CN101835261A - Carrier aggregation system as well as channel transmission method, user equipment and base station therein - Google Patents
Carrier aggregation system as well as channel transmission method, user equipment and base station therein Download PDFInfo
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Abstract
The invention discloses a carrier aggregation system as well as a channel transmission method, user equipment (UE) and a base station (eNB) therein. In the channel transmission method in the carrier aggregation system, a target carrier occupying a specific channel is allocated to the UE through a PDCCH (Physical Downlink Control Channel), the UE receives and decodes the PDCCH and carries out frequency locking or carrier activation processing on the target carrier of the specific channel, which is allocated by the PDCCH, and the UE receives again or sends the specific channel in a specific time after receiving the PDCCH, wherein the specific time comprises time for the UE to receive and decode the PDCCH and the time for the UE to carry out frequency locking or carrier activation on the target carrier. By using the carrier aggregation system, the channel transmission method, the UE and the eNB therein, when the specific channel and the PDCCH are not in the same carrier, the UE has enough time to carry out frequency locking or carrier activation processing on the target carrier of the specific channel, thereby successfully realizing cross-carrier scheduling.
Description
Technical field
The present invention relates to the network communications technology, particularly relate to channel transmission method, carrier aggregation system in a kind of carrier aggregation system, and a kind of subscriber equipment (UE) and base station (eNB, eNode B).
Background technology
In present third generation partner program (3GPP) Long Term Evolution (LTE) system, Physical Downlink Shared Channel (PDSCH) resource and Physical Uplink Shared Channel (PUSCH) resource are all distributed by Physical Downlink Control Channel (PDCCH).On same carrier wave, promptly there are not the operation of striding carrier wave in PDCCH in the current standard, PDSCH and PUSCH.In third generation partner program Open Standard 9 (3GPPRelease 9), stipulated the timing relationship between PDCCH and PDSCH, PDCCH and the PUSCH.In order to express easily, all represent by this channel transmission or reception information that to send or to receive a certain channel for example, transmission PDCCH channel is represented to send information by the PDCCH channel below.UE according to the above-mentioned timing relationship in 3GPPRelease 9 standards, determines the transmitting time of time of reception or the PUSCH of PDSCH after receiving the PDCCH channel of eNB.
Fig. 1 is the timing relationship schematic diagram between PDCCH and the PDSCH in the existing communication method.As shown in Figure 1, when PDCCH distributed the PDSCH resource, PDCCH and PDSCH laid respectively at the different sub carrier of same carrier wave, and PDCCH and PDSCH are positioned at same subframe, were example with subframe n in Fig. 1.In this subframe, after UE receives decoding to PDCCH, receive PDSCH.The time span of each subframe is 1ms.
Fig. 2 is the timing relationship schematic diagram between PDCCH and the PUSCH in the existing communication method.As shown in Figure 2, when PDCCH distributes the PUSCH resource, PDCCH and PUSCH lay respectively at the different sub carrier of same carrier wave, if UE receives PDCCH at subframe n, then send PUSCH at subframe n+k, this k subframe of being separated by is used for UE and PDCCH is received decodes and the PUSCH data are packaged.In Fig. 2, be example with Frequency Division Duplexing (FDD) (FDD) pattern, for fdd mode, k=4, PDCCH and PUSCH 4 subframes of being separated by, so PUSCH is positioned at the n+4 subframe.
Above-mentioned PDCCH illustrated in figures 1 and 2 and the timing relationship between the PDSCH/PUSCH are applicable to current 3GPP Release 9 standards, and in current standard, on same carrier wave, promptly there are not the operation of striding carrier wave in PDCCH and PDSCH/PUSCH.
3GPP plans to have proposed LTE upgrading (LTE-Advanced) system on the basis of existing single carrier LTE system at present, introduced carrier aggregation technology, be that UE can be simultaneously receiving PDSCH on a plurality of carrier waves or sending PUSCH simultaneously on a plurality of carrier waves, to improve single user's peak rate.Proposed to allow eNodeB to stride carrier dispatching in the present 3GPP standard discussion, promptly allowed PDCCH to distribute PDSCH resource on other carrier wave or the PUSCH resource on other carrier wave improving the scheduling of resource flexibility, and then improve resource utilization.According to this demand, if what UE distributed at the PDCCH on a certain carrier wave is PDSCH resource or PUSCH resource on other carrier wave, the carrier wave that PDCCH is distributed is as target carrier, UE need receive PDSCH or send PUSCH on target carrier, therefore, before carrying out above-mentioned reception or transmit operation, need to add UE carries out frequency locking or carrier wave activation to target carrier process.
