CN101296008B - Self-adapting emission method and apparatus for control channel - Google Patents
Self-adapting emission method and apparatus for control channel Download PDFInfo
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Abstract
The invention provides a method for controlling self-adaptive transmission of channels and a device thereof, wherein, the method includes the steps: extension control information in the format indication of an enhanced control channel is configured or not configured in the transmitting information including the format indicating information of a control channel; when the transmitting information is transmitted, whether the extension control information in the format indication of the enhanced control channel is configured in the transmitting information is implicitly represented according to a scheduled implicit expression mode. The method and the device of the invention realize good self-adaptive transmission of two structures of CCFI and E-CCFI, thus solving the forward-backward compatibility problem of the system.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and apparatus of control channel self adaptation emission.
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 has its specific function.For convenience of description, define several terms and agreement below:
1) CCFI namely indicates several OFDM symbols to be used for control channel, and is 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 control channel is greater than the number of CCE;
8) transmitting-receiving two-end has been stipulated 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 (UE1 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 (namely 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 (namely respectively to [CCE1CCE2] from being combined as 2 CCE, [CCE3CCE4], ..., [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 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 namely 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, the 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, the signaling consumption of research control to(for) content, the method for salary distribution, the minimizing of control signaling is a focus, but, do not consider effective control channel self adaptation emission, for example, CCFI is all the time in emission in the original system, or the E-CCFI control information is all the time in emission in the improved system, but, launch the self adaptation emission of CCFI structure and E-CCFI structure in other words at the control information self adaptation of expanding among the E-CCFI and do not carry out discussing and research.
Summary of the invention
The present invention aims to provide a kind of method and apparatus of control channel self adaptation emission, does not consider the problem of effective control channel self adaptation emission to solve prior art.
A kind of method of control channel self adaptation emission is provided according to an aspect of the present invention.
The method of launching according to the control channel self adaptation of the embodiment of the invention comprises: arrange or do not arrange the control information that strengthens expansion in the indication of control channel form in the emission information that comprises control channel form indication information; When the above-mentioned emission information of emission, represent implicitly according to predetermined implicit representation mode whether emission information arranges the control information that strengthens expansion in the indication of control channel form.
Preferably, said method also comprises: receive emission information; Determine according to the implicit representation mode whether emission information comprises the control information that strengthens expansion in the indication of control channel form; According to the definite emission of demodulation as a result information.
Preferably, the implicit representation mode specifically comprises: do not comprise the control information that strengthens expansion in the indication of control channel form if control channel form indicated value, is then represented emission information less than 3; If control channel form indicated value equals 3, represent that then emission information comprises the control information that strengthens expansion in the indication of control channel form.
Preferably, the implicit representation mode specifically comprises: do not comprise the control information that strengthens expansion in the indication of control channel form if system bandwidth, is then represented emission information less than preset value; If system bandwidth, is then represented emission information more than or equal to preset value and is comprised the control information that strengthens expansion in the indication of control channel form.Preferably, preset value is 40MHz.
A kind of device of control channel self adaptation emission is provided according to a further aspect in the invention.
The device of launching according to the control channel self adaptation of the embodiment of the invention comprises: module is set, is used for arranging or do not arrange the control information of expanding in the indication of enhancing control channel form in the emission information that comprises control channel form indication information; Representation module is used for representing implicitly according to predetermined implicit representation mode whether emission information arranges the control information that strengthens expansion in the indication of control channel form when the above-mentioned emission information of emission.
Preferably, said apparatus also comprises: receiver module is used for receiving emission information; Determination module is used for determining according to the implicit representation mode whether emission information comprises the control information that strengthens control channel form indication expansion; Demodulation module is used for according to determining the emission of demodulation as a result information.
Preferably, the implicit representation mode that representation module is represented specifically comprises: do not comprise the control information that strengthens expansion in the indication of control channel form if control channel form indicated value, is then represented emission information less than 3; If control channel form indicated value equals 3, represent that then emission information comprises the control information that strengthens expansion in the indication of control channel form.
Preferably, the implicit representation mode that representation module is represented specifically comprises: do not comprise the control information that strengthens expansion in the indication of control channel form if system bandwidth, is then represented emission information less than preset value; If system bandwidth, is then represented emission information more than or equal to preset value and is comprised the control information that strengthens expansion in the indication of control channel form.Preferably, preset value is 40MHz.
Above embodiment adopts agreement implicit representation mode to handle emission information, overcome prior art and do not considered the problem that effective control channel self adaptation is launched, and then reached 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.
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 for explaining the present invention, do not constitute improper restriction 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 channel self adaptation emission of the embodiment of the invention;
Fig. 4 is the flow chart of the transmitting-receiving two-end work of the control information self adaptation emission expanded among the E-CCFI according to the embodiment of the invention;
Fig. 5 is the block diagram according to the device of the control channel self adaptation emission 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 channel self adaptation emission.Fig. 3 is that as shown in Figure 3, this method comprises according to the flow chart of the method for the control channel self adaptation emission of the embodiment of the invention:
Step S302 arranges or does not arrange the control information that strengthens expansion in the indication of control channel form in the emission information that comprises control channel form indication information;
Step S304 when the above-mentioned emission information of emission, represents implicitly according to predetermined implicit representation mode whether emission information arranges the control information that strengthens expansion in the indication of control channel form.
