CN101516136A - Method for controlling channel allocation and information transmission under large bandwidth - Google Patents
Method for controlling channel allocation and information transmission under large bandwidth Download PDFInfo
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- CN101516136A CN101516136A CNA2008100052833A CN200810005283A CN101516136A CN 101516136 A CN101516136 A CN 101516136A CN A2008100052833 A CNA2008100052833 A CN A2008100052833A CN 200810005283 A CN200810005283 A CN 200810005283A CN 101516136 A CN101516136 A CN 101516136A
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Abstract
The invention discloses a method for controlling channel allocation and information transmission under large bandwidth, which comprises the following step that a transmitting terminal system compares the bandwidth capability of a transmitting terminal with that of the smallest terminal in the whole system according to the bandwidth capability of the smallest terminal in the whole system, and allocates control channel resource of corresponding bandwidth to the terminal. The method ensures that a control channel structure is simple, and solves the problems of the transmission of the large bandwidth, the reception of the small bandwidth and the coexisting compatibility of a plurality of bandwidth UEs.
Description
Technical field
The present invention relates to the communications field, the control channel that relates in particular under a kind of big bandwidth distributes and the control information sending method.
Background technology
At present, in the 4G field of wireless communication, usually the physical layer transmission technology that adopts is OFDM (OFDM, Orthogonal Frequency Division Multiplexing) technology, this transmission technology is with its higher availability of frequency spectrum, lower processing complexity becomes in the various descending schemes more promising a kind of.Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is the data flow transmission simultaneously on one group of mutually orthogonal subcarrier that the data flow of a two-forty is decomposed into several low rates.
Radio Resource in LTE (Long Term Evolution) system and the IMT-Advanced system is meant system or UE (subscriber equipment; also can be called terminal) time and the frequency resource that can take; can be that unit is distinguished with radio frames (radio frame); each radio frames is subdivided into a plurality of subframes (sub-frame); each subframe comprises a plurality of OFDM symbols again; add protection at interval further for each symbol, promptly introduce cyclic prefix CP (Cyclic Prefix).
For the power saving of UE end, control channel adopts TDM (time division multiplexing) mode usually, that is to say that control channel and Traffic Channel separate in time, 14 OFDM symbols are for example arranged in a subframe, preceding 3 OFDM symbols are as control channel, and back 11 OFDM symbols are as Traffic Channel.Control information all is the correctly necessary information of demodulation of receiving terminal, all will launch accurately.
At present, research for control channel is a focus, but for the emission of big bandwidth and the compatible research of the reception of little bandwidth and various bandwidth UE coexistence is less, the bandwidth ability of transmitting-receiving two-end support at present is identical, that is to say that terminal can receive whole bandwidth internal informations, then the control information reception is complete, can correctly demodulate control information; But inequality for the bandwidth ability that transmitting-receiving two-end is supported (all is the emission of big bandwidth and the reception of little bandwidth usually, its reason is that control information receives imperfect or receives complete and can not handle Wan), can not correctly demodulate control information, if and support also correctly demodulation control information of various bandwidth UE coexistence simultaneously, and the current just problem that will solve of this shortcoming.
Summary of the invention
The control channel that technical problem to be solved by this invention provides under a kind of big bandwidth distributes and the control information sending method, it is simple to make that the control channel structure realizes, solves the emission of big bandwidth and the reception and the compatible problem of various bandwidth UE coexistence of little bandwidth.
In order to address the above problem, the invention provides the control channel distribution method under a kind of big bandwidth,
Comprise that the transmitting terminal system is according to minimum terminal bandwidth ability in the whole system, the bandwidth ability of minimum terminal in transmitting terminal and the whole system is compared, distribute to the control channel resource of terminal respective bandwidth.
Further, said method also can comprise, described transmitting terminal system compares the bandwidth ability of minimum terminal in transmitting terminal and the whole system, distributes in the control channel resource of terminal respective bandwidth, also comprise,
If the transmitting terminal system bandwidth is smaller or equal to the bandwidth of minimum terminal, then transmitting terminal only need provide a complete control channel, distributes to terminal control channel resource;
If the transmitting terminal system bandwidth is greater than the bandwidth of minimum terminal, then five equilibrium grouping or not five equilibrium grouping are carried out in control information according to the bandwidth ability of minimum terminal in the whole system, and after the merging of the control information after will dividing into groups, distribute to the control channel resource of terminal respective bandwidth.
