WO2016119424A1

WO2016119424A1 - Signalling transmission method and apparatus

Info

Publication number: WO2016119424A1
Application number: PCT/CN2015/085796
Authority: WO
Inventors: 肖华华; 李儒岳; 徐俊; 鲁照华
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-01-30
Filing date: 2015-07-31
Publication date: 2016-08-04
Also published as: CN105991217A; CN105991217B

Abstract

Provided are a signalling transmission method and apparatus. The method comprises: sending channel metrics among K second-type nodes in virtual second-type nodes to first-type nodes, wherein K is a positive integer, and the channel metrics are used for characterizing the channel conditions among the K second-type nodes. By means of the technical solution provided by the present invention, the problem of a data transmission solution in the related art that second-type nodes are paired to form Mu-MIMO in the second-type nodes without virtualization or second-type nodes in other clusters is solved, and then a solution that a plurality of second-type nodes send channel metrics among nodes to first-type nodes is provided, thus enlarging the application range of MIMO technology.

Description

Signaling transmission method and device

Technical field

The present invention relates to the field of communications, and in particular to a signaling transmission method and apparatus.

Background technique

In the wireless communication technology, when a first type of node, for example, an evolved base station (eNB, eNode B) uses multiple antennas to transmit data, spatial multiplexing may be adopted to increase the data transmission rate, that is, the same type of node is used. The time-frequency resources transmit different data at different antenna positions, and the second type of nodes, such as User Equipment (UE, User Equipment) also use multiple antennas to receive data. In the case of a single user, resources of all antennas are allocated to the same user. The user occupies the physical resources allocated to the base station side in a single transmission interval. This transmission mode is called single-user multiple input and multiple output (SU- MIMO (Single User Multiple-Input Multiple-Out-put); allocates spatial resources of different antennas to different users in the case of multiple users, and one user and at least one other user share physical resources allocated by the base station side in one transmission interval. The sharing mode may be a space division multiple access mode or a space division multiplexing mode. The transmission mode is called Multiple User Multiple-Input Multiple-Out-put (MU-MIMO), where the base station side The allocated physical resources refer to time-frequency resources, as shown in Figure 1.

In the Long Term Evolution (LTE), the information reflecting the status of the downlink physical channel (CSI, Channel State Information) has three forms: Channel Quality Indication (CQI), Precoding Matrix Indicator (PMI, Pre). -coding Matrix Indicator), Rank Indicator (RI, Rank Indicator).

CQI is an indicator to measure the quality of downlink channels. In the prior art, CQI is represented by an integer value of 0-15, which respectively represents different CQI levels, and different CQIs correspond to respective modulation modes and coding rate, that is, Modulation and Coding Scheme (abbreviation MCS), divided into 16 cases, can be represented by 4-bit information.

The PMI refers to a physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) that is sent to the UE according to the measured channel quality, according to the measured channel quality, according to the measured channel quality. The channel is precoded. The feedback granularity of the PMI may be that the entire bandwidth is fed back to a PMI, or the PMI may be fed back according to a subband.

The RI is used to describe the number of spatially independent channels, corresponding to the rank of the channel response matrix. In the open-loop spatial multiplexing and closed-loop spatial multiplexing mode, the UE needs to feed back RI information, and other modes do not need to feed back RI information. The rank of the channel matrix corresponds to the number of layers. Therefore, the UE feeds back the RI information to the base station, that is, the number of layers of the downlink transmission is fed back.

The transport layer is a concept of multiple antenna "layers" in LTE and LTE-A, indicating the number of effective independent channels in spatial multiplexing. The total number of transport layers is the rank of the spatial channel (Rank). In SU-MIMO mode, all antenna resources are allocated to the same user, and the number of layers used to transmit MIMO data is equal to the rank used by the eNB to transmit MIMO data; in MU-MIMO mode, the number of layers used for one user transmission Less than the total number of layers of eNB data transmitted by the eNB, such as In order to perform SU-MIMO mode and MU-MIMO handover, the eNB needs to notify the UE of different control data in different transmission modes.

Device-to-device (D2D) communication is a technology for direct communication between terminals. Its main feature is that a device that is under network coverage and located at a close distance can find other devices wirelessly. And realize direct connection and communication between devices. D2D communication shares resources with cell users under the control of the cell network, so the spectrum utilization rate will be improved. In addition, it offers benefits such as reducing the burden on cellular networks, reducing battery power consumption in mobile terminals, increasing bit rates, increasing the robustness of network infrastructure failures, and supporting new small-scale peer-to-peer data services. .

In an actual communication system, a first type of node, such as a base station side, may employ multiple transmit and receive antennas, while in a second type of node, such as the user side, due to limitations of volume, cost, etc., in the second type of node The number of antennas configured is generally not much, and the advantages of MIMO technology cannot be fully utilized.

A currently proposed method for uplink virtual MIMO is to jointly combine multiple second-type nodes to form a virtual MIMO channel in the same time-frequency resource, and jointly transmit data to a base station having multiple antennas. When the distance between the second type of nodes is sufficiently large, the channels of different second type nodes reaching the first type of nodes can be considered irrelevant, thus overcoming the volume and cost factors.

Virtual MIMO is divided into two types: cooperative virtual MIMO and non-cooperative virtual MIMO. The main idea of cooperative virtual MIMO is that the data between the second type of nodes can share with each other and form a virtual multi-antenna system by sharing the respective antennas. The existing uplink cooperative virtual MIMO technology mainly realizes the diversity function of MIMO; non-collaboration Virtual MIMO means that the data between the second type of nodes cannot be shared with each other, but each sends an independent data stream to the first type of node, and the first type of node selects several second type nodes according to the channel condition of the second type of node. Pairing, the paired second-class nodes send data to the base station on the same time-frequency. The first-type nodes distinguish different second-type nodes by multiple antennas, which is similar to the downlink MU-MIMO, non-cooperative virtual MIMO mainly implements the multiplexing function of MIMO.

At present, virtual MIMO technology is generally recommended to be applied to the uplink of the second type of node to send data to the first type of node, and the non-cooperative mode is adopted.

As shown in FIG. 2, the downlink virtual MIMO can share the receiving antennas of the plurality of second type nodes to form a virtual second type node, which is the same as the SU-MIMO receiver because of the low inter-layer interference. MU-MIMO can achieve better link performance and greater downlink throughput, which is of great benefit to improve the communication status of the hotspots in the second type of nodes. However, downlink virtual MIMO is essentially a cooperative virtual MIMO. The second type of nodes need to share the information received from the first type of nodes and perform joint demodulation and decoding. This data sharing is typically done over a wireless link such as D2D. Therefore, there are certain restrictions on the second type of nodes for performing virtual MIMO, for example, geographical distances are relatively close, usually they are in the same cluster, where clusters refer to second-class nodes that are geographically close. A set, wherein one of the second type of nodes can share channel information and/or receive data with at least one other of the second type of nodes. If the number of second type nodes in a cluster is small or the channel between them is relatively related, or the paired second type nodes have poor channel conditions, even if they are virtualized MIMO pairing forms a virtual second-class node, and its performance improvement may not be obvious. Since Mu-MIMO does not require interaction data between the second type of nodes, a second type of node can be selected in different clusters for pairing to perform Mu-MIMO. Its performance may be better than virtual MIMO that is only paired in the same cluster.

For the related art, in the second type of nodes of the virtual second type node or other clusters, the second type of nodes are paired to form a Mu-MIMO data transmission scheme, and an effective solution has not been proposed.

Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a signaling transmission method and apparatus.

According to an embodiment of the present invention, a signaling transmission method is provided, which is applied to a MIMO system, including: transmitting a channel metric between K second-type nodes in a virtual second-type node to a first-type node, where , K is a positive integer, and the channel metric is used to characterize the channel condition between the K second type nodes.

In the embodiment of the present invention, the channel metric includes at least one of: a load level of the interaction information between the K second type nodes, and first channel status information between the K second type nodes.

In the embodiment of the present invention, the first channel state information is determined by the following formula: CI=f(CI _i,j ), where CI is the first channel state information, CI _i,j is the virtual first Channel state information of a second type of node indexed as I _{i to} a second type of node indexed as I _j , f is a predetermined function specified in advance, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠i.

In the embodiment of the present invention, the first channel state information is determined by: feeding back CI _i,j to the first class by using a second type node of the K second type nodes with an index I _i a node, wherein the CI _{i,j is} used by the first type of node to determine the first channel state information according to CI=f(CI _i,j ); or indexed by the K second type of nodes The second type of node of I _i feeds back CI _ij to the synthesis node, wherein the CI _{ij is} used by the synthesis node to determine the first channel state information according to CI=f(CI _ij ), the integrated node will The first channel state information is fed back to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, a second type of node other than the virtual second type node, A second type of node selected among the K second type nodes, a centralized processing device not connected to the MIMO system.

In the embodiment of the present invention, the first channel state information is determined by the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is a second type of node with index I _i The channel state information, j=1, . . . , K, CI _{i, j} is the channel state information of the second type node of the K second type nodes with the index I _j to the index of the second type node of the I _i , j=1,...,K and j≠i.

In the embodiment of the present invention, the first channel state information is determined by: feeding back CI _i to the first type node by using a second type of node indexed as I _i in the K second type nodes, Wherein the CI _{i is} used by the first type of node to determine the first channel state information according to CI=f(CI _i ); or by the second class of the K second type of nodes indexed as I _i The node feeds CI _i to the synthesis node, wherein the CI _{i is} used by the synthesis node to determine the first channel state information according to CI=f(CI _i ), and the integrated node uses the first channel state information Feedback to the first type of node, the integrated node includes at least one of the following: in the MIMO system, other second type nodes other than the virtual second type node, from the K second type nodes A second type of node selected in the middle, a centralized processing device not connected to the MIMO system.

In an embodiment of the present invention, the specified function comprises at least one f: the CI _{i, j,} and / or averaging CI _i; selecting the maximum value of the CI _{i, j,} and / or CI _i; A minimum is found for the CI _i,j and/or CI _i .

In the embodiment of the present invention, the CI _i,j includes at least one of the following information: first signal to noise ratio information, first capacity information, first throughput information, and first reception delay information.

In the embodiment of the present invention, the first signal to noise ratio information includes: a signal drying ratio corresponding to a channel of a second type node with an index of I _{i to} a node of a second type index of I _j , and a signal noise corresponding to the channel a ratio of a carrier-to-dry ratio corresponding to the channel; the first capacity information includes: a channel capacity corresponding to a channel of the second type node with an index I _{i to} a node of the second type index of the I _j ; the first throughput information includes: a second class node indexes I _i I _j index to a certain channel of the second node type corresponding to the channel; the first reception delay information comprises: transmitting index information of the second class node I _i The time interval to the second class node indexed as I _j .

In the embodiment of the present invention, the method further includes: feeding back, to the first type of node, second channel state information of the virtual second type node to the first type of node, where the second channel state information is Forming channel state information corresponding to the overall channel H obtained by combining all channel combinations of the K nodes of the virtual node to the first class node, where H is a K·Nr row, a complex matrix of M·Nt columns, Nr is the number of antennas of one of the second type of nodes, Nt is the number of antennas of one of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.

In the embodiment of the present invention, the second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to the second channel state information, Being said K The influence of the interaction information between the two types of nodes determines whether the second channel state information is in an ideal state.

In the embodiment of the present invention, the second channel state information in the ideal state includes at least one of: second signal to noise ratio information in the ideal state, second capacity information in the ideal state, Second throughput information in the ideal state, second reception delay information in the ideal state; the second channel state information in the non-ideal state includes at least one of: in a non-ideal state The second signal to noise ratio information, the second capacity information in a non-ideal state, and the second throughput information in a non-ideal state.

According to another embodiment of the present invention, there is also provided a signaling transmission method, applicable to a MIMO system, comprising: receiving a channel metric between K second-type nodes in a virtual second-type node, where K is positive An integer, the channel metric is used to characterize a channel condition between the K second type of nodes.

In the embodiment of the present invention, the first channel state information is determined by the following formula: CI=f(CI _i,j ), where CI is the first channel state information, CI _i,j is the virtual first two types of node indexes to the index of the second class node I _i I _j for the second class node channel state information, f is a predetermined function specified, 1≤i≤K, 1≤j≤K, j ≠ i.