This embodiment is applied to transmitting terminal and adopts agreement implicit representation mode to handle emission information, overcome prior art and do not considered the problem that effective control channel self adaptation is launched, and then reached 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.
Preferably, said method also comprises: receive emission information; Determine according to the implicit representation mode whether emission information comprises the control information that strengthens expansion in the indication of control channel form; According to the definite emission of demodulation as a result information.The preferred embodiment is applied to receiving terminal, adopts agreement implicit representation mode to handle emission information.
Wherein, the implicit representation mode can comprise one of following mode:
(1) if, then representing emission information less than 3, control channel form indicated value do not comprise the control information that strengthens expansion in the indication of control channel form; If control channel form indicated value equals 3, represent that then emission information comprises the control information that strengthens expansion in the indication of control channel form.
(2) if, then representing emission information less than preset value, system bandwidth do not comprise the control information that strengthens expansion in the indication of control channel form; If system bandwidth, is then represented emission information more than or equal to preset value and is comprised the control information that strengthens expansion in the indication of control channel form.Wherein, preset value is 40MHz.
Describe the method for control channel self adaptation emission provided by the invention in detail below in conjunction with instantiation.The method of the control information self adaptation emission of expanding among the E-CCFI of the present invention is as follows:
Transmitting terminal (Node-B) is launched CCFI information always, and transmitting terminal implicitly notifies receiving terminal whether to launch the control information of expanding among the E-CCFI, predetermined implicit representation mode is specially: if the CCFI value is less than 3 at this moment, the control information of expanding among the E-CCFI has not been launched in expression, and the respective sub position is used for emission CCE information; If this moment, the CCFI value equaled 3, the control information of expanding among the E-CCFI has been launched in expression, and other sub-carrier positions are used for emission CCE information.
Fig. 4 is the flow chart of the transmitting-receiving two-end work of the control information self adaptation emission expanded among the E-CCFI according to the embodiment of the invention; As shown in Figure 4, this method comprises the steps:
Step S402 judges whether the value of CCFI equals 3; Be under the situation that is in judged result, proceed to step S404, judged result for situation not under, proceed to step S406;
Step S404, this moment, the CCFI value equaled 3, and the control information of expanding among the E-CCFI has been launched in expression, and other sub-carrier positions are used for emission CCE information, the control information of namely expanding among E-CCFI mapping back emission;
Step S406, this moment, the CCFI value was not equal to 3, but less than 3, the control information of expanding among the E-CCFI has not been launched in expression, the respective sub position is used for emission CCE information, i.e. CCFI information mapping back emission;
Step S408, the subcarrier that receiving terminal (UE) at first will extract the CCFI relevant position carries out demodulation;
Step S410 judges according to demodulation result whether the value of CCFI equals 3, is under the situation that is in judged result, proceeds to step S412, is under the situation not in judged result, proceeds to step S414;
Step S412, this moment, the CCFI value equaled 3, and what the respective sub position represented is the control information of expanding among the E-CCFI;
Step S414, this moment, the CCFI value was not equal to 3, but less than 3, what the respective sub position represented is CCE information.
To sum up, adopt the method for the invention, compared with prior art, can accomplish the control information self adaptation emission of expanding among the good E-CCFI, also can be described as the self adaptation emission of accomplishing good CCFI and two kinds of structures of E-CCFI, make that system's forward and backward compatibility problem is solved.
Certainly, the present invention also can have other various embodiments, for example, does not comprise the control information that strengthens expansion in the indication of control channel form if system bandwidth, is then represented emission information less than preset value; If system bandwidth, is then represented emission information more than or equal to preset value and is comprised the control information that strengthens expansion in the indication of control channel form.Wherein, preset value is 40MHz.That is, whether implicitly represent whether launched the control information of expanding among the E-CCFI more than or equal to 40MHz according to system bandwidth.
Device embodiment
According to embodiments of the invention, provide a kind of device of control channel self adaptation emission.Fig. 5 is that as shown in Figure 5, this device comprises according to the block diagram of the device of the control channel self adaptation emission of the embodiment of the invention:
This embodiment is applied to transmitting terminal, and transmitting terminal adopts agreement implicit representation mode to handle emission information, has reached the self adaptation emission of good CCFI and two kinds of structures of E-CCFI.
Preferably, said apparatus also comprises: receiver module is used for receiving emission information; Determination module is used for determining according to the implicit representation mode whether emission information comprises the control information that strengthens control channel form indication expansion; Demodulation module is used for according to determining the emission of demodulation as a result information.The preferred embodiment is applied to receiving terminal, and receiving terminal adopts agreement implicit representation mode to handle emission information, has reached the self adaptation emission of good CCFI and two kinds of structures of E-CCFI.
