CN101932070A - Method and device for allocating carriers in carrier aggregation system - Google Patents
Method and device for allocating carriers in carrier aggregation system Download PDFInfo
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- CN101932070A CN101932070A CN2009100874141A CN200910087414A CN101932070A CN 101932070 A CN101932070 A CN 101932070A CN 2009100874141 A CN2009100874141 A CN 2009100874141A CN 200910087414 A CN200910087414 A CN 200910087414A CN 101932070 A CN101932070 A CN 101932070A
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- 230000002776 aggregation Effects 0.000 title claims abstract description 15
- 238000004220 aggregation Methods 0.000 title claims abstract description 15
- 239000000969 carrier Substances 0.000 title abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 230000011664 signaling Effects 0.000 claims description 100
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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Abstract
The invention discloses a method and a device for allocating carriers in a carrier aggregation system, which can ensure that a user terminal reduces the blind reducing times on a channel. The method comprises that: a base station allocates the carriers of a channel requiring monitoring the bearer control information and the carriers of a channel requiring receiving the bearer downlink data for the terminal by transmitting carrier set information of the channel requiring monitoring bearer control information and carrier set information of the channel requiring receiving bearer downlink data to the terminal.
Description
Technical field
The present invention relates to communication technical field, be meant the method and the device of configuration carrier wave in a kind of carrier aggregation system especially.
Background technology
As shown in Figure 1, in the wireless communication system before long evolving system (LTE) reaches, in the sub-district carrier wave can only be arranged, maximum bandwidth is 20MHz in the LTE system.
(LTE Advanced, LTE-A) in the system, the peak rate of system has huge raising than LTE, requires to reach descending 1Gbps, up 500Mbps at advanced person's long evolving system.On the bandwidth of 20MHz, can't satisfy this demand.Therefore, the LTE-A system needs spread bandwidth, in the sub-district of a LTE-A, comprise a plurality of carrier waves, and introduce carrier aggregation (Carrier Aggregation, CA) technology, be in the same sub-district, continuous or discrete a plurality of carrier waves are concentrated in together, and are Terminal Service, so that required speed to be provided when needed simultaneously, these carrier waves are commonly referred to as member carrier (Component Carrier), are called for short carrier wave.Can work under the carrier wave of each polymerization for the terminal that guarantees LTE, each carrier wave maximum is no more than 20MHz.In the LTE-A sub-district shown in Figure 2, polymerization 4 carrier waves.Transfer of data can be carried out with terminal simultaneously in the base station on 4 carrier waves, to improve throughput of system.
During the standard of current LTE-A was discussed, (Physicaldownlink control channel, design PDCCH) had two kinds of candidate schemes to the Physical Downlink Control Channel of carrier aggregation system.
Scheme one: each carrier wave independently sends PDCCH, and this PDCCH only can dispatch the physical resource of this carrier wave, as shown in Figure 3.
Scheme two: use a plurality of independent PDCCH that is carried on a certain carrier wave to dispatch a plurality of carrier resources, this scheme is an improvement to scheme one, and in this case, every PDCCH can only dispatch the resource of a carrier wave, as shown in Figure 4.For scheme two, UE need monitor the carrier wave of PDCCH and the carrier wave of UE actual reception data (monitoring PDSCH) can be the same or different.
The structure of LTE descending sub frame as shown in Figure 5, each descending sub frame is made up of 14 OFDMs (OFDM) symbol, preceding 2～3 OFDM symbols of descending sub frame are control character, are used for bearing downlink control signaling, and the channel of bearing downlink control signaling is called the PDCCH channel.All the other OFDM symbols carry downlink datas, the physical layer channel of bearing downlink data is called the PDSCH channel.The control signaling comprises: to (schemes one) such as the schedule information of this descending sub frame and corresponding sub-frame of uplink and relevant HARQ information, perhaps to (schemes two) such as the schedule information of this descending sub frame and other descending sub frames and corresponding sub-frame of uplink and relevant HARQ information.
Whether terminal is determined to have in corresponding subframe by the control signaling that receives descending sub frame and has been distributed resource.If distributed resource, terminal is according to the temporal frequency position of the indication acquisition resource of dispatch, the line data of going forward side by side transmitting-receiving.