Also support to stride carrier dispatching if on the basis of existing LTE standard, introduce above-mentioned carrier aggregation technology, then adopt PDCCH and the timing relationship between the PDSCH/PUSCH in present 3GPP Release 9 standards can't realize that reason is as follows:
For PDSCH, as shown in Figure 1, PDCCH and PDSCH are received in same subframe, if these two channels on different carrier, UE will finish without any the time target carrier will be carried out the process that frequency locking or carrier wave activate after subframe n receives PDCCH.
For PUSCH, as shown in Figure 2, PDCCH receives with the PUSCH transmission and differs k subframe, this k subframe is used for UE and carries out PDCCH and receive decoding and the PUSCH data are packaged, if PDCCH and PUSCH are positioned at different carrier, UE is after subframe n receives PDCCH, and UE still has no time to finish the process of target carrier being carried out frequency locking or carrier wave activation.
In a word, on the basis of existing standard, introduce carrier aggregation technology and can't realize striding carrier dispatching.
Summary of the invention
The invention provides the channel transmission method in a kind of carrier aggregation system, to realize striding carrier dispatching.
The present invention also provides a kind of carrier aggregation system, to realize striding carrier dispatching.
The present invention also provides a kind of subscriber equipment (UE), to realize striding carrier dispatching.
The present invention also provides a kind of base station (eNB), to realize striding carrier dispatching.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses the channel transmission method in a kind of carrier aggregation system, comprising:
Base station eNB sends physical downlink control channel PDCCH to user equipment (UE), and is the target carrier that UE distributes allocated channel to take by PDCCH;
UE receives decoding to PDCCH;
The target carrier that UE takies the allocated channel that distributes among the PDCCH carries out frequency locking or carrier wave activates processing;
UE through the fixed time, receives allocated channel or sends allocated channel to eNB from eNB after receiving PDCCH; The described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH.
Described allocated channel is Physical Downlink Shared Channel PDSCH;
The described fixed time is that UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time sum to PDCCH.
Described allocated channel is Physical Uplink Shared Channel PUSCH or Physical Uplink Control Channel PUCCH;
The target carrier that described UE takies the allocated channel that distributes among the PDCCH further comprises after carrying out frequency locking or carrier wave activation processing: UE packages to the data of PUSCH or PUCCH;
The described fixed time, to be UE received time of decoding and UE to PDCCH carries out the time sum that time that frequency locking or carrier wave activate and UE package to the data of PUSCH or PUCCH to target carrier.
The value of described fixed time is that eNB sends to UE by PDCCH;
Or,
Described communication means further comprises: eNB sends radio resource control RRC message to UE, and the value of described fixed time sends to UE by RRC message;
Or,
The value of described fixed time is stipulated in communication standard in advance;
Or,
The value of described fixed time is to stipulate in communication standard in advance and set in advance in UE and eNB according to this communication standard;
Or,
The value of described fixed time sets in advance in UE and eNB.
The invention also discloses a kind of carrier aggregation system, comprising:
Base station eNB communicates by a plurality of carrier waves and user equipment (UE), is used for sending physical downlink control channel PDCCH to UE, by PDCCH is the target carrier that UE distributes allocated channel, after sending PDCCH,, send allocated channel or receive allocated channel from UE to UE through the fixed time;
UE is used for PDCCH is received decoding, the target carrier of the allocated channel that distributes among the PDCCH is carried out frequency locking or carrier wave activate and handle, and after receiving PDCCH, through the fixed time, receive allocated channel or send allocated channel to eNB from eNB; The described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH.
Described eNB is that the allocated channel that UE distributes is Physical Downlink Shared Channel PDSCH by PDCCH, and the described fixed time is that UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time sum to PDCCH.
Described eNB is that the allocated channel that UE distributes is Physical Uplink Shared Channel PUSCH or Physical Uplink Control Channel PUCCH by PDCCH;
Described UE is further used for the data of PUSCH or PUCCH are packaged;
The described fixed time, to be UE received time of decoding and UE to PDCCH carries out the time sum that time that frequency locking or carrier wave activate and UE package to the data of PUSCH or PUCCH to target carrier.