Wherein, the implicit representation mode represented of representation module can comprise one of following mode:
(1) if, then representing emission information less than 3, control channel form indicated value do not comprise the control information that strengthens expansion in the indication of control channel form; If control channel form indicated value equals 3, represent that then emission information comprises the control information that strengthens expansion in the indication of control channel form.
(2) if, then representing emission information less than preset value, system bandwidth do not comprise the control information that strengthens expansion in the indication of control channel form; If system bandwidth, is then represented emission information more than or equal to preset value and is comprised the control information that strengthens expansion in the indication of control channel form.Preferably, preset value is 40MHz.
Above embodiment adopts agreement implicit representation mode to handle emission information, overcome prior art and do not considered the problem that effective control channel self adaptation is launched, and then reached 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.
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 elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried 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 doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a control channel self adaptation emission is characterized in that, comprising:
In the emission information that comprises control channel form indication information, arrange or do not arrange the control information that strengthens expansion in the indication of control channel form;
When the described emission information of emission, represent implicitly according to predetermined implicit representation mode whether described emission information arranges the control information of expansion in the described enhancing control channel form indication.
2. method according to claim 1 is characterized in that, also comprises:
Receive described emission information;
Determine according to described implicit representation mode whether described emission information comprises the control information of expansion in the described enhancing control channel form indication;
According to the described emission information of definite demodulation as a result.
3. method according to claim 1 and 2 is characterized in that, described implicit representation mode specifically comprises:
If control channel form indicated value, is then represented described emission information less than 3 and is not comprised the control information of expansion in the described enhancing control channel form indication;
If described control channel form indicated value equals 3, represent that then described emission information comprises the control information of expansion in the described enhancing control channel form indication.
4. method according to claim 1 and 2 is characterized in that, described implicit representation mode specifically comprises:
If system bandwidth, is then represented described emission information less than preset value and is not comprised the control information of expansion in the described enhancing control channel form indication;
If described system bandwidth, is then represented described emission information more than or equal to described preset value and is comprised the control information of expansion in the described enhancing control channel form indication.
5. method according to claim 4 is characterized in that, described preset value is 40MHz.
6. the device of a control channel self adaptation emission is characterized in that, comprising:
Module is set, is used for arranging or do not arrange the control information that strengthens expansion in the indication of control channel form in the emission information that comprises control channel form indication information;
Representation module is used for representing implicitly according to predetermined implicit representation mode whether described emission information arranges the control information of expansion in the described enhancing control channel form indication when the described emission information of emission.
7. device according to claim 6 is characterized in that, also comprises:
Receiver module is used for receiving described emission information;
Determination module is used for determining according to described implicit representation mode whether described emission information comprises the control information of described enhancing control channel form indication expansion;
Demodulation module is used for according to determining the described emission information of demodulation as a result.
8. according to claim 6 or 7 described devices, it is characterized in that the described implicit representation mode that described representation module is represented specifically comprises:
If control channel form indicated value, is then represented described emission information less than 3 and is not comprised the control information of expansion in the described enhancing control channel form indication;
If described control channel form indicated value equals 3, represent that then described emission information comprises the control information of expansion in the described enhancing control channel form indication.
9. according to claim 6 or 7 described devices, it is characterized in that the described implicit representation mode that described representation module is represented specifically comprises:
If system bandwidth, is then represented described emission information less than preset value and is not comprised the control information of expansion in the described enhancing control channel form indication;
If described system bandwidth, is then represented described emission information more than or equal to described preset value and is comprised the control information of expansion in the described enhancing control channel form indication.
10. device according to claim 9 is characterized in that, described preset value is 40MHz.
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| 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 |
| CN101742656B (en) * | 2008-11-04 | 2012-05-30 | 电信科学技术研究院 | Resource allocation method and resource using method, device and system |
| CN108847918B (en) | 2016-11-03 | 2019-07-12 | 华为技术有限公司 | Resource allocation method, base station and the terminal device of control channel |
| CN112867165A (en) * | 2017-07-06 | 2021-05-28 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for dynamic scheduling |
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| EP1646253A2 (en) * | 2005-11-02 | 2006-04-12 | Siemens Aktiengesellschaft | Method for the controlling of repeated SACCH operation |
| CN1964204A (en) * | 2006-11-15 | 2007-05-16 | 华为技术有限公司 | A decoding optimization method and device to intensify special physical control channel |
| CN101179836A (en) * | 2006-11-08 | 2008-05-14 | 中兴通讯股份有限公司 | Method of decoding reinforced uplink physical channel of time-division synchronous code division multiple access system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1646253A2 (en) * | 2005-11-02 | 2006-04-12 | Siemens Aktiengesellschaft | Method for the controlling of repeated SACCH operation |
| CN101179836A (en) * | 2006-11-08 | 2008-05-14 | 中兴通讯股份有限公司 | Method of decoding reinforced uplink physical channel of time-division synchronous code division multiple access system |
| CN1964204A (en) * | 2006-11-15 | 2007-05-16 | 华为技术有限公司 | A decoding optimization method and device to intensify special physical control channel |
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