CN101741454A - Multi-address access method and device of space-time frequency code domain - Google Patents
Multi-address access method and device of space-time frequency code domain Download PDFInfo
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Abstract
The invention discloses multi-address access method and device of a space-time frequency code domain. The multi-address access method comprises the following steps of: respectively configuring multi-address modes for the transmission of the uplink information and the downlink information of each domain of a plurality of domains and combined domains formed by the domains of the plurality of domains under the condition that a system comprises the plurality of domains; and transmitting the uplink information and the downlink information of each domain and each combined domain according to the configured multi-address modes. The invention provides the simple multi-address modes, ensures the link property, enhances the throughput of a whole network and realizes the compatibility of the traditional system.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of space-time frequency code domain multiple access method and device.
Background technology
At OFDM (Orthogonal Frequency Division Multiplexing, abbreviate OFDM as) in the system, OFDM is decomposed into the experimental process data flow with data flow, each sub data flow has lower bit rate, and last, OFDM is modulated to the transmission that walks abreast on the corresponding subcarrier respectively with each sub data flow, in addition, need to prove, be not only between each subcarrier of OFDM mutually orthogonal, and have 1/2 overlapping.
At Long Term Evolution (Long Term Evolution, abbreviate LTE as) in the system, need take into full account user terminal (User Terminal, abbreviate UT as) peak-to-average power ratio (PeakAverage Power Ratio, abbreviate PAPR as) problem, wherein, the PAPR problem is meant: the instantaneous value of the output signal of transmitter has bigger fluctuation, this will require more intrasystem parts, for example, power amplifier, divide and insert (Add/Drop abbreviates A/D as), D/A (Digital-to-Analog abbreviates D/A as) transducer etc. has very big linear dynamic range, and, the non-linear of these parts also can produce nonlinear distortion to the bigger signal of dynamic range, and the harmonic wave that is produced can cause the phase mutual interference of subchannel, thereby influences the performance of ofdm system.
In the LTE system, because the problem of PAPR, the multi-access mode that sends uplink information has finally been selected SC-FDMA, this is because the information symbol of single-carrier system is (or some the simple distortion) that directly is modulated on the time domain, so its PAPR is lower, but, in multicarrier system, owing to have a plurality of carrier waves to transmit information symbol simultaneously at one time, and the information symbol of each carriers carry is separate, therefore, the PAPR of multicarrier system is than the big 2-3dB of PAPR of single-carrier system, and high PAPR has increased the requirement to the power amplifier linearity, this is very unfavorable to UT, therefore, the preferably selection of uplink multi-address is the single-carrier system of band Cyclic Prefix, i.e. SC-FDMA.
At present, the research that inserts for the multiple access based on ofdm system is a focus, but, but seldom research of access mode for space-time frequency code domain, especially system is adopted more than a kind of research of access mode still less, with the LTE system is example (up-downgoing of LTE system at present has only an access mode respectively), the LTE system descending adopts OFDMA, up employing SC-FDMA, but, the demand that can not be suitable for new system well (for example, LTE-Advanced system and IMT-Advanced system propose very high requirement to peak-data rates and spectrum efficiency), the therefore present technical scheme of being badly in need of a kind of access mode of space-time frequency code domain.
Summary of the invention
The access mode of considering existing space-time frequency code domain can not well be suitable for new system demand problem and the present invention is proposed, for this reason, main purpose of the present invention is to provide a kind of space-time frequency code domain multiple access method and device, to solve the problems referred to above that exist in the correlation technique.
According to an aspect of the present invention, provide a kind of space-time frequency code domain multiple access method.
Space-time frequency code domain multiple access method according to the present invention comprises: comprise in system under the situation in a plurality of territories that multi-access mode is disposed in the transmission of the up-link information of the combination fields of forming to each territory in a plurality of territories and by the territory in a plurality of territories and the transmission of downlink information respectively; Each territory and each combination fields are carried out the transmission of up-link information and/or the transmission of downlink information according to the multi-access mode to its configuration.
Wherein, a plurality of territories comprise: spatial domain, time-domain, frequency domain and code word territory; Combination fields comprise following one of at least: empty time domain, empty frequency domain, idle bit territory, time-frequency domain, time-code territory, sign indicating number territory, empty time-frequency domain, empty time-code territory, empty sign indicating number frequently territory, time frequency code domain frequently.
