WO2010054568A1

WO2010054568A1 - Multiple access method and apparatus in space-time-frequency-code domain

Info

Publication number: WO2010054568A1
Application number: PCT/CN2009/074213
Authority: WO
Inventors: 毕峰; 苟伟; 袁明; 米德忠
Original assignee: 中兴通讯股份有限公司
Priority date: 2008-11-17
Filing date: 2009-09-25
Publication date: 2010-05-20
Also published as: CN101741454A

Abstract

The present invention discloses a multiple access method and an apparatus in space-time-frequency-code domain, wherein the method includes: in the instance that the system includes multiple domains, respectively configuring multiple access manners for the uplink information transmission and the downlink information transmission in every domain of the multiple domains and in the combining domains consisting of ones of the multiple domains; every domain and every combining domain transmitting the uplink information and/or the downlink information according to the configured multiple access manners. Said technical solution provides a simple multiple access manner, guarantees the link performance, improves the throughput of the whole network, and enables compatibility with the present system.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a space-time-frequency code domain multiple access method and apparatus. BACKGROUND OF THE INVENTION In an Orthogonal Frequency Division Multiplexing (OFDM) system, orthogonal frequency division multiplexing decomposes a data stream into a plurality of sub-data streams, each of which has a relatively low bit rate. The frequency division multiplexing modulates each sub-data stream into corresponding sub-carriers for parallel transmission, wherein each sub-carrier of OFDM is not only orthogonal to each other, but also has 1/2 overlap. In the Long Term Evolution (LTE) system, it is necessary to fully consider the Peak Average Power Ratio (PAPR) problem of the User Terminal (UT), that is, the transmitter. The instantaneous value of the output signal will fluctuate significantly, which will require some components within the system, such as power amplifiers, add/drop, A/D converters, digital/to -Analog, abbreviated as D/A) converters have a large linear dynamic range, and the nonlinearity of these components can also cause nonlinear distortion of signals with large dynamic range, and the generated harmonics will cause subchannels. The mutual interference ^ thus affects the performance of the OFDM system. In the LTE system, due to the problem of PAPR, the multiple access method for transmitting uplink information adopts SC-FDMA, because the information symbol of the single carrier system is directly modulated into the time domain (or some simple deformation). Therefore, the PAPR is relatively low. However, in a multi-carrier system, since multiple carriers simultaneously transmit information symbols at the same time, and the information symbol forks carried by the respective carriers are independent of each other, the PAPR ratio of the multi-carrier system is determined by jt匕. The PAPR of a single-carrier system is 2 - 3dB larger, and the high PAPR increases the linearity of the power amplifier. This is very unfavorable for the UT. Therefore, the best choice for uplink multiple access is a single-carrier system with a cyclic prefix, ie, SC-FDMA. . At present, research on multiple access based on OFDM system is a hot spot, but for multiple access methods in space-time-frequency code domain, especially for systems using more than one multiple access method. ^ 艮研究 less research, taking the LTE system as an example, its downlink uses OFDMA, uplink uses SC-FDMA, There is only one multiple access method for uplink and downlink, but this solution does not apply well to the requirements of the new system (for example, LTE-Advanced system and IMT-Advanced system impose high requirements on peak data rate and spectrum efficiency). Therefore, there is an urgent need for a technical solution for a multiple access method in the space-time-frequency code domain. SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the existing space time code J or the multiple access method cannot meet the requirements of a new system, and the main object of the present invention is to provide a space time. The frequency code domain ^ multiple access method and apparatus solve the above problems in the related art. According to an aspect of the present invention, a space time-frequency code domain multiple access method is provided. The space-time-frequency code domain multiple access method of the present invention includes: uplinking of a combined domain composed of each domain in multiple domains and domains in multiple domains in the case where the system includes multiple domains The transmission of the road information and the transmission of the downlink information are respectively configured in a multiple access mode; each domain and each