CN104113505A - Multicarrier communication system interference reducing method and terminal equipment - Google Patents
Multicarrier communication system interference reducing method and terminal equipment Download PDFInfo
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- CN104113505A CN104113505A CN201410328101.1A CN201410328101A CN104113505A CN 104113505 A CN104113505 A CN 104113505A CN 201410328101 A CN201410328101 A CN 201410328101A CN 104113505 A CN104113505 A CN 104113505A
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Abstract
The invention provides a multicarrier communication system interference reducing method and terminal equipment. The multicarrier communication system interference reducing method comprises obtaining network side carrier wave configuration information; and according to the network side carrier wave configuration information, configuring the base band DC carrier wave position of the terminal equipment to be corresponding to the loophole carrier position in a network side downlink transmission bandwidth. According to the multicarrier communication system interference reducing method and the terminal equipment, the terminal equipment is prevented from having data acceptance errors at the base band DC carrier wave position, and the terminal equipment is guaranteed to work normally.
Description
The present patent application is to be dividing an application of on 09 30th, 2010, application number are 201010298078.8, denomination of invention is " multi-carrier communications systems sub-carrier configuration method and apparatus and terminal equipment " patent application the applying date.
Technical field
The application relates to multi-carrier communications systems sub-carrier configuration method and apparatus, multi-carrier communications systems reduces method and the terminal equipment disturbing.
Background technology
In the multi-carrier communications systems of 3GPP, the channel of network side and terminal equipment side is all configured to multi-carrier polymerizing.Because terminal equipment does not have intermediate frequency filtering, at its base band direct current carrier position, will there is stronger local oscillator leakage, the subcarrier of this position is received and impacted, not only can cause the mistake of this subcarrier to receive, also probably cause relevant Resource Block to receive and make mistakes, affect the normal work of terminal.
For current LTE multi-carrier communications systems or carrier aggregation system, the center of each carrier wave of network side downstream transmission bandwidth or position, carrier wave boundary are gap carrier wave, for example, referring to the physical layer protocol of LTE, 3GPP TS36.211 standard V9.1.0 chapters and sections 6.12.Be appreciated that if by terminal receive base band direct current carrier position be configured to corresponding with the gap carrier wave in network side downstream transmission bandwidth, the data receiver Problem-Error that can to a certain degree avoid the local oscillator leakage due to terminal to cause.
Yet in 3GPP multi-carrier communications systems, network side is conventionally different from the channel carrier wave aggregate bandwidth of end side, for example, network side carrier aggregation bandwidth can be 50MHz, and end side carrier aggregation bandwidth is 40MHz.This asymmetry can make in some carrier wave configuration scene, the reception base band direct current carrier position of terminal is difficult to corresponding with the gap carrier wave in network side downstream transmission bandwidth, thereby will cause this subcarrier acceptance loss of energy, if what carry on this subcarrier is important control information, may cause the heavy losses of systematic function.
Summary of the invention
In order to solve, in prior art, terminal equipment is in the problem that receives the performance loss of base band direct current carrier position, and the application has proposed multi-carrier communications systems sub-carrier configuration method and apparatus, multi-carrier communications systems reduces method and the terminal equipment disturbing.
According to the application embodiment, a kind of multi-carrier communications systems sub-carrier configuration method has been proposed, can comprise: the ability information of obtaining terminal equipment; According to described ability information, determine the base band direct current carrier position of terminal equipment; Determine direct current correspondence position corresponding with described base band direct current carrier position in network side downstream transmission bandwidth; And be gap carrier wave or useless subcarrier by the sub-carrier configuration of direct current corresponding position described in network side downstream transmission bandwidth.
According to the application embodiment, a kind of multi-carrier communications systems sub-carrier configuration device has been proposed, can comprise: acquisition module, obtains the ability information of terminal equipment; The first determination module, according to described ability information, determines the base band direct current carrier position of terminal equipment; The second determination module, determines direct current correspondence position corresponding with described base band direct current carrier position in network side downstream transmission bandwidth; And configuration module, by the sub-carrier configuration of direct current corresponding position described in network side downstream transmission bandwidth, be gap carrier wave or useless subcarrier.
