WO2012155699A1

WO2012155699A1 - Method and device for implementing multi-frequency point indoor wireless network channel

Info

Publication number: WO2012155699A1
Application number: PCT/CN2012/073211
Authority: WO
Inventors: 陈诗军
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-07-19
Filing date: 2012-03-28
Publication date: 2012-11-22
Also published as: CN102892126A; CN102892126B

Abstract

Disclosed are a method and device for implementing a multi-frequency point indoor wireless network channel. The method comprises: performing splitting, down-conversion processing, and channelization processing on a downlink radio frequency signal from a BBU, to obtain multiple channelized downlink base band signals; performing up-conversion and combining processing on the multiple channelized downlink base band signals, and then sending the processed signal to a UE; performing splitting, down-conversion processing, and channelization processing on an uplink radio frequency signal from the UE, to obtain multiple channelized uplink base band signals; and performing up-conversion and combining processing on the multiple channelized uplink base band signals, and then sending the processed signal to the BBU. The present invention not only can implement existing functions of a channel simulator but also can reproduce a real-time complex actual network channel environment under the multi-frequency point and multi-channel effect.

Description

Method and device for realizing multi-frequency indoor wireless network channel

The present invention relates to a wireless network channel simulation technology in the field of wireless communication, and more particularly to a method and apparatus for implementing a multi-frequency indoor wireless network channel. Background technique

The propagation of radio waves in a wireless channel is not a single path, but a synthesis of many reflected waves from many paths. Since the distances of the electric waves passing through the respective paths are different, the arrival times of the reflected waves from the respective paths are different, that is, the delays of the signals are different. When the transmitting end sends a very narrow pulse signal, the signal received by the mobile station is composed of many pulses of different delays, called delay spread.

At the same time, since the arrival time of the reflected waves from each path is different, the phase is different, and multiple signals of different phases are superimposed at the receiving end, sometimes the signal is strengthened after the superposition (the direction is the same), and sometimes the signal is weakened after the superposition (the opposite direction) ). Thus, the amplitude of the received signal will change drastically, i.e., fast fading occurs, which is caused by multiple paths, called multipath fading.

In addition, in addition to the fast fading of the received signal, the median field value (average value) also changes slowly. This change is mainly caused by the change of the regional position and the change of meteorological conditions. As time changes, the signal delay of multipath propagation to a fixed reception point changes. This change in signal caused by shadowing and meteorological causes is called slow fading.

Due to the mobility of the mobile station in mobile communication, there is also a Doppler effect in the wireless channel. When the mobile station moves to the base station, the frequency becomes higher, and when it is far away from the base station, the frequency becomes lower. The Doppler effect further increases the complexity of mobile communications.

The wireless channel characteristics described above, including multipath propagation, delay spread, fading characteristics, and Doppler effect, are point-to-point wireless channels. In cellular mobile communication, the terminal sends out In addition to being received by the serving base station, the signal is also received by a plurality of neighboring base stations adjacent to the serving base station, and constitutes uplink channel interference of the neighboring base station (the terminal to the base station's wireless channel is generally referred to as an uplink channel, and the base station to the terminal's wireless channel. Similarly, the downlink channel is transmitted; in addition, the signal transmitted by the base station is received by the terminal in the service area, and is also received by the terminal in the neighboring area, thus constituting the downlink channel interference of the neighboring terminal. Such a point-to-multipoint, multi-point to point wireless channel environment in a cellular wireless communication system is called a wireless network channel. In addition to changes in the geographical environment and movement speed of the communication network, the wireless network channel has a close relationship with the cellular network topology.

The complexity, diversity, and time-varying of wireless network channels pose significant difficulties for wireless base station system design and system parameter configuration. Usually, even if the wireless base station system passes the laboratory system test, it is difficult to predict the system performance in the wireless network environment before the batch application. The system test environment built in the lab usually only supports point-to-point function and performance verification, that is, it only has wireless channel simulation capability and does not have wireless network channel simulation capability. It is precisely because the laboratory system test can not describe 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 in the base station system, but commercial experiments. The bureau needs to invest huge sums of money and it takes a long time to build and open.