combined domain transmits uplink information and/or downlink information according to a multiple access manner configured thereto. The multiple domains include: a spatial domain, a time domain, a frequency domain, and a codeword domain; the combined domain includes at least one of the following: space-time, space-frequency or null code, or time-frequency i or time code i or , frequency code i or, space time frequency i or space time code i or, space frequency code i or, 0 † frequency code i or. The multiple access mode configured for uplink information transmission of each domain and each combination domain is at least one of the following: single carrier frequency division multiple access (SC-FDMA, orthogonal frequency division multiple access access OFDMA, minute) Orthogonal frequency division multiple access is clustered SC-FDMA, N x SC-FDMA (N SC-FDMA). In addition, for the spatial domain, after performing the multiple access mode configuration, the method further includes: configuring, in the spatial domain, a multiple access mode used for information transmission between the data flows. In addition, for the time domain, after performing the multiple access mode configuration, the method further includes: configuring, on the time, the information transmission of each subframe and the orthogonal frequency division multiple access symbol, the time slot, the wireless frame, and the super frame. Multiple access method. In addition, for the frequency domain, after the multiple access mode is configured, the method further includes: configuring, in the frequency domain, information transmission of bandwidth used by each transmitting end, and multiple access mode used for transmitting information of each resource block. In addition, after performing the multiple access mode configuration on the codeword domain, the method further includes: configuring, in the codeword i or on, the multiple access mode used for information transmission of the resource corresponding to each codeword. Wherein, in the case that the system includes the new system and the old system, the specific processing of configuring the multiple-access mode for transmitting the uplink information and transmitting the downlink information for each domain and each combined domain in the multiple domains is : For the terminal of the old system, the information transmission of each domain that it accesses and the downlink of each combined domain is set to adopt the multiple access mode of OFDMA, and the information transmission of the uplink is set to adopt more SC-FDMA. Address method. In addition, after configuring the multiple access mode for each domain and each combination domain, the method further includes: transmitting, in the spatial domain, the corresponding data to the receiving end by using space division multiplexing; and using the time division multiplexing mode in the time domain. Sending corresponding data to the receiving end; in the frequency domain, transmitting corresponding data to the receiving end by using frequency division multiplexing; and transmitting corresponding data to the receiving end by using code division multiplexing in the codeword domain. According to an aspect of the present invention, a space time-frequency code domain multiple access apparatus is provided. The space-time-frequency code domain multiple access device according to the present invention includes: a configuration module, configured to: for each domain in a plurality of domains and each combination of multiple domains in a case where the system includes multiple domains The transmission of the uplink information of the domain and the transmission of the downlink information are respectively configured in a multiple access manner; the sending module is configured to perform uplink information on each domain and each combined domain according to the multiple access manner configured thereto Transmission and/or transmission of downlink information. By means of the technical solution of the present invention, the multiple access mode of the space-time-frequency code domain is configured to solve the problem that the existing multi-access mode of the space-time-frequency code domain cannot be applied to the new system. The problem provides a simple multiple access method, which ensures link performance, improves the throughput of the entire network, and achieves compatibility with existing systems. