CN101309221A - Method and apparatus for control forward and backward compatibility of channel under high bandwidth - Google Patents
Method and apparatus for control forward and backward compatibility of channel under high bandwidth Download PDFInfo
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- CN101309221A CN101309221A CN 200810125391 CN200810125391A CN101309221A CN 101309221 A CN101309221 A CN 101309221A CN 200810125391 CN200810125391 CN 200810125391 CN 200810125391 A CN200810125391 A CN 200810125391A CN 101309221 A CN101309221 A CN 101309221A
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Abstract
The invention discloses a method and a device which control the channel to be forwards and backwards compatible under high bandwidth; wherein, the method includes that the requirement about the frequency range resource of the LTE system in the prior edition is acquired; the frequency range resource which satisfies the requirement is distributed to the LTE system in the prior edition from the high bandwidth; the residual frequency range resource in the high bandwidth is distributed to the LTE system in the current edition. The method and the device control the channel to be forwards and backwards compatible.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and apparatus of control forward and backward compatibility of channel under high bandwidth.
Background technology
LTE (Long-Term Evolution, Long Term Evolution)/LTE-Advanced system and IMT-Advanced (International Mobile Telecommunications, international mobile communication) system all is with OFDM (Orthogonal Frequency DivisionMultiplexing, OFDM) technology is the basis, in ofdm system, it is the data mode of time-frequency bidimensional, for UE (User Equipment, subscriber equipment) end power saving, control channel adopts TDM (Time Division Multiplex usually, time division multiplexing) mode, that is, control channel and Traffic Channel are separated in time, for example, 14 OFDM symbols are arranged in a subframe, and preceding 3 OFDM symbols are as control channel, and back 11 OFDM symbols are as Traffic Channel.
In existing system, the user who often allow to insert is more, and at first the control channel with present LTE system is that example describes.In the LTE system, descending control signaling mainly comprises following content:
1) CCFI (Control Channel Format Indicator, the indication of control channel form);
2) DL Grant (Down Link Grant, descending scheduling mandate);
3) UL Grant (Up Link Grant, uplink scheduling authorization);
4) HI:HARQ indication (Hybrid Automatic Repeat Request Indication mixes automatic repeat requests indication);
As can be seen, the design of control channel is to be made of different parts, and each part all has its specific function.For convenience of description, define several terms and agreement below:
1) indicating several OFDM symbols to be used for control channel is CCFI, independent with CCE (ControlChannels Elements, control channel unit); HI is also independent with CCE;
2) be called CCE at the continuous L of a frequency domain subcarrier, CCE can comprise DL Grant and UL Grant;
3) all CCE are the QPSK modulation;
4) each control channel is by a CCE or CCE constitutes;
5) each UE can monitor a series of candidate control channels;
6) number of candidate control channel is the maximum times of blind Detecting;
7) number of candidate's control channel is greater than the number of CCE;
8) transmitting-receiving two-end provides several combinations, for example has only 1,2,4,8 CCE to combine as the candidate control channel;
9) the corresponding different coding speed of 1,2,4,8 combination difference;
Fig. 1 is the schematic diagram according to the transmitter architecture of correlation technique, as shown in Figure 1, hold at Node-B (enode), each UE (UE 1 is to UEn) control signaling is carried out chnnel coding respectively, carry out the QPSK modulation then, carry out CCE to RE (ResourseElement, subcarrier) forms E-CCFI, carry out the subcarrier mapping then, space diversity, carry out IFFT (Inverse Fast Fourier Transform, inverse-Fourier transform) adds CP, parallel/serial DAC, and launch, suppose that this moment, control channel was made of 16 CCE, receiving terminal carries out FFT (Fast Fourier Transform, Fourier transform) after, UE begins to carry out blind Detecting (promptly respectively to CCE1 from being combined as 1 CCE, CCE2, ..., CCE16 carries out blind Detecting), if UE_ID does not monitor success, then carry out blind Detecting (promptly respectively to [CCE1 CCE2] from being combined as 2 CCE, [CCE3 CCE4], ..., [CCE15CCE16]), and the like.If all do not listen to the UE_ID that is complementary with oneself in whole blind detection process, illustrating does not have one's own control signaling to assign this moment, and then UE switches to sleep pattern; If listen to the UE_ID that is complementary with oneself, afterwards according to the corresponding business information of control signal demodulation.Because it is travel through all CCE combined situation, too much for the blind Detecting number of times of some UE as can be seen.
