CN102448176B - Resource regulating method in multi-carrier communications systems and scheduling of resource equipment - Google Patents
Resource regulating method in multi-carrier communications systems and scheduling of resource equipment Download PDFInfo
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- CN102448176B CN102448176B CN201010298069.9A CN201010298069A CN102448176B CN 102448176 B CN102448176 B CN 102448176B CN 201010298069 A CN201010298069 A CN 201010298069A CN 102448176 B CN102448176 B CN 102448176B
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Abstract
Provide the resource regulating method in a kind of multi-carrier communications systems and scheduling of resource equipment.This resource regulating method comprises: the ability information obtaining terminal; And according to described ability information, the base band DC position reception bandwidth of described terminal be configured in described reception bandwidth corresponds to the null subcarrier position in the transmitted bandwidth of base station, wherein, described ability information comprises frequency range and the maximum carrier number of described terminal in the frequency range supported of the support of described terminal, and the bandwidth of a descending carrier in described Base Transmitter bandwidth is not identical with the bandwidth of other descending carriers in described Base Transmitter bandwidth.According to resource regulating method and the equipment of the application, the situation that the DC position avoiding terminal is aimed at non-empty sub-carriers, efficiently solves the data receiver problem of terminal local oscillator leakage interference direct current carrier position.
Description
Technical field
The application relates to wireless communication technology, is specifically related to the resource regulating method in multi-carrier communications systems and scheduling of resource equipment.
Background technology
At present, in the band defined in 3GPP in continuous carrier polymerization (Intra-band contiguousCA) scene, for TDD, base station side aggregate bandwidth is 50MHz, and the aggregate bandwidth that end side has due to capabilities limits is only 40MHz.That is, base station side is by use 3 carrier waves, and current terminal grade supports at most 2 carrier waves.The problem that this asymmetry of base station and terminal will bring terminal normally cannot receive its base band direct current carrier position data.
Because DC position, the center subcarrier of carrier wave each in multi-carrier communications systems or carrier aggregation system is empty, and terminal is owing to adopting zero-if architecture, there is no intermediate frequency filtering, therefore, for some carrier wave collocation, to occur that terminal receives subcarrier corresponding to DC position not for empty, stronger local oscillator leakage will be had in direct current carrier position, the subcarrier reception of this position is impacted, not only can cause the garbled-reception of this subcarrier, also probably cause relevant Resource block to receive to make mistakes, affect the normal work of terminal.If what this carrier wave carried is important control information, the heavy losses of systematic function also may be caused.
Equally, for FDD, also there is such problem.
Summary of the invention
This application provides the resource regulating method in a kind of multi-carrier communications systems and scheduling of resource equipment, to solve base station and inconsistent the brought the problems referred to above of terminal bandwidth.
According to an aspect of the application, provide the resource regulating method in a kind of multi-carrier communications systems, comprising: the ability information obtaining terminal; And according to described ability information, the base band DC position reception bandwidth of described terminal be configured in described reception bandwidth corresponds to the null subcarrier position in the transmitted bandwidth of base station; Wherein, described ability information comprises frequency range and the maximum carrier number of terminal in the frequency range supported of terminal support; The bandwidth of a descending carrier in Base Transmitter bandwidth is not identical with the bandwidth of other descending carriers in Base Transmitter bandwidth.
According to the another aspect of the application, provide the scheduling of resource equipment in a kind of multi-carrier communications systems, comprising: acquisition module, obtain the ability information of terminal; And scheduler module, according to described ability information, the base band DC position reception bandwidth of described terminal be configured in described reception bandwidth corresponds to the null subcarrier position in the transmitted bandwidth of base station, wherein, described ability information comprises frequency range and the maximum carrier number of described terminal in the frequency range supported of the support of described terminal, and the bandwidth of a descending carrier in described Base Transmitter bandwidth is not identical with the bandwidth of other descending carriers in described Base Transmitter bandwidth.