Wherein, the multi-access mode that the up-link information of each territory and each combination fields is sent configuration be following one of at least: single-carrier frequency division multiple access is that SC-FDMA, OFDM insert OFDMA, the sub-clustering OFDM inserts is clustered SC-FDMA, N x SC-FDMA (N SC-FDMA).
In addition, for spatial domain, after having carried out the multi-access mode configuration, method further comprises: on spatial domain, the information between configuration data stream sends the multi-access mode that adopts.
In addition, for time-domain, after having carried out the multi-access mode configuration, method further comprises: on time-domain, the information that disposes each subframe and OFDM symbol, time slot, radio frames, superframe sends the multi-access mode that adopts.
In addition, for frequency domain, after having carried out the multi-access mode configuration, method further comprises: on frequency domain, dispose the information transmission of each transmitting terminal institute dedicated bandwidth and the information of each Resource Block and send the multi-access mode that adopts.
In addition, for the code word territory, after having carried out the multi-access mode configuration, method further comprises: on the code word territory, the information that disposes the resource of each code word correspondence sends the multi-access mode that adopts.
Wherein, comprise in system under the situation of new system and old system, specifically being treated to of multi-access mode disposed in the transmission of the up-link information of each territory in a plurality of territories and each combination fields and the transmission of downlink information respectively: to the terminal of old system, the information of each territory of its access and the down link of each combination fields sends the multi-access mode that is set to adopt OFDMA, and the information of up link sends the multi-access mode that is set to adopt SC-FDMA.
In addition, each territory and each combination fields are disposed respectively after the multi-access mode, further comprise: on spatial domain, use the space division multiplexing mode to send corresponding data to receiving terminal; On time-domain, use time division multiplexing mode to send corresponding data to receiving terminal; On frequency domain, use the frequency division multiplexing mode to send corresponding data to receiving terminal; On the code word territory, use the code division multiplexing mode to send corresponding data to receiving terminal.
According to an aspect of the present invention, provide a kind of space-time frequency code domain multiple access access device.
Space-time frequency code domain multiple access access device according to the present invention comprises: configuration module, be used for comprising under the situation in a plurality of territories, multi-access mode is disposed in the transmission of the up-link information of each combination fields in each territory in a plurality of territories and a plurality of territory and the transmission of downlink information respectively in system; Sending module is used for carrying out the transmission of up-link information and/or the transmission of downlink information according to the multi-access mode to its configuration on each territory and each combination fields.
By means of technical scheme of the present invention, be configured by access mode space-time frequency code domain, the access mode that has solved existing space-time frequency code domain can not well be suitable for the problem of the demand of new system, a kind of simple access mode is provided, guaranteed link performance, improved the throughput of whole net, and realized compatibility existing system.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 2 is the up space division multiplexing multiple access schematic diagram according to the example 1 of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 3 is the up time-division multiplexing multiple access schematic diagram according to the example 2 of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 4 is the uplink FDM multiple access schematic diagram according to the example 3 of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 5 is the up code division multiplexing multiple access schematic diagram according to the example 4 of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 6 is the last line space frequency division multiplexing multiple access schematic diagram according to the example 4 of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 7 is that the descending space-time frequency code according to the space-time frequency code domain multiple access method of the embodiment of the invention divides multiplexing multiple access schematic diagram;
Fig. 8 is the structural representation according to the SC-FDMA transmitter of the space-time frequency code domain multiple access method of the embodiment of the invention;
Fig. 9 is the structural representation according to the OFDMA transmitter of the space-time frequency code domain multiple access method of the embodiment of the invention;
Figure 10 is the structural representation according to the clustered SC-FDMA transmitter of the space-time frequency code domain multiple access method of the embodiment of the invention;
Figure 11 is the structural representation according to the NxSC-FDMA transmitter of the space-time frequency code domain multiple access method of the embodiment of the invention;
Figure 12 is the block diagram of space-time frequency code domain multiple access access device according to an embodiment of the invention.