The development of wireless technology requires that while the transmission capacity is rapidly increased, the spectrum utilization rate is continuously increased, and the high rate, large capacity, and high quality of communication are realized on a limited spectrum. At present, MIMO technology, COMP technology, RELAY technology, carrier aggregation, and large bandwidth have become hotspots in new technologies. Wireless simulation technology plays an important role in wireless technology research and wireless system development. The complexity of wireless system development and wireless technology research is much higher than that of wired systems. This is mainly due to the fact that the wireless environment has greatly increased the complexity of wireless systems due to changes in time, location, geographical environment, weather environment, mobility, and interference. Wireless products must consider the impact of these factors, such as multipath, fading, channel correlation, noise, interference, and so on.

Wireless communication technology is developing rapidly, new technologies are emerging, and channel simulation technology needs to be adapted. The need for new technology research and research and development. At present, the wireless channel simulation technology mainly has soft simulation technology and channel simulator technology.

Soft simulation technology: Wireless modeling by tools such as MATLAB, output simulation results, generally running in PC; soft simulation technology is generally used for offline, non-real-time simulation.

Channel Simulator: Wireless modeling through embedded systems, real-time application of channel data generated by modeling to actual baseband data. The channel simulator needs to be designed and developed to implement a new hardware system that enables point-to-point real-time channel simulation.

In order to improve the coverage of system testing, how to establish a wireless network channel simulation environment in the laboratory and fully expose the problems in the base station system products has become a key issue to be solved urgently. Summary of the invention

The object of the present invention is to provide a method and a device for implementing a multi-frequency indoor wireless network channel, which can not only realize the functions of the current simulation technology, but also can reproduce multi-frequency, multi-channel interaction, real-time and complex reality. Network channel environment.

According to an aspect of the present invention, the present invention provides a method for implementing a multi-frequency indoor wireless network channel, the method comprising:

The downlink radio frequency signal from the baseband processing unit BBU is shunted, down-converted, and channelized to obtain a multi-channelized downlink baseband signal;

Performing up-conversion and combining processing on the multi-channelized downlink baseband signal, and transmitting the signal to the user equipment UE;

The uplink radio frequency signal from the UE is shunted, down-converted, and channelized to obtain a multi-channelized uplink baseband signal;

After performing the up-conversion and combining processing on the multi-channelized uplink baseband signal, the multi-channelized uplink baseband signal is sent to the BBU.

Preferably, the method further includes: calculating, according to a frequency point configuration of the BBU and the UE, a received power of the BBU or the UE at different frequency points; dividing the received power by a predetermined power to obtain a BBU Or a scaling factor of different frequency points of the UE, and generating a calibration script; acquiring a time channel sequence between the BBU and the UE according to a frequency point configuration of the BBU and the UE, and using the scaling script to use the time channel The sequence is subjected to scaling processing to generate a channel script; the calibration script and the channel script are sent to a network channel generation module for channelization processing.

Preferably, the script management module virtualizes the BBU or the UE into multiple BBUs or UEs according to the frequency point configuration of each BBU and the UE. When the BBU or the UE supports multiple frequency sharing antennas, the BBU or the UE is directly mapped to multiple BBUs or UEs. Corresponding to a specific BBU or UE;

The script management module calculates the sum of the received powers of the BBUs or the UEs, calculates the ratio of the sum of the received powers of the frequency points and the predetermined power, obtains the scaling factor of the different frequency points of the BBU or the UE, and generates a calibration script. Sending to the network channel generating module, where the receiving power of the BBU or the UE is zero if the frequency points between the BBU or the UE are inconsistent;

The script management module is configured according to the BBU or the UE frequency. When the frequency between the BBU and the UE is inconsistent, the time channel sequence between the BBU and the UE is 0. When the frequency configuration between the BBU and the UE is the same, the BBU and the BBU are The time channel sequence between the UEs is a time channel data sequence in the external field acquisition channel file, and the time channel sequence is subjected to scaling processing to form a channel script, which is sent to the network channel generation module.

Preferably, the obtaining the multi-channel downlink downlink baseband signal comprises: splitting and down-converting the downlink radio frequency signal from the BBU according to the frequency point configuration of the BBU, to obtain a multi-channel downlink baseband signal; The downlink baseband signal is channelized to obtain a multichannel channelized downlink baseband signal.

Preferably, the channelizing processing the multi-channel downlink baseband signal is: performing channel synthesis, signal superposition, and scaling processing on the multiple downlink baseband signals by using the channel script and the calibration script, and obtaining The channel channelizes the downlink baseband signal.

