WO2018098637A1

WO2018098637A1 - Transmitting device and base station

Info

Publication number: WO2018098637A1
Application number: PCT/CN2016/107752
Authority: WO
Inventors: 蒋亚军
Original assignee: 华为技术有限公司
Priority date: 2016-11-29
Filing date: 2016-11-29
Publication date: 2018-06-07
Also published as: CN109952717A; CN109952717B

Abstract

A transmitting device and a base station, used to increase communication efficiency. The transmitting device comprises at least two signal processing subsystems and a transmitting subsystem; each signal processing subsystem comprises a signal generating unit for generating a signal, wherein the at least two signal processing subsystems are used to transmit beams in at least two spatial directions by means of the transmitting subsystem, and beams in different spatial directions occupy different frequency domain positions.

Description

Transmitting device and base station

Technical field

The embodiments of the present invention relate to the field of mobile communications technologies, and in particular, to a transmitting device and a base station.

Background technique

After the Long Term Evolution (LTE) technology matures, the fifth-generation terrestrial wireless communication system (5G) has now begun to be studied. In a 5G system, the typical technique used by a base station is to use a larger bandwidth on a high frequency band. Among them, the high frequency band generally refers to the frequency band with a frequency greater than 6 GHz, and the corresponding low frequency band generally refers to the frequency band with a frequency less than 3 GHz.

The spatial propagation loss in the high frequency band is much larger than the low frequency band in the existing communication network, and the efficiency of the high frequency power amplifier is also low. These reasons all cause the high frequency base station to fail to transmit the entire wide beam by transmitting the same wide beam as the existing communication network. Coverage of the community. Therefore, another typical technique used by the high-frequency base station in the 5G system is to use a large-scale antenna array to generate a narrow beam covering the entire frequency band, and to utilize the high gain of the narrow beam to resist the spatial propagation loss.

For a base station that generates a narrow beam, the 802.3ad protocol stipulates that a beam scanning method can be adopted, that is, both the base station and the terminal device generate a narrow beam, and both sides align the two narrow beams by periodically scanning the entire cell. Communication can be performed when the narrow beam is aligned. The process of scanning and aligning takes a lot of time. During this period, neither party can obtain the signal of the other party and cannot establish a communication connection, which wastes communication resources and reduces the efficiency of communication.

Summary of the invention

The embodiment of the invention provides a transmitting device and a base station for improving communication efficiency.

In a first aspect, a transmitting device is provided, the transmitting device comprising at least two signal processing subsystems and a transmitting subsystem, wherein each signal processing subsystem comprises a signal generating unit for generating a signal. At least two signal processing subsystems are configured to transmit beams in at least two spatial directions through the transmitting subsystem, and the frequency domain positions occupied by the beams in different spatial directions are different.

The transmitting device in the embodiment of the present invention includes at least two transmitting subsystems, wherein each of the launchers The system can generate beams, and at least two transmitting subsystems can transmit beams in at least two spatial directions, and different beams occupy different frequency domain positions, so that the transmitting device can transmit in multiple directions simultaneously with limited power of the transmitting device. Multiple beams to improve scan coverage. If the transmitting device is used in the base station, the terminal devices in all directions in the cell can be aligned with the base station in time to establish a communication connection, save communication resources, and improve communication efficiency.

In conjunction with the first aspect, in a first possible implementation of the first aspect, each of the signal processing subsystems further includes a frequency domain processing unit and a beam processing unit. The frequency domain processing unit is configured to receive a signal generated by the signal generating unit and allocate a frequency domain position for the signal. The signals processed by the frequency domain processing unit in different transmitting subsystems occupy different frequency domain positions. The beam processing unit is configured to receive the signal processed by the frequency domain processing unit, generate a beam in the first spatial direction on the signal processed by the frequency domain processing unit, and send the beam to the transmitting subsystem. Wherein, the signals processed by the beam processing units in different transmitting subsystems have different spatial directions, or the spatial directions transmitted by the signals processed by the beam processing units in different transmitting subsystems overlap.

The signals processed by the frequency domain processing unit in different signal processing subsystems occupy different frequency domain positions, thus realizing that each beam occupies part of the frequency domain instead of occupying the full frequency band, so that the power of the transmitting device is limited. It is possible to transmit as many beams as possible in more directions, increasing the coverage area for the cell. Moreover, different beams can be completely independent in the frequency domain without interfering with each other. The signal processing directions of the signal processing units in the different transmitting subsystems are different, that is, the signals of the same cell can be transmitted to different spatial directions, thereby improving the spatial coverage. Alternatively, the spatial directions of the signal transmissions processed by the beam processing units in different transmitting subsystems are allowed to overlap, since these beams are independent of each other in the frequency domain, so interference can still be reduced.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the signal processed by the frequency domain processing unit in the at least two signal processing subsystems is in the frequency domain Orthogonal.