Embodiment
Functional overview
In correlation technique, exist the access mode of existing space-time frequency code domain can not well be suitable for the problem of the demand of new system, and, different system has different demands, different terminals have different abilities, in the system in a plurality of territories, because the parts in the high-end UT have very big dynamic range, so this Terminal Type generally not will consider the PAPR problem, the present invention is in order better to obtain link performance, whole net throughput, and coverage, regulation, when up link, the information in each territory sends can adopt single-carrier frequency division multiple access (Single Carrier-Frequency Division Multiple Access, abbreviate SC-FDMA as) and OFDM access (Orthogonal Frequency DivisionMultiple Access, abbreviate OFDMA as) and the sub-clustering single-carrier frequency division multiple access, the multi-access mode that (clusteredSingle Carrier-Frequency Division Multiple Access abbreviates clusteredSC-FDMA as) and N x SC-FDMA (N SC-FDMA) combine.When down link, the information in each territory sends the form that all is preferably OFDMA, can certainly above-mentioned other multi-access modes.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Method embodiment
According to embodiments of the invention, a kind of space-time frequency code domain multiple access method is provided, Fig. 1 is the flow chart according to the space-time frequency code domain multiple access method of the embodiment of the invention, as shown in Figure 1, comprises following processing (step S102-step S104):
Step S102 comprises in system under the situation in a plurality of territories, disposes multi-access mode respectively to each territory in a plurality of territories and by the transmission of the up-link information of the combination fields of the territory in a plurality of territories combination and the transmission of downlink information; That is to say, the information of the uplink downlink of each territory and each combination fields is sent to adopt similar and different multi-access mode.
Wherein, above-mentioned a plurality of territory comprises: spatial domain, time-domain, frequency domain and code word territory; Combination fields comprise following one of at least: empty time domain, empty frequency domain, idle bit territory, time-frequency domain, time-code territory, sign indicating number territory, empty time-frequency domain, empty time-code territory, empty sign indicating number frequently territory, time frequency code domain frequently.
And, in step S102, the multi-access mode that the up-link information of each territory and each combination fields is sent configuration be following one of at least: SC-FDMA, OFDMA, clustered SC-FDMA, N x SC-FDMA.
That is to say that the multi-access mode that spatial domain, time-domain, frequency domain and code word territory all can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA to combine also can adopt identical multi-access mode.
Particularly, on spatial domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and use the space division multiplexing mode to send corresponding data to receiving terminal, in addition, on spatial domain, information between can also configuration data stream sends the multi-access mode that is adopted, promptly, the information of certain data flow sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On time-domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and use time-multiplexed mode to send corresponding data to receiving terminal, in addition, on time-domain, can also dispose each subframe and other times length is carried out the configuration of multi-access mode, comprising 1 OFDM symbol, 1 time slot, 1 subframe, 1 radio frames, 1 superframe that is to say, the information of each subframe and other times length sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On frequency domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and use the frequency division multiplexing mode to send corresponding data to receiving terminal, in addition, on frequency domain, the information that can dispose each transmitting terminal institute dedicated bandwidth sends, promptly, the information of each transmitting terminal institute dedicated bandwidth sends the multi-access mode that adopts and can change, next can be configured to other form constantly, and the information of each Resource Block sends the multi-access mode that adopts, promptly, the information of each Resource Block sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On the code word territory, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and uses the code division multiplexing mode to send corresponding data to receiving terminal.In addition, on the code word territory, the information that can also dispose the resource of each code word correspondence sends the multi-access mode that adopts, that is, the information of the resource of each code word correspondence sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
And, comprise in system under the situation of new system and old system, for the old system of compatibility, terminal to old system, the information of each territory of its access and the down link of each combination fields sends the multi-access mode that is set to adopt OFDMA, the information of up link sends the multi-access mode that is set to adopt SC-FDMA, and the information in up each territory of the terminal of other types sends can adopt above-mentioned other multi-access modes.
In addition, send for the information of the down link of each territory and combination fields, for the old system of compatibility, the information of the down link of every kind of territory or combination fields sends the form that all is preferably OFDMA, can certainly be above-mentioned other multi-access modes.
Step S104, each territory and each combination fields are carried out the transmission of up-link information and/or the transmission of downlink information according to the multi-access mode to its configuration.