In the LTE system, each sub-district has only a descending carrier, so terminal only need be monitored a PDCCH and a PDSCH on the descending carrier.In the LTE-A system, there are a plurality of descending carriers, and the transfer of data that carrier wave can be dispatched other carrier waves, so the PDCCH that UE need monitor may be positioned on the different carrier waves with PDSCH.
In LTE, each sub-district has only a descending carrier, if the frequency of neighbor cell carrier wave is identical, then the interference between the PDCCH can't be avoided.But in LTE-A, may there be a plurality of descending carriers in each sub-district, and the PDCCH of neighbor cell is placed on the different carrier waves, can reduce the interference between the PDCCH, and more reliable control information is provided, and terminal is better worked.The carrier position of coordinating the PDCCH place between neighbor cell can be called the Inter-Cell Interference Coordination (ICIC) of PDCCH.
In the prior art, when activation UE monitors certain descending carrier, be exactly to activate PDCCH and the PDSCH that UE monitors this carrier wave simultaneously, the method can be applied to scheme one.But for scheme two,,, increased the number of times of PDCCH blind check, also can increase the interference between the PDCCH simultaneously so adopt prior art can unnecessary PDCCH be monitored because the PDCCH of required monitoring may be different with PDSCH.
Medium access control (MAC) protocol Data Unit (PDU) basic structure and characteristics thereof are described below down.
The general structure of MAC PDU as shown in Figure 6.Identify the situation that comprises MAC head, Medium Access Control (MAC) Service Data Unit (SDU), MAC layer control unit (MAC CE, MAC ControlElement) and padding among the MAC PDU among this figure.The MAC head is made up of one or more MAC heads.
MAC layer control command down below described.
Complete MAC control command comprises MAC head and MAC layer control unit, type and length that MAC head is used to indicate pairing MAC CE or MAC SDU.MAC CE is used to carry control messages.The MAC CE that defines in the LTE system has set form, and length is the integral words joint.
The form of LTE MAC head has two kinds:
First kind of form, shown in Fig. 7 a and 7b, MAC form of LTE is: the sub-head of R/R/E/LCID/F/L.7a is depicted as the sub-head of R/R/E/LCID/F/L7 of 7 bits, and 7b is the sub-head of the R/R/E/LCID/F/L7 of 15 bits.
Second kind of form, referring to shown in Figure 8, MAC form of LTE is the sub-head of R/R/E/LCID.
Wherein, logical channel identifier (LCID) territory is used to identify the type of MAC CE and the logic channel under the MAC SDU.MAC CE that the indication of L territory is corresponding or the length of MAC SDU.
Summary of the invention
The invention provides the method and the device of configuration carrier wave in a kind of carrier aggregation system, can make the blind reducing number of times of user terminal minimizing channel.
The method of configuration carrier wave in a kind of carrier aggregation system that the embodiment of the invention provides comprises:
The base station by send to terminal this terminal need monitor bear control information channel carrier set information and need to receive the carrier set information of the channel of bearing downlink data, the carrier wave and needing that need monitor the channel of bear control information for this terminal configuration receives the carrier wave of the channel of bearing downlink data.
The device of configuration carrier wave in a kind of carrier aggregation system that the embodiment of the invention provides comprises:
The carrier wave determining unit is used for the carrier set information that this terminal need be monitored the channel of the carrier set information of channel of bear control information and needs reception bearing downlink data;
Dispensing unit, by send to terminal this terminal need monitor bear control information channel carrier set information and need to receive the carrier set information of the channel of bearing downlink data, the carrier wave and needing that need monitor the channel of bear control information for this terminal configuration receives the carrier wave of the channel of bearing downlink data.
In the embodiment of the invention, in carrier aggregation system, by send the carrier set information that this terminal need be monitored the carrier set information of PDCCH and need to receive PDSCH to this terminal, can reduce the number of times that terminal is all carried out blind reducing to unnecessary channel, reduce the power consumption of end side.
