CN101917380A - Method and device for sending downlink control signaling and uplink control signaling for multi-antenna system - Google Patents
Method and device for sending downlink control signaling and uplink control signaling for multi-antenna system Download PDFInfo
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- CN101917380A CN101917380A CN201010258985XA CN201010258985A CN101917380A CN 101917380 A CN101917380 A CN 101917380A CN 201010258985X A CN201010258985X A CN 201010258985XA CN 201010258985 A CN201010258985 A CN 201010258985A CN 101917380 A CN101917380 A CN 101917380A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Abstract
The invention discloses a method and a device for sending a downlink control signaling and an uplink control signaling for a multi-antenna system, wherein the method comprises the following steps of: acquiring time domain orthogonal resources indicated by an index by a terminal; and sending the uplink control signaling by the terminal by using the time domain orthogonal resources on different antennas. The invention solves the problem that the uplink control signaling in physical uplink control channel format 3 can not be sent in the multi-antenna system in the prior art, so that the technical effect of accurately reporting the uplink control signaling in physical uplink control channel format 3 is achieved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of sending method and device of downlink and uplink control signals through multi-antenna system.
Background technology
LTE (Long Term Evolution, Long Term Evolution) system is the essential planning of third generation partnership, Fig. 1 shows the structural representation of basic frame structure in the LTE system, as shown in Figure 1, frame structure is divided into radio frames, field, subframe, time slot and four grades of symbol, wherein, the length of a radio frames is 10ms, a radio frames is made up of two fields, the length of each field is 5ms, and a field is made up of 5 subframes, and the length of each subframe is 1ms, a subframe is made of two time slots, and the length of each time slot is 0.5ms.
When the LTE system adopts the regular circulation prefix, time slot comprise 7 length be 66.7us on/descending symbol, wherein, the circulating prefix-length of first symbol is 5.21us, the circulating prefix-length of other 6 symbols is 4.69us.
When the LTE system adopts extended cyclic prefix, time slot comprise 6 length be 66.7us on/descending symbol, wherein, the circulating prefix-length of each symbol is 16.67us.
In the descending HARQ of LTE, PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) ACK/NACK (Acknowledgement/Negative Acknowledgement, correct/error response message) response message, as UE (User Equipment, terminal) there is not PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) time, be to go up at PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) to send.LTE has defined multiple PUCCH format (format, form), comprise PUCCH format1/1a/1b and format 2/2a/2b, wherein format 1 is used for sending SR (the Scheduling Request of UE, dispatch request) signal, format 1a and 1b are used for feeding back the ACK/NACK response message of 1 bit and the ACK/NACK response message of 2 bits respectively, and format 2 is used for sending CSI (Channel States Information, channel condition information; Comprise CQI (Channel Quality Information, channel quality information), PMI (Precoding Matrix Indicator, precoding information) and RI (Rank Indication, rank indication information), format 2a is used for sending the ACK/NACK response message of CSI and 1 bit, format2b is used for sending the ACK/NACK response message of CSI information and 2 bits, and format 2a/2b only is used for the scene that Cyclic Prefix is the regular circulation prefix.
In the LTE system, at FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) in the system, because ascending-descending subframes is one to one, so when PDSCH only comprises a transmission block, UE will feed back the ACK/NACK response message of 1 bit, when PDSCH comprises two transmission blocks, UE will feed back the ACK/NACK response message of 2 bits, at TDD (Time Division Duplex, time division duplex) in the system, because ascending-descending subframes is not one to one, the ACK/NACK response message that is to say a plurality of descending sub frame correspondences need send on the PUCCH of sub-frame of uplink channel, and wherein " bundling window " formed in the set of the descending sub frame of sub-frame of uplink correspondence.The sending method of ACK/NACK response message has two kinds: a kind of bundling of being (binding method), the core concept of this method is carrying out logic and operation in the ACK/NACK response message of the transmission block of each descending sub frame correspondence of this sub-frame of uplink feedback, if a descending sub frame has 2 transmission blocks, UE will feed back the ACK/NACK response message of 2 bits, if each subframe has only a transmission block, UE will feed back the ACK/NACK response message of 1 bit; Another kind is multiplexing (multiplexing with channel selection, channel is selected) method, the core concept of this method be utilize different modulation symbol on different PUCCH channels and this channel to represent need be at the different feedback states of the descending sub frame of this sub-frame of uplink feedback, if a plurality of transmission blocks are arranged on the descending sub frame, elder generation carries out the ACK/NACK of a plurality of transmission blocks feedbacks of descending sub frame to carry out the channel selection again behind the logical AND (Spatial Bundling) so, uses PUCCH format1b to send then.
