CN101299626B - Method and device for controlling channel self-adaption emission - Google Patents
Method and device for controlling channel self-adaption emission Download PDFInfo
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- CN101299626B CN101299626B CN 200810131844 CN200810131844A CN101299626B CN 101299626 B CN101299626 B CN 101299626B CN 200810131844 CN200810131844 CN 200810131844 CN 200810131844 A CN200810131844 A CN 200810131844A CN 101299626 B CN101299626 B CN 101299626B
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Abstract
The present invention provides a control channel self-adapting transmitting method and device, wherein, the method includes: setting or not setting the control information reinforcing extension in the control channel format indication in the transmitting information that includes the control channel format indication; creating the indication information for indicating whether the control information reinforcing extension in the control channel format indication is set up in the transmitting information; transmitting the indication information and transmitting information. The present invention reaches the good self-adapting transmission of two CCFI and E-CCEI structures, thereby resolving the forward and backward direction compatible problem of the system.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of control channel self adaptation launching technique and device.
Background technology
LTE (Long-Term Evolution, Long Term Evolution)/LTE-Advanced system and IMT-Advanced (International Mobile Telecommunications, international mobile communication) system is all 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, namely, control channel and Traffic Channel are separated in time, for example, 14 OFDM symbols are arranged in a subframe, front 3 OFDM symbols are as control channel, rear 11 OFDM symbols are as Traffic Channel.
In existing system, often allow the user of access more, at first describe as an example of the control channel of present LTE system example.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, mixed automatic retransfer request indication);
Can find out, the design of control channel is to be made of different parts, and each part has its specific function.For convenience of description, the below's several terms of definition and agreement:
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 only has 1,2,4,8 CCE to combine as the candidate control channel;
9) 1,2,4, the 8 corresponding different coding speed of 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 signal is carried out respectively chnnel coding, then carry out the QPSK modulation, carry out CCE to RE (ResourseElement, subcarrier) form E-CCFI, then carry out the subcarrier mapping, space diversity, carry out IFFT (Inverse Fast Fourier Transform, inverse-Fourier transform) add 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 successfully, carry out blind Detecting (namely respectively to [CCE1 CCE2] from being combined as 2 CCE, [CCE3 CCE4], ..., [CCE15CCE16]), 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 signal to assign this moment, and 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 travel through all CCE combined situation, can find out for the blind Detecting number of times of some UE too much.
In LTE/LTE-Advanced and IMT-Advanced system, support QP SK, 16QAM, 64QAM modulation system, and be all much identical in the modulation system of a plurality of UE of synchronization, if launch this information in the control signal of each UE, so just increased the expense of control signal.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) inner, content in E-CCFI comprises the maximum sequence number of the CCE of business modulation system and correspondence, transmitting terminal only is mapped in the UE that each has the identical services modulation system in 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 so the blind Detecting time of most of UE.E-CCFI namely reduces the control signal expense, and can reduce to a certain extent number of times, reduction UE end handling process and the power loss of UE end blind Detecting.
Fig. 2 is that as shown in Figure 2, the control information form of expanding in E-CCFI is made of two parts according to the schematic diagram of the E-CCFI composition of correlation technique, and business adopts respectively the maximum sequence number of the CCE of different modulation systems and the indication of business modulation system, wherein,
CCFI: the number that is used to indicate the shared OFDM symbol of control channel;
N1: the maximum sequence number of CCE under lower/upper row M1 modulation system;
M1: lower/upper enforcement is with the modulation system of the highest Traffic Channel of frequency;
N2: the maximum sequence number of CCE under lower/upper row M2 modulation system;
M2: lower/upper enforcement is with the modulation system of time high Traffic Channel of frequency;
N3: the maximum sequence number of CCE under the 3rd kind of modulation system of lower/upper row;
N4: the maximum sequence number of CCE under up/down row m1 modulation system;
M1: up/down is exercised the modulation system with the highest Traffic Channel of frequency;
N5: the maximum sequence number of CCE under up/down row m2 modulation system;
M2: up/down is exercised the modulation system with time high Traffic Channel of frequency;
N6: the maximum sequence number of CCE under the 3rd kind of modulation system of up/down row.
