CN111246492B

CN111246492B - Network architecture and resource allocation method

Info

Publication number: CN111246492B
Application number: CN202010044651.6A
Authority: CN
Inventors: 李海朝; 夏林峰; 李铮铮; 王碧; 张巧明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-07-01
Filing date: 2015-07-01
Publication date: 2021-12-10
Anticipated expiration: 2035-07-01
Also published as: WO2017000717A1; CN106330279A; WO2017000717A9; CN106330279B; CN111246492A

Abstract

The embodiment of the invention discloses a network architecture which is used for supporting an MIMO technology and improving data service capacity. The network architecture comprises: an antenna remote unit and a radio remote unit RRU; the RRU is configured with N ports, the RRU comprises M radio frequency channels, N is a positive integer greater than 1 and less than or equal to M, and at least two of the N ports are different types of ports; the remote antenna unit is connected with the M radio frequency channels in the RRU through the N ports, and any one port corresponds to at least one radio frequency channel.

Description

Network architecture and resource allocation method

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a network architecture and a resource allocation method.

Background

Currently, 80% of data services occur indoors, and a network architecture is deployed indoors to provide services for indoor users, so that the network performance is improved, and the user experience is improved.

At present, an indoor network architecture is shown in fig. 1, and includes a baseband processing Unit (BBU), a Radio Remote Unit (RRU), a power divider and an antennal Remote Unit, where the BBU is connected to the RRU through an optical Fiber (english: Fiber), the RRU is externally connected to the power divider through a Radio feeder, the power divider divides power evenly, and the power divider is connected to the antennal Remote units Ant 0-Ant N through Radio feeders, and N is a positive integer. As shown in fig. 2, which is a schematic view of coverage of the indoor network corresponding to fig. 1, all the remote antenna units are configured to only one port, and only the same signal can be transmitted, which cannot support a Multiple-Input Multiple-output (MIMO) technology, and thus, data service capacity is limited.

Disclosure of Invention

The embodiment of the invention provides a network architecture and a resource allocation method, which are used for supporting the MIMO technology and improving the data service capacity.

A first aspect of the present invention provides a network architecture comprising: an antenna remote unit and a radio remote unit RRU;

the RRU is configured with N ports, the RRU comprises M radio frequency channels, N is a positive integer greater than 1 and less than or equal to M, and at least two of the N ports are different types of ports;

the remote antenna unit is connected with the M radio frequency channels in the RRU through the N ports, and any one port corresponds to at least one radio frequency channel.

With reference to the first aspect, in a first possible implementation manner,

the N ports comprise two different types of ports, and the two different types of ports are configured in an interlaced mode.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the antenna remote unit includes N antennas, and each antenna of the N antennas corresponds to one port;

or, the antenna remote unit includes N antenna groups, each of the N antenna groups corresponds to one port, each antenna group includes at least two antennas, and the at least two antennas are antennas configured adjacently or in a staggered manner.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, when the remote antenna unit includes N antenna groups, the network architecture further includes N power dividers;

each power divider of the N power dividers is connected to one antenna group of the N antenna groups through a feeder, and is connected to M radio frequency channels of the RRU through a port corresponding to the one antenna group.

With reference to the first aspect, in a fourth possible implementation manner, the network architecture further includes:

a baseband processing unit BBU and a HUB HUB;

the HUB is respectively connected with the BBU and the RRU;

the HUB is connected with the BBU through an optical fiber, and the HUB is connected with the RRU through a network cable.

With reference to the first aspect, in a fifth possible implementation manner,

the antenna remote unit is connected with the RRU through a feeder line.

A second aspect of the present invention provides a method for implementing resource allocation by using a network architecture, where the network architecture is as described in the first aspect, and the method includes:

determining a channel group for resource configuration of User Equipment (UE), wherein the channel group comprises a first channel group determined according to N ports in an antenna remote unit or a second channel group determined according to M radio frequency channels in the radio frequency remote unit, the first channel group comprises N first channels, the second channel group comprises M second channels, and N is a positive integer greater than 1 and less than or equal to M;

and carrying out resource configuration on the UE according to the determined channel group.

With reference to the second aspect, in a first possible implementation manner, the performing resource configuration on the UE according to the determined group of channels includes:

when resource configuration is carried out on the UE according to the first channel group, acquiring the signal power of reference signals (SRS) corresponding to the UE on N first channels in the first channel group;

determining a first channel meeting a preset requirement according to the SRS signal power;

and configuring resources to the UE on the first channel meeting the preset requirement.