Further; said method also can comprise; described group forming criterion to the control information grouping is the Traffic Channel that group inner control information is independently indicated corresponding bandwidth range; or the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group; wherein, need to leave protection between group at interval.
The present invention also provides the control information sending method under a kind of big bandwidth,
Comprise that the transmitting terminal system compares the control channel resource of distributing to the terminal respective bandwidth according to the size of minimum terminal bandwidth in the whole system by the bandwidth ability to minimum terminal in transmitting terminal and the whole system, and terminal is sent control information.
Further, said method also can comprise, described transmitting terminal system compares the control channel resource of distributing to the terminal respective bandwidth to the bandwidth ability of minimum terminal in transmitting terminal and the whole system, during terminal is sent control information, also comprise,
If the transmitting terminal system bandwidth is smaller or equal to the bandwidth of minimum terminal, then transmitting terminal only need provide a complete control channel, distributes to terminal control channel resource, and terminal is sent control information;
If the transmitting terminal system bandwidth greater than the bandwidth of minimum terminal, is then carried out five equilibrium grouping or not five equilibrium grouping according to the bandwidth ability of minimum terminal to control information, and after the merging of the control information after will dividing into groups, terminal is sent control information.
Further; said method also can comprise; described group forming criterion to the control information grouping is the Traffic Channel that group inner control information is independently indicated corresponding bandwidth range; or the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group; wherein, need to leave protection between group at interval.
Further, said method can comprise that also described control information is sending in the frequency range continuously.
Further, said method also can comprise, after described transmitting terminal system sent control information to terminal, terminal was according to corresponding work frequency range receiving control information.
Compared with prior art, use the present invention, it is simple to make that the control channel structure realizes, solves the emission of big bandwidth and the reception and the compatible problem of various bandwidth UE coexistence of little bandwidth.
Description of drawings
Fig. 1 is a flow chart under the big bandwidth of the present invention and the control information sending method;
Fig. 2 is that branch such as control channel bandwidth is divided schematic diagram in the instantiation of the present invention;
Fig. 3 be in the instantiation of the present invention the control channel bandwidth not five equilibrium divide schematic diagram;
Fig. 4 is a control channel resource allocation schematic diagram in the instantiation of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Main design of the present invention is: the transmitting terminal system carries out five equilibrium grouping or not five equilibrium grouping according to minimum UE bandwidth ability in the whole system to control information, after by the control channel resource of distributing to the terminal respective bandwidth terminal being sent control information, terminal receives or handles the control information in the respective bandwidth.
As shown in Figure 1, the control information sending method under a kind of big bandwidth, concrete steps are as follows:
If the transmitting terminal system bandwidth is smaller or equal to the bandwidth of minimum terminal, then transmitting terminal only need provide a complete control channel, distributes to terminal control channel resource and gets final product.
Group forming criterion both can be the Traffic Channel that group inner control information is independently indicated corresponding bandwidth range, also can be the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group, needed to leave protection between group at interval.
Control information is to send in the frequency range continuously.
The invention will be further described below in conjunction with instantiation.
The maximum bandwidth of supposing the support of current system is 100MHz, and minimum UE bandwidth ability is 20MHz, and the bandwidth of UE end support also has 40MHz, 60MHz, 80MHz, 100MHz simultaneously.
When the system bandwidth of Node-B (Node B) end during smaller or equal to minimum UE bandwidth ability, Node-B only need design a complete control channel.
The UE end can all receive and can intactly demodulate corresponding control information at this moment.
When the system bandwidth of Node-B end during greater than minimum UE bandwidth; Node-B will carry out five equilibrium grouping or not five equilibrium grouping to control information according to minimum UE bandwidth ability; group forming criterion both can be the Traffic Channel that group inner control information is independently indicated corresponding bandwidth range; it also can be the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group; need to leave protection between group at interval; and then merge these groupings and launch; shown in Fig. 2,3, control information and resource allocation are divided into groups in continuous frequency range and are distributed.(wherein, A1, A2 represent UE information in a group among Fig. 4; B1, B2 represent UE information in a group; C represents UE information in a group)
If this moment UE end bandwidth ability when being minimum UE bandwidth ability, then as long as UE is according to corresponding work frequency range receiving control information.