Preferably, after the multi-channelized downlink baseband signal is up-converted and combined, the method is sent to the UE, where: the multi-channel channelized downlink baseband is configured according to a frequency point configuration of the UE. The signal is up-converted to different frequency points of the UE to obtain a multi-channel channelized downlink radio frequency signal; the multi-channel channelized downlink radio frequency signal is combined and sent to the UE.

Preferably, the obtaining the multi-channelized uplink baseband signal comprises: splitting and down-converting the uplink radio frequency signal from the UE according to the frequency point configuration of the UE, to obtain multiple uplink baseband signals; The baseband signal is channelized to obtain a multichannel channelized uplink baseband signal.

Preferably, the channelizing processing the multiple uplink baseband signals is: performing channel synthesis, signal superposition, and scaling processing on the multiple uplink baseband signals by using the channel script and the calibration script, and obtaining The channel channelizes the downlink baseband signal.

Preferably, after the multi-channelized uplink baseband signal is up-converted and combined, the method is sent to the BBU, and the method includes: up-converting the multi-channelized uplink baseband signal to the BBU according to a frequency point configuration of the BBU. The multi-channelized uplink RF signal is obtained at different frequency points of the BBU; and the multi-channelized uplink RF signal is combined and sent to the BBU.

According to another aspect of the present invention, the present invention further provides a multi-frequency indoor wireless network channel implementation apparatus, the apparatus comprising:

The first combined/divided radio unit connected to the BBU is configured to split and down-convert the downlink radio frequency signal from the BBU, and perform up-conversion and combining processing on the multi-channelized uplink baseband signal, and then send the signal to the BBU. If the BBU supports multiple frequency points, there are multiple baseband connections between the first combined/divided radio frequency unit and the network channel generating module.

The second combining/splitting radio unit connected to the UE is configured to perform uplinking and combining processing on the multi-channelized downlink baseband signal, and then send the uplink radio frequency signal to the UE, and perform uplink and downlink processing on the uplink radio frequency signal from the UE. If the UE supports multiple frequency points to share a set of antennas, there are multiple baseband connections between the second combined/divided radio frequency unit and the network channel generating module.

The network channel generating module is configured to perform channelization processing to obtain a multi-channelized downlink baseband signal or a multi-channelized uplink baseband signal. Preferably, the device further includes: a script management module, configured to generate a calibration script and a channel script according to a frequency point configuration of the BBU and the UE, and send the solution to the network channel generation module for channelization processing.

Compared with the prior art, the beneficial effects of the invention are:

1. The present invention is capable of reproducing a multi-frequency external field channel, that is, establishing a multi-station, multi-terminal network channel environment in the same manner as an external field, and completing a channel for a baseband signal by using a calibration script and a channel script generated by a script management module. Simulation processing

2. The channel script can flexibly implement the channel environment in the multi-frequency wireless network channel environment, the network edge and the like, and can be used for product verification, accelerate product failure convergence, and shorten the time required for product stability;

3. The present invention does not limit the number of frequency points of the BBU and the UE, and the number of frequency points supported by the BBU and the UE may be the same or different, and the channelization processing can be compatible with the case where multiple frequency points coexist at the same time;

4. The invention supports a multi-frequency shared antenna mode and also supports a multi-frequency independent antenna mode. DRAWINGS

Figure la is a flowchart of downlink radio frequency signal processing of a multi-frequency indoor wireless network channel provided by the present invention;

FIG. 1b is a flow chart of processing an uplink radio frequency signal of a multi-frequency indoor wireless network channel provided by the present invention;

2 is a structural diagram of a multi-frequency indoor wireless network channel implementation device according to the present invention; FIG. 3 is a schematic diagram of a multi-frequency indoor wireless network channel implementation scenario according to an embodiment of the present invention; A multi-frequency indoor wireless network channel implementation device structure diagram; FIG. 5 is a calibration script diagram of a calibration sample provided by an embodiment of the present invention;

FIG. 6 is a channel script diagram of a channel sample according to an 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.

A method for implementing a multi-frequency indoor wireless network channel includes downlink RF signal processing as shown in FIG. 1a, and uplink RF signal processing as shown in FIG.

As shown in FIG. la, the downlink radio frequency signal processing includes:

In step 101a, the downlink radio frequency signal from the BBU is shunted, down-converted, and channelized to obtain a multi-channelized downlink baseband signal.