Described eNB is further used for by PDCCH the value of fixed time being sent to UE;
Or,
Described eNB is further used for sending radio resource control RRC message to UE, by RRC message the value of described fixed time is sent to UE;
Or,
The value of the fixed time of described UE and eNB is stipulated in communication standard in advance;
Or,
Described UE and eNB are further used for preserving the value of the fixed time that sets in advance according to communication standard, and the value of described fixed time is stipulated in communication standard in advance;
Or,
Described UE and eNB are further used for preserving the value of the fixed time that sets in advance.
The invention also discloses a kind of user equipment (UE), be used for carrier aggregation communication system, comprising:
Transmit-Receive Unit is used to receive the information of physical downlink control channel PDCCH, and PDCCH is received decoding and sends decoded information to control unit, according to the reception or the transmitting control commands of control unit, receives or send allocated channel;
Control unit, be used for according to determining target carrier that allocated channel takies from the decoded information of the PDCCH of Transmit-Receive Unit and this target carrier notice carrier aggregation unit, after the information of receiving from the PDCCH of Transmit-Receive Unit, through the fixed time, transmit reception or transmitting control commands to Transmit-Receive Unit, the described fixed time comprises: Transmit-Receive Unit receives the time of decoding and frequency locking or carrier wave activation are carried out in the carrier aggregation unit to target carrier time to PDCCH;
The carrier aggregation unit is used for the target carrier of control unit notice is carried out frequency locking or carrier wave activation processing.
The invention also discloses a kind of base station eNB, be used for carrier aggregation communication system, comprising:
Control unit, the target carrier that is used to user equipment (UE) to distribute allocated channel to take is also notified Transmit-Receive Unit with this target carrier, the control Transmit-Receive Unit sends physical downlink control channel PDCCH, after sending PDCCH, through the fixed time, transmit reception or transmitting control commands to Transmit-Receive Unit, the described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH;
Transmit-Receive Unit is used for sending PDCCH to UE under the control of control unit,,, receives allocated channel or sends allocated channel to UE from UE according to the reception or the transmitting control commands of control unit the corresponding UE of target carrier notice by PDCCH.
By the foregoing invention content as seen, UE of the present invention is after receiving PDCCH, the process fixed time receives or sends allocated channel again, comprise in this fixed time: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH, therefore, as allocated channel and PDCCH during not at same carrier wave, UE can have the sufficient time that the target carrier of allocated channel is carried out frequency locking or carrier wave to activate and handle, thereby makes that striding carrier dispatching completes successfully.
Description of drawings
Fig. 1 is the timing relationship schematic diagram between PDCCH and the PDSCH in the existing communication method;
Fig. 2 is the timing relationship schematic diagram between PDCCH and the PUSCH in the existing communication method;
Fig. 3 is the flow chart of the channel transmission method in the carrier aggregation system of the embodiment of the invention;
Fig. 4 is the timing relationship schematic diagram between PDCCH and the PDSCH in the channel transmission method in the carrier aggregation system of the embodiment of the invention;
Fig. 5 is the timing relationship schematic diagram between PDCCH and the PUSCH in the channel transmission method in the carrier aggregation system of the embodiment of the invention;
Fig. 6 is the carrier aggregation system structural representation of the embodiment of the invention;
Fig. 7 is the UE structural representation of the embodiment of the invention;
Fig. 8 is the eNB structural representation of the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Basic thought of the present invention is: in the communication system of employing carrier aggregation technology, UE through the fixed time, receives or sends allocated channel after receiving PDCCH, and this fixed time comprises that UE carries out the time of frequency locking or carrier wave activation to target carrier.
Fig. 3 is the flow chart of the channel transmission method in the carrier aggregation system of the embodiment of the invention.As shown in Figure 3, the channel transmission method in the carrier aggregation system of the embodiment of the invention may further comprise the steps:
Step 301:eNB sends PDCCH to UE, and is the target carrier that UE distributes allocated channel to take by PDCCH.
In embodiments of the present invention, allocated channel can comprise one or more in following three kinds of channels: the PUSCH of the PDSCH of bearing downlink data message, carrying upstream data information, and carrying UE is to the ascending control channel (PUCCH) of transmission success/transmission failure (ACK/NACK) feedback of PDCCH order.
Step 302:UE receives decoding to PDCCH.
The target carrier that step 303:UE takies the allocated channel that distributes among the PDCCH carries out frequency locking or carrier wave activates processing.
Step 304:UE through the fixed time, receives allocated channel or sends allocated channel to eNB from eNB after receiving PDCCH.In this step, this fixed time comprises two parts, that is: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH.For different types of allocated channel, the fixed time is also different.