Description of drawings
Fig. 1 is the distribution of carriers schematic diagram of LTE sub-district;
Fig. 2 is the distribution of carriers schematic diagram of the LTE-A sub-district of employing CA;
Fig. 3 independently calls the PDCCH schematic diagram for each carrier wave;
Fig. 4 dispatches the schematic diagram of a plurality of carrier resources for using a plurality of independent PDCCH that is carried on a certain carrier wave;
Fig. 5 is the structural representation of LTE descending sub frame;
Fig. 6 is a MAC PDU basic structure schematic diagram;
Fig. 7 a and Fig. 7 b are the schematic diagram of MAC form one;
Fig. 8 is the schematic diagram of MAC form two;
Fig. 9 is the schematic flow sheet of embodiment of the invention method;
Figure 10 is the embodiment of the invention one a carrier wave configuration schematic diagram;
Figure 11 is for adopting the form schematic diagram of a kind of MAC CE in the embodiment of the invention configuration carrier wave;
Figure 12 is for adopting the form schematic diagram of another kind of MAC CE in the embodiment of the invention configuration carrier wave;
Figure 13 is the structural representation of embodiment of the invention device.
Embodiment
In embodiments of the present invention, in multi-carrier aggregation system, the base station by send to terminal this terminal need monitor bear control information channel carrier set information and need to receive the carrier set information of the channel of bearing downlink data, the carrier wave and needing that need monitor the channel of bear control information for this terminal configuration receives the carrier wave of the channel of bearing downlink data.
Such as: when the described channel that need monitor bear control information is PDCCH, when the described channel that need receive the bearing downlink data is PDSCH, by for send the carrier set information that this terminal need be monitored the carrier set information of PDCCH and need to receive PDSCH to this terminal, need monitor the carrier wave and the carrier wave that needs to receive PDSCH of PDCCH for this terminal configuration.
The carrier set of PDCCH can need be monitored by send first dedicated signaling to terminal in the base station for this terminal configuration, and by send second dedicated signaling need receive PDSCH for this terminal configuration carrier set to this terminal, wherein, contain this terminal in first dedicated signaling and need monitor the carrier set information of PDCCH, contain the carrier set information that this terminal need receive PDSCH in second dedicated signaling.
The carrier set of PDCCH and the carrier set that this terminal configuration need receive PDSCH also can need be monitored for this terminal configuration by send the 4th dedicated signaling to terminal in the base station, wherein, contain this terminal in the 4th dedicated signaling and need monitor the carrier set information of PDCCH, and this terminal need receive the carrier set information of PDSCH.Described the 4th dedicated signaling can be controlled the control unit (MAC CE) of (RRC) signaling or medium access control for Radio Resource.
Further, the carrier wave of Physical Uplink Control Channel (PUCCH) can also need be used for this terminal configuration by send the 3rd dedicated signaling to this terminal in the base station, wherein, contains the carrier set information that this terminal need be used PUCCH in the 3rd dedicated signaling.
Certainly, described terminal also can be utilized the corresponding relation of the uplink and downlink carrier wave of setting, and the described carrier set that needs to monitor PDCCH, determines to need to use the carrier set of PUCCH.
Relation between described carrier set that need to monitor PDCCH and the described carrier set that needs to receive PDSCH is not limit, can be identical, also can be different, such as: two intersection of sets or non-intersect.
The base station can send described first dedicated signaling and described second dedicated signaling to this terminal simultaneously, promptly need monitor the carrier set and the carrier set information that needs to receive PDSCH of PDCCH simultaneously for this terminal configuration, also can send described first dedicated signaling and described second dedicated signaling to this terminal, or send described second dedicated signaling and described first dedicated signaling to this terminal according to sequencing according to sequencing.
To send described first dedicated signaling and described second dedicated signaling is an example to this terminal, the implementation procedure of the inventive method is described below according to sequencing.
Referring to shown in Figure 9, the method for the embodiment of the invention may further comprise the steps:
Step 901: the carrier set of PDCCH need be monitored by send first dedicated signaling to terminal in the base station for this terminal configuration.First dedicated signaling is RRC signaling or MAC CE.
Step 902: the base station is by sending second dedicated signaling need receive PDSCH for this terminal configuration carrier set to this terminal.Second dedicated signaling is RRC signaling or MAC CE.
Further, the base station can be dispatched this terminal carry out the monitoring of PDCCH and the reception of corresponding PDSCH in same subframe.
Inter-Cell Interference Coordination (ICIC) can also for this terminal reconfigures the carrier wave that needs to monitor PDCCH, be realized according to the area interference situation in the base station.