With reference to the second aspect, in a second possible implementation manner, the performing resource configuration on the UE according to the determined group of channels includes:

when resource allocation is carried out on the UE according to the second channel group, channel information of SRS corresponding to the UE on M second channels in the second channel group is obtained;

determining a second channel meeting a preset requirement according to the SRS channel information;

and configuring resources to the UE on the second channel meeting the preset requirement.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner, before configuring resources to the UE on the second channel that meets the preset requirement, the method further includes:

and calculating the characteristic vector of the UE according to the SRS channel information.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the calculating a feature vector of the UE according to the SRS signal information includes:

and decomposing the signal information of the SRS by the BBU through a Singular Value Decomposition (SVD) algorithm, and calculating the characteristic vector of the UE.

With reference to the second aspect or any one of the first to fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, the configuring, to the UE, resources on the second channel that meets the preset requirement includes:

selecting first UE from the UE according to a user priority principle, wherein the first UE is the UE with the first highest priority;

and configuring resources to the first UE on the second channel meeting the preset requirement.

With reference to the second aspect or any one of the first to fourth possible implementation manners of the second aspect, in a sixth possible implementation manner, the configuring, to the UE, resources on the second channel that meets the preset requirement includes:

selecting a second UE and a third UE from the UEs according to a user priority principle, wherein the second UE is the UE with the first highest priority, and the third UE is the UE with the second highest priority;

calculating an inner product of the feature vectors of the second UE and the third UE;

and when the inner product of the feature vectors of the second UE and the third UE is smaller than a preset threshold value, configuring resources to the second UE and the third UE on the second channel meeting the preset requirement.

With reference to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner, after configuring resources to the second UE and the third UE on the second channel that meets the preset requirement, the method further includes:

and performing zero forcing on the feature vectors of the second UE and the third UE according to a zero forcing EZF increasing algorithm, and mapping the feature vectors of the second UE and the third UE after zero forcing to the second channel which meets the preset requirement.

A third aspect of the present invention provides an apparatus for resource allocation, including: a processing module;

the processing module is configured to determine a channel group for resource configuration of user equipment UE, where the channel group includes a first channel group determined according to N ports in an antenna remote unit or a second channel group determined according to M radio frequency channels in the radio frequency remote unit, the first channel group includes N first channels, the second channel group includes M second channels, and N is a positive integer greater than 1 and less than or equal to M;

the processing module is further configured to perform resource configuration on the UE according to the determined channel group.

With reference to the third aspect, in a first possible implementation manner,

the processing module is specifically configured to, when resource configuration is performed on the UE according to the first channel group, obtain signal powers of reference signals SRS corresponding to the UE on N first channels in the first channel group, determine a first channel meeting a preset requirement according to the signal powers of the SRS, and configure resources to the UE on the first channel meeting the preset requirement.

With reference to the third aspect, in a second possible implementation manner,

the processing module is specifically configured to, when resource configuration is performed on the UE according to the second channel group, acquire channel information of SRSs corresponding to the UE on M second channels in the second channel group, determine a second channel meeting a preset requirement according to the channel information of the SRS, and configure resources to the UE on the second channel meeting the preset requirement.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner,

the processing module is further configured to calculate a feature vector of the UE according to the channel information of the SRS before configuring resources to the UE on the second channel that meets the preset requirement.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner,

the processing module is specifically configured to decompose the SRS signal information by using a singular value decomposition algorithm SVD, and calculate a feature vector of the UE.

With reference to the third aspect or any one of the first to fourth possible implementation manners of the third aspect, in a fifth possible implementation manner,

the processing module is specifically configured to select a first UE from the UEs according to a user priority principle, where the first UE is a UE with a first highest priority, and configure resources to the first UE on the second channel that meets the preset requirement.

With reference to the third aspect or any one of the first to fourth possible implementation manners of the third aspect, in a sixth possible implementation manner,

the processing module is specifically configured to select a second UE and a third UE from the UEs according to a user priority principle, where the second UE is a UE with a first priority, and the third UE is a UE with a second priority, calculate an inner product of feature vectors of the second UE and the third UE, and configure resources to the second UE and the third UE on the second channel that meets a preset requirement when the inner product of the feature vectors of the second UE and the third UE is smaller than a preset threshold.

With reference to the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner,

the processing module is further configured to, after configuring resources to the second UE and the third UE on the second channel meeting the preset requirement, perform zero forcing on the feature vectors of the second UE and the third UE according to a zero forcing EZF increasing algorithm, and map the feature vectors of the second UE and the third UE after zero forcing onto the second channel meeting the preset requirement.

By applying the technical scheme, the network architecture comprises an antenna remote unit and a radio remote unit RRU; the RRU is configured with N ports, the RRU comprises M radio frequency channels, N is a positive integer greater than 1 and less than or equal to M, at least two of the N ports are different types of ports, the RRU is connected with the M radio frequency channels in the RRU through the N ports, and any one port corresponds to at least one radio frequency channel. One signal can be correspondingly sent through any type of port, and multiple different signals are sent through N ports configured by the remote antenna unit, so that the MIMO technology is supported, and the data service capacity is effectively improved.