Below in conjunction with example, technique scheme of the present invention is described in detail.
Example 1
On spatial domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and uses the space division multiplexing mode to send corresponding data to receiving terminal.
To be that example describes with 4 data flow below, as shown in Figure 2, the information of the 1st data flow S1 sends can adopt SC-FDMA, the information of the 2nd data flow S2 sends can adopt OFDMA, the information of the 3rd data flow S3 sends can adopt clustered SC-FDMA, the information of the 4th data flow S4 sends can adopt N xSC-FDMA, the information of 4 data flow sends the multi-access mode that adopts and can dispose, the multi-access mode that the i.e. information of 4 data flow transmission is adopted can change, and next can be configured to other form constantly.
Example 2
On time-domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and uses time division multiplexing mode to send corresponding data to receiving terminal.
To be that example describes with 1 subframe below (also can be the configuration that other times length is carried out multi-access mode, 1 OFDM symbol for example, 1 time slot, 1 subframe, 1 radio frames, 1 superframe etc.), as shown in Figure 3, the information of the 1st subframe T1 sends can adopt SC-FDMA, the information of the 2nd subframe T2 sends can adopt OFDMA, the information of the 3rd subframe T3 sends can adopt clustered SC-FDMA, and the information of the 4th subframe T4 sends can adopt N x SC-FDMA, by that analogy, the information of each subframe sends the multi-access mode that adopts and can dispose, that is, the information of each subframe sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
Example 3
On frequency domain, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and uses the frequency division multiplexing mode to send corresponding data to receiving terminal.
To send with the information of the actual used bandwidth of each transmitting terminal below and describe, as shown in Figure 4, the information of the 1st transmitting terminal institute dedicated bandwidth sends can adopt SC-FDMA, the 2nd transmitting terminal can adopt OFDMA, the information of the 3rd transmitting terminal institute dedicated bandwidth sends can adopt clustered SC-FDMA, the 4th transmitting terminal can adopt N xSC-FDMA, by that analogy, the information of each transmitting terminal institute dedicated bandwidth sends the multi-access mode that adopts and can dispose, promptly, the information of each transmitting terminal institute dedicated bandwidth sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
In addition, for certain transmitting terminal (for example, the 5th transmitting terminal among Fig. 4), its information sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode.
Send with the information of each Resource Block more below that to describe (also can be the configuration that other frequency ranges are carried out multi-access mode, 2 Resource Block for example, N Resource Block, the selectable frequency range of different transmitting terminals can be different), the information of the 1st Resource Block sends can adopt SC-FDMA, the information of the 2nd Resource Block sends can adopt OFDMA, the information of the 3rd Resource Block sends can adopt clustered SC-FDMA, the information of the 4th Resource Block sends can adopt N x SC-FDMA, by that analogy, the information of each Resource Block sends the multi-access mode that adopts and can dispose, promptly, the information of each Resource Block sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
Example 4
On the code word territory, the information of up link sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, also can adopt identical multi-access mode, and uses the code division multiplexing mode to send corresponding data to receiving terminal.
To describe with each code word below, as shown in Figure 5, the information of the resource of the 1st code word C1 correspondence sends can adopt SC-FDMA, the information of the resource of the 2nd code word C2 correspondence sends can adopt OFDMA, the information of the resource of the 3rd code word C3 correspondence sends can adopt clustered SC-FDMA, the information of the resource of the 4th code word C4 correspondence sends can adopt N x SC-FDMA, by that analogy, the information of the resource of each code word correspondence sends the multi-access mode that adopts and can dispose, promptly, the information of the resource of each code word correspondence sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
Example 5
The information of space-time frequency code domain sends the mode that can be used in combination SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA mutually, as shown in Figure 6, at empty frequency domain, in data flow, also can adopt the mode of SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously.For example, in data flow S 1, the information of the 1st Resource Block sends can adopt SC-FDMA, the information of the 2nd Resource Block sends can adopt OFDMA, the information of the 3rd Resource Block sends can adopt clustered SC-FDMA, the information of the 4th Resource Block sends can adopt N xSC-FDMA, and the information of the 5th Resource Block sends the mode that can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously.The information of data flow S2 sends and all adopts OFDMA.
