CN101765184A - Method and equipment for scheduling carrier wave resources by using downlink control channel - Google Patents
Method and equipment for scheduling carrier wave resources by using downlink control channel Download PDFInfo
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- CN101765184A CN101765184A CN200810240537A CN200810240537A CN101765184A CN 101765184 A CN101765184 A CN 101765184A CN 200810240537 A CN200810240537 A CN 200810240537A CN 200810240537 A CN200810240537 A CN 200810240537A CN 101765184 A CN101765184 A CN 101765184A
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Abstract
The invention discloses a method and equipment for scheduling carrier wave resources by using a downlink control channel. The method comprises the steps that: in a first time period, a base station side selects carrier waves from the carrier waves in a carrier aggregation system and designates the selected carrier waves as main carrier waves of user equipment from all the carrier waves in a carrier aggregation system and a control signaling is sent on the designated main carrier waves through the downlink control channel of a physical layer; the user equipment monitors the downlink control channel of the physical layer on designated main carrier waves and transmits data according to a physical source, which is scheduled by the control signaling in the downlink control channel of the physical layer, on the carrier wave; in a second time period, the base station side simultaneously sends the control signaling through the downlink control channel of the physical layer on a plurality of carrier waves in the carrier aggregation system, wherein the number of the plurality of carrier waves is greater than the number of the main carrier waves; and the user equipment simultaneously monitors the downlink control channel of the physical layer on the plurality of carrier waves and transmits the data according to the physical source, which is scheduled by the control signaling on the downlink control channel of the physical layer, on the carrier wave. The method and the equipment can realize the control on the downlink control channel in the carrier aggregation system.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of method and apparatus that uses the down control channel scheduling carrier wave resources.
Background technology
For LTE-Advanced (Long Term Evolution Advanced, the system of Long Term Evolution-A) is for supporting the system bandwidth wideer than LTE system, such as 100MHz, need to couple together use, dual mode specifically arranged by resource with a plurality of LTE carrier waves (claiming member carrier again):
1, a plurality of continuous LTE carrier waves is carried out polymerization, for LTE-A provides bigger transmission bandwidth;
2, a plurality of discontinuous LTE carrier waves are carried out polymerization, for LTE-A provides bigger transmission bandwidth.
Fig. 1 is discontinuous carrier aggregation schematic diagram, the example that provides discontinuous carrier aggregation shown in Figure 1.
At present the research of standardization body tendency is, is that design on each carrier wave keeps consistent as far as possible with LTE Release 8 for the common recognition of carrier aggregation system design, thus the terminal of assurance R8 can be on each member carrier operate as normal.
During current standard at LTE-A is discussed, the design of the PDCCH (physicaldownlink control channel, Physical Downlink Control Channel) of carrier aggregation system there is following several candidate scheme, respectively its pluses and minuses is described below.
Following elder generation describes the represented implication of each several part among following Fig. 2 to Fig. 5, below among each figure, vertical bar is the descending control signaling zone, horizontal stripe is the downlink data zone, arrow is represented the pairing data of this control signaling.Accordingly, Reference numeral be the control signaling of 1 vertical bar representative to control corresponding Reference numeral be 1 data, when the Reference numeral of vertical bar is 123 interval scale control datas 1, data 2, data 3.
Scheme one
Fig. 2 uses independently PDCCH structural representation for each carrier wave, and as shown in the figure, each carrier wave independently sends PDCCH in scheme one, and this PDCCH only can dispatch the physical resource of this carrier wave.
It is advantageous that:
A), to greatest extent reused the design of R8, do not needed to define extra PDCCH structure and signaling format, agreement is changed little;
B), support independently link circuit self-adapting of each carrier wave flexibly;
C) if the PDCCH on a certain carrier wave of UE omission or false retrieval, the PDCCH on other carrier waves is unaffected;
D), the PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) of PDCCH and its scheduling can appear at same subframe, because there is not the problem that need lock other frequencies again.