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawing: 1 is a flowchart of a space-time-frequency code domain multiple access method according to an embodiment of the present invention; FIG. 2 is an uplink space of Example 1 of a space-time-frequency code domain multiple access method according to an embodiment of the present invention; FIG. 3 is a schematic diagram of uplink time division multiplexing multiple access according to Example 2 of the space-time-frequency code domain multiple access method according to the embodiment of the present invention; FIG. 4 is an empty diagram according to an embodiment of the present invention. The uplink frequency division multiplexing multiple access scheme of the example 3 of the time-frequency code domain multiple access method; FIG. 5 is the uplink code division multiplexing of the example 4 of the space-time-frequency code domain multiple access method according to the embodiment of the present invention; FIG. 6 is a schematic diagram of uplink space frequency division multiplexing multiple access according to Example 4 of the space-time-frequency code domain multiple access method according to the embodiment of the present invention; FIG. 7 is a space time according to an embodiment of the present invention; Schematic diagram of downlink space-time-frequency code division multiplexing multiple access method of frequency code domain multiple access method; FIG. 8 is a structure of an SC-FDMA transmitter according to a space-time-frequency code domain multiple access method according to an embodiment of the present invention; FIG. 9 is a schematic structural diagram of an OFDMA transmitter in a space-time-frequency code domain multiple access method according to an embodiment of the present invention; 10 is a schematic structural diagram of a clustered SC-FDMA transmitter in a space-time-frequency code domain multiple access method according to an embodiment of the present invention; FIG. 11 is a space-time-frequency code domain multiple access method according to an embodiment of the present invention; Schematic diagram of a Nx SC-FDMA transmitter; Figure 12 is a block diagram of a space-time-frequency code domain multiple access apparatus in accordance with an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION Function Overview In the related art, there is a problem that the existing space-time code domain multiple access method cannot meet the requirements of a new system, and different systems have different requirements, different terminals. Having different capabilities, in a plurality of i or systems, since the components in the high-end UT have a large dynamic range of 4 inches, such terminals generally do not consider the PAPR problem, and the embodiment of the present invention obtains a better chain. The performance of the path, the throughput of the entire network, and the coverage are defined. In the uplink, the information transmission of each domain may be Single Carrier-Frequency Division Multiple Access (SC-FDMA), orthonormal. Orthogonal Frequency Division Multiple Access (OFDMA), Clustered Single Carrier-Frequency Division Multiple Access (Clustered SC-FDMA) and N x SC-FDMA (N SC-FDMA) combined multiple access method. In the case of the downlink, the information transmission of each of the i or the information is preferably in the form of an OFDMA. The preferred embodiments of the present invention are described with reference to the accompanying drawings, and the preferred embodiments of the present invention are intended to illustrate and explain the invention. Method Embodiments According to an embodiment of the present invention, a space-time-frequency code domain multiple access method is provided, and FIG. 1 is a flowchart of a space-time-frequency code domain multiple access method according to an embodiment of the present invention. As shown in FIG. 1, the following processing is included (step S102 - step S104): Step S102, in the case where the system includes multiple domains, each domain in multiple domains and a combined domain composed of domains in multiple domains The transmission of the uplink information and the transmission of the downlink information are respectively configured in a multiple access manner; that is, the information transmission of the uplink and downlink of each domain and each combined domain may adopt different or the same multiple access manner. The multiple domains include: a spatial domain, a time domain, a frequency domain, and a codeword domain; the combined domain includes at least one of the following: an empty space i or a space frequency i or a null code i or a time frequency i or Time code i or, frequency code i or, space time frequency i or space time code i or, space frequency code i or time frequency code i or. Moreover, in step S102, the multiple access manner configured for uplink information transmission of each domain and each combined domain is at least one of the following: SC-FDMA, OFDMA, clustered SC-FDMA, N x SC-FDMA. That is to say, the spatial domain, the time domain, the frequency domain, and the codeword domain can all adopt SC-FDMA, OFDMA. The multiple access method combining clustered SC-FDMA and N x SC-FDMA can also adopt the same multiple access method. Specifically, in the spatial domain, uplink information transmission can simultaneously adopt SC-FDMA,