As shown in Figure 7, OFDMA is preferably all adopted in the transmission of the downlink information of spatial domain, time domain, sign indicating number territory, frequency domain.
In addition, for the old system of compatibility (as LTE-A system compatible LTE system), can allow the interior information of the up link of original system that keeps of terminal works bandwidth of LTE send, that is, all adopt SC-FDMA, the information of down link sends and all adopts OFDMA.
Below, to adopt SC-FDMA, OFDMA, clustered SC-FDMA, when N xSC-FDMA multi-access mode is launched, the processing that transmission information is carried out is elaborated.
Fig. 8 is the structural representation of SC-FDMA transmitter, when using the SC-FDMA transmitter to carry out information emission, need carry out the operation of code block segmentation, chnnel coding, constellation modulation, DFT conversion, subcarrier mapping, IFFT conversion, interpolation CP to the information of emission, at last information be sent.Fig. 9 is the structural representation of OFDMA transmitter, when using the OFDMA transmitter to carry out information emission, need carry out the operation of code block segmentation, chnnel coding, constellation modulation, string and conversion, subcarrier mapping, IFFT conversion, interpolation CP to the information of emission, launch at last.Figure 10 is the structural representation of clustered SC-FDMA transmitter, when using clustered SC-FDMA transmitter to carry out information emission, need carry out the operation of code block segmentation, chnnel coding, constellation modulation, DFT conversion, subcarrier mapping, sub-clustering, IFFT conversion, interpolation CP to the information of needs emission, at last information be launched.Figure 11 is the structural representation of N x SC-FDMA transmitter, when using N x SC-FDMA transmitter to carry out information emission, need carry out code block segmentation, chnnel coding, constellation modulation, DFT conversion, subcarrier mapping, IFFT conversion to the information of emission, after passing through computing again, add the operation of CP to, at last information is launched.
As mentioned above, when uplink information transmissions, transmitter adopts identical or different multi-access mode to carry out the transmission of information according to concrete application domain, if that the information in territory transmission employing is SC-FDMA, receiving terminal just carries out demodulation process according to the inverse process of SC-FDMA; If that the information in territory sends employing is OFDMA, receiving terminal just carries out demodulation process according to the inverse process of OFDMA; If that the information in territory sends employing is clusteredSC-FDMA, receiving terminal just carries out demodulation process according to the inverse process of clustered SC-FDMA; If that the information in territory sends employing is N x SC-FDMA, receiving terminal just carries out demodulation process according to the inverse process of N xSC-FDMA; If the information in territory sends and adopted SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, then receiving terminal just carries out demodulation process according to the inverse process of every kind of multi-access mode.
When descending, the information in every kind of territory sends the form that all is preferably OFDMA, and receiving terminal carries out demodulation process according to the inverse process of OFDMA.
By above-mentioned processing, the access mode that has solved existing space-time frequency code domain can not well be suitable for the problem of the demand of new system, has guaranteed link performance, has improved the throughput of whole net, and has realized the compatibility to existing system.
Device embodiment
According to embodiments of the invention, a kind of space-time frequency code domain multiple access access device is provided, Figure 12 is the block diagram of space-time frequency code domain multiple access access device according to an embodiment of the invention, as shown in figure 12, comprises configuration module 120, sending module 122.Below space-time frequency code domain multiple access access device of the present invention is described in detail.
Configuration module 120 is used for comprising under the situation in a plurality of territories in system, and multi-access mode is disposed in the transmission of the up-link information of each combination fields in each territory in a plurality of territories and a plurality of territory and the transmission of downlink information respectively.
Wherein, a plurality of territories comprise: spatial domain, time-domain, frequency domain and code word territory; Combination fields comprise following one of at least: empty time domain, empty frequency domain, idle bit territory, time-frequency domain, time-code territory, sign indicating number territory, empty time-frequency domain, empty time-code territory, empty sign indicating number frequently territory, time frequency code domain frequently.
And, the multi-access mode that configuration module 120 sends configuration to the up-link information of each territory and each combination fields be following one of at least: SC-FDMA, OFDMA, clustered SC-FDMA, N x SC-FDMA.