In conjunction with the first possible implementation or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the processing by the beam processing unit in the at least two signal processing subsystems The signals are orthogonal in the airspace.

For the transmitted signal, the signals processed by different signal processing subsystems are orthogonal to each other in the frequency domain and the airspace, so that the anti-interference performance is better.

In conjunction with the first possible implementation of the first aspect or the second possible implementation or the third possible implementation, in a fourth possible implementation of the first aspect, each signal processing subsystem is further The code domain processing unit is configured to receive the signal generated by the signal generating unit, perform scrambling processing on the signal, and transmit the scrambled signal to the frequency domain processing unit.

In the embodiment of the present invention, in addition to processing in the airspace and the frequency domain, the transmitting device can perform code domain processing to perform signal processing in all domains.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the signal processed by the code domain processing unit in the at least two signal processing subsystems is in the code domain Orthogonal.

For the transmitted signal, the signals processed by different signal processing subsystems are also orthogonalized in the code domain as much as possible, so that the anti-interference performance is better.

With reference to the first possible implementation of the first aspect to any one of the possible implementation manners of the fifth possible implementation, in a sixth possible implementation manner of the first aspect, the transmitting apparatus further includes a control And a unit, configured to separately configure a processing rule for the code domain processing unit, the frequency domain processing unit, and the beam processing unit included in the at least two signal processing subsystems.

The code domain processing unit, the frequency domain processing unit and the beam processing unit included in the transmitting device can all be configured by the control unit, and the control unit can comprehensively consider each signal to be transmitted, thereby processing the code domain processing unit and the frequency domain. The unit and beam processing unit configure processing rules such that the beams obtained by the various signal processing subsystems conform to the characteristics described in the above aspects. Through the unified configuration of the control unit, the corresponding processing unit does not need to configure the processing rules by itself, the workload of the corresponding processing unit is reduced, and global control can also be implemented.

In combination with the first possible implementation of the first aspect to any one of the possible implementations of the sixth possible implementation, in a seventh possible implementation of the first aspect, each of the signal processing subsystems And a power processing unit, configured to receive a signal processed by a beam processing unit sent by the beam processing unit, increase a power of the signal processed by the beam processing unit, and increase power The signal is sent to the transmitting subsystem.

The power processing unit can perform power boosting on the received signal to achieve signal-specific enhancement. For example, if the signal received by the power processing unit (ie, the signal sent by the beam processing unit to the power processing unit) is a signal directed to the edge of the cell, the power processing unit can increase the strength of the signal, ie increase the power of the signal, such that This signal can be received by the device at the edge of the cell as much as possible. Similarly, the processing rules of the power processing unit can also be configured by the control unit.

In conjunction with the seventh possible implementation of the first aspect, in an eighth possible implementation of the first aspect, the transmitting apparatus further includes a clipping unit configured to receive the power processing unit output in each of the signal processing subsystems After the power is increased, the signal after the power is increased is clipped, and the clipped signal is sent to the transmitting subsystem.

Among them, the signal can be transmitted in different directions of the airspace, and the noise is the same. By clipping the noise and the signal into different directions in the air domain, clipping can be achieved and the signal transmission power can be improved.

In a second aspect, a base station is provided, comprising a transmitting device as described in the first aspect or any one of the possible embodiments of the first aspect.

In the embodiment of the present invention, when the power of the transmitting device is limited, multiple beams can be simultaneously transmitted in multiple directions to improve the scanning coverage.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly described below. It is obvious that the following drawings are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention;

2, FIG. 6, and FIG. 9 to FIG. 12 are schematic diagrams showing the structure of a transmitting apparatus according to an embodiment of the present invention;

4 is a schematic diagram of a signal orthogonal to each other in a spatial domain and a frequency domain according to an embodiment of the present invention;

5 is a schematic diagram of a signal orthogonal in a frequency domain and orthogonal in a spatial domain according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the signals in the same spatial direction and orthogonal in the frequency domain according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a signal having the same spatial direction and orthogonal to a code domain according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of scanning performed by a transmitting apparatus according to an embodiment of the present invention; FIG.