In each execution mode of the application, the ability information of terminal can comprise frequency range and the maximum carrier number of described terminal in the frequency range supported of the support of described terminal.This ability information can report network side by described terminal by dedicated signaling, or is known from core net by network side.The reception bandwidth of terminal can be configured to be in the frequency range of described terminal support, and the carrier number that transmitted bandwidth corresponding with it comprises is not more than described maximum carrier number.Null subcarrier position comprises the center of each descending carrier and the position, boundary of every two adjacent carriers.
According to the scheme of the application, the situation that the DC position avoiding terminal is aimed at non-empty sub-carriers, efficiently solves the data receiver problem of terminal local oscillator leakage interference direct current carrier position.
Accompanying drawing explanation
Fig. 1 shows the resource regulating method according to the application's execution mode;
Fig. 2 shows an illustrative examples of the application;
Fig. 3 shows another illustrative examples of the application;
Fig. 4 shows the scheduling of resource equipment according to the application's execution mode.
Embodiment
Be described in conjunction with the scheme of exemplary execution mode to the application with reference to the accompanying drawings.
Fig. 1 shows the resource regulating method 100 according to the application's execution mode.As shown in the figure, in step S101, network side obtains ability (capability) information of terminal.This ability information such as can comprise frequency range and the maximum carrier number of terminal in band support of terminal support.This ability information can report network side by terminal by dedicated signaling (such as, RRC signaling), also can be obtained from core net by network side.
Then, in step S102, network side is configured according to the reception bandwidth of acquisition capability information to terminal, makes it receive the base band DC position in bandwidth corresponding to the null subcarrier position in the transmitted bandwidth of base station.The terminal base band DC position received in bandwidth is generally the center that terminal receives bandwidth.Null subcarrier position in Base Transmitter bandwidth can comprise the center of each descending carrier and the position, boundary of every two adjacent carriers.
Particularly, the reception bandwidth of terminal can be configured to be in the frequency range of terminal support by network side.When terminal supports multiple frequency range, network side can be selected to be configured to and be in one of them frequency range.Such as, can select according to the loading condition of frequency range each in current system.
According to the maximum carrier number of terminal in band support, the carrier number that the transmitted bandwidth that the reception bandwidth of terminal is configured to correspondence with it by network side comprises is not more than described maximum carrier number.Such as, when the maximum carrier number that terminal is supported in certain frequency range is 2, is received bandwidth and be configured to aim at 1 in BS transmitted bandwidth or 2 carrier waves.
According to said method, network side can according to the ability of terminal, by terminal scheduling in suitable frequency resource, the terminal baseband DC position correspondence system side be scheduled is made to issue the null subcarrier position of data, thus the data making terminal normally can receive network side to issue, avoid terminal direct current leakage interference downlink data and receive.
Above-mentioned configuration is set forth below in conjunction with specific embodiment.
embodiment 1 (TDD system)
As shown in Figure 2, base station is configured with three carrier waves in Band 40 (2300-2400MHz) frequency range, be respectively CC1 (20MHz), CC2 (20MHz) and CC3 (10MHz), terminal UE 1 and UE2 all support Band 40, and UE1 supports at most that in this frequency range two carrier waves receive, and UE2 supports at most a carrier wave in frequency range.
When UE1 and UE2 to report aforementioned capabilities information or network side from after core net obtains the aforementioned capabilities information of UE1 and UE2 to network side by such as RRC signaling, UE1 can be dispatched on CC1 and CC2 according to the ability of UE1 by base station, make UE1 receive base band DC position and be positioned at two carrier center positions, do not affect normal data reception, and according to the ability of UE2, UE2 can be dispatched on CC1, CC2 or CC3.If activated terminals major part is all support two carrier waves at most in base station, can preferentially UE2 be dispatched on CC3, realizes the load balancing of each carrier wave.
embodiment 2 (FDD system)
The difference of the system of FDD system and TDD is, in TDD system, the transmitted bandwidth of base station is identical with receive frequency, and in FDD system, base station then adopts different frequencies to transmit and receive.
