CN101741710A - Uplink-downlink configuration and receiving methods of TDD system carrier aggregation - Google Patents
Uplink-downlink configuration and receiving methods of TDD system carrier aggregation Download PDFInfo
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- CN101741710A CN101741710A CN200810226037A CN200810226037A CN101741710A CN 101741710 A CN101741710 A CN 101741710A CN 200810226037 A CN200810226037 A CN 200810226037A CN 200810226037 A CN200810226037 A CN 200810226037A CN 101741710 A CN101741710 A CN 101741710A
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- 239000000969 carrier Substances 0.000 claims abstract description 59
- 238000006116 polymerization reaction Methods 0.000 claims description 51
- 239000000284 extract Substances 0.000 claims description 6
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Abstract
The invention provides an uplink-downlink configuration method of a TDD system carrier aggregation, comprising the following steps of: independently carrying out uplink-downlink configuration on all member carriers that participate in the aggregation in a cell, and ensuring that at least one same uplink subframe and at least one same downlink subframe exist between at least two member carriers and the configuration of at least one member carrier accords with the uplink-downlink configuration of an R8; and issuing the uplink-downlink configuration of any member carrier and the uplink-downlink configuration of other member carriers of any member carrier aggregation into an LTE-A user terminal UE. The invention also provides an uplink-downlink configuration receiving method of the TDD system carrier aggregation. The invention can realize the uplink-downlink configuration in the LTE-A system so as to be suitable for TDD system requirements.
Description
Technical field
The present invention relates to carrier aggregation technology, the uplink-downlink configuration and the method for reseptance of particularly a kind of time division multiplexing (TDD) system carrier aggregation.
Background technology
LTE-Advanced (being called for short LTE-A) system can support the wideer system bandwidth than Long Term Evolution (LTE) system, such as 100MHz.Particularly, can couple together use by resource with a plurality of LTE carrier waves (claiming member carrier again), think that LTE-A UE provides wideer system bandwidth, wherein, LTE-A UE is the terminal equipment of LTE evolution system, can in the LTE-A system, work, and can support the new function that the LTE-A system is provided.There are two kinds of modes that connect a plurality of LTE carrier resources in concrete LTE-A system, and a kind of is that a plurality of continuous LTE carrier waves are carried out polymerization, and another kind is that a plurality of discontinuous LTE carrier waves are carried out polymerization, all can provide bigger transmission bandwidth for LTE-A.Fig. 1 has provided the example of discontinuous carrier aggregation.
The research of standardization body tendency is at present, common recognition for the carrier aggregation system design is, it is consistent as far as possible with LTE Release 8 (being called for short R8) that design on the carrier wave keeps, thereby not only can provide bigger transmission bandwidth for the LTE-A terminal, can also guarantee simultaneously terminal (being called for short LTE UE) operate as normal on each member carrier of LTE R8, backward compatible to realize.
To LTE Release 8 tdd modes, satisfy the demand of up-downgoing asymmetric traffic amount by different uplink-downlink configuration, its ascending-descending subframes is assigned the various configurations shown in the table 1.In the TDD system, the base station need be to the current ascending-descending subframes assignment information in this sub-district of Cell Broadcast CB, and the TDD terminal obtains just can carry out normal data transmission and reception after this information.
And do not consider the uplink-downlink configuration problem on the different carrier under the tdd mode in the LTE-A system design at present, and there is not relevant solution, also can't guarantee terminal operate as normal on each member carrier of R8.
The different uplink-downlink configuration modes of table 1 LTE-TDD system
Summary of the invention
In view of this, the invention provides a kind of uplink-downlink configuration and method of reseptance of TDD system carrier aggregation, can be implemented in the uplink-downlink configuration in the LTE-A system, to adapt to the TDD system requirements.
For achieving the above object, the present invention adopts following technical scheme:
A kind of uplink-downlink configuration method of TDD system carrier aggregation comprises:
For each member carrier that participates in polymerization in the sub-district independently carries out uplink-downlink configuration, and guarantee to have at least one identical sub-frame of uplink descending sub frame identical with at least one at least between two member carriers, the configuration of at least one member carrier meets the uplink-downlink configuration of R8;
Be handed down to the LTE-A user terminal UE that inserts corresponding member carrier with the uplink-downlink configuration of arbitrary member carrier with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization.