When the carrier wave of monitoring PDCCH for the needs of this terminal configuration is the DRX state, then be that the carrier wave of the needs reception PDSCH of this terminal configuration is the DRX state.
Further, the base station can deexcitation be the carrier set and the carrier set that needs to receive PDSCH of the needs monitoring PDCCH of this terminal configuration.
For exemplifying specific embodiment one the solution of the present invention is described with RRC signaling configuration carrier wave below.
Referring to shown in Figure 10, there are 4 carrier waves in the sub-district, and UE has at first set up the RRC connection on carrier wave 3, enter connection status, and the only PDCCH and the PDSCH of monitoring carrier wave 3.At this moment, because the channel quality of the needs of ICIC or carrier wave 3 is relatively poor, the base station is wished UE adjusted on carrier wave 2 and is worked, and at this moment, the base station is by the PDCCH of RRC dedicated signaling configuration UE monitoring carrier wave 2.Here can adopt the RRC dedicated signaling form shown in the table 1.
Table 1
UE forwards on the carrier wave 2 and works according to the content of dedicated signaling, monitors its PDCCH.Afterwards, if UE has big data quantity to need transmission, the base station is judged and need be carried out CA transmission (utilizing carrier wave 1,2,3) to it, then the base station receives PDSCH by RRC dedicated signaling configuration UE again on carrier wave 1,2,3, RRC dedicated signaling form is as shown in table 2, the RRC dedicated signaling here can comprise that needs receive the carrier index tabulation of PDSCH, can further include corresponding PDSCH configuration information.The PDSCH configuration information can comprise the pilot power of this channel etc.
Table 2
UE receives PDSCH according to the content of RRC dedicated signaling on carrier wave 1,2,3.At this moment, the PDCCH on the carrier wave 2 will dispatch the PDSCH of carrier wave 1,2,3, and the PDCCH of UE monitoring carrier wave 2 receives data according to the control information on it on the PDSCH of carrier wave 1,2,3.
In addition, if the carrier wave while of PDCCH is monitored in configuration, UE has mass data to need the CA transmission, and then the base station also can utilize a RRC dedicated signaling, when the PDCCH of configuration/activation UE monitoring carrier wave 2, the PDSCH on the configuration/activation UE reception carrier 1,2,3 simultaneously.
For exemplifying embodiment two technical scheme of the present invention is described with MAC CE configuration carrier wave below.
The scene of present embodiment and embodiment one is similar, but single configuration carrier wave does not adopt the RRC dedicated signaling, but adopts MAC CE.
Corresponding MAC head and the form of MAC CE are as follows:
MAC head has two kinds of designs:
(1) after introducing " monitoring PDCCH member carrier indication MAC CE " and " receiving PDSCH member carrier indication MAC CE ", need two of definition independently LCID (for example: uses the LCID value of reserving) to indicate the MAC CE of correspondence be that member carrier is indicated MAC CE; If member carrier is indicated the variable-length of MAC CE or can oneself be indicated, then adopt MAC form one; Otherwise, adopt MAC form two;
(2) with " monitoring PDCCH member carrier indication MAC CE " and the existence of " reception PDSCH member carrier is indicated MAC CE " corresponding to two R bits indications of sub of other MAC CE and MAC SDU among the MAC SDU, then economize two sub-heads of byte MAC.
MAC CE form has two kinds of possible forms:
Referring to shown in Figure 11, form 1 can adopt the MAC CE of regular length, and the length of MAC CE depends on that current area or LTE-A system allow the carrier number N of the polymerization supported at most:
N＜=8, then the length of this MAC CE is decided to be 1Byte;
8＜N＜=16, then the length of this MAC CE is decided to be 2Byte;
......
In form 1, need the carrier wave of activation to the indication of LTE-A terminal with the form of bitmap.The BITMAP of first byte is corresponding to carrier wave 1～8, if the BITMAP of second byte corresponding among carrier wave 9～16...... bitmap, certain bit is set to 1, then terminal need activate the monitoring to the corresponding carrier wave of this bit; Otherwise terminal is not monitored the corresponding carrier wave of this bit.
Form 1 also can adopt the MAC CE of variable-length, and its length is by the MAC head indication of correspondence.