In order to satisfy (the International Telecommunication Union-Advanced of senior International Telecommunications Union, abbreviate ITU-Advanced as) requirement, senior Long Term Evolution (Long Term Evolution Advanced as the evolution standard of LTE, abbreviating LTE-A as) system need support bigger system bandwidth (reaching as high as 100MHz), and need the existing standard of backward compatibility LTE.On the basis of prior LTE system, the bandwidth of LTE system can be merged and obtain bigger bandwidth, this technology is called carrier aggregation (Carrier Aggregation, abbreviate CA as) technology, the availability of frequency spectrum, alleviation frequency spectrum resource that this technology can improve the IMT-Advance system are in short supply, and then optimize the utilization of frequency spectrum resource.In order to obtain higher peaks spectrum efficient, in the LTE-A system, many transmit antennas of up support, consider that the transmission diversity mode can improve the reliability of Channel Transmission, improve the signal to noise ratio of received signal, so all be based on the transmission diversity mode at the discussion of the defeated pattern of PUCCH channel multi-antenna transmitting.
When LTE-A had adopted carrier aggregation technology, when UE had disposed 4 downlink component carriers, UE need feed back the ACK/NACK of these 4 downlink component carriers.If under the MIMO situation, UE need feed back the ACK/NACK of each code word, and then when UE had disposed 4 downlink component carriers, UE need feed back 8 ACK/NACK.At present the conclusion about ACK/NACK response message feedback is: for the terminal of LTE-A: if support 4 bit ACK/NACK response message at most, use channel selecting method; If support feedback, use the method for DFT-s-OFDM structure greater than 4 bit ACK/NACK response message.For the ease of describing the back, be called Physical Uplink Control Channel form 3 with this based on the DFT-s-OFDM structure at this.
The inventor finds: in present LTE-A system, be not given in and send the uplink control signaling method that has adopted Physical Uplink Control Channel form 3 under the multiaerial system.
Summary of the invention
Main purpose of the present invention is to provide a kind of sending method and device of downlink and uplink control signals through multi-antenna system, with the uplink control signaling problem of Physical Uplink Control Channel form 3 that solved the employing that can't send in the prior art at least under multiaerial system.
According to an aspect of the present invention, provide a kind of sending method of downlink and uplink control signals through multi-antenna system, it comprises: terminal is obtained the time domain orthogonal resource by the index indication; Above-mentioned terminal uses different above-mentioned time domain orthogonal resources to send upstream control signaling on different antennas.
Further, above-mentioned upstream control signaling comprises: affirmation/negative ACK/NACK response message and/or the channel condition information that adopts the DFT-s-OFDM structure to send.
Further, above-mentioned terminal is used different above-mentioned time domain orthogonal resources to send above-mentioned upstream control signaling on different antennas to comprise: above-mentioned terminal is used the time domain orthogonal resource of first index indication that above-mentioned upstream control signaling is expanded to current time slots to be used to transmit above-mentioned uplink control signaling orthogonal frequency division multiplex OFDM symbol, and uses first antenna transmission; The time domain orthogonal resource that above-mentioned terminal is used second index indication expands to being used in the above-mentioned current time slots with above-mentioned upstream control signaling and transmits above-mentioned uplink control signaling OFDM symbol, and uses second antenna transmission.
Further, above-mentioned terminal also comprises using different above-mentioned time domain orthogonal resources to send above-mentioned upstream control signaling on the different antennas: above-mentioned terminal uses different time domain orthogonal resources or different frequency domain orthogonal resources to obtain uplink demodulation reference signal on above-mentioned first antenna and second antenna; Above-mentioned terminal is mapped to above-mentioned uplink demodulation reference signal to transmit on the OFDM symbol of demodulated reference signal with above-mentioned first antenna and corresponding being used to of second antenna and sends.