Preferably, when carrying out described uplink-downlink configuration, guarantee that the uplink-downlink configuration of each member carrier and its adjacent uplink-downlink configuration frequently satisfy the coexistence requirement.
Preferably, describedly be for each member carrier of participation polymerization in the sub-district carries out uplink-downlink configuration:
For each member carrier that condenses together carries out identical uplink-downlink configuration, for each member carrier that condenses together carries out different uplink-downlink configuration.
Preferably, describedly for each member carrier that participates in polymerization in the sub-district carries out uplink-downlink configuration be: the carrier aggregation mode in the judgement sub-district is that continuous polymerization still is discontinuous polymerization, if continuous polymerization, then carry out identical uplink-downlink configuration for all member carriers, if discontinuous polymerization is then carried out uplink-downlink configuration respectively for each member carrier.
Preferably, the uplink-downlink configuration of all member carriers all meets the uplink-downlink configuration of R8.
Preferably, described with arbitrary member carrier uplink-downlink configuration and be handed down to the LTE-A UE that inserts corresponding carriers with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization and comprise:
By broadcast issue described arbitrary member carrier uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization; Perhaps,
High-level signaling by described arbitrary member carrier issue described arbitrary member carrier uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization.
Preferably, the mode that issues with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization is:
Issue uplink-downlink configuration one by one with other member carriers of described arbitrary member carrier polymerization;
Perhaps, the uplink-downlink configuration of the information whether uplink-downlink configuration of the uplink-downlink configuration that issues described other member carriers and described arbitrary member carrier is identical and described other member carriers different with the uplink-downlink configuration of described arbitrary member carrier;
Perhaps, issue the uplink-downlink configuration of described other member carriers different with the uplink-downlink configuration of described arbitrary member carrier.
Preferably, after the uplink-downlink configuration of carrying out each member carrier, this method further comprises: the uplink-downlink configuration of arbitrary member carrier is handed down to the LTE UE that inserts corresponding member carrier.
Preferably, utilize different physical resources or logical resource to issue the uplink-downlink configuration of described arbitrary member carrier and described other member carriers.
Preferably, when LTE-A UE need receive simultaneously on a plurality of carrier waves or send data, described LTE-A UE scheduling is all on the subframe of downlink or uplink on a plurality of member carriers of polymerization.
A kind of uplink-downlink configuration method of reseptance of TDD system carrier aggregation, LTE-A user equipment (UE) on its access carrier, receive this LTE-A UE access carrier that the base station issues uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of this access carrier polymerization.
Preferably, this method further comprises: LTE UE receives the uplink-downlink configuration of this LTE UE access carrier that the base station issues on its access carrier.
Preferably, on each member carrier, be provided for respectively in advance carrying this carrier wave uplink-downlink configuration and with the physical resource or the logical resource of other carrier wave uplink-downlink configuration information of this carrier aggregation;
Described LTE-A UE extracts the uplink-downlink configuration of this access carrier on default described physical resource that is used to carry this access carrier uplink-downlink configuration information or logical resource on its access carrier, on its access carrier default described be used to carry with the physical resource of other member carrier uplink-downlink configuration information of this access carrier polymerization or logical resource on extract uplink-downlink configuration with other member carriers of this access carrier polymerization;
Described LTE UE extracts the uplink-downlink configuration of this access carrier on default described physical resource that is used to carry this access carrier uplink-downlink configuration information or logical resource on its access carrier.
As seen from the above technical solution, among the present invention, for each member carrier that participates in polymerization in the sub-district independently carries out uplink-downlink configuration, and there be at least one identical sub-frame of uplink descending sub frame identical between at least two member carriers of assurance with at least one, thereby guarantee that the LTE-A system can provide bigger system bandwidth, the configuration of at least one member carrier simultaneously meets the uplink-downlink configuration of R8, thereby guarantees backward compatible to R8.After being configured in the manner described above, be handed down to LTE-A UE with the uplink-downlink configuration of arbitrary member carrier with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization, thereby make LTE-A UE can know this uplink-downlink configuration, with transmission and the reception of correctly finishing data.