Drawings

FIG. 1 is a schematic diagram of a network architecture in the prior art;

FIG. 2 is a diagram illustrating network coverage in the prior art;

FIG. 3 is a schematic diagram of an embodiment of a network architecture in accordance with an embodiment of the invention;

FIG. 4 is a schematic diagram of another embodiment of a network architecture in an embodiment of the invention;

FIG. 5 is a diagram of an embodiment of a method for resource allocation according to an embodiment of the present invention;

FIG. 6 is a diagram of another embodiment of a method for resource allocation according to an embodiment of the present invention;

FIG. 7 is a diagram of another embodiment of a method for resource allocation according to an embodiment of the present invention;

FIG. 8 is a diagram of an embodiment of an apparatus for resource allocation according to an embodiment of the present invention;

FIG. 9 is a diagram of another embodiment of an apparatus for resource allocation according to an embodiment of the present invention;

fig. 10a-10b are a schematic structural diagram of a network architecture and a corresponding schematic network coverage diagram in an application scenario according to an embodiment of the present invention;

fig. 11a to 11b are another schematic structural diagram of a network architecture under an application scenario and a corresponding schematic network coverage diagram in the embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the signals so used may be interchanged under appropriate circumstances such that the embodiments described herein may be implemented in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the terminology used in the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The various techniques described herein may be used for various communication systems including 2G, 3G communication systems and next generation communication systems, such as 2G communication systems like global system for mobile communication (GSM), 3G communication systems like Wideband Code Division Multiple Access (WCDMA), time division synchronous code division multiple access (TD-SCDMA), time division-synchronization code division multiple access (time division-multiple access), Long Term Evolution (LTE), and their subsequent evolution systems.

User Equipment (UE), also referred to as Mobile Terminal (Mobile Terminal), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers having Mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, that exchange languages and/or signals with the Radio Access Network.

The technical scheme provided by the embodiment of the invention can be used for various indoor environments, such as airport halls, exhibition halls, supermarkets, libraries, underground parking lots, mines, office buildings and other places.

Referring to fig. 3, an embodiment of a network architecture according to the embodiment of the present invention includes: an antenna remote unit 301, a radio remote unit RRU 302;

the remote antenna unit 301 is configured with N ports 3011, where the RRU302 includes M radio frequency channels 3021, N is a positive integer greater than 1 and less than or equal to M, and at least two ports of the N ports are different types of ports;

in the embodiment of the invention, different types of ports correspondingly send different signals, wherein the different types of ports are specifically ports with different models, and the ports with different models can support signals with different frequencies. In addition, in some alternative embodiments, the different types of ports may also be configured differently, and are not limited herein.

The remote antenna unit is a component for transmitting or receiving electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all utilize electromagnetic waves to transmit information and rely on remote antenna units to work. In addition, in transmitting energy with electromagnetic waves, non-signal energy radiation also requires a remote unit.

For example: the remote antenna unit is connected to one radio frequency channel through one port, or the remote antenna unit is connected to a plurality of radio frequency channels through one port, and the specific connection mode is determined according to the practical application, and is not specifically limited herein.

It should be noted that, in the embodiment of the present invention, there is at least one RRU, which is not specifically limited herein.

In the embodiment of the invention, at least two ports in the N ports are different types of ports, each different type of port can correspondingly send a signal, or a plurality of ports of the same type correspondingly send a signal, and the N ports are utilized to send a plurality of different signals, thereby supporting the MIMO technology and effectively improving the data service capacity.

Referring to fig. 4, based on the embodiment shown in fig. 3, another embodiment of the network architecture in the embodiment of the present invention includes:

the system comprises a remote antenna unit 401, an RRU402, a HUB HUB403 and a baseband processing unit BBU 404.

The remote antenna unit 401 is configured with N ports 4011, the RRU402 includes M radio frequency channels 4021, N is a positive integer greater than 1 and less than or equal to M, and at least two ports of the N ports are different types of ports;

namely: the remote antenna unit is connected with the M radio frequency channels in the RRU through the N ports, and any one port corresponds to at least one radio frequency channel.

The remote antenna unit is connected with the RRU through a feeder line. The feeder line can effectively transmit signals between the remote antenna unit and the RRU, distortion is small, loss is small, interference resistance is high, a common feeder line is a coaxial feeder line with characteristic impedance of 50 ohms, and the coaxial feeder line is provided with a metal shielding layer, so that the interference resistance is high, and transmission loss is low.

Different from the prior art, the remote antenna unit in the embodiment of the present invention is configured with N ports, so that the connection between the remote antenna unit and the RRU is performed through the feeder, and the feeder distance required for the connection is shorter than that required in the prior art, generally less than 10 meters, and since the feeder wiring cost is high and the feeder wiring distance exceeds 10 meters, power consumption loss is caused.