If this moment UE end bandwidth ability during greater than minimum UE bandwidth ability, then UE respectively organizes control information as long as receive according to the corresponding work frequency range.
Above-mentioned example is not to emphasize to be divided into several groups, only is in order to illustrate.Understand easily, for other system bandwidth and UE bandwidth situation, technical scheme of the present invention is suitable equally.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1, the control channel distribution method under a kind of big bandwidth is characterized in that,
Comprise that the transmitting terminal system is according to minimum terminal bandwidth ability in the whole system, the bandwidth ability of minimum terminal in transmitting terminal and the whole system is compared, distribute to the control channel resource of terminal respective bandwidth.
2, the method for claim 1 is characterized in that,
Described transmitting terminal system compares the bandwidth ability of minimum terminal in transmitting terminal and the whole system, distributes in the control channel resource of terminal respective bandwidth, also comprise,
If the transmitting terminal system bandwidth is smaller or equal to the bandwidth of minimum terminal, then transmitting terminal only need provide a complete control channel, distributes to terminal control channel resource;
If the transmitting terminal system bandwidth is greater than the bandwidth of minimum terminal, then five equilibrium grouping or not five equilibrium grouping are carried out in control information according to the bandwidth ability of minimum terminal in the whole system, and after the merging of the control information after will dividing into groups, distribute to the control channel resource of terminal respective bandwidth.
3, method as claimed in claim 2 is characterized in that,
Described group forming criterion to control information grouping is the Traffic Channel that group inner control information independently indicate corresponding bandwidth range, or the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group, wherein, needs between group to leave and protects the interval.
4, the control information sending method under a kind of big bandwidth is characterized in that,
Comprise that the transmitting terminal system compares the control channel resource of distributing to the terminal respective bandwidth according to the size of minimum terminal bandwidth in the whole system by the bandwidth ability to minimum terminal in transmitting terminal and the whole system, and terminal is sent control information.
5, method as claimed in claim 4 is characterized in that,
Described transmitting terminal system compares the control channel resource of distributing to the terminal respective bandwidth to the bandwidth ability of minimum terminal in transmitting terminal and the whole system, during terminal is sent control information, also comprises,
If the transmitting terminal system bandwidth is smaller or equal to the bandwidth of minimum terminal, then transmitting terminal only need provide a complete control channel, distributes to terminal control channel resource, and terminal is sent control information;
If the transmitting terminal system bandwidth greater than the bandwidth of minimum terminal, is then carried out five equilibrium grouping or not five equilibrium grouping according to the bandwidth ability of minimum terminal to control information, and after the merging of the control information after will dividing into groups, terminal is sent control information.
6, method as claimed in claim 5 is characterized in that,
Described group forming criterion to control information grouping is the Traffic Channel that group inner control information independently indicate corresponding bandwidth range, or the Traffic Channel of the corresponding bandwidth range of control information joint instructions between group, wherein, needs between group to leave and protects the interval.
7, as claim 4,5 or 6 described methods, it is characterized in that,
Described control information is sending in the frequency range continuously.
8, as claim 4,5 or 6 described methods, it is characterized in that,
After described transmitting terminal system sent control information to terminal, terminal was according to corresponding work frequency range receiving control information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100052833A CN101516136A (en) | 2008-02-20 | 2008-02-20 | Method for controlling channel allocation and information transmission under large bandwidth |
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| CNA2008100052833A CN101516136A (en) | 2008-02-20 | 2008-02-20 | Method for controlling channel allocation and information transmission under large bandwidth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108366413A (en) * | 2017-01-26 | 2018-08-03 | 华为技术有限公司 | Terminal, the network equipment and communication means |
| CN108631926A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | A kind of method and communication equipment of communication |
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- 2008-02-20 CN CNA2008100052833A patent/CN101516136A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108366413A (en) * | 2017-01-26 | 2018-08-03 | 华为技术有限公司 | Terminal, the network equipment and communication means |
| US11172464B2 (en) | 2017-01-26 | 2021-11-09 | Huawei Technologies Co., Ltd. | Communication method and related apparatus |
| CN108631926A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | A kind of method and communication equipment of communication |
| CN108631926B (en) * | 2017-03-24 | 2020-12-22 | 华为技术有限公司 | Communication method and communication equipment |
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Open date: 20090826 |