Further, above-mentioned terminal is used different above-mentioned time domain orthogonal resources to send above-mentioned upstream control signaling on different antennas also to comprise: send the out-hole run reference signal if desired simultaneously, then above-mentioned terminal is mapped to above-mentioned out-hole run reference signal on the OFDM symbol that is used for the transmission measurement reference signal corresponding with above-mentioned first antenna and second antenna and sends.
Further, the time domain orthogonal resource obtained by index indication of above-mentioned terminal comprises: above-mentioned terminal is obtained above-mentioned index from received signaling; Above-mentioned terminal is searched the above-mentioned time domain orthogonal resource corresponding with above-mentioned index in this locality.
Further, above-mentioned terminal is obtained above-mentioned index and comprised from received signaling: above-mentioned terminal is obtained all required index by signaling; Perhaps above-mentioned terminal is obtained a index in above-mentioned all required index by above-mentioned signaling, and obtains other index in above-mentioned all required index by this index and predetermined deviant; Wherein, above-mentioned signaling is one of following: signaling, implicit signaling, the perhaps signaling of Xian Shiing of high-rise configuration.
Further, above-mentioned time domain orthogonal resource comprises one of following: DFT sequence, Walsh sequence or CAZAC sequence.
Further, above-mentioned terminal is used different above-mentioned time domain orthogonal resources to send above-mentioned upstream control signaling on different antennas to comprise: if above-mentioned terminal uses 4 antennas to send above-mentioned upstream control signaling, and the then transmission by above-mentioned 4 antennas of the virtual realization of 2 antennas.
According to a further aspect in the invention, provide a kind of terminal that adopts multiaerial system, it comprises: acquiring unit is used to obtain the time domain orthogonal resource by the index indication; Transmitting element is used for using on different antennas different above-mentioned time domain orthogonal resources to send upstream control signaling.
Further, above-mentioned transmitting element comprises: first sending module, be used to use the time domain orthogonal resource of first index indication that above-mentioned upstream control signaling is expanded to current time slots and be used to transmit above-mentioned uplink control signaling OFDM symbol, and use first antenna transmission; Second sending module, the time domain orthogonal resource that is used for using the indication of second index with above-mentioned upstream control signaling expand to above-mentioned current time slots be used to transmit above-mentioned uplink control signaling OFDM symbol, and use second antenna transmission.
Further, above-mentioned transmitting element also comprises: the 3rd sending module, be used to use different time domain orthogonal resources or different frequency domain orthogonal resources to obtain uplink demodulation reference signal on above-mentioned first antenna and second antenna, and above-mentioned uplink demodulation reference signal is mapped to transmit on the OFDM symbol of demodulated reference signal with above-mentioned first antenna and corresponding being used to of second antenna sends; Send the out-hole run reference signal if desired simultaneously, then above-mentioned out-hole run reference signal is mapped on the OFDM symbol that is used for the transmission measurement reference signal corresponding and sends with above-mentioned first antenna and second antenna.
Further, above-mentioned acquiring unit comprises: acquisition module is used for obtaining above-mentioned index from received signaling; Search module, be used for searching the above-mentioned time domain orthogonal resource corresponding with above-mentioned index in this locality.
By the present invention, on different antennas, use different time domain orthogonal resources to send the upstream control signaling that adopts Physical Uplink Control Channel form 3, the uplink control signaling problem of Physical Uplink Control Channel form 3 that solved the employing that under multiaerial system, can't send, and then reached and can accurately report the uplink control signaling technique effect that adopts Physical Uplink Control Channel form 3.