Optionally, the N ports 4011 include two different types of ports, where the two different types of ports are configured in an interleaved manner, and each corresponding type of port sends a signal, for example: the N ports include two different types of port0 and port1, and port0 and port1 are configured in an interleaving manner, for example, port0, port1, port0, and port1 … are sequentially configured in an interleaving manner, so that the data volume of the UE can be increased to a greater extent. After the mismatch is carried out through the port0 and the port1, two different signals are respectively sent, thereby supporting the MIMO technology and reducing the cost.

Optionally, the remote antenna unit 401 includes N antennas, where each of the N antennas corresponds to one of the ports;

for example: the N antennas respectively correspond to one port, and assuming that the types of each port are different, the N ports corresponding to the N antennas can transmit N different signals at most.

Alternatively, the remote antenna unit 401 includes N antenna groups, each antenna group in the N antenna groups corresponds to one port, each antenna group includes at least two antennas, the at least two antennas are antennas configured adjacently or in a staggered manner, for example, the antennas Ant0 to Ant6 are arranged in sequence, and the antenna groups Ant0, Ant1, Ant2 and Ant3 are selected as one antenna group, or Ant0, Ant2, Ant4 and Ant6 are selected as one antenna group.

For example: grouping all antennas, each antenna group comprising at least two antennas, each antenna group corresponding to one port, wherein the antennas in each antenna group are adjacent or staggered antennas, and assuming that each antenna group has 2 antennas, for example: adjacent antennas Ant0, Ant1 are one antenna group, Ant2 and Ant3 are one antenna group, or correspondingly, staggered antennas Ant0, Ant2 are one antenna group, and Ant1 and Ant3 are one antenna group.

It should be noted that the type of the port corresponding to each antenna group may be the same or different, and in some alternative embodiments, a plurality of antenna groups may also correspond to one port, which is not specifically limited herein.

Optionally, when the remote antenna unit 401 includes N antenna groups, the network architecture further includes N power dividers;

The HUB403 is respectively connected with the BBU404 and the RRU 402;

the HUB is connected with the BBU through optical fibers, and interference among the UEs on different channels can be greatly reduced through optical fiber transmission.

The HUB is connected with the RRU through network cables, the insulation distance between the network cables is small, the occupied space is small, the HUB is laid underground without occupying space above the ground, the HUB is not influenced by the pollution of the surrounding environment, and the transmission speed is high. The network cable in the embodiment of the present invention may be an ultra-5-class cable cat5e or a 6-class twisted pair cat6, and the like, and is not limited herein specifically, wherein the transmission speed of cat5e may be as high as 1000 Mbps.

It should be noted that in the embodiment of the present invention, there is at least one RRU, and one RRU corresponds to one HUB.

The working link for implementing signal flow from the BBU to the remote antenna unit according to the network architecture is further described below:

the M radio frequency channels 4021 are configured to send a first signal to the remote antenna unit 401 through the N ports 4011; the N ports may support a first signal including at least two different frequencies, because at least two of the N ports are different types of ports.

The remote antenna unit 401 is configured to receive the first signal from the M radio frequency channels 4021 in the RRU402 through the N ports 4011.

In this embodiment of the present invention, the remote antenna unit may receive the same signal or different signals from the RRU through N ports, which is not limited herein.

The HUB403 is configured to receive a second signal from the BBU404, and send the second signal to the M radio frequency channels 4021 in the RRU402, where the M radio frequency channels 4021 process the second signal to form the first signal;

in the embodiment of the present invention, the HUB has a signal forwarding function, receives a second signal from the BBU, and sends the second signal to the M radio frequency channels in the RRU, where the M radio frequency channels amplify the second signal to form a first signal.

The BBU404 is configured to send the second signal to the HUB 403.

In addition, when the remote antenna unit 401 includes N antenna groups, the power divider is configured to divide the power received from the radio frequency channel 4021 through the port corresponding to the antenna group and send the divided power to the at least two antennas in the antenna group.

The working link of the signal flow from the BBU to the remote antenna unit is described above, and the working link of the signal flow from the remote antenna unit to the BBU is further described below:

the remote antenna unit 401 is further configured to send a third signal to the M radio frequency channels 4021 in the RRU402 through the N ports 4011, where the third signal is a signal obtained by the remote antenna unit 401 from the UE;

the M radio frequency channels 4021 are further configured to receive the third signal from the remote antenna unit 401 through the N ports 4011, and send a fourth signal formed after processing the third signal to the HUB 403;

the HUB403 is further configured to receive the fourth signal from the radio frequency channel 4021, and send the fourth signal to the BBU 404;

the BBU404 is further configured to receive the fourth signal from the HUB403, and perform processing such as demodulation on the fourth signal.