In the embodiment of the present invention, the first channel state information is determined by: receiving CI _i,j fed back by a second type of node indexed as I _i in the K second type nodes, and according to CI _{i, j} and CI=f(CI _ij ) determining the first channel state information; or

Cis _{, j is} fed back to the synthesis node by the second type of nodes in the K second type nodes indexed as I _i , wherein the synthesis node includes at least one of the following: in the MIMO system, the virtual a second type of node other than the second type of node, a second type of node selected from the K second type of nodes, a centralized processing device not connected to the MIMO system; receiving the integrated node according to CI= f(CI _ij ) determines the first channel state information.

In the embodiment of the present invention, the first channel state information is determined by the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is a second type of node with index I _i The channel state information, j=1, . . . , K, CI _{i, j} is the channel state information of the second type of node indexed as I _j in the K second type nodes to the second type node of the index I _i , j=1,...,K and j≠i.

In an embodiment of the present invention, a manner determined by said first channel state information: receiving the K second-node of the second kind index feedback node I _i CI _i, and according CI _i CI = f(CI _i ) determines the first channel state information; or feeds CI _i to the synthesis node through a second type of node of the K second type nodes indexed as I _i , wherein the integrated node includes the following At least one of the second type of nodes other than the virtual second type node in the MIMO system, the second type of node selected from the K second type of nodes, not connected to the MIMO system a centralized processing device; receiving the first channel state information determined by the integrated node according to CI=f(CI _i ).

In the embodiment of the present invention, the method further includes: receiving, by the virtual second type node, the second channel state information of the virtual second type node to the first type of node, where the second channel state The information is channel state information corresponding to the overall channel H constituting all the channel combinations of the K nodes of the virtual node to the first class node, where H is a K·Nr row and a complex number of M·Nt columns a matrix, Nr is the number of antennas of one of the second type of nodes, Nt is the number of antennas of one of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.

In the embodiment of the present invention, the second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to the second channel state information, The second channel state information is determined to be in an ideal state by the influence of the interaction information between the K second type nodes.

In the embodiment of the present invention, the second channel state information in the ideal state includes at least one of the following: a second signal to noise ratio information in the ideal state, a second capacity information in an ideal state, and an ideal state. Second throughput information, second reception delay information in an ideal state; the second channel state information in the non-ideal state includes at least one of: second signal to noise ratio information in the non-ideal state, The second capacity information in the non-ideal state and the second throughput information in the non-ideal state.

In the embodiment of the present invention, the method further includes: acquiring the first channel state information and the second channel state information; determining third channel state information according to the first channel state information and the second channel state information, where The third channel state information is channel state information of the virtual second type node to the first type of node; and the currently used MIMO mode and MIMO configuration information are determined according to the third state information.

In the embodiment of the present invention, determining the third channel state information according to the first channel state information and the second channel state information includes: when the second channel state information is the second channel state information in the non-ideal state, The second channel state information in the non-ideal state is used as the third channel state information.

In the embodiment of the present invention, when the second channel state information is the second channel state information in the ideal state, determining the third channel state information according to the first channel state information and the second channel state information, including: Determining, by the first channel state information, a delay amount between the virtual second type nodes; determining, according to the second channel state information, a transmission time between the virtual second type node and the first type of node; The delay amount, the transmission time, and the second channel state information determine the third channel state information.

In the embodiment of the present invention, determining, according to the first channel state information, a delay amount between the virtual second type of nodes, including: when the first channel state information indicates a first delay amount, a delay amount as a delay amount between the virtual second type nodes; when the first channel state information indicates a first throughput, a quotient of a data packet size and the first channel state information is used as the virtual a delay amount between the second type of nodes, wherein the data packet size is a size of a predefined data packet of the first type of node and the second type of node; and when the first channel state information indicates the first The capacity is obtained by dividing the data packet size by the bandwidth used for transmitting the data packet, and dividing the quotient by the first channel state information to obtain a delay amount between the virtual second type nodes; When the first channel state information is indicated as the first signal to noise ratio, the data packet size is divided by the bandwidth used for transmitting the data packet, and the quotient is divided by the capacity corresponding to the first channel state information. get Determining the amount of delay between the virtual second type of nodes, wherein the capacity corresponding to the first channel state information is determined by: substituting the first channel state information into a logarithm of the base 2 to obtain a function value, And determining, according to the correspondence between the first channel ratio and the capacity, a capacity corresponding to the first channel state information.

In the embodiment of the present invention, determining a transmission time between the virtual second type node and the first type of node according to the second channel state information, including: when the second channel state information indicates a second delay And the second delay amount is used as the transmission time; when the second channel state information indicates the second throughput, the quotient of the data packet size and the second channel state information is used as the transmission Time, wherein the data packet size is a size of a predefined data packet of the first type of node and the second type of node; when the second channel state information indicates a second capacity, the data is Dividing the packet size by the bandwidth used to transmit the data packet, and dividing the quotient by the second channel state information to obtain the transmission time; when the second channel state information is the second SNR, Dividing the data packet size by the bandwidth used to transmit the data packet, and dividing the quotient by the capacity corresponding to the second channel state information to obtain the transmission time, where a capacity corresponding to the second channel state information: a function value obtained by substituting the second channel state information into a logarithm of a base 2, and determining the relationship according to the correspondence between the first channel ratio and the capacity The capacity corresponding to the first channel state information.

In the embodiment of the present invention, determining, according to the delay amount, the transmission time and the second channel state information, the third channel state information, including: when the second channel state information is in an ideal state When the second delay amount is used, the third channel state information is determined according to the following formula: C=Th·T/(D+T), where C is the third channel state information, and Th is the first type of node and the a second type of node pre-defined throughput size or an average value of a specified transmission throughput, T is the transmission time, D is the delay amount; and when the second channel state information indicates a non-ideal state, the The second channel state information is determined according to the following formula: C=CSI·T/(D+T), where the CSI is the second channel state information.

In the embodiment of the present invention, the method further includes: selecting a MIMO mode corresponding to a maximum parameter value indicated by the third channel state information as a currently used MIMO mode, and using a second type of node index corresponding to the MIMO mode as The MIMO configuration information.

In the embodiment of the present invention, the method further includes: receiving load level information between the K second type nodes; determining the currently used MIMO mode and the MIMO configuration information according to the load level information.

In the embodiment of the present invention, after determining the currently used MIMO mode and the MIMO configuration information, the method further includes: transmitting data to the virtual second type node that determines to use the MIMO mode, and sending the MIMO configuration information to the The virtual second type of node.

In the embodiment of the present invention, determining the currently used MIMO mode and the MIMO configuration information according to the load level information includes: selecting a virtual second type node with the smallest load level, and at the virtual second type node with the lowest load level When the load level is less than the preset threshold, the MIMO mode corresponding to determining the minimum load level is the currently used MIMO mode, and the virtual second type node index with the lowest load level is used as the MIMO configuration information.

In the embodiment of the present invention, the MIMO transmission mode includes at least one of: a transmission mode of a single second type node, a MIMO transmission mode in which at least one second type node transmits at the same time, and the second type of node does not share the received data. At least one second type of node transmits at the same time and the second type of node shares the MIMO transmission mode of the received data.

In the embodiment of the present invention, the first type of node includes at least one of the following: a macro base station, a micro base station, and a wireless access point device, where the second type of node includes at least one of the following: a terminal, a relay device, and a pull Far device, wireless access point device.

According to another embodiment of the present invention, there is further provided a signaling transmission apparatus, applicable to a MIMO system, comprising: a sending module, configured to send a channel metric between K second type nodes in a virtual second type node To a first type of node, where K is a positive integer, the channel metric is used to characterize channel conditions between the K second type of nodes.

In the embodiment of the present invention, the channel metric sent by the sending module includes at least one of the following: a load level of the interaction information between the K second type nodes, and a number between the K second type nodes One channel status information.

In an embodiment of the present invention, the apparatus further includes: a determining module, configured to determine the first channel state information by using: CI=f(CI _i,j ), wherein the CI is the first channel state The information, CI _{i, j} is the channel state information of the second type of node indexed I _i in the virtual second type node to the second type node of the index I _j , and f is a predetermined function specified in advance, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠ i.

In the embodiment of the present invention, the determining module is further configured to determine the first channel state information by using a second type of node indexed I _i of the K second type nodes to be CI _i,j Feedback to the first type of node, wherein the CI _{i,j is} used by the first type of node to determine the first channel state information according to CI=f(CI _ij ); or by the K second A second type of node indexed I _i in the class node feeds CI _i,j to the synthesis node, wherein the CI _{i,j is} used by the synthesis node to determine the first channel according to CI=f(CI _ij ) Status information, the synthesis node feeds back the first channel state information to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, outside the virtual second type node Another second type of node, a second type of node selected from the K second type of nodes, a centralized processing device not connected to the MIMO system.

In the embodiment of the present invention, the determining module is further configured to determine the first channel state information by using the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is an index I The channel state information of the second type of node of _i , j=1,...,K,CI _i,j is the second type of node indexed as I _j in the K second type nodes to the index I _i Channel state information for a class 2 node, j = 1, ..., K and j ≠ i.

In the embodiment of the present invention, the determining module is further configured to determine the first channel state information by: feeding back CI _i through a second type of node in the K second type nodes indexed as I _i To the first type of node, wherein the CI _{i is} used by the first type of node to determine the first channel state information according to CI=f(CI _i ); or by the K second type of nodes The second type of node indexed I _i feeds CI _i to the synthesis node, wherein the CI _{i is} used by the synthesis node to determine the first channel state information according to CI=f(CI _i ), the synthesis node And feeding back the first channel state information to the first type of node, where the integrated node includes at least one of the following: in the MIMO system, a second type of node other than the virtual second type node, a second type of node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system.

In the embodiment of the present invention, the specifying function f in the determining module includes at least one of: averaging the CI _{i, j} and/or CI _i ; and comparing the CI _{i, j} and/or CI _i finds the maximum value; the minimum value is determined for the CI _{i, j} and/or CI _i .

According to another embodiment of the present invention, there is further provided a signaling transmission apparatus, applicable to a MIMO system, comprising: a first receiving module configured to receive channel metrics between K second type of nodes in a virtual second type of node A standard, wherein K is a positive integer, and the channel metric is used to characterize a channel condition between the K second type of nodes.

In the embodiment of the present invention, the channel metric received by the first receiving module includes at least one of the following: a load level of the interaction information between the K second type nodes, and between the K second type nodes First channel status information.

In the embodiment of the present invention, the apparatus further includes: a first determining module, configured to determine the first channel state information by using: CI=f(CI _i,j ), where CI is the first The channel state information, CI _i,j is the channel state information of the second type node with the index I _i in the virtual second type node to the second type node of the index I _j , and f is a preset function, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j≠i.

In the embodiment of the present invention, the first determining module is further configured to determine the first channel state information by: using a second type node of the K second type nodes with an index I _i _{I, j is} fed back to the integrated node, wherein the integrated node includes at least one of the following: in the MIMO system, other second type nodes other than the virtual second type node, from the K second class a second type of node selected in the node, a centralized processing device not connected to the MIMO system; the first receiving module is further configured to receive the integrated node to determine the first channel according to CI=f(CI _ij ) state information; or the first receiving module is further configured to receive the second category node K index feedback for the second type of node I _i CI _{i, j,} the first determining module is further provided according CI _{i, j} and CI = f(CI _ij ) determine the first channel state information.

In the embodiment of the present invention, the first determining module is further configured to determine the first channel state information by using the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is The channel state information of the second type of node indexed as I _i , j=1,...,K,CI _i,j is the second type of node indexed as I _j in the K second type nodes to index I _i channel state information of the second type of node, j = 1, ..., K and j ≠ i.

In the embodiment of the present invention, the first determining module is further configured to determine the first channel state information by: using a second type node of the K second type nodes with an index I _i _{i is} fed back to the integrated node, wherein the integrated node includes at least one of the following: in the MIMO system, other second type nodes other than the virtual second type node, from the K second type nodes a second type of node selected, a centralized processing device not connected to the MIMO system; the first receiving module is further configured to receive the first channel state determined by the integrated node according to CI=f(CI _i ) information; or the first receiving module is further configured to receive the second category node K index of the second kind feedback node I _i CI _i, the first determining module is further provided according to _I and CI CI =f(CI _i ) determines the first channel state information.