According to the application embodiment, a kind of terminal equipment has been proposed, can comprise: acquisition module, obtain in multi-carrier communications systems the gap carrier wave in network side downstream transmission bandwidth or the positional information of useless subcarrier, wherein, described terminal equipment does not carry out data manipulation to described gap carrier wave or useless subcarrier.
According to the application embodiment, propose a kind of multi-carrier communications systems and reduced the method for disturbing, can comprise: obtain network side carrier configuration information; According to described network side carrier configuration information, the base band direct current carrier position of terminal equipment is configured to corresponding with gap carrier position in network side downstream transmission bandwidth.
According to the application embodiment, a kind of terminal equipment has been proposed, can comprise: acquisition module, obtains network side carrier configuration information in multi-carrier communications systems; Configuration module, according to described network side carrier configuration information, is configured to corresponding with gap carrier position in network side downstream transmission bandwidth by the base band direct current carrier position of described terminal equipment.
According to the application, there is data receiver mistake at base band direct current carrier position in that can avoid terminal equipment, guarantees the normal work of terminal equipment.
Accompanying drawing explanation
Fig. 1 shows according to the flow chart of the multi-carrier communications systems sub-carrier configuration method of the application's embodiment;
Fig. 2 shows according to the schematic diagram of the carrier wave configuration of the network side descending transmission channel of a concrete example and terminal equipment;
Fig. 3 shows according to the flow chart of the multi-carrier communications systems sub-carrier configuration method of another embodiment of the application;
Fig. 4 shows according to the block diagram of the multi-carrier communications systems sub-carrier configuration device of the application's embodiment;
Fig. 5 shows according to the block diagram of the multi-carrier communications systems sub-carrier configuration device of another embodiment of the application;
Fig. 6 shows according to the block diagram of the terminal equipment of the application's embodiment;
Fig. 7 shows according to the block diagram of the terminal equipment of another embodiment of the application;
Fig. 8 shows the flow chart that reduces the method for disturbing according to the multi-carrier communications systems of the application's embodiment;
Fig. 9 shows the flow chart that reduces the method for disturbing according to the multi-carrier communications systems of another embodiment of the application;
Figure 10 shows according to the block diagram of the terminal equipment of the application's embodiment; And
Figure 11 shows according to the block diagram of the terminal equipment of another embodiment of the application.
Embodiment
With reference to the accompanying drawings, the application's embodiment is elaborated.
First referring to figs. 1 through Fig. 7, describe according to multi-carrier communications systems sub-carrier configuration method, device and the terminal equipment of the application's first aspect.
Fig. 1 shows according to the flow chart of the multi-carrier communications systems sub-carrier configuration method of an embodiment of the application.Method as shown in Figure 1 can be carried out by the network equipment in multi-carrier communications systems, thereby the subcarrier of descending transmission channel is configured.
As shown in Figure 1, first in step 1002, network equipment (for example base station) can obtain the ability information of terminal equipment, then in step 1004, according to the ability information of obtained terminal equipment, determines the base band direct current carrier position of this terminal equipment.After having determined base band direct current carrier position, in step 1006, can determine position corresponding with base band direct current carrier position definite in step 1004 in network side downstream transmission bandwidth, in this application, for the object of describing, this position is called to direct current correspondence position.In step 1008, can be the countless gap carrier waves according to transmission or the useless subcarrier that only sends falseness/hash by the sub-carrier configuration in above-mentioned direct current corresponding position in network side downstream transmission bandwidth afterwards.
By being gap carrier wave or useless subcarrier by the sub-carrier configuration of direct current corresponding position, there is data receiver mistake at base band direct current carrier position in that can avoid terminal equipment, guarantees the normal work of terminal equipment.