Specifically, the first combining/splitting radio frequency unit connected to the BBU performs branching and down-conversion processing on the downlink radio frequency signal from the BBU according to the frequency point configuration of the BBU to obtain a multi-channel downlink baseband signal; The multi-channel downlink baseband signal is channelized to obtain a multi-channelized downlink baseband signal.

In the process of processing the downlink radio frequency signal, the channelization processing step is specifically: the network channel generation module performs channel synthesis, signal superposition, and calibration processing on the multi-channel downlink baseband signal by using a channel script and a calibration script, and obtains more The channel channelizes the downlink baseband signal.

Step 102a: Perform the up-conversion and combined processing on the multi-channelized downlink baseband signal, and then send the signal to the UE.

Further, the second combining/splitting radio unit connected to the UE up-converts the multi-channelized downlink baseband signal to different frequency points of the UE according to the frequency point configuration of the UE, to obtain a multi-channel channelized downlink radio frequency signal; The multi-channelized downlink radio frequency signal is combined and sent to the UE.

As shown in FIG. 1b, the uplink radio frequency signal processing includes:

In step 101b, the uplink radio frequency signal from the UE is split, down-converted, and channelized to obtain a multi-channelized uplink baseband signal.

Further, the second combining/splitting radio frequency unit performs branching and down-conversion processing on the uplink radio frequency signal from the UE according to the frequency point configuration of the UE, to obtain multiple uplink baseband signals; The generating module performs channelization processing on the multiple uplink baseband signals to obtain a multi-channelized uplink baseband signal.

In the process of processing the uplink RF signal, the channelization processing step is specifically: the network channel generation module performs channel synthesis, signal superposition, and scaling processing on the multiple uplink baseband signals by using a channel script and a calibration script to obtain multiple channels. Downlink baseband signal.

In step 102b, the multi-channelized uplink baseband signal is up-converted and combined, and then sent to the BBU.

Further, the first combining/splitting radio frequency unit up-converts the multi-channelized uplink baseband signal to different frequency points of the BBU according to the frequency point configuration of the BBU, to obtain a multi-channel channelized uplink radio frequency signal; After the channelized uplink RF signal is combined, it is sent to the BBU.

The method further includes: the script management module calculates the received power of the BBU or the UE at different frequency points according to the frequency allocation configuration of the BBU and the UE; and divides the received power by a predetermined power to obtain a different frequency of the BBU or the UE. a scaling factor, and generating the calibration script; acquiring a time channel sequence between the BBU and the UE according to a frequency point configuration of the BBU and the UE, and performing calibration processing on the time channel sequence by using the calibration script, Generating the channel script; transmitting the calibration script and the channel script to a network channel generation module for channelization processing.

The figure shows a composition structure of a multi-frequency indoor wireless network channel implementation device provided by the present invention. As shown in FIG. 2, the device includes:

The first combined/divided radio unit connected to the BBU is configured to split and down-convert the downlink radio frequency signal from the BBU in the downlink radio frequency signal processing, and multi-channelize the uplink in the uplink radio frequency signal processing. After the baseband signal is upconverted and combined, it is sent to the BBU;

The second combining/splitting radio unit connected to the UE is configured to perform uplinking and combining processing on the multi-channelized downlink baseband signal in the downlink radio frequency signal processing, and then send the signal to the UE, and in the uplink radio frequency signal processing, The uplink radio frequency signal from the UE is subjected to shunting and downconversion processing;

a network channel generating module, configured to perform channelization processing, and obtain a multi-channel channelized downlink baseband Signal or multiplex channelized uplink baseband signals.

Here, the apparatus may further include: a script management module, configured to generate a calibration script and a channel script according to a frequency point configuration of the BBU and the UE, and send the calibration script and the channel script to a network channel generation module For channelization processing.

The working principle of the apparatus for implementing a multi-frequency indoor wireless network channel is as follows: If the BBU supports multiple frequency points, there are multiple baseband connections between the first combined/divided radio unit and the network channel generating module. If the UE supports multiple frequency points to share a set of antennas, there are multiple baseband connections between the second/split radio unit and the network channel generating module.

If the BBU or the UE supports multiple frequency-sharing antennas, it is virtualized into multiple BBUs or UEs. Otherwise, the BBU or UE-frequency points directly correspond to a specific BBU or UE.