In LTE/LTE-Advanced and IMT-Advanced system, support QPSK, 16QAM, 64QAM modulation system, and much all be identical in the modulation system of a plurality of UE of synchronization, if all launch this information in the control signaling of each UE, so just increased the expense of control signaling.But can be placed on E-CCFI (Enhanced-Control Channel Format Indicator to what have an identical modulation system, strengthen the indication of control channel form) lining, content in the E-CCFI comprises the maximum sequence number of the CCE of professional modulation system and correspondence, transmitting terminal only is mapped in the UE that each has the identical services modulation system in the corresponding CCE serial number range deserved CCE, can reduce the blind Detecting time like this; And the CCE of the identical more UE of modulation system this moment is placed on front or centre or back, can further reduces the blind Detecting time of most of UE like this.E-CCFI promptly reduces the control signaling consumption, and can reduce number of times, reduction UE end handling process and the power loss of UE end blind Detecting to a certain extent.
Fig. 2 is that as shown in Figure 2, the control information form of expanding among the E-CCFI is made of two parts according to the schematic diagram of the E-CCFI composition of correlation technique, professional maximum sequence number of CCE and the indication of professional modulation system of adopting different modulation systems respectively, wherein,
CCFI: the number that is used to indicate the shared OFDM symbol of control channel;
N1: the maximum sequence number of CCE under following/up M1 modulation system;
M1: the modulation system of following/Traffic Channel that up frequency of utilization is the highest;
N2: the maximum sequence number of CCE under following/up M2 modulation system;
M2: down/modulation system of the Traffic Channel that up frequency of utilization is time high;
N3: the maximum sequence number of CCE under following/up the 3rd kind of modulation system;
N4: on/descending m1 modulation system under the maximum sequence number of CCE;
M1: on/modulation system of the Traffic Channel that descending frequency of utilization is the highest;
N5: on/descending m2 modulation system under the maximum sequence number of CCE;
M2: on/modulation system of the Traffic Channel that descending frequency of utilization is time high;
N6: on/descending the 3rd kind of modulation system under the maximum sequence number of CCE.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: at present, content for the control signaling, the method of salary distribution, the research that reduces the control signaling consumption is a focus, but, do not consider control channel front/rear to compatibling problem, promptly, the compatibling problem of LTE system and LTE-Advanced system under the big bandwidth, for example, original system bandwidth maximum is supported 20MHz, and the existing system bandwidth requirement reaches 40MHz or wideer bandwidth, does not wherein carry out discussing and research about the forward and backward compatibility problem of control channel.
Summary of the invention
The present invention aims to provide a kind of method and apparatus of control forward and backward compatibility of channel under high bandwidth, does not consider the compatibling problem of LTE system and LTE-Advanced system control channel under the big bandwidth to solve prior art.
A kind of method of control forward and backward compatibility of channel under high bandwidth is provided according to an aspect of the present invention.
Method according to the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention comprises: the LTE system of version is about the demand of the resource of frequency range before obtaining; From big bandwidth, distribute the resource of frequency range that satisfies the demands to give the LTE system of preceding version; The remaining resource of frequency range in the big bandwidth is distributed to the LTE system of current version.
Preferably, said method also comprises: emission CCFI information in the control channel of the resource of frequency range that the LTE of preceding version system uses; Emission E-CCFI information in the control channel of the resource of frequency range that the LTE of current version system uses.
Preferably, said method also comprises: if the resource of frequency range that the LTE system of version uses before being linked into, then demodulation CCFI information and phase related control information thereof; If be linked into the resource of frequency range that the LTE system of current version uses, then demodulation E-CCFI information and phase related control information thereof.
