WO2017000862A1

WO2017000862A1 - Signal processing method and device

Info

Publication number: WO2017000862A1
Application number: PCT/CN2016/087330
Authority: WO
Inventors: 张鹏程; 赵楠
Original assignee: 华为技术有限公司
Priority date: 2015-06-30
Filing date: 2016-06-27
Publication date: 2017-01-05
Also published as: CN106330282A; CN106330282B

Abstract

Provided are a signal processing method and device, which relate to the technical field of communications and can increase system capacity and reduce system resource waste. The method comprises: generating M first signals, with M≥2; weighting the M first signals, to obtain N second signals, wherein at least two of the N second signals being not correlated, each of the N second signals being synthesized from at least two first signals, N being the number of physical ports, N≥2 and N≤M; transmitting the N second signals via antennas corresponding to the N physical ports in one-to-one correspondence, wherein the signals of any two neighbouring physical ports among the N physical ports are not correlated.

Description

Signal processing method and device

The present application claims priority to Chinese Patent Application No. 201510376593.6, entitled "A Signal Processing Method and Apparatus", filed on June 30, 2015, the entire disclosure of which is incorporated herein by reference. .

Technical field

The present invention relates to the field of communications technologies, and in particular, to a signal processing method and apparatus.

Background technique

In order to improve the mobile communication environment of the indoor user group in the building, an indoor distribution system, referred to as a room division system, is proposed in the prior art. In the room sub-system, the signal of the mobile base station will be evenly distributed in every corner of the room by using the preset indoor antenna distribution system, thereby ensuring that the indoor area has ideal signal coverage, improving the quality of the call in the building, and improving the mobile phone. The connection rate, the network capacity is expanded, and the service level of the mobile network is improved as a whole.

As shown in FIG. 1 , the room division system in the prior art generally consists of an indoor baseband processing unit (English: Building Baseband Unit, BBU for short), a remote radio unit (English: Radio Remote Unit, RRU), and power division. The device is composed of components such as an indoor antenna, and the RRU and the BBU are connected by an optical fiber. In the room subsystem, the BBU can flexibly connect multiple RRUs. At the same time, the baseband capacity of the BBU can be fully shared, adapt to the uneven distribution of traffic, and improve system stability.

At present, in order to fully consider the overall coverage of the room division system, the BBU sends a signal by directly transmitting one of the logical port signals to all RRU physical ports, or the BBU directly transmits the same logical port signal to any adjacent two. The RRU physical port is used to send signals.

With the above signal processing method, the terminal in the signal coverage overlapping area (the area covered by the signals transmitted by the antennas corresponding to the adjacent two physical ports) in the system can receive two adjacent physical ports. The signal transmitted by the corresponding antenna, the two signals are the same logical port signal with the same frequency, so that for the terminal, after receiving the signal, the terminal can only parse out one logical port signal, but cannot know Other logical port signals, causing The waste of resources, in addition, because the two signals in the overlapping area of the signal coverage in the existing system are the same logical port signal, the existing signal coverage overlap area can effectively support two-way power diversity, but cannot support Multi-stream multiplexing results in lower system capacity.

Summary of the invention

The embodiment of the invention provides a signal processing method and device, which solves the problem that the existing signal coverage overlapping area cannot support multi-stream multiplexing, resulting in waste of system resources and low capacity.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a signal processing method, where the method includes:

Generating M first signals, the M≥2;

Weighting the M first signals to obtain N second signals, at least two of the N second signals are uncorrelated, and each of the N second signals is Synthesizing at least two first signals, the N being the number of physical ports, the N≥2, and N≤M;

The N second signals are correspondingly transmitted through antennas corresponding to the N physical ports, wherein signals of any two adjacent physical ports of the N physical ports are irrelevant.

In a first possible implementation of the first aspect, the weighting the M first signals to obtain the N second signals includes:

Combining the M first signals into a vector P;

Obtaining a weight matrix, wherein the weight matrix comprises N sets of vectors, each set of vectors comprising M variables, wherein any two adjacent sets of vectors in the weight matrix are orthogonal, and each set of vectors has a modulus of 1 ;

According to the weight matrix and the vector P, N second signals are obtained.

With reference to the first possible implementation of the first aspect, in a second possible implementation manner of the first aspect, the obtaining, according to the weight matrix and the vector P, the N second signals, including:

Multiplying the weight matrix and the vector P to obtain N second signals.

With reference to the foregoing first aspect, or the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the N physical ports are the ports of the N single-issue single-receiving remote devices The component is configured to transmit the N second signals to the antenna corresponding to the N physical ports.

Transmitting, by the antennas corresponding to the ports of the N single-issue remote receiving devices, the N second single-signal one-to-one correspondence, wherein any two adjacent single-transmitters of the N single-issue single-receiving remote devices The signal of the port of the remote receiving device is irrelevant.

In conjunction with the foregoing first aspect, or the first possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the N physical ports are ports of a multi-transmission remote device, The number of ports of the multi-received remote device is N, and the N second signals are correspondingly transmitted through the antennas corresponding to the N physical ports, including:

Transmitting, by the antennas corresponding to the ports of the multiple transmit and receive remote devices, the N second signals are in a one-to-one correspondence, wherein any one of the N ports of the multiple transmit and receive remote devices The signal is irrelevant.