But its deficiency is:
A), UE (User Equipment, subscriber equipment) need monitor PDCCH on a plurality of carrier waves, power consumption is big;
B), according to requirement parallel many PDCCH of blind check on a plurality of carrier waves of LTE R8, the blind check complexity is directly proportional with the carrier wave number and increases relation the UE needs respectively;
C), because every PDCCH has added CRC (Cyclic Redundancy Check, cyclic redundancy check (CRC)) check digit (requirement according to LTE R8 is the CRC check position that adds 16bits), when many PDCCH were parallel, the CRC expense was bigger.
Scheme two
Fig. 3 is carried on the structural representation that a plurality of independently PDCCH on some carrier waves dispatch a plurality of carrier resources, as shown in the figure, use a plurality of independent PDCCH that is carried on a certain carrier wave to dispatch a plurality of carrier resources in scheme two, this scheme is an improvement to scheme one.
It is advantageous that:
A), support independently link circuit self-adapting of each carrier wave similarly flexibly with scheme one;
B), bigger to the PDCCH design reuse degree of R8, do not need to define new DCI (Downlinkcontrol information, Downlink Control Information) form;
C), PDCCH of omission or false retrieval does not influence the data dispatch on other carrier waves;
D), UE only need be on a carrier wave monitoring control channel, power consumption is little.
Its deficiency is:
A), UE need be on a carrier wave many PDCCH of blind check, the blind check complexity is doubled and redoubled;
B), because every PDCCH has added CRC check position (way according to LTE R8 is the CRC check position that adds 16bits), when many PDCCH were parallel, the CRC expense was bigger;
C), be positioned at the situation of same carrier wave, PDSCH data and PDCCH can send in same subframe for the PDSCH of PDCCH and its scheduling; And be positioned at the situation of different carrier for the PDSCH of PDCCH and its scheduling, and PDSCH data and PDCCH can't send in same subframe, and reason is that UE decodes and needs to lock again PDSCH place frequency after the PDCCH and accept data.Therefore two kinds of sequential relationships of descending existence are comparatively complicated;
D), many PDCCH of carrying on carrier wave, the physical resource of control area is comparatively nervous;
E), need new DCI form, the carrier index that the support indication is dispatched.
Scheme three
Fig. 4 is carried on the structural representation that a PDCCH on some carrier waves dispatches a plurality of carrier resources, as shown in the figure, uses a PDCCH who is carried on a certain carrier wave to dispatch a plurality of carrier resources in scheme three.
It is advantageous that:
A), a certain UE only need be on a certain carrier wave monitoring control channel, power consumption is little;
B), a certain UE only need be on a certain carrier wave PDCCH of blind check, the blind check complexity is similar to R8;
C), compare scheme one and two, the resource overhead of control channel littler (having saved a part of CRC expense at least).
Its deficiency is:
A), need the new DCI form of definition, could support the scheduling of resource of a plurality of carrier waves;
B), owing to only a PDCCH is arranged, the influence that its false retrieval or omission bring is more serious than scheme one or two;
C), be positioned at the situation of same carrier wave, PDSCH data and PDCCH can send in same subframe for the PDSCH of PDCCH and its scheduling; And be positioned at the situation of different carrier for the PDSCH of PDCCH and its scheduling, and PDSCH data and PDCCH can't send in same subframe, and reason is that UE decodes and needs to lock again PDSCH place frequency after the PDCCH and accept data.Therefore two kinds of sequential relationships of descending existence are comparatively complicated.
Scheme four
Fig. 5 is the structural representation that a PDCCH being carried on a plurality of carrier waves dispatches a plurality of carrier resources, as shown in the figure, uses a PDCCH who is carried on a plurality of carrier waves to dispatch a plurality of carrier resources in scheme four.
It is advantageous that:
A), a certain UE need be on a plurality of carrier waves PDCCH of blind check, the blind check complexity is similar to R8;
B), compare scheme one, the resource overhead of control channel littler (having saved a part of CRC expense at least);
C), since the shared carrier number of PDCCH always more than or equal to the shared carrier number of PDSCH, PDCCH and PDSCH can send in same subframe, do not have again the problem of frequency lock;
D), because PDCCH is mapped on a plurality of carrier waves the physical resource expense of control area comparison balance on a plurality of carrier waves.
