CN102064870A - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN102064870A CN102064870A CN2010106160294A CN201010616029A CN102064870A CN 102064870 A CN102064870 A CN 102064870A CN 2010106160294 A CN2010106160294 A CN 2010106160294A CN 201010616029 A CN201010616029 A CN 201010616029A CN 102064870 A CN102064870 A CN 102064870A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
Abstract
The invention discloses a data transmission method and device. The data transmission method comprises the following steps: in a decision cycle of a data transmission mode, a transmitting end acquires a current data transmission mode; the transmitting end selects a group of antennae thereof according to the current data transmission mode; the transmitting end transmits data according to the current data transmission mode through the antennae. By the invention, spatial correlation requirement of a multi-antenna data transmission mode can be adapted effectively and the performance of a system can be improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method for uplink and device.
Background technology
Multi-antenna technology can increase the flow of the coverage of system, the stability that promotes link and raising system when significantly not increasing the wireless communication system cost.The data transmission modes of multi-antenna technology comprises the technology that wave beam forming, cyclic delay diversity and they combine with space diversity and spatial reuse.
Wherein, space diversity (Spatial Diversity, SD) can improve the stability of link, its transmitting terminal as shown in Figure 1, this transmitting terminal disposes M root physical antenna altogether, the channel of corresponding M equivalence of difference, information source sends through corresponding M root physical antenna then through chnnel coding, M data flow of modulation laggard row space diversity coding formation; And spatial reuse (Spatial Multiplexing, SM) can under the situation that does not increase bandwidth, improve the throughput of system, its transmitting terminal as shown in Figure 2, this transmitting terminal disposes M root physical antenna altogether, the channel of corresponding M equivalence of difference, information source forms M data flow through chnnel coding, the laggard row space multiplexing and encoding of modulation, sends through corresponding M root physical antenna then.
(Beamforming BF) is based on the adaptive antenna principle to wave beam forming, utilizes aerial array to pass through advanced signal processing algorithm respectively to a kind of technology of each antenna element weighted.As shown in Figure 3, data send multiply by weights on the corresponding physical antenna when sending after, and all physical antennas are equivalent to a virtual-antenna.When space diversity and wave beam forming are used in combination, cry the space diversity wave beam forming (Spatial Diversity Beamforming, SD+BF).Fig. 4 is a kind of transmitting terminal schematic diagram of wave beam forming and space diversity combination (being the space diversity wave beam forming), as shown in Figure 4, the always total M*N root physical antenna of this transmitting terminal, be divided into M subarray, each subarray is done wave beam forming, form a virtual-antenna, constitute space diversity between many virtual-antennas.Spatial reuse combines with wave beam forming, cry the spatial reuse wave beam forming (Spatial Multiplexing Beamforming, SM+BF).Fig. 5 is a kind of transmitting terminal schematic diagram of wave beam forming and spatial reuse combination, as shown in Figure 5, and the always total M*N root physical antenna of this transmitting terminal, be divided into M subarray, each subarray is done wave beam forming, forms a virtual-antenna, constitutes spatial reuse between many virtual-antennas.
Cyclic delay diversity (Cyclic Delay Diversity, CDD) be OFDM (OrthogonalFrequency Division Multiplexing, OFDM) a kind of many antenna transmission diversity scheme of using always in the technology, it sends identical frequency domain data and the OFDM symbol of time domain is carried out different circulation delays on each physical antenna, obtain the frequency diversity gain with this.Fig. 6 is the schematic diagram of the transmitting terminal of cyclic delay diversity, as shown in Figure 6, after information source process chnnel coding, the modulation, through inverse Fourier transform (Inverse Fast Fourier Transform, IFFT) become time domain data, and after carrying out corresponding circulation delay with the circulation delay of corresponding physical antenna, (Cyclic Prefix CP) sends to add Cyclic Prefix.Here, M is a transmitting terminal physical antenna number, is generally 0, and the entire antenna group is equivalent to a virtual-antenna.Space diversity combines with the diversity cyclic delay diversity, cry the space diversity cyclic delay diversity (Spatial Diversity Cyclic Delay Diversity, SD+CDD).Fig. 7 is the transmitting terminal schematic diagram that a kind of space diversity combines with CDD, as shown in Figure 7, and the always total M*N root physical antenna of this transmitting terminal, be divided into M subarray, each subarray is CDD, forms a virtual-antenna, and constitutes spatial diversity system between virtual-antenna.Spatial reuse combines with cyclic delay diversity, cry the spatial reuse cyclic delay diversity (SpatialMultiplexing Cyclic Delay Diversity, SM+CDD).Fig. 8 is the transmitting terminal schematic diagram that a kind of space diversity or spatial reuse combine with CDD, as shown in Figure 8, and always total M*N root physical antenna, be divided into M subarray, each subarray is CDD, forms a virtual-antenna, and constitutes space multiplexing system between virtual-antenna.