In the embodiment of the present invention, the specified function f applied in the first determining module includes at least one of: averaging the CI _{i, j} and/or CI _i ; for the CI _{i, j} And / or CI _i find the maximum value; find the minimum value for the CI _{i, j} and / or CI _i .

In the embodiment of the present invention, the device further includes: a second receiving module, configured to receive, by the virtual second type node, the second channel state information of the virtual second type node to the first type of node, where The second channel state information is channel state information corresponding to the overall channel H formed by combining all channel combinations of the K nodes of the virtual node to the first class node, where H is a K·Nr row. a complex matrix of M·Nt columns, Nr is the number of antennas of one of the nodes of the second type, Nt is the number of antennas of one node of the first type, and M is a number of nodes of the first type in the MIMO system number.

In the embodiment of the present invention, the second channel state information received by the second receiving module includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, where Whether the second channel state information is affected by the interaction information between the K second type nodes is determined whether the second channel state information is in an ideal state.

In the embodiment of the present invention, the second channel state information in the ideal state received by the second receiving module includes at least one of the following: a second signal to noise ratio information in the ideal state, in an ideal state The second capacity information, the second throughput information in an ideal state, the second reception delay information in an ideal state, and the second channel state information in the non-ideal state include at least one of: being in the non-ideal state The second second signal to noise ratio information, the second capacity information in the non-ideal state, and the second throughput information in the non-ideal state.

In the embodiment of the present invention, the device further includes: an acquiring module, configured to acquire the first channel state information and the second channel state information; and a second determining module, configured to be configured according to the first channel state information The second channel state information is determined by the second channel state information, wherein the third channel state information is channel state information of the virtual second type node to the first type of node; and the third determining module is configured to be based on the third state information. Determine the currently used MIMO mode and MIMO configuration information.

In the embodiment of the present invention, the second determining module is configured to: when the second channel state information is the second channel state information in the non-ideal state, the second channel state information in the non-ideal state As the third channel state information.

In the embodiment of the present invention, the second determining module is configured to: when the second channel state information is the second channel state information in the ideal state, the first determining unit is configured to be configured according to the first channel The state information determines a delay amount between the virtual second type nodes; and the second determining unit is configured to determine, according to the second channel state information, a transmission time between the virtual second type node and the first type of node; And a third determining unit, configured to determine the third channel state information according to the delay amount, the transmission time, and the second channel state information.

In the embodiment of the present invention, the device further includes: a third receiving module, configured to receive load level information between the K second type nodes; and a fourth determining module, configured to determine, according to the load level information, the currently used MIMO mode and configuration information with MIMO.

In the embodiment of the present invention, the device further includes: a transmission module, configured to transmit data to the virtual second type node that determines to use the MIMO mode; and a sending module, configured to send the MIMO configuration information to the The virtual second type of node.

In the embodiment of the present invention, the fourth determining module includes: a selecting unit, configured to select a virtual second type node with a minimum load level; and a fourth determining unit, configured to be a virtual second class with the smallest load level When the load level of the node is less than the preset threshold, the MIMO mode corresponding to determining the minimum load level is the currently used MIMO mode, and the virtual second type node index with the lowest load level is used as the MIMO configuration information.

Through the embodiment of the present invention, channel metrics between K nodes in a virtual second type node (terminal side) are adopted. The technical solution sent to the first type of node (base station side) solves the related art, in the second type of node having no virtual second type node or other cluster, and the second type of node is paired to form Mu-MIMO data transmission The problem of the solution further provides a scheme for the terminal side to transmit the channel metric between the nodes to the base station side, thereby expanding the application range of the MIMO technology.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic structural diagram of downlink transmission of a homogeneous network in the related art;

2 is a schematic diagram of a virtual MIMO formed by a plurality of second type nodes of the related art;

FIG. 3 is a flowchart of a signaling transmission method according to an embodiment of the present invention; FIG.

4 is a structural block diagram of a signaling transmission apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram showing still another structure of a signaling transmission apparatus according to an embodiment of the present invention; FIG.

FIG. 6 is still another flowchart of a signaling transmission method according to an embodiment of the present invention; FIG.

FIG. 7 is still another structural block diagram a of a signaling transmission apparatus according to an embodiment of the present invention;

FIG. 8 is still another structural block diagram b of a signaling transmission apparatus according to an embodiment of the present invention; FIG.

9 is a schematic diagram of two virtual nodes performing MU-MIMO according to a preferred embodiment of the present invention;

10 is a schematic diagram showing the relationship between channel information between nodes of a virtual second type node according to a preferred embodiment of the present invention;

11 is a schematic diagram of transmitting channel information to a node outside a virtual second type node according to a preferred embodiment of the present invention;

12 is a schematic diagram of transmitting channel information to a second type of node in a virtual second type node according to a preferred embodiment of the present invention;

13 is a schematic diagram of interaction between a virtual second type node transmitting second channel state information to a transmitting network and a transmitting network transmitting MIMO configuration information to a second type of node, and information such as pilot and data, according to a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

Other features and advantages of the invention will be set forth in the description which follows, The objects and other advantages of the present invention are achieved by the written description, the rights The requirements and structures specifically identified in the drawings are implemented and obtained.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

In order to solve the above technical problem, in the present embodiment, a signaling transmission method is provided, which is applied to a MIMO system. FIG. 3 is a flowchart of a signaling transmission method according to an embodiment of the present invention, as shown in FIG. step:

Step S302, acquiring channel metrics between K second type nodes in the virtual second type node;

Step S304, the channel metric is sent to the first type of node, where K is a positive integer, and the channel metric is used to represent the channel condition between the K second type nodes.

Through the above various steps, the technical solution of transmitting the channel metric between the K nodes in the virtual second type node (terminal side) to the first type node (base station side) is solved, and in the related art, there is no virtual second. In the second type of nodes of the class node or other clusters, the second type of nodes are paired to form a Mu-MIMO data transmission scheme, and thus a scheme for the terminal side to transmit the channel metric between the nodes to the base station side is provided. Expanded the application range of MIMO technology.

Optionally, the foregoing channel metric includes at least one of: a load level of the interaction information between the K second type nodes, and first channel state information between the K second type nodes, that is, by using the foregoing load level and the foregoing The first channel state information is used to characterize channel conditions between the K second type of nodes.

For the foregoing method for determining the first channel state information, the following examples are provided by the embodiments of the present invention, but are not used in the embodiments of the present invention.

First case

The first channel state information is determined by the following formula: CI=f(CI _i,j ), wherein the CI is the first channel state information, CI _i,j is the index of the virtual second-type node index I _i The channel state information of the second type of node to the second type of node whose index is _Ij , f is a predetermined function specified in advance, 1≤i≤K, 1≤j≤K, j≠i.

The first channel state information is determined by: feeding a CI _{i, j} to a first type of node by using a second type of node indexed as I _i in the K second type nodes, wherein the CI _{i, j is} used by Determining _, by the first type of node _{, the} first channel state information according to CI=f(CI _i,j ); or feeding back CI _ij to the synthesis node by using the second type of node indexed as I _i in the K second type of nodes, wherein The CI _{ij is} used by the integrated node to determine the first channel state information according to CI=f(CI _ij ), and the integrated node feeds back the first channel state information to the first type node, and the integrated node includes at least the following A: in the MIMO system, the second type of node other than the virtual second type node, the second type node selected from the K second type nodes, and the centralized processing device not connected to the MIMO system.

Second case

The first channel state information is determined by the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is channel state information of the second type of node with index I _i , j=1, ..., K, CI _{i, j} is the channel state information of the second type of nodes indexed I _j in the above K second type nodes to the node of the second class index I _i , j=1,..., K and j≠i.

The first channel state information is determined by: feeding back CI _i to the first type node by using a second type of node indexed I _i in the K second type nodes, where the CI _{i is} used for the foregoing The first type of node determines the first channel state information according to CI=f(CI _i ); or feeds CI _i to the synthesis node by using the second type node of the K second type nodes indexed as I _i , wherein The CI _{i is} used by the foregoing integrated node to determine the first channel state information according to CI=f(CI _i ), and the integrated node feeds back the first channel state information to the first type node, and the integrated node includes at least one of the following: In the MIMO system, the second type of node other than the virtual second type node is a second type node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system.

In an embodiment of the present invention, the specified function f comprising at least one of the following: the above-described CI _{i, j,} and / or averaging _I CI; above CI _{i, j} and / or _I CI selecting the maximum value; the above-described CI _{i, j} and / or CI _i find the minimum.

Furthermore, the above CI _i,j includes but is not limited to: first signal to noise ratio information, first capacity information, first throughput information, and first reception delay information.

In an alternative exemplary embodiment of the present invention, the first information signal to noise ratio comprises: a second class node index I _i I _j to the index channel corresponds to a second channel node type drier than the corresponding channel The signal-to-noise ratio, the load-to-dry ratio corresponding to the channel; the first capacity information includes: a channel capacity corresponding to a channel of the second type node with an index I _{i to} a node of the second type index of the I _j ; the first throughput information includes: a second class node indexes I _i I _j to the index channel a certain channel corresponding to the second type node; and the first reception delay information comprises: transmitting information to the second type of index I _i to node The index is the time interval of the second class node of I _j .

In order to improve the technical solution provided by the embodiment of the present invention, in the embodiment of the present invention, the following technical solution is further provided: feeding back the second channel state information of the virtual second type node to the first type node to the first type of node. The second channel state information is channel state information corresponding to the overall channel H formed by combining all the channel combinations of the K nodes of the virtual node to the first class node, where H is a K·Nr row. The complex matrix of the M·Nt column, Nr is the number of antennas of a second type of node, Nt is the number of antennas of the first type of nodes, and M is the number of nodes of the first type in the MIMO system.

The second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to whether the second channel state information is used by the K second type nodes The influence of the inter-exchange information determines whether the second channel state information is in an ideal state, that is, the technical solution of the embodiment of the present invention considers a situation in a non-ideal state, and the second channel state information in the ideal state includes at least the following One of: second signal-to-noise ratio information in the ideal state, second capacity information in the ideal state, second throughput information in the ideal state, and second reception delay information in the ideal state The second channel state information in the non-ideal state includes at least one of: second signal to noise ratio information in a non-ideal state, second capacity information in a non-ideal state, and second in a non-ideal state Throughput information.

In this embodiment, a signaling transmission device is also provided, which is applied to the second type of node of the MIMO system, and is used to implement the foregoing embodiments and preferred embodiments. The modules involved are explained. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. 4 is a structural block diagram of a signaling transmission apparatus according to an embodiment of the present invention. As shown in FIG. 4, the method includes:

The obtaining module 40 is configured to obtain channel metrics between the K second type nodes in the virtual second type node;

The sending module 42 is connected to the obtaining module 40 and configured to send the channel metric to the first type of node, where K is a positive integer, and the channel metric is used to represent the channel condition between the K second type nodes.

Through the comprehensive action of each of the above modules, a technical solution for transmitting channel metrics between K nodes in the virtual second type node (terminal side) to the first type of node (base station side) is adopted, and the related art has not been solved yet. In the second type of nodes of the virtual second type node or other clusters, the second type of nodes are paired to form a data transmission scheme of Mu-MIMO, and thus a terminal side transmits channel metrics between nodes to the base station side. The solution expands the range of applications of MIMO technology.

Optionally, the channel metric sent by the sending module 42 includes at least one of the following: a load level of the K second type inter-node interaction information, and a first channel state information between the K second type nodes.

In order to determine the first channel state information, as shown in FIG. 5, the signaling transmission device further includes:

The determining module 44 is connected to the sending module 42 and configured to determine the first channel state information by using the following formula: CI=f(CI _i,j ), wherein the CI is the first channel state information, CI _i,j is the above The channel state information of the second type node in the virtual second type node indexed to I _{i to} the second type node in the index I _j , where f is a predetermined function specified, 1 ≤ i ≤ K, 1 ≤ j ≤ K , j≠i, and the determining module 42 is further configured to feed the CI _i,j to the first type of node through the second type of nodes indexed as I _i in the K second type nodes, wherein the CI _{i, j is} used by the first type of node to determine the first channel state information according to CI=f(CI _ij ); or to determine the first channel state information by: indexing I _i through the K second class nodes The second type of node feeds the CI _ij to the synthesis node, wherein the CI _{ij is} used by the integrated node to determine the first channel state information according to CI=f(CI _ij ), and the integrated node feeds back the first channel state information to In the above first type node, the foregoing integrated node includes at least one of the following: In the MIMO system, the second type of node other than the virtual second type node is a second type node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system.