For the downstream channel:

The script management module configures the frequency of each BBU and the UE. If the frequency between the BBU and the UE is inconsistent, the UE receives power as 0. Calculate the sum of all received powers of the UE frequency point 1, calculate the ratio of the predetermined power, obtain the scaling factor of the UE frequency point 1 (the calibration script sequence), calculate the scaling factor of the other frequency points of the UE, and then continue to calculate The calibration factors of other UEs are generated and sent to the network channel generation module.

The script management module is configured according to the frequency of each BBU and the UE. If the frequency points between the BBU and the UE are inconsistent, the time channel sequence between the BBU and the UE is written as a 0 sequence (or other feature symbol), if between the BBU and the UE. The frequency channel configuration is the same, and the time channel sequence between the two is a time channel data sequence in the external field acquisition channel file; the time channel sequence is scaled by using a scaling factor in the calibration script to generate The channel script is sent to the network channel generation module.

The first combining/splitting radio frequency unit performs branching and down-conversion processing on the downlink radio frequency signal from the BBU according to the frequency point configuration of the BBU, and obtains multiple downlink baseband signals consistent with the number of BBU frequency points to be input to the network channel generating module. . The network channel generating module performs channel synthesis, signal superposition, and scaling processing on the input multiple downlink baseband signals according to the calibration script and the channel script, to obtain a multi-channelized downlink baseband signal.

The second combining/splitting radio frequency unit up-converts the multi-channelized downlink baseband signals to different frequency points of the UE according to the frequency point configuration, and if the receiving antenna of the UE is a multi-frequency point shared antenna, the up-converted processing is performed. After the signals are superimposed, they are sent to the UE. If the receiving antenna of the UE is a multi-frequency independent antenna, it is directly sent to the UE.

For the upstream channel:

The script management module is configured according to the frequency of each BBU and the UE. If the frequency between the BBU and the UE is inconsistent, the received power of the BBU is recorded as 0. Calculate the sum of all received powers of the BBU frequency point 1, calculate the ratio of the predetermined power, obtain the scaling factor of the BBU frequency point 1 (the calibration script sequence), calculate the scaling factor of the other frequency points of the BBU, and then continue to calculate The calibration factors of other BBUs are generated and sent to the network channel generation module.

The second combining/splitting radio frequency unit performs branching and down-conversion processing on the uplink radio frequency signal from the UE according to the frequency point configuration of the UE, and obtains multiple uplink baseband signals that are consistent with the number of UE frequency points to be input to the network channel generating module.

The network channel generating module performs channel synthesis, signal superposition, and scaling processing on the input multiple uplink baseband signals according to the calibration script and the channel script to obtain a multi-channelized uplink baseband signal.

The first combining/splitting radio unit up-converts the multi-channelized uplink baseband signals to different frequency points of the BBU according to the frequency point configuration, and if the receiving antenna of the BBU is a multi-frequency point shared antenna, After the upconverted signal is superimposed, the signal is sent to the BBU. If the receiving antenna of the BBU is a multi-frequency independent antenna, it is directly sent to the BBU.

In order to clarify the inventive concept of the present invention, the following channel is taken as an example, that is, a process in which a BBU sends a downlink radio frequency signal to a UE after channelization processing, and is described as an example in conjunction with FIG. 3, FIG. 4, FIG. 5, and FIG. .

FIG. 3 is a schematic diagram showing the implementation of a multi-frequency indoor wireless network channel according to an embodiment of the present invention, as shown in FIG. 3:

BBU_1 supports two frequency points, which are transmitted for two antennas, and the multi-frequency point shares the antenna mode.

BBU_2 supports 1 frequency point and is sent for two antennas.

The UE supports two frequency points, which are received by two antennas, and the multi-frequency point shares the antenna mode.

FIG. 4 is a structural diagram showing a device for implementing a multi-frequency indoor wireless network channel according to an embodiment of the present invention. As shown in FIG. 4, the device is composed of the following components:

a script management module, configured to mainly perform external channel processing, generate channel scripts and calibration scripts;

And a network channel generating module, configured to perform channel processing, interference channel superposition, and scaling processing on the input multiple uplink baseband signals or the multiple downlink baseband signals according to the channel script and the calibration script.

The first combined/divided radio frequency unit module is configured to split and down-convert the downlink radio frequency signal sent by the BBU during processing of the downlink radio frequency signal to form a multi-channel downlink baseband signal of each frequency point of the BBU, and process During the uplink RF signal process, the multi-channelized uplink baseband signals processed by the network channel generation module are up-converted and combined and sent to the BBU.