FIG. 14 is a schematic diagram of a spatial beam generated by a transmitting device according to an embodiment of the present invention.

detailed description

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.

Hereinafter, some of the terms used in the present invention will be explained so as to be understood by those skilled in the art.

1) A terminal device, including a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, including a handheld device having a wireless connection function, or a processing device connected to a wireless modem. The user equipment can communicate with the core network via a Radio Access Network (RAN) to exchange voice and/or data with the RAN. The user equipment may include a UE, a wireless terminal device, a mobile terminal device, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile Station, a Remote Station, and a Pickup Station. Access Point (AP), Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, etc. For example, it can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), etc. .

2) A network device, such as a base station (e.g., an access point), may specifically refer to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal device and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in an LTE system or an LTE-Advanced (LTE-A) system, which is not limited in the embodiment of the present invention.

3) The terms "system" and "network" in the embodiments of the present invention may be used interchangeably. "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, the character "/", unless otherwise specified, generally indicates that the contextual object is an "or" relationship.

First, the application scenario of the embodiment of the present invention is introduced. Please refer to FIG. 1 . FIG. 1 includes a terminal device and a network device, and the terminal device and the network device can communicate with each other. The network device in FIG. 1 takes a base station as an example. Each time the base station can generate a narrow beam covering the entire frequency band, the base station and the terminal device can establish a connection by using beam scanning according to the provisions of the 802.3ad protocol. That is, both the base station and the terminal device generate a narrow beam, and both sides align the two narrow beams by periodically scanning the entire cell, and can communicate when the narrow beam is aligned.

In this way, the communication connection is established, and the process of beam scanning and alignment takes a lot of time. During this period, neither the base station nor the terminal device can obtain the signal of the other party and cannot establish a communication connection, which wastes communication resources. Reduce the efficiency of communication.

In view of this, embodiments of the present invention provide a transmitting apparatus including at least two transmitting subsystems, wherein each transmitting subsystem can generate a beam, and at least two transmitting subsystems can transmit in at least two spatial directions. Beams, different beams occupy different frequency domain positions, so that when the power of the transmitting device is limited, multiple beams can be simultaneously transmitted in multiple directions, thereby improving scanning coverage. If the transmitting device is used in the base station, the terminal devices in all directions in the cell can be aligned with the base station in time to establish a communication connection, thereby saving communication resources and improving communication. Letter efficiency.

It should be noted that the method provided by the embodiment of the present invention can be applied not only to the 5G system but also to the next-generation communication system, and other communication systems having high-frequency base stations, which are not limited in the embodiment of the present invention.

The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

Referring to FIG. 2, an embodiment of the present invention provides a transmitting device, which can be used in an access network device, such as a base station. The transmitting device comprises a transmitting subsystem 202 and at least two signal processing subsystems 201, wherein each signal processing subsystem 201 comprises a signal generating unit 2011. The signal generation unit 2011 is for generating a signal and transmitting the generated signal to the transmitting subsystem 202. The transmitting subsystem 202 includes at least two transmission units 2021, which may be understood as radio frequency transmission channels. The transmission unit 2021 included in the transmission subsystem 202 and the signal generation unit 2011 included in the signal processing subsystem 201 may have a one-to-one correspondence, that is, the signal generated by one signal generation unit 2011 may be transmitted to the transmission corresponding to the signal generation unit 2011. Unit 2021 performs the transmission. The transmission unit 2021 is configured to transmit a signal generated by the signal generation unit 2011 to an antenna for transmission.

Each of the at least two signal processing subsystems 201 can generate a beam, and at the same time, at least two signal processing subsystems 201 can transmit beams to at least two spatial directions through the transmitting subsystem 202, That is, each signal processing subsystem 201 transmits a beam to a spatial direction through the transmitting subsystem 202. The frequency domain positions occupied by the beams in different spatial directions are different, and the bandwidth occupied by the beams in different spatial directions may also be different, thereby being circumvented. The interference between the beams, and the transmission power on each beam can be concentrated on a smaller bandwidth, and the power density in the frequency domain is higher, which can improve the coverage of the cell.

In the embodiment of the present invention, an attribute of a small bandwidth of the control channel is utilized. In an actual communication system, the bandwidth used for accessing the control information of the network and the control information for maintaining the user connection is much smaller than the bandwidth occupied by the actual service signal. The main discussion of the embodiment of the present invention is how to In this embodiment of the present invention, only a signal occupying less bandwidth is transmitted in a narrow beam direction, and multiple signals are transmitted in multiple beam directions, thereby making it possible to transmit multiple control signals in a narrow beam direction. The base station can cover more space. By transmitting narrow beams in multiple spatial directions, the power density in the frequency domain is greatly improved, and the beam gain of the narrow beam is combined, thereby improving the coverage capability of the beam.