A kind of device of control forward and backward compatibility of channel under high bandwidth is provided according to a further aspect in the invention.
Device according to the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention comprises: acquisition module, and the LTE system of version is about the demand of the resource of frequency range before being used to obtain; First distribution module is used for distributing the resource of frequency range that satisfies the demands to give the LTE system of preceding version from big bandwidth; Second distribution module is used for the remaining resource of frequency range of big bandwidth is distributed to the LTE system of current version.
Preferably, said apparatus also comprises: first transmitter module is used for the control channel emission CCFI information in the resource of frequency range of the LTE of preceding version system use; Second transmitter module is used for the control channel emission E-CCFI information in the resource of frequency range of the LTE of current version system use.
Preferably, said apparatus also comprises: first demodulation module, if the resource of frequency range that the LTE system of version uses before being used for being linked into, then demodulation CCFI information and phase related control information thereof; Second demodulation module is if be used for being linked into the resource of frequency range that the LTE system of current version uses, then demodulation E-CCFI information and phase related control information thereof.
Above embodiment adopts the LTE system that distributes the resource of frequency range to give the LTE system current version of preceding version, overcome prior art and do not considered the compatibling problem of LTE system and LTE-Advanced system control channel under the big bandwidth, and then reached the effect of control forward and backward compatibility of channel under high bandwidth.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the transmitter architecture of correlation technique;
Fig. 2 is the schematic diagram according to the E-CCFI composition of correlation technique;
Fig. 3 is the flow chart according to the method for the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention;
Fig. 4 is the schematic diagram of dividing according to the 100MHz bandwidth of the embodiment of the invention;
Fig. 5 is the block diagram according to the device of the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Method embodiment
According to embodiments of the invention, provide a kind of method of control forward and backward compatibility of channel under high bandwidth.Fig. 3 is the flow chart according to the method for the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention, and as shown in Figure 3, this method comprises:
Step S302, the LTE system of version is about the demand of the resource of frequency range before obtaining;
Step S304 distributes the resource of frequency range that satisfies the demands to give the LTE system of preceding version from big bandwidth;
Step S306 distributes to the remaining resource of frequency range in the big bandwidth LTE system of current version.
The LTE system of the LTE system of version and current version can allocation of channel resources may under big bandwidth before this embodiment made.
Preferably, said method also comprises: emission CCFI information in the control channel of the resource of frequency range that the LTE of preceding version system uses; Emission E-CCFI information in the control channel of the resource of frequency range that the LTE of current version system uses.The preferred embodiment is used for transmitting terminal emission information.
Preferably, said method also comprises: if the resource of frequency range that the LTE system of version uses before being linked into, then demodulation CCFI information and phase related control information thereof; If be linked into the resource of frequency range that the LTE system of current version uses, then demodulation E-CCFI information and phase related control information thereof.The preferred embodiment is used for the receiving terminal demodulating information.