The ability information of terminal equipment can be after terminal equipment start during certain community of initial access, for example, with dedicated signaling (, RRC signaling), reports and obtained by network equipment to base station.In addition, when terminal equipment is switched to certain Er Gai community, community and there is no the ability information of terminal equipment, ability information can be asked for to terminal equipment in the base station of community.
The ability information of terminal equipment can comprise the frequency range tenability of this terminal equipment and the maximum carrier number in each band support.Be appreciated that, the center of the carrier bandwidths that the base band direct current carrier position of terminal equipment is normally supported in its certain band support or the carrier bandwidths of real work, therefore, can, according to the maximum carrier number in the frequency range tenability of terminal equipment and each band support, determine the base band direct current carrier position of terminal equipment.It will be appreciated, of course, that except above-mentioned information, the ability information of terminal equipment also can comprise other information such as Uplink MIMO tenability, descending MIMO tenability, RF capabilities.
After having determined the base band direct current carrier position of terminal equipment, can first determine direct current correspondence position corresponding with base band direct current carrier position in network side downstream transmission bandwidth, further, can, in conjunction with the subcarrier width in network side descending transmission channel, determine the subcarrier number of the corresponding network side downstream transmission bandwidth of base band direct current carrier position.Below in conjunction with Fig. 2, with a concrete example, describe in detail.
As shown in Figure 2, the carrier wave of network side descending transmission channel 22 is three, as shown is CC1:20MHz+CC2:20MHz+CC3:10MHz, and the carrier wave of the receive channel 24 of terminal equipment is two, wherein, the base band direct current carrier position that position shown in solid arrow is terminal equipment.In this example, the carrier wave that network side descending transmission channel is dispatched for this terminal equipment is 20MHz+10MHz.Can judge the 15MHz position that needs newly-increased gap carrier wave or useless sub-carrier positions to be positioned at CC2 (shown in figure downward dotted arrow position).If a subcarrier width is 15kHz, a scheduling elementary cell is that RB (Resource block, Resource Block) is comprised of 12 sub-carrier waves, and 20MHz bandwidth has 100 RB, has 1200 subcarriers, thereby corresponding sub-carrier positions can be determined.
Be appreciated that after obtaining needs newly-increased gap carrier wave or useless sub-carrier positions, can be according to the formula in the physical layer protocol 3GPP TS36.211 standard V9.1.0 chapters and sections 6.12 of LTE, corresponding subcarrier is set to gap carrier wave or useless subcarrier.
Fig. 3 shows the multi-carrier communications systems sub-carrier configuration method according to another embodiment of the application, wherein, step 3002 to 3008 with the step 1002 shown in Fig. 1 to 1008 similar, repeat no more herein.
As shown in Figure 3, in step 3010, network equipment, after carrying out gap carrier wave or useless sub-carrier configuration step, can send to terminal equipment by configured gap carrier wave or the positional information of useless subcarrier.For example, network equipment can send to terminal equipment by the positional information of gap carrier wave or useless subcarrier by broadcast message or dedicated signaling.Be appreciated that terminal equipment, after receiving the positional information of gap carrier wave that network equipment sends or useless subcarrier, can not carry out the data manipulation such as data demodulates, decoding etc. to these subcarriers, make mistakes avoiding.
In the method shown in Fig. 3, be that the mode that sends by network equipment makes terminal equipment obtain the positional information of gap carrier wave or useless subcarrier.As an optional embodiment, terminal equipment can be according to its ability information and network side descending carrier configuration information, determines gap carrier wave in network side downstream transmission bandwidth or the position of useless subcarrier in this locality.
