region of 42.All a unique Signalling length for member carrier to Signalling length C corresponding to S and the member carrier Signalling length B corresponding to T, so, for member carrier to search volume corresponding to the control channel of Signalling length C corresponding to S and the member carrier control channel to Signalling length B corresponding to T with each self-corresponding initial ranging space is identical or part is identical, such as: the search volume size that the control channel of member carrier to Signalling length C corresponding to S is corresponding is its initial ranging space 41, the search volume size that the control channel of member carrier to Signalling length B corresponding to T is corresponding is its initial ranging space 42.In addition, member carrier is identical to the Signalling length A that T is corresponding with member carrier to the Signalling length A that S is corresponding, the search volume that member carrier is corresponding to Signalling length A corresponding to S and the member carrier control channel to Signalling length A corresponding to T can be identical, and the size of search volume can be: search volume corresponding to the control channel of this Signalling length A can be some or all of to the initial ranging space of Signalling length A corresponding to S and T of member carrier.Such as, adopt the whole of initial ranging space, concrete be expressed as the complete or collected works of member carrier to the initial ranging space of its correspondence of search volume corresponding to Signalling length A corresponding to S and the member carrier control channel to Signalling length A corresponding to T, i.e. initial ranging space 41 and initial ranging space 42.In addition, to be member carrier refer to the part in the initial ranging space of Signalling length A corresponding to T the control channel of member carrier to Signalling length A corresponding to S: the initial ranging space corresponding according to some subsets of the control channel of this Signalling length A increases or reduce the change of the CCE comprised.Wherein, determine that the method in initial ranging space can be divided into multiple situation.In a kind of situation, determine the initial ranging space that each member carrier is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.Now, according to any one in customer equipment identification, spatial division, member carrier mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier is corresponding can be determined.In another kind of situation, determine the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding; If at least there are two identical Signalling length in the Signalling length that same member carrier is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; If and/or at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.Now, according to Signalling length mark or Signalling length group mark, the original position in the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding is determined; Or according to any one in corresponding member carrier mark, subframe sequence number or the polymerization level of Signalling length mark or Signalling length group mark and customer equipment identification, control channel format identification (FID), spatial division, control channel or multiple, determine the original position in the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding.In another situation, after described member carrier is divided into groups, determine the initial ranging space that each member carrier group is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group.Now, according to any one in customer equipment identification, spatial division, member carrier group mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier group is corresponding is determined.Determine the concrete grammar of the original position in initial ranging space, can with reference to above-mentioned formula (1) to (6) with relevant to describe, only needing to revise corresponding parameter can realize.In addition, can describe with reference to being correlated with in the embodiment of the present invention one method that member carrier divides into groups.
Further, in the present embodiment, for each polymerization level, the CCE that the search volume that the described control channel determined according to control channel Signalling length is corresponding comprises can be discontinuous, it can be continuous print, can be distributed on a carrier wave, also can distribute over a number of carriers.In the discontinuous situation of CCE, obtain the discontinuous rule of CCE.
Further, in the present embodiment, for each polymerization level, position relationship between the control channel of the different Signalling length determined can be discontinuous, can be continuous print, can be completely nonoverlapping, also can partly overlap or complete overlap.
In the present embodiment, when determining search volume corresponding to control channel that member carrier is corresponding, according to the Signalling length of control channel, the position relationship between search volume can be determined, comprise following example:
If the Signalling length of the control channel that example one different members carrier wave is corresponding is identical, then determine that search volume that member carrier that described Signalling length is identical is corresponding is completely overlapping or partly overlap, described control channel comprises the carrier indication information being used to indicate different members carrier wave.
Wherein, when search volume is completely overlapping, the original position of the search volume that the member carrier that corresponding control channel Signalling length is identical is corresponding is identical, and size is also identical; When search volume partly overlaps, in the search volume that the member carrier that corresponding control channel Signalling length is identical is corresponding, at least comprise an identical CCE.Because the Signalling length of the complete overlap in search volume or control channel corresponding to partly overlapping member carrier is identical, so make search volume overlap can reduce the number of times of blind Detecting to a great extent.Such as: when a pair uplink and downlink member carrier A is identical with the data-transmission mode of member carrier B, dispatch the Signalling length of each carrier wave to the corresponding PDCCH of upper transfer of data identical, at this moment, the CCE sequence number that preferably two search volumes can be comprised is identical, in this case can think to only have a search volume, the PDCCH that two carrier waves are corresponding can be carried on any one position in this search volume, increase the flexibility that control channel is placed, but blind Detecting number of times does not increase because the Signalling length of PDCCH of its scheduling multicarrier is identical.Now need which carrier wave that carrier indication information represents scheduling in each PDCCH, carrier indication information can realize by having in the scrambler of carrier wave customizing messages or PDCCH a word territory display instruction.Suppose that search volume corresponding to each polymerization level is M, if during the Signalling length of the corresponding two kinds of PDCCH of a kind of transmission mode, in the M of search volume, subscriber equipment needs 2M blind Detecting.The control channel search volume of the Signalling length that different members carrier wave is corresponding is completely overlapping or when partly overlapping, and can be reached the object reducing control channel and conflict by the size increasing search volume.Such as, when being 8 CCE for polymerization level, in existing scheme, search volume is 16 CCE, in order to reduce the conflict of control channel, the size of search volume corresponding to the control channel of Signalling length can be made to be greater than 16 CCE, such as, comprise 32 CCE.