With reference to the foregoing first aspect, or the first possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the N physical ports are configured by the port of the at least two multiple transmit and receive remote devices The number of ports of the first remote device is n, 2≤n<N, and the first remote device is any one of at least two multiple transmit and receive remote devices, and the N second signals are used. One-to-one corresponding antenna transmission through N physical ports, including:

And transmitting, by the antennas corresponding to the ports of the at least two remote devices, the signals of any adjacent one of the n ports of the first remote device are not Correspondingly, the signal of the port of the first remote device adjacent to the second remote device is irrelevant, and the first remote device is adjacent to the second remote device.

With reference to the foregoing first aspect, or the first possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the N physical ports are configured by the ports of the m single-issue remote receiving devices And the y is a multi-transmission and multi-receiving port of the remote device, where m≥1, y≥1, the N second signals are correspondingly transmitted through the antennas corresponding to the N physical ports, specifically including:

Transmitting, by the m signals of the N second signals one by one, the antennas corresponding to the ports of the m single-transmitting and receiving remote devices, and the Nm signals of the N second signals are one by one The corresponding antenna is transmitted by the port corresponding to the port of the multi-transmission and remote receiving device, wherein the signals of the ports of any two adjacent single-transmitting and receiving remote devices in the m single-issue and single-receiving remote devices are It is irrelevant, the third remote device is any one of the single-transmission remote receiving devices, and the fourth remote device is any one of the multiple transmitting and receiving remote devices, and the fourth remote device is multiple. The signal of any adjacent port in the port is irrelevant, and the third remote device is adjacent to the fourth remote device. The signal of the port is irrelevant, and the third remote device is adjacent to the fourth remote device.

In a second aspect, an embodiment of the present invention provides a base station, where the base station includes:

Generating unit, configured to generate M first signals, where M≥2;

a processing unit, configured to perform weighting processing on the M first signals generated by the generating unit, to obtain N second signals, where at least two signals of the N second signals are irrelevant, the N Each of the second signals is composed of at least two first signals, the N being the number of physical ports, the N≥2, and N≤M;

a sending unit, configured to transmit the N second signals obtained by the processing unit in a one-to-one correspondence by an antenna corresponding to the N physical ports, where any two physical ports of the N physical ports are adjacent to each other The signal is irrelevant.

In a first possible implementation manner of the second aspect, the processing unit is specifically configured to combine the M first signals into a vector P, and to obtain a weight matrix, where the weight matrix includes N sets of vectors, each set of vectors comprising M variables, any two adjacent sets of vectors in the weight matrix being orthogonal, and each set of vectors having a modulus of 1, and for using the weight matrix and said Vector P, which yields N second signals.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the processing unit is specifically configured to multiply the weight matrix and the vector P to obtain N second signals.

With reference to the foregoing second aspect, or the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the N physical ports are used by the N single-issue single-receiving ports of the remote device Composition, then,

The sending unit is specifically configured to transmit, by using the antennas corresponding to the ports of the N single-issue and single-receiving remote devices, in which the N second signals are one-to-one, wherein the N single-issue and single-receiving remote devices are The signals of the ports of any two adjacent single-issue remote devices are irrelevant.

With reference to the foregoing second aspect, or the first possible implementation manner of the second aspect, in the fourth possible implementation manner of the second aspect, the N physical ports are ports of a multi-transmission remote device, The number of ports that send and receive remote devices is N, then

The sending unit is configured to transmit, by using the antenna corresponding to the port of the multiple transmit and receive remote device, the N second signals are in a one-to-one correspondence, wherein the multiple transmit and receive remote devices are N The signals of any adjacent ports in the port are irrelevant.

With reference to the foregoing second aspect, or the first possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the N physical ports are configured by the port of the at least two multiple transmit and receive remote devices The number of ports of the first remote device is n, 2≤n<N, and the first remote device is any one of at least two multiple transmit and receive remote devices.

The sending unit is configured to transmit, by the antenna corresponding to the port of the at least two remote devices, the N second signals are in a one-to-one correspondence, wherein any of the n ports of the first remote device The signals of the adjacent ports are irrelevant, and the signals of the ports of the first remote device and the second remote device are irrelevant, and the first remote device and the second remote device are not related. Adjacent.

With reference to the foregoing second aspect, or the first possible implementation manner of the second aspect, in the sixth possible implementation manner of the second aspect, the N physical ports are configured by the ports of the m single-issue remote receiving devices And y multiple ports that multi-receive remote devices, m≥1, y≥1, then

The sending unit is configured to: transmit, by the m corresponding ones of the N second signals, the antennas corresponding to the ports of the m single-issue remote receiving devices, and send the N The Nm signals of the two signals are correspondingly transmitted by the antenna corresponding to the port of the CDMA multi-transmission and remote receiving device, wherein any two adjacent single-issues of the m single-issue and single-receiving remote devices The signal of the port that receives the remote device is irrelevant. The third remote device is any one of the single-transmission and remote-receiving devices, and the fourth remote device is any one of the multiple-transmission and remote-receiving devices, and any of the plurality of ports of the fourth remote device are adjacent to each other. The signal of the port is irrelevant, the signal of the port of the third remote device adjacent to the fourth remote device is irrelevant, and the third remote device is adjacent to the fourth remote device.