Describe the method for control forward and backward compatibility of channel under high bandwidth provided by the invention in detail below in conjunction with instantiation.This method comprises the steps:
The first step: Node-B acquiescence is the center frequency range or certain frequency range initially inserts frequency range as UE, and distribute this moment (promptly to the LTE system, the LTE system of version before above-mentioned) frequency range of using and the frequency range of using for LTE-Advanced system (that is the LTE system of above-mentioned current version);
Fig. 4 is the schematic diagram of dividing according to the 100MHz bandwidth of the embodiment of the invention, as shown in Figure 4, distributing a part of resource under big bandwidth uses for the LTE system, for example, distribute 20MHz resource wherein to use for the LTE system, the UE that is used for the LTE system inserts, and only launches CCFI information in the control channel in this 20MHz; The remaining 80MHz resource of frequency range in the big bandwidth is distributed to the LTE-Advanced system, the control channel emission E-CCFI information in the bandwidth range of the UE that can insert the LTE-Advanced system;
Need to prove, which 20MHz resource allocation that concrete is gives the LTE can the self adaptation adjustment, can give tacit consent to the center frequency range or certain frequency range initially inserts frequency range as UE, can know which part allocated bandwidth to the LTE system according to system information after UE inserts, which part allocated bandwidth is given the LTE-Advanced frequency range;
Second step: emission CCFI information in the control channel in the frequency range that the LTE system uses; And emission E-CCFI information in the control channel in the frequency range of LTE-Advanced; Particularly, only launch CCFI information in the control channel in above-mentioned 20MHz, emission E-CCFI information in the control channel of the 80MHz in the bandwidth range of the UE that can insert the LTE-Advanced system;
Transmitting terminal all is to launch CCFI information in which frequency range always, and transmitting terminal is not launched the control information of expanding among the E-CCFI, and the respective sub position is used to launch CCE information; If the control information of expanding among the transmitting terminal emission E-CCFI, the respective sub position is used for launching the control information that E-CCFI expands, and other sub-carrier positions are used to launch CCE information;
The 3rd step: UE carries out the demodulation of control channel according to the working frequency range of this moment, if be operated in LTE frequency range, then demodulation CCFI information and other control informations this moment; If be operated in the LTE-Advanced frequency range this moment, then demodulation E-CCFI information and other control informations;
For receiving terminal, the subcarrier that at first will extract the CCFI relevant position carries out demodulation, because receiving terminal knows own access this moment is for which frequency range, so receiving terminal also just knows oneself whether to need demodulation E-CCFI information.
In sum, adopt method of the present invention, compared with prior art, make that two kinds of structures of CCFI and E-CCFI are compatible at new-old system, can accomplish the self adaptation emission of good CCFI and two kinds of structures of E-CCFI, make that system's forward and backward compatibility problem is solved.
Device embodiment
According to embodiments of the invention, provide a kind of device of control forward and backward compatibility of channel under high bandwidth.Fig. 5 is the block diagram according to the device of the control forward and backward compatibility of channel under high bandwidth of the embodiment of the invention, and as shown in Figure 5, this device comprises:
The LTE system of the LTE system of version and current version can allocation of channel resources may under big bandwidth before this embodiment made.
Preferably, said apparatus also comprises: first transmitter module is used for the control channel emission CCFI information in the resource of frequency range of the LTE of preceding version system use; Second transmitter module is used for the control channel emission E-CCFI information in the resource of frequency range of the LTE of current version system use.The preferred embodiment is used for transmitting terminal emission information.
Preferably, said apparatus also comprises: first demodulation module, if the resource of frequency range that the LTE system of version uses before being used for being linked into, then demodulation CCFI information and phase related control information thereof; Second demodulation module is if be used for being linked into the resource of frequency range that the LTE system of current version uses, then demodulation E-CCFI information and phase related control information thereof.The preferred embodiment is used for the receiving terminal demodulating information.
Above embodiment adopts the LTE system that distributes the resource of frequency range to give the LTE system current version of preceding version, overcome prior art and do not considered the compatibling problem of LTE system and LTE-Advanced system control channel under the big bandwidth, and then reached the effect of control forward and backward compatibility of channel under high bandwidth.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.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 (6)
1. the method for a control forward and backward compatibility of channel under high bandwidth is characterized in that, comprising:
The long evolving system of version is about the demand of the resource of frequency range before obtaining;
From described big bandwidth, distribute the resource of frequency range that satisfies described demand to give the long evolving system of described preceding version;
The remaining resource of frequency range in the described big bandwidth is distributed to the long evolving system of current version.
2. method according to claim 1 is characterized in that, also comprises:
Emission control channel format indication information in the control channel of the resource of frequency range that the long evolving system of version uses before described;
Emission strengthens control channel form indication information in the control channel of the resource of frequency range that the long evolving system of described current version uses.
3. method according to claim 2 is characterized in that, also comprises:
If be linked into the resource of frequency range that the long evolving system of described preceding version uses, then demodulation described control channel form indication information and phase related control information thereof;
If be linked into the resource of frequency range that the long evolving system of described current version uses, then the described enhancing control channel of demodulation form indication information and phase related control information thereof.