Be appreciated that, terminal equipment can be when Cell searching or while carrying out mobile management measurement of correlation or while reading network side system information or while reading network side broadcast message, from network equipment, obtain network side descending carrier configuration information, in addition, terminal equipment also can directly read pre-configured network side carrier configuration information from memory device.After obtaining network side carrier configuration information, mobile device can adopt the mode of carrying out in network equipment described above to determine gap carrier wave in network side downstream transmission bandwidth or the position of useless subcarrier.Similarly, terminal equipment can not carry out the data manipulation such as data demodulates, decoding etc. to gap carrier wave or useless subcarrier, makes mistakes avoiding.
Next with reference to Fig. 4, describe according to the multi-carrier communications systems sub-carrier configuration device 40 of an embodiment of the application.
As shown in Figure 4, multi-carrier communications systems sub-carrier configuration device 40 can comprise acquisition module 402, the first determination module 404, the second determination module 406 and configuration module 408.Acquisition module 402 can obtain the ability information of terminal equipment.The first determination module 404 can, according to the ability information of the terminal equipment obtaining by acquisition module 402, be determined the base band direct current carrier position of terminal equipment.The second determination module 406 can be determined direct current correspondence position corresponding with the determined base band direct current of the first determination module 404 carrier position in network side downstream transmission bandwidth.Configuration module 408 can be gap carrier wave or useless subcarrier by the sub-carrier configuration in direct current corresponding position in network side downstream transmission bandwidth.
Be appreciated that each functional module that the device 40 shown in Fig. 4 comprises can be for example, the integrated module of hardware module, software module or hardware and software in the network equipment (base station) of multi-carrier communications systems.
Similarly, the ability information of terminal equipment can comprise the frequency range tenability of this terminal equipment and the maximum carrier number in each band support, therefore, can determine according to ability information the base band direct current carrier position of terminal equipment.Determine that the concrete mode of the subcarrier number of the corresponding network side downstream transmission bandwidth of base band direct current carrier position describes in detail with reference to Fig. 2 hereinbefore, here in order briefly to repeat no more.
Fig. 5 has shown the multi-carrier communications systems sub-carrier configuration device 50 according to another embodiment of the application, comprise acquisition module 502, the first determination module 504, the second determination module 506 and configuration module 508, it is similar with acquisition module 402, the first determination module 404, the second determination module 406 and configuration module 408 shown in Fig. 4 respectively, repeats no more here.Device 50 as shown in Figure 5 also further comprises sending module 510, and it can send to terminal equipment by the gap carrier wave in network side downstream transmission bandwidth or the positional information of useless subcarrier.
Similarly, after the gap carrier wave that terminal equipment sends at the sending module 510 that receives multi-carrier communications systems sub-carrier configuration device or the positional information of useless subcarrier, can be configured to these subcarriers not carried out to the data manipulation such as data demodulates, decoding etc., make mistakes avoiding.
Below with reference to Fig. 6, describe according to the terminal equipment of an embodiment of the application.Terminal equipment 60 as shown in Figure 6 can comprise acquisition module 602, for obtaining gap carrier wave in multi-carrier communications systems network side downstream transmission bandwidth or the positional information of useless subcarrier.Terminal equipment 60 can be configured to these subcarriers not carried out to the data manipulation such as data demodulates, decoding etc., makes mistakes avoiding.
As a specific embodiments, the acquisition module in the terminal equipment 60 shown in Fig. 6 can comprise receiving element 602A, for receiving the gap carrier wave of the downstream transmission bandwidth that network equipment sends or the positional information of useless subcarrier.Be appreciated that terminal equipment can be operated in multi-carrier communications systems, this system includes example sub-carrier configuration device 50 as shown in Figure 5.As mentioned above, install 50 included sending modules 510 and the gap carrier wave in network side downstream transmission bandwidth or the positional information of useless subcarrier can be sent to terminal equipment, therefore, the receiving element 602A in the acquisition module of terminal equipment 60 can directly receive to obtain information needed.