Above-mentioned every kind of technology all has its environment of applications.Wherein, BF, SD+BF and SM+BF need to utilize up channel or receiving terminal to feed back the weights that obtain wave beam forming, therefore are called the closed loop correlation technique; And CDD, SD+CDD, SM+CDD, SM and SD can independently not finish under transmitting terminal is known the situation of channel condition, is called the open loop correlation technique.In general, the closed loop correlation technique reaches when necessarily requiring in weights accuracy and promptness, and performance is better than open loop correlation technique, otherwise may be good not as the open loop correlation technique.SM+BF, SM+CDD and SM can send different data flow improving the throughput of system when channel condition is relatively good, but generally cover smaller, the receiving terminal of suitable cell inside relatively.And BF, SD+BF, CDD, SD+CDD and SD mainly lean against space dimension introduce redundant to reach diversity gain, covers bigger, relatively suitable cell edge or mobile bigger receiving terminal.
In actual applications, in order to reach the requirement that up-downgoing covers, the antenna when generally the number of antennas of transmitting terminal when sending data is than the reception data lacks, and therefore need send data by the selection portion divided antenna in all physical antennas.Different multi-antenna technologies is different to the correlation requirement in space, and what have requires spatial coherence low, and what have requires spatial coherence big.At present, correlation technique can not be selected suitable antenna according to current transmission data pattern under the situation that the transmission data pattern of transmitting terminal is switched according to scene adaptive, thereby has reduced the performance of system.
Summary of the invention
Main purpose of the present invention is to provide a kind of data transmission method for uplink and device, to address the above problem at least.
According to an aspect of the present invention, provide a kind of data transmission method for uplink, having comprised: in the judgement cycle of data transmission modes, transmitting terminal obtains the current data sending mode; Described transmitting terminal is selected one group of antenna of described transmitting terminal according to described current data sending mode; Described transmitting terminal sends data according to described current data sending mode tissue, and uses the described transmission data of selecting of described antenna transmission.
According to a further aspect in the invention, provide a kind of data sending device, be positioned at transmitting terminal, this device comprises: the pattern acquisition module was used for obtaining the current data sending mode of described transmitting terminal in the judgement cycle of data transmission modes; Antenna Selection Module is used for selecting according to described current data sending mode one group of antenna of described transmitting terminal; Data transmission blocks is used for sending data according to described current data sending mode tissue, and the described transmission data of described antenna transmission of using described Antenna Selection Module to select.
By the present invention, transmitting terminal can be selected one group to be fit to the antenna transmission data of current data transmission modes adaptively according to the current data sending mode, solved in the correlation technique under the situation that the data transmission modes of many antennas is switched according to scene adaptive, problem that can't adaptive selection antenna configurations, thereby adapted to the spatial coherence requirement of the data transmission modes of many antennas effectively, improved the performance of system.