The embodiment of the invention provides a signal processing method and device. After generating the M (M ≥ 2) first signals, the base station performs weighting processing on the M first signals to obtain N second signals, where N At least two of the second signals are uncorrelated, and each of the N second signals is synthesized by at least two first signals, N being the number of physical ports, N≥2, and N≤M, Then, the base station transmits the N second signals one by one correspondingly through the antenna corresponding to the N physical ports, wherein the signals of any two adjacent physical ports of the N physical ports are irrelevant.

In this solution, the base station maps the M first signals into N second signals by using a weighting process, and transmits the N second signals one by one through the antenna corresponding to the N physical ports. Since each of the N second signals is synthesized by at least two first signals Therefore, the signal transmitted by the antenna corresponding to each physical port is synthesized by at least two first signals, and at least two of the N second signals are uncorrelated, and any of the N physical ports The signals of two adjacent physical ports are irrelevant. Therefore, the signals transmitted by the antennas corresponding to any two adjacent physical ports are irrelevant, so that the signal coverage overlapping area can support multi-stream multiplexing. Therefore, the system capacity is increased. In addition, when the terminal in the signal coverage overlapping area receives the signal transmitted by the antenna, the terminal can accurately parse each first signal according to the received signal without causing waste of resources.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural view of a room dividing system in the prior art;

2 is a schematic diagram of signal distribution of a room division system in the prior art;

FIG. 3 is a schematic flowchart diagram of a signal processing method according to an embodiment of the present invention; FIG.

4 is a schematic diagram 1 of signal distribution according to an embodiment of the present invention;

FIG. 5 is a second schematic diagram of signal distribution according to an embodiment of the present invention; FIG.

6 is a schematic diagram 3 of signal distribution according to an embodiment of the present invention;

FIG. 7 is a fourth schematic diagram of signal distribution according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram 1 of a base station according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram 2 of a base station 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. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first" and "second" in the specification and claims of the present invention and the above drawings, "Third" and "Fourth" and the like are used to distinguish different objects, and are not used to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

In the following description, for purposes of illustration and description However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the invention.

In addition, the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the existing room division system, in order to fully consider the overall coverage of the room division system, the BBU sends a signal by directly transmitting one of the logical port signals to all RRU physical ports, or the BBU directly transmits the same logical port signal. Signals are sent to any two adjacent RRU physical ports. The two adjacent RRUs refer to two RRUs that have the shortest distance on a certain plane in space.

For example, as shown in FIG. 2, in a two-story building, a single-issue RRU is arranged on each floor, and a distributed arrangement of indoor antennas is implemented by using a power splitter, and the BBU directly sends the logical port signal P0 to The signals of the ports of RRU1 and RRU2, RRU1 and RRU2 are all P0. Then, RRU1 sends the signal P0 to the power splitter 1. The power splitter 1 processes the signal P0 to obtain two signals P0 of equal power, similarly. RRU2 sends the signal P0 to the power splitter 2, and the power splitter 2 processes the signal P0 by power division to obtain two signals P0 of equal power.

In the prior art, since the signals of the two adjacent RRU physical ports are the same by using the above signal processing method, the signals of the two physical ports are the same logical port signals of the same frequency, and therefore, the physicals of the adjacent two RRUs The signals transmitted by the antenna corresponding to the port also belong to the same logical port signal. If the terminal is in a letter transmitted by an antenna corresponding to two adjacent physical ports When the terminal is in the area covered by the same number, that is, if the terminal is in the overlapping area of the signal, the terminal will receive two logical port signals with the same frequency, so that the terminal can only parse out one logical port signal, but cannot know Other logical port signals cause waste of resources. In addition, since the two signals in the overlapping area of the signal coverage in the existing system are the same logical port signal, the existing signal coverage overlapping area can effectively support two paths. Power diversity, but cannot support multi-stream multiplexing, resulting in lower system capacity.

For example, as shown in FIG. 2, there is a signal coverage overlap area between the first floor and the second floor, and the terminal A in the signal coverage overlap area receives the signal P0 of the antenna 1 and the signal P0 of the antenna 2, and the antenna 1 The signal P0 and the signal P0 of the antenna 2 are the same logic port signal. When the terminal A demodulates the received signal, only one signal P0 can be identified, and it is impossible to know that another signal P0 exists, thus causing resources. Waste.

The following embodiments of the present invention do not send the same logical port signal to the adjacent two physical ports, but perform weighting processing on the plurality of logical port signals, and then process the signals corresponding to each other through the physical port. Antenna transmission, wherein the signal of each physical port is synthesized by at least two logical port signals, and signals of two adjacent physical ports are irrelevant, so that the signal coverage overlapping area can support multiple streams To improve the system capacity, and the terminals located in the overlapping areas of the signal coverage can accurately resolve the signals of the respective logical ports without causing waste of resources.

The various techniques described in the present invention are applicable to room division systems and are also applicable to other distributed networking.

Embodiment 1

The present invention provides a signal processing method, as shown in FIG. 3, the method includes:

S101. The base station generates M first signals, where M≥2.

S102. The base station performs weighting processing on the M first signals to obtain N second signals, where at least two of the N second signals are uncorrelated, and each of the N second signals is at least The two first signals are synthesized.

Where N is the number of physical ports, N≥2, and N≤M.