As shown in Figure 3, base station is configured with three carrier waves in Band 7 (2500-2570/2620-2690MHz) frequency range, be respectively CC1 (20MHz), CC2 (20MHz) and CC3 (10MHz), 2620-2690MHz part is wherein transmitted bandwidth.Terminal UE 1 and UE2 all support Band 7, and UE1 supports at most that in this frequency range two carrier waves receive (R10), and UE2 supports at most a carrier wave (R8/R9) in frequency range.
When UE1 and UE2 to report aforementioned capabilities information or network side from after core net obtains the aforementioned capabilities information of UE1 and UE2 to network side by such as RRC signaling, UE1 can be dispatched on CC1 and CC2 according to the ability of UE1 by base station, make UE1 receive base band DC position and be positioned at two carrier center positions, do not affect normal data reception, and according to the ability of UE2, UE2 can be dispatched on CC1, CC2 or CC3.If the terminal major part initiating resource scheduling request in base station is all support two carrier waves at most, can preferentially UE2 be dispatched on CC3, realizes the load balancing of each carrier wave.
According to the another aspect of the application, provide the scheduling of resource equipment in a kind of multi-carrier communications systems.As shown in Figure 4, acquisition module 401 and scheduler module 402 is comprised according to the scheduling of resource equipment 400 of the application's execution mode.Wherein, acquisition module 401 obtains the ability information of terminal from terminal or core net.The ability information that scheduler module 402 obtains according to acquisition module 401, is configured the reception bandwidth of terminal, makes it receive the base band DC position in bandwidth corresponding to the null subcarrier position in the transmitted bandwidth of base station.
According to the execution mode of the application, the ability information that acquisition module 401 obtains such as can comprise frequency range and the maximum carrier number of terminal in band support of terminal support.This ability information can report network side by terminal by dedicated signaling (such as, RRC signaling), also can be obtained from core net by network side.The terminal base band DC position received in bandwidth is generally the center that terminal receives bandwidth.Null subcarrier position in Base Transmitter bandwidth can comprise the center of each descending carrier and the position, boundary of every two adjacent carriers.
The reception bandwidth of terminal can be configured to be in the frequency range of terminal support by scheduler module 402.When terminal supports multiple frequency range, network side can be selected to be configured to and be in one of them frequency range.Such as, can select according to the loading condition of frequency range each in current system.
According to the maximum carrier number of terminal in band support, the carrier number that the transmitted bandwidth that the reception bandwidth of terminal is configured to correspondence with it by scheduler module 402 comprises is not more than described maximum carrier number.Such as, when the maximum carrier number that terminal is supported in certain frequency range is 2, is received bandwidth and be configured to aim at 1 in BS transmitted bandwidth or 2 carrier waves.
According to said method, network side can according to the ability of terminal, by terminal scheduling in suitable frequency resource, the terminal baseband DC position correspondence system side be scheduled is made to issue the null subcarrier position of data, thus the data making terminal normally can receive network side to issue, avoid terminal direct current leakage interference downlink data and receive.
Claims (10)
1. the resource regulating method in multi-carrier communications systems, comprising:
Obtain the ability information of terminal; And
According to described ability information, the base band DC position reception bandwidth of described terminal be configured in described reception bandwidth corresponds to the null subcarrier position in the transmitted bandwidth of base station, wherein, described ability information comprises frequency range and the maximum carrier number of described terminal in the frequency range supported of described terminal support;
The bandwidth of a descending carrier in described Base Transmitter bandwidth is not identical with the bandwidth of other descending carriers in described Base Transmitter bandwidth.
2. the method for claim 1, comprises further:
The reception bandwidth of described terminal is configured to be in the frequency range of described terminal support; And
The carrier number that the transmitted bandwidth reception bandwidth of described terminal being configured to correspondence with it comprises is not more than described maximum carrier number.