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 basic frame structure in the LTE system of correlation technique;
Fig. 2 is a kind of preferred flow chart according to the sending method of the downlink and uplink control signals through multi-antenna system of the embodiment of the invention;
Fig. 3 is the another kind of preferred flow chart according to the sending method of the downlink and uplink control signals through multi-antenna system of the embodiment of the invention;
Fig. 4 is another the preferred flow chart according to the sending method of the downlink and uplink control signals through multi-antenna system of the embodiment of the invention;
Fig. 5 is another the preferred flow chart according to the sending method of the downlink and uplink control signals through multi-antenna system of the embodiment of the invention;
Fig. 6 is a kind of preferred schematic diagram of the symbol in the DFT-s-OFDM structure (Physical Uplink Control Channel form 3) according to the embodiment of the invention;
Fig. 7 is the another kind of preferred schematic diagram of the symbol in the DFT-s-OFDM structure (Physical Uplink Control Channel form 3) according to the embodiment of the invention;
Fig. 8 is another preferred schematic diagram of the symbol in the DFT-s-OFDM structure (Physical Uplink Control Channel form 3) according to the embodiment of the invention;
Fig. 9 is another preferred schematic diagram of the symbol in the DFT-s-OFDM structure (Physical Uplink Control Channel form 3) according to the embodiment of the invention;
Figure 10 is another preferred schematic diagram of the symbol in the DFT-s-OFDM structure (Physical Uplink Control Channel form 3) according to the embodiment of the invention;
Figure 11 is the structural representation according to the terminal of the employing multiaerial system of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 2 is a kind of preferred flow chart according to the sending method of the downlink and uplink control signals through multi-antenna system of the embodiment of the invention, and it comprises:
Step S202, terminal is obtained the time domain orthogonal resource by the index indication;
Step S204, above-mentioned terminal uses different above-mentioned time domain orthogonal resources to send upstream control signaling on different antennas.
Preferably, described upstream control signaling comprises: ACK (Acknowledgement confirms)/NACK (Negative Acknowledgement negates) response message and/or the channel condition information that adopts the DFT-s-OFDM structure to send.
Owing on different antennas, use different time domain orthogonal resources to send the upstream control signaling that adopts Physical Uplink Control Channel form 3, the uplink control signaling problem of Physical Uplink Control Channel form 3 that solved the employing that under multiaerial system, can't send, and then reached and can accurately report the uplink control signaling technique effect that adopts Physical Uplink Control Channel form 3.
Preferably, Physical Uplink Control Channel form 3 can be the ascending control channel form of agreement defined.
Preferably, described terminal is used different described time domain orthogonal resources to send described upstream control signaling on different antennas to comprise: described terminal is used the time domain orthogonal resource of first index indication that described upstream control signaling is expanded to current time slots to be used to transmit described uplink control signaling OFDM (Orthogonal Frequency Division Multiplexing, OFDM) on the symbol, and uses first antenna transmission; The time domain orthogonal resource that described terminal is used second index indication expands to being used in the described current time slots with described upstream control signaling and transmits described uplink control signaling OFDM symbol, and uses second antenna transmission.
Preferably, described terminal also comprises using different described time domain orthogonal resources to send on the different antennas to adopt upstream control signaling: described terminal uses different time domain orthogonal resources or different frequency domain orthogonal resources to obtain uplink demodulation reference signal on described first antenna and second antenna; Described terminal is mapped to described uplink demodulation reference signal to transmit on the OFDM symbol of demodulated reference signal with described first antenna and corresponding being used to of second antenna and sends.Certainly, here, first antenna and second antenna are an example, and above-mentioned steps goes for a plurality of antennas, for example, and 4 antennas.
Preferably, described terminal uses different described time domain orthogonal resource transmission upstream control signalings also to comprise on different antennas: send the out-hole run reference signal if desired simultaneously, described terminal is mapped to described out-hole run reference signal on the OFDM symbol that is used for the transmission measurement reference signal corresponding with described first antenna and second antenna and sends.
Preferably, the time domain orthogonal resource obtained by index indication of described terminal comprises: described terminal is obtained described index from received signaling; Described terminal is searched the described time domain orthogonal resource corresponding with described index in this locality.Mode by this signaling configuration, terminal can be obtained the time domain orthogonal resource comparatively easily, and, can not need to transmit concrete time domain orthogonal resource by signaling, and just transmitted the index corresponding with the time domain orthogonal resource by signaling, thereby further effectively utilized Radio Resource, guaranteed the correctness of employed time domain orthogonal resource.
Preferably, the base station can dispose identical mapping table by mutual in this locality separately in advance with terminal, and wherein, in this mapping table, index and time domain orthogonal resource all have one-to-one relationship.In this way, when mutual, the base station only need issue the signaling of carrying index and not need to transmit concrete time domain orthogonal resource, thereby has saved transfer resource, has improved efficiency of transmission.
Preferably, described terminal is obtained described index and comprised from received signaling: described terminal is obtained all required index by signaling; Perhaps described terminal is obtained a index in described all required index by described signaling, and obtains other index in described all required index by this index and predetermined deviant; Wherein, described signaling is one of following: signaling, implicit signaling, the perhaps signaling of Xian Shiing of high-rise configuration.