Description of drawings
Fig. 1 is the schematic diagram of discontinuous carrier aggregation in the LTE-A system.
Fig. 2 is the uplink-downlink configuration method overview flow chart of TDD system carrier aggregation provided by the invention.
Adjacent frequency coexistence condition schematic diagram 1 when Fig. 3 is the carrier wave uplink-downlink configuration.
Adjacent frequency coexistence condition schematic diagram 2 when Fig. 4 is the carrier wave uplink-downlink configuration.
Allocation of carriers schematic diagram when Fig. 5 needs bigger downlink bandwidth for LTE-A UE.
Allocation of carriers schematic diagram when Fig. 6 needs bigger upstream bandwidth for LTE-A UE.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, the present invention is described in further details below in conjunction with accompanying drawing.
Fig. 2 is the uplink-downlink configuration method overview flow chart of TDD system carrier aggregation provided by the invention.As shown in Figure 2, this method comprises:
Step 201, for each member carrier that participates in polymerization in the sub-district independently carries out uplink-downlink configuration, and guarantee to have at least one identical sub-frame of uplink descending sub frame identical with at least one at least between two member carriers, the configuration of at least one member carrier meets the uplink-downlink configuration of R8.
The present invention proposes for LTE-A TDD system, but the uplink-downlink configuration separate configurations on its each member carrier, promptly can occur as the situation of sowing: the uplink-downlink configuration on each member carrier is identical, perhaps, and the uplink-downlink configuration difference on each member carrier.
Preferably, owing to have other adjacent TDD systems frequently on the member carrier, for meeting the adjacent requirement of intercarrier frequently, guarantee the normal operation of each system, requirement is in the uplink-downlink configuration process of member carrier, the uplink-downlink configuration of each member carrier and its adjacent uplink-downlink configuration frequently satisfy the coexistence requirement, i.e. up-downgoing to this carrier wave is assigned certain restriction.Concrete coexistence require with to the restriction of uplink-downlink configuration with existing require identical.For example Fig. 3 and Fig. 4 describe.
As shown in Figure 3, since operator in frequency f1 deploy TD-CDMA network (for example uplink-downlink configuration is 7: 8), simultaneously in the frequency f2 deploy adjacent with f1 LTE-TDD system 1, because the needs of adjacent frequency coexistence, the uplink-downlink configuration of this LTE-TDD system 1 needs to be configured according to the configuration in the table 16, to avoid adjacent inter-system interference frequently;
As shown in Figure 4, since frequency f3 deploy TD-SCDMA (for example uplink-downlink configuration is 4: 3), simultaneously in the frequency f4 deploy adjacent with f3 LTE-TDD system 2, because the needs of adjacent frequency coexistence, the uplink-downlink configuration of this LTE-TDD system 2 needs to be configured according to the configuration in the table 11, to avoid adjacent inter-system interference frequently.
Simultaneously, for guaranteeing that the LTE-A system can provide higher system bandwidth for LTE-A UE, requirement can use to same LTE-A UE a plurality of allocation of carriers simultaneously, and these a plurality of carrier waves need have identical upstream or downstream subframe, therefore, when carrying out the uplink and downlink timeslot configuration, need to have at least one identical sub-frame of uplink descending sub frame identical at least between two member carriers with at least one, think that LTE-A UE provides enough bandwidth to carry out transfer of data.
Further, can backward compatible R8 for guaranteeing member carrier, require the configuration of at least one member carrier to meet the uplink-downlink configuration of R8.
The above-mentioned condition that when member carrier carries out uplink-downlink configuration, need satisfy that is.Concrete, in member carrier uplink-downlink configuration process, preferably, can carry out in the following manner:
Judge that the carrier aggregation mode in the sub-district is that continuous polymerization still is discontinuous polymerization, if continuous polymerization, then for all member carriers carry out identical uplink-downlink configuration, if discontinuous polymerization is then carried out uplink-downlink configuration respectively for each member carrier.