If the Signalling length of the control channel that example two different members carrier wave is corresponding is different, then determine that the search volume that the different member carrier of described Signalling length is corresponding is not overlapping.
Such as: when uplink and downlink member carrier is not identical to the data-transmission mode of B with member carrier to A, namely dispatching the Signalling length of each member carrier to the corresponding PDCCH of upper transfer of data may not be identical, each member carrier is configured according to the needs of himself transmission characteristic, and each member carrier is to the Signalling length with different several PDCCH.At this moment, the CCE sequence number that preferably two search volumes can be comprised is completely not identical, in this case can think that member carrier has to A, B the independently search volume that the control channel of respective carrier signalling length is corresponding, two member carriers only can be carried in each self-corresponding search volume the PDCCH of correspondence and transmit.Like this, which member carrier pair of scheduling in PDCCH, can be represented without the need for information, by which member carrier of member carrier to the information instruction scheduling of specific search volume, thus save the signaling consumption of PDCCH.Suppose that a search volume corresponding to each polymerization level is M.If a during Signalling length of the corresponding two kinds of PDCCH of transmission mode, in the M of search volume, subscriber equipment needs M blind Detecting in each search volume, but subscriber equipment altogether needs M+M=2M blind Detecting in two search volumes.When search volume is not overlapping, the number of times of blind Detecting can not be reduced, but the size of search volume suitably can be reduced or keep identical with the size of the search volume in LTE system.
When for same polymerization level, when the search volume that the control channel of different members carrier wave is corresponding is not overlapping, the carrier indication information of member carrier no longer can be transmitted, such as identifying information, carrier index.This is due to for same polymerization level, and the search volume of different members carrier wave is not overlapping, and make UE detect that PDCCH just can know in certain specific search volume, this PDCCH is corresponding with the member carrier that correspond to this search volume.And work as same polymerization level, the search volume that the control channel of different members carrier wave is corresponding partly overlap or overlapping time, just need transmission member carrier identifying information, correspond to which member carrier with the PDCCH making UE can learn that this UE detects in a certain search volume.
Example three, determine that the search volume that the control channel of the Signalling length that described member carrier is corresponding is corresponding partly overlaps.
Can adopt the method in example one that search volume corresponding to the control channel of Signalling length corresponding to above-mentioned member carrier is only partly overlapped in some cases, at this moment the collision of control channel can not only be reduced, also can the number of times of minimizing blind Detecting to a certain extent.In addition, in this example three, these two identical Signalling length or search volume corresponding to the control channel of different Signalling length can determine namely independently, do not have dependence Sum fanction respectively.Such as: the different Signalling length marks that search volume corresponding to the control channel of two different Signalling length can be corresponding according to two different Signalling length are respectively determined, or determine according to the control channel place member carrier mark of two different Signalling length respectively, or the correlative of comprehensive above any one or multiple combination is determined, or/and, search volume corresponding to the control channel of two not identical same Signalling length also can be corresponding according to two not identical same Signalling length respectively the identical Signalling length mark of difference determine, or determine according to the control channel place member carrier mark of two identical Signalling length of difference respectively, or the correlative of comprehensive above any one or multiple combination is determined, in a word, the embodiment of the present invention does not limit the selection of concrete identification parameter, like this, simultaneously, the search volume that the control channel of these two identical Signalling length or the two kinds of different Signalling length in search volume corresponding to the control channel of different Signalling length is corresponding may be identical, also may be different, namely the search volume that the control channel of the Signalling length that member carrier is corresponding is corresponding may be only partly overlapping, by determining that the randomization of the parameter role of search volume in search volume defining method determines, or its method independently determined, the present invention does not limit.
Further, search volume corresponding for the control channel of at least one corresponding for subscriber equipment Signalling length of specifying can be set to the preferential search volume detected by transmitter, and is set to search volume corresponding for the control channel of other corresponding for this subscriber equipment non-designated Signalling length expand the search volume detected.Member carrier due to Bearer Control channel can be preferably the main carrier of subscriber equipment, main carrier is the member carrier of the detection that the subscriber equipment needs being in connection status continue, the channel condition of main carrier relatively can be relatively good, like this, the transmission performance of the PDCCH that subscriber equipment is corresponding is good, therefore using the Signalling length of those corresponding for main carrier PDCCH as the Signalling length of specifying, search volume corresponding for the control channel of the Signalling length of those corresponding for main carrier PDCCH can be set to the preferential search volume detected.In addition, also more number of times can be occurred and be set to the preferential search volume detected with the search volume that the control channel of the Signalling length of the PDCCH of greater probability appearance is corresponding, and the control channel of the Signalling length of other PDCCH is set to expand the search volume detected.Specify in agreement, how to determine preferentially to detect search volume and expansion detection search volume, and preferential detect search volume and expansion and detect the information such as Signalling length, form that search volume comprises, receiving-transmitting sides can be specifically derived or transmitting terminal can be comprised by proprietary signaling receiving equipment, concrete proprietary signaling: the control channel etc. of high-rise semi-static signaling, physical layer dynamic signaling, Medium Access Layer according to the algorithm of standard agreement.