Fig. 7 shows the terminal equipment 70 according to another specific embodiments.In terminal equipment 70, can comprise acquisition module 702 similarly, for obtaining gap carrier wave in multi-carrier communications systems network side downstream transmission bandwidth or the positional information of useless subcarrier.Particularly, acquisition module 702 can comprise receiving element 702A and determining unit 702B.Receiving element 702A can receive the descending carrier aggregation information that network equipment sends, and determining unit 702B can, according to the network side descending carrier aggregation information of obtaining by receiving element 702A and the ability information of this terminal equipment, determine gap carrier wave or useless subcarrier in network side downstream transmission bandwidth.
Similarly, receiving element 702A can be when terminal equipment carries out Cell searching or while carrying out mobile management measurement of correlation or while reading network side system information or while reading network side broadcast message, from network equipment, obtain network side descending carrier configuration information, in addition, receiving element 702A also can directly read pre-configured network side carrier configuration information from memory device.After obtaining network side carrier configuration information, determining unit 702B can adopt the mode of carrying out in network equipment described above to determine gap carrier wave in network side downstream transmission bandwidth or the position of useless subcarrier.Similarly, terminal equipment can not carry out the data manipulation such as data demodulates, decoding etc. to gap carrier wave or useless subcarrier, makes mistakes avoiding.
Next with reference to Fig. 8 to 11, describe according to the application's multi-carrier communications systems on the other hand and reduce method and the terminal equipment disturbing.
The multi-carrier communications systems according to an embodiment of the application as shown in Figure 8 reduces the method for disturbing can be carried out in terminal equipment.As shown in the figure, in step 8002, terminal equipment can obtain network side carrier configuration information, then, in step 8004, according to obtained network side carrier configuration information, the base band direct current carrier position of terminal equipment is configured to corresponding with gap carrier position in network side downstream transmission bandwidth.
Be appreciated that, can be when terminal equipment carries out Cell searching or while carrying out mobile management measurement of correlation or while reading network side system information or while reading network side broadcast message, from network equipment, obtain network side carrier configuration information, or, also can from memory device, directly read pre-configured network side carrier configuration information.
Due to according to method shown in Fig. 8, the base band direct current carrier position of terminal equipment is corresponding to gap carrier position in network side downstream transmission bandwidth, there is data receiver mistake at base band direct current carrier position in that therefore can avoid terminal equipment, guarantees the normal work of terminal equipment.
As mentioned above, in network side downstream transmission bandwidth, gap carrier position can be position, carrier wave boundary or each carrier wave center, therefore, in step 8004 as shown in Figure 8, the base band direct current carrier position of terminal equipment can be configured to corresponding with position, network side downstream transmission bandwidth intercarrier boundary or each carrier wave center.
Fig. 9 shows according to the multi-carrier communications systems of another embodiment of the application and reduces the method for disturbing, and wherein, step 9002 is similar with the step 8002 shown in Fig. 8, repeats no more herein.
For the base band direct current carrier position of terminal equipment is configured to corresponding with gap carrier position in network side downstream transmission bandwidth, in the step 9004 shown in Fig. 9, terminal equipment can be determined the base band direct current carrier position of terminal equipment, then in step 9006, according to the network side carrier configuration information obtaining in step 9002, regulate the local frequency of terminal equipment, so that the base band DC position of terminal equipment is corresponding with gap carrier position in network side downstream transmission bandwidth.
The local frequency that is appreciated that terminal equipment can regulate by specific control command, and control command can be digital signal, for example, 0001000, different indications represents different local frequencies.The network side carrier configuration information obtaining according to terminal equipment, by specific control command, the local frequency of adjustable terminal equipment, thus make the base band DC position of terminal equipment corresponding with gap carrier position in network side downstream transmission bandwidth.
By regulating the mode of terminal equipment local frequency, can easily realize the base band DC position of terminal equipment corresponding with gap carrier position in network side downstream transmission bandwidth, thereby the data receiver interference problem in reduction multi-carrier communications systems.
