WO2012155396A1

WO2012155396A1 - Control device and method for simulation channel in wireless network

Info

Publication number: WO2012155396A1
Application number: PCT/CN2011/078108
Authority: WO
Inventors: 陈诗军; 胡留军; 吴岩巍
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-05-19
Filing date: 2011-08-08
Publication date: 2012-11-22
Also published as: CN102790989A

Abstract

Disclosed in the present invention are a control device and method for simulation channel in a wireless network, wherein the device includes: a channel control unit, which is used for recording channel feature data of the wireless network channel where there is interference between an input baseband and a output baseband; a channel processing unit, which is used for performing channel processing on each input baseband data corresponding to the output baseband based on the channel feature data between the output baseband and the input baseband; a channel synthesis unit, which is used for superimposing the data processed by the channel corresponding to the output baseband and then sending superimposed data to the output baseband. On the one hand, the present invention can realize the functions of present emulation technique, including a point to point channel simulation; on the other hand, it can reappear a real-time, complicated real network channel environment under multi-channel interaction, which includes MIMO channel, multi-cell interaction channel, ET-AL.

Description

Wireless network channel analog control device and method

The present invention relates to the field of communications technologies, and in particular, to a wireless network channel analog system control apparatus and method. Background technique

The complexity, diversity, and time-varying of wireless network channels pose significant difficulties for wireless base station system design and system parameter configuration. Generally, before the mass base station system is applied in batches, it is difficult to predict the system performance in the network environment. Therefore, it is necessary to perform analog test on the wireless network channel in advance to fully expose the problems in the base station system products.

At present, the system test environment built in the lab usually only supports point-to-point function and performance verification, that is, only has wireless channel simulation capability, and does not have wireless network channel simulation capability. It is also because the laboratory system test can not reflect the characteristics of various wireless channels in the actual network environment. Usually, before the base station system is applied in batches, it is necessary to build a commercial experimental office of a certain scale to fully expose the problems existing in the base station system. The Commercial Laboratory needs to invest huge amounts of money and requires considerable construction and opening hours. Summary of the invention

In view of the above analysis, the present invention is directed to a wireless network channel analog control apparatus and method for compensating for the system test environment built by existing laboratories and the drawbacks and deficiencies of the commercial laboratory.

The object of the present invention is mainly achieved by the following technical solutions:

The invention provides a wireless network channel analog control device, comprising:

Channel control unit for wireless networks with interference between the input baseband and the output baseband The channel information is recorded on the network channel;

a channel processing unit, configured to perform channel processing on each input baseband data corresponding to the output baseband according to channel characteristic data between the output baseband and the input baseband;

And a channel synthesizing unit, configured to superimpose all the data processed by the channel corresponding to the output baseband, and send the superposed data to the output baseband.

Further, the channel control unit is configured to number the input baseband and the output baseband, respectively, by using the output baseband and the input baseband as a matrix row and column to form a predetermined control structure table; and between the input baseband and the output baseband The interfering wireless network channel records channel characteristic data of the wireless network channel at a corresponding position in a predetermined control structure table.

Further, the channel control unit is further configured to record a preset identifier symbol at a corresponding position of the predetermined control structure table for the wireless network channel that does not interfere with the input baseband and the output baseband.

The number is obtained by mapping the ports of the network channel analog control device and the baseband in the port according to a predetermined rule.

The invention also provides a network channel simulation control method, comprising:

Recording channel characteristic data for a wireless network channel having interference between the input baseband and the output baseband;

Channel processing is performed according to channel characteristic data between the output baseband and the input baseband for each input baseband data corresponding to the output baseband;

All the data processed by the above-mentioned channel corresponding to the output baseband are superimposed, and the superposed data is sent to the output baseband.

Further, recording channel characteristic data of the radio channel with interference between the input baseband and the output baseband includes:

The input baseband and the output baseband are numbered, and the output baseband and the input baseband are respectively used as rows and columns of the matrix to form a predetermined control structure table; and there exists between the input baseband and the output baseband The interfering wireless network channel records channel characteristic data of the wireless network channel at a corresponding position of the predetermined control structure table.

Further, the method further includes: recording a preset identification symbol in a predetermined control table for the wireless network channel that does not interfere with the input baseband and the output baseband.

The beneficial effects of the present invention are as follows:

The invention can realize the functions of the current simulation technology, including point-to-point channel simulation; on the other hand, it can reproduce the real-time and complex actual network channel environment under multi-channel interaction, including multiple input and multiple output (MIMO, Multiple) Input Multiple Output ) Channel, multi-cell interference channel, etc.