The control channel of the Signalling length of the PDCCH that transmitter priority scheduling main carrier is corresponding; Or priority scheduling is with more number of times appearance and with the control channel of the Signalling length of the PDCCH of greater probability appearance; Or the control channel of the Signalling length of PDCCH that other modes are determined carries out transmission data.In addition, the search volume that the search volume of preferential detection and expansion detect can not be overlapping or overlapping, if not overlapping, for one polymerization level, namely the search volume that the control channel of the Signalling length of PDCCH is corresponding is the preferential search volume detected and all CCE sequence numbers expanding the search volume detected; If overlapping, the search volume that the control channel of PDCCH Signalling length is corresponding is all CCE sequence numbers that the preferential search volume detected or the search volume expanding detection comprise.
In LTE, some is needed to the subscriber equipment of monitoring control channel, the public search space corresponding at least one member carrier all will carry out blind Detecting.So, when public search space has remaining CCE resource to may be used for the only PDCCH mapping and transmit this subscriber equipment, the PDCCH of subscriber equipment can be carried in this public search space and transmit.Now, when public search space has not had remaining CCE resource to may be used for the PDCCH mapping and transmit this subscriber equipment, by the Signalling length of those corresponding for subscriber equipment main carrier PDCCH; Or to occur with more number of times and in the Signalling length of the PDCCH occurred with greater probability, only one or multiple PDCCH are carried on preferential detection in search volume and transmit; If also there is the Signalling length of other PDCCH, then the PDCCH of the Signalling length of other PDCCH is carried on expansion and detects in search volume and carry out mapping and transmitting.
In the present embodiment, the Signalling length of multiple control channels that the PDSCH of the PUSCH that transmitter is dispatched according to multiple uplink member carrier on or several downlink member carrier and/or the scheduling of multiple downlink member carrier is corresponding can distribute multiple search volume.The control channel of each Signalling length can be mapped in the search volume distributed, for transmitter, search volume is the CCE region that transmitter can map PDCCH, and for receiving equipment, search volume is the CCE region of the determination of receiving equipment blind Detecting control channel.The kind of the Signalling length of the control channel that transmitter may transmit within a period of time according to subscriber equipment, independently search volume can be distributed for the control channel of often kind/several formats, these search volumes can be distributed on one or several member carrier, and the number that the size of search volume can occur according to the corresponding often kind of Signalling length of subscriber equipment and/or probability are configured, or the initial ranging space corresponding according to each member carrier changes, search volume corresponding to the control channel of often kind of Signalling length and the CCE number that comprises thereof are changed according to demand on one or several member carrier.Such as: when the number that the PDCCH of some Signalling length occurs and/or probability more time, increase the CCE number that its corresponding search volume comprises, the number that can hold transmitting control channel like this increases, and can reduce collision probability when transmitting with other subscriber equipment control channels.Otherwise, when the number that the PDCCH of some Signalling length occurs and/or probability less time, the CCE number configuration that its search volume comprises is less, resource like this for transmitting control channel is less, reduce the number of times of subscriber equipment blind Detecting control channel, reduce the complexity of subscriber equipment process, save the consumption of battery electric quantity.
In the present embodiment, member carrier also can replace with member carrier to, member carrier group, member carrier collection or member carrier to set, described member carrier mark can replace with member carrier to mark, member carrier group mark, member carrier collection mark or member carrier to set identification.Therefore, to the description of member carrier be equally applicable to member carrier to, member carrier group, member carrier collection or member carrier be to set.Such as, when member carrier is more, in order to reduce the complexity that the number of search volume and subscriber equipment detect, can by member carrier or member carrier to dividing into groups, often group is a member carrier collection.Now member carrier can replace with member carrier collection.
The flow chart of the method that the control channel that Fig. 5 provides for the embodiment of the present invention three detects, as shown in Figure 5, the method that this control channel detects comprises the following steps:
Step 51, for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume.
Step 52, in the described identical search volume determined, detect the control channel of the Signalling length that described identical search volume comprises.
Wherein, make the control channel of at least two identical Signalling length use identical search volume, specifically comprise: make the control channel of different members carrier wave corresponding at least two identical Signalling length use identical search volume; Or make the control channel of same member carrier corresponding at least two identical Signalling length use identical search volume.
Method when above-mentioned step 51 and step 52 are the control channel of one or more member carrier existence at least two identical Signalling length, when there is one or more member carrier and there is the control channel of at least two different Signalling length, step 51 and step 52 also can be following or perform together with following steps:
For same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, the control channel of at least two different Signalling length described at least one time tranfer unit is made to use different search volumes, in the described different search volume determined, detect the control channel of the Signalling length that described different search volume comprises.
Wherein for the control channel of at least two different Signalling length determines corresponding search volume respectively, the control channel of at least two different Signalling length described at least one time tranfer unit is made to use different search volumes, specifically comprise: be the control channel of at least two different Signalling length corresponding to different members carrier wave, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; Or be the control channel of at least two different Signalling length that same member carrier is corresponding, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.