Its deficiency is:
A), need the new DCI form of definition, support the scheduling of resource of a plurality of carrier waves;
B), owing to only a PDCCH is arranged, the influence that its false retrieval/omission brings is more serious than scheme one or two;
C), UE needs monitoring control channel on a plurality of carrier waves simultaneously.
Summary of the invention
The invention provides a kind of method and apparatus that uses the down control channel scheduling carrier wave resources, in order to the controlling schemes of the PDCCH in the carrier aggregation system to be provided.
A kind of method of using the down control channel scheduling carrier wave resources is provided in the embodiment of the invention, has comprised the steps:
In very first time section, base station side is UE appointment main carrier in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
UE monitors the physical layer descending control channel on the main carrier of described appointment, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel;
In second time period, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system simultaneously, and the number of described a plurality of carrier waves is greater than described main carrier number;
UE monitors the physical layer descending control channel simultaneously on described a plurality of carrier waves, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel.
The embodiment of the invention also provides a kind of system that uses the down control channel scheduling carrier wave resources, comprises UE and the base station equipment that contains first scheduler module and/or second scheduler module, wherein:
First scheduler module is used in very first time section, is UE appointment main carrier in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
UE is used for monitoring the physical layer descending control channel on the main carrier of described appointment, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel;
Second scheduler module was used in second time period, sent control signaling by the physical layer descending control channel simultaneously in a plurality of carrier waves of carrier aggregation system, and the number of described a plurality of carrier waves is greater than described main carrier number;
UE also is used for monitoring the physical layer descending control channel simultaneously on described a plurality of carrier waves, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel.
The embodiment of the invention also provides a kind of base station, comprising:
First scheduler module is used in very first time section, is UE appointment main carrier in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
Second scheduler module was used in second time period, sent control signaling by the physical layer descending control channel simultaneously in a plurality of carrier waves of carrier aggregation system, and the number of described a plurality of carrier waves is greater than described main carrier number.
The embodiment of the invention also provides a kind of subscriber equipment, comprising:
First monitors module, is used in very first time section, monitors the physical layer descending control channel on the main carrier of appointment;
Second monitors module, is used in second time period, monitors the physical layer descending control channel simultaneously on described a plurality of carrier waves;
Scheduler module, the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel that is used for listening to according to the first monitoring module, the second monitoring module carries out transfer of data.
Embodiment of the invention beneficial effect is as follows:
The embodiment of the invention not only can be carried out effective fusion to the control channel scheme, also considers UE power consumption and scheduling overhead/factors such as time-delay simultaneously, can be good at realizing the control of PDCCH in the carrier aggregation system.
Description of drawings
Fig. 1 is a discontinuous carrier aggregation schematic diagram in the background technology;
Fig. 2 uses independently PDCCH structural representation for each carrier wave in the background technology;
Fig. 3 dispatches the structural representation of a plurality of carrier resources for being carried on a plurality of independently PDCCH on some carrier waves in the background technology;
Fig. 4 dispatches the structural representation of a plurality of carrier resources for being carried on a PDCCH on some carrier waves in the background technology;
Fig. 5 dispatches the structural representation of a plurality of carrier resources for a PDCCH who is carried on a plurality of carrier waves in the background technology;
Fig. 6 is the method implementing procedure schematic diagram that uses the down control channel scheduling carrier wave resources in the embodiment of the invention;
Fig. 7 is that schematic diagram is implemented in the processing after very first time section combined with second time period in the embodiment of the invention;
Fig. 8 is the system configuration schematic diagram that uses the down control channel scheduling carrier wave resources in the embodiment of the invention;
Fig. 9 is an architecture of base station schematic diagram in the embodiment of the invention;
Figure 10 is a user device architecture schematic diagram in the embodiment of the invention.
Embodiment
Deficiency at various control channel schemes in the prior art, provided the control channel scheme that is applicable in the carrier aggregation system in the embodiment of the invention, adopt the scheme in the embodiment of the invention, providing possibility for taking all factors into consideration UE power consumption and factors such as scheduling overhead, time-delay, is a kind of comparatively rational solution.Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Fig. 6 as shown in the figure, can comprise the steps: for using the method implementing procedure schematic diagram of down control channel scheduling carrier wave resources
Below concrete enforcement the in above-mentioned steps ground described.