For allocated channel is the situation of PDSCH, and the fixed time comprises: UE receives the time of decoding and the time that UE carries out frequency locking or carrier wave activation to target carrier to PDCCH, and the fixed time is above-mentioned two time sums.Below when adopting the communication means of the embodiment of the invention timing relationship between PDCCH and the PDSCH describe.Fig. 4 is the timing relationship schematic diagram between PDCCH and the PDSCH in the carrier aggregation communication means of the embodiment of the invention.As shown in Figure 4, C1 represents carrier wave 1, be used for PDCCH, C2 represents carrier wave 2, be used for PDSCH, the fixed time is m the subframe of being separated by, if UE receives PDCCH at subframe n, then receive the PDSCH of this UE correspondence at subframe n+m, the m of a being separated by subframe is UE carries out frequency locking or carrier wave activation to the target carrier that is used for PDSCH time.In Fig. 4, only the situation with m=4 is an example.
For allocated channel is the situation of PUSCH or PUCCH, carries out after frequency locking or carrier wave activate the step of handling in the target carrier that the allocated channel that UE distributes PDCCH takies, and further comprises the step that UE packages to the data of PUSCH or PUCCH.Therefore, in this case, the fixed time comprises three parts, that is: UE receives the time of decoding, UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH, and UE time that the data of PUSCH or PUCCH are packaged, the fixed time is above-mentioned three time sums.Below be example with PUSCH, the timing relationship when adopting the communication means of the embodiment of the invention between PDCCH and the PUSCH describes.Fig. 5 is the timing relationship schematic diagram between PDCCH and the PUSCH in the carrier aggregation communication means of the embodiment of the invention.As shown in Figure 5, C1 represents carrier wave 1, is used for PDCCH, and C2 represents carrier wave 2, is used for PUSCH, and the fixed time is m+k the subframe of being separated by, if UE receives PDCCH at subframe n, then sends PUSCH at subframe n+m+k.Comprise two parts at the appointed time, wherein, m subframe is UE carries out frequency locking or carrier wave activation to the target carrier that is used for PDSCH time; K subframe is the time that UE packages to the PUSCH data.In Fig. 5, only the situation with m=2 and k=4 is an example.Timing relationship when adopting the communication means of the embodiment of the invention between PDCCH and the PUCCH is identical with the timing relationship between the PUSCH with PDCCH shown in Figure 5, does not repeat them here.
In the situation of above-mentioned three kinds of different allocated channels, for allocated channel is three kinds of situations of PDSCH, PUSCH and PUCCH, the UE of its any two or three situation correspondence can be identical to the time of target carrier execution frequency locking or carrier wave activation, also can be different, that is: the m value can be identical, also can be different.
In embodiments of the present invention, being provided with of the value of fixed time can be adopted following five kinds of modes:
Mode one is carried at the value of fixed time among the PDCCH, and eNB sends to UE by PDCCH with the value of fixed time.Concrete grammar is: PDCCH is when striding carrier dispatching, carry the number of sub-frames of being separated by between fixing PDCCH and the PDSCH, it is the value of m, and/or the number of sub-frames of being separated by between PDCCH and the PUSCH/PUCCH, it is the value of m+k, because the clear and definite value of k in the existing standard, therefore, a kind of preferable mode is, during the number of sub-frames of between indication PDCCH and PUSCH/PUCCH, being separated by, only carry among the PDCCH and be used to indicate UE the target carrier that is used for PDSCH to be carried out the value of the m of the time that frequency locking or carrier wave activate.The mode that adopts PDCCH to carry is indicated the fixed time, can adjust the value of fixed time according to the different needs of each communication, the flexibility height, but signaling consumption is big.
Mode two, eNB sends radio resource control (RRC) message to UE, by RRC message the value of fixed time is notified to UE.RC message is a kind of layer 3 signaling, and this mode is a kind of mode of static configuration, and flexibility is lower, but because the transmission frequency of RRC message is low, so adopt the signaling consumption of this mode less.
Mode three is stipulated the value of fixing fixed time in advance in communication standard.
Mode four adopts the fixing fixed time in standard, be provided with according to this standard when setting up carrier aggregation communication system, and the value of fixed time is set in advance in UE and eNB.
Mode five sets in advance the value of fixed time in UE and eNB.The value of fixed time can not unified regulation in communication standard, determine as required when setting up carrier aggregation system, sets in advance in UE and eNB.