In realizing process of the present invention, the inventor finds that in prior art, there are the following problems at least: at present, research for the content of control signal, the method for salary distribution, minimizing control signal expense is a focus, but, do not consider effective control channel self adaptation emission, for example, in original system, CCFI is all the time in emission, or in improved system, the E-CCFI control information is all the time in emission, but, launch the self adaptation emission of CCFI structure and E-CCFI structure in other words for the control information self adaptation of expanding in 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 present 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; Create indication information, be used to indicate whether be provided with the control information that strengthens expansion in the indication of control channel form in emission information; Emission indication information and emission information.
Preferably, said method also comprises: receive indication information and emission information; Determine according to indication information 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, launch indication information on broadcast channel.
Preferably, carry indication information or indication information is arranged in emission information with message independently.
Preferably, carry indication information in the corresponding message when random access.
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 present invention comprises: module is set, is used for arranging or do not arrange in the emission information that comprises control channel form indication information the control information of expanding in the indication of enhancing control channel form; Creation module is used for creating indication information, is used to indicate whether be provided with the control information that strengthens expansion in the indication of control channel form in emission information; Transmitter module is used for emission indication information and emission information.
Preferably, said apparatus also comprises: receiver module is used for receiving indication information and emission information; Determination module is used for determining according to explicit indication information 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, transmitter module is launched indication information on broadcast channel.
Preferably, carry indication information or indication information is arranged in emission information with message independently.
Preferably, carry indication information in the corresponding message when random access.
Above embodiment adopts in indication information explicitly indication emission information whether be provided with the method that strengthens the control information of expansion in the indication of control channel form, 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 system's forward and backward compatibility problem be solved.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of 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 present invention;
Fig. 4 is the flow chart of the transmitting-receiving two-end work of the control information self adaptation emission expanded in E-CCFI according to the embodiment of the present invention;
Fig. 5 is the block diagram according to the device of the control channel self adaptation emission of the embodiment of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Embodiment of the method
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, the method comprises according to the flow chart of the method for the control channel self adaptation emission of the embodiment of the present invention:
Step S302, arrange in the emission information that comprises control channel form indication information or E-CCFI is not set in the control information expanded;
Step S304 creates indication information, is used to indicate whether be provided with the control information of expanding in E-CCFI in emission information;
Step S306, emission indication information and emission information.
This embodiment is applied to transmitting terminal, adopt the method that whether is provided with the control information of expanding in E-CCFI in indication information explicitly indication 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 system's forward and backward compatibility problem be solved.
Preferably, said method also comprises: receive indication information and emission information; Determine according to indication information whether emission information comprises the control information of expanding in E-CCFI; According to the definite emission of demodulation as a result information.The preferred embodiment is applied to receiving terminal, determines emission information according to indication information.
Preferably, launch indication information on broadcast channel.
Preferably, carry indication information or indication information is arranged in emission information with message independently.For example: carry indication information in the corresponding message when random access.
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 in E-CCFI of the present invention is as follows:
Transmitting terminal (Node-B) is launched CCFI information always, and whether transmitting terminal explicitly notice receiving terminal has launched the control information of expanding in E-CCFI, for example, send the 1bit indication information on BCH (Broadcast Channel) broadcast channel, the control information of expanding in E-CCFI has not been launched in 0 representative, and corresponding sub-carrier positions is used for emission CCE information; The control information of expanding in E-CCFI has been launched in 1 representative, 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 in E-CCFI according to the embodiment of the present invention; As shown in Figure 4, the method comprises the steps:
Step S402, in judgement BCH, indication information is 0 or 1; In the situation that judgment result is that 1, proceed to step S404, in the situation that judgment result is that 0, proceed to step S406;
Step S404, this moment, indication information was 1, and the control information of expanding in E-CCFI has been launched in expression, and other sub-carrier positions are used for emission CCE information, emission after the control information of namely expanding in E-CCFI mapping;
Step S406, this moment, indication information was 0, and the control information of expanding in E-CCFI has not been launched in expression, and corresponding sub-carrier positions is used for emission CCE information; That is, emission after the mapping of CCFI information;
Step S408, receiving terminal (UE) is at first wanted the demodulation indication information;
Step S410 is 0 or 1 according to indication information in the result judgement BCH of demodulation, in the situation that judgment result is that 1, proceeds to step S412, in the situation that judgment result is that 0, proceeds to step S414;
Step S412, this moment, indication information was 1, except the subcarrier that extracts the CCFI relevant position carries out demodulation, the subcarrier that also will extract the control information relevant position of expanding in E-CCFI carries out demodulation;
Step S414, this moment, indication information was 0, the subcarrier that only extracts the CCFI relevant position carries out demodulation.