In the embodiment of the present invention, the signal generated by the signal generating unit 2011 may include control information for searching and tracking the terminal device. Different signal generation units 2011 may generate different types of control information, for example, including pilot information, control signaling, or synchronization information, and the like. It should be noted that the embodiment of the present invention mainly relates to a process in which a network device and a terminal device establish a communication connection, and therefore mainly relates to control information, and therefore, no introduction is made on how to transmit data. For example, the transmitting device may send data according to the manner in the prior art, or the transmitting device may also be configured to use the signal processing subsystem 201 to specifically generate data and set the transmitting subsystem 202 to specifically transmit data, which is not limited in the embodiment of the present invention. .

In a possible implementation, each of the signal processing subsystems 201 further includes a frequency domain processing unit 2013 and a beam processing unit 2014, see FIG.

Take any one of the signal processing subsystems 201 as an example. After the signal generation unit 2011 generates a signal, the generated signal is transmitted to the frequency domain processing unit 2013, and the frequency domain processing unit 2013 assigns a frequency domain position to the received signal, that is, allocates the frequency domain position of the signal at the time of transmission. The signals processed by the frequency domain processing unit 2013 in the different signal processing subsystems 201 occupy different frequency domain positions, so that each beam occupies part of the frequency domain, instead of occupying the full frequency band, so that the transmitting device In the case of limited power, as many beams as possible can be transmitted in more directions, increasing the coverage area for the cell. Moreover, different beams can be completely independent in the frequency domain without interfering with each other.

The signals processed by the frequency domain processing unit 2013 in the different signal processing subsystems 201 can be orthogonal in the frequency domain, which can further reduce interference. In one implementation, the frequency domain processing unit 2013 in the different signal processing subsystems 201 assigns different subcarriers to the received signals, and the subcarriers are orthogonal to each other.

After the frequency domain processing unit 2013 allocates the frequency domain location for the received signal, the signal assigned the frequency domain location is sent to the beam processing unit 2014, and the beam processing unit 2014 receives the signal processed by the frequency domain processing unit 2013, and then receives the received signal. The signal processed by the frequency domain processing unit 2013 is processed to generate a beam in the first spatial direction, and then the beam in the first spatial direction is sent to the transmission unit 2021. Thereby, the transmission unit 2021 can transmit the beam in the first spatial direction to the antenna for transmission. The spatial directions transmitted by the signals processed by the beam processing unit 2014 in the different signal processing subsystems 201 are different, or the spatial directions transmitted by the signals processed by the beam processing units 2014 in the different signal processing subsystems 201 overlap.

The beam generated by the beam processing unit 2014 in the different signal processing subsystems 201 may be orthogonal in the air domain and completely orthogonal in the frequency domain, whether for signals of the same cell or signals of different cells. This can further reduce interference.

Referring to FIG. 4, a schematic diagram of each signal being orthogonal in the frequency domain and the airspace is performed, taking five signals as an example. In Figure 4, each of the arcs represents a signal, and it can be seen that the five signals are orthogonal in frequency and space. 4 includes two parts, which represent the same meaning, but are represented from different sides. Where f1-f5 represent different frequencies, and s1-s5 represent different spatial directions in the airspace. If the spatial directions of the two beams are different, it indicates that the two beams are orthogonal in the airspace.

Or, whether for the signal of the same cell or the signal of a different cell, in order to improve the spatial resolution, the beams generated by the beam processing unit 2014 in the different signal processing subsystems 201 may partially intersect in the airspace, that is, in the airspace part. Orthogonal, but completely orthogonal in the frequency domain, this also reduces interference. Of course, if the signals for the same cell are used, it is preferable that the beams generated by the beam processing unit 2014 in the different signal processing subsystems 201 are completely orthogonal in the airspace.