Employing mode three, mode four and mode five, in the carrier aggregation system flexibility of Channel Transmission lower, but do not introduce any signaling consumption.
Adopt above-mentioned three kinds of modes all can realize the carrier aggregation communication means of the embodiment of the invention, wherein, in mode three as embodiment preferred.
More than the carrier aggregation communication means of the embodiment of the invention is described in detail, next introduce a kind of carrier aggregation communication system that adopts above-mentioned communication means.
Fig. 6 is the carrier aggregation communication system structural representation of the embodiment of the invention.As shown in Figure 6, comprise at least in this communication system: eNB 601 and UE 602, every dotted line is represented a carrier wave among the figure, communicates by a plurality of carrier waves between eNB 601 and the UE 602.
And eNB 601 is further used for by PDCCH the value of fixed time being sent to UE 602; Perhaps, eNB 601 is further used for sending the RRC message to UE 602, by RRC message the value of described fixed time is sent to UE 602; Perhaps, the value of the fixed time of eNB 601 and UE602 is stipulated in communication standard in advance; Perhaps, eNB 601 and UE602 are further used for preserving the value of the fixed time that sets in advance according to communication standard, and the value of this fixed time is stipulated in communication standard in advance; Perhaps, eNB 601 and UE 602 are further used for preserving the value of the fixed time that sets in advance, and the value of this fixed time can be determined according to system's needs.
For realizing above-mentioned carrier aggregation communication means and communication system, need existing UE and eNB are improved.
Fig. 7 is the UE structural representation of the embodiment of the invention.As shown in Figure 7, the UE of the embodiment of the invention comprises: Transmit-Receive Unit 701, control unit 702 and carrier aggregation unit 703.
Transmit-Receive Unit 701 is used to receive the information of PDCCH, and PDCCH is received decoding and sends decoded information to control unit 702, according to the reception or the transmitting control commands of control unit 702, receives or send allocated channel.
Frequency locking or carrier wave activation processing are carried out to the target carrier of control unit 702 notices in carrier aggregation unit 703.
Fig. 8 is the eNB structural representation of the embodiment of the invention.As shown in Figure 8, the eNB of the embodiment of the invention comprises: Transmit-Receive Unit 801 and control unit 802.
Transmit-Receive Unit 801 is used for sending PDCCH to UE under the control of control unit 802,,, receives allocated channel or sends allocated channel to UE from UE according to the reception or the transmitting control commands of control unit 802 the corresponding UE of target carrier notice by PDCCH.
By above-mentioned embodiment as seen, the present invention is in the communication system that adopts carrier aggregation technology, UE is after receiving PDCCH, the process fixed time receives or sends allocated channel again, comprise in this fixed time: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH, therefore, as allocated channel and PDCCH during not at same carrier wave, UE can have time enough that the target carrier of allocated channel is carried out frequency locking or carrier wave activates processing, thereby can make that striding carrier dispatching can complete successfully.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. the channel transmission method in the carrier aggregation system is characterized in that, comprising:
Base station eNB sends physical downlink control channel PDCCH to user equipment (UE), and is the target carrier that UE distributes allocated channel to take by PDCCH;
UE receives decoding to PDCCH;
The target carrier that UE takies the allocated channel that distributes among the PDCCH carries out frequency locking or carrier wave activates processing;
UE through the fixed time, receives allocated channel or sends allocated channel to eNB from eNB after receiving PDCCH; The described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH.
2. communication means according to claim 1 is characterized in that,
Described allocated channel is Physical Downlink Shared Channel PDS CH;
The described fixed time is that UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time sum to PDCCH.
3. communication means according to claim 1 is characterized in that,
Described allocated channel is Physical Uplink Shared Channel PUSCH or Physical Uplink Control Channel PUCCH;
The target carrier that described UE takies the allocated channel that distributes among the PDCCH further comprises after carrying out frequency locking or carrier wave activation processing: UE packages to the data of PUSCH or PUCCH;
The described fixed time, to be UE received time of decoding and UE to PDCCH carries out the time sum that time that frequency locking or carrier wave activate and UE package to the data of PUSCH or PUCCH to target carrier.
4. according to any described communication means in the claim 1 to 3, it is characterized in that,
The value of described fixed time is that eNB sends to UE by PDCCH;
Or,
Described communication means further comprises: eNB sends radio resource control RRC message to UE, and the value of described fixed time sends to UE by RRC message;
Or,
The value of described fixed time is stipulated in communication standard in advance;
Or,
The value of described fixed time is to stipulate in communication standard in advance and set in advance in UE and eNB according to this communication standard;
Or,
The value of described fixed time sets in advance in UE and eNB.