3. the method for claim 1, wherein described null subcarrier position comprises the center of each descending carrier and the position, boundary of every two adjacent carriers.
4. the method for claim 1, wherein described ability information reports network side by described terminal by dedicated signaling.
5. the method for claim 1, wherein described ability information is known from core net by network side.
6. the scheduling of resource equipment in multi-carrier communications systems, comprising:
Acquisition module, obtains the ability information of terminal; And
Scheduler module, according to described ability information, the base band DC position reception bandwidth of described terminal be configured in described reception bandwidth corresponds to the null subcarrier position in the transmitted bandwidth of base station, wherein, described ability information comprises frequency range and the maximum carrier number of described terminal in the frequency range supported of the support of described terminal, and the bandwidth of a descending carrier in described Base Transmitter bandwidth is not identical with the bandwidth of other descending carriers in described Base Transmitter bandwidth.
7. scheduling of resource equipment as claimed in claim 6, the reception bandwidth of described terminal is configured to be in the frequency range of described terminal support by described scheduler module further; And the carrier number that the transmitted bandwidth reception bandwidth of described terminal being configured to correspondence with it comprises is not more than described maximum carrier number.
8. scheduling of resource equipment as claimed in claim 6, wherein, described null subcarrier position comprises the center of each descending carrier and the position, boundary of every two adjacent carriers.
9. scheduling of resource equipment as claimed in claim 6, wherein, described acquisition module obtains the described ability information that described terminal is reported by dedicated signaling.
10. scheduling of resource equipment as claimed in claim 6, wherein, described acquisition module obtains described ability information from core net.
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| CN201010298069.9A CN102448176B (en) | 2010-09-30 | 2010-09-30 | Resource regulating method in multi-carrier communications systems and scheduling of resource equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014003612A1 (en) * | 2012-06-27 | 2014-01-03 | Telefonaktiebolaget L M Ericsson (Publ) | A user equipment supporting communication in a multicarrier radio communication system and a method therein for receiving information |
| CN104955151A (en) * | 2014-03-24 | 2015-09-30 | 中兴通讯股份有限公司 | Scheduling request processing method, communication node and communication system |
| CN105577337A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | Downlink signal sending and receiving methods and downlink signal sending and receiving devices |
| CN105722066A (en) * | 2014-12-03 | 2016-06-29 | ***通信集团公司 | Terminal capability information reporting and resource allocation methods, systems and related devices |
| EP3286865B1 (en) | 2015-04-20 | 2020-11-11 | Telefonaktiebolaget LM Ericsson (PUBL) | Handling dc subcarrier in narrow bandwidth communications |
| CA3026448C (en) * | 2016-07-28 | 2021-11-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Communication method, network equipment, and terminal equipment |
| CN110115053B (en) | 2016-12-28 | 2022-02-15 | Oppo广东移动通信有限公司 | Information sending method, information receiving method, device and system |
| WO2019075876A1 (en) * | 2017-10-20 | 2019-04-25 | 华为技术有限公司 | Resource scheduling method and terminal device |
| CN110753341A (en) * | 2018-07-23 | 2020-02-04 | 华为技术有限公司 | Resource allocation method and device |
| CN114745782A (en) * | 2021-01-07 | 2022-07-12 | 维沃移动通信有限公司 | Direct current position processing method and related equipment |
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| GB2459504B (en) * | 2008-04-25 | 2010-06-16 | Ipwireless Inc | Wireless communication unit and method for channel estimation |
| CN102438320B (en) * | 2010-09-29 | 2015-03-11 | 电信科学技术研究院 | Downlink dispatching information configuring method and equipment |
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| CN101389054A (en) * | 2007-09-11 | 2009-03-18 | 大唐移动通信设备有限公司 | Multi-carrier resource allocation method, system and a network side |
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