Please refer to FIG. 5 , which is a schematic diagram in which the signals are completely orthogonal in the frequency domain and orthogonal in the spatial domain, taking 14 signals as an example. In Fig. 5, each of the arc boxes represents a signal, and it can be seen that the 14 signals are orthogonal in the frequency domain and partially orthogonal in the spatial domain. Wherein, as long as the spatial regions in which the two signals are located are different, for example, the spatial region in which one signal is located is the s1 region in FIG. 5, and the spatial region in which the other signal is located is the S2 region in FIG. It is orthogonal in the airspace. And if the spatial regions in which the two signals are located partially overlap, for example, the spatial region in which one signal is located is the s1 region in FIG. 5, and the spatial region in which the other signal is located includes the S1 region and the S2 region in FIG. Then these two signals are non-orthogonal in the airspace. It can be seen that even if the two signals do not implement orthogonality in the air domain, as long as the frequency domains of the two signal assignments are different, the two signals can still be orthogonal in the frequency domain. Here, FIG. 5 includes two parts, which represent the same meaning, but are represented from different sides. Where f1-f5 represent different frequencies, and s1-s8 represent different spatial directions in the airspace. If the spatial directions of the two beams are different, it indicates that the two beams are orthogonal in the airspace. Figures 4 and 5 can be considered as signals for the same cell.

In a possible implementation, each of the signal processing subsystems 201 further includes a code domain processing unit 2015, see FIG. The code domain processing unit 2015 is configured to receive the signal generated by the signal generating unit 2011, perform scrambling processing on the received signal, and transmit the scrambled signal to the frequency domain processing unit 2013. That is to say, if the code domain processing unit 2015 is added, the frequency domain processing unit 2013 receives the signal scrambled by the code domain processing unit 2015.

The signals scrambled by the code domain processing unit 2015 in the different signal processing subsystems 201 can be orthogonally orthogonal in the code domain, which can further reduce interference.

As described above, for signals of different cells, there may be some signals emitting the same spatial direction. However, even if the spatial directions of the signals are the same, the individual signals are completely independent in the code domain, avoiding interference between cells.

In the embodiment of the present invention, for the signals finally obtained by the transmission unit 2021 in the different signal processing subsystems 201, it is only necessary to implement orthogonality in any one of the code domain, the frequency domain or the spatial domain, so that Reduce interference. Of course, it is preferred to implement orthogonality in the code domain, the frequency domain, and the air domain at the same time, so that interference between signals in multiple cells or between signals of multiple cells in the cell can be better avoided.

For the signals of different cells, the signals processed by the different signal processing subsystems 201 are orthogonal to each other in the spatial domain, the frequency domain, and the code domain. However, it may be difficult to implement in practice, and the embodiment of the present invention also allows that, for signals of adjacent different cells, some signals may have the same spatial direction, but are orthogonal in the frequency domain. Even if the spatial directions of the signals are the same, the individual signals are completely independent in the frequency domain, avoiding interference between cells.

Please refer to FIG. 7 , which is a schematic diagram in which the signals are completely orthogonal in the frequency domain and overlap in the spatial domain, and 15 signals are taken as an example. In Fig. 7, each arc box represents a signal, wherein signal 1 - signal 5 is the signal of cell 1, signal 6 - signal 10 is the signal of cell 2, signal 11 - signal 15 is the signal of cell 3, cell 1, Cell 2 and cell 3 are neighbor cells. It can be seen that these 15 signals are completely independent in the frequency domain, ie two Two orthogonal, and in the air domain, signal 1, signal 6 and signal 11 are in the same spatial direction, that is, signal 1, signal 6 and signal 11 overlap in the air domain, signal 2, signal 7 and signal 12 are the same The spatial direction, that is, the signal 2, the signal 7 and the signal 12 overlap in the spatial domain, and the signal 3, the signal 8 and the signal 13 are in the same spatial direction, that is, the signal 3, the signal 8 and the signal 13 overlap in the air domain, and the signal 4. Signal 9 and signal 14 are in the same spatial direction, that is, signal 4, signal 9 and signal 14 overlap in the spatial domain, and signal 5, signal 10 and signal 15 are in the same spatial direction, that is, signal 5 and signal 10 The sum signal 15 overlaps in the airspace. Among them, f1-f15 represent different frequencies, and s1-s8 represent different spatial directions in the airspace. It can be seen that even if different signals overlap in the airspace, they are staggered in the frequency domain, and there is no interference.

Alternatively, for signals of different cells, the signals processed by the different signal processing subsystems 201 are orthogonal to each other in the spatial domain, the frequency domain, and the code domain. However, it may be difficult to implement in practice, and the embodiment of the present invention also allows that for a signal of a neighboring different cell, some signals may have the same spatial direction, but are orthogonal to each other in the code domain. Even if the spatial directions of the signals are the same, the individual signals are completely independent in the code domain, avoiding interference between cells.