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 space diversity transmitting terminal schematic diagram according to correlation technique;
Fig. 2 is the spatial reuse transmitting terminal schematic diagram according to correlation technique;
Fig. 3 is the BF transmitting terminal schematic diagram according to correlation technique;
Fig. 4 is the SD+BF transmitting terminal schematic diagram according to correlation technique;
Fig. 5 is the SM+BF transmitting terminal schematic diagram according to correlation technique;
Fig. 6 is the CDD transmitting terminal schematic diagram according to correlation technique;
Fig. 7 is the SD+CDD transmitting terminal schematic diagram according to correlation technique;
Fig. 8 is the SM+CDD transmitting terminal schematic diagram according to correlation technique;
Fig. 9 is the flow chart according to the data transmission method for uplink of the embodiment of the invention;
Figure 10 is the structural representation according to the data sending device of the embodiment of the invention;
Figure 11 is the linear array schematic diagram of single-polarized antenna or omnidirectional antenna;
Figure 12 is the linear array schematic diagram of dual polarized antenna;
Figure 13 a is the schematic diagram that a kind of transmitting terminal antenna is provided with in the embodiment of the invention;
Figure 13 b is the schematic diagram that another kind of transmitting terminal antenna is provided with in the embodiment of the invention;
Figure 13 c is the schematic diagram that another transmitting terminal antenna is provided with in the embodiment of the invention;
Figure 13 d is the schematic diagram that another transmitting terminal antenna is provided with in 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. 9 is the flow chart according to the data transmission method for uplink of the embodiment of the invention, and as shown in Figure 9, this data transmission method for uplink mainly may further comprise the steps (step S902-step S906):
Step S902, in the judgement cycle of data transmission modes, transmitting terminal obtains the current data sending mode;
For example, transmitting terminal can for example, can be that the user disposes on the backstage according to the pre-configured current data sending mode that obtains; Perhaps, transmitting terminal also can carry out self adaptation according to channel condition information and obtain, particularly, transmitting terminal can be according to current state information of channel, calculate the spectrum efficiency of various data transmission modes, the data transmission modes of selecting spectrum efficiency maximum wherein is as described current data sending mode, wherein, various data transmission modes include but not limited to: wave beam forming (BF), space diversity (SD), spatial reuse (SM), space diversity wave beam forming (SD+BF), spatial reuse wave beam forming (SM+BF), cyclic delay diversity (CDD), space diversity cyclic delay diversity (SD+CDD) and spatial reuse cyclic delay diversity (SM+CDD).
Step S904, transmitting terminal select one group of antenna of described transmitting terminal according to described current data sending mode;
For example, if the current data sending mode is space diversity or spatial reuse, then transmitting terminal is selected the M root antenna of space maximum spatially, and this M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow; If the current data sending mode is a cyclic delay diversity, then transmitting terminal is selected the M root antenna of space maximum spatially, and this M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein, M is the number of antennas that transmitting terminal is used for doing circulation delay; If the current data sending mode is space diversity cyclic delay diversity or spatial reuse cyclic delay diversity, then transmitting terminal is selected M sub-aerial array of space maximum spatially, and the antenna in each sub antenna array is more or less the same in 1 at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow; If the current data sending mode is a wave beam forming, then transmitting terminal is selected the M root antenna of space minimum spatially, and this M root antenna differs maximum at the number of each polarised direction, and wherein M is the number of antennas that transmitting terminal is used for doing wave beam forming; If the current data sending mode is space diversity wave beam forming or spatial reuse wave beam forming, then transmitting terminal is selected M sub-aerial array of space maximum spatially, and the antenna in each sub antenna array differs maximum at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow.
Step S906, transmitting terminal sends data according to described current data sending mode tissue, and uses the described transmission data of selecting of described antenna transmission.
The said method that provides by the embodiment of the invention, transmitting terminal can select one group of antenna to be fit to current data transmission modes adaptively, thereby adapted to the spatial coherence requirement of the data transmission modes of many antennas effectively, and then improved the performance of system.
Figure 10 is the structural representation according to the data sending device of the embodiment of the invention, and this device is positioned at transmitting terminal.As shown in figure 10, this device mainly comprises: pattern acquisition module 10, Antenna Selection Module 20 and data transmission blocks 30.Wherein, pattern acquisition module 10 was used in the judgement cycle of data transmission modes, obtained described transmitting terminal current data sending mode; Antenna Selection Module 20 is used for selecting according to described current data sending mode one group of antenna of described transmitting terminal; Data transmission blocks 30 is used for sending data according to described current data sending mode tissue, and the described transmission data of described antenna transmission of using described Antenna Selection Module to select.
Wherein, pattern acquisition module 10 can be according to setting in advance the current data sending mode that obtains transmitting terminal, and for example, the user can dispose the current data sending mode of transmitting terminal from the backstage; Perhaps, pattern acquisition module 10 also can be according to current state information of channel, calculate the spectrum efficiency of various data transmission modes, the data transmission modes of selecting spectrum efficiency maximum wherein is as the current data sending mode, wherein, various data transmission modes include but not limited to: wave beam forming (BF), space diversity (SD), spatial reuse (SM), space diversity wave beam forming (SD+BF), spatial reuse wave beam forming (SM+BF), cyclic delay diversity (CDD), space diversity cyclic delay diversity (SD+CDD) and spatial reuse cyclic delay diversity (SM+CDD).