S103. The base station transmits the N second signals in a one-to-one correspondence by the antenna corresponding to the N physical ports, where the signals of any two adjacent physical ports of the N physical ports are irrelevant.

The execution subject base station of the embodiment of the present invention may be a BBU or a BBU and an RRU. An embodiment of the present invention is not limited.

After generating the M first signals, the base station performs weighting processing on the M first signals, and then transmits the N second signals obtained by the weighting processing one by one through the antenna corresponding to the N physical ports, where N At least two of the second signals are uncorrelated, and each of the N second signals is synthesized by at least two first signals, and signals of any two adjacent physical ports of the N physical ports It is irrelevant.

The base station in the embodiment of the present invention may process the M first signals by using any weighting method, and only the weighting method is required to make at least two of the generated N second signals uncorrelated, and Each of the N second signals may be synthesized by at least two first signals, which is not specifically limited in the embodiment of the present invention.

Preferably, the base station performs weighting processing on the M first signals to obtain N second signals: the base station groups the M first signals into a vector P, and obtains a weight matrix, where the weight matrix includes N sets of vectors. Each group of vectors includes M variables, and any two adjacent vectors in the weight matrix are orthogonal, and the modulus of each group of vectors is 1, and the base station obtains N second signals according to the weight matrix and the vector P.

It should be noted that the group vector of the weight matrix in the embodiment of the present invention may be a row vector of the weight matrix, or may be a column vector of the weight matrix, which is not limited in the embodiment of the present invention.

Specifically, if the group vector of the weight matrix is a row vector of the weight matrix, the weight matrix includes N row vectors, each row vector includes M variables, and any adjacent two rows in the weight matrix The vectors are orthogonal and the modulus of each row vector is one.

If the group vector of the weight matrix is a column vector of the weight matrix, the weight matrix includes N column vectors, each column vector includes M variables, and any two adjacent column vectors in the weight matrix are orthogonal And the modulus of each column vector is 1.

The base station obtains the N second signals according to the weight matrix and the vector P, and the base station multiplies the weight matrix and the vector P to obtain N second signals; or the base station obtains the inverse matrix of the weight matrix, The inverse matrix of the weight matrix is multiplied by the vector P to obtain N second signals, which are not specifically limited in the embodiment of the present invention.

Further, according to actual needs, the multiplication of the weight matrix and the vector P may be a weight matrix left cross multiplication vector P, or may be a weight matrix right fork multiplication vector P.

Illustratively, the weight matrix B and the vector P obtain the N second signals using the following formula:

A=B×P

among them,

P ^M-1 represents the Mth first signal, and A is a vector composed of N second signals,

P _N-1 represents the Nth second signal,

For the variable of the Mth row and the Nth column in the weight matrix B, each row vector of the weight matrix B is a normalized vector, that is, the modulus of each row vector of the weight matrix B is 1, and the weight matrix Any two adjacent row vectors in B are orthogonal.

Preferably, the weight matrix B is a unitary matrix.

Exemplarily, if M=2, N=2, weight matrix

then,

Specifically, after weighting the M first signals to obtain N second signals, the base station transmits the N second signals one by one through the antenna corresponding to the N physical ports. The signals of any two adjacent physical ports of the N physical ports are irrelevant.

Specifically, the physical port in the embodiment of the present invention refers to a port of the remote device. The remote device in the embodiment of the present invention is an RRU.

It should be noted that two adjacent physical ports in the embodiment of the present invention refer to two physical ports that are closest in a certain plane of the space.

It can be understood that two adjacent physical ports may be two physical ports that are closest to each other on the same horizontal plane, or two physical ports that are closest to each other on the same vertical plane.

The N physical ports in the embodiment of the present invention have the following scenarios:

Scenario 1: The N physical ports are composed of N single-issue and single-receiving ports of the remote device.

Scenario 2: The number of ports on the remote device is N. The number of ports on the remote device is N.

Scenario 3: The N physical ports are composed of at least two ports of the multi-receiving remote device. The number of ports of the first remote device is n, 2≤n<N, and the first remote device is at least two multiple transmissions. Any of the remote devices.

Scenario 4: The N physical ports are composed of m single-issue single-receiving remote device ports and y-multi-transmission and remote-receiving remote device ports, m≥1, y≥1.

Specifically, in scenario 1, the base station transmits the N second signals one by one through the antenna corresponding to the ports of the N single-issue single-receiving remote devices, where any of the N single-issue single-receiving remote devices The signals of the ports of two adjacent single-issue remote devices are irrelevant.

Exemplarily, as shown in FIG. 4, RRU1 and RRU2 are both single-shot and single-receiving, and RRU1 is adjacent to RRU2, and the signal transmitted by the antenna corresponding to the port of the RRU1 and the signal transmitted by the antenna corresponding to the port of the RRU2. It is irrelevant. The signal transmitted by antenna 1 corresponding to the port of RRU1 is

The signal transmitted by the antenna 2 corresponding to the port of the RRU 2 is

The two signals in the area covered by the signals transmitted by the antenna 1 and the antenna 2 (signal coverage overlap area) are irrelevant. Therefore, the signal coverage overlap area can effectively support multi-stream multiplexing and improve system capacity. For the terminal in the signal coverage overlap region, two different signals are received, and the two signals are uncorrelated, and the terminal can accurately demodulate the two first signals P ⁰ and P ¹ , thereby not causing resources. waste.