One, at first specify the enforcement that sends control signaling by PDCCH on the main carrier to describe to very first time section t1 is inherent.
In the enforcement, base station side can be that each LTE-A terminal specifies main carrier, and this main carrier is one or more among all carrier waves of system, establishes LTE-A system member carrier and adds up to N, and the main carrier number is n, then n≤N.
The base station is only specified for each LTE-A terminal simultaneously and is gone up the duration t1 that monitors PDCCH at main carrier (being a described n main carrier), and then under non-DRX (discontinuous reception) state, in this duration, UE only monitors PDCCH on main carrier.PDCCH in this duration can dispatch the physical resource on all carrier waves that comprise main carrier.Below again to t1 in the time enforcement of n=1 and 1＜n≤N describe.
1), when n=1, the mapping scheme of PDCCH can be one of following mode or its combination:
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently PDCCH is gone up the control signaling that sends at a carrier wave;
On a PDCCH on the main carrier, send control signaling at a plurality of carrier waves.
2), when 1＜n≤N, the mapping scheme of PDCCH can be one of following scheme or its combination:
Independently send control signaling on PDCCH at each main carrier at this carrier wave;
A PDCCH who is mapped on a plurality of main carriers goes up the control signaling that sends at each carrier wave;
In concrete the enforcement,, also can be in order to reduce the PDCCH expense:
Many on the main carrier control signalings that independently send on the PDCCH at each carrier wave;
On a PDCCH on the main carrier, send control signaling at a plurality of carrier waves.
Secondly two, base station side in second time period t 2 are sent control signaling by PDCCH in a plurality of carrier waves of carrier aggregation system and describe.
In the enforcement, in the carrier wave number is m, and satisfy under the situation of n＜m≤N, base station side can specify in the duration t2 that monitors PDCCH on a plurality of carrier waves for each LTE-A terminal simultaneously, under non-DRX state, in this duration, UE monitors PDCCH on m carrier wave, and the PDCCH in this duration can dispatch the physical resource on all carrier waves.
Can be one of following scheme or its combination at the PDCCH mapping scheme of t2 in the time period:
Independently send control signaling on PDCCH at each carrier wave at this carrier wave;
Or a PDCCH who is mapped on a plurality of carrier waves goes up the control signaling that sends at each carrier wave;
In concrete the enforcement,, also can be in order to reduce the PDCCH expense:
Many on the carrier wave control signalings that independently send on the PDCCH at each carrier wave;
On a PDCCH on the carrier wave, send control signaling at a plurality of carrier waves.
Lift an example below in order to explanation.
Fig. 7 is that schematic diagram is implemented in the processing after very first time section combined with second time period, in the enforcement of the above-mentioned very first time section t1 and the second time t2, t1 and t2 can be combined to form repetition period T, the simplest a kind of execution mode comprises a time period t 1 and a time period t 2 as shown in Figure 7 in the one-period T time.In concrete the enforcement, can implement by independently sending on the physical layer descending control channel in the time period at t1, also can implement by the control signaling that on a physical layer descending control channel on the carrier wave, sends at a plurality of carrier waves at the control signaling of each carrier wave at many on the carrier wave.
At t2 in the time period, can implement by independently sending at the control signaling of this carrier wave on physical layer descending control channel at each carrier wave; Also can implement by the control signaling that sends on the physical layer descending control channel that is mapped on a plurality of carrier waves at each carrier wave.
Both difference are that physical resource that a PDCCH takies is on a carrier wave or a plurality of.
Then represent that the base station can dispatch UE and switch main carrier after the T, this switching is by extra signaling scheduling, can occur in the T1 time period, also can occur in the T2 time period.
The time span of the very first time section and second time period, and/or very first time section and the syntagmatic of second time period set in advance.Can consider the various combinations of t1 and t2 and different sequencings in the actual system design, a plurality of t1 time periods and a plurality of t2 time period are formed a complete repetition period T, promptly, priority on the not free order of t1 and t2, the time length of t1 and t2 does not have inevitable requirement yet, also might not just must be made of a t1 and a t2 in the T, the compound mode of t1 and t2 depends on taking all factors into consideration UE power consumption and factors such as scheduling overhead, time-delay among the T.