User equipment (UE), when detection control channel, according to the Signalling length of control channel corresponding to member carrier, determines that the method for the search volume that control channel is corresponding specifically comprises following example:
Example one, subscriber equipment determine original position and the size of the search volume that described control channel is corresponding, wherein, the method of the original position of the search volume that subscriber equipment determination control channel is corresponding is: according to Signalling length mark or Signalling length group mark, determine the original position of the search volume that described control channel is corresponding; Or according to Signalling length mark or Signalling length group mark, and in corresponding member carrier mark, subframe sequence number or the polymerization level of customer equipment identification, control channel format identification (FID), spatial division, control channel any one or multiple, determine the original position of the search volume that described control channel is corresponding.Specifically can with reference to the associated description determining search volume original position, size in the embodiment of the present invention one, two.
The initial ranging space that example two, subscriber equipment are corresponding according to the control channel of described Signalling length, determines the search volume that the control channel of described Signalling length is corresponding.
Wherein, the method in the initial ranging space that the control channel of subscriber equipment determination Signalling length is corresponding, can be divided into multiple situation.
In a kind of situation, the initial ranging space that the control channel of described Signalling length is corresponding is obtained by following steps:
Determine the initial ranging space that each member carrier is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.
Now, according to any one in customer equipment identification, spatial division, member carrier mark, subframe sequence number or polymerization level or multiple, the initial ranging space that each member carrier is corresponding is determined.
In another kind of situation, the initial ranging space that the control channel of described Signalling length is corresponding is obtained by following steps:
Step one, determine the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding;
If at least there are two identical Signalling length in the Signalling length that the same member carrier of step 2 is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; If and/or at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.
Now, according to Signalling length mark or Signalling length group mark, the initial ranging space original position that the control channel of each Signalling length that each member carrier is corresponding is corresponding can be determined; Or according to any one in corresponding member carrier mark, subframe sequence number or the polymerization level of Signalling length mark or Signalling length group mark and customer equipment identification, control channel format identification (FID), spatial division, control channel or multiple, the initial ranging space original position that the control channel of each Signalling length that each member carrier is corresponding is corresponding can be determined.
In another situation, if divided into groups to described member carrier, the initial ranging space that the control channel of described Signalling length is corresponding is obtained by following steps:
Determine the initial ranging space that each member carrier group is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group.
Now, according to any one in customer equipment identification, spatial division, member carrier group mark, subframe sequence number or polymerization level or multiple, the initial ranging space that each member carrier group is corresponding is determined.
After subscriber equipment determines initial ranging space corresponding to the control channel of Signalling length, the initial ranging space corresponding according to the control channel of described Signalling length, determine that the method for the search volume that the control channel of described Signalling length is corresponding is:
If the Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding from other one or more member carriers is different, then the initial ranging space corresponding with the control channel of a described Signalling length, the search volume that the control channel of a described Signalling length is corresponding is identical or part is identical; And/or
If a Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding with other one or more member carriers is identical, then the search volume that the control channel of a described Signalling length is corresponding is all or part of of the search volume that forms, initial ranging space that the control channel of the described Signalling length that initial ranging space that the control channel of the described Signalling length that a described member carrier is corresponding is corresponding and other one or more member carriers described are corresponding is corresponding.Wherein, wherein, the search volume that the control channel of a Signalling length is corresponding is that the part of the search volume that initial ranging space that the control channel of described Signalling length is corresponding is formed refers to: the search volume that the control channel of a Signalling length is corresponding is some subsets in all initial ranging spaces that the control channel of described Signalling length is corresponding, or carries out according to this subset the change increasing or reduce CCE.
Subscriber equipment in the search volume determined, can carry out blind Detecting to the control channel of the Signalling length that described search volume comprises after determining according to Signalling length the search volume that corresponding control channel is corresponding.
Further, preferentially detect search volume if be mapped to by the control channel of the Signalling length of specifying in the method for control channel mapping, the control channel of non-designated Signalling length is mapped to expansion and detects search volume.Then corresponding, the control channel that there is the Signalling length of specifying in search volume is detected if preferential, then extension of detecting capability detects the control channel whether search volume exists non-designated Signalling length, otherwise extension of detecting capability does not detect the control channel whether search volume exists non-designated Signalling length.
Particularly, subscriber equipment, when blind Detecting control channel, except detecting public search space, first can confirm preferentially to detect in search volume whether there is Signalling length corresponding to this subscriber equipment.If subscriber equipment detects preferential the control channel detecting the Signalling length of oneself in search volume, continuation is detected search volume in expansion and detects by subscriber equipment.Until just stop behind the search volume of the complete all needs detection of blind Detecting.And if subscriber equipment at the preferential control channel Signalling length of oneself not detected in search volume that detects, then this subscriber equipment can not continue extension of detecting capability and detect search volume, directly stop detecting.
Control channel in the present embodiment can be such as PDCCH, but the embodiment of the present invention is not limited to PDCCH.And the description embodiment that the Signalling length of the present embodiment control channel is example is applicable to form set or the Signalling length set of control channel equally.
In the present embodiment, subscriber equipment can according to original position, the size of the determination search volume of the control channel of Signalling length, then detect in the search volume determined, because the original position of search volume, size in network side flexible configuration, can reduce the probability of control channel collision.In addition, distinguish and preferentially detect search volume, expansion detects search volume, subscriber equipment can be avoided in all search volumes to carry out unnecessary blind Detecting, decrease the number of times of subscriber equipment blind Detecting control channel, and then save the consumption of subscriber equipment power, also avoid too much blind Detecting Problem-Error.