Wherein, when the current data sending mode that Antenna Selection Module 20 obtains at pattern acquisition module 10 is space diversity or spatial reuse, select the M root antenna of space maximum spatially, this M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow; When the current data sending mode that obtains at pattern acquisition module 10 is cyclic delay diversity, select the M root antenna of space maximum spatially, this M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein, M is the number of antennas that transmitting terminal is used for doing circulation delay; When the current data sending mode that obtains at pattern acquisition module 10 is space diversity cyclic delay diversity or spatial reuse cyclic delay diversity, select M sub-aerial array of space maximum spatially, and the antenna in each sub antenna array is more or less the same in 1 at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow; When the current data sending mode that obtains at pattern acquisition module 10 is wave beam forming, select the M root antenna of space minimum spatially, this M root antenna differs maximum at the number of each polarised direction, and wherein M is the number of antennas that transmitting terminal is used for doing wave beam forming; When the current data sending mode that obtains at pattern acquisition module 10 is space diversity wave beam forming or spatial reuse wave beam forming, select M sub-aerial array of space maximum spatially, and the antenna in each sub antenna array differs maximum at the number of each polarised direction, and wherein M is the quantity that transmitting terminal sends data flow.
The above-mentioned data sending device that provides by the embodiment of the invention, can be when transmitting terminal sends data, select to send data with the adaptive one group of antenna of current data sending mode of transmitting terminal, thereby adapted to the spatial coherence requirement of the data transmission modes of many antennas effectively, improved the performance of system.
Wireless communication system comprises transmitting terminal and receiving terminal, and the transmitting terminal in the embodiment of the invention is the equipment that is used to send data or information, such as macro base station or little base station etc.; Receiving terminal is each Terminal Type that is used to receive data or information, as travelling carriage, handheld device or data card etc.Introducing each embodiment of the present invention below is that the basis is implemented with this wireless communication system all.Described many transmitting antennas can be to be placed on the single-polarized antenna or the omnidirectional antenna of isolating mutually with space length on the different physical locations, as shown in figure 11.Also be placed on the multi-polarization antenna of isolating mutually with space length on the different physical locations, wherein many multi-polarization antennas of same physical location are isolated with polarised direction.Only as shown in figure 12 at the dual polarized antenna of positive and negative 45 ° of polarization.
Embodiment one
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is a space diversity;
It specifically can be the spectrum efficiency of calculating the data transmission modes of every kind of many antennas, selecting the multidata sending mode of spectrum efficiency maximum is current data transmission modes, wherein, in the present embodiment, the spectrum efficiency maximum of space diversity, selecting spatial diversity mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 2 single polarizations or omnidirectional antenna, shown in Figure 13 a, select two maximum antennas of distance on the space, owing to have only 2 antennas altogether, so select all antennas, antenna 1 and antenna 2, here owing to having only 1 polarised direction, so two antennas all belong to same polarised direction;
(b) M is 2, and transmitting terminal has 2 dual polarized antennas, shown in Figure 13 b, selects two maximum antennas of distance on the space, because two antennas are all at same position, so can only select these two antennas of same position.But these two antennas belong to two polarised directions respectively;
(c) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, shown in Figure 13 c, selects two maximum antennas of distance on the space, antenna 1 and antenna 8, owing to have only 1 polarised direction, two antennas all belong to same direction;
(d) M is 2, and transmitting terminal has 8 dual polarized antennas, shown in Figure 13 d, selects two maximum antennas of distance on the space, and 1 antenna of each polarised direction, i.e. antenna 1 and antenna 8 or select antenna 2 and antenna 7.
Step 3, data transmission blocks 30 are encoded data flow and selected with step 2 by space diversity antenna transmission data flow.
Embodiment two
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is a spatial reuse;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.Wherein, in the present embodiment, the spectrum efficiency maximum of spatial reuse, selecting space multiplexing mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 2 single polarizations or omnidirectional antenna, shown in Figure 13 a, select two maximum antennas of distance on the space, owing to have only 2 antennas altogether, so select all antennas, antenna 1 and antenna 2, here owing to having only 1 polarised direction, so selected two antennas all belong to same polarised direction;
(b) M is 2, and transmitting terminal has 2 dual polarized antennas, shown in Figure 13 b, selects two maximum antennas of distance on the space, because two antennas are all at same position, so can only select these two antennas of same position.But these two antennas belong to two polarised directions respectively;
(c) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, shown in Figure 13 c, selects two maximum antennas of distance on the space, antenna 1 and antenna 8, owing to have only 1 polarised direction, two antennas all belong to same direction;
(d) M is 2, and transmitting terminal has 8 dual polarized antennas, shown in Figure 13 d, selects two maximum antennas of distance on the space, and 1 antenna of each polarised direction, i.e. antenna 1 and antenna 8 or select antenna 2 and antenna 7.