Preferably, obtain before the time domain orthogonal resource of being indicated by index in described terminal, described upstream control signaling is carried out preliminary treatment obtain the upstream control signaling sequence, wherein, described preliminary treatment comprises: chnnel coding, scrambling, modulation and precoding.By the pre-treatment step in the present embodiment, improved the uplink control signaling transmission correctness.
Preferably, described time domain orthogonal resource comprises one of following: DFT sequence, Walsh sequence or CAZAC sequence.By different time domain orthogonal resources, make the present invention go for different scenes.
Preferably, described terminal uses different described time domain orthogonal resource transmission upstream control signalings to comprise on different antennas: if described terminal uses 4 antennas to send described upstream control signaling, then pass through the transmission of described 4 antennas of the virtual realization of 2 antennas.
Below be example with terminal 2 antennas, specifically describe the uplink control signaling sending method, as shown in Figure 3, it comprises:
Step S302: the upstream control signaling to the needs transmission carries out preliminary treatment;
Step S304: described terminal makes index of reference
The orthogonal resource [w (0) w (1) ... w (n-1)] of indication is used to transmit uplink control signaling n OFDM symbol with the upstream control signaling sequence extension to current time slots, utilizes antenna 1 to send; Described terminal makes index of reference
The orthogonal resource [w (0) w (1) ... w (n-1)] of indication is used to transmit uplink control signaling n OFDM symbol with the upstream control signaling sequence extension to current time slots, utilizes antenna 2 to send;
Step S306: also need to send uplink demodulation reference signal on described antenna 1 and the antenna 2, described terminal is by the uplink demodulation reference signal on different time domain orthogonal resources or the frequency domain orthogonal resource acquisition different antennae, then, described terminal is mapped to uplink demodulation reference signal respectively to transmit on the OFDM symbol of demodulated reference signal with described antenna 1 and antenna 2 corresponding being used to and sends;
Step S308: when sending the out-hole run reference signal simultaneously if desired, described terminal is mapped to the out-hole run reference signal on the OFDM symbol that is used for the transmission measurement reference signal corresponding with described antenna 1 and antenna 2 and sends.If do not need to send simultaneously the out-hole run reference signal, then ignore this step.
Owing on 2 antennas, use different time domain orthogonal resources to send upstream control signaling, solved and under multiaerial system, can't adopt Physical Uplink Control Channel form 3 to send the uplink control signaling problem.
Preferably, step S302 is meant that the upstream control signaling to the needs transmission carries out chnnel coding, scrambling, and modulation obtains the upstream control signaling sequence after the precoding conversion;
Preferably, the index among the step S304
Be to obtain by the signaling that high level disposes; Described orthogonal resource [w (0) w (1) ... w (n-1)] is meant DFT sequence or Walsh sequence or CAZAC sequence or obtains by above-mentioned sequence extension;
Below be 6 scene based on the symbolic number in terminal 2 antennas, each time slot, specifically describe the uplink control signaling sending method.
Under the scene of present embodiment, suppose to adopt extended cyclic prefix, as shown in Figure 6, each slot (time slot) internal symbol number is 6; Need to send SRS; The shared symbol numbers of DM RS is 2, and continuous distribution (perhaps be distributed on the 0th of each time slot and the 5th symbol, as shown in Figure 7), the upstream control signaling that needs to send is o on the 2nd of each time slot and the 3rd symbol
0, o
1... o
M-1, wherein, 2 antenna transmission are adopted in m 〉=4; Orthogonal resource is the Walsh sequence shown in the employing table 1, and the sequence of DM RS is
Table 1
| Sequence index | Sequence |
| 0 | [1?1?1?1] |
| 1 | [1?-1?1?-1] |
| 2 | [1?-1?-1?1] |
| 3 | [1?1?-1?-1] |
As shown in Figure 4, the uplink control signaling sending method according to present embodiment comprises the steps:
Step S402: described terminal is to the upstream control signaling o of needs transmission
0, o
1... o
M-1Carry out preliminary treatment and obtain the upstream control signaling sequence;
Step S404: described terminal makes index of reference
The orthogonal resource [1 11 1] of indication is used to transmit 4 OFDM symbols of uplink control signaling with the upstream control signaling sequence extension to this time slot, sends with antenna 1; Described terminal makes index of reference
The orthogonal resource [1-1 1-1] of indication is used to transmit 4 OFDM symbols of uplink control signaling with the upstream control signaling sequence extension to this time slot, sends with antenna 2.