The determining module 44 is further configured to determine the first channel state information by CI=f(CI _i ), where CI _i =f(CI _i,j ) is the channel state of the second type of node with index I _i The information, j=1,...,K,CI _i,j is the channel state information of the second type node with the index I _j in the above K second type nodes to the node of the second type index I _i , j= 1, ..., K and j ≠ i, and the determining module 44 is further configured to feed the CI _i to the first type node by using the second type node of the K second type nodes indexed as I _i The CI _{i is} used by the first type of node to determine the first channel state information according to CI=f(CI _i ); or the first channel state information is determined by: indexing through the K second type nodes The second type of node for I _i feeds the CI _i to the synthesis node, wherein the CI _{i is} used by the integrated node to determine the first channel state information according to CI=f(CI _i ), and the integrated node uses the first channel The status information is fed back to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, the virtual A second type of node other than the second type of node, a second type node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system.

In an embodiment of the present invention, the determination module 44 in the designated function f comprising at least one of: the above-described CI _{i, j,} and / or averaging CI _i; seeking the maximum of the above-described CI _{i, j,} and / or CI _i Value; find the minimum value for CI _{i, j} and / or CI _{i above} .

In order to improve the above technical solution in various aspects, in the embodiment of the present invention, a signaling transmission method is also provided, For a MIMO system, FIG. 6 is still another flowchart of a signaling transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes:

Step S602, the first type of node receives the channel metric between the K second type nodes in the virtual second type node, where K is a positive integer, and the channel metric is used to represent the channel between the K second type nodes. Happening;

Step S604, the first type of node determines a channel condition between the K second type nodes according to the channel metric.

Through the above steps, the first type of node (base station side) is used to receive the channel metric between the K nodes in the virtual second type node (terminal side), and the related technology has no virtual second type node. Or the second type of nodes of other clusters, the second type of nodes are paired to form a data transmission scheme of Mu-MIMO, and further provides a scheme for the terminal side to transmit channel metrics between nodes to the base station side, which expands The scope of application of MIMO technology.

In the embodiment of the present invention, the channel metric includes at least one of the following: a load level of the interaction information between the K second type nodes, and first channel status information between the K second type nodes.

For the foregoing method for determining the first channel state information, the following examples are provided by the embodiments of the present invention, but are not intended to limit the embodiments of the present invention.

First case

The first channel state information is determined by the following formula: CI=f(CI _i,j ), wherein the CI is the first channel state information, CI _i,j is the index of the virtual second-type node index I _i two types of node I _j is the index of the second class node channel state information, f is a predetermined function specified, 1≤i≤K, 1≤j≤K, j ≠ i .

The first channel state information is determined by: receiving CI _i,j fed back by the second type node of the K second type nodes with the index I _i , and according to CI _i,j and CI=f (CI _Ij ) determining the first channel state information; or feeding CI _i,j to the synthesis node by using the second class node indexed I _i in the K second type nodes, wherein the integrated node comprises at least one of the following: In the MIMO system, the second type of node other than the virtual second type node, the second type node selected from the K second type nodes, and the centralized processing device not connected to the MIMO system; receiving the foregoing The node determines the first channel state information according to CI=f(CI _ij ).

Second case

The first channel state information is determined by the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is channel state information of the second type of node with index I _i , j=1, ..., K, CI _{i, j} are channel state information of the second type of nodes indexed I _j in the K second type nodes to the node of the second type index of the I _i , j=1,..., K and j≠i.

Wherein said first determining channel state information by: said K second-node of the second class node index I _i CI _i receives feedback, and determines in accordance with the above and CI _i CI = f (CI _i) The first channel state information; or the CI _{i is} fed back to the synthesis node by the second type of node indexed I _i in the K second type of nodes, wherein the integrated node includes at least one of the following: in the MIMO system, the foregoing a second type of node other than the virtual second type node, a second type node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system; receiving the integrated node according to CI=f ( CI _i ) the above first channel state information determined.

Note that the designated at least one function f comprising: the above-described CI _{i, j,} and / or averaging CI _i; above CI _{i, j,} and / or CI _i selecting the maximum value; the above-described CI _{i, j} and / or CI _i find the minimum.

In order to further improve the foregoing technical solution, the method further includes: receiving, by the virtual second type node, the second channel state information of the virtual second type node to the first type of node, wherein the second channel state information is configured to Channel state information corresponding to the overall channel H obtained by combining all the channel combinations of the K nodes of the second type node of the virtual node, wherein H is a K·Nr row, a complex matrix of M·Nt columns, and Nr is one of the above The number of antennas of the second type of node, Nt is the number of antennas of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.

Optionally, the foregoing second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to whether the second channel state information is the second The influence of the interaction information between the class nodes determines whether the second channel state information is in an ideal state, wherein the second channel state information in the ideal state includes at least one of the following: the second signal to noise ratio information in the ideal state, ideal The second capacity information in the state, the second throughput information in the ideal state, and the second reception delay information in the ideal state; the second channel state information in the non-ideal state includes at least one of the following: in the non-ideal state The second second signal to noise ratio information, the second capacity information in the non-ideal state, and the second throughput information in the non-ideal state.

In order to improve the foregoing technical solution, a technical solution is provided in the embodiment of the present invention: acquiring the first channel state information and the second channel state information, and determining the third according to the first channel state information and the second channel state information. Channel state information, wherein the third channel state information is channel state information of the virtual second type node to the first type of node; and the currently used MIMO mode and MIMO configuration information are determined according to the third state information.

In an optional implementation manner of the embodiment of the present invention, determining the third channel state information according to the first channel state information and the second channel state information may be implemented by: when the second channel state information is in a non-ideal state In the second channel state information, the second channel state information in the non-ideal state is used as the third channel state information.

Further, when the second channel state information is the second channel state information in the ideal state, determining the third channel state information according to the first channel state information and the second channel state information, including: determining, according to the first channel state information, a delay amount between the virtual second type nodes; determining, according to the second channel state information, a transmission time between the virtual second type node and the first type node; and according to the delay amount, the transmission time and the second channel status The information determines the third channel state information described above.

Optionally, determining, according to the first channel state information, the amount of delay between the virtual second type nodes may be implemented by: when the first channel state information indicates the first delay amount, using the first delay amount as a delay amount between the virtual second type nodes; when the first channel state information indicates the first throughput, the quotient of the data packet size and the first channel state information is used as the delay between the virtual second type nodes The data packet size is a size of a predefined data packet of the first type node and the second type node; when the first channel state information indicates the first capacity, dividing the data packet size by the foregoing The bandwidth used by the data packet is obtained by dividing the quotient by the first channel state information to obtain a delay amount between the virtual second type nodes; when the first channel state information indicates the first signal to noise ratio, the foregoing The packet size is divided by the bandwidth used to transmit the data packet, and the quotient is divided by the capacity corresponding to the first channel state information. a delay amount to the virtual second type of node, wherein the capacity corresponding to the first channel state information is determined by: substituting the first channel state information into a logarithm function of the base 2 to obtain a function value, according to The correspondence between the first channel ratio and the capacity determines a capacity corresponding to the first channel state information.

Further, determining, according to the second channel state information, a transmission time between the virtual second type node and the first type of node, may be implemented by: when the second channel state information indicates a second delay amount, The second delay amount is used as the transmission time; when the second channel state information is indicated as the second throughput, the quotient of the data packet size and the second channel state information is used as the transmission time, wherein the data packet size a size of a data packet predefined for the first type node and the second type node; when the second channel state information indicates the second capacity, dividing the data packet size by the bandwidth used for transmitting the data packet And dividing the quotient by the second channel state information to obtain the transmission time; when the second channel state information is the second SNR, dividing the data packet size by the bandwidth used for transmitting the data packet to obtain a quotient Dividing the quotient by the capacity corresponding to the second channel state information to obtain the foregoing transmission time, where Determining, by the following method, a capacity corresponding to the second channel state information: obtaining a function value by substituting the second channel state information into a logarithm function of the base 2, and determining the first according to the correspondence between the first channel ratio and the capacity The capacity corresponding to the channel state information; determining the third channel state information by using the transmission time and the second channel state information according to the delay amount may be implemented by: when the second channel state information indicates that the second state information is in an ideal state When the delay amount is two, the third channel state information is determined according to the following formula: C=Th·T/(D+T), where C is the third channel state information, and Th is the first type node and the second class. The pre-defined throughput size of the node or the average value of the specified transmission throughput, T is the above transmission time, D is the delay amount; and when the second channel state information indicates that the non-ideal state is the second throughput, the second capacity And the second signal to noise ratio, determining the third channel state information according to the following formula: C=CSI·T/(D+T), wherein the CSI is the second channel State information.

It should be noted that the foregoing method further includes: selecting a maximum corresponding to a parameter value indicated by the third channel state information. The MIMO mode is used as the MIMO mode currently used, and the second type of node index corresponding to the MIMO mode described above is used as the MIMO configuration information.

A further improvement of the foregoing technical solution in the embodiment of the present invention is that the method further includes: receiving load level information between the K second type of nodes; determining, according to the load level information, the currently used MIMO mode and the MIMO configuration information, and After determining the currently used MIMO mode and the MIMO configuration information, the following technical solution may also be implemented: transmitting data to the virtual second type node determined to use the MIMO mode, and transmitting the MIMO configuration information to the virtual second type node. .

In addition, determining the currently used MIMO mode and the MIMO configuration information according to the load level information may be implemented by: selecting a virtual second type node with the lowest load level, and loading the virtual second type node with the lowest load level. When the level is less than the preset threshold, the MIMO mode corresponding to determining the minimum load level is the currently used MIMO mode, and the virtual second type node index with the minimum load level is used as the MIMO configuration information.

The foregoing MIMO transmission mode includes at least one of: a transmission mode of a single second type node, a MIMO transmission mode in which at least one second type node transmits at the same time, and the second type of node does not share received data, at least one second type The nodes transmit at the same time and the second type of node shares the MIMO transmission mode of the received data.

In the foregoing technical solution provided by the embodiment of the present invention, the first type of node includes at least one of the following: a macro base station, a micro base station, and a wireless access point device, where the second type of node includes at least one of the following: a terminal, a medium The device, the remote device, and the wireless access point device, and the number of the second type of nodes may be one or more, which is not limited by the embodiment of the present invention.

In this embodiment, a signaling transmission device is also provided, which is applied to the first type of node of the MIMO system, and is used to implement the foregoing embodiments and preferred embodiments. The modules involved are explained. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated. FIG. 7 is a structural block diagram of a signaling transmission apparatus according to an embodiment of the present invention. As shown in FIG. 7, the method includes:

The first receiving module 70 is configured to receive a channel metric between the K second type nodes in the virtual second type node, where K is a positive integer, and the channel metric is used to represent the relationship between the K second type nodes Channel condition

The determining processing module 72 is configured to determine a channel condition between the K second type of nodes according to the channel metric described above.

Through the comprehensive function of each of the above modules, the first type of node (base station side) is used to receive the channel metric of the channel metric between the K nodes in the virtual second type node (terminal side), and the related technology has no virtual number. In the second type of nodes of the second type of nodes or other clusters, the second type of nodes are paired to form a Mu-MIMO data transmission scheme, and thus a scheme for transmitting the channel metrics between the nodes to the base station side by the terminal side is provided. Expanded the application range of MIMO technology.

Optionally, the foregoing channel metric received by the first receiving module 70 includes at least one of the following: a load level of the K second type inter-node interaction information, and first channel status information between the K second type nodes.

In order to determine channel state information in the above channel metric, as shown in FIG. 8, the foregoing apparatus further includes:

The first determining module 74 is configured to determine the first channel state information by using the following formula: CI=f(CI _i,j ), where the CI is the first channel state information, CI _i,j is the virtual second class The channel state information of the second type node whose index is I _i in the node to the node of the second type index of I _j , f is a predetermined function specified in advance, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠ i, The first determining module 74 is further configured to determine the first channel state information by: feeding the CI _i,j to the integrated node by using the second type node of the K second type nodes with the index I _i The integrated node includes at least one of the following: in the MIMO system, a second type of node other than the virtual second type node, and a second type node selected from the K second type nodes, a centralized processing device connected to the MIMO system; the first receiving module 70 is further configured to receive the foregoing integrated node to determine the first channel state information according to CI=f(CI _ij ); or the first receiving module 70 is further configured to receive the foregoing K the second type is the second type node the index of the section I _i Feedback CI _{i, j,} a first determining module 74 is also provided in the first channel state information is determined according CI _{i, j} and CI = f (CI _ij).