Corresponding to the scene of embodiment 1, the bitmap of " monitoring PDCCH member carrier indication MAC CE " is 1 byte, and content is ' 01000000 '; The bitmap that " receives PDSCH member carrier indication MAC CE " is 1 byte, and content is ' 11100000 '.
Referring to shown in Figure 12, form 2 adopts the MAC CE of variable-length, and on behalf of the content of next byte, the length of MAC CE if the E bit is 1, then also belong to this MAC CE by the indication of E bit; If the E bit is 0, represent that then current byte is last byte of this MAC CE.
In form 2, except the E bit, other territories are bitmap.The BITMAP of first byte is corresponding to carrier wave 1～7, if the BITMAP of second byte corresponding among carrier wave 8～14...... bitmap, certain bit is set to 1, then terminal need activate the monitoring to the corresponding carrier wave of this bit; Otherwise terminal is not monitored the corresponding carrier wave of this bit.
Corresponding to the scene of embodiment 1, the bitmap of " monitoring PDCCH member carrier indication MAC CE " is 1 byte, and content is ' 00100000 '; The bitmap that " receives PDSCH member carrier indication MAC CE " is 1 byte, and content is ' 01110000 '.
Dispose the process of PUCCH carrier waves or carrier wave set below for the embodiment three explanation embodiment of the invention.
Identical with the scene of preceding two embodiment, when network configuration after the PDCCH set that need monitor of UE, network can also be used for carrier wave or the carrier wave set of the PUCCH of up feedback by following dual mode configuration:
1) base station is by dedicated signaling, and as RRC or MAC CE, configuration/activation is used for carrier wave or the carrier wave set of the PUCCH of up feedback, and specific implementation method and preceding two embodiment are similar, do not give unnecessary details at this;
2) UE is according to the monitoring PDCCH set that has activated, and according to the binding relationship of the uplink and downlink carrier wave of setting, configuration/activation can be used for carrier wave or the carrier wave set of the PUCCH of up feedback.
If employing method 2), at first need to determine the binding relationship of uplink and downlink carrier wave in the sub-district, in the scene of present embodiment, to suppose to have 4 up-link carriers, 4 descending carriers in the sub-district, binding relationship separately is as shown in the table:
| Up-link carrier | The descending carrier of being bound |
| Up-link carrier 1 | Descending carrier 1 |
| Up-link carrier 2 | Descending carrier 2 |
| Up-link carrier 3 | Descending carrier 3 |
| Up-link carrier 4 | Descending carrier 4 |
Table 3
When the PDCCH of network activation UE monitored downstream carrier 2, the up feedback control information of its correspondence will be by the PUCCH transmission of up-link carrier 2 so.
Referring to shown in Figure 13, the device of configuration carrier wave comprises: carrier wave determining unit 131 and dispensing unit 132 in a kind of carrier aggregation system of the embodiment of the invention.
Carrier wave determining unit 131 is used for the carrier set information that this terminal need be monitored the channel of the carrier set information of channel of bear control information and needs reception bearing downlink data;
The channel of monitoring bear control information when described needs is a physical downlink control channel PDCCH, and the described channel that need receive the bearing downlink data is Physical Downlink Shared Channel PDSCH, then
Carrier wave determining unit 131 is used for definite terminal and need monitors the carrier set information of PDCCH and the carrier set information that needs receive PDSCH;
Carrier wave dispensing unit 132 can comprise: the first carrier dispensing unit and the second carrier wave dispensing unit.
The first carrier dispensing unit is used for need monitoring the carrier set of PDCCH for this terminal configuration by send first dedicated signaling to terminal;
The second carrier wave dispensing unit is used for need receiving the carrier set of PDSCH by send second dedicated signaling to this terminal for this terminal configuration,
Wherein, contain the carrier set information that this terminal need be monitored PDCCH in first dedicated signaling, contain the carrier set information that this terminal need receive PDSCH in second dedicated signaling.First dedicated signaling is RRC signaling or MAC CE; Second dedicated signaling is RRC signaling or MAC CE.
Described dispensing unit, can need monitor the carrier set of PDCCH and the carrier set that this terminal configuration need receive PDSCH for this terminal configuration by send the 4th dedicated signaling to terminal, wherein, contain this terminal in the 4th dedicated signaling and need monitor the carrier set information of PDCCH, and this terminal need receive the carrier set information of PDSCH.