The structural representation of the transmitter that Fig. 6 provides for the embodiment of the present invention four, as shown in Figure 6, this transmitter comprises the first processing module 61 and/or the second processing module 62.Wherein, first processing module 61 comprises: the first search volume determination module 611, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume; And first mapping block 612, for the control channel of described at least two identical Signalling length being mapped to the search volume of the correspondence that the first search volume determination module 611 is determined;
Second processing module 62 comprises: the second search volume determination module 621, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; And second mapping block 622, for the control channel of described at least two different Signalling length being mapped to respectively the search volume of the correspondence that the second search volume determination module 621 is determined.
Further, the first search volume determination module 611 can comprise: the first determining unit 6111 or the second determining unit 6112.
Wherein, first determining unit 6111, for the Signalling length according to control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, makes the control channel of different members carrier wave corresponding at least two identical Signalling length use identical search volume.Second determining unit 6112, for the Signalling length according to control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, makes the control channel of same member carrier corresponding at least two identical Signalling length use identical search volume.
Second search volume determination module 621 comprises: the 3rd determining unit 6211 or the 4th determining unit 6212.
Wherein, 3rd determining unit 6211, for the control channel at least two different Signalling length corresponding to different members carrier wave, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.4th determining unit 6212, for the control channel at least two different Signalling length corresponding to same member carrier, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.
Further, the first search volume determination module 611 and/or the second search volume determination module 621 can also comprise: position determination unit 63 and/or initial ranging space cell 64.Wherein position determination unit 63, for determining original position and the size of the search volume that described control channel is corresponding.Initial ranging space cell 64, for the initial ranging space corresponding according to the control channel of described Signalling length, determines the search volume that the control channel of described Signalling length is corresponding.
Wherein, position determination unit 63 comprises:
Original position determination subelement 631, for according to Signalling length mark or Signalling length group mark, determines the original position of the search volume that described control channel is corresponding; Or according to Signalling length mark or Signalling length group mark, and in corresponding member carrier mark, subframe sequence number or the polymerization level of customer equipment identification, control channel format identification (FID), spatial division, control channel any one or multiple, determine the original position of the search volume that described control channel is corresponding.Concrete grammar can with reference to the associated description in the embodiment of the present invention one, two.
Initial ranging space cell 64 comprises: the first initial ranging space subelement 641, second initial ranging space subelement 642 or the 3rd initial ranging space subelement 643, also comprises the 4th initial ranging space subelement 644.
Wherein the first initial ranging space subelement 641, for determining the initial ranging space that each member carrier is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.
Second initial ranging space subelement 642, for determining the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding; If at least there are two identical Signalling length in the Signalling length that same member carrier is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; If and/or at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.
3rd initial ranging space subelement 643, after described member carrier is divided into groups, determine the initial ranging space that each member carrier group is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group.
4th initial ranging space subelement 644, if different for the Signalling length of a Signalling length of control channel corresponding to member carrier control channel corresponding from other one or more member carriers, then the initial ranging space corresponding with the control channel of a described Signalling length, the search volume that the control channel of a described Signalling length is corresponding is identical or part is identical; If and/or a Signalling length of a Signalling length of control channel corresponding to member carrier control channel corresponding with other one or more member carriers is identical, then the search volume that the control channel of a described Signalling length is corresponding is all or part of of the search volume that forms, initial ranging space that the control channel of the described Signalling length that initial ranging space that the control channel of the described Signalling length that a described member carrier is corresponding is corresponding and other one or more member carriers described are corresponding is corresponding
Particularly, initial ranging space cell 64, according to the method in initial ranging space corresponding to the control channel of Signalling length, can comprise multiple situation:
The initial ranging space that each member carrier is corresponding determined by situation one, first initial ranging space subelement 641, and the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.
Now, according to any one in customer equipment identification, spatial division, member carrier mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier is corresponding can be determined.
The initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding determined by situation two, second initial ranging space subelement 642; If at least there are two identical Signalling length in the Signalling length that same member carrier is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; If and/or at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.
Now, according to Signalling length mark or Signalling length group mark, the original position in the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding can be determined; Or according to any one in corresponding member carrier mark, subframe sequence number or the polymerization level of Signalling length mark or Signalling length group mark and customer equipment identification, control channel format identification (FID), spatial division, control channel or multiple, determine the original position in the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding.
The initial ranging space that each member carrier group is corresponding determined by situation three, the 3rd initial ranging space subelement 643, and the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group.When situation three, this transmitter can also comprise grouped element, for dividing into groups to described member carrier.The method of wherein dividing into groups can include but not limited to: every a pair uplink and downlink member carrier is divided into one group; Maybe the member carrier with identical traffic pattern is divided into one group; Maybe the member carrier with same transmission bandwidth is divided into one group; Maybe the member carrier with identical traffic number of antennas is divided into one group etc.
Now, according to any one in customer equipment identification, spatial division, member carrier group mark, subframe sequence number or polymerization level or multiple, the original position in the initial ranging space that each member carrier group is corresponding can be determined.