In addition, when the remote antenna unit 401 includes N antenna groups, the power divider is configured to set the powers of the at least two antennas in the antenna group, and send the set power to the radio frequency channel 4021 through the port corresponding to the antenna group.

In the embodiment of the invention, at least two ports in the N ports are different types of ports, each different type of port can correspondingly send a signal, or a plurality of ports of the same type correspondingly send a signal, any two adjacent ports in the N ports are different types of ports, and any different types of ports are configured in a staggered mode, so that the data volume of the UE is increased, the N ports are utilized to send a plurality of different signals, or receive a plurality of different or same signals, thereby supporting the MIMO technology and effectively improving the data service capacity.

On the basis of the embodiments shown in fig. 3 and fig. 4, please refer to fig. 5, an embodiment of a method for resource allocation in the embodiment of the present invention is implemented by applying the network architecture of the embodiment shown in fig. 3 or fig. 4. The embodiment comprises the following steps:

501. determining a channel group for resource configuration of User Equipment (UE);

the channel group comprises a first channel group determined according to N ports in an antenna remote unit or a second channel group determined according to M radio frequency channels in the radio frequency remote unit, the first channel group comprises N first channels, the second channel group comprises M second channels, and N is a positive integer greater than 1 and less than or equal to M;

in practical application, the resource configuration of the UE is specifically performed according to which channel group, and the processing capability of the BBU, the data volume of the current network, or the data volume of the current UE may be referred to, for example, when the data volume of the current network is large, the resource configuration of the UE is performed according to the second channel, and when the data volume of the current network is small, the resource configuration of the UE is performed according to the first channel.

502. And carrying out resource configuration on the UE according to the determined channel group.

And the BBU carries out resource configuration on the UE in sequence according to the priority order of the UE.

In the embodiment of the present invention, a BBU first determines a channel group for performing resource configuration on a UE, and the BBU performs resource configuration on the UE according to the determined channel group, where the channel group includes a first channel group determined according to N ports in a remote antenna unit or a second channel group determined according to M radio frequency channels in the remote radio frequency unit, the first channel group includes N first channels, the second channel group includes M second channels, N is a positive integer greater than 1 and less than or equal to M, and multiple different signals can be sent through the first channel group or the second channel group, so as to support an MIMO technique and effectively improve data service capacity.

Referring to fig. 6, based on the embodiment shown in fig. 5, another embodiment of the method for resource allocation in the embodiment of the present invention includes:

601. when resource allocation is carried out on UE according to a first channel group, acquiring the signal power of reference signals SRS corresponding to the UE on N first channels in the first channel group;

since the first channel group is determined according to the N ports in the remote antenna unit, that is, the signal power of the SRS corresponding to the UE on each port is obtained.

602. Determining a first channel meeting a preset requirement according to the SRS signal power;

when the BBU judges that the SRS signal power meets the preset requirement, the first channel corresponding to the SRS signal power meeting the preset requirement is the first channel meeting the preset requirement.

For example: and when the BBU judges that the signal power of the SRS corresponding to the UE on any one first channel meets the preset requirement, performing resource configuration on the UE on the corresponding first channel.

Or when the BBU judges that the signal power difference of the corresponding SRSs on any two first channels meets the preset requirement, resource allocation is carried out on the UE on the two corresponding first channels.

603. And configuring resources to the UE on the first channel meeting the preset requirement.

After determining the first channel meeting the preset requirement, the BBU selects the UE according to a user priority principle, for example, the user priority of a general voice call is higher than the user priority of web browsing, and after selecting the UE, resources are configured to the UE on the first channel meeting the preset requirement.

In the embodiment of the invention, when the resource configuration is carried out on the UE according to the first channel group, the BBU acquires the signal power of the reference signals SRS corresponding to the UE on the N first channels in the first channel group, the BBU determines the first channel meeting the preset requirement according to the signal power of the SRS, and the BBU configures the resource to the UE on the first channel meeting the preset requirement. Because the first channel group comprises N first channels, different signals can be received and transmitted through the N first channels, thereby supporting the MIMO technology and effectively improving the data service capacity.

Referring to fig. 7, based on the embodiment shown in fig. 6, another embodiment of the method for resource allocation in the embodiment of the present invention includes:

701. when resource allocation is carried out on the UE according to the second channel group, channel information of corresponding SRS on M second channels in the second channel group of the UE is obtained;

in the embodiment of the invention, the feature vector of the UE is calculated by utilizing the channel information of the SRS and the second channel meeting the preset requirement is determined.

702. Calculating a characteristic vector of the UE according to the SRS channel information;

optionally, the BBU decomposes the signal information of the SRS through a singular value decomposition algorithm SVD, and calculates a feature vector of the UE, where the feature vector may be used as a reference feature for resource allocation of the UE according to a priority order, such as: and when the inner product of the feature vectors of the UE1 and the UE2 is smaller than a preset threshold value, the BBU preferentially performs resource configuration on the UE1 and the UE 2.