The second combined/divided radio frequency unit module is configured to split and down-convert the uplink radio frequency signal sent by the UE during processing of the uplink radio frequency signal to form multiple uplink baseband signals of each frequency point of the UE, and process During the downlink radio frequency signal, the multi-channel channelized downlink baseband signal processed by the network channel generating module is up-converted and combined and sent to the UE. For the downlink channel, the processing steps of the device for the downlink radio frequency signal include: Step 1: BBU_1 supports two frequency points, and then there are two basebands between the first combining/splitting radio unit connected to BBU_1 and the network channel generating module. Connection; BBU_2 supports 1 frequency point, then there is a baseband connection between the first combining/splitting radio unit connected to BBU_2 and the network channel generating module. The UE supports two frequency points, and there are two baseband connections between the second combining/splitting radio unit module and the network channel generating module connected to the UE.

Step 2: The script management module generates a calibration P book and a channel P according to the frequency configuration of the BBU_1, BBU_2, and UE.

Further, for the downlink channel, BBU_1 supports two frequency points, and then virtualizes into two BBUs; if BBU_2 supports one frequency point, it is virtualized into one BBU; if the UE supports two frequency points, it virtualizes into two UEs. If the frequency points between the BBU and the UE are inconsistent, the received power of the UE is taken as 0. Calculating the sum of all received powers of the UE frequency point 1 (the UE receives the received power of the BBU_1 frequency point 2 as 0, and only calculates the sum of the received power of the UE to the BBU_2 frequency point 1;), sets the predetermined power as the external field channel. The maximum transmit power of the BBU_1 and the BBU_2 is calculated, and the ratio of the sum of all received powers of the frequency point 1 to the predetermined power is calculated, and the scaling factor of the UE frequency point 1 is obtained. Similarly, the scaling factor of the UE frequency point 2 can be continuously calculated, and the sum of all received powers of the UE frequency point 2 can be calculated (the UE receives the received power of the BBU_1 frequency point 1 and the BBU_2 frequency point 1 as 0, and only calculates the UE to BBU_1. The received power of the frequency point 2 can be;), the predetermined power is set as the transmission power of the BBU_1 frequency point 2 in the external field channel, and the ratio of all received powers to the predetermined power of the frequency point 2 is calculated, and the scaling factor of the UE frequency point 2 is obtained. The resulting calibration script is shown in Figure 5 and sent to the network channel generation module.

BBU_1 supports two frequency points, and then virtualizes into two BBUs. The baseband numbers corresponding to the two antennas corresponding to frequency point 1 are BBU_1 frequency baseband 1-idl, BBU_1 frequency baseband l-id2; frequency point 2 corresponds The baseband numbers of the two antennas are BBU_1 frequency baseband 2-idl and BBU_1 frequency baseband 2-id2. BBU_2 supports 1 frequency point, then it is virtualized into 1 BBU, and the corresponding one The baseband number of the antenna is BBU_2 frequency baseband 1-idl, BBU_2 frequency baseband l-id2. The UE supports two frequency points, and then virtualizes into two UEs. The baseband numbers of the two antennas corresponding to the frequency point 1 are respectively the UE frequency baseband 1-1, the UE frequency baseband 1-2, and the frequency point 2 corresponding to the 2 The baseband numbers of the antennas are respectively the UE frequency baseband 2-1 and the UE frequency baseband 2-2. UE frequency baseband 1 (including UE frequency baseband 1-1 and UE frequency baseband 1-2) and BBU_2 frequency baseband 1 (including BBU_2 frequency baseband 1-idl and BBU_2 frequency baseband l-id2), BBU_1 frequency Point baseband 1 (including BBU_1 frequency baseband 1-idl and BBU_1 frequency baseband l-id2) has the same frequency configuration, so UE frequency baseband 1 and BBU_2 frequency baseband 1 and UE frequency baseband 1 and BBU_1 frequency The time channel sequence between the point basebands 1 is a time channel data sequence in the outer field acquisition channel file. The frequency of the baseband baseband 2 (including the UE frequency baseband 2-1 and the UE frequency baseband 2-2) and the BBU_1 frequency baseband 2 (including the BBU_1 frequency baseband 2-idl and the BBU_1 frequency baseband 2-id2) The configuration is the same, so the time channel sequence between the UE1 frequency baseband 2 and the BBU_1 frequency baseband 2 is the time channel data sequence in the external field acquisition channel file. Other frequency points are inconsistent, and the time channel sequence is 0 sequence. Using the calibration script, the channel under each time, the same UE or the BBU is uniformly scaled, that is, the time channel sequence is amplified by using a scaling factor in the calibration script, and finally the channel is generated. The script is sent to the network channel generation module. The channel script diagram is shown in Figure 6.