The first determining module 74 is further configured to determine the first channel state information by using the following formula: CI=f(CI _i ), where CI _i =f(CI _i,j ) is a second type node with an index I _i Channel state information, j=1,...,K,CI _i,j is the channel state information of the second type of nodes indexed as I _j in the K second type nodes to the second type node of the index I _i And j=1, wherein, the first determining module 74 is further configured to determine the first channel state information by: indexing I _i through the K second class nodes The second type of node feeds the CI _i to the synthesis node, wherein the integrated node includes at least one of the following: in the MIMO system, the second type of node other than the virtual second type node, from the K second a second type of node selected in the class node, and a centralized processing device not connected to the MIMO system; the first receiving module is further configured to receive the first channel state information determined by the integrated node according to CI=f(CI _i ) ; or the first receiving module is further configured to receive said K second-node of the index I _i Type II node feedback CI _i, the first determination module further provided in the first channel state information is determined according CI _i and CI = f (CI _i).

Incidentally, the first determining module 74 specifies the application of the function f comprising at least one of the following: the above-described CI _{i, j,} and / or averaging CI _i; above CI _{i, j,} and / or CI _i seek Maximum value; find the minimum value for CI _{i, j} and / or CI _{i above} .

In order to improve the foregoing technical solution, the foregoing apparatus further includes: a second receiving module 76, configured to receive, by the virtual second type node, the second channel state information of the virtual second type node to the first type of node, where The two channel state information is channel state information corresponding to the overall channel H obtained by combining all the channel combinations of the K nodes of the virtual node to the first class node, where H is a K·Nr row and an M·Nt column. A complex matrix, Nr is the number of antennas of a second type of node, Nt is the number of antennas of a first type of node, and M is the number of nodes of the first type in the MIMO system.

The second channel state information received by the second receiving module 76 includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to whether the second channel state information is The influence of the interaction information between the K second type nodes determines whether the second channel state information is in an ideal state.

In the embodiment of the present invention, the second channel state information in the ideal state received by the second receiving module 76 includes at least one of the following: the second signal to noise ratio information in the ideal state, and the second capacity in the ideal state. The information, the second throughput information in an ideal state, the second reception delay information in an ideal state, and the second channel state information in the non-ideal state include at least one of the following: a second letter in the non-ideal state The noise ratio information, the second capacity information in the non-ideal state, and the second throughput information in the non-ideal state.

In order to improve the above technical solution, the foregoing apparatus further includes: an obtaining module 78 (the obtaining module 78 and the obtaining module 40 in FIG. 4 may be the same module, or may not be the same module, and the symbols 78 and 40 are only used in the description to describe the solution. Clearly, the first channel state information and the second channel state information are set to be obtained; the second determining module 80 is configured to determine third channel state information according to the first channel state information and the second channel state information, where The third channel state information is the channel state information of the virtual second type node to the first type of node; the third determining module 82 is configured to determine the currently used MIMO mode and the MIMO configuration information according to the third state information, where the second The determining module 80 is configured to: when the second channel state information is the second channel state information in the non-ideal state, the second channel state information in the non-ideal state is used as the third channel state information; the second determining module 80, configured to include when the second channel state information is the second channel state information in an ideal state. The first determining unit 800 is configured to determine, according to the first channel state information, a delay amount between the virtual second type nodes, and the second determining unit 802 is configured to determine, according to the second channel state information, the virtual second type node to The transmission time between the first type of nodes; the third determining unit 804 is configured to determine the third channel state information according to the delay amount, the transmission time, and the second channel state information.

In order to improve the foregoing technical solution, the foregoing apparatus further includes: a third receiving module 84 configured to receive load level information between the K second type of nodes; and a fourth determining module 86 configured to determine the currently used MIMO according to the load level information The mode and the MIMO configuration information, in an optional example of the embodiment of the present invention, the apparatus further includes: a transmission module 88 configured to transmit data to the virtual second type node that determines to use the MIMO mode; and the sending module 90 ( The sending may be the same module as the sending module 42 in FIG. 4, or may not be the same module, and the numbers 90 and 42. It is only clear that the scheme is described in the specification, and is set to transmit the above MIMO configuration information to the above-mentioned virtual second type node.

Further, the fourth determining module 86 includes: a selecting unit 860 configured to select a virtual second type node with a minimum load level; and a fourth determining unit 862 configured to be a load level of the virtual second type node having the smallest load level When the threshold value is less than the preset threshold, the MIMO mode corresponding to the minimum load level is determined to be the currently used MIMO mode, and the virtual second type node index with the minimum load level is used as the MIMO configuration information.

It should be noted that the connection relationship of each module or each unit in FIG. 8 is only an example, and is not used to define the structure of the signaling transmission apparatus in the embodiment of the present invention.

In summary, the technical solution provided by the foregoing embodiments of the present invention can be summarized as follows: in a system including a transmitting network and a receiving network. The transmitting network includes M first-class nodes BS ₁ , . . . , BS _M , and the receiving network includes N second-class nodes UE ₁ , UE ₂ , . . . , UE _N . Here, M and N are positive integers greater than or equal to 1, and the channels of all M first-class nodes BS ₁ , . . . , BS _M to the ith second-type node are H _i , where H _i is the Nr row. , the complex matrix of the M·Nt column, i=1, . . . , N, where Nr is the number of antennas of a second type of node, and Nt is the number of antennas of a first type of node. The K second type nodes in the receiving network form a virtual second type node, and the index set of the K second type nodes constituting the virtual second type node is called MIMO configuration information, and is recorded as Ω={I ₁ , I ₂ , . . . , I _K }, I ₁ , I ₂ , . . . , I _K are K values of 1, ..., N, and K is an integer satisfying 1 < K ≤ N.

In order to better understand the above signaling transmission process, the following description is made in conjunction with the preferred embodiments, but is not intended to limit the embodiments of the present invention.

In a preferred embodiment of the present invention, the first type of nodes include, but are not limited to, various wireless communication devices such as a macro base station, a micro base station, and a wireless access point; and the second type of nodes include, but are not limited to, a data card, a mobile phone, and a notebook computer. , various computers such as personal computers, tablets, personal digital assistants, Bluetooth, and various wireless communication devices such as relays, remote devices, and wireless access points.

In a wireless system, there is one transmitting network having at least one base station, and at least one cluster under the base station, and each cluster has a plurality of second type nodes, such as a relay, a wireless access point, a small base station, or a home. Equipment such as base stations, mobile phones, data cards, notebooks, etc. For convenience of description, the second type of node is simply referred to as a node. As shown in Figure 3. There are 2 clusters in a cell, and there are 4 nodes in each cluster. The users in the first cluster are labeled as nodes 1 to 4; the users in the second cluster are labeled as nodes 5 to 8. Here, the nodes in each cluster are relatively close to each other. The distance between different clusters is relatively far from each other. Nodes within a cluster can communicate via wireless Backhual to form virtual MIMO. The nodes constituting the plurality of virtual MIMOs together form a virtual second type node, and the received data information and channel information are shared between them to implement joint demodulation decoding. They are similar to SU-MIMO under the ideal Backhual hypothesis. Under the Backhual, there are some performance losses. In a downlink virtual MIMO system, a downlink virtual receiving terminal formed by a plurality of terminals can obtain higher diversity or multiplexing gain because it has more receiving antennas. As shown in Figure 10, it is assumed that each node has only one receiving antenna. If SU-MIMO is used, the base station can only use one layer of transmission for each terminal, and the virtual second type nodes formed by nodes 1 to 4 have 4 antennas can be transmitted in up to 4 layers, and the multiplexing gain is significantly improved. Compared with MU-MIMO, since MU-MIMO requires that the equivalent channels between users must be strictly orthogonal to ensure that there is no interference between users, it is often difficult to do so in practice, so the performance of MU-MIMO will be large. Discounted, while using downlink virtual MIMO, there is no inter-user interference, performance is better than MU-MIMO. Different from SU-MIMO and MU-MIMO, the present invention shares the data received on the respective antennas in the downlink virtual MIMO, and the transmission, reception, and demodulation of the data need to rely on signaling implementation, and the following specific letters Let the transmission scenario be explained.

A preferred embodiment of the present invention describes a flow of information interaction of a virtual second type of node to the transmitting base station in order to feed back the first channel state information and the second channel state information. In Figure 3, there are two clusters, wherein the signaling interaction flow of each cluster is similar, without loss of generality. Here, only the signaling transmission process of the virtual second-class node in one cluster is described.

It should be noted that, in order to illustrate the simplicity of the problem, the number of nodes of the second type of nodes of the virtual second type node in the embodiment is set to 4, and the number of nodes of the first type is set to 2, but the method of the present invention can be applied to The case where the second type of node is larger than 1 node. The number of nodes in the first type is greater than or equal to one.

Preferred embodiment 1:

The preferred embodiment illustrates a process in which a virtual second type of node feeds back a load level.

As shown in FIG. 9, in a cluster in a cell, there are four second-type nodes, which are node 1, node 2, node 3, and node 4, respectively, to form a virtual second-class node. The node i transmits the load level Fi when the node i communicates with other nodes to the base station of the transmitting network, and the base station receives the load level Fi, where i=1, 2, 3, 4. And processing F1, F2, F3, and F4 to obtain a load level F corresponding to the virtual second type node, and the processing includes, but is not limited to, taking the minimum value of F1, F2, F3, and F4 as F, or taking F1. The maximum value of F2, F3, and F4 is F, or the average value of F1, F2, F3, and F4 is F.

The base station compares the load levels F of a plurality of different virtual second type nodes. The virtual second type node with the lowest load level is selected. If the load level of the virtual second type node is less than the preset threshold, the virtual second type node is selected for virtual MIMO transmission, and the corresponding node 1~ The user index of node 4 is MIMO configured and notified to the virtual second type of node. Otherwise, a single second type node or a plurality of second type nodes are selected for Mu-MIMO transmission.

Preferred embodiment 2:

As shown in FIG. 9, in a cluster in a cell, there are four second-type nodes, which are node 1, node 2, node 3, and node 4, respectively, to form a virtual second-class node. The node i transmits the load level Fi when the node i communicates with other nodes to one integrated node outside the four nodes, and the integrated node receives the load level Fi, where i=1, 2, 3, 4. And processing F1, F2, F3, and F4 to obtain a load level F corresponding to the virtual second type node, and the processing includes, but is not limited to, taking the minimum value of F1, F2, F3, and F4 as F, or taking F1. The maximum value of F2, F3, and F4 is F, or the average value of F1, F2, F3, and F4 is F, and the integrated node transmits the load level F to the base station.

The base station receives the load level F corresponding to the plurality of virtual second type nodes, and the base station compares the load levels F of the plurality of different virtual second type nodes. The virtual second type node with the lowest load level is selected. If the load level of the virtual second type node is less than the preset threshold, the virtual second type node is selected for virtual MIMO transmission, and the corresponding node 1~ The user index of node 4 is MIMO configured and notified to the virtual second type of node. Otherwise, a single second type node or a plurality of second type nodes are selected for Mu-MIMO transmission.

Preferred Embodiment 3:

As shown in FIG. 9, in a cluster in a cell, there are four second-type nodes, which are node 1, node 2, node 3, and node 4, respectively, to form a virtual second-class node. The node i sends the load level Fi when the node i communicates with other nodes to the first node 1. Here, the node 1 is used as an integrated node, and the processing methods of other nodes as integrated nodes are similar, and are not repeated here. Node 1 receives the load level Fi, where i = 2, 3, 4. Since the node 1 knows the size of F1, the processing is combined with F2, F3, and F4 to obtain the load level F corresponding to the virtual second type node. The processing includes, but is not limited to, the minimum value of F1, F2, F3, and F4 is F. Or, the maximum value of F1, F2, F3, and F4 is F, or the average value of F1, F2, F3, and F4 is F, and the integrated node transmits the load level F to the base station.

Preferred embodiment 4:

This embodiment describes a process in which a virtual second type node feeds back first channel state information.