703. Determining a second channel meeting the preset requirement according to the SRS channel information;

wherein the signal information of the SRS includes channel quality indication information and a channel rank value, such as: and when the channel quality indication information is greater than a preset threshold value and the channel rank value is N, determining that the second channel corresponding to the SRS signal information is the second channel meeting the preset requirement.

In the embodiment of the present invention, the sequence of step 702 and step 703 is not limited.

704. And configuring resources to the UE on the second channel meeting the preset requirement.

In some optional embodiments, configuring the resource to the UE on the second channel meeting the preset requirement includes:

the BBU selects a first UE from the UEs according to a user priority principle, wherein the first UE is the UE with the first highest priority;

and the BBU configures resources to the first UE on a second channel meeting preset requirements.

the BBU selects the second UE and a third UE from the UEs according to a user priority principle, wherein the second UE is the UE with the first highest priority, and the third UE is the UE with the second highest priority;

the BBU calculates an inner product of the feature vectors of the second UE and the third UE;

and when the inner product of the feature vectors of the second UE and the third UE is smaller than a preset threshold value, the BBU configures resources for the second UE and the third UE on the second channel meeting the preset requirement.

In some optional embodiments, after configuring resources to the second UE and the third UE on the second channel meeting the preset requirement, the BBU performs zero forcing on the feature vectors of the second UE and the third UE according to EZF algorithm, and maps the zero-forced feature vectors of the second UE and the third UE onto the second channel meeting the preset requirement.

In the embodiment of the invention, when the resource configuration is carried out on the UE according to the second channel group, the BBU acquires the SRS channel information corresponding to the UE on the M second channels in the second channel group, the BBU calculates the characteristic vector of the UE according to the SRS channel information, the BBU determines the second channel meeting the preset requirement according to the SRS signal information, and the BBU configures the resource to the UE on the second channel meeting the preset requirement.

To facilitate a better understanding of the above-described related methods of embodiments of the present invention, the following also provides related apparatus for cooperating with the above-described methods.

Referring to fig. 8, an embodiment of an apparatus 800 for resource allocation according to an embodiment of the present invention includes: a processing module 801;

the processing module 801 is configured to determine a channel group for resource configuration of a user equipment UE, where the channel group includes a first channel group determined according to N ports in an antenna remote unit or a second channel group determined according to M radio frequency channels in the radio frequency remote unit, the first channel group includes N first channels, the second channel group includes M second channels, and N is a positive integer greater than 1 and less than or equal to M;

the processing module 801 is further configured to perform resource configuration on the UE according to the determined channel group.

Optionally, the processing module 801 is specifically configured to, when resource configuration is performed on the UE according to the first channel group, obtain signal powers of reference signals SRS corresponding to the UE on N first channels in the first channel group, determine a first channel meeting a preset requirement according to the signal powers of the SRS, and configure resources to the UE on the first channel meeting the preset requirement.

Optionally, the processing module 801 is specifically configured to, when resource configuration is performed on the UE according to the second channel group, acquire channel information of SRSs corresponding to the UE on M second channels in the second channel group, determine a second channel meeting a preset requirement according to the channel information of the SRS, and configure resources to the UE on the second channel meeting the preset requirement.

Optionally, the processing module 801 is further configured to calculate a feature vector of the UE according to the channel information of the SRS before configuring resources to the UE on the second channel that meets the preset requirement.

Optionally, the processing module 801 is specifically configured to decompose the SRS signal information by using a singular value decomposition algorithm SVD, and calculate a feature vector of the UE.

Optionally, the processing module 801 is specifically configured to select a first UE from the UEs according to a user priority principle, where the first UE is a UE with a first highest priority, and configure resources to the first UE on the second channel that meets the preset requirement.

Optionally, the processing module 801 is specifically configured to select a second UE and a third UE from the UEs according to a user priority principle, where the second UE is a UE with a first priority, and the third UE is a UE with a second priority, calculate an inner product of feature vectors of the second UE and the third UE, and configure resources to the second UE and the third UE on the second channel that meets a preset requirement when the inner product of the feature vectors of the second UE and the third UE is smaller than a preset threshold.

Optionally, the processing module 801 is further configured to, after configuring resources to the second UE and the third UE on the second channel meeting the preset requirement, perform zero forcing on the feature vectors of the second UE and the third UE according to a zero forcing EZF algorithm, and map the feature vectors of the second UE and the third UE after zero forcing onto the second channel meeting the preset requirement.