Step 3: The first combined/divided RF unit connected to BBU_1 performs down-conversion processing according to the frequency allocation of BBU_1, and is divided into frequency-base 1 baseband signals, that is, BBU_1 frequency baseband 1-idl and BBU_1 frequency baseband l-id2 At the same time, it is divided into frequency base 2 baseband signals, that is, BBU_1 frequency baseband 2-idl, BBU_1 frequency baseband 2-id2, and input to the network channel generation module. The first combined/divided RF unit connected to BBU_2 is down-converted according to the frequency configuration of BBU_2, and is divided into frequency-base 1 baseband signals, that is, BBU_2 frequency baseband 1-idl, BBU_2 frequency baseband l-id2, input to the network. Channel generation module.

In the fourth step, the network channel generating module inputs the 6 downlink downlink baseband signals according to the channel script. Number for channel synthesis and signal superposition processing:

Channel synthesis of the BBU_1 frequency baseband 1-idl according to the channel value H011-1 in the channel script;

According to the channel value H012-1 in the channel script, the BBU_1 frequency baseband l-id2 is channel-matched A;

Perform channel synthesis on the BBU_2 frequency baseband 1-idl according to the channel value H111-1 in the channel script;

Channel synthesis of the BBU_2 frequency baseband l-id2 according to the channel value H112-1 in the channel script;

After the above four channels synthesized by the channel are subjected to signal superposition and scaling processing, the UE frequency baseband 1-1 is obtained.

Perform channel synthesis on the BBU_1 frequency baseband 1-idl according to the channel value H021-1 in the channel script;

Perform channel synthesis on the BBU_1 frequency baseband l-id2 according to the channel value H022-1 in the channel script;

Channel synthesis of the BBU_2 frequency baseband 1-idl according to the channel value H121-1 in the channel script;

Perform channel synthesis on the BBU_2 frequency baseband l-id2 according to the channel value H122-1 in the channel script;

After the above four channels synthesized by the channel are subjected to signal superposition and scaling processing, the UE frequency baseband 1-2 is obtained.

Perform channel synthesis on the BBU_1 frequency baseband 2-idl according to the channel value H011-2 in the channel script;

Perform channel synthesis on the BBU_1 frequency baseband 2-id2 according to the channel value H012-2 in the channel script; After the signals synthesized by the above two channels are superimposed and scaled, the UE frequency baseband 2-1 is obtained.

Perform channel synthesis on the BBU_1 frequency baseband 2-idl according to the channel value H021-2 in the channel script;

Perform channel synthesis on the BBU_1 frequency baseband 2-id2 according to the channel value H022-2 in the channel script;

After the above two channels synthesized by the channel are subjected to signal superposition and scaling processing, the UE frequency baseband 2-2 is obtained.

The step of the scaling process is specifically: the network channel generating module performs scaling processing on the signal obtained by superimposing the signals according to the scaling factor in the calibration script, that is, after the signal is superimposed by using the scaling factor in the calibration script The obtained signal is subjected to a reduction (reduction) process to obtain a 4-channel channelized downlink baseband signal.

In the fifth step, the second combining/splitting radio unit connected to the UE performs up-conversion and combining processing on the four channelized downlink baseband signals according to the frequency point configuration of the UE:

The second combining/splitting radio unit upconverts the UE frequency baseband 1-1 to the UE frequency 1;

The second combining/splitting radio unit upconverts the UE frequency baseband 2-1 to the UE frequency point 2;

The above two channelized downlink radio signals are superimposed and sent to the first receiving antenna of the UE.

The second combining/splitting radio unit upconverts the UE frequency baseband 1-2 to the UE frequency 1;

The second combining/splitting radio unit upconverts the UE frequency baseband 2-2 to the UE frequency point 2;

The above two channelized downlink radio signals are superimposed and sent to the second receiving antenna of the UE.