Concrete, when a plurality of member carriers are situations of continuous polymerization,, disposing mutually different up-downgoing distribution and can cause the mutual interference between the up-downgoing on the nearby frequency bands because each carrier wave is frequently adjacent, the uplink-downlink configuration that therefore preferably is configured to each carrier wave is identical.Certainly, also at this moment uplink-downlink configuration that can be different, needs to consider adjacent interference problem frequently.
When a plurality of member carriers are situations of non-continuous polymerization,, therefore can be configured to different uplink-downlink configuration, and can not have aforesaid interference problem owing to non-conterminous mutually on frequency spectrum between each carrier wave.But each member carrier and its adjacent uplink-downlink configuration of intercarrier frequently still need to meet aforesaid coexistence requirement.
Each member carrier through above-mentioned configuration, all member carrier all meets the uplink-downlink configuration of R8, the uplink-downlink configuration that also can part member carrier wherein meets R8, the selected uplink-downlink configuration of concrete each carrier wave also can be selected arbitrarily to make up, and the coexistence requirement waits restrictive condition between aforesaid adjacent frequency as long as satisfy.
In this step, specifically issue uplink-downlink configuration mode can for: the high-level signaling notice by the broadcast on each carrier wave or this carrier wave inserts the UE of corresponding carriers.
The mode that issues with the uplink-downlink configuration of other member carriers of certain carrier wave A polymerization also can have multiple, for example, to issue successively with the uplink-downlink configuration of each other member carrier of certain carrier wave A polymerization, perhaps adopt the mode of incremental distribution, promptly at first notify UE whether identical with the uplink-downlink configuration of carrier wave A, the uplink-downlink configuration of those member carriers that will be different with the uplink-downlink configuration of carrier wave A issues successively again, perhaps, can also be directly in the uplink-downlink configuration of other member carriers and carrier wave A not simultaneously, just issue the uplink-downlink configuration of other member carriers, otherwise think that other member carriers are identical with the uplink-downlink configuration of carrier wave A.
Preferably,, the uplink-downlink configuration of each member carrier can also be handed down to the LTE UE that inserts corresponding carriers, LTE UE can be transmitted and receive data in the LTE-A system for guaranteeing backward compatible to R8.At this moment, can on arbitrary carrier wave A, utilize different physical resources or logical resource to issue the uplink-downlink configuration of member carrier A and other member carriers, for example, use different broadcast channels or be encapsulated in the different packets and issue, thereby make LTE UE receive only the uplink-downlink configuration of this carrier wave, make LTE-A UE can receive the uplink-downlink configuration of this carrier wave and other member carriers.
So far, basic uplink-downlink configuration method flow process finishes among the present invention.
Corresponding with above-mentioned uplink-downlink configuration method, the present invention also provides a kind of method of reseptance of uplink-downlink configuration.In this method of reseptance, carry out the reception of uplink-downlink configuration by LTE-A UE, the concrete uplink-downlink configuration that is about to each carrier wave that the base station issues and receive with the uplink-downlink configuration of other carrier waves of this carrier aggregation, thereby carry out in the data transmission procedure follow-up, can utilize a plurality of carrier aggregation to carry out transfer of data, to improve the system data transmission bandwidth.Simultaneously, because the invention described above is when carrying out uplink-downlink configuration, the uplink-downlink configuration of each carrier wave can also be handed down to the LTE UE that inserts this carrier wave by corresponding carriers, therefore, also can receive the uplink-downlink configuration of this LTE UE institute access carrier that the base station issues at LTE UE.Concrete,
For the UE that inserts each LTE TDD carrier wave, need know the uplink-downlink configuration of this carrier wave, specifically be to learn by the broadcast that sends on this carrier wave;
For the LTE-A UE that inserts each LTE-TDD carrier wave, need know with this carrier aggregation provide large transmission bandwidth more other carrier waves on uplink-downlink configuration, specifically know mode can for:
A) know by the broadcast on this carrier wave that promptly each carrier wave is also broadcasted the uplink-downlink configuration information of other polymerization carrier waves except the uplink-downlink configuration information of broadcasting this carrier wave.Whether this broadcast also can adopt incremental mode to send, promptly earlier notify the uplink-downlink configuration on each carrier wave identical with this carrier wave respectively, then only broadcasts the uplink-downlink configuration information on the member carrier different with the configuration of this carrier wave.