The embodiment shown in fig. 8 describes a specific structure of a device for resource allocation from the perspective of a functional module, and the following describes a specific structure of a device for resource allocation from the perspective of hardware in conjunction with the embodiment shown in fig. 9:

referring to fig. 9, fig. 9 is a schematic structural diagram of a device 900 for resource allocation according to an embodiment of the present invention, including a transceiver 901, a memory 902, a processor 903 and a bus 904, where the transceiver 901, the memory 902 and the processor 903 are connected to the bus 904, where:

the transceiver 901 is used for receiving or transmitting data;

the memory 902 is used for storing a program, and the processor 903 is used for calling the program to execute the following operations:

The processor 903 is further configured to perform the following operations:

when resource configuration is carried out on the UE according to the first channel group, the signal power of reference signals SRS corresponding to the UE on N first channels in the first channel group is obtained, the first channel meeting preset requirements is determined according to the signal power of the SRS, and resources are configured for the UE on the first channel meeting the preset requirements.

The processor 903 is further configured to perform the following operations:

when resource allocation is carried out on the UE according to the second channel group, channel information of SRS corresponding to the UE on M second channels in the second channel group is obtained, the second channel meeting preset requirements is determined according to the channel information of the SRS, and resources are allocated to the UE on the second channel meeting the preset requirements.

The processor 903 is further configured to perform the following operations:

and calculating the characteristic vector of the UE according to the SRS channel information before configuring resources to the UE on the second channel meeting the preset requirement.

The processor 903 is further configured to perform the following operations:

and decomposing the signal information of the SRS by using a Singular Value Decomposition (SVD) algorithm, and calculating the characteristic vector of the UE.

Optionally, a first UE is selected from the UEs according to a user priority principle, where the first UE is a UE with a first priority, and resources are configured to the first UE on the second channel meeting the preset requirement.

Optionally, a second UE and a third UE are selected from the UEs according to a user priority principle, where the second UE is a UE with a first priority, and the third UE is a UE with a second priority, an inner product of feature vectors of the second UE and the third UE is calculated, and when the inner product of the feature vectors of the second UE and the third UE is smaller than a preset threshold, resources are configured to the second UE and the third UE on the second channel meeting preset requirements.

Optionally, after configuring resources to the second UE and the third UE on the second channel meeting the preset requirement, zero forcing is performed on the feature vectors of the second UE and the third UE according to a zero forcing EZF increasing algorithm, and the feature vectors of the second UE and the third UE after zero forcing are mapped to the second channel meeting the preset requirement.

On the basis of the above embodiments, referring to fig. 10a to 10b and fig. 11a to 11b, an embodiment of an application scenario of a network architecture in an embodiment of the present invention includes:

please refer to fig. 10a-10b, which are a schematic structural diagram of a one-pull-two network architecture and a schematic diagram of an embodiment of corresponding network coverage, respectively, where a radio frequency channel RF in an RRU is externally connected to a remote antenna unit through a feeder, the number of the RF is 2, the number of the RRUs is 3, the number of the HUB is one, and one HUB can correspond to at least one RRU, where fig. 10a is a one-pull-two network architecture diagram corresponding to one RRU, and the antennas in the remote antenna unit are distributed, and there are 2 antennas, which are Ant0 and Ant1, respectively, and adjacent antennas are configured with different port ports, and in order to ensure the access of a current UE, the adjacent antennas are configured with a first port0 and a second port1 in a staggered manner, a cat5e is connected between the RRU and the HUB, and an optical fiber is connected between the BBU and the HUB.

When the reference signal receiving power of indoor coverage is guaranteed to be more than-105 dBm, according to simulation evaluation, the antenna spacing is required to be 10m under a network architecture in the prior art, the antenna transmitting power is 19dBm under a one-pull-two network architecture in the embodiment of the invention, and the antenna spacing is 15m and the RRU spacing is 30m when the network coverage is the same as that of the prior art, so that the number of RRUs can be effectively reduced compared with the prior art, and as the number of RRUs is reduced, the number of corresponding BBUs and HUBs is correspondingly reduced, the material cost is reduced, and meanwhile, the labor cost is greatly reduced.

In the first-pull-two network architecture in the embodiment of the present invention, when the BBU performs resource allocation on the UE, resource allocation can be performed using channels corresponding to the port0 and the port1, and at this time, dual streams can be supported, but only one port in the prior art can support a single stream, and a space division multiplexing gain of a single user can be obtained in the first-pull-two network architecture, and through simulation evaluation, a capacity gain of 30% to 60% can be obtained compared with that in the prior art.

Under the one-pull-two network architecture, the BBU may further perform resource configuration through channels corresponding to the RFs, as shown in fig. 10b, an embodiment of network coverage corresponding to 3 RRUs is illustrated, where one RRU includes 2 RFs, one RF corresponds to one channel, and 3 RRUs can support 6 channels, so that the spatial degree of freedom of the obtained antenna is 6, and at this time, a multi-user spatial multiplexing algorithm may be performed, and through simulation evaluation, a capacity gain of more than 300% may be obtained compared with the prior art.