To sum up, adopt the method for the invention, compared with prior art, can accomplish the control information self adaptation emission of expanding in 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 system's forward and backward compatibility problem be solved.
Certainly, the present invention also can have other various embodiments, for example, represents whether launched the control information of expanding in E-CCFI by carrying this information of explicit emission in the corresponding message when accessing at random.
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 present invention:
This embodiment is applied to transmitting terminal, and transmitting terminal adopts the method that whether is provided with the control information of expanding in E-CCFI in indication information explicitly indication 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 indication information and emission information; Determination module is used for determining according to explicit indication information 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, determines emission information according to indication information.
Preferably, transmitter module is launched indication information on broadcast channel.
Preferably, carry indication information or indication information is arranged in emission information with message independently.For example, carry indication information in the corresponding message when random access.
Above embodiment adopts in indication information explicitly indication emission information whether be provided with the method that strengthens the control information of expansion in the indication of control channel form, 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 system's forward and backward compatibility problem be 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 general calculation element, they can concentrate on 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 storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the method for a control channel self adaptation emission, is characterized in that, comprising:
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;
Create indication information, be used to indicate the control information that whether is provided with expansion in described enhancing control channel form indication in described emission information;
Launch described indication information and described emission information.
2. method according to claim 1, is characterized in that, also comprises:
Receive described indication information and described emission information;
Determine according to described indication information whether described emission information comprises the control information of expansion in described enhancing control channel form indication;
According to the described emission information of definite demodulation as a result.
3. method according to claim 1, is characterized in that, the described indication information of emission on broadcast channel.
4. method according to claim 1, is characterized in that, carries described indication information or described indication information is arranged in described emission information with message independently.
5. method according to claim 4, is characterized in that, carries described indication information in the corresponding message when random access.
6. the device of a control channel self adaptation emission, is characterized in that, comprising:
Module is set, is used for arranging or not arranging in the emission information that comprises control channel form indication information the control information of expansion in the indication of enhancing control channel form;
Creation module is used for creating indication information, is used to indicate the control information that whether is provided with expansion in described enhancing control channel form indication in described emission information;
Transmitter module is used for launching described indication information and described emission information.
7. device according to claim 6, is characterized in that, also comprises:
Receiver module is used for receiving described indication information and described emission information;
Determination module is used for determining according to described indication information 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. device according to claim 6, is characterized in that, described transmitter module is launched described indication information on broadcast channel.
9. device according to claim 6, is characterized in that, carries described indication information or described indication information is arranged in described emission information with message independently.
10. device according to claim 9, is characterized in that, carries described indication information in the corresponding message when random access.
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| CN102196568B (en) * | 2010-03-02 | 2014-03-12 | 中兴通讯股份有限公司 | Method, device and system for processing multi-carrier resource |
| CN102752803A (en) * | 2011-04-19 | 2012-10-24 | 普天信息技术研究院有限公司 | Control information and service information transmission method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1646253A3 (en) * | 2005-11-02 | 2006-05-31 | 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 |
| CN101150358A (en) * | 2006-09-21 | 2008-03-26 | 大唐移动通信设备有限公司 | Method for processing and multiplexing uplink control channel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1646253A3 (en) * | 2005-11-02 | 2006-05-31 | Siemens Aktiengesellschaft | Method for the controlling of repeated SACCH operation |
| CN101150358A (en) * | 2006-09-21 | 2008-03-26 | 大唐移动通信设备有限公司 | Method for processing and multiplexing uplink control channel |
| 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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