Specifically, in scenario 2, the base station transmits the N second signals one by one correspondingly through the antenna corresponding to the port of the remote multi-receiving remote device, where any of the N ports of the remote device is multi-transmitted and received. The signal of the port is irrelevant.

Exemplarily, as shown in FIG. 5, in the figure, 2T2R indicates dual-transmitting and dual-receiving, and the RRU is dual-transmitting and dual-receiving, and the RRU has two physical ports, and the antennas corresponding to the two physical ports are antenna 1 and antenna 2, respectively. . The second signal is transmitted through the antenna corresponding to the two ports of the RRU, and the signals of the two ports of the RRU are irrelevant, and the signal transmitted by the antenna 1 corresponding to one of the ports of the RRU is

The signal transmitted by the antenna 2 corresponding to another port of the RRU is

The signal transmitted by antenna 1 and the signal transmitted by antenna 2 are irrelevant.

Specifically, in scenario 3, the base station transmits the N second signals one by one through the antenna corresponding to the port of the at least two remote devices, where any adjacent one of the n ports of the first remote device The signal of the port is irrelevant, and the signal of the port of the first remote device adjacent to the second remote device is irrelevant, and the first remote device is adjacent to the second remote device.

Specifically, in scenario 4, the base station transmits the m signals of the N second signals one by one through the antenna corresponding to the ports of the m single-issue single-receiving remote devices, and sends the N second signals. The Nm signals are correspondingly transmitted by the antenna corresponding to the port of the y multi-transmission and remote receiving device, wherein, m of the single-issue and single-receiving remote devices are adjacent to each other The signal of the port is irrelevant, the third remote device is any one of the single-transmitting and receiving remote devices, and the fourth remote device is any one of the multiple transmitting and receiving remote devices, and the fourth remote device is more The signals of any adjacent ports of the ports are irrelevant, the signals of the ports of the remote device adjacent to the fourth remote device are irrelevant, and the third remote device is adjacent to the fourth remote device.

In summary, the signal processing method provided by the embodiment of the present invention makes the signals of two adjacent physical ports in the system uncorrelated, and the signals corresponding to the signals transmitted by the antennas corresponding to the two physical ports (signal) The two signals in the overlay overlap area are irrelevant. Therefore, the signal coverage overlap area can effectively support multi-stream multiplexing and improve system capacity. For the terminal in the signal coverage overlapping area, two different signals are received, and the two signals are uncorrelated, and the terminal can accurately demodulate the first signal, thereby causing no waste of resources.

It should be noted that, if the total number D of physical ports in the system is greater than the number M of the first signals, the base station may equally divide the physical ports by the number N, and then transmit the second signal through the antenna corresponding to each part of the physical ports. . That is, after the base station divides the physical ports by the number N, the base station executes S101-S103 cyclically. When the base station performs S101-S103 cyclically, it also needs to ensure that the signals of any two adjacent physical ports in the system are irrelevant.

Exemplarily, as shown in FIG. 6, if a four-story building has a single-issue RRU on each floor, the total number of physical ports in the building is four, and the port of the RRU1 is a port. 1. The port of RRU2 is port 2, the port of RRU3 is port 3, the port of RRU4 is port 4, and the first signal in the system has only two P ⁰ and P ¹ .

The base station divides four ports into two groups (group A and group B), group A includes port 1 and port 2, and group B includes port 3 and port 4, and the base station obtains weighting processing for P ⁰ and P ¹ to obtain

with

The two second signals are then transmitted through the antenna corresponding to one of the ports, and then the two second signals are transmitted through the antenna corresponding to the other group of ports.

Specifically, the base station will

with

First transmit through the antenna corresponding to port 1 and port 2 in group A, so that the signals transmitted by antenna 1 and antenna 2 are irrelevant, and then

with

The antennas transmitted by the ports 3 and 4 in the group B are transmitted such that the signals transmitted by the antennas 3 and 4 are not correlated. Since RRU2 and RRU3 are also adjacent in FIG. 6, when the base station transmits the second signal, it is also necessary to make the signals of port 2 and port 3 uncorrelated, that is, the signals transmitted by antenna 2 and antenna 3 are irrelevant.

It can be understood that, since some existing networks are deployed, there is often a single-single-receiving remote device to support the scenario of signal transmission of at least two floors. For the network deployment scenario, the signal processing method provided by the embodiment of the present invention can solve the problem that the partial signal coverage overlap region cannot support the multi-stream multiplexing, and the system can be improved to some extent as compared with the prior art. capacity. Reduce waste of resources.

Illustratively, as shown in FIG. 7, if a four-story building has a single-issue RRU on every two floors, RRU1 is deployed between the first floor and the second floor, so that the first floor and the second floor are The signals transmitted by the antennas are the same. RRU2 is deployed between the third and fourth floors. The signals transmitted on the third and fourth floors are the same, and RRU1 and RRU2 are adjacent. The first signals in the system are P ⁰ and P ¹ , and the base station obtains weighting processing on P ⁰ and P ¹ to obtain

with

Two second signals are then transmitted through the port corresponding to the port of RRU1 and the port of RRU2, and the signals of the port of RRU1 and the port of RRU2 are irrelevant, and the antenna 2 and antenna 3 are transmitted. The signal is uncorrelated. Therefore, the signal processing method provided by the embodiment of the present invention can effectively improve the system capacity of the signal coverage overlapping area of the antenna 2 and the antenna 3, and reduce resource waste.