As shown in FIG. 9, in a cluster in a cell, there are four second type nodes, and node 1, node 2, node 3, and node 4 are combined to form a virtual second type node. As shown in FIG. 10, each of the nodes 1 to 4 constituting the virtual second type node has a channel information C _ij , and the channel information includes but is not limited to the first signal to noise ratio information, the first capacity information, First throughput information, first reception delay information. The method of obtaining the channel information C _ij includes, but is not limited to, the node j transmits a data packet to the node i, the node i receives the data packet, and measures the channel information C _ij .

Node i sends C _ij to the base station of the transmitting network, and the base station receives C _ij , where i, j = 1, ..., 4, i ≠ j. And processing the C _ij to obtain the first channel state information CI=f(CI _ij ) corresponding to the virtual second type node, the processing f including but not limited to taking C _ij , i, j=1,... , 4, i ≠ j minimum is CI, or take C _ij , i, j = 1, ..., 4, i ≠ j maximum value is CI, or take C _ij , i, j = 1, ... ., the average value of 4, i≠j is CI. And the processed CI is used as the first channel state information of the virtual second type node.

Preferred embodiment 5:

Node i sends C _ij to the transmitting synthesis node, and the synthesis node receives C _ij , where i, j = 1, ..., 4, i ≠ j. And processing C _ij to obtain first channel state information CI=f(CI _ij ) corresponding to the virtual second type node, such processing f includes but not limited to taking C _ij , i, j=1,... , 4, i ≠ j minimum is CI, or take C _ij , i, j = 1, ..., 4, i ≠ j maximum value is CI, or take C _ij , i, j = 1, ... ., the average value of 4, i≠j is CI. And the processed CI is used as the first channel state information of the virtual second type node. The synthesizing node sends the CI to the base station, and the base station receives the CI as the first channel state information of the virtual second type node.

The synthesis node may be a second type node outside the virtual second type node (as shown in FIG. 11), or may be any one of nodes 1 to 4 in the virtual second type node (as shown in FIG. 12). ), if node i acts as an integrated node, then it does not need to send channel information from other nodes to node i, i = 1, 2, 3, 4.

Preferred Embodiment 6:

The preferred embodiment illustrates a process in which a virtual second type of node feeds back first channel state information.

As shown in FIG. 9, in a cluster in a cell, there are four second-type nodes, which are node 1, node 2, node 3, and node 4, respectively, to form a virtual second-class node. As shown in FIG. 10, each of the nodes 1 to 4 constituting the virtual second type node has a channel information C _ij , and the channel information includes but is not limited to the first signal to noise ratio information, the first capacity information, First throughput information, first reception delay information. The method of obtaining the channel information C _ij includes, but is not limited to, the node j sends a data packet to the node i, the node i receives the data packet, and measures the channel information C _ij , i, j = 1, ..., 4, i ≠ j.

Node i processes C _ij , i, j = 1, ..., 4, i ≠ j to obtain channel information CI _i = f (CI _ij ) of the node i, and sends it to an integrated node outside the four nodes. , here, j=1, 2, 3, 4. The synthesis node processes the channel information CI _i , i=1, 2, 3, 4 of the receiving node i to obtain the first channel state information of the virtual second type node, CI=f(CI _i ). And send it to the base station. The base station receives the CI and uses it as the channel state information of the virtual second type of node. The above process f includes, but is not limited to, taking a maximum value, a minimum value, or an average value for CI _i , CI _i .

The synthesis node may be a second type node outside the virtual second type node, or may be any one of node 1 to node 4 in the virtual second type node. If node i is an integrated node, then it does not need to be The channel information of other nodes to node i is sent to itself, i = 1, 2, 3, 4.

Preferred embodiment 7:

The node i processes C _ij , i, j = 1, ..., 4, i ≠ j to obtain channel information CI _i = f (CI _ij ) of the node i, and transmits it to the base station, where j=1, 2, 3, 4. The base station receives the channel information CI _i , i=1, 2, 3, 4 of the node i for processing, and obtains first channel state information of the virtual second type node, CI=f(CI _i ). The above process f includes, but is not limited to, taking the maximum value, the minimum value, or the average value for C _ij , CI _i .

Preferred Embodiment 8:

The preferred embodiment illustrates a process in which a virtual second type of node feeds back second channel state information, and the second type of channel state information is non-ideal second type channel state information.

As shown in FIG. 9, in a cluster in a cell, there are four second type nodes, and node 1, node 2, node 3, and node 4 are combined to form a virtual second type node. As shown in Figure 13,

The base station sends the pilot information to the virtual second type node, and the nodes 1 to 4 of the virtual second type node receive the pilot information, and estimate the base station to its own channel information H _i according to the pilot information, where CI _i is Nr Row, the complex matrix of the M·Nt column, i=1,...,4, where Nr is the number of antennas of a second type of node, and Nt is the number of antennas of a first type of node. The virtual second type node forms combined channel information H according to H _i , i=1, . . . , 4, and the combined channel information refers to the (i-1)Nr+1 to i×Nr behavior channel matrix H _{i of} H. , i=1,...,4.

Using H, and considering the transmission time delay between nodes 1 to 4, and various influencing factors encountered in the transmission, calculating second non-ideal channel state information, the second channel state information including the second non-ideal signal to noise ratio Information, second non-ideal capacity information, and second non-ideal throughput information.

And transmitting the second non-ideal channel state information to the base station, and after receiving the information, the base station selects a virtual second type node with the second non-ideal channel state information to be compared with the second type node of the other single second type node, if The second type of node corresponding to the virtual node is large, and the MIMO mode is determined to be virtual MIMO, and the node index corresponding to the virtual second type node with the second non-ideal channel state information is the MIMO configuration.

Preferred embodiment 9:

The preferred embodiment illustrates a process in which a virtual second type node feeds back second channel state information, and the second channel state information is second ideal channel state information.

As shown in FIG. 9, in a cluster in a cell, there are four second type nodes, and node 1, node 2, node 3, and node 4 are combined to form a virtual second type node. As shown in Figure 11,

The base station sends the pilot information to the virtual second type node, and the nodes 1 to 4 of the virtual second type node receive the pilot information, and estimate the base station to its own channel information H _i according to the pilot information, where H _i is Nr Row, the complex matrix of the M·Nt column, i=1,...,4, where Nr is the number of antennas of a second type of node, and Nt is the number of antennas of a first type of node. The virtual second type node forms combined channel information H according to H _i , i=1, . . . , 4, and the combined channel information refers to the (i-1)Nr+1 to i×Nr behavior channel matrix H _{i of} H. , i=1,...,4.

Using H, the second ideal channel state information is calculated without considering the transmission time delay between nodes 1 to 4 and various influencing factors encountered in the transmission, and the second channel state information includes the second ideal signal to noise ratio information. And second ideal capacity information, second ideal throughput information, and second ideal delay amount.

And transmitting the second ideal channel state information to the base station, after receiving the information, the base station according to the first channel state letter And the second channel state information determines the third channel state information, and the virtual second type node or the second type node that selects the third channel state information is determined to determine the node index corresponding to the MIMO mode virtual second type node is a MIMO configuration.

Preferred embodiment 10:

The preferred embodiment illustrates a process in which the first type of node determines the amount of delay D based on the first channel state information.

The first channel state information CI received by the base station is the first delay amount, and then the base station determines that the delay amount is a value corresponding to CI.

Preferred Embodiment 11:

The first channel state information CI received by the base station is the first throughput, and the base station needs to obtain the size P1 of the data packet, where P1 is a predefined value of the base station and the second type of node, for example, P1 megabits/second, and the value may be It is a base station and a second type of node that communicate with each other, or it can be standardized. Then the base station determines the delay amount as D = P1/CI.

Preferred embodiment 12:

The first channel state information CI received by the base station is the first capacity, then the base station needs to acquire the size P1 of the data packet, and the bandwidth W used to transmit the packet. P1 and W are predefined values of the base station and the second type of node. For example, P1 megabits/second and W is megabytes. This value may be that the base station and the second type of node communicate with each other, or may be standardized. Then the base station determines that the delay amount is D=P1/W/CI.

Preferred embodiment 13:

The first channel state information CI received by the base station is a first signal to noise ratio, and the signal to noise ratio may include a signal to noise ratio, a signal dry ratio, a load drying ratio, and the base station needs to acquire a packet size P1, and a packet used to transmit the packet. The size of the bandwidth W, P1 and W are predefined values of the base station and the second type of node, for example, P1 megabits/second, and W is megabytes. This value may be that the base station and the second type of node communicate with each other, or may be Standardized definition. And the base station needs to calculate the capacity corresponding to the signal-to-noise ratio, f1 (CI), and f1 (A) is a logarithmic function that finds 2 as the base for A, and can also directly obtain the corresponding capacity according to the CI difference table.

Then the base station determines that the delay amount is D = P1/W / (f1 (CI)).

Preferred embodiment 14:

The preferred embodiment illustrates the process by which the first type of node determines the transmission time T based on the second ideal channel state information.

The second channel state information CSI received by the base station is the second ideal delay amount, and then the base station determines that the delay amount is a value corresponding to the CSI.

Preferred embodiment 15:

The second ideal channel state information CSI received by the base station is the second ideal throughput, and the base station needs to obtain the size P1 of the data packet, where P1 is a predefined value of the base station and the second type of node, for example, P1 megabits/second, this The value may be that the base station and the second type of node communicate with each other, or may be standardized. Then the base station determines the delay amount as T=P1/CSI.

Preferred Embodiment 16:

The second ideal channel state information CSI received by the base station is the second ideal capacity, then the base station needs to acquire the size P1 of the data packet and the bandwidth W used to transmit the packet, and P1 and W are predefined for the base station and the second type of node. A value, such as P1 megabits/second, and W is megabytes. This value may be that the base station and the second type of node communicate with each other, or may be standardized. Then the base station determines the delay amount as T=P1/W/CSI.

Preferred Embodiment 17:

The first ideal channel state information CSI received by the base station is a second ideal signal to noise ratio, and the signal to noise ratio may include a signal to noise ratio, a signal drying ratio, a load drying ratio, and the base station needs to acquire a packet size P1, and transmit the packet. The bandwidth W used, P1 and W are predefined values of the base station and the second type of node, for example, P1 megabits/second, and W is megabytes. This value may be a communication agreement between the base station and the second type of node. Can be standardized definition. And the base station needs to calculate the capacity corresponding to the signal-to-noise ratio, f1 (CI), and f1 (A) is a logarithmic function that finds 2 as the base for A, and can also directly obtain the corresponding capacity according to the CI difference table.

Then the base station determines the delay amount as T = P1/W / (f1 (CSI)).

Preferred embodiment 18:

The preferred embodiment illustrates a process in which the first type of node determines third channel information based on the second ideal channel state information, the transmission time T, and the delay amount D.

The base station receives the first channel state information, calculates the delay amount D by using the first channel state information, the base station receives the second channel state information, and calculates the transmission time T by using the first channel state information.

When the received CSI is the second ideal delay amount, the third channel state information is C=Th*T/(D+T), Th the first type node and the second type node pre-defined throughput size or previous transmission. The average of the throughput.

Preferred embodiment 19:

The base station receives the first channel state information, calculates the delay amount D by using the first channel state information, and the base station receives the second channel. Status information, and the transmission time T is calculated using the first channel state information.

When the received CSI is the second ideal throughput, the second ideal capacity, and the second ideal signal to noise ratio, the third channel state information is C=CSI*T/(D+T).

Preferred embodiment 20:

The preferred embodiment illustrates a process in which a first type of node determines MIMO mode and MIMO configuration information from the third channel state information and transmits data according to the determined MIMO mode and transmits MIMO configuration information to the second type of node.

The base station receives the first channel state information, calculates the delay amount D by using the first channel state information, the base station receives the second channel state information, and calculates the transmission time T by using the first channel state information. The third channel state information of the virtual second type node is calculated according to the received second channel state information and the delay amount D, the transmission time T.

It should be noted that, for a node that is not a virtual second type, the third channel state information received by the base station is channel state information fed back by a single second type of node, which is the same as the existing technical standards such as LTE.

The base station compares the size of the third channel state information, and selects the second type node or the virtual second type node with the third channel state information as its MIMO mode. If the MIMO mode virtualizes the second type node, the corresponding composition is also required. The index of the second type of node of the virtual second type node is determined as MIMO configuration information and sent to the second type of node. The data is transmitted using the determined MIMO mode.