That is to say, the multi-access mode that configuration module 120 can all be configured to spatial domain, time-domain, frequency domain and code word territory to adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA to combine also can be configured to adopt identical multi-access mode.
Particularly, on spatial domain, configuration module 120 can send the mode that is configured to adopt SC-FDMA and OFDMA and clustered SC-FDMA and N xSC-FDMA with the information of up link, also can be configured to adopt identical multi-access mode, and use the space division multiplexing mode to send corresponding data to receiving terminal, in addition, on spatial domain, the information of configuration module 120 between can also configuration data stream sends the multi-access mode that is adopted, promptly, the information of certain data flow sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On time-domain, configuration module 120 can send the mode that is configured to adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA with the information of up link, also can be configured to adopt identical multi-access mode, and use time-multiplexed mode to send corresponding data to receiving terminal, in addition, on time-domain, the configuration that configuration module 120 can also dispose each subframe and other times length be carried out multi-access mode, comprising 1 OFDM symbol, 1 time slot, 1 subframe, 1 radio frames, 1 superframe that is to say, the information of each subframe and other times length sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On frequency domain, configuration module 120 can send the mode that is configured to adopt simultaneously SC-FDMA and OFDMA and clustered SC-FDMA and N xSC-FDMA with the information of up link, also can be configured to adopt identical multi-access mode, and use the frequency division multiplexing mode to send corresponding data to receiving terminal, in addition, on frequency domain, the information that configuration module 120 can also dispose each transmitting terminal institute dedicated bandwidth sends, promptly, the information of each transmitting terminal institute dedicated bandwidth sends the multi-access mode that adopts and can change, next can be configured to other form constantly, and the information of each Resource Block sends the multi-access mode that adopts, promptly, the information of each Resource Block sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
On the code word territory, configuration module 120 can send the mode that is configured to adopt simultaneously SC-FDMA and OFDMA and clustered SC-FDMA and N xSC-FDMA with the information of up link, also can be configured to adopt identical multi-access mode, and use the code division multiplexing mode to send corresponding data to receiving terminal.In addition, on the code word territory, the information that configuration module 120 can also dispose the resource of each code word correspondence sends the multi-access mode that adopts, promptly, the information of the resource of each code word correspondence sends the multi-access mode that adopts and can change, and next can be configured to other form constantly.
And, comprise in system under the situation of new system and old system, for the old system of compatibility, terminal for old system, the information of each territory that configuration module 120 can its access and the down link of each combination fields sends the multi-access mode that is set to adopt OFDMA, the information of up link sends the multi-access mode that is set to adopt SC-FDMA, and the information in up each territory of the terminal of other types sends and can be configured to adopt above-mentioned other multi-access modes.
In addition, information for the down link of each territory and combination fields sends, for the old system of compatibility, configuration module 120 can send the information of the down link of every kind of territory or combination fields all that preferred disposition is the form of OFDMA, can certainly be configured to above-mentioned other multi-access modes.
Sending module 122 is connected to configuration module 120, is used for according to configuration module 120 multi-access mode of its configuration being carried out the transmission of up-link information and/or the transmission of downlink information on each territory and each combination fields.
In sum, by means of technical scheme of the present invention, be configured by access mode space-time frequency code domain, the access mode that has solved existing space-time frequency code domain can not well be suitable for the problem of the demand of new system, a kind of simple access mode is provided, guaranteed link performance, improved the throughput of whole net, and realized compatibility existing system.
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 (10)
1. a space-time frequency code domain multiple access method is characterized in that, comprising:
Comprise in system under the situation in a plurality of territories that multi-access mode is disposed in the transmission of the up-link information of the combination fields of forming to each territory in described a plurality of territories and by the territory in described a plurality of territories and the transmission of downlink information respectively;
Described each territory and each combination fields are carried out the transmission of described up-link information and/or the transmission of downlink information according to the described multi-access mode to its configuration.
2. method according to claim 1 is characterized in that, described a plurality of territories comprise following one of at least: spatial domain, time-domain, frequency domain and code word territory; Described combination fields comprise following one of at least: empty time domain, empty frequency domain, idle bit territory, time-frequency domain, time-code territory, sign indicating number territory, empty time-frequency domain, empty time-code territory, empty sign indicating number frequently territory, time frequency code domain frequently.