5. a carrier aggregation system is characterized in that, comprising:
Base station eNB communicates by a plurality of carrier waves and user equipment (UE), is used for sending physical downlink control channel PDCCH to UE, by PDCCH is the target carrier that UE distributes allocated channel, after sending PDCCH,, send allocated channel or receive allocated channel from UE to UE through the fixed time;
UE is used for PDCCH is received decoding, the target carrier of the allocated channel that distributes among the PDCCH is carried out frequency locking or carrier wave activate and handle, and after receiving PDCCH, through the fixed time, receive allocated channel or send allocated channel to eNB from eNB; The described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH.
6. communication system according to claim 5 is characterized in that,
Described eNB is that the allocated channel that UE distributes is Physical Downlink Shared Channel PDSCH by PDCCH, and the described fixed time is that UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time sum to PDCCH.
7. communication system according to claim 5 is characterized in that,
Described eNB is that the allocated channel that UE distributes is Physical Uplink Shared Channel PUSCH or Physical Uplink Control Channel PUCCH by PDCCH;
Described UE is further used for the data of PUSCH or PUCCH are packaged;
The described fixed time, to be UE received time of decoding and UE to PDCCH carries out the time sum that time that frequency locking or carrier wave activate and UE package to the data of PUSCH or PUCCH to target carrier.
8. according to any described communication system in the claim 5 to 7, it is characterized in that,
Described eNB is further used for by PDCCH the value of fixed time being sent to UE;
Or,
Described eNB is further used for sending radio resource control RRC message to UE, by RRC message the value of described fixed time is sent to UE;
Or,
The value of the fixed time of described UE and eNB is stipulated in communication standard in advance;
Or,
Described UE and eNB are further used for preserving the value of the fixed time that sets in advance according to communication standard, and the value of described fixed time is stipulated in communication standard in advance;
Or,
Described UE and eNB are further used for preserving the value of the fixed time that sets in advance.
9. a user equipment (UE) is used for carrier aggregation communication system, it is characterized in that, comprising:
Transmit-Receive Unit is used to receive the information of physical downlink control channel PDCCH, and PDCCH is received decoding and sends decoded information to control unit, according to the reception or the transmitting control commands of control unit, receives or send allocated channel;
Control unit, be used for according to determining target carrier that allocated channel takies from the decoded information of the PDCCH of Transmit-Receive Unit and this target carrier notice carrier aggregation unit, after the information of receiving from the PDCCH of Transmit-Receive Unit, through the fixed time, transmit reception or transmitting control commands to Transmit-Receive Unit, the described fixed time comprises: Transmit-Receive Unit receives the time of decoding and frequency locking or carrier wave activation are carried out in the carrier aggregation unit to target carrier time to PDCCH;
The carrier aggregation unit is used for the target carrier of control unit notice is carried out frequency locking or carrier wave activation processing.
10. a base station eNB is used for carrier aggregation communication system, it is characterized in that, comprising:
Control unit, the target carrier that is used to user equipment (UE) to distribute allocated channel to take is also notified Transmit-Receive Unit with this target carrier, the control Transmit-Receive Unit sends physical downlink control channel PDCCH, after sending PDCCH, through the fixed time, transmit reception or transmitting control commands to Transmit-Receive Unit, the described fixed time comprises: UE receives the time of decoding and UE carries out frequency locking or carrier wave activation to target carrier time to PDCCH;
Transmit-Receive Unit is used for sending PDCCH to UE under the control of control unit,,, receives allocated channel or sends allocated channel to UE from UE according to the reception or the transmitting control commands of control unit the corresponding UE of target carrier notice by PDCCH.
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| CN103270802A (en) * | 2010-12-27 | 2013-08-28 | 诺基亚西门子网络公司 | Inter-system carrier aggregation |
| CN103493412A (en) * | 2011-02-21 | 2014-01-01 | 三星电子株式会社 | Method and apparatus for activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation |
| CN104023358A (en) * | 2014-07-01 | 2014-09-03 | 重庆大学 | Wireless resource adjusting method capable of balancing system signaling load and terminal power consumption |
| CN105379140A (en) * | 2013-07-08 | 2016-03-02 | 三星电子株式会社 | Method and apparatus for transmitting and receiving data in a communication system using beamforming |
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