The second type of node performs demodulation decoding according to the received MIMO configuration information and the received data information. If it is virtual MIMO, joint demodulation decoding is required. Otherwise, only a single second type of node is required to demodulate and decode.

It should be noted that the channel capacity herein may also be other technical indicators, such as signal to noise ratio, channel quality, signal to interference and noise ratio, bit error rate, block error rate, and frame error rate.

In order to better understand the structure and flow of the above signaling transmission device in practical applications, the following two preferred embodiments are described:

Preferred embodiment 21:

A preferred embodiment of the present invention provides a multiplex-multi-output system signaling transmission apparatus, which is disposed on a receiving network side (ie, a second type of node side), and includes:

a first channel state information determining unit (corresponding to the determining module 44 of the foregoing embodiment) configured to determine first channel state information of the other second type of node to the second type of node;

a second channel state information determining unit (corresponding to the first determining module 44 of the foregoing embodiment) configured to determine second channel state information of the other second type of node to the second type of node;

The sending unit (corresponding to the sending module 42 of the foregoing embodiment) is configured to feed back the first channel state information and/or the second channel state information determined by the determining unit to the integrated node or the first type node;

Preferred embodiment 22:

The preferred embodiment of the present invention further provides a multi-input and multi-output system signaling transmission apparatus, which is disposed on a transmission network (ie, a first type of node), and includes:

The receiving unit (corresponding to the first receiving module 70 and/or the second receiving module 72 in the foregoing embodiment) is configured to receive first channel state information and second channel state information of the network;

The third channel state information determining unit (corresponding to the second receiving module 80 in the foregoing embodiment) is configured to determine third state information according to the first channel state information and the second channel state information, where the third non-ideal channel state is included An information determining unit and a third ideal channel state information determining unit, the third non-ideal channel state information determining unit configured to determine third channel state information according to the second non-ideal channel state information, the third ideal channel state determining unit The third channel state information is determined to be determined according to the first channel state information and the second ideal channel state information. It includes a delay amount determining unit and a transmission time determining unit, and a third channel state information determining unit.

The delay determining unit is configured to determine, according to the first channel state information, a delay amount between the second type of nodes in the virtual second type node; the transmission time determining unit is configured to determine the virtual second type node according to the second channel state information CSI The transmission time between the first type of nodes; the third channel state information determining unit is configured to determine the third channel state information according to the delay and transmission time and the second ideal channel state information.

a determining unit, configured to determine MIMO mode and MIMO configuration information according to the third channel state information; and an indicating unit configured to determine MIMO channel configuration information of the virtual second type node.

The transmission unit (corresponding to the transmission module 90 in the above embodiment), the user transmits the measurement data to the receiving network according to the MIMO mode and the MIMO configuration information.

In another embodiment, software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

In summary, the embodiments of the present invention achieve the following technical effects: in the related art, in the second type of nodes in which there is no virtual second type node or other clusters, the second type of nodes are paired to form Mu-MIMO data. The problem of the transmission scheme further provides a scheme for the terminal side to transmit the channel metric between the nodes to the base station side, thereby expanding the application range of the MIMO technology.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the objects so used are interchangeable, where appropriate, so that the embodiments of the invention described herein can be carried out in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description 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 modifications, 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.

Industrial applicability

With the above technical solution provided by the present invention, a technical solution for transmitting channel metrics between K nodes in a virtual second type node (terminal side) to a first type of node (base station side) is adopted, and the related art is still solved. In the second type of nodes without virtual second type nodes or other clusters, the second type of nodes are paired to form a Mu-MIMO data transmission scheme, and thus a terminal side is provided to transmit channel metrics between nodes to the base station. The side scheme expands the application range of MIMO technology.

Claims

A signaling transmission method for a multiple input multiple output MIMO system, comprising:

Transmitting a channel metric between the K second type nodes in the virtual second type node to the first type of node, where K is a positive integer, and the channel metric is used to characterize the K second type of nodes Channel condition.
The method of claim 1, wherein the channel metric comprises at least one of: a load level of the K second type of inter-node interaction information, and a first channel between the K second type of nodes status information.
The method of claim 2, wherein the first channel state information is determined by the following formula:

CI=f(CI i,j ), where CI is the first channel state information, CI i,j is a second type of node indexed I i in the virtual second type node to index I j The channel state information of the second type of node, f is a predetermined function specified in advance, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠ i.
The method of claim 3, wherein the first channel state information is determined by:

Passing CI ij to the first type of node through a second type of node indexed I i of the K second type nodes, wherein the CI ij is used for the first type of node according to CI=f ( CI ij ) determining the first channel state information; or

Passing CI ij to the synthesis node through a second type of node indexed I i of the K second type nodes, wherein the CI ij is used by the synthesis node to determine the CI according to CI=f(CI ij ) The first channel state information, the synthesis node feeds back the first channel state information to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, the virtual second type node A second type of node other than the second type of node selected from the K second type of nodes, and a centralized processing device not connected to the MIMO system.
The method of claim 2, wherein the first channel state information is determined by the following formula:

CI=f(CI i ), where CI i =f(CI i,j ) is channel state information of a second type of node indexed as I i , j=1,...,K,CI i,j is K second-node with index I j to a second node type I i is the index of the second class node channel state information, j = 1, ..., K and j ≠ i.
The method of claim 5, wherein the first channel state information is determined by:

Feeding CI i to the first type of node by using a second type of node indexed as I i in the K second type of nodes, wherein the CI i is used by the first type of node according to CI=f ( CI i ) determining the first channel state information; or

CI i is fed back to the synthesis node by a second type of node indexed I i of the K second type nodes, wherein the CI i is used by the synthesis node to determine the CI according to CI=f(CI i ) The first channel state information, the synthesis node feeds back the first channel state information to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, the virtual second type node A second type of node other than the second type of node selected from the K second type of nodes, and a centralized processing device not connected to the MIMO system.
The method of any of claims 3-6, wherein the specified function f comprises at least one of the following:

Seeking the CI i, j and / or the average CI i; selecting the maximum value of the CI i, j, and / or CI i; minimization of the CI i, j, and / or CI i.
The method according to any one of claims 3-6, wherein the CI i,j comprises at least one of the following information: first signal to noise ratio information, first capacity information, first throughput information, first reception Delayed information.
The method according to claim 8, wherein said first information signal to noise ratio comprises: index node of the second kind is index I i I j to a channel corresponding to the second type node drying channel than the channel a corresponding signal-to-noise ratio, a carrier-to-dry ratio corresponding to the channel; the first capacity information includes: a channel capacity corresponding to a channel of a second type node with an index I i to a node of a second type index of the I j ; The first throughput information includes: a throughput of a channel corresponding to a channel of the second type node whose index is I i to a node of the second type node of the index I i ; the first receiving delay information includes: a second index of I i The time interval at which the class node sends information to the second class node indexed as I j .
The method of claim 1 wherein the method further comprises:

And feeding back, to the first type of node, second channel state information of the virtual second type node to the first type of node, where the second channel state information is K second of the virtual second type node Channel state information corresponding to the overall channel H obtained by combining all channels of the class node to the first type of node, where H is a K·Nr row, a complex matrix of M·Nt columns, and Nr is a second type of node The number of antennas, Nt is the number of antennas of one of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.
The method of claim 10, wherein

The second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to the second channel state information, whether the second or second The influence of the interaction information between the class nodes determines whether the second channel state information is in an ideal state.
The method of claim 11 wherein

The second channel state information in the ideal state includes at least one of: second signal to noise ratio information in the ideal state, second capacity information in the ideal state, and in the ideal state Second throughput information, second reception delay information in the ideal state;

The second channel state information in the non-ideal state includes at least one of: second signal to noise ratio information in a non-ideal state, second capacity information in a non-ideal state, and second in a non-ideal state Throughput information.
A signaling transmission method for a multiple input multiple output MIMO system, comprising:

Receiving channel metrics between K second-type nodes in the virtual second-type node, where K is a positive integer, and the channel metric is used to characterize channel conditions between the K second-type nodes.
The method according to claim 13, wherein said channel metric comprises at least one of: a load level of said K second type of inter-node interaction information, and a first channel between said K second type of nodes status information.
The method of claim 14, wherein the first channel state information is determined by the following formula:

CI=f(CI i,j ), where CI is the first channel state information, CI i,j is a second type of node indexed as I i in the virtual second type node to index I j The channel state information of the second type of node, f is a predetermined function specified in advance, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠ i.
The method of claim 15, wherein the first channel state information is determined by:

Receiving CI i,j fed back by the second type of nodes indexed I i in the K second type nodes, and determining the first channel state information according to CI i,j and CI=f(CI i,j ) ;or

Cis , j is fed back to the synthesis node by the second type of nodes in the K second type nodes indexed as I i , wherein the synthesis node includes at least one of the following: in the MIMO system, the virtual a second type of node other than the second type of node, a second type of node selected from the K second type of nodes, and a centralized processing device not connected to the MIMO system;

Receiving, by the integrated node, the first channel state information determined according to CI=f(CI ij ).
The method of claim 14, wherein the first channel state information is determined by the following formula:

CI=f(CI i ), where CI i =f(CI i,j ) is channel state information of the second type of node with index I i , j=1,...,K,CI i,j is K second class node index I j to a second node type I i is the index of the second class node channel state information, j = 1, ..., K and j ≠ i.
The method of claim 17, wherein the first channel state information is determined by:

Receiving CI i fed back by the second type node of the K second type nodes indexed as I i , and determining the first channel state information according to CI i and CI=f(CI i ); or

The CI i is fed back to the synthesis node by the second type node of the K second type nodes indexed as I i , wherein the synthesis node includes at least one of the following: in the MIMO system, the virtual second a second type of node other than the class node, a second type node selected from the K second type nodes, and a centralized processing device not connected to the MIMO system;

Receiving, by the integrated node, the first channel state information determined according to CI=f(CI i ).
The method according to any of claims 15-18, wherein the specified function f comprises at least one of the following:

Seeking the CI i, j and / or the average CI i; selecting the maximum value of the CI i, j, and / or CI i; minimization of the CI i, j, and / or CI i.
The method of claim 14, wherein the method further comprises:

Receiving, by the virtual second type node, the second channel state information of the virtual second type node to the first type of node, where the second channel state information is the virtual second type node K Channel state information corresponding to the overall channel H obtained by combining all channels of the second type of nodes to the first type of nodes, where H is a K·Nr row, a complex matrix of M·Nt columns, and Nr is a second class The number of antennas of the node, Nt is the number of antennas of one of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.
The method of claim 20, wherein

The second channel state information includes: the second channel state information in an ideal state, and second channel state information in a non-ideal state, wherein, according to the second channel state information, whether the second or second The influence of the interaction information between the class nodes determines whether the second channel state information is in an ideal state.
The method of claim 21, wherein

The second channel state information in the ideal state includes at least one of: second signal to noise ratio information in the ideal state, second capacity information in an ideal state, second throughput information in an ideal state, Second receiving delay information in an ideal state;

The second channel state information in the non-ideal state includes at least one of: second signal to noise ratio information in the non-ideal state, second capacity information in the non-ideal state, and the non-ideal Second throughput information in the state.
The method of claim 20, wherein the method further comprises:

Obtaining the first channel state information and the second channel state information;

Determining third channel state information according to the first channel state information and the second channel state information, where the third channel state information is channel state information of the virtual second type node to the first type of node;

The currently used MIMO mode and MIMO configuration information are determined based on the third state information.
The method according to claim 23, wherein determining the third channel state information according to the first channel state information and the second channel state information comprises:

When the second channel state information is the second channel state information in the non-ideal state, the second channel state information in the non-ideal state is used as the third channel state information.
The method according to claim 23, wherein when the second channel state information is the second channel state information in the ideal state, the third channel state information is determined according to the first channel state information and the second channel state information, include:

Determining, according to the first channel state information, a delay amount between the virtual second type nodes;

Determining, according to the second channel state information, a transmission time between the virtual second type node and the first type of node;

The third channel state information is determined according to the delay amount, the transmission time, and the second channel state information.
The method of claim 25, wherein determining the amount of delay between the virtual second type of nodes based on the first channel state information comprises:

When the first channel state information indicates a first delay amount, the first delay amount is used as a delay amount between the virtual second type nodes;