Step S406: described terminal adopts the uplink demodulation reference signal on one of following several modes generation different antennae;
What send on the DM RS symbol on the described antenna 1 is respectively
What send on the antenna 2 is
N=0 wherein, 1 ..., 11;
What send on the DM RS symbol on the described antenna 1 is respectively
What send on the antenna 2 is
N=0 wherein, 1 ..., 11.
That is to say that described terminal is mapped to the uplink demodulation reference signal on each antenna be used to corresponding with each antenna respectively and transmits on the OFDM symbol of DM RS and send.
Step S408: described terminal is mapped to SRS on the OFDM symbol that is used for transmitting SRS of described antenna 1 and antenna 2 correspondences and sends.
Embodiment 4
Below be 7 scene based on the symbolic number in terminal 2 antennas, each time slot, specifically describe the uplink control signaling sending method.
Under the scene of present embodiment, to suppose to adopt the regular circulation prefix, each slot internal symbol number is 7; Do not need to send SRS; The shared symbol numbers of DM RS is 2, and continuous distribution is on the 2nd of each time slot and the 3rd symbol, (perhaps is distributed on the 1st of each time slot and the 5th symbol, as shown in Figure 9 as shown in Figure 8; Perhaps respectively on the 0th of each time slot and the 6th symbol, as shown in figure 10), the upstream control signaling that needs to send is o
0, o
1... o
M-1, wherein, 2 antenna transmission are adopted in m 〉=4; Orthogonal resource is the DFT sequence shown in the employing table 2, and the sequence of DM RS is
Table 2
| Sequence index | Sequence |
| 0 | [1?1?1?1?1] |
| 1 | [1e j8π/5e j6π/5e j4π/5e j2π/5] |
| 2 | [1e j6π/5e j2π/5e j8π/5e j4π/5] |
| 3 | [1e j4π/5e j8π/5e j2π/5e j6π/5] |
| 4 | [1e j2π/5e j4π/5e j6π/5e j8π/5] |
As shown in Figure 5, the uplink control signaling sending method according to present embodiment comprises the steps:
Step S502: described terminal is to the upstream control signaling o of needs transmission
0, o
1... o
M-1Carry out preliminary treatment and obtain the upstream control signaling sequence;
Step S504: described terminal makes index of reference
The orthogonal resource [1 111 1] of indication is used to transmit 5 OFDM symbols of uplink control signaling with the upstream control signaling sequence extension to this time slot, utilizes antenna 1 to send; Described terminal makes index of reference
Orthogonal resource [the 1e of indication
J8 π/5e
J6 π/5e
J4 π/5e
J2 π/5] the upstream control signaling sequence extension is used to transmit 5 OFDM symbols of uplink control signaling to this time slot, utilize antenna 2 to send.
Step S506: described terminal adopts the uplink demodulation reference signal on one of following several modes generation different antennae;
What send on the DM RS symbol on the described antenna 1 is respectively
What send on the antenna 2 is
N=0 wherein, 1 ..., 11;
What send on the DM RS symbol on the described antenna 1 is respectively
What send on the antenna 2 is
N=0 wherein, 1 ..., 11;
That is to say that described terminal is mapped to the uplink demodulation reference signal on each antenna be used to corresponding with each antenna respectively and transmits on the OFDM symbol of DM RS and send.
Embodiment 5
The present invention also provides a kind of terminal that adopts multiaerial system, and it can use the sending method among the foregoing description 1-4 to send upstream control signaling.
Figure 11 is that it comprises according to the structural representation of the terminal of the employing multiaerial system of the embodiment of the invention: acquiring unit 1102 is used to obtain the time domain orthogonal resource by the index indication; Transmitting element 1104 links to each other with acquiring unit 1102, is used for using on different antennas different described time domain orthogonal resources to send upstream control signaling.
Preferably, described upstream control signaling comprises: the ACK/NACK response message and/or the channel condition information that adopt the DFT-s-OFDM structure to send.