In the present embodiment, initial ranging space cell determines the concrete grammar in the initial ranging space that the control channel of described Signalling length is corresponding, can with reference to the associated description in the embodiment of the present invention one, two.
After initial ranging space cell 64 determines the initial ranging space that the control channel of described Signalling length is corresponding, the initial ranging space that 4th initial ranging space subelement 644 is corresponding according to the control channel of described Signalling length, determine specifically to comprise the search volume that the control channel of described Signalling length is corresponding:
If the Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding from other one or more member carriers is different, then the initial ranging space corresponding with the control channel of a described Signalling length, the search volume that the control channel of a described Signalling length is corresponding is identical or part is identical; And/or
If a Signalling length of the control channel that a Signalling length of the control channel that member carrier is corresponding is corresponding with other one or more member carriers is identical, then the search volume that the control channel of a described Signalling length is corresponding is all or part of of the search volume that forms, initial ranging space that the control channel of the described Signalling length that initial ranging space that the control channel of the described Signalling length that a described member carrier is corresponding is corresponding and other one or more member carriers described are corresponding is corresponding.Specifically can with reference to the associated description in the embodiment of the present invention one, two.
Again further, search volume corresponding for the control channel of non-deterministic Signalling length also for search volume corresponding for the control channel of the Signalling length determined being set to the preferential search volume detected, is set to expand the search volume detected by the first search volume determination module 611 and/or the second search volume determination module 621.
The transmitter that the present embodiment provides is for same polymerization level, and the Signalling length according to control channel can arrange different search volumes, can decrease the conflict of control channel.And, transmitter can also make search volume corresponding to the control channel of the Signalling length that correspond to identical control channel overlap or partly overlap, to reduce the number of times of UE blind Detecting, or make the control channel search volume that correspond to different Signalling length not overlapping, with the Signalling length that implicit expression notice this search volume of UE is corresponding, to save signaling consumption.And search volume corresponding for the control channel of the Signalling length determined can also be mapped to and preferentially detect search volume by transmitter, to make UE can preferentially in the search volume that the control channel of the Signalling length determined is corresponding, detection control channel, reduces blind Detecting number of times.
The structural representation of the receiving equipment that Fig. 7 provides for the embodiment of the present invention five, as shown in Figure 7, this receiving equipment comprises: the first processing module 71 and/or the second processing module 72.Wherein, first processing module 71 comprises: the first search volume determination module 711, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, and described in making, the control channel of at least two identical Signalling length uses identical search volume; And first detection module 712, in the described identical search volume that the first search volume determination module 711 is determined, detect the control channel of the Signalling length that described identical search volume comprises;
Second processing module 72 comprises: the second search volume determination module 721, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, control channel at least two different Signalling length determines corresponding search volume respectively, makes the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes; And second detection module 722, in the described different search volume that the second search volume determination module 721 is determined, detect the control channel of the Signalling length that described different search volume comprises respectively.
Further, the first search volume determination module 711 can also comprise: the first determining unit 7111 or the second determining unit 7112.
Wherein, first determining unit 7111, for the Signalling length according to control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, makes the control channel of different members carrier wave corresponding at least two identical Signalling length use identical search volume.Second determining unit 7112, for the Signalling length according to control channel corresponding to member carrier, control channel at least two identical Signalling length determines corresponding search volume, makes the control channel of same member carrier corresponding at least two identical Signalling length use identical search volume.
Second search volume determination module 721 comprises: the 3rd determining unit 7211 or the 4th determining unit 7212.
Wherein, 3rd determining unit 7211, for the control channel at least two different Signalling length corresponding to different members carrier wave, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.4th determining unit 7212, for the control channel at least two different Signalling length corresponding to same member carrier, determine corresponding search volume respectively, make the control channel of at least two different Signalling length described at least one time tranfer unit use different search volumes.
First search volume determination module 711 and/or described second search volume determination module 721 can also comprise: position determination unit 73 and/or initial ranging space cell 74.
Wherein, position determination unit 73, for determining original position and the size of the search volume that described control channel is corresponding.Initial ranging space cell 74, for the initial ranging space corresponding according to the control channel of described Signalling length, determines the search volume that the control channel of described Signalling length is corresponding.Specifically can with reference to the associated description of the embodiment of the present invention one, two.
Further, position determination unit 73 comprises:
Original position determination subelement 731, for according to Signalling length mark or Signalling length group mark, determines the original position of the search volume that described control channel is corresponding; Or according to Signalling length mark or Signalling length group mark, and in corresponding member carrier mark, subframe sequence number or the polymerization level of customer equipment identification, control channel format identification (FID), spatial division, control channel any one or multiple, determine the original position of the search volume that described control channel is corresponding.
Initial ranging space cell 74 comprises: the first initial ranging space subelement 741, second initial ranging space subelement 742 or the 3rd initial ranging space subelement 743, also comprises the 4th initial ranging space subelement 744.
Wherein the first initial ranging space subelement 741, for determining the initial ranging space that each member carrier is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier is corresponding is corresponding is the initial ranging space of described same member carrier.