The embodiment of the invention provides a signal processing method. After generating the M (M≥2) first signals, the base station performs weighting processing on the M first signals to obtain N second signals, where N second At least two signals in the signal are uncorrelated, each of the N second signals is synthesized by at least two first signals, N is the number of physical ports, N≥2, and N≤M, then The base station transmits the N second signals one by one through an antenna corresponding to the N physical ports, where The signals of any two adjacent physical ports of the N physical ports are irrelevant.

In this solution, the base station maps the M first signals into N second signals by using a weighting process, and transmits the N second signals one by one through the antenna corresponding to the N physical ports. Since each of the N second signals is synthesized by at least two first signals, the signal transmitted by the antenna corresponding to each physical port is synthesized by at least two first signals, and N At least two signals of the second signal are uncorrelated, and signals of any two adjacent physical ports of the N physical ports are irrelevant, and therefore, antennas corresponding to any two adjacent physical ports are transmitted. The signal is irrelevant, so that the signal coverage overlap region can support multi-stream multiplexing, thereby increasing system capacity. In addition, when the terminal in the signal coverage overlap region receives the signal transmitted by the antenna, the terminal receives the received signal. The signal can also accurately parse each first signal without wasting resources.

Embodiment 2

The present invention provides a base station 1. As shown in FIG. 8, the base station 1 includes a generating unit 10, a processing unit 11, and a transmitting unit 12.

Specifically, the generating unit 10 is configured to generate M first signals, where M≥2.

Specifically, the processing unit 11 is configured to perform weighting processing on the M first signals generated by the generating unit 10 to obtain N second signals, where at least two of the N second signals are Uncorrelated, each of the N second signals is composed of at least two first signals, the N being the number of physical ports, the N≥2, and N≤M.

Specifically, the sending unit 12 is configured to transmit, by the antennas corresponding to the N physical ports, the N second signals obtained by the processing unit 11 in a one-to-one correspondence, wherein any of the N physical ports The signals of the two physical ports of the neighbor are irrelevant.

Further, the processing unit 11 is specifically configured to combine the M first signals into a vector P, and to obtain a weight matrix, where the weight matrix includes N sets of vectors, and each set of vectors includes M a variable, any two adjacent sets of vectors in the weight matrix are orthogonal, and the modulus of each set of vectors is 1, and is used to obtain N second signals according to the weight matrix and the vector P.

Further, the processing unit 11 is specifically configured to multiply the weight matrix and the vector P to obtain N second signals.

Further, the N physical ports are composed of N single-issue single-receiving remote device ports. then,

The sending unit 12 is configured to transmit, by the antennas corresponding to the ports of the N single-issue and remote receiving devices, the N second-signal-received remote devices. The signals of the ports of any two adjacent single-receiving remote devices are irrelevant.

Further, the N physical ports are ports of a multi-transmission remote device, and the number of ports of the multi-transmission remote device is N, then,

The sending unit 12 is configured to transmit, by using the antenna corresponding to the port of the multi-receiving remote device, the N second signals to be connected one by one, wherein the multi-transmitting and receiving remote device N The signals of any adjacent ports in the ports are irrelevant.

Further, the N physical ports are composed of ports of at least two multi-receiving and remote devices, the number of ports of the first remote device is n, 2≤n<N, and the first remote device is at least two. Any one of multiple remote devices, then,

The sending unit 12 is configured to transmit, by the antennas corresponding to the ports of the at least two remote devices, the N second signals are one-to-one, wherein the n ports of the first remote device are The signals of any adjacent ports are irrelevant, and the signals of the ports of the first remote device adjacent to the second remote device are irrelevant, the first remote device and the second remote device The devices are adjacent.

Further, the N physical ports are composed of ports of the single-issue single-receiving remote device and ports of the y-multiple-receiving remote device, where m≥1, y≥1,

The sending unit 12 is configured to: transmit, by the m corresponding ones of the N second signals, the antennas corresponding to the ports of the m single-issue remote receiving devices, and send the N The Nm signals in the second signal are correspondingly transmitted by the antenna corresponding to the port of the y multi-transmission remote device, wherein any two adjacent ones of the m single-issue single-receiving remote devices The signal of the port of the remote receiving device is irrelevant, the third remote device is any one of the single-transmitting and receiving remote devices, and the fourth remote device is any one of the multiple transmitting and receiving remote devices. The signals of any adjacent ones of the plurality of ports of the fourth remote device are irrelevant, and the signals of the ports of the third remote device adjacent to the fourth remote device are irrelevant, the third far The end device is adjacent to the fourth remote device.

An embodiment of the present invention provides a base station, including a generating unit, a processing unit, and a sending unit. After generating the M (M≥2) first signals, the base station performs weighting processing on the M first signals. Obtaining N second signals, wherein at least two of the N second signals are uncorrelated, each of the N second signals is synthesized by at least two first signals, and N is a physical port The number, N ≥ 2, and N ≤ M, then, the base station transmits the N second signals one by one through the antenna corresponding to the N physical ports, wherein any two physical ports adjacent to the N physical ports The signal is irrelevant.