Owing on different antennas, use different time domain orthogonal resources to send the upstream control signaling that adopts Physical Uplink Control Channel form 3, the uplink control signaling problem of Physical Uplink Control Channel form 3 that solved the employing that under multiaerial system, can't send, and then reached and can accurately report the uplink control signaling technique effect that adopts Physical Uplink Control Channel form 3.
Preferably, transmitting element 1104 comprises: first sending module 11041, be used to use the time domain orthogonal resource of first index indication that described upstream control signaling is expanded to current time slots and be used to transmit described uplink control signaling OFDM symbol, and the OFDM symbol that uses first antenna transmission to expand; Second sending module 11042, the time domain orthogonal resource that is used for using the indication of second index with described upstream control signaling expand to described current time slots be used to transmit described uplink control signaling OFDM symbol, and the OFDM symbol that uses second antenna transmission to expand.
Preferably, transmitting element 1104 also comprises: the 3rd sending module 11043, be used for using different time domain orthogonal resources or different frequency domain orthogonal resources to obtain uplink demodulation reference signal on described first antenna and second antenna, and described uplink demodulation reference signal is mapped to transmit on the OFDM symbol of demodulated reference signal with described first antenna and corresponding being used to of second antenna sends; Send the out-hole run reference signal if desired simultaneously, then described out-hole run reference signal is mapped on the OFDM symbol that is used for the transmission measurement reference signal corresponding and sends with described first antenna and second antenna.By using different time domain orthogonal resources, terminal is the reporting uplink demodulated reference signal more effectively.
Preferably, acquiring unit 1102 comprises: acquisition module 11021 is used for obtaining described index from received high-level signaling; Search module 11022, link to each other, be used for searching the described time domain orthogonal resource corresponding with described index in this locality with acquisition module 11021.Mode by this signaling configuration, terminal can be obtained the time domain orthogonal resource comparatively easily, and, can not need to transmit concrete time domain orthogonal resource by signaling, and just transmitted the index corresponding with the time domain orthogonal resource by signaling, thereby further effectively utilized Radio Resource, guaranteed the correctness of employed time domain orthogonal resource.
Further, the base station can dispose identical mapping table by mutual in this locality separately in advance with terminal, and wherein, in this mapping table, index and time domain orthogonal resource all have one-to-one relationship.In this way, when mutual, the base station only need issue the signaling of carrying index and not need to transmit concrete time domain orthogonal resource, thereby has saved transfer resource, has improved efficiency of transmission.
Preferably, obtain before the time domain orthogonal resource of being indicated by index in described terminal, described upstream control signaling is carried out preliminary treatment obtain the upstream control signaling sequence, wherein, described preliminary treatment comprises: chnnel coding, scrambling, modulation and precoding.
Preferably, described time domain orthogonal resource comprises one of following: DFT sequence, Walsh sequence or CAZAC sequence.
Preferably, described terminal is being used the upstream control signaling that sends employing Physical Uplink Control Channel form 3 on the capable physically control channel of different described time domain orthogonal resources on the different antennas.
Further, transmitting element 1104 in the above-mentioned terminal uses different above-mentioned time domain orthogonal resources to send above-mentioned upstream control signaling on different antennas to comprise: if above-mentioned terminal uses 4 antennas to send above-mentioned upstream control signaling, and the then transmission by above-mentioned 4 antennas of the virtual realization of 2 antennas.
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, and in some cases, can carry out step shown or that describe with the order that is different from herein, 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 (13)
1. the sending method of a downlink and uplink control signals through multi-antenna system is characterized in that, comprising:
Terminal is obtained the time domain orthogonal resource by the index indication;
Described terminal uses different described time domain orthogonal resources to send upstream control signaling on different antennas.
2. method according to claim 1 is characterized in that, described upstream control signaling comprises: affirmation/negative ACK/NACK response message and/or the channel condition information that adopts the DFT-s-OFDM structure to send.
3. method according to claim 1 is characterized in that, described terminal is used different described time domain orthogonal resources to send described upstream control signaling on different antennas to comprise:
The time domain orthogonal resource that described terminal uses first index to indicate expands to current time slots with described upstream control signaling and is used to transmit described uplink control signaling orthogonal frequency division multiplex OFDM symbol, and uses first antenna transmission;
The time domain orthogonal resource that described terminal is used second index indication expands to being used in the described current time slots with described upstream control signaling and transmits described uplink control signaling OFDM symbol, and uses second antenna transmission.