Can further include: deexcitation unit 133 is used for the described needs for this terminal configuration of deexcitation and monitors the carrier set of PDCCH and the carrier set that described needs receive PDSCH, perhaps other carrier set.
Can further include:
The 3rd carrier wave dispensing unit is used for need using the carrier set of PUCCH by send the 3rd dedicated signaling to this terminal for this terminal configuration, wherein, contains the carrier set information that this terminal need be used PUCCH in the 3rd dedicated signaling.
Said units in this device can be positioned at base station side.
Perhaps, can further include the 3rd carrier wave determining unit, can be positioned at end side, also can be positioned at base station side, being used at the first carrier dispensing unit is after terminal configuration need be monitored the carrier set of PDCCH, utilize the corresponding relation of the uplink and downlink carrier wave that is provided with, and the described carrier set that needs to monitor PDCCH, definite carrier set that needs to use PUCCH.
Described carrier set that need to monitor PDCCH and the described carrier set that needs to receive PDSCH intersect or are non-intersect.
The first carrier dispensing unit and the second carrier wave dispensing unit send described first dedicated signaling and described second dedicated signaling to this terminal simultaneously; Or first carrier dispensing unit and the second carrier wave dispensing unit send described first dedicated signaling and described second dedicated signaling to this terminal according to sequencing; Or first carrier dispensing unit and the second carrier wave dispensing unit send described second dedicated signaling and described first dedicated signaling to this terminal according to sequencing.
Also further comprise: scheduling unit, can be positioned at base station side, be used to dispatch this terminal and in same subframe, carry out the monitoring of PDCCH and the reception of corresponding PDSCH.
Can further include: the interference coordination unit, can be positioned at base station side, be used for according to the area interference situation, for this terminal reconfigures the carrier wave that needs to monitor PDCCH, realize Inter-Cell Interference Coordination ICIC.
When the carrier wave of monitoring PDCCH for the needs of this terminal configuration is the DRX state, then be that the carrier wave of the needs reception PDSCH of this terminal configuration is the DRX state.
The embodiment of the invention in multicarrier system, the base station can by dedicated signaling respectively the configurating terminal PDCCH that need monitor carrier set, need to receive the carrier set of PDSCH, can reduce the number of times of PDCCH blind check.And, further dispose PDCCH and PDSCH and in same subframe, dispatch, can also further carry out the ICIC of PDCCH, in addition, by binding uplink and downlink carrier wave relation, can be by the indirect PUCCH carrier wave that finds correspondence of PDCCH carrier wave, saved signaling consumption, realized simple.
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 (30)
1. the method for configuration carrier wave in the carrier aggregation system is characterized in that this method may further comprise the steps:
The base station by send to terminal this terminal need monitor bear control information channel carrier set information and need to receive the carrier set information of the channel of bearing downlink data, the carrier wave and needing that need monitor the channel of bear control information for this terminal configuration receives the carrier wave of the channel of bearing downlink data.
2. method according to claim 1 is characterized in that, the channel of monitoring bear control information when described needs is a physical downlink control channel PDCCH, and the described channel that need receive the bearing downlink data is Physical Downlink Shared Channel PDSCH,
Then the carrier set information and the carrier set information that need receive the channel of bearing downlink data of the channel of bear control information need be monitored by send this terminal to terminal in the base station, comprising:
The carrier wave and the carrier wave that needs to receive PDSCH of PDCCH need be monitored by send the carrier set information that this terminal need be monitored the carrier set information of physical downlink control channel PDCCH and need to receive the Physical Downlink Shared Channel PDSCH of bearing downlink data to terminal in the base station for this terminal configuration.
3. method according to claim 2 is characterized in that, the base station comprises by send the carrier set information that this terminal need be monitored the carrier set information of PDCCH and need to receive PDSCH to terminal:
The base station need be monitored the carrier set of PDCCH by send first dedicated signaling to terminal for this terminal configuration, and need receive the carrier set of PDSCH by send second dedicated signaling to this terminal for this terminal configuration, wherein,
Contain this terminal in first dedicated signaling and need monitor the carrier set information of PDCCH, contain the carrier set information that this terminal need receive PDSCH in second dedicated signaling.