Please refer to FIG. 8 , which is a schematic diagram in which the signals are completely orthogonal in the code domain and overlap in the spatial domain, and 15 signals are taken as an example. In Fig. 8, each curved frame represents a signal, wherein signal 1 - signal 5 is the signal of cell 1, signal 6 - signal 10 is the signal of cell 2, signal 11 - signal 15 is the signal of cell 3, cell 1, Cell 2 and cell 3 are neighbor cells. It can be seen that these 15 signals are completely independent in the code domain, that is, two or two orthogonal, and in the air domain, signal 1, signal 6 and signal 11 are the same spatial direction, and signal 2, signal 7 and signal 12 are the same. The spatial direction, signal 3, signal 8 and signal 13 are the same spatial direction, signal 4, signal 9 and signal 14 are the same spatial direction, and signal 5, signal 10 and signal 15 are the same spatial direction. Where c1-c15 represent different codes, and the encoding of the two signals is different, indicating that the two signals are orthogonal in the code domain, and s1-s8 represent different spatial directions in the airspace. It can be seen that even if different signals overlap in the airspace, they are staggered in the code domain, and there is no interference.

In a possible embodiment, the transmitting device further comprises a control unit 203, see FIG. The control unit 203 is configured to allocate processing rules for any one or more of the code domain processing unit 2015, the frequency domain processing unit 2013, and the beam processing unit 2014 included in the at least two signal processing subsystems 201. In FIG. 9, the control unit 203 and each functional unit in the dotted line frame may have a connection relationship.

That is, for any one of the signal processing subsystems 201, if the signal processing subsystem 201 includes the code domain processing unit 2015, the control unit 203 can assign a processing rule to the code domain processing unit 2015 so that different code domain processing The signals processed by unit 2015 are orthogonal in the code domain; if the signal processing subsystem 201 includes the frequency domain processing unit 2013, the control unit 203 can assign processing rules to the frequency domain processing unit 2013 such that different frequency domain processing units 2013 The processed signals are different in the frequency domain. Ideally, the signals processed by the different frequency domain processing units 2013 are orthogonal in the frequency domain; if the signal processing subsystem 201 includes the beam processing unit 2014, the control unit 203 The processing rules may be assigned to the beam processing unit 2014 such that the beams generated by the different beam processing units 2014 have different spatial directions, ideally the beams produced by the different beam processing units 2014 are orthogonal in the spatial domain.

The frequency domain positions occupied by the beams in different spatial directions may be different, and the occupied bandwidth may also be different. The frequency domain location and bandwidth occupied by the beams in different spatial directions may be determined by the control unit 203. The control unit 203 can determine the number of users in the spatial direction and the traffic volume. For example, if there are a large number of users in a certain spatial direction and the service traffic is large, more control information needs to be configured to occupy more bandwidth. Parameters such as the number of users in a spatial direction and traffic flow can be obtained through system measurements.

When the control unit 203 allocates the processing rule, the basic principle is that the processing is performed according to the orthogonality, and the code domain processing unit 2015, the frequency domain processing unit 2013, and the beam processing unit 2014 are configured by the control unit 203, which can be guaranteed as much as possible. The orthogonality of the signal on at least one of the code domain, the frequency domain, or the spatial domain.

In a possible implementation, each of the signal processing subsystems 201 also includes a power processing unit 2016, see FIG. The power processing unit 2016 is connected between the beam processing unit 2014 and the transmitting subsystem 202, and can receive the processed signal sent by the beam processing unit 2014, and increase the power of the signal processed by the received beam processing unit 2014, and then increase The high power signal is sent to the transmit subsystem 202.

The power processing unit 2016 can perform power boosting on the received signal to achieve signal targeting Sexual enhancement. For example, if the signal received by the power processing unit 2016 (ie, the signal sent by the beam processing unit 2014 to the power processing unit 2016) is a signal directed to the cell edge, the power processing unit 2016 can increase the strength of the signal, ie increase the signal. The power is such that the signal is received by the device at the cell edge as much as possible. The power processing unit 2016 can determine the spatial direction generated by the beam processing unit 2014 according to the spatial direction of the beam. In addition, when the power processing unit 2016 increases the power of the signal, the increased amplitude may be determined according to the transmission distance of the signal, and the transmission distance of the signal is related to the geographical location of the cell, for example, according to the geographical location of the cell, the pointing to the cell edge may be determined. The distance the signal needs to be transmitted, so that the magnitude of the power increase can be determined. In general, the farther the transmission distance is, the greater the magnitude of power increase is required.