4. method according to claim 3 is characterized in that, described terminal is used different described time domain orthogonal resources to send described upstream control signaling on different antennas also to comprise:
Time domain orthogonal resource that described terminal use is different or different frequency domain orthogonal resources obtain the uplink demodulation reference signal on described first antenna and second antenna;
Described terminal is mapped to described uplink demodulation reference signal to transmit on the OFDM symbol of demodulated reference signal with described first antenna and corresponding being used to of second antenna and sends.
5. method according to claim 3 is characterized in that, described terminal is used different described time domain orthogonal resources to send described upstream control signaling on different antennas also to comprise:
Send the out-hole run reference signal if desired simultaneously, then described terminal is mapped to described out-hole run reference signal on the OFDM symbol that is used for the transmission measurement reference signal corresponding with described first antenna and second antenna and sends.
6. method according to claim 1 is characterized in that, the time domain orthogonal resource that described terminal is obtained by the index indication comprises:
Described terminal is obtained described index from received signaling;
Described terminal is searched the described time domain orthogonal resource corresponding with described index in this locality.
7. method according to claim 6 is characterized in that, described terminal is obtained described index and comprised from received signaling:
Described terminal is obtained all required index by signaling; Perhaps
Described terminal is obtained a index in described all required index by described signaling, and obtains other index in described all required index by this index and predetermined deviant;
Wherein, described signaling is one of following: signaling, implicit signaling, the perhaps signaling of Xian Shiing of high-rise configuration.
8. according to each described method in the claim 1 to 7, it is characterized in that it is one of following that described time domain orthogonal resource comprises: DFT sequence, Walsh sequence or CAZAC sequence.
9. according to each described method in the claim 1 to 7, it is characterized in that described terminal is used different described time domain orthogonal resources to send described upstream control signaling to comprise on different antennas:
If described terminal uses 4 antennas to send described upstream control signaling, then pass through the transmission of described 4 antennas of the virtual realization of 2 antennas.
10. a terminal that adopts multiaerial system is characterized in that, comprising:
Acquiring unit is used to obtain the time domain orthogonal resource by the index indication;
Transmitting element is used for using on different antennas different described time domain orthogonal resources to send upstream control signaling.
11. terminal according to claim 10 is characterized in that, described transmitting element comprises:
First sending module is used to use the time domain orthogonal resource of first index indication that described upstream control signaling is expanded to current time slots and is used to transmit described uplink control signaling OFDM symbol, and uses first antenna transmission;
Second sending module, the time domain orthogonal resource that is used for using the indication of second index with described upstream control signaling expand to described current time slots be used to transmit described uplink control signaling OFDM symbol, and use second antenna transmission.
12. terminal according to claim 11 is characterized in that, described transmitting element also comprises:
The 3rd sending module, be used to use different time domain orthogonal resources or different frequency domain orthogonal resources to obtain uplink demodulation reference signal on described first antenna and second antenna, and described uplink demodulation reference signal is mapped to transmit on the OFDM symbol of demodulated reference signal with described first antenna and corresponding being used to of second antenna sends; Send the out-hole run reference signal if desired simultaneously, then described out-hole run reference signal is mapped on the OFDM symbol that is used for the transmission measurement reference signal corresponding and sends with described first antenna and second antenna.
13. terminal according to claim 10 is characterized in that, described acquiring unit comprises:
Acquisition module is used for obtaining described index from received signaling;
Search module, be used for searching the described time domain orthogonal resource corresponding with described index in this locality.
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| CN201010258985.XA CN101917380B (en) | 2010-08-16 | 2010-08-16 | The sending method of downlink and uplink control signals through multi-antenna system and device |
| PCT/CN2011/070079 WO2012022128A1 (en) | 2010-08-16 | 2011-01-07 | Uplink control signaling transmission method and device for multi-antenna system |
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| WO2012022128A1 (en) * | 2010-08-16 | 2012-02-23 | 中兴通讯股份有限公司 | Uplink control signaling transmission method and device for multi-antenna system |
| WO2018112932A1 (en) * | 2016-12-23 | 2018-06-28 | 广东欧珀移动通信有限公司 | Data transmission method and apparatus |
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Also Published As
| Publication number | Publication date |
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| WO2012022128A1 (en) | 2012-02-23 |
| CN101917380B (en) | 2016-06-15 |
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