For a certain UE, under non-DRX state, base station and UE can be simultaneously repeat that PDCCH goes up the transmission of control signaling and to the monitoring work of PDCCH with period T, in each time period t 1 of one-period T according to very first time section in described mode operate; Operate according to described mode in second time period in each time period t 2 in one-period T.
In concrete the enforcement, time span that sets in advance and/or syntagmatic are indicated UE by high-level signaling by base station side after base station side sets in advance; Or, set in advance time span and/or syntagmatic in base station side and UE side respectively.
That is, concrete time period t 1 and the length of t2 can be configured concrete terminal by the base station, and this configuration can be finished by high-level signaling, for example Zhuan Yong RRC (Radio Resource Control, Radio Resource control) signaling.
Concrete time period t 1 and t2 form repetition period T by which kind of combination and sequencing, can adopt the method for standard convention to realize.For example can in standard, arrange a kind of preferred version; Also can in standard, arrange several different compound modes, be applicable to different application scenarioss, in different compound modes, select by the method for high-level signaling.
Concrete indicating means can be as follows:
1, time span+figure quadrat method: the i.e. time span of notice or agreement t1 and t2, and the combination of t1 that comprises among the T and t2;
2, initial moment+duration method: the i.e. duration of the zero-time of notice or agreement t1 and t2, and notice or agreement t1 and t2;
3, initial moment+termination method constantly: the i.e. concluding time of the zero-time of notice or agreement t1 and t2, and notice or agreement t1 and t2.
In concrete the enforcement, main carrier number n and corresponding carrier index, and the carrier index of described a plurality of carrier wave number and correspondence can be configured the UE side by base station side.Carrier wave number m and corresponding carrier index that the carrier index of main carrier number n and correspondence and big bandwidth are monitored PDCCH are configured concrete terminal by the base station, when base station side is configured the UE side, by high-level signaling UE is configured, for example uses special-purpose RRC signaling.
Under connection status, the base station can be reshuffled the various parameters that as above relate to by high-level signaling, for example main carrier number n and corresponding main carrier are numbered, carrier wave number m that big bandwidth is monitored and corresponding carrier index, t1 and t2 divide formation of other time span and repetition period T or the like.
During concrete enforcement, the concrete mode of creating t1 and t2 and period T can realize by the method for aforesaid configuration timer time length, the mode that also can adopt higher layer message to trigger realizes, for example trigger the t1 state that enters by a particular message, trigger the t2 state that enters by another particular message again, or the like.The benefit of this way is, the transfer of monitoring the PDCCH state is more flexible, but signaling consumption is also bigger.
In the enforcement, can open or close very first time section, and use signaling to trigger subscriber equipment and open or close very first time section by the base station; And/or, open or closed for second time period by the base station, and use signaling to trigger subscriber equipment and open or closed for second time period.
That is,, also can realize by the mode of base station triggers for very first time section and the On/Off of second time period.Perhaps use signaling to trigger the unlatching of section sometime, re-use signaling and trigger corresponding the end.
Based on same inventive concept, the present invention also provides a kind of system that uses the down control channel scheduling carrier wave resources and relevant base station, UE, because the method for system, equipment and use down control channel scheduling carrier wave resources is a principle of uniformity, therefore enforcement that in force can reference method repeats part and repeats no more.
Fig. 8 is for using the system configuration schematic diagram of down control channel scheduling carrier wave resources, as shown in the figure, comprise in the system UE801, with the base station equipment 802 that contains first scheduler module 8021 and/or second scheduler module 8022, wherein:
UE801 is used for monitoring the physical layer descending control channel in very first time section on the main carrier of described appointment, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel;
UE801 also was used for monitoring the physical layer descending control channel simultaneously on described a plurality of carrier waves in second time period, and carried out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel.
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently sends the control signaling at a carrier wave on the physical layer descending control channel;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
Can further include in the system:
In concrete the enforcement, configuration module 803 is further used for by high-level signaling UE being configured.
Base station equipment is further used for setting in advance described very first time section and the time span of second time period, and/or very first time section and the syntagmatic of second time period, and by high-level signaling UE is indicated;
Or, set in advance time span and/or syntagmatic in base station side and UE side respectively.