When the first channel state information indicates the first throughput, the quotient of the data packet size and the first channel state information is used as a delay amount between the virtual second type nodes, wherein the data packet size a size of a data packet predefined for the first type of node and the second type of node;

Dividing the packet size by the number when the first channel state information indicates the first capacity Obtaining a quotient according to the bandwidth used by the packet, and dividing the quotient by the first channel state information to obtain a delay amount between the virtual second type nodes;

When the first channel state information indicates the first signal to noise ratio, the data packet size is divided by the bandwidth used for transmitting the data packet, and the quotient is divided by the first channel state information. The capacity of the virtual second type of node is obtained, wherein the capacity corresponding to the first channel state information is determined by substituting the first channel state information into a logarithm of the base 2 Obtaining a function value, determining a capacity corresponding to the first channel state information according to a correspondence between the first channel ratio and the capacity.
The method according to claim 25, wherein determining the transmission time between the virtual second type node and the first type of node according to the second channel state information comprises:

When the second channel state information indicates a second delay amount, the second delay amount is used as the transmission time;

When the second channel state information indicates the second throughput, the quotient of the data packet size and the second channel state information is used as the transmission time, where the data packet size is the first type of node And a size of a predefined packet of the second type of node;

When the second channel state information indicates the second capacity, the data packet size is divided by the bandwidth used for transmitting the data packet, and the quotient is divided by the second channel state information to obtain the Transmission time

When the second channel state information is the second signal to noise ratio, the data packet size is divided by the bandwidth used for transmitting the data packet, and the quotient is divided by the second channel state information. The capacity is obtained by the transmission time, wherein the capacity corresponding to the second channel state information is determined by: substituting the second channel state information into a logarithm function of base 2 to obtain a function value, according to the A correspondence between the channel ratio and the capacity determines a capacity corresponding to the first channel state information.
The method according to claim 25, wherein determining the third channel state information according to the delay amount, the transmission time and the second channel state information comprises:

When the second channel state information indicates a second delay amount in an ideal state, the third channel state information is determined according to the following formula:

C=Th·T/(D+T), where C is third channel state information, and Th is a predefined throughput size or an average of specified transmission throughputs of the first type of node and the second type of node a value, T is the transmission time, and D is the delay amount;

When the second channel state information indicates a second throughput, a second capacity, and a second signal to noise ratio in a non-ideal state, determining the third channel state information according to the following formula:

C=CSI·T/(D+T), where CSI is the second channel state information.
The method of claim 23, wherein the method further comprises:

The MIMO mode corresponding to the parameter value indicated by the third channel state information is selected as the currently used MIMO mode, and the second type of node index corresponding to the MIMO mode is used as the MIMO configuration information.
The method of claim 14, wherein the method further comprises:

Receiving load level information between the K second type nodes;

The currently used MIMO mode and the MIMO configuration information are determined based on the load level information.
The method according to claim 23 or 30, wherein after determining the currently used MIMO mode and the MIMO configuration information, the method further includes:

Data is transmitted to the virtual second type node that determines to use the MIMO mode, and the MIMO configuration information is sent to the virtual second type node.
The method according to claim 30, wherein determining the currently used MIMO mode and the MIMO configuration information according to the load level information comprises:

Selecting a virtual second-type node with the lowest load level, and determining that the MIMO mode corresponding to the minimum load level is the currently used MIMO when the load level of the virtual second-type node with the lowest load level is less than a preset threshold. A mode, and the virtual second type node index that minimizes the load level is used as the MIMO configuration information.
The method according to claim 29 or 32, wherein

The MIMO mode includes at least one of: a transmission mode of a single second type of node, a MIMO transmission mode in which at least one second type of node transmits at the same time and the second type of node does not share received data, and at least one second type of node simultaneously The MIMO transmission mode in which the frequency is transmitted and the second type of node shares the received data.
The method according to claim 20, wherein the first type of node comprises at least one of: a macro base station, a micro base station, a wireless access point device, and the second type of node comprises at least one of: a terminal, a middle Following equipment, remote equipment, wireless access point equipment.
A signaling transmission device for a multiple input multiple output MIMO system, comprising:

a sending module, configured to send a channel metric between the K second type nodes in the virtual second type node to the first type of node, where K is a positive integer, and the channel metric is used to represent the K first The channel condition between the two types of nodes.
The apparatus according to claim 35, wherein said channel metric transmitted by said transmitting module comprises at least one of: a load level of said K second type of inter-node interaction information, said K second classes First channel state information between nodes.
The apparatus of claim 36, wherein said apparatus further comprises: a determining module configured to determine said first channel state information by CI=f(CI i,j ), wherein CI is said The first channel state information, CI i,j is channel state information of the second type node of the virtual second type node indexed as I i to the second type node of the index I j , and f is a preset designation Function, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j≠i.
The apparatus according to claim 37, wherein said determining module is further configured to determine said first channel state information by: said second class of nodes indexed I i of said K second class nodes CI ij is fed back to the first type of node, wherein the CI ij is used by the first type of node to determine the first channel state information according to CI=f(CI ij ); or by the K second A second type of node indexed I i in the class node feeds CI ij to the synthesis node, wherein the CI ij is used by the synthesis node to determine the first channel state information according to CI=f(CI ij ) The synthesis node feeds back the first channel state information to the first type of node, and the synthesis node includes at least one of the following: in the MIMO system, a second category other than the virtual second type node a node, a second type of node selected from the K second type of nodes, and a centralized processing device not connected to the MIMO system.
The apparatus of claim 37, wherein the determining module is further configured to determine the first channel state information by CI=f(CI i ), wherein CI i =f(CI i,j ) For the channel state information of the second type of node indexed as I i , j=1, . . . , K, CI i,j is the second type of node indexed as I j in the K second type nodes to index I i channel state information of the second type of node, j = 1, ..., K and j ≠ i.
The apparatus according to claim 39, wherein said determining module is further configured to determine said first channel state information by: a second type of node indexed as I i among said K second class nodes Feeding CI i to the first type of node, wherein the CI i is used by the first type of node to determine the first channel state information according to CI=f(CI i ); or by the K first A second type of node indexed as I i in the second type of node feeds CI i to the synthesis node, wherein the CI i is used by the synthesis node to determine the first channel state information according to CI=f(CI i ), The synthesis node feeds back the first channel state information to the first type of node, and the integrated node includes at least one of the following: in the MIMO system, a second other than the virtual second type node a class node, a second type of node selected from the K second class nodes, and a centralized processing device not connected to the MIMO system.
The apparatus according to any one of claims 37 to 40, wherein said specifying function f in said determining module comprises at least one of: averaging said CI i, j and/or CI i ; The CI i,j and/or CI i find a maximum value; a minimum value is determined for the CI i,j and/or CI i .
A signaling transmission device for a multiple input multiple output MIMO system, comprising:

a first receiving module, configured to receive a channel metric between the K second type nodes in the virtual second type node, where K is a positive integer, and the channel metric is used to represent the K second type nodes Channel situation.
The apparatus according to claim 42, wherein the channel metric received by the first receiving module comprises at least one of: a load level of the K second type inter-node interaction information, the K number First channel state information between the two types of nodes.
The apparatus of claim 43, wherein the apparatus further comprises: a first determining module configured to determine the first channel state information by CI=f(CI i,j ), wherein CI is The first channel state information, CI i,j is channel state information of the second type node of the virtual second type node indexed as I i to the index of the second type node of the I j , and f is preset Specify the function, 1 ≤ i ≤ K, 1 ≤ j ≤ K, j ≠ i.
The apparatus according to claim 44, wherein said first determining module is further configured to determine said first channel state information by: indexing the second of said K second class nodes as I i The class node feeds CI i,j to the synthesis node, wherein the synthesis node includes at least one of the following: in the MIMO system, a second type of node other than the virtual second type node, from the K a second type of node selected from the second type of nodes, a centralized processing device not connected to the MIMO system; the first receiving module is further configured to receive the integrated node to determine according to CI=f(CI ij ) Decoding the first channel state information; or the first receiving module is further configured to receive CI i,j fed back by the second type of node indexed as I i in the K second type of nodes, the first determining module further The first channel state information is determined to be determined according to CI i,j and CI=f(CI i,j ).
The apparatus according to claim 44, wherein said first determining module is further configured to determine said first channel state information by CI=f(CI i ), wherein CI i =f(CI i , j) the channel state information of the second class node of the index I i, j = 1, ..., K , CI i, j of said K second-node of the second class node index to the index I j It is the channel state information of the Ii second type node, j = 1, ..., K and j ≠ i.
The apparatus according to claim 46, wherein said first determining module is further configured to determine said first channel state information by: indexing the second of said K second class nodes as I i The class node feeds CI i to the synthesis node, wherein the synthesis node includes at least one of the following: in the MIMO system, other second type nodes other than the virtual second type node, from the K a second type of node selected from the second type of nodes, a centralized processing device not connected to the MIMO system; the first receiving module is further configured to receive the determined by the integrated node according to CI=f(CI i ) first channel state; or the first receiving module is further configured to receive the second category node K index of the second kind feedback node I i CI i, the first determining module is further provided according CI i and CI = f(CI i ) determine the first channel state information.
The apparatus according to any one of claims 44-47, wherein said specified function f applied in said first determining module comprises at least one of: averaging said CI i, j and / or CI i value; selecting the maximum value of the CI i, j, and / or CI i; minimization of the CI i, j, and / or CI i.
The device of claim 43, wherein the device further comprises:

a second receiving module, configured to receive second channel state information of the virtual second type node fed back by the virtual second type node to a first type of node, where the second channel state information is configured to form the virtual Channel state information corresponding to the overall channel H obtained by combining all channel combinations of the K second type nodes to the first type of nodes, where H is a K·Nr row, a complex matrix of M·Nt columns, Nr is the number of antennas of one of the second type of nodes, Nt is the number of antennas of one of the first type of nodes, and M is the number of the first type of nodes in the MIMO system.
The apparatus according to claim 49, wherein the second channel state information received by the second receiving module comprises: the second channel state information in an ideal state, and second channel state information in a non-ideal state. And determining whether the second channel state information is in an ideal state according to whether the second channel state information is affected by the interaction information of the K second type nodes.
The apparatus according to claim 50, wherein the second channel state information in the ideal state received by the second receiving module comprises at least one of: second signal to noise ratio information in the ideal state, The second capacity information in an ideal state, the second throughput information in an ideal state, the second reception delay information in an ideal state, and the second channel state information in the non-ideal state include at least one of the following: The second signal-to-noise ratio information in the non-ideal state, the second capacity information in the non-ideal state, and the second throughput information in the non-ideal state.
The device of claim 49, wherein the device further comprises:

An acquiring module, configured to acquire the first channel state information and the second channel state information;

a second determining module, configured to determine third channel state information according to the first channel state information and the second channel state information, where the third channel state information is a channel of the virtual second type node to the first type of node status information;

The third determining module is configured to determine the currently used MIMO mode and the MIMO configuration information according to the third state information.
The apparatus according to claim 52, wherein said second determining module is configured to set said non-ideal state when said second channel state information is second channel state information in a non-ideal state The two channel state information is used as the third channel state information.
The device according to claim 52, wherein the second determining module is configured to: when the second channel state information is the second channel state information in an ideal state, comprises:

a first determining unit, configured to determine, according to the first channel state information, a delay amount between the virtual second type nodes;

a second determining unit, configured to determine, according to the second channel state information, a transmission time between the virtual second type node and the first type of node;

And a third determining unit, configured to determine the third channel state information according to the delay amount, the transmission time, and the second channel state information.
The device of claim 43, wherein the device further comprises:

a third receiving module, configured to receive load level information between the K second type nodes;

The fourth determining module is configured to determine the currently used MIMO mode and the MIMO configuration information according to the load level information.
The device of claim 55, wherein the device further comprises:

a transmission module configured to transmit data to the virtual second type node that determines to use the MIMO mode;

And a sending module, configured to send the MIMO configuration information to the virtual second type node.
The apparatus of claim 55, wherein the fourth determining module comprises:

Selecting a unit, setting to select a virtual second type node with the lowest load level;

a fourth determining unit, configured to: when the load level of the virtual second type node with the smallest load level is less than a preset threshold, determine that the MIMO mode corresponding to the minimum load level is the currently used MIMO mode, and The virtual second type node index with the smallest load level is used as the MIMO configuration information.