OFDMA, clustered SC-FDMA, and N x SC-FDMA can also use the same multiple access method, and use the space division multiplexing method to send corresponding data to the receiving end. In addition, in the spatial domain, the data stream can also be configured. The multiple access method used for information transmission, that is, the multiple access method used for information transmission of a certain data stream can be changed, and the next time can be configured in other forms. In the time domain, uplink information transmission can use SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA simultaneously, or the same multiple access method can be used, and time division multiplexing is used. The receiving end sends the corresponding data. In addition, in the time domain, each subframe can be configured and configured for multiple time lengths, including one OFDM symbol, one time slot, one subframe, and one wireless. Frame, 1 superframe, that is to say, the multiple access mode used for information transmission of each subframe and other time lengths can be changed, and the next moment can be configured in other forms. In the frequency domain, uplink information transmission can use SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA simultaneously, or the same multiple access method can be used, and frequency division multiplexing is used. The receiving end sends the corresponding data. In addition, in the frequency domain, the multiple access mode used for transmitting the information used by each transmitting end can be configured, that is, the multiple access mode used for transmitting the information used by each transmitting end can be changed. At one time, it can be configured in other forms, and other multiple access methods used for information transmission of each resource block, that is, the multiple access mode used for information transmission of each resource block can be changed, and the next time can be configured as other form. On the codeword i or above, the uplink message transmission can use SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA simultaneously, or the same multiple access method can be used, and the code division is used. The multiplexing mode sends corresponding data to the receiving end. In addition, in the codeword domain, the multiple access mode used for information transmission of resources corresponding to each codeword may be configured, that is, the multiple access mode used for information transmission of resources corresponding to each codeword may be changed, and the next moment Can be configured in other forms. Moreover, in the case where the system includes the new system and the old system, in order to be compatible with the old system, the information transmission of each domain accessed by the terminal of the old system and the downlink of each combined domain is set to adopt In the multiple access mode of OFDMA, the information transmission of the uplink is set to the multiple access mode using SC-FDMA, and the transmission of each i or the information of the uplink of other types of terminals can use the other multiple access methods described above. In addition, for the information transmission of the downlink of each domain and the combination domain, in order to be compatible with the old system, the information transmission of the downlink of each domain or combination domain is preferably in the form of OFDMA, and of course, other multiple access manners mentioned above may also be used. . Step S104: Each domain and each combined domain performs uplink information transmission and/or downlink information transmission according to a multiple access manner configured thereto. The above technical solutions will be described in detail below with reference to examples. Example 1 In the spatial domain, uplink information transmission can use SC-FDMA, OFDMA, clustered SC-FDMA and N x SC-FDMA simultaneously, or use the same multiple access method, and use space division multiplexing. The mode sends the corresponding data to the receiving end. In the following, four data streams will be taken as an example. As shown in FIG. 2, the information transmission of the first data stream S1 can be performed by SC-FDMA, and the information transmission of the second data stream S2 can be performed by OFDMA, the third data. The information sent by stream S3 can be clustered SC-FDMA, the information of the fourth stream S4 can be transmitted by NX SC-FDMA, and the multiple information of four data streams can be configured, that is, 4 data streams The multiple access method used for information transmission can be changed, and the next moment can be configured in other forms. Example 2 At time i or above, the uplink information transmission can use SC-FDMA, OFDMA, clustered SC-FDMA and N x SC-FDMA simultaneously, or the same multiple access method can be used, and the time division is used. The multiplexing mode sends corresponding data to the receiving end. The following is an example of configuring the multiple access mode in units of one subframe (may also be configured in multiple access mode for other time lengths, for example, 1 OFDM symbol, 1 slot, 1 subframe, 1 As shown in FIG. 3, the information transmission of the first subframe T1 may be SC-FDMA, and the information transmission of the second subframe T2 may be performed by OFDMA, and the information of the third subframe T3 is transmitted. The clustered SC-FDMA can be used, the information transmission of the fourth subframe T4 can be performed by N x SC-FDMA, and so on, and the multiple access manner of information transmission of each subframe can be configured, that is, the information transmission of each subframe is adopted. The multiple access method can be changed, the next moment Can be configured in other forms. Example 3 On the frequency i or above, the uplink information transmission can adopt SC-FDMA, OFDMA, clustered SC-FDMA and N x SC-FDMA simultaneously, or the same multiple access method can be used, and the frequency is used. The sub-multiplexing method sends corresponding data to the receiving end. In the following, the information about the actual bandwidth used by each transmitting end will be transmitted. As shown in FIG. 4, the information of the bandwidth used by the first transmitting end can be transmitted by SC-FDMA, and the second transmitting end can adopt OFDMA, the third. The information used for the bandwidth used by the transmitting end can be configured by clustered SC-FDMA, the fourth transmitting end can adopt N x SC-FDMA, and so on, and the multiple-access mode for transmitting the information used by each transmitting end can be configured, that is, The multiple access method used for information transmission of the bandwidth used by each transmitting end can be changed, and the next moment can be configured in other forms. In addition, for a certain transmitting end (for example, the fifth