Embodiment 3

The embodiment of the present invention provides a base station. As shown in FIG. 9, the base station includes a processor 20, a transceiver 21, a memory 22, and a system bus 23, where

The processor 20, the transceiver 21 and the memory 22 are connected by a system bus 23 and communicate with each other.

Processor 20 may be a single core or multi-core central processor, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 22 may be a high speed RAM or a nonvolatile memory such as at least one disk memory.

Specifically, the processor 20 is configured to generate M first signals, where M≥2, and perform weighting processing on the generated M first signals to obtain N second signals, where At least two of the N second signals are uncorrelated, each of the N second signals is composed of at least two first signals, the N being the number of physical ports, the N ≥ 2, and N ≤ M.

Specifically, the transceiver 21 is configured to obtain the N seconds obtained by the processor 20 The signals are transmitted one by one through the antenna corresponding to the N physical ports, wherein the signals of any two adjacent physical ports of the N physical ports are irrelevant.

Further, the processor 20 is specifically configured to form the M first signals into a vector P, and to obtain a weight matrix, where the weight matrix includes N sets of vectors, and each set of vectors includes M a variable, any two adjacent sets of vectors in the weight matrix are orthogonal, and the modulus of each set of vectors is 1, and is used to obtain N second signals according to the weight matrix and the vector P.

Further, the processor 20 is specifically configured to multiply the weight matrix and the vector P to obtain N second signals.

Further, the N physical ports are composed of N single-issue single-receiving remote device ports,

The transceiver 21 is configured to transmit, by the antennas corresponding to the ports of the N single-receipt and remote receiving devices, the N second signals are in a one-to-one correspondence, wherein the N single-issue single-receiving remote devices are The signals of the ports of any two adjacent single-receiving remote devices are irrelevant.

The transceiver 21 is configured to transmit, by using the antenna corresponding to the port of the multi-receiving remote device, the N second signals to be connected one by one. The signals of any adjacent ports in the ports are irrelevant.

The transceiver 21 is configured to transmit, by the antennas corresponding to the ports of the at least two remote devices, the N second signals are in a one-to-one correspondence, where the n ports of the first remote device are The signals of any adjacent ports are irrelevant, and the signals of the ports of the first remote device adjacent to the second remote device are irrelevant, the first remote device and the second remote device The devices are adjacent.

The transceiver 21 is configured to transmit, by using the antennas corresponding to the ports of the m single-issue remote receiving devices, the m signals of the N second signals are one-to-one, and the N is The Nm signals in the second signal are correspondingly transmitted by the antenna corresponding to the port of the y multi-transmitting and receiving remote device, wherein any two adjacent ones of the m single-issue single-receiving remote devices The signal of the port that receives the remote device is irrelevant, the third remote device is any one of the single-transmission remote receiving devices, and the fourth remote device is any one of the multiple transmitting and receiving remote devices. The signals of any adjacent ones of the plurality of ports of the fourth remote device are irrelevant, and the signals of the ports of the third remote device adjacent to the fourth remote device are irrelevant, the third The remote device is adjacent to the fourth remote device.

The embodiment of the present invention provides a base station, after generating M (M ≥ 2) first signals, performing weighting processing on the M first signals to obtain N second signals, where N second signals are included At least two signals are uncorrelated, each of the N second signals is synthesized by at least two first signals, N is the number of physical ports, N≥2, and N≤M, then the base station will The N second signals are correspondingly transmitted through antennas corresponding to the N physical ports, wherein signals of any two adjacent physical ports of the N physical ports are irrelevant.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, device And methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or 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 in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It is within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A signal processing method, comprising:

Generating M first signals, the M≥2;

Weighting the M first signals to obtain N second signals, at least two of the N second signals are uncorrelated, and each of the N second signals is Synthesizing at least two first signals, the N being the number of physical ports, the N≥2, and N≤M;

The N second signals are correspondingly transmitted through antennas corresponding to the N physical ports, wherein signals of any two adjacent physical ports of the N physical ports are irrelevant.
The signal processing method according to claim 1, wherein the weighting the M first signals to obtain the N second signals comprises:

Combining the M first signals into a vector P;

Obtaining a weight matrix, wherein the weight matrix comprises N sets of vectors, each set of vectors comprising M variables, wherein any two adjacent sets of vectors in the weight matrix are orthogonal, and each set of vectors has a modulus of 1 ;

According to the weight matrix and the vector P, N second signals are obtained.
The signal processing method according to claim 2, wherein the obtaining the N second signals according to the weight matrix and the vector P comprises:

Multiplying the weight matrix and the vector P to obtain N second signals.
The signal processing method according to claim 1 or 2, wherein the N physical ports are composed of N single-issue single-receiving remote device ports, and the N second signals are corresponding to each other. The antenna is transmitted through the corresponding physical ports of the N physical ports, including:

Transmitting, by the antennas corresponding to the ports of the N single-issue remote receiving devices, the N second single-signal one-to-one correspondence, wherein any two adjacent single-transmitters of the N single-issue single-receiving remote devices The signal of the port of the remote receiving device is irrelevant.
The signal processing method according to claim 1 or 2, wherein the N physical ports are ports of a multi-transmission remote device, and the number of ports of the multi-transmission remote device is N, The N second signals are correspondingly transmitted by the antennas corresponding to the N physical ports, and specifically include:

Passing the N second signals one by one through the port of the multiple transmit and receive remote device Corresponding antenna transmission, wherein signals of any adjacent one of the N ports of the multi-transmitter remote device are irrelevant.
The signal processing method according to claim 1 or 2, wherein the N physical ports are composed of ports of at least two multiple transmitting and receiving remote devices, and the number of ports of the first remote device is n, 2 ≤ n<N, the first remote device is any one of the at least two multiple transmit and receive remote devices, and the N second signals are correspondingly transmitted through the antennas corresponding to the N physical ports, including :

And transmitting, by the antennas corresponding to the ports of the at least two remote devices, the signals of any adjacent one of the n ports of the first remote device are not Correspondingly, the signal of the port of the first remote device adjacent to the second remote device is irrelevant, and the first remote device is adjacent to the second remote device.
The signal processing method according to claim 1 or 2, wherein the N physical ports are composed of m single-issue single-receiving remote device ports and y-multi-transmission and multi-receiving remote device ports, m≥ 1, y ≥ 1, the N second signals are one-to-one correspondingly transmitted through the antennas corresponding to the N physical ports, specifically including:

Transmitting, by the m signals of the N second signals one by one, the antennas corresponding to the ports of the m single-transmitting and receiving remote devices, and the Nm signals of the N second signals are one by one The corresponding antenna is transmitted by the port corresponding to the port of the multi-transmission and remote receiving device, wherein the signals of the ports of any two adjacent single-transmitting and receiving remote devices in the m single-issue and single-receiving remote devices are It is irrelevant, the third remote device is any one of the single-transmission remote receiving devices, and the fourth remote device is any one of the multiple transmitting and receiving remote devices, and the fourth remote device is multiple. The signals of any adjacent ports in the port are irrelevant, and the signals of the ports of the third remote device adjacent to the fourth remote device are irrelevant, and the third remote device and the fourth remote device are not related. The devices are adjacent.
A base station, comprising:

Generating unit, configured to generate M first signals, where M≥2;

a processing unit, configured to perform weighting processing on the M first signals generated by the generating unit, to obtain N second signals, where at least two signals of the N second signals are irrelevant, the N Each of the second signals is composed of at least two first signals, the N being the number of physical ports, the N≥2, and N≤M;

a sending unit, configured to transmit the N second signals obtained by the processing unit in a one-to-one correspondence by an antenna corresponding to the N physical ports, where any two physical ports of the N physical ports are adjacent to each other The signal is irrelevant.
The base station according to claim 8, wherein

The processing unit is specifically configured to combine the M first signals into a vector P, and to obtain a weight matrix, where the weight matrix includes N sets of vectors, and each set of vectors includes M variables. Any two adjacent sets of vectors in the weight matrix are orthogonal, and the modulus of each set of vectors is 1, and is used to obtain N second signals according to the weight matrix and the vector P.
The base station according to claim 9, wherein

The processing unit is specifically configured to multiply the weight matrix and the vector P to obtain N second signals.
A base station according to claim 8 or 9, wherein

The N physical ports are composed of N single-issue single-receiving ports of the remote device,

The sending unit is specifically configured to transmit, by using the antennas corresponding to the ports of the N single-issue and single-receiving remote devices, in which the N second signals are one-to-one, wherein the N single-issue and single-receiving remote devices are The signals of the ports of any two adjacent single-issue remote devices are irrelevant.
A base station according to claim 8 or 9, wherein

The N physical ports are ports of a multi-transmission remote device, and the number of ports of the multi-transmission remote device is N, then,

The sending unit is configured to transmit, by using the antenna corresponding to the port of the multiple transmit and receive remote device, the N second signals are in a one-to-one correspondence, wherein the multiple transmit and receive remote devices are N The signals of any adjacent ports in the port are irrelevant.
A base station according to claim 8 or 9, wherein

The N physical ports are composed of ports of at least two multi-receiving and remote devices, the number of ports of the first remote device is n, 2≤n<N, and the first remote device is at least two multiple Receiving any one of the remote devices, then,

The sending unit is configured to transmit, by the antenna corresponding to the port of the at least two remote devices, the N second signals are in a one-to-one correspondence, wherein any of the n ports of the first remote device The signals of the adjacent ports are irrelevant, and the first remote device is in phase with the second remote device. The signals of the neighboring ports are irrelevant, and the first remote device is adjacent to the second remote device.
A base station according to claim 8 or 9, wherein

The N physical ports are composed of m single-issue single-receiving remote device ports and y-multi-transmission and multi-receiving remote device ports, m≥1, y≥1, then,

The sending unit is configured to: transmit, by the m corresponding ones of the N second signals, the antennas corresponding to the ports of the m single-issue remote receiving devices, and send the N The Nm signals of the two signals are correspondingly transmitted by the antenna corresponding to the port of the CDMA multi-transmission and remote receiving device, wherein any two adjacent single-issues of the m single-issue and single-receiving remote devices The signal of the port of the remote device is irrelevant, the third remote device is any one of the single-transmission remote devices, and the fourth remote device is any one of the multi-transmission remote devices. The signal of any adjacent one of the plurality of ports of the fourth remote device is irrelevant, and the signal of the port of the third remote device adjacent to the fourth remote device is irrelevant, the third remote end The device is adjacent to the fourth remote device.