4. method according to claim 2 is characterized in that, the base station comprises by send the carrier set information that this terminal need be monitored the carrier set information of PDCCH and need to receive PDSCH to terminal:
The base station need be monitored the carrier set of PDCCH and the carrier set that this terminal configuration need receive PDSCH by send the 4th dedicated signaling to terminal for this terminal configuration, wherein,
Contain this terminal in the 4th dedicated signaling and need monitor the carrier set information of PDCCH, and this terminal need receive the carrier set information of PDSCH.
5. according to claim 3 or 4 described methods, it is characterized in that this method further comprises:
The base station need be used the carrier wave of Physical Uplink Control Channel PUCCH by send the 3rd dedicated signaling to this terminal for this terminal configuration, wherein, contains the carrier set information that this terminal need be used PUCCH in the 3rd dedicated signaling.
6. method according to claim 3 is characterized in that, is that this method further comprised after terminal configuration need be monitored the carrier set of PDCCH in the base station by first dedicated signaling:
The corresponding relation of the uplink and downlink carrier wave that described terminal utilization is provided with, and the described carrier set that needs to monitor PDCCH, definite carrier set that needs to use PUCCH.
7. method according to claim 2 is characterized in that, described carrier set that need to monitor PDCCH and the described carrier set that needs to receive PDSCH intersect or be non-intersect.
8. method according to claim 3 is characterized in that, first dedicated signaling is the control unit MAC CE of radio resource control RRC signaling or medium access control; Second dedicated signaling is RRC signaling or MAC CE.
9. method according to claim 4 is characterized in that, described the 4th dedicated signaling is RRC signaling or MAC CE.
10. method according to claim 2 is characterized in that, the base station sends described first dedicated signaling and described second dedicated signaling to this terminal simultaneously; Or
The base station sends described first dedicated signaling and described second dedicated signaling to this terminal according to sequencing; Or
The base station sends described second dedicated signaling and described first dedicated signaling to this terminal according to sequencing.
11. method according to claim 2 is characterized in that, this method further comprises: this terminal of base station scheduling is carried out the monitoring of PDCCH and the reception of corresponding PDSCH in same subframe.
12. method according to claim 2 is characterized in that, this method further comprises:
The base station for this terminal reconfigures the carrier wave that needs to monitor PDCCH, is realized Inter-Cell Interference Coordination ICIC according to the area interference situation.
13. method according to claim 2 is characterized in that, when the carrier wave of monitoring PDCCH for the needs of this terminal configuration was non-lasting receptions DRX state, then the carrier wave for the needs reception PDSCH of this terminal configuration was the DRX state.
14. method according to claim 2 is characterized in that, this method further comprises:
The base station deexcitation is described to be carrier set and the described carrier set that needs to receive PDSCH of the needs monitoring PDCCH of this terminal configuration.
15. the device of configuration carrier wave in the carrier aggregation system is characterized in that this device comprises:
The carrier wave determining unit is used for the carrier set information that this terminal need be monitored the channel of the carrier set information of channel of bear control information and needs reception bearing downlink data;
Dispensing unit, by send to terminal this terminal need monitor bear control information channel carrier set information and need to receive the carrier set information of the channel of bearing downlink data, the carrier wave and needing that need monitor the channel of bear control information for this terminal configuration receives the carrier wave of the channel of bearing downlink data.
16. device according to claim 15 is characterized in that, the channel of monitoring bear control information when described needs is a physical downlink control channel PDCCH, and the described channel that need receive the bearing downlink data is Physical Downlink Shared Channel PDSCH, then
Described carrier wave determining unit is used for definite terminal and need monitors the carrier set information of PDCCH and the carrier set information that needs receive PDSCH;
Described dispensing unit is used for need monitoring the carrier set information of PDCCH and the carrier set information that needs receive PDSCH by send this terminal to this terminal, need monitor the carrier wave and the carrier wave that needs to receive PDSCH of PDCCH for this terminal configuration.
17. device according to claim 16 is characterized in that, described dispensing unit comprises:
The first carrier dispensing unit is used for need monitoring the carrier set of PDCCH for this terminal configuration by send first dedicated signaling to terminal;
The second carrier wave dispensing unit is used for need receiving the carrier set of PDSCH by send second dedicated signaling to this terminal for this terminal configuration,
Wherein, contain the carrier set information that this terminal need be monitored PDCCH in first dedicated signaling, contain the carrier set information that this terminal need receive PDSCH in second dedicated signaling.