Figure 10 shows according to the terminal equipment 100 of an embodiment of the application, and wherein, terminal equipment 100 can comprise acquisition module 110 and configuration module 120.Acquisition module 110 can obtain network side carrier configuration information in multi-carrier communications systems.120 network side carrier configuration informations that can obtain according to acquisition module 110 of configuration module, are configured to corresponding with gap carrier position in network side downstream transmission bandwidth by the base band direct current carrier position of terminal equipment.
Similarly, in network side downstream transmission bandwidth, gap carrier position can be position, carrier wave boundary or each carrier wave center, therefore, 120 network side carrier configuration informations that can obtain according to acquisition module 110 of configuration module, are configured to the base band direct current carrier position of terminal equipment corresponding with position, network side downstream transmission bandwidth intercarrier boundary or each carrier wave center.
Figure 11 shows according to the terminal equipment 100 ' of another embodiment of the application.Terminal equipment 100 ' can comprise acquisition module 110 ' and configuration module 120 '.Similarly, acquisition module 110 ' can obtain network side carrier configuration information in multi-carrier communications systems.Configuration module 120 ' can further comprise determining unit 130 and control unit 140.Determining unit 130 can be determined the base band direct current carrier position of terminal equipment, the network side carrier configuration information that control unit 140 can obtain according to acquisition module 110 ', regulate the local frequency of terminal equipment, make the base band DC position of terminal equipment corresponding with gap carrier position in network side downstream transmission bandwidth.
With reference to accompanying drawing, the application's exemplary embodiment is described above.The example that it should be appreciated by those skilled in the art that above-mentioned embodiment to be only used to the object of explanation and lift, rather than be used for limiting.Any modification of doing under all instructions in the application and claim protection range, be equal to replacement etc., all should be included in the claimed scope of the application.
Claims (6)
1. multi-carrier communications systems reduces the method for disturbing, and comprising:
Obtain network side carrier configuration information;
According to described network side carrier configuration information, the base band direct current carrier position of terminal equipment is configured to corresponding with gap carrier position in network side downstream transmission bandwidth.
2. the method for claim 1, wherein the interior gap carrier position of network side downstream transmission bandwidth is position, carrier wave boundary or each carrier wave center.
3. the method for claim 1, wherein the step of the base band direct current carrier position of configurating terminal device comprises:
Determine the base band direct current carrier position of terminal equipment; And
According to described network side carrier configuration information, regulate the local frequency of terminal equipment, make the base band DC position of terminal equipment corresponding with gap carrier position in network side downstream transmission bandwidth.
4. terminal equipment, comprising:
Acquisition module, obtains network side carrier configuration information in multi-carrier communications systems;
Configuration module, according to described network side carrier configuration information, is configured to corresponding with gap carrier position in network side downstream transmission bandwidth by the base band direct current carrier position of described terminal equipment.
5. terminal equipment as claimed in claim 4, wherein, in network side downstream transmission bandwidth, gap carrier position is position, carrier wave boundary or each carrier wave center.
6. terminal equipment as claimed in claim 4, wherein, described configuration module further comprises:
Determining unit, determines the base band direct current carrier position of terminal equipment; And
Control unit, according to described network side carrier configuration information, regulates the local frequency of terminal equipment, makes the base band DC position of terminal equipment corresponding with gap carrier position in network side downstream transmission bandwidth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410328101.1A CN104113505B (en) | 2010-09-30 | 2010-09-30 | The method and terminal device of multi-carrier communications systems reduction interference |
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| CN201410328101.1A CN104113505B (en) | 2010-09-30 | 2010-09-30 | The method and terminal device of multi-carrier communications systems reduction interference |
| CN201010298078.8A CN102447662B (en) | 2010-09-30 | 2010-09-30 | Method and device for configuring subcarriers in multi-carrier communication system and terminal equipment |
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| CN201010298078.8A Division CN102447662B (en) | 2010-09-30 | 2010-09-30 | Method and device for configuring subcarriers in multi-carrier communication system and terminal equipment |
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