It should be noted that different signal processing subsystems 201 process different signals. For example, the signal generation unit 2011 in the different signal processing subsystems 201 generates different control signals, correspondingly, the code domain processing unit 2015, the frequency domain processing unit 2013, and the beam processing unit in the different signal processing subsystems 201. The configuration and processing method of the 2014 and power processing unit 2016 are also different.

In a possible embodiment, the transmitting device further includes a clipping unit 204, see FIG. The clipping unit 204 is coupled to the power processing unit 2016 in each of the signal processing subsystems 201 and to each of the transmission subsystems 202, and may receive the power processing unit 2016 in each of the signal processing subsystems 201. The output increased power signal is subjected to clipping processing of the received increased power signal, and then the clipped signal is sent to the transmitting subsystem 202 for transmission by the corresponding transmission unit 2021.

Among them, the signal can be transmitted in different directions of the airspace, and the noise is the same. By the clipping unit 204, the noise and the signal are divided into different directions in the air domain, and clipping can be realized to improve the signal transmission power.

In a possible implementation, the transmitting device further includes a merging unit 205, see FIG. The merging unit 205 is connected between the signal processing subsystem 201 and the transmitting subsystem 202. If the transmitting device includes the clipping unit 204, the merging unit 205 is connected to the clipping unit 204 and the transmitting subsystem. Between 202, Figure 12 takes this as an example.

If the transmitting device does not include the clipping unit 204, the combining unit 205 is configured to combine the signals output by the signal processing subsystem 201, and then send the combined signals to the corresponding transmission unit 2021 in the transmitting subsystem 202, ie, The combined signals are sent to different RF channels for transmission through the antenna.

If the transmitting device includes the clipping unit 204, the combining unit 205 is configured to combine the signals output by the clipping unit 204, and then send the combined signals to the corresponding transmission unit 2021 in the transmitting subsystem 202, that is, to merge The subsequent signals are sent to different RF channels for transmission through the antenna.

In addition, the transmitting apparatus provided by the embodiment of the present invention can also perform the function of signal receiving. The processing mode is opposite to the signal transmitting process when performing signal receiving, and details are not described herein.

If the transmitting apparatus provided by the embodiment of the present invention is used in a base station, the transmitting apparatus provided by the embodiment of the present invention enables the base station to transmit signals in different spatial directions in different frequency domains, so that the energy of the entire downlink transmission is The signal is allocated in a plurality of spatial directions, so that the coverage of the signal is increased, and in the embodiment of the present invention, each signal can be transmitted with the narrowest beam supported by the system when transmitting the signal, so that the beams are all Has the largest beam gain. In addition, since multiple beams are simultaneously transmitted, the downlink transmit power can be further improved by using airshed clipping and power boosting.

The mechanism for simultaneously transmitting multiple beams according to the embodiment of the present invention improves the coverage of a cell per unit time, and each beam can be the narrowest beam with the highest beam gain. Since the orthogonalization processing of the frequency domain, the code domain, and the air domain is simultaneously adopted, interference within the cell and between cells is also well avoided.

In actual system operation, since this multi-beam mechanism can cover a large area at one time, the scanning time can be greatly shortened when traversing the entire cell. It can be used during terminal device access (search) and during communication with the terminal device. The system can configure the code domain, the frequency domain, the airspace, and the scanning mechanism, and then the base station performs scanning by using the multi-beam mechanism provided by the embodiment of the present invention when searching and tracking, for example, using periodic scanning. the way. The method provided by the embodiment of the invention can achieve fast scanning without reducing the gain of the beam and the accuracy of the beam in space, and improving the coverage capability of the high frequency system.

An example of a transmitting device generating multiple beams and performing multi-beam scanning is shown in FIG. There are 16 channels w0-w15 in the digital domain, and each channel corresponds to one column of antennas, corresponding to a total of 16 columns of antennas in the horizontal direction. Each of the channels corresponds to one transmission unit 2021. There is an analog phase shifter on each antenna for phase adjustment. Thus, in the horizontal direction, the digital domain can simultaneously generate multiple beams. In the vertical direction, since the analog phase shifter control requires switching time, it is necessary to adjust the phase shifter in different time periods so that the beam is scanned in the vertical direction. Wherein, the control of the horizontal direction and the vertical direction is completed by the beam processing unit 2014, wherein the horizontal direction control includes controlling the number of beams to be generated in the horizontal direction, and which direction each beam is directed, etc., for the vertical direction The same is true for control. As shown in FIG. 13, it is expressed how the data generated in the signal generating unit 2011 is transmitted in the spatial direction of the configuration.