18. device according to claim 16 is characterized in that, described dispensing unit is used for need monitoring the carrier set of PDCCH and the carrier set that this terminal configuration need receive PDSCH by send the 4th dedicated signaling to terminal for this terminal configuration, wherein,
Contain this terminal in the 4th dedicated signaling and need monitor the carrier set information of PDCCH, and this terminal need receive the carrier set information of PDSCH.
19. according to claim 17 or 18 described devices, it is characterized in that, also further comprise:
The 3rd carrier wave dispensing unit is used for need using the carrier set of PUCCH by send the 3rd dedicated signaling to this terminal for this terminal configuration, wherein, contains the carrier set information that this terminal need be used PUCCH in the 3rd dedicated signaling.
20. according to claim 17 or 18 described devices, it is characterized in that,
The 3rd carrier wave determining unit, being used at the first carrier dispensing unit is after terminal configuration need be monitored the carrier set of PDCCH, utilize the corresponding relation of the uplink and downlink carrier wave that is provided with, and the described carrier set that needs to monitor PDCCH, definite carrier set that needs to use PUCCH.
21. device according to claim 16 is characterized in that, described carrier set that need to monitor PDCCH and the described carrier set that needs to receive PDSCH intersect or are non-intersect.
22. device according to claim 17 is characterized in that, first dedicated signaling is RRC signaling or MAC CE; Second dedicated signaling is RRC signaling or MAC CE.
23. device according to claim 18 is characterized in that, described the 4th dedicated signaling is RRC signaling or MAC CE.
24. device according to claim 17 is characterized in that, the first carrier dispensing unit and the second carrier wave dispensing unit send described first dedicated signaling and described second dedicated signaling to this terminal simultaneously; Or
The first carrier dispensing unit and the second carrier wave dispensing unit send described first dedicated signaling and described second dedicated signaling to this terminal according to sequencing; Or
The first carrier dispensing unit and the second carrier wave dispensing unit send described second dedicated signaling and described first dedicated signaling to this terminal according to sequencing.
25. device according to claim 16 is characterized in that, also further comprises:
Scheduling unit is used to dispatch this terminal and carries out the monitoring of PDCCH and the reception of corresponding PDSCH in same subframe.
26. device according to claim 16 is characterized in that, also further comprises:
The interference coordination unit is used for according to the area interference situation, for this terminal reconfigures the carrier wave that needs to monitor PDCCH, realizes Inter-Cell Interference Coordination ICIC.
27. device according to claim 16 is characterized in that, when the carrier wave of monitoring PDCCH for the needs of this terminal configuration is the DRX state, then is that the carrier wave of the needs reception PDSCH of this terminal configuration is the DRX state.
28. device according to claim 16 is characterized in that, also further comprises:
The deexcitation unit is used for the described needs for this terminal configuration of deexcitation and monitors the carrier set of PDCCH and the carrier set that described needs receive PDSCH.
29. device according to claim 16 is characterized in that, described carrier wave determining unit and described dispensing unit are positioned at base station side.
30. device according to claim 20 is characterized in that, described the 3rd carrier wave determining unit is positioned at end side or base station side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100874141A CN101932070B (en) | 2009-06-19 | 2009-06-19 | Method and device for allocating carriers in carrier aggregation system |
| PCT/CN2010/073470 WO2010145454A1 (en) | 2009-06-19 | 2010-06-02 | Method and apparatus for configuring carriers in carrier aggregation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100874141A CN101932070B (en) | 2009-06-19 | 2009-06-19 | Method and device for allocating carriers in carrier aggregation system |
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| CN101932070A true CN101932070A (en) | 2010-12-29 |
| CN101932070B CN101932070B (en) | 2013-12-11 |
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| CN2009100874141A Active CN101932070B (en) | 2009-06-19 | 2009-06-19 | Method and device for allocating carriers in carrier aggregation system |
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Also Published As
| Publication number | Publication date |
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| CN101932070B (en) | 2013-12-11 |
| WO2010145454A1 (en) | 2010-12-23 |
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