This data flow of antenna transmission that the data flow that step 3, data transmission blocks 30 will send to receiving terminal is encoded by spatial reuse and selected with step 2.
Embodiment three
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and selecting the current data sending mode is cyclic delay diversity;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes, in the present embodiment, the spectrum efficiency maximum of cyclic delay diversity, selecting cdd mode is current data transmission modes;
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 2 single polarizations or omnidirectional antenna, shown in Figure 13 a, select two maximum antennas of distance on the space, owing to have only 2 antennas altogether, so select all antennas, antenna 1 and antenna 2, here owing to having only 1 polarised direction, so selected two antennas all belong to same polarised direction;
(b) M is 2, and transmitting terminal has 2 dual polarized antennas, shown in Figure 13 b, selects two maximum antennas of distance on the space, because two antennas are all at same position, so can only select these two antennas of same position.But these two antennas belong to two polarised directions respectively;
(c) M is 4, and transmitting terminal has 8 single polarizations or omnidirectional antenna, shown in Figure 13 c, select 4 maximum antennas of distance on the space, antenna 1, antenna 3, antenna 5, antenna 8, perhaps select antenna 1, antenna 4, antenna 6, antenna 8, owing to have only 1 polarised direction, 4 antennas all belong to same direction;
(d) M is 4, and transmitting terminal has 8 dual polarized antennas, shown in Figure 13 d, selects 4 maximum antennas of distance on the space, and 2 antennas of each polarised direction, i.e. antenna 1, antenna 2, antenna 5, antenna 8.
The data flow that step 3, data transmission blocks 30 will send to receiving terminal is 2 antennas of selecting and carry out corresponding delayed delivery set by step.
Embodiment four
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is the space diversity cyclic delay diversity;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.In the present embodiment, the spectrum efficiency maximum of space diversity cyclic delay diversity, selecting the space diversity cdd mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, need send data with 4 antennas.Shown in Figure 13 c, select two maximum sub-aerial arrays of distance on the space, 2 antennas of each subarray, owing to have only a polarised direction, so two antennas belong to same direction.Promptly select antenna 1 and antenna 2 to be 1 group and do cyclic delay diversity.Select antenna 7 and 8 to be one group and do cyclic delay diversity.
(b) M is 2, and transmitting terminal has 8 dual polarized antennas, need send data with 4 antennas.Shown in Figure 13 d, select two maximum subarrays of distance on the space, and 1 antenna of each polarised direction.Promptly select antenna 1 and antenna 2 to be 1 group and do cyclic delay diversity.Select antenna 7 and 8 to be one group and do cyclic delay diversity.
Step 3, the data flow that data transmission blocks 30 will send to receiving terminal is encoded by space diversity and is sent a data flow with each sub antenna array that step 2 is selected, and wherein the antenna of sub antenna array sends same data flow with the mode of cyclic delay diversity.
Embodiment five
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is the spatial reuse cyclic delay diversity;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.In the present embodiment, the spectrum efficiency maximum of spatial reuse cyclic delay diversity, selecting the spatial reuse cdd mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, need send data with 4 antennas.Shown in Figure 13 c, select two maximum sub-aerial arrays of distance on the space, 2 antennas of each subarray, owing to have only a polarised direction, so two antennas belong to same direction.Promptly select antenna 1 and antenna 2 to be 1 group and do cyclic delay diversity.Select antenna 7 and 8 to be one group and do cyclic delay diversity;
(b) M is 2, and transmitting terminal has 8 dual polarized antennas, need send data with 4 antennas.Shown in Figure 13 d, select two maximum subarrays of distance on the space, and 1 antenna of each polarised direction.Promptly select antenna 1 and antenna 2 to be 1 group and do cyclic delay diversity.Select antenna 7 and 8 to be one group and do cyclic delay diversity.
Step 3, data transmission blocks 30 are encoded data flow and are sent a data flow with each sub antenna array that step 2 is selected by space diversity, wherein the antenna of sub antenna array sends same data flow with the mode of cyclic delay diversity.
Embodiment six
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is a wave beam forming.