transmitting end in FIG. 4), the information transmission may be performed by SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA, or the same. Multiple access method. In the following, the information transmission of each resource block is taken as an example for description (may also be configured in multiple frequency modes in other frequency ranges, for example, two resource blocks, N resource blocks, and different frequency ranges selectable by different transmitters may be different) The information transmission of the first resource block may be SC-FDMA, the information transmission of the second resource block may be performed by OFDMA, and the information transmission of the third resource block may be performed by clustered SC-FDMA, and the information of the fourth resource block is sent. N x SC-FDMA can be used, and so on, the multiple access mode used for information transmission of each resource block can be configured, that is, the multiple access mode used for information transmission of each resource block can be changed to b, and the next time can be configured. In other forms. Example 4 In the codeword domain, uplink information transmission can use SC-FDMA, OFDMA, clustered SC-FDMA and N x SC-FDMA simultaneously, or the same multiple access method can be used, and code division is used. The corresponding data is sent to the receiving end in a manner. In the following, each codeword will be taken as an example. As shown in FIG. 5, the information transmission of the resource corresponding to the first codeword C1 may be SC-FDMA, and the information transmission of the resource corresponding to the second codeword C2 may be adopted. OFDMA, the information transmission of the resource corresponding to the third codeword C3 may be clustered SC-FDMA, and the information transmission of the resource corresponding to the fourth codeword C4 may adopt N x SC-FDMA. In the analogy of jfc, the multiple access mode of the message transmission of the resource corresponding to each codeword can be configured, that is, the multiple access mode used for information transmission of the resource corresponding to each codeword can be changed, and the next time can be configured as other form. Example 5: The information transmission in the space-time-frequency code domain can be combined with each other using SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA. As shown in FIG. 6, in the space frequency i or in the data, SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA are used at the same time. For example, in the data stream SI, the information transmission of the first resource block may adopt SC-FDMA, the information transmission of the second resource block may adopt OFDMA, and the information transmission of the third resource block may adopt clustered SC-FDMA, The information transmission of 4 resource blocks can adopt NX SC-FDMA, and the information transmission of the 5th resource block can adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously. The information transmission of the data stream S2 may all adopt OFDMA. As shown in FIG. 7, the downlink information of the airspace, the time domain, the code domain, and the frequency domain is preferably transmitted using OFDMA. In addition, in order to be compatible with the old system (for example, the LTE-A system is compatible with the LTE system), the LTE terminal operating bandwidth can be maintained in the multiple access mode of the uplink information transmission of the original system, that is, SC-FDMA is adopted. The downlink information transmission uses OFDMA. Next, the specific processing performed on the transmission information when transmitting using SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA multiple access methods will be described in detail. 8 is a schematic structural diagram of an SC-FDMA transmitter. When transmitting information using an SC-FDMA transmitter, code segmentation, channel coding, constellation modulation, DFT transform, subcarrier mapping, and IFFT are required for the transmitted information. Transform, add CP operations, and finally send the information out. 9 is a schematic structural diagram of an OFDMA transmitter. When transmitting information using an OFDMA transmitter, code segmentation, channel coding, constellation modulation, serial-to-parallel conversion, subcarrier mapping, IFFT conversion, and addition are performed on the transmitted information. The operation of the CP is finally transmitted. 10 is a schematic structural diagram of a clustered SC-FDMA transmitter. When transmitting information using a clustered SC-FDMA transmitter, code segmentation, channel coding, constellation modulation, DFT transform, and subcarriers are required for information to be transmitted. Mapping, clustering, IFFT transformation, adding CP operations, and finally transmitting the information. Figure 11 is a schematic diagram of the structure of an N x SC-FDMA transmitter using N x SC-FDMA When the transmitter transmits information, it needs to perform code block segmentation, channel coding, constellation modulation, DFT transform, subcarrier mapping, IFFT transform on the transmitted information, and then add the force to the operation of the CP after the operation, and finally the information Launched. As described above, when transmitting uplink information, the transmitter transmits information according to the specific application domain using the same or different multiple access methods. If the domain information is transmitted using SC-FDMA, the receiving end follows The inverse process of SC-FDMA performs demodulation processing; if the domain information is transmitted using OFDMA, the receiving end performs demodulation processing according to the inverse process of OFDMA; if the domain information is transmitted using clustered SC-FDMA, the receiving end Demodulation processing according to the reverse process of clustered SC-FDMA; if the information transmission of the domain is N x SC-FDMA, the receiving end performs demodulation processing according to the inverse process of NX SC-FDMA; With SC-FDMA, OFDMA, clustered SC-FDMA and N x SC-FDMA, the receiving end performs demodulation processing according to the inverse process of each multiple access mode. Preferably, in the downlink, the information transmission of each domain is in the form of OFDMA, and the receiving end performs demodulation processing according to the inverse process of OFDMA. Through the above processing, the problem that the existing space-time code domain multiple access mode cannot be applied to the new system is solved, the link performance is ensured, the throughput of the whole network is improved, and the implementation is solved. Compatible with existing systems. According to an embodiment of the present invention, there is also provided a computer readable medium having stored thereon computer executable instructions for causing a