Second initial ranging space subelement 742, for determining the initial ranging space that the control channel of each Signalling length that each member carrier is corresponding is corresponding; If at least there are two identical Signalling length in the Signalling length that same member carrier is corresponding, then described in making, the control channel of at least two identical Signalling length uses identical initial ranging space; If and/or at least there are two different Signalling length in Signalling length corresponding to same member carrier, then to make described at least one time tranfer unit the control channel of at least two different Signalling length use different initial ranging spaces.
3rd initial ranging space subelement 743, after described member carrier is divided into groups, determine the initial ranging space that each member carrier group is corresponding, the initial ranging space that wherein control channel of each Signalling length that same member carrier group is corresponding is corresponding is the initial ranging space of described same member carrier group; With
4th initial ranging space subelement 744, if different for the Signalling length of a Signalling length of control channel corresponding to member carrier control channel corresponding from other one or more member carriers, then the initial ranging space corresponding with the control channel of a described Signalling length, the search volume that the control channel of a described Signalling length is corresponding is identical or part is identical; If and/or a Signalling length of a Signalling length of control channel corresponding to member carrier control channel corresponding with other one or more member carriers is identical, then the search volume that the control channel of a described Signalling length is corresponding is all or part of of the search volume that forms, initial ranging space that the control channel of the described Signalling length that initial ranging space that the control channel of the described Signalling length that a described member carrier is corresponding is corresponding and other one or more member carriers described are corresponding is corresponding.
Further, after the first search volume determination module 711 is according to the search volume that Signalling length determination control channel is corresponding, first detection module 712 also for: in the described identical search volume determined, blind Detecting is carried out to the control channel of the Signalling length that described identical search volume comprises.After the second search volume determination module is according to the search volume that Signalling length determination control channel is corresponding, second detection module also for: in the described different search volume determined, blind Detecting is carried out to the control channel of the Signalling length that described different search volume comprises.
In addition, when comprising preferential detection search volume in search volume, if there is the control channel of the Signalling length determined in the preferential search volume detected, then whether the search volume that first detection module 712 and/or the second detection module 722 extension of detecting capability detect exists the control channel of non-deterministic Signalling length; If there is not the control channel of the Signalling length determined in the preferential search volume detected, then whether first detection module 712 and/or the second detection module 722 search volume that extension of detecting capability does not detect exists the control channel of non-deterministic Signalling length.
Receiving equipment in the present embodiment can be UE.The present embodiment receiving equipment is for same polymerization level, and the Signalling length according to control channel can determine search volume, and in search volume the concrete grammar of detection control channel, can with reference to the associated description in the embodiment of the present invention one.
The present embodiment, the receiving equipment provided, for same polymerization level, can determine search volume according to the Signalling length of control channel, thus detect the control channel of this Signalling length in this search volume.And because the search volume that the member carrier that the Signalling length of the control channel of correspondence is identical is corresponding can be overlapping or partly overlapping, so the number of times of UE blind Detecting can reduce.And UE preferentially detects search volume corresponding to the control channel of the Signalling length determined, also can reduce the number of times of blind Detecting further.
Finally it should be noted that, one of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (ROM) or random store-memory body (RAM) etc.
Each functional unit in the embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Above-mentioned specific embodiment is not in order to limit the present invention; for those skilled in the art; under the premise without departing from the principles of the invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (20)

1. a method for control channel mapping, is characterized in that, comprising:
For same polymerization level, the network equipment determines that at least two control channels with identical Signalling length and at least two have the control channel of different Signalling length;
According to the Signalling length of control channel corresponding to member carrier, the described network equipment for described at least two control channels with identical Signalling length determine the first search volume, wherein, the first search volume of the control channel use of described at least two identical Signalling length is identical;
In at least one time tranfer unit, according to the Signalling length of control channel corresponding to member carrier, the described network equipment for described at least two control channels with different Signalling length determine the second corresponding search volume respectively, wherein, the second search volume that the control channel of at least two different Signalling length uses described at least one time tranfer unit is different;
The described network equipment has identical Signalling length control channel by described at least two is mapped to the first search volume, and the control channel described at least two with different Signalling length is mapped to the second corresponding search volume respectively;
Described search volume is the specific search volume of subscriber equipment.
2. method according to claim 1, is characterized in that:
The member carrier that described at least two control channels with identical Signalling length are corresponding different;
The member carrier that described at least two control channels with different Signalling length are corresponding different.
3. method according to claim 1 and 2, is characterized in that, describedly determines that the first search volume comprises:
The first search volume is determined in the initial ranging space according to described at least two with the control channel of identical Signalling length.
4. method according to claim 1 and 2, is characterized in that, describedly determines that the second corresponding search volume comprises respectively:
The second corresponding search volume is determined in the initial ranging space according to described at least two with the control channel of different Signalling length respectively.
5. method according to claim 3, is characterized in that, described first search volume for described in the search volume that forms, at least two initial ranging spaces with the control channel of identical Signalling length all or part of.