In the enforcement, first scheduler module is further used for opening or close very first time section according to base station triggers, and uses signaling to trigger subscriber equipment and open or close very first time section;
And/or second scheduler module is further used for opening or closing for second time period according to base station triggers, and uses signaling to trigger subscriber equipment and open or close very first time section.
Fig. 9 is the architecture of base station schematic diagram, as shown in the figure, can comprise in the base station:
First scheduler module can be further used in very first time section, when the main carrier of appointment is a carrier wave, sends control signaling by the physical layer descending control channel on described appointment main carrier, is specially one of following mode or its combination:
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently sends the control signaling at a carrier wave on the physical layer descending control channel;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
Second scheduler module can be further used in very first time section, when the main carrier of appointment is a plurality of carrier wave, sends control signaling by the physical layer descending control channel on described appointment main carrier, is specially one of following mode or its combination:
Independently send control signaling on physical layer descending control channel at each main carrier at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
Second scheduler module can also be further used in second time period, in the number of described a plurality of carrier waves during greater than described main carrier number, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system, is specially one of following mode or its combination:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
Figure 10 is the user device architecture schematic diagram, as shown in the figure, can comprise among the UE:
As can be seen from the above-described embodiment, the control channel scheme in carrier aggregation system that is provided in the embodiment of the invention, not only can carry out effective fusion to the control channel scheme, also consider UE power consumption and scheduling overhead/factors such as time-delay simultaneously, can be good at realizing the control of PDCCH in the carrier aggregation system.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (22)
1. a method of using the down control channel scheduling carrier wave resources is characterized in that, comprises the steps:
In very first time section, base station side is specified main carrier for subscriber equipment in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
Subscriber equipment is monitored the physical layer descending control channel on the main carrier of described appointment, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel;
In second time period, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system simultaneously, and the number of described a plurality of carrier waves is greater than described main carrier number;
Subscriber equipment is monitored the physical layer descending control channel simultaneously on described a plurality of carrier waves, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel.
2. the method for claim 1, it is characterized in that, in very first time section, when the main carrier of described appointment is a carrier wave, on described appointment main carrier, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently sends the control signaling at a carrier wave on the physical layer descending control channel;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
3. the method for claim 1, it is characterized in that, in very first time section, when the main carrier of described appointment is a plurality of carrier wave, on the main carrier of described appointment, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
Independently send control signaling on physical layer descending control channel at each main carrier at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of main carriers at each carrier wave;
Many on the main carrier control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
4. the method for claim 1, it is characterized in that, further comprise: in second time period, the number of described a plurality of carrier waves is during greater than described main carrier number, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system, is specially one of following mode or its combination:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
5. the method for claim 1 is characterized in that, described main carrier number n and corresponding carrier index, and the carrier index of described a plurality of carrier wave number and correspondence is configured user equipment side by base station side.
6. method as claimed in claim 5 is characterized in that, when described base station side is configured user equipment side, by high-level signaling subscriber equipment is configured.
7. as the arbitrary described method of claim 1 to 6, it is characterized in that, described very first time section and the time span of second time period, and/or very first time section and the syntagmatic of second time period set in advance.
8. method as claimed in claim 7 is characterized in that, described time span that sets in advance and/or syntagmatic are indicated subscriber equipment by high-level signaling by base station side after base station side sets in advance;
Or, set in advance time span and/or syntagmatic in base station side and user equipment side respectively.
9. the method for claim 1 is characterized in that, opens or close very first time section by the base station, and uses signaling to trigger subscriber equipment and open or close very first time section;
And/or, open or closed for second time period by the base station, and use signaling to trigger subscriber equipment and open or closed for second time period.
10. a system that uses the down control channel scheduling carrier wave resources is characterized in that, comprises subscriber equipment and the base station equipment that contains first scheduler module and/or second scheduler module, wherein:
First scheduler module is used in very first time section, specifies main carrier for subscriber equipment in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
Subscriber equipment is used for monitoring the physical layer descending control channel in very first time section on the main carrier of described appointment, and carries out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel;
Second scheduler module was used in second time period, sent control signaling by the physical layer descending control channel simultaneously in a plurality of carrier waves of carrier aggregation system, and the number of described a plurality of carrier waves is greater than described main carrier number;
Subscriber equipment also was used for monitoring the physical layer descending control channel simultaneously on described a plurality of carrier waves in second time period, and carried out transfer of data according to the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel.