computer or processor to perform, for example, when executed by a computer or processor The processing of step S102 and step S104 shown in Fig. 1, preferably, one or more of the above examples may be performed. Apparatus Embodiments According to an embodiment of the present invention, a space-time-frequency code domain multiple access apparatus is provided, and FIG. 12 is a block diagram of a space-time-frequency code domain multiple access apparatus according to an embodiment of the present invention. As shown in FIG. 12, the device includes a configuration module 120 and a sending module 122. The components of the above device will be described in detail below. The configuration module 120 is configured to separately configure uplink information transmission and downlink information transmission for each of the multiple domains in each domain and each of the multiple domains in the case where the system includes multiple domains. Multiple access method. The multiple domains include: a spatial domain, a time domain, a frequency domain, and a codeword domain; the combined domain includes at least one of the following: space time or space frequency or space code i or time frequency i or time code 3 Or, frequency code 3 or, space time frequency i or space time code i or, space frequency code i or time frequency code i or. Moreover, the multiple access mode configured by the configuration module 120 for the uplink information transmission of each domain and each combined domain is at least one of the following: SC-FDMA, OFDMA, clustered SC-FDMA, N x SC-FDMA. That is, the configuration module 120 can configure the spatial domain, the time domain, the frequency domain, and the codeword domain to adopt a multiple access method combining SC-FDMA, OFDMA, clustered SC-FDMA, and Nx SC-FDMA. Can be configured to use the same multiple access method. Specifically, in the spatial domain, the configuration module 120 may configure uplink information transmission to adopt SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA, or may be configured to use the same multiple access. And transmitting the corresponding data to the receiving end by using the space division multiplexing mode. In addition, in the spatial domain, the configuration module 120 can also configure the multiple access mode used for information transmission between the data streams, that is, the information of a certain data stream. The multiple access method used for transmission can be changed, and the next moment can be configured in other forms. In the time domain, the configuration module 120 can configure the uplink information transmission to adopt SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA, or can be configured to adopt the same multiple access method, and The time-division multiplexing method is used to send the corresponding data to the receiving end. In the time domain, the configuration module 120 can also configure each subframe and configure multiple times for other time lengths, including one OFDM symbol. 1 time slot, 1 subframe, 1 radio frame, 1 super frame, that is to say, the multiple access mode used for transmitting each sub-frame and other time lengths can be changed, and the next time can be configured as other form. In the frequency domain, the configuration module 120 may configure the uplink information transmission to adopt the SC-FDMA, OFDMA, clustered SC-FDMA, and N x SC-FDMA modes, or may be configured to adopt the same multiple access mode. And transmitting the corresponding data to the receiving end by using the frequency division multiplexing mode. In addition, at the frequency i or above, the configuration module 120 can also configure the information transmission of the bandwidth used by each transmitting end, that is, the information used for the bandwidth used by each transmitting end is sent more. The address mode can be changed. The next time can be configured in other forms, and other multiple access modes used for information transmission of each resource block, that is, the multiple access mode used for information transmission of each resource block can be changed. The next moment can be configured in other forms. On the codeword domain, the configuration module 120 can configure the uplink information transmission to adopt SC-FDMA and OFDMA and clustered SC-FDMA and N x SC-FDMA simultaneously, or can be configured to adopt the same multiple access method. And use the code division multiplexing method to send corresponding data to the receiving end. At the code word i or above, the configuration module 120 may further configure a multiple access mode for transmitting information of resources corresponding to each codeword, that is, a multiple access method for transmitting information of resources corresponding to each codeword is It can be changed, and the next moment can be configured in other forms. And, in the case that the system includes a new system and an old system, in order to be compatible with the old system, for the terminal of the old system, the configuration module 120 can set the information of each domain that it accesses and the downlink of each combined domain. In the multiple access mode of the OFDMA, the information transmission of the uplink is set to the multiple access mode using the SC-FDMA, and the information transmission of the uplink domains of other types of terminals can be configured to adopt the other multiple access modes described above. In addition, for the information transmission of the downlink of each i or the combined domain, in order to be compatible with the old system, the configuration module 120 may preferably configure the downlink information transmission of each domain or combination domain to be in the form of OFDMA, of course Can be configured as the other multiple access methods described above. The sending module 122 is connected to the configuration module 120, and configured to perform uplink information transmission and/or downlink information on each i or each combined domain according to a multiple access manner configured by the configuration module 120. Send. In summary, by means of the technical solution of the present invention, by configuring the multiple access mode of the space-time-frequency code domain, the existing multi-access mode of the space-time-frequency code domain is not well applied. The problem of the demand of the new system provides a single-access multiple access mode, which ensures link performance, improves the throughput of the entire network, and achieves compatibility with existing systems. In addition, the implementation of the present invention does not tamper with the system architecture and the current processing flow, is easy to implement, facilitates promotion in the technical field, and has strong industrial applicability. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any alterations, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