Other features and advantages of the invention will be set forth in the description in the description which follows. The objectives and other advantages of the invention will be realized and attained by the <RTI DRAWINGS

1 is a schematic structural diagram of a network channel analog control apparatus according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a MIMO wireless channel network according to a first method embodiment of the present invention; FIG. 3 is a network channel according to a first method embodiment of the present invention; A schematic diagram of the connection of an analog control device in a MIMO wireless channel network;

4 is a schematic flow chart of a first method embodiment of the present invention;

FIG. 5 is a schematic diagram of a wireless channel network in which interference and MIMO exist simultaneously according to a second method embodiment of the present invention; FIG.

6 is a schematic diagram of a connection of a network channel analog control apparatus in a wireless channel network in which both interference and MIMO exist in the second method embodiment of the present invention;

7 is a schematic flow chart of a second method embodiment of the present invention;

FIG. 8 is a schematic diagram of a wireless channel in which interference and MIMO exist simultaneously in an embodiment of a third method of the present invention; Network diagram

FIG. 9 is a schematic diagram of a connection of a network channel analog control apparatus in a wireless channel network where interference and MIMO exist simultaneously according to a third method embodiment of the present invention; FIG.

FIG. 10 is a schematic flowchart diagram of a third method embodiment of the present invention. detailed description

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings in which FIG.

First, the network channel analog control device according to the embodiment of the present invention will be described in detail with reference to FIG.

The network channel analog control device is connected between the base station and the terminal, where the number of the base station and the terminal is not limited, and may be one base station corresponding to multiple terminals, or multiple base stations corresponding to one terminal, and It may be that a plurality of base stations correspond to a plurality of terminals.

As shown in FIG. 1, FIG. 1 is a schematic structural diagram of a network channel analog control apparatus according to an embodiment of the present invention, which may specifically include: a channel control unit 101, a channel processing unit 102, and a channel synthesizing unit 103.

The channel control unit 101 records channel characteristic data for a wireless network channel with interference between the input baseband and the output baseband. Specifically, the channel control unit 101 numbers the input baseband and the output baseband, and between the input baseband and the output baseband. a wireless network channel having interference, recording channel characteristic data of the wireless network channel at a corresponding position of a predetermined control structure table; for a wireless network channel having no interference between the input baseband and the output baseband, recording the advance in a predetermined control table The set identifier, such as 0 or other specific identifier.

The foregoing number may be obtained by mapping the ports of the network channel analog control device and the baseband in the port according to a predetermined rule, and the predetermined rule is not limited, and may be performed according to the actual situation of the wireless network channel or the habit of the technician. set up.

The above predetermined control structure table is composed of an output baseband and an input baseband as constituent lines and columns, respectively. The matrix is composed as shown in Table 1. The channel characteristic data is determined according to uplink and downlink, including: fading, channel correlation, noise, etc., which can generally be obtained by external real-time acquisition.

Table 1

The channel processing unit 102 performs channel processing on the input baseband data corresponding to the output baseband according to the channel characteristic data between the output baseband and the input baseband; the channel processing needs to be determined according to specific channel characteristic data, for example, if the channel If the feature data is a fading value, then the input baseband data is multiplied by its corresponding fading value.

The channel synthesizing unit 103 superimposes all the channel characteristic data processed by the channel corresponding to the output baseband, and the superposed data is sent to the output baseband.

For the specific implementation process of the above network channel analog control device, please refer to the detailed description of the method embodiment below.

Next, the method of the embodiment of the present invention will be described in detail with reference to FIG. 2 to FIG. First method embodiment

This embodiment is directed to a channel of a MIMO antenna system. As shown in FIG. 2, FIG. 2 is a schematic diagram of a MIMO wireless channel network in the embodiment, where one base station corresponds to one terminal. As shown in FIG. 3, FIG. 3 is a schematic diagram of a network channel analog control device connected in a MIMO wireless channel network according to the embodiment. The network channel analog control device is connected to the base station at one end and connected to the terminal at the other end, and is externally connected according to the network channel analog control device. The case will be entered with the baseband number in: idl, id2, and the output baseband numbered as out: idl, id2, where the data of the two output basebands will be sent to the terminal through the two antennas of the terminal.

As shown in FIG. 4, FIG. 4 is a schematic flowchart of the embodiment, which may specifically include the following steps: Step 401: Assuming that all four wireless network channels existing between the base station and the terminal have interference, the four wireless network channels are used. The corresponding channel characteristic data H11, H12, H21, H22 are respectively added to corresponding positions in the predetermined control structure table (see Table 2), and other places are added with 0 (other specific identification symbols may also be added);

Step 402: Perform channel processing on the two input baseband data corresponding to the baseband output baseband 1 (outidl) according to the channel characteristic data H11 and H12, and respectively input the two input baseband data corresponding to the output baseband 2 (out: id2) according to channel characteristics. Data H21, H22 perform channel processing; Step 403: Add two channels of data processed according to channel characteristic data H11, H21, and superimposed data is sent to an output baseband 1 corresponding to the terminal; The two data after the channel processing by the data H12 and H22 are superimposed, and the superimposed data is sent to the output baseband 2 corresponding to the terminal.