6. a method for control channel detection, is characterized in that, comprising:
For same polymerization level, subscriber equipment determines that at least two control channels with identical Signalling length and at least two have the control channel of different Signalling length;
According to the Signalling length of control channel corresponding to member carrier, described subscriber equipment for described at least two control channels with identical Signalling length determine the first search volume, wherein, the first search volume of the control channel use of described at least two identical Signalling length is identical;
In at least one time tranfer unit, according to the Signalling length of control channel corresponding to member carrier, described subscriber equipment for described at least two control channels with different Signalling length determine the second corresponding search volume respectively, wherein, the second search volume that the control channel of at least two different Signalling length uses described at least one time tranfer unit is different;
Described in described subscriber equipment detects in the first search volume, at least two have the control channel of identical Signalling length, and described in detecting in the second search volume of correspondence respectively, at least two have the control channel of different Signalling length;
Described search volume is the specific search volume of subscriber equipment.
7. method according to claim 6, is characterized in that:
The member carrier that described at least two control channels with identical Signalling length are corresponding different;
The member carrier that described at least two control channels with different Signalling length are corresponding different.
8. the method according to claim 6 or 7, is characterized in that, describedly determines that the first search volume comprises:
The first search volume is determined in the initial ranging space according to described at least two with the control channel of identical Signalling length.
9. the method according to claim 6 or 7, is characterized in that, describedly determines that the second corresponding search volume comprises respectively:
The second corresponding search volume is determined in the initial ranging space according to described at least two with the control channel of different Signalling length respectively.
10. method according to claim 8, is characterized in that, described first search volume for described in the search volume that forms, at least two initial ranging spaces with the control channel of identical Signalling length all or part of.
11. 1 kinds of transmitters, is characterized in that, comprising: the first processing module and the second processing module, wherein,
First processing module comprises: the first search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, determine at least two control channels with identical Signalling length, and determine the first search volume for described at least two control channels with identical Signalling length, wherein, the first search volume of the control channel use of described at least two identical Signalling length is identical; And first mapping block, be mapped to the first search volume for the control channel described at least two with identical Signalling length;
Second processing module comprises: the second search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, determine at least two control channels with different Signalling length, and at least one time tranfer unit, the control channel for described at least two with different Signalling length determines the second corresponding search volume respectively, wherein, the second search volume that the control channel of at least two different Signalling length uses described at least one time tranfer unit is different; And second mapping block, the control channel for described at least two being had different Signalling length is mapped to the second corresponding search volume respectively;
Described search volume is the specific search volume of subscriber equipment.
12. equipment according to claim 11, is characterized in that:
The member carrier that described at least two control channels with identical Signalling length are corresponding different;
The member carrier that described at least two control channels with different Signalling length are corresponding different.
13. equipment according to claim 11 or 12, it is characterized in that, described first processing module is used for:
For same polymerization level, determine at least two control channels with identical Signalling length, and there is according to described at least two the initial ranging space of the control channel of identical Signalling length, the control channel for described at least two with identical Signalling length determines the first search volume.
14. equipment according to claim 11 or 12, it is characterized in that, described second processing module is used for:
For same polymerization level, determine at least two control channels with different Signalling length, and at least one time tranfer unit, have the initial ranging space of the control channel of different Signalling length according to described at least two, the control channel for described at least two with different Signalling length determines the second corresponding search volume respectively.
15. equipment according to claim 13, is characterized in that, described first processing module is used for:
For same polymerization level, determine at least two control channels with identical Signalling length, and determine the first search volume for described in the search volume that forms, at least two initial ranging spaces with the control channel of identical Signalling length all or part of.
16. 1 kinds of receiving equipments, is characterized in that, comprising: comprise the first processing module and the second processing module, wherein,
First processing module comprises: the first search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, determine at least two control channels with identical Signalling length, and determine the first search volume for described at least two control channels with identical Signalling length, wherein, the first search volume of the control channel use of described at least two identical Signalling length is identical; And first detection module, at least two control channels with identical Signalling length described in detecting in the first search volume;
Second processing module comprises: the second search volume determination module, for for same polymerization level, according to the Signalling length of control channel corresponding to member carrier, determine at least two control channels with different Signalling length, and at least one time tranfer unit, the control channel for described at least two with different Signalling length determines the second corresponding search volume respectively, wherein, the second search volume that the control channel of at least two different Signalling length uses described at least one time tranfer unit is different; And second detection module, for the control channel that at least two have a different Signalling length described in detecting in the second search volume of correspondence respectively;
Described search volume is the specific search volume of subscriber equipment.
17. equipment according to claim 16, is characterized in that:
The member carrier that described at least two control channels with identical Signalling length are corresponding different;
The member carrier that described at least two control channels with different Signalling length are corresponding different.
18. equipment according to claim 16 or 17, it is characterized in that, described first processing module is used for:
For same polymerization level, determine at least two control channels with identical Signalling length, and there is according to described at least two the initial ranging space of the control channel of identical Signalling length, the control channel for described at least two with identical Signalling length determines the first search volume.
19. equipment according to claim 16 or 17, it is characterized in that, described second processing module is used for:
For same polymerization level, determine at least two control channels with different Signalling length, and at least one time tranfer unit, have the initial ranging space of the control channel of different Signalling length according to described at least two, the control channel for described at least two with different Signalling length determines the second corresponding search volume respectively.
20. equipment according to claim 18, is characterized in that, described first processing module is used for:
For same polymerization level, determine at least two control channels with identical Signalling length, and determine the first search volume for described in the search volume that forms, at least two initial ranging spaces with the control channel of identical Signalling length all or part of.
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