Although the invention has been described in detail above, the invention is not limited thereto, and various modifications may be made by those skilled in the art in accordance with the principles of the invention. Therefore, modifications made in accordance with the principles of the present invention should be construed as falling within the scope of the present invention.

Claims

Claim

A method for implementing a multi-frequency indoor wireless network channel, wherein the method comprises:

The method according to claim 1, wherein the method further comprises: calculating, according to a frequency point configuration of the BBU and the UE, a received power of the BBU or the UE at different frequency points; dividing the received power by Predetermining the power, obtaining a scaling factor of different frequency points of the BBU or the UE, and generating a calibration script;

Obtaining a time channel sequence between the BBU and the UE according to a frequency point configuration of the BBU and the UE, and performing calibration processing on the time channel sequence by using the calibration script to generate a channel script; The channel script is sent to a network channel generation module for channelization processing.

3. The method according to claim 2, wherein

The script management module virtualizes the BBU or the UE into multiple BBUs or UEs according to the frequency point configuration of each BBU and the UE. When the BBU or the UE supports multiple frequency sharing antennas, the BBU or the UE directly corresponds to the specific BBU. Or UE;

The script management module calculates the sum of the received powers of the BBU or the UE, calculates the ratio of the sum of the received power of each frequency point and the predetermined power, and obtains the calibration factor of the different frequency points of the BBU or the UE. And generating a calibration script, and sending the calibration script to the network channel generation module, where if the frequency points between the BBU or the UE are inconsistent, the received power of the BBU or the UE is zero;

The implementation method of claim 1, wherein the obtaining the multi-channelized downlink baseband signal comprises: splitting and down-converting the downlink radio frequency signal from the BBU according to the frequency point configuration of the BBU, Obtaining a plurality of downlink baseband signals; performing channelization processing on the multiple downlink baseband signals to obtain a multichannel channelized downlink baseband signal.

The implementation method according to claim 4, wherein the channelizing the multi-channel downlink baseband signal is: performing, by using the channel script and the calibration script, the multi-channel downlink baseband signal Channel synthesis, signal superposition, and scaling processing result in multi-channelized downlink baseband signals.

The implementation method according to claim 1, wherein the transmitting, by the up-converting and combining, the multi-channel downlink sub-baseband signal to the UE comprises:

Up-converting the multi-channelized downlink baseband signal to different frequency points of the UE according to a frequency point configuration of the UE, to obtain a multi-channel channelized downlink radio frequency signal;

After the multi-channelized downlink radio frequency signals are combined and processed, they are sent to the UE.

The method according to claim 1, wherein the obtaining the multi-channelized uplink baseband signal comprises:

According to the frequency point configuration of the UE, the uplink radio frequency signal from the UE is split and down-converted to obtain a multi-channel uplink baseband signal; and the multi-channel uplink baseband signal is channelized to obtain a multi-channelized uplink baseband signal. .

The implementation method according to claim 7, wherein the channeling processing the multiple uplink baseband signals is: performing, by using the channel script and the calibration script, the multiple uplink baseband signals Channel synthesis, signal superposition, and scaling processing result in multi-channelized downlink baseband signals.

The implementation method of claim 1, wherein the transmitting the multi-channel channelized uplink baseband signal to the BBU after performing up-conversion and combining processing comprises:

Up-converting the multi-channelized uplink baseband signal to different frequency points of the BBU according to a frequency point configuration of the BBU, to obtain a multi-channelized uplink RF signal;

The multi-channelized uplink RF signal is combined and sent to the BBU.

A device for implementing a multi-frequency indoor wireless network channel, wherein the device comprises:

The first combining/splitting radio frequency unit of the baseband processing unit BBU is configured to perform branching and down-conversion processing on the downlink radio frequency signal from the BBU, and perform uplinking and combining processing on the multi-channelized uplink baseband signal to be sent to BBU;

a second combining/splitting radio unit connected to the user equipment UE, configured to perform uplinking and combining processing on the multi-channelized downlink baseband signal, and then transmitting the uplink radio frequency signal to the UE, and performing uplink and downlink processing on the uplink radio frequency signal from the UE. ;

The network channel generating module is configured to perform channelization processing to obtain a multi-channelized downlink baseband signal or a multi-channelized uplink baseband signal.

The device according to claim 10, further comprising: a script management module, configured to generate a calibration script and a channel script according to a frequency allocation configuration of the BBU and the UE, and send the method to the A network channel generation module for channelization processing.