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.In an embodiment, the spectrum efficiency maximum of wave beam forming, selecting beam-forming mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 2 single polarizations or omnidirectional antenna, shown in Figure 13 a, select two minimum antennas of distance on the space, owing to have only 2 antennas altogether, so select all antennas, antenna 1 and antenna 2, here owing to having only 1 polarised direction, so selected two antennas all belong to same polarised direction;
(b) M is 2, and transmitting terminal has 2 dual polarized antennas, shown in Figure 13 b, selects two minimum antennas of distance on the space, because two antennas are all at same position, so can only select these two antennas of same position.And have only two antennas, can only belong to two polarised directions respectively;
(c) M is 4, and transmitting terminal has 8 single polarizations or omnidirectional antenna, shown in Figure 13 c, selects 4 minimum antennas of distance on the space, antenna i, antenna i+1, antenna i+2, antenna i+3, and here, i can get 1,2,3,4,5.Owing to have only 1 polarised direction, 4 antennas all belong to same direction;
(d) M is 4, and transmitting terminal has 8 dual polarized antennas, shown in Figure 13 d, select 4 minimum antennas of distance on the space, and the number of antennas of each polarised direction differs and be 4 to the maximum, promptly a direction has 4 antennas, 1 direction has 0 antenna, i.e. antenna 1, antenna 3, antenna 5, antenna 7; Perhaps select antenna 2, antenna 4, antenna 6, antenna 8.
After step 3, data transmission blocks 30 are carried out the wave beam forming weighting with data flow, 2 antenna transmission of selecting set by step.
Embodiment seven
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is the space diversity wave beam forming;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.In the present embodiment, the spectrum efficiency maximum of space diversity wave beam forming, selecting the space diversity beam-forming mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, need send data with 4 antennas.Shown in Figure 13 c, select two maximum sub-aerial arrays of distance on the space, 2 antennas of each subarray, owing to have only a polarised direction, so two antennas belong to same direction.Promptly select antenna 1 and antenna 2 to be 1 group and do wave beam forming.Select antenna 7 and 8 to be one group and do wave beam forming;
(b) M is 2, and transmitting terminal has 8 dual polarized antennas, need send data with 4 antennas.Shown in Figure 13 d, select two maximum subarrays of distance on the space, and the number of antennas of each polarised direction to differ maximum be 2.Promptly select antenna 1 and antenna 3 to be 1 group and do wave beam forming.Select antenna 5 and antenna 7 to be one group and do wave beam forming.
Step 3, data transmission blocks 30 are encoded data flow and are sent a data flow with each sub-array antenna that step 2 is selected by space diversity, wherein the antenna of subarray sends same data flow with the mode of wave beam forming weighting.
Embodiment eight
In the present embodiment, transmitting terminal is selected to send the antenna of data and is sent data to receiving terminal according to following steps each receiving terminal:
Step 1, pattern acquisition module 10 are according to channel condition information, and the data transmission modes of selecting many antennas is the spatial reuse wave beam forming;
For example, pattern acquisition module 10 can calculate the spectrum efficiency of the data transmission modes of every kind of many antennas, and selecting the data transmission modes of many antennas of spectrum efficiency maximum is current data transmission modes.In the present embodiment, the spectrum efficiency maximum of spatial reuse wave beam forming, selecting the spatial reuse beam-forming mode is current data transmission modes.
Corresponding concrete situation, Antenna Selection Module 20 can be selected corresponding antenna, for example:
(a) M is 2, and transmitting terminal has 8 single polarizations or omnidirectional antenna, need send data with 4 antennas.Shown in Figure 13 c, select two maximum sub-aerial arrays of distance on the space, 2 antennas of each subarray, owing to have only a polarised direction, so two antennas belong to same direction.Promptly select antenna 1 and antenna 2 to be 1 group and do wave beam forming.Select antenna 7 and 8 to be one group and do wave beam forming;
(b) M is 2, and transmitting terminal has 8 dual polarized antennas, need send data with 4 antennas.Shown in Figure 13 d, select two maximum subarrays of distance on the space, and the number of antennas of each polarised direction to differ maximum be 2.Promptly select antenna 1 and antenna 3 to be 1 group and do wave beam forming.Select antenna 5 and antenna 7 to be one group and do wave beam forming.
Step 3, data transmission blocks 30 are encoded data flow and are sent a data flow with each sub-array antenna that step 2 is selected by spatial reuse, wherein the antenna of subarray sends same data flow with the mode of wave beam forming weighting.