Compared with the solution in the prior art, the scanning mode provided by the embodiment of the present invention can complete the scanning in the horizontal direction once, and only perform the phase shift scanning in the vertical direction, thereby greatly reducing the scanning time of the entire cell, and each time The gain of the beam is not reduced.

The spatial beam actually generated in the embodiment of the present invention is as shown in FIG. The transmitting device provided by the embodiment of the present invention can generate a group of beams at a time in the horizontal direction to cover the horizontal direction of the cell. In the vertical direction, by adjusting the phase shifter and scanning a plurality of times, taking 4 times as an example, the four times correspond to the downtilt angles Φ1, Φ2, Φ3, and Φ4, respectively, covering the vertical direction of the cell, thereby completing the scanning of the entire cell. The number of scans is small and the efficiency is high.

The transmitting device in the embodiment of the present invention includes at least two transmitting subsystems 201, wherein each transmitting subsystem 201 can generate a beam, and at least two transmitting subsystems 201 can transmit beams to at least two spatial directions, different beams. The occupied frequency domain positions are different, so that multiple beams can be simultaneously transmitted in multiple directions when the power of the transmitting device is limited, and the scanning coverage is improved. If the transmitting device is used in the base station, the terminal devices in all directions in the cell can be aligned with the base station in time to establish a communication connection, save communication resources, and improve communication efficiency.

In the present invention, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may also be an independent physical module.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solution of the present invention may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device, such as a personal computer. , a server, or a network device or the like, or a processor performs all or part of the steps of the method of the various embodiments of the present invention. The foregoing storage medium includes: a universal serial bus flash drive, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.

The above embodiments are only used to describe the technical solutions of the present invention in detail, but the description of the above embodiments is only for the purpose of facilitating the understanding of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention. Variations or substitutions that may be readily conceived by those skilled in the art are intended to be included within the scope of the present invention.

Claims

A transmitting device, comprising at least two signal processing subsystems and a transmitting subsystem;

Wherein each signal processing subsystem includes a signal generating unit for generating a signal; wherein the at least two signal processing subsystems are configured to transmit beams to at least two spatial directions through the transmitting subsystem, and different spatial directions The upper beam occupies a different frequency domain position.
The transmitting apparatus according to claim 1, wherein each of said signal processing subsystems further comprises a frequency domain processing unit and a beam processing unit;

The frequency domain processing unit is configured to receive a signal generated by the signal generating unit, and allocate a frequency domain position to the signal; wherein, a frequency domain location occupied by a signal processed by a frequency domain processing unit in different transmitting subsystems is different ;

The beam processing unit is configured to receive a signal processed by the frequency domain processing unit, generate a beam in a first spatial direction on the signal processed by the frequency domain processing unit, and send the beam to the transmitter A system in which signals processed by a beam processing unit in different signal processing subsystems emit different spatial directions, or spatial directions transmitted by signals processed by beam processing units in different signal processing subsystems overlap.
The transmitting apparatus according to claim 2, wherein the signals processed by the frequency domain processing unit of the at least two signal processing subsystems are orthogonal in frequency domain.
The transmitting apparatus according to claim 2 or 3, wherein the signals processed by the beam processing unit in the at least two signal processing subsystems are orthogonally orthogonal in the airspace.
A transmitting apparatus according to any one of claims 2 to 4, wherein each of said signal processing subsystems further comprises a code domain processing unit for receiving a signal generated by said signal generating unit for said signal The scrambling process is performed, and the scrambled signal is transmitted to the frequency domain processing unit.
The transmitting apparatus according to claim 5, wherein the signals processed by the code domain processing unit of the at least two signal processing subsystems are orthogonally orthogonal in the code domain.
A transmitting device according to any of claims 2-6, wherein said transmitting device further A control unit is configured to separately configure processing rules for a code domain processing unit, a frequency domain processing unit, and a beam processing unit included in the at least two signal processing subsystems.
The transmitting apparatus according to any one of claims 2-7, wherein each of the signal processing subsystems further comprises a power processing unit, configured to receive the processed by the beam processing unit sent by the beam processing unit And increasing the power of the signal processed by the beam processing unit and transmitting the increased power signal to the transmitting subsystem.
The transmitting apparatus according to claim 8, wherein said transmitting means further comprises a clipping unit for receiving an increased power signal output by said power processing unit in said each signal processing subsystem And performing clipping processing on the increased power signal, and transmitting the clipped signal to the transmitting subsystem.
A base station, comprising the transmitting device of any of claims 1-9.