3. method according to claim 2 is characterized in that, the multi-access mode that the up-link information of described each territory and described each combination fields is sent configuration be following one of at least:
Single-carrier frequency division multiple access is that SC-FDMA, OFDM insert OFDMA, the sub-clustering OFDM inserts is clustered SC-FDMA, N xSC-FDMA.
4. method according to claim 3 is characterized in that, for described spatial domain, after having carried out the multi-access mode configuration, described method further comprises:
On described spatial domain, the information between configuration data stream sends the multi-access mode that adopts.
5. method according to claim 3 is characterized in that, for described time-domain, after having carried out the multi-access mode configuration, described method further comprises:
On described time-domain, the information that disposes each subframe and OFDM symbol, time slot, radio frames, superframe sends the multi-access mode that adopts.
6. method according to claim 3 is characterized in that, for described frequency domain, after having carried out the multi-access mode configuration, described method further comprises:
On described frequency domain, dispose the information transmission of each transmitting terminal institute dedicated bandwidth and the information of each Resource Block and send the multi-access mode that adopts.
7. method according to claim 3 is characterized in that, for described code word territory, after having carried out the multi-access mode configuration, described method further comprises:
On described code word territory, the information that disposes the resource of each code word correspondence sends the multi-access mode that adopts.
8. method according to claim 3, it is characterized in that, comprise in described system under the situation of new system and old system, specifically being treated to of multi-access mode disposed in the transmission of the up-link information of each territory described in described a plurality of territories and described each combination fields and the transmission of downlink information respectively:
To the terminal of described old system, the information of each territory of its access and the down link of each combination fields sends the multi-access mode that is set to adopt described OFDMA, and the information of up link sends the multi-access mode that is set to adopt described SC-FDMA.
9. method according to claim 2 is characterized in that, described each territory and described each combination fields are disposed respectively after the multi-access mode, further comprises:
On described spatial domain, use the space division multiplexing mode to send corresponding data to receiving terminal;
On described time-domain, use time division multiplexing mode to send corresponding data to described receiving terminal;
On described frequency domain, use the frequency division multiplexing mode to send corresponding data to described receiving terminal;
On described code word territory, use the code division multiplexing mode to send corresponding data to described receiving terminal.
10. a space-time frequency sign indicating number territory multiple access access device is characterized in that, comprising:
Configuration module is used for comprising under the situation in a plurality of territories in system, and multi-access mode is disposed in the transmission of the up-link information of each combination fields in each territory in described a plurality of territories and the described a plurality of territory and the transmission of downlink information respectively;
Sending module is used for carrying out the transmission of described up-link information and/or the transmission of downlink information according to the described multi-access mode to its configuration on described each territory and described each combination fields.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177633A CN101741454A (en) | 2008-11-17 | 2008-11-17 | Multi-address access method and device of space-time frequency code domain |
| PCT/CN2009/074213 WO2010054568A1 (en) | 2008-11-17 | 2009-09-25 | Multiple access method and apparatus in space-time-frequency-code domain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810177633A CN101741454A (en) | 2008-11-17 | 2008-11-17 | Multi-address access method and device of space-time frequency code domain |
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| WO (1) | WO2010054568A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001904A (en) * | 2011-09-08 | 2013-03-27 | 上海中科高等研究院 | Single-carrier frequency-division multiple access link self-adaptation device and implementation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100558002C (en) * | 2006-08-17 | 2009-11-04 | 华为技术有限公司 | The method of diversity transmission signal and device thereof |
| US8259695B2 (en) * | 2007-04-30 | 2012-09-04 | Alcatel Lucent | Method and apparatus for packet wireless telecommunications |
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2008
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001904A (en) * | 2011-09-08 | 2013-03-27 | 上海中科高等研究院 | Single-carrier frequency-division multiple access link self-adaptation device and implementation method thereof |
| CN103001904B (en) * | 2011-09-08 | 2017-09-29 | 中国科学院上海高等研究院 | Single-carrier frequency division multiple access link circuit self-adapting device and its implementation |
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| WO2010054568A1 (en) | 2010-05-20 |
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