From above description, as can be seen, in embodiments of the present invention, transmitting terminal can be selected one group to be fit to the antenna transmission data of current data transmission modes adaptively according to the current data sending mode, solved in the correlation technique under the situation that the data transmission modes of many antennas is switched according to scene adaptive, problem that can't adaptive selection antenna configurations, thus the spatial coherence requirement of the data transmission modes of many antennas adapted to effectively, improved the performance of system.
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 (14)
1. a data transmission method for uplink is characterized in that, comprising:
In the judgement cycle of data transmission modes, transmitting terminal obtains the current data sending mode;
Described transmitting terminal is selected one group of antenna of described transmitting terminal according to described current data sending mode;
Described transmitting terminal sends data according to described current data sending mode tissue, and uses the described transmission data of selecting of described antenna transmission.
2. method according to claim 1 is characterized in that, described current data sending mode is space diversity or spatial reuse; Described transmitting terminal selects one group of antenna to comprise according to described data transmission modes:
Described transmitting terminal is selected the M root antenna of space maximum spatially, and described M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein, M is the quantity that described transmitting terminal sends data flow.
3. method according to claim 1 is characterized in that, described current data sending mode is a cyclic delay diversity; Described transmitting terminal selects one group of antenna to comprise according to described data transmission modes:
Described transmitting terminal is selected the M root antenna of space maximum spatially, and described M root antenna is more or less the same in 1 at the number of each polarised direction, and wherein, M is the number of antennas that described transmitting terminal is used to do circulation delay.
4. according to claim 2 or 3 described methods, it is characterized in that described transmitting terminal selects described M root antenna to comprise:
Described transmitting terminal is provided with 8 single polarizations or omnidirectional antenna, and described transmitting terminal is selected in described 8 single polarizations or the omnidirectional antenna the maximum identical M root antenna of polarised direction of distance on the space; Perhaps
Described transmitting terminal is provided with 8 dual polarized antennas, and described transmitting terminal is selected in described 8 dual polarized antennas the maximum M root antenna of distance on the space, and described M root antenna comprises the antenna of two polarised directions of described transmitting terminal.
5. method according to claim 1 is characterized in that, described current data sending mode is space diversity cyclic delay diversity or spatial reuse cyclic delay diversity; Described transmitting terminal selects one group of antenna to comprise according to described data transmission modes:
Described transmitting terminal is selected M sub-aerial array of space maximum spatially, and the antenna in each the sub antenna array in the individual sub-aerial array of described M is more or less the same in 1 at the number of each polarised direction, wherein, M is the quantity that described transmitting terminal sends data flow.
6. method according to claim 5 is characterized in that, described transmitting terminal selects described M root antenna to comprise:
Described transmitting terminal is provided with 8 single polarizations or omnidirectional antenna, need N root antenna transmission data, described transmitting terminal is selected in described 8 single polarizations or the omnidirectional antenna M maximum aerial array of distance on the space, and each aerial array comprises the identical antenna of N/M root polarised direction; Perhaps
Described transmitting terminal is provided with 8 dual polarized antennas, need N root antenna transmission data, described transmitting terminal is selected in described 8 dual polarized antennas M maximum aerial array of distance on the space, and each aerial array comprises N/M root antenna, and described N/M root antenna comprises the antenna of two polarised directions;
Wherein, N is the integer greater than zero.
7. method according to claim 1 is characterized in that, described current data sending mode is a wave beam forming; Described transmitting terminal selects one group of antenna to comprise according to described data transmission modes:
Described transmitting terminal is selected the M root antenna of space minimum spatially, and described M root antenna differs maximum at the number of each polarised direction, and wherein, M is the number of antennas that described transmitting terminal is used to do wave beam forming.
8. method according to claim 7 is characterized in that, described transmitting terminal selects described M root antenna to comprise:
Described transmitting terminal is provided with 8 single polarizations or omnidirectional antenna, and described transmitting terminal is selected in described 8 single polarizations or the omnidirectional antenna the minimum identical M root antenna of polarised direction of distance on the space; Perhaps
Described transmitting terminal is provided with 8 dual polarized antennas, and described transmitting terminal is selected in described 8 dual polarized antennas the minimum M root antenna of distance on the space, and the antenna data of each polarised direction differs and is M to the maximum in the described M root antenna.
9. method according to claim 1 is characterized in that, described current data sending mode is space diversity wave beam forming or spatial reuse wave beam forming; Described transmitting terminal selects one group of antenna to comprise according to described data transmission modes:
Described transmitting terminal is selected M sub-aerial array of space maximum spatially, and the antenna in each the sub antenna array in the individual sub-aerial array of described M differs maximum at the number of each polarised direction, wherein, M is the quantity that described transmitting terminal sends data flow.