Referring to fig. 11a-11b, which are respectively a schematic structural diagram of a one-pull-four network architecture and an exemplary diagram of a corresponding network coverage, a radio frequency channel RF in an RRU is externally connected to an antenna remote unit through a feeder, the number of the RF is 2, the number of the RRUs is 2, the number of the HUB is one, and one HUB can correspond to at least one RRU, where fig. 11a is a one-pull-four network architecture diagram corresponding to one RRU, and antennas in the antenna remote unit are distributed and disposed, and there are 4 antennas, which are Ant0, Ant1, Ant2, and Ant3, respectively, a power divider divides the antennas into two paths, and configures different port ports for the two paths of antennas, and in order to ensure the access of a current UE, the two paths of antennas are configured with a first port0 and a second port1 in a staggered manner, a cat5e is connected between the RRU and the HUB, and an optical fiber is connected between the BBU and the HUB.

The power divider enables the two antennas to share one power, the power of each antenna is halved, and the power of each antenna is reduced from 19dBm to 15dBm in consideration of line loss; in order to ensure the same coverage as the original coverage, the antenna spacing is 10m through simulation evaluation, and the spacing between the two RRUs is 40m at the moment, so that compared with the prior art, the number of the RRUs can be effectively reduced, the corresponding BBUs and HUBs are correspondingly reduced due to the reduction of the number of the RRUs, the material cost is reduced, and meanwhile, the labor cost is greatly reduced.

In the embodiment of the present invention, in the one-pull-four network architecture, when the BBU performs resource allocation on the UE, resource allocation can be performed using channels corresponding to the port0 and the port1, and at this time, dual streams can be supported, but only one port in the prior art can support a single stream, and in the one-pull-two network architecture, a space division multiplexing gain of a single user can be obtained, and through simulation evaluation, a capacity gain of 30% to 60% can be obtained compared with that in the prior art.

Under a one-pull-four network architecture, the BBU may further perform resource configuration through channels corresponding to the RFs, as shown in fig. 11b, an embodiment of network coverage corresponding to 2 RRUs is illustrated, where one RRU includes 2 RFs, one RF corresponds to one channel, and 2 RRUs can support 4 channels, so that the spatial degree of freedom of the obtained antenna is 4, at this time, a multi-user spatial multiplexing algorithm may be performed, and through simulation evaluation, a capacity gain of more than 200% may be obtained compared with the DAS.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A communications apparatus, comprising: the remote radio unit comprises an antenna remote unit and a radio remote unit RRU;

the RRU is configured with N ports, the RRU comprises M radio frequency channels, the N ports comprise at least two different types of ports, and each port in the N ports is a logic port;

the antenna remote unit is connected with the M radio frequency channels through the N ports, and one port of the N ports corresponds to at least one radio frequency channel of the M radio frequency channels;

wherein N and M are positive integers, and N is less than or equal to M.

2. The apparatus of claim 1, wherein the different types of ports are configured differently.

3. The apparatus of claim 1 or 2, wherein the different types of ports support signals of different frequencies.

4. The apparatus of any of claims 1 to 3, wherein the N ports comprise two different types of ports, the two different types of ports being staggered.

5. The apparatus of any of claims 1 to 4, wherein the N ports correspond to N antennas.

6. The apparatus of any of claims 1 to 4, wherein the N ports correspond to N antenna groups, and wherein an antenna group of the N antenna groups comprises at least two antennas, and wherein the at least two antennas are antennas in a staggered configuration.

7. The apparatus of claim 6, further comprising a power divider,

one end of the power divider is connected with the antenna groups in the N antenna groups, and the other end of the power divider is connected with the radio frequency channels in the M radio frequency channels through the ports corresponding to the antenna groups in the N antenna groups, and the radio frequency channels in the M radio frequency channels correspond to the ports corresponding to the antenna groups in the N antenna groups.

8. The apparatus of any of claims 1-7, wherein the apparatus comprises a first channel group for receiving a reference signal, the first channel group comprising N first channels.

9. The apparatus of claim 8, wherein a first channel of the N first channels that meets a preset requirement is a channel for configuring resources to a user terminal, and wherein the first channel meets the preset requirement when a power of a reference signal received by the first channel is greater than a threshold.

10. The apparatus of any of claims 1-7, wherein the apparatus comprises a second channel group for receiving a reference signal, the second channel group comprising M second channels.

11. The apparatus of claim 10, wherein a second channel of the M second channels that meets a preset requirement is a channel for configuring resources to the ue, and wherein the second channel that meets the preset requirement is determined according to corresponding reference signal information on the M second channels.

12. The apparatus of any of claims 1-11, further comprising: a baseband processing unit BBU and a HUB HUB;

and the HUB is respectively connected with the BBU and the RRU.