The terminal receives the superimposed data in step 403 through two antennas, and analyzes the data to know whether the base station product has a problem or not.

Here, the predetermined control structure table is as shown in Table 2, wherein the baseband id1 and the baseband id2 of the first column on the left side respectively indicate the input baseband 1 and the input baseband 2 of the base station 1; the baseband id and the baseband id2 of the first row respectively represent The output baseband 1 corresponding to the terminal outputs the baseband 2.

Table 2

Second method embodiment

This embodiment describes a radio network channel in which an interference channel and a MIMO channel coexist. As shown in FIG. 5, FIG. 5 is a schematic diagram of a wireless channel network in which interference and MIMO exist simultaneously in the embodiment, where two base stations (base station 1 and base station 2) correspond to one terminal. As shown in FIG. 6, FIG. 6 is a schematic diagram of a connection of a network channel analog control apparatus in a wireless channel network in which both interference and MIMO exist in the present embodiment, where one end of the network channel analog control device is connected to the base station 1 and the base station 2, and the other end is connected to the terminal. The input baseband is numbered as: idl, id2, id3, id4 according to the external connection of the network channel analog control device, wherein: in: idl, id2 respectively represent the input baseband 1, the input baseband 2, in: id3 of the base station 1, Id4 denotes the input baseband 1 and the input baseband 2 of the base station 2, respectively; the output basebands are numbered out: idl, id2, respectively representing the output baseband 1 and the output baseband 2 corresponding to the terminal, wherein the output baseband 1 and the input baseband 2 The data will be sent to the terminal through the two antennas of the terminal.

As shown in FIG. 7, FIG. 7 is a schematic flowchart of the embodiment, which may specifically include the following steps: Step 701: When there are interferences on eight wireless network channels existing between two base stations and terminals, the eight The channel characteristic data H11, H12, H21, H22, H13, H14, H23, H24 corresponding to the wireless network channel are respectively added to the corresponding positions in the predetermined control structure table (see Table 3), and other places are added 0 (may also add other Specific identifier);

Step 702: The base station 1 outputs two input baseband data corresponding to the baseband 1 according to the channel respectively. The feature data H11 and H12 perform channel processing, and perform channel processing on the two input baseband data corresponding to the baseband 1 output baseband 2 according to the channel characteristic data H21 and H22;

Step 703: Perform channel processing on the two input baseband data corresponding to the baseband 2 output baseband 1 according to the channel characteristic data HI3, H14, and output the two input baseband data corresponding to the baseband 2 output baseband 2 according to the channel characteristic data H23, H24, respectively. Perform channel processing;

Step 704: The four channels are added according to the channel characteristic data HI 1, HI 2, HI 3, and H14, and the superimposed data is sent to the output baseband 1 corresponding to the terminal. Step 705: The four channels are superimposed according to the channel characteristic data H21, H22, H23, and H24, and the superimposed data is sent to the output baseband 2 corresponding to the terminal.

The terminal receives the superimposed data in steps 704 and 705 through two antennas, and analyzes the data to know whether the two base station products have problems and which problems exist. Here, the predetermined control structure table is shown in Table 3, wherein the baseband id1 and the baseband id2 of the first column on the left side respectively indicate the input baseband 1 and the input baseband 2 of the base station 1, and the baseband id3 and baseband of the first column on the left side are transmitted. Id4 represents the input baseband 1 and the input baseband 2 of the base station 2; the baseband id1 and the baseband id2 of the first row respectively indicate the output baseband 1 and the output baseband 2 corresponding to the terminal.

Third method embodiment

This embodiment describes a wireless network channel in which an interference channel and a MIMO channel coexist. As shown in FIG. 8, FIG. 8 is a schematic diagram of a wireless channel network in which interference and MIMO exist simultaneously in the embodiment, where two base stations (base station 1, base station 2) correspond to two terminals (terminal 1, terminal 2). As shown in FIG. 9, FIG. 9 is a schematic diagram of a connection of a network channel analog control apparatus in a wireless channel network in which both interference and MIMO exist in the present embodiment, where one end of the network channel analog control device is connected to the base station 1 and the base station 2, and the other end is connected to the terminal. 1 and terminal 2, according to the network channel analog control device external connection, the input baseband number is in: idl, id2, id3, id4, wherein: in: idl, id2 respectively represent the baseband 1 of the base station 1, the input baseband 2, In: id3, id4 denotes the input baseband 1 and the input baseband 2 of the base station 2, respectively. The output baseband is numbered as out: idl, id2, id3, id4, where out: idl, id2 respectively represent the output baseband 1 and the output baseband 2 corresponding to the terminal 1, and the data thereof is transmitted to the terminal through the two antennas of the terminal 1. 1; out: id3, id4 respectively represent the output baseband 1 and the output baseband 2 corresponding to the terminal 2, and the data thereof will be transmitted to the terminal 2 through the two antennas of the terminal 2.