11. system as claimed in claim 10, it is characterized in that, described first scheduler module is further used in very first time section, when the main carrier of appointment is a carrier wave, on described appointment main carrier, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently sends the control signaling at a carrier wave on the physical layer descending control channel;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
12. system as claimed in claim 10, it is characterized in that, described second scheduler module is further used in very first time section, when the main carrier of appointment is a plurality of carrier wave, on described appointment main carrier, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
13. system as claimed in claim 10, it is characterized in that, described second scheduler module was further used in second time period, in the number of described a plurality of carrier waves during greater than described main carrier number, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system, is specially one of following mode or its combination:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
14. system as claimed in claim 10 is characterized in that, further comprises:
Configuration module links to each other with base station side, is used for disposing described main carrier number n and corresponding carrier index in user equipment side, and described a plurality of carrier wave number and corresponding carrier index.
15. system as claimed in claim 14 is characterized in that, described configuration module is further used for by high-level signaling subscriber equipment being configured.
16. as the arbitrary described system of claim 10 to 15, it is characterized in that, base station equipment is further used for setting in advance described very first time section and the time span of second time period, and/or very first time section and the syntagmatic of second time period, and subscriber equipment is indicated by high-level signaling;
Or, set in advance time span and/or syntagmatic in base station side and user equipment side respectively.
17. system as claimed in claim 10 is characterized in that, described first scheduler module is further used for opening or close very first time section according to base station triggers, and uses signaling to trigger subscriber equipment and open or close very first time section;
And/or described second scheduler module is further used for opening or closing for second time period according to base station triggers, and uses signaling to trigger subscriber equipment and open or close very first time section.
18. a base station is characterized in that, comprising:
First scheduler module is used in very first time section, specifies main carrier for subscriber equipment in all carrier waves of carrier aggregation system, and sends control signaling by the physical layer descending control channel on described appointment main carrier;
Second scheduler module was used in second time period, sent control signaling by the physical layer descending control channel simultaneously in a plurality of carrier waves of carrier aggregation system, and the number of described a plurality of carrier waves is greater than described main carrier number.
19. base station as claimed in claim 18, it is characterized in that, described first scheduler module is further used in very first time section, when the main carrier of appointment is a carrier wave, on described appointment main carrier, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
In the control signaling that independently sends on physical layer descending control channel on the main carrier at this carrier wave;
Have many independently Physical Downlink Control Channel on main carrier, each bar independently sends the control signaling at a carrier wave on the physical layer descending control channel;
On a physical layer descending control channel on the main carrier, send control signaling at a plurality of carrier waves.
20. base station as claimed in claim 18, it is characterized in that, described second scheduler module is further used in very first time section, when the main carrier of appointment is a plurality of carrier wave, on described appointment main carrier, send control signaling, be specially one of following mode or its combination by the physical layer descending control channel:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
21. base station as claimed in claim 18, it is characterized in that, described second scheduler module was further used in second time period, in the number of described a plurality of carrier waves during greater than described main carrier number, base station side sends control signaling by the physical layer descending control channel in a plurality of carrier waves of carrier aggregation system, is specially one of following mode or its combination:
Independently send control signaling on physical layer descending control channel at each carrier wave at this carrier wave;
Be mapped in the control signaling that sends on the physical layer descending control channel on a plurality of carrier waves at each carrier wave;
Many on the carrier wave control signalings that independently send on the physical layer descending control channel at each carrier wave;
On a physical layer descending control channel on the carrier wave, send control signaling at a plurality of carrier waves.
22. a subscriber equipment is characterized in that, comprising:
First monitors module, is used in very first time section, monitors the physical layer descending control channel on the main carrier of appointment;
Second monitors module, is used in second time period, monitors the physical layer descending control channel simultaneously on described a plurality of carrier waves;
Scheduler module, the physical resource on the carrier wave of the control signaling scheduling on the physical layer descending control channel that is used for listening to according to the first monitoring module, the second monitoring module carries out transfer of data.
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