10. method according to claim 9 is characterized in that, described transmitting terminal selects described M root antenna to comprise:
Described transmitting terminal is provided with 8 single polarizations or omnidirectional antenna, need with N root antenna transmission data, described transmitting terminal is selected in described 8 single polarizations or the omnidirectional antenna M maximum sub-array antenna of distance on the space, and each sub-array antenna comprises a N/M root antenna on the polarised direction; Perhaps
Described transmitting terminal is provided with 8 dual polarized antennas, need with N root antenna transmission data, described transmitting terminal is selected in described 8 dual polarized antennas M maximum sub-array antenna of distance on the space, a described M sub-array antenna comprises N root antenna, and to differ maximum be M to the antenna data of two polarised directions in the described N root antenna;
Wherein, N is the integer greater than zero.
11., it is characterized in that described antenna is to be positioned at the single-polarized antenna or the omnidirectional antenna of isolating mutually with space length on the different physical locations according to each described method in the claim 2,3 and 4 to 10; Perhaps, described antenna is many multi-polarization antennas with the polarised direction compartment that are positioned at same physical location.
12., it is characterized in that described transmitting terminal obtains the current data sending mode and comprises according to each described method in the claim 2,3 and 4 to 10:
Described transmitting terminal is according to current state information of channel, calculate the spectrum efficiency of various data transmission modes, the data transmission modes of selecting spectrum efficiency maximum wherein is as described current data sending mode, wherein, described various data transmission modes comprises: wave beam forming BF, space diversity SD, spatial reuse SM, space diversity wave beam forming SD+BF, spatial reuse wave beam forming SM+BF, cyclic delay diversity CDD, space diversity cyclic delay diversity SD+CDD and spatial reuse cyclic delay diversity SM+CDD.
13., it is characterized in that described transmitting terminal obtains the current data sending mode and comprises according to each described method in the claim 2,3 and 4 to 10: described transmitting terminal obtains the current data sending mode according to pre-configured.
14. a data sending device is positioned at transmitting terminal, it is characterized in that, comprising:
The pattern acquisition module was used for obtaining the current data sending mode of described transmitting terminal in the judgement cycle of data transmission modes;
Antenna Selection Module is used for selecting according to described current data sending mode one group of antenna of described transmitting terminal;
Data transmission blocks is used for sending data according to described current data sending mode tissue, and the described transmission data of described antenna transmission of using described Antenna Selection Module to select.
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| CN2010106160294A CN102064870A (en) | 2010-12-30 | 2010-12-30 | Data transmission method and device |
| PCT/CN2011/075827 WO2012088842A1 (en) | 2010-12-30 | 2011-06-16 | Data transmission method and device |
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| CN2010106160294A CN102064870A (en) | 2010-12-30 | 2010-12-30 | Data transmission method and device |
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Cited By (8)
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| WO2012088842A1 (en) * | 2010-12-30 | 2012-07-05 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN102932926A (en) * | 2011-08-12 | 2013-02-13 | 华为技术有限公司 | Antenna selection method, base station and user equipment |
| CN104022986A (en) * | 2014-05-21 | 2014-09-03 | 大唐移动通信设备有限公司 | Method for reducing multi-antenna interference and device thereof |
| WO2016000266A1 (en) * | 2014-07-04 | 2016-01-07 | 华为技术有限公司 | Multi-polarization transmitting/receiving antenna, and transmitting/receiving apparatus, system and method |
| CN108632181A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Data transmission method for uplink and device and data receiver method and device |
| US10735080B2 (en) | 2016-08-10 | 2020-08-04 | Huawei Technologies Co., Ltd. | Transmission scheme indication method, and data transmission method, apparatus, and system |
| WO2021170098A1 (en) * | 2020-02-28 | 2021-09-02 | 华为技术有限公司 | Data processing method and device therefor |
| WO2022183324A1 (en) * | 2021-03-01 | 2022-09-09 | 深圳市大疆创新科技有限公司 | Method and apparatus for determining information sending mode of wireless transmission apparatus, and device |
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| WO2016090631A1 (en) * | 2014-12-12 | 2016-06-16 | Huawei Technologies Co., Ltd. | Base station, mobile station and method thereof |
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| WO2012088842A1 (en) | 2012-07-05 |
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