B) know by the high-level signaling on this carrier wave, for example set up when RRC connects and notify.Similarly, this high-level signaling also can adopt incremental mode notice, promptly has only when other carrier waves and this carrier wave uplink-downlink configuration and does not just notify concrete uplink-downlink configuration information simultaneously, otherwise only indicate corresponding carrier wave identical with this carrier wave uplink-downlink configuration.
Promptly realized uplink-downlink configuration and reception in the LTE-A system by the way, like this, created condition for bigger system bandwidth is provided to UE.After carrying out above-mentioned configuration, preferably, owing to have the demand of bigger bandwidth, when certain LTE-A UE need receive simultaneously on a plurality of carrier waves or send data, this LTE-A UE scheduling can be all on the subframe of upstream or downstream on a plurality of member carriers of polymerization.
For example, if a certain LTE-A UE needs bigger downlink bandwidth (need receive data on a plurality of carrier waves simultaneously), then the base station can be in a plurality of carrier waves of polymerization the selection portion sub-carrier, and this LTE-AUE scheduling is being all on the descending subframe, as shown in Figure 5 on these carrier waves.
Similar method is also adopted in support for up bigger bandwidth, as shown in Figure 6.
In addition, in implementing process of the present invention, also need to guarantee to keep precise synchronization between the LTE-TDD system on the different carrier, specifically comprise radio frames alignment and subframe alignment.
By the specific implementation of the invention described above as seen, the invention solves the uplink-downlink configuration problem on the LTE-A TDD system different members carrier wave, when carrying out uplink-downlink configuration, can be as required for member carrier being configured to meet the uplink-downlink configuration of R8, to realize backward compatible to R8, perhaps also can adopt other suitable uplink-downlink configuration, to realize better transmission property.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the uplink-downlink configuration method of a TDD system carrier aggregation is characterized in that, this method comprises:
For each member carrier that participates in polymerization in the sub-district independently carries out uplink-downlink configuration, and guarantee to have at least one identical sub-frame of uplink descending sub frame identical with at least one at least between two member carriers, the configuration of at least one member carrier meets the uplink-downlink configuration of R8;
Be handed down to the LTE-A user terminal UE that inserts corresponding member carrier with the uplink-downlink configuration of arbitrary member carrier with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization.
2. method according to claim 1 is characterized in that, when carrying out described uplink-downlink configuration, guarantees that the uplink-downlink configuration of each member carrier and its adjacent uplink-downlink configuration frequently satisfy the coexistence requirement.
3. method according to claim 1 is characterized in that, describedly for each member carrier of participation polymerization in the sub-district carries out uplink-downlink configuration is:
For each member carrier that condenses together carries out identical uplink-downlink configuration, for each member carrier that condenses together carries out different uplink-downlink configuration.
4. method according to claim 1, it is characterized in that, describedly for each member carrier that participates in polymerization in the sub-district carries out uplink-downlink configuration be: the carrier aggregation mode in the judgement sub-district is that continuous polymerization still is discontinuous polymerization, if continuous polymerization, then carry out identical uplink-downlink configuration for all member carriers, if discontinuous polymerization is then carried out uplink-downlink configuration respectively for each member carrier.
5. according to arbitrary described method in the claim 1 to 4, it is characterized in that the uplink-downlink configuration of all member carriers all meets the uplink-downlink configuration of R8.
6. method according to claim 1 is characterized in that, described with arbitrary member carrier uplink-downlink configuration and be handed down to the LTE-AUE that inserts corresponding carriers with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization and comprise:
By broadcast issue described arbitrary member carrier uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization; Perhaps,
High-level signaling by described arbitrary member carrier issue described arbitrary member carrier uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization.