4. the device of a control forward and backward compatibility of channel under high bandwidth is characterized in that, comprising:
Acquisition module, the long evolving system of version is about the demand of the resource of frequency range before being used to obtain;
First distribution module is used for distributing the resource of frequency range that satisfies described demand to give the long evolving system of described preceding version from described big bandwidth;
Second distribution module is used for the remaining resource of frequency range of described big bandwidth is distributed to the long evolving system of current version.
5. device according to claim 4 is characterized in that, also comprises:
First transmitter module is used for the control channel emission control channel format indication information of the resource of frequency range that the long evolving system of version before described uses;
Second transmitter module, the control channel emission that is used for the resource of frequency range used at the long evolving system of described current version strengthens control channel form indication information.
6. device according to claim 5 is characterized in that, also comprises:
First demodulation module, if be used for being linked into described before the resource of frequency range used of the long evolving system of version, then demodulation described control channel form indication information and phase related control information thereof;
Second demodulation module is if be used for being linked into the resource of frequency range that the long evolving system of described current version uses, the then described enhancing control channel of demodulation form indication information and phase related control information thereof.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810125391 CN101309221B (en) | 2008-06-20 | 2008-06-20 | Method and apparatus for control forward and backward compatibility of channel under high bandwidth |
| PCT/CN2009/072228 WO2009152741A1 (en) | 2008-06-20 | 2009-06-11 | Method and apparatus for forward and backward directions compatibility of control channel under high bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810125391 CN101309221B (en) | 2008-06-20 | 2008-06-20 | Method and apparatus for control forward and backward compatibility of channel under high bandwidth |
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| Publication Number | Publication Date |
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| CN101309221A true CN101309221A (en) | 2008-11-19 |
| CN101309221B CN101309221B (en) | 2012-02-08 |
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| CN 200810125391 Expired - Fee Related CN101309221B (en) | 2008-06-20 | 2008-06-20 | Method and apparatus for control forward and backward compatibility of channel under high bandwidth |
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| WO (1) | WO2009152741A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152741A1 (en) * | 2008-06-20 | 2009-12-23 | 中兴通讯股份有限公司 | Method and apparatus for forward and backward directions compatibility of control channel under high bandwidth |
| WO2010105407A1 (en) * | 2009-03-17 | 2010-09-23 | 华为技术有限公司 | Method, terminal, and access network node for sharing resources |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1809998A (en) * | 2003-06-17 | 2006-07-26 | 皇家飞利浦电子股份有限公司 | Coordinating radio resource usage in unlicensed frequency bands |
| KR101152460B1 (en) * | 2005-11-04 | 2012-07-03 | 인하대학교 산학협력단 | Resource management method and system in a wireless communication system |
| CN101296475B (en) * | 2007-04-29 | 2012-10-17 | 华为技术有限公司 | Resource allocation method of communication system and wireless network system |
| CN101309221B (en) * | 2008-06-20 | 2012-02-08 | 中兴通讯股份有限公司 | Method and apparatus for control forward and backward compatibility of channel under high bandwidth |
| CN101296008B (en) * | 2008-06-23 | 2013-08-07 | 中兴通讯股份有限公司 | Self-adapting emission method and apparatus for control channel |
-
2008
- 2008-06-20 CN CN 200810125391 patent/CN101309221B/en not_active Expired - Fee Related
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2009
- 2009-06-11 WO PCT/CN2009/072228 patent/WO2009152741A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152741A1 (en) * | 2008-06-20 | 2009-12-23 | 中兴通讯股份有限公司 | Method and apparatus for forward and backward directions compatibility of control channel under high bandwidth |
| WO2010105407A1 (en) * | 2009-03-17 | 2010-09-23 | 华为技术有限公司 | Method, terminal, and access network node for sharing resources |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101309221B (en) | 2012-02-08 |
| WO2009152741A1 (en) | 2009-12-23 |
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Application publication date: 20081119 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Method and apparatus for control forward and backward compatibility of channel under high bandwidth Granted publication date: 20120208 License type: Common License Record date: 20151123 |
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