The invention relates to a space-time-frequency code domain multiple access method, which is characterized in that it comprises:

In the case where the system includes a plurality of domains, transmission of uplink information and transmission of downlink information of each domain in the plurality of domains and a combined domain composed of domains in the plurality of domains are respectively configured Multiple access method;

Each of the domains and each of the combined domains performs transmission of the uplink information and/or transmission of downlink information according to the multiple access mode configured thereto. The method according to claim 1, wherein the plurality of domains comprise at least one of: a spatial domain, a time domain, a frequency domain, and a codeword domain; and the combined domain includes at least the following

—: space time i or, space frequency i or, space code i or time frequency i or, time code i or, frequency code i or, space time frequency i or space time code i or, space frequency code i or, Time-frequency code i or. The method according to claim 2, wherein the multiple access manner configured for the uplink information transmission of each of the domains and each of the combined domains is at least one of the following:

Single carrier frequency division multiple access (SC-FDMA), orthogonal frequency division multiple access (OFDM), clustered orthogonal frequency division multiple access (CFD), clustered SC-FDMA, Nx SC-FDMA. The method according to claim 3, wherein, after the performing the multiple access mode configuration, the method further comprises:

In the spatial domain, a multiple access mode is adopted for transmitting information between data streams. The method according to claim 3, wherein, after the performing the multiple access mode configuration, the method further includes:

In the time domain, a multiple access mode for transmitting information of each subframe and orthogonal frequency division multiple access symbols, time slots, radio frames, and superframes is configured. The method according to claim 3, wherein, after the performing the multiple access mode configuration, the method further includes:

In the frequency domain, the information transmission of the bandwidth used by each transmitting end and the multiple access mode adopted for the information transmission of each resource block are configured.

The method according to claim 3, wherein, after performing the multiple access mode configuration on the codeword domain, the method further includes:

On the codeword field, a multiple access mode is adopted for transmitting information of resources corresponding to each codeword.

8. The method according to claim 3, wherein, in the case that the system includes a new system and an old system, uplinking for each of the plurality of domains and each of the combined domains The specific processing of configuring the transmission of the link information and the transmission of the downlink information by the multiple access method is as follows: sending, to the terminal of the old system, the information of each domain accessed by the terminal and the downlink of each combined domain It is set to adopt the multiple access mode of the OFDMA, and the information transmission of the uplink is set to adopt the multiple access mode of the SC-FDMA.

The method according to claim 2, further comprising: after configuring the multiple access mode for each of the domains and each of the combinations or separately, further comprising:

Transmitting corresponding data to the receiving end by using a space division multiplexing manner on the spatial domain; and transmitting corresponding data to the receiving end by using a time division multiplexing manner at the time i or

Transmitting corresponding data to the receiving end by using frequency division multiplexing on the frequency i or

On the codeword field, corresponding data is transmitted to the receiving end using a code division multiplexing manner.

A time-space frequency code domain multiple access device, comprising:

a configuration module, configured to: send, and downlink information of uplink information of each of the multiple domains and each combination domain of the multiple domains in a case where the system includes multiple domains Send separate configuration multiple access methods;

And a sending module, configured to perform transmission of the uplink information and/or transmission of downlink information on each of the domains and each of the combined domains according to the multiple access manner configured thereto.