7. method according to claim 6 is characterized in that, the mode that issues with the uplink-downlink configuration of other member carriers of described arbitrary member carrier polymerization is:
Issue uplink-downlink configuration one by one with other member carriers of described arbitrary member carrier polymerization;
Perhaps, the uplink-downlink configuration of the information whether uplink-downlink configuration of the uplink-downlink configuration that issues described other member carriers and described arbitrary member carrier is identical and described other member carriers different with the uplink-downlink configuration of described arbitrary member carrier;
Perhaps, issue the uplink-downlink configuration of described other member carriers different with the uplink-downlink configuration of described arbitrary member carrier.
8. according to claim 1,6 or 7 described methods, it is characterized in that after the uplink-downlink configuration of carrying out each member carrier, this method further comprises: the uplink-downlink configuration of arbitrary member carrier is handed down to the LTE UE that inserts corresponding member carrier.
9. method according to claim 8 is characterized in that, utilizes different physical resources or logical resource to issue the uplink-downlink configuration of described arbitrary member carrier and described other member carriers.
10. method according to claim 1 is characterized in that, when LTE-A UE need receive simultaneously on a plurality of carrier waves or send data, described LTE-A UE scheduling is all on the subframe of downlink or uplink on a plurality of member carriers of polymerization.
11. the uplink-downlink configuration method of reseptance of a TDD system carrier aggregation, it is characterized in that this method comprises: the LTE-A user equipment (UE) on its access carrier, receive this LTE-A UE access carrier that the base station issues uplink-downlink configuration and with the uplink-downlink configuration of other member carriers of this access carrier polymerization.
12. method of reseptance according to claim 11 is characterized in that, this method further comprises: LTE UE receives the uplink-downlink configuration of this LTE UE access carrier that the base station issues on its access carrier.
13. method of reseptance according to claim 12 is characterized in that, on each member carrier, be provided for respectively in advance carrying this carrier wave uplink-downlink configuration and with the physical resource or the logical resource of other carrier wave uplink-downlink configuration information of this carrier aggregation;
Described LTE-A UE extracts the uplink-downlink configuration of this access carrier on default described physical resource that is used to carry this access carrier uplink-downlink configuration information or logical resource on its access carrier, on its access carrier default described be used to carry with the physical resource of other member carrier uplink-downlink configuration information of this access carrier polymerization or logical resource on extract uplink-downlink configuration with other member carriers of this access carrier polymerization;
Described LTE UE extracts the uplink-downlink configuration of this access carrier on default described physical resource that is used to carry this access carrier uplink-downlink configuration information or logical resource on its access carrier.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102260370A CN101741710B (en) | 2008-11-04 | 2008-11-04 | Uplink-downlink configuration and receiving methods of TDD system carrier aggregation |
| KR1020117012941A KR101239865B1 (en) | 2008-11-04 | 2009-11-04 | Method and device for enabling multi-carriers aggregation transmission |
| US13/127,539 US9137003B2 (en) | 2008-11-04 | 2009-11-04 | Method and device for enabling multi-carriers aggregation transmission |
| PCT/CN2009/074783 WO2010051752A1 (en) | 2008-11-04 | 2009-11-04 | Method and device for enabling multi-carriers aggregation transmission |
| ES09824407.2T ES2587056T3 (en) | 2008-11-04 | 2009-11-04 | Transmission method and device with multi-carrier aggregation |
| EP09824407.2A EP2355567B1 (en) | 2008-11-04 | 2009-11-04 | Method and device for enabling multi-carriers aggregation transmission |
| EP15202540.9A EP3032860B1 (en) | 2008-11-04 | 2009-11-04 | Method and device for enabling multi-carriers aggregation transmission |
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| CN2008102260370A CN101741710B (en) | 2008-11-04 | 2008-11-04 | Uplink-downlink configuration and receiving methods of TDD system carrier aggregation |
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| WO2012150806A2 (en) * | 2011-05-02 | 2012-11-08 | 엘지전자 주식회사 | Method for transmitting/receiving data in wireless communication system and base station for same |
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| CN100534027C (en) * | 2005-08-17 | 2009-08-26 | 大唐移动通信设备有限公司 | Transmission method of time division duplexing system |
| CN1960210B (en) * | 2005-11-04 | 2011-06-22 | 上海原动力通信科技有限公司 | Method and application for reducing coexistent interference of time division duplexing system in different frame structure |
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