As shown in FIG. 10, FIG. 10 is a schematic flowchart of the embodiment, which may specifically include the following steps:

Step 1001: Among the 16 wireless network channels existing between the two base stations and the two terminals,

If the 12 wireless network channels have interference, the channel characteristic data H11, H12, H21, H22, H13, H14, H23, H24, H31, H32, H41, H42 of the 12 wireless network channels (base station 2 and terminal 2) The inter-radio network channel is not interfered with) added to the predetermined control structure table (see Table 4), and 0 is added elsewhere (other specific identifiers can also be added);

Step 1002: For the terminal 1, the two input baseband data corresponding to the base station 1 output baseband 1 are subjected to channel processing according to the channel characteristic data H11 and H12, respectively, and the two input baseband data corresponding to the base station 1 output baseband 2 are respectively according to the channel characteristic data. H21, H22 perform channel processing; Step 1003: Perform channel processing on the two input baseband data corresponding to the baseband 2 output baseband 1 according to the channel characteristic data H13, H14, respectively, and base the two input baseband data corresponding to the baseband 2 baseband 2 according to the channel Feature data H23, H24 perform channel processing; Step 1004: 4B adds four data after channel processing according to the channel characteristic data HI1, H12, H13, H14, and sends the superposed data to the output baseband 1 corresponding to the terminal 1; according to the channel characteristic data H21 The four data after channel processing by H22, H23, H24 are superimposed, and the superimposed data is sent to the output baseband 2 corresponding to the terminal 1;

Step 1005: For the terminal 2, the two input baseband data corresponding to the base station 2 output baseband 1 are subjected to channel processing according to the channel characteristic data H31 and H32, respectively, and the base station 2 outputs two input baseband data corresponding to the baseband 2 according to the channel characteristic data respectively. H41, H42 perform channel processing; Step 1006: Add two channels of data processed according to channel characteristic data H31, H32, and send the superposed data to the output baseband 1 corresponding to the terminal 2; H41 and H42 add two data after channel processing, and send the superimposed data to the output baseband 2 corresponding to the terminal 2.

Here, the predetermined control structure table is shown in Table 4, wherein the baseband id1 and the baseband id2 of the first column on the left side respectively indicate the input baseband 1 and the input baseband 2 of the base station 1, and the baseband id3 and the baseband id4 respectively represent the input of the base station 2. The baseband 1 and the input baseband 2; the baseband id1 and the baseband id2 of the first row respectively represent the output baseband 1 and the output baseband 2 corresponding to the terminal 1, the baseband id3 and the baseband id4 respectively representing the output baseband 1 and the output baseband 2 corresponding to the terminal 2 .

In summary, the embodiments of the present invention provide a wireless network channel analog control device and a function of the current simulation technology, including point-to-point channel simulation; Aspects can reproduce real-time, complex real-world network channel environments under multi-channel interaction, including MIMO channels, multi-cell interference channels, and the like.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A wireless network channel analog control device, comprising:

a channel control unit, configured to record channel characteristic data for a wireless network channel having interference between the input baseband and the output baseband;

The channel synthesizing unit is configured to superimpose all the data processed by the channel corresponding to the output baseband, and the superimposed data is sent to the output baseband.

2. Apparatus according to claim 1 wherein:

The channel control unit is configured to number the input baseband and the output baseband by using the output baseband and the input baseband as rows and columns of the matrix to form a predetermined control structure table; and interfering with the input baseband and the output baseband The wireless network channel records channel characteristic data of the wireless network channel at a corresponding position of the predetermined control structure table.

The device according to claim 2, wherein the channel control unit is further configured to: record, on a predetermined control structure table, a wireless network channel that does not interfere with the input baseband and the output baseband Pre-set identification symbol.

The method according to claim 2, wherein the number is mapped according to a predetermined rule by a sequence of a baseband and a baseband in the port of the network channel analog control device.

5. A network channel analog control method, comprising:

Performing channel processing on each input baseband data corresponding to the output baseband according to channel characteristic data between the output baseband and the input baseband;

6. The method according to claim 5, wherein the recording channel characteristic data of the wireless channel having interference between the input baseband and the output baseband comprises:

The input baseband and the output baseband are numbered, and the output baseband and the input baseband are respectively used as rows and columns of the matrix to form a predetermined control structure table; and the wireless network channel having interference between the input baseband and the output baseband is in predetermined control The channel characteristic data of the wireless network channel is recorded at a corresponding position of the structure table.

7. The method according to claim 6, further comprising:

For a wireless network channel that does not interfere with the input baseband and the output baseband, a predetermined identification symbol is recorded in a predetermined control table.