CN114710790A - Sharing deployment method of wireless network to adjacent buildings - Google Patents
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Abstract
The invention discloses a sharing deployment method of a wireless network to adjacent buildings, which comprises the following steps: selecting an adjacent building area suitable for deploying the shared micro base station; a building busy and idle period and region monitoring method; deploying a planning scheme; under the framework of the base station deployment and the network planning, corresponding adaptation and optimization modes are adopted for internal implementation of the shared micro base station. The invention can improve the utilization efficiency of wireless network resources, reduce the deployment cost and the maintenance cost of the wireless base station and the network, and simultaneously improve the user experience in a high load area and a high time period.
Description
Technical Field
The invention relates to the technical field of wireless networks, in particular to a sharing deployment method of a wireless network to adjacent buildings.
Background
The 5G NR wireless network technology generally applies a large-scale antenna array due to the introduction of a high-frequency band spectrum, so that the design of the whole system is centered on a beam, which is a significant change relative to a previous generation system (LTE); meanwhile, in order to improve the performance of the network by at least 10 times in terms of coverage and capacity, a micro base station is introduced on a large scale and is combined with a macro base station for networking, and the micro base station has the characteristics of small coverage range (tens to hundreds of meters) and high deployment density, which is also a great change relative to the prior generation system.
Under the above background, considering the purposes of network construction cost, energy consumption efficiency, user experience, and the like, according to diversified environmental scenes and user demand characteristics, a new technical scheme aiming at specific demands and problems that many previous generation systems have not been considered or cannot be realized necessarily appears in the design of network deployment.
Buildings with different functional purposes exist in the same building group and are adjacently and adjacently distributed in a close distance, and the phenomenon exists in a large amount in the current urban environment. Such as homes and office buildings, are located in adjacent buildings at distances on the order of tens to hundreds of meters. The distribution density of the user population of wireless networks in such neighboring buildings presents a significant time-reversed tidal phenomenon. For example, during daytime work hours, the work hours are concentrated in office buildings, which become hot spots for users to distribute, and more than 80% of the users may leave the adjacent residential buildings. The situation is just opposite when the rest time after work at night comes. Such adjacent buildings appear in a time-reversed tidal distribution due to different functions, and are abundant in a real scene. From the building category, many other kinds of building situations exist, such as neighboring houses and shopping malls, neighboring houses and schools, neighboring houses and meeting places, neighboring office buildings and surrounding food and beverage service places, and the like. From the time distribution, there are other cases such as the period of the day of the working day and the period of the whole day of the holiday, the period of the event of.
In the above scenario, there may be inefficient utilization of network resources by the base stations or micro base stations of adjacent buildings deployed for different functional purposes. I.e. when the base stations in one building are operating at high load, the base stations in the adjacent buildings are in a state where the resources are idle to a large extent, and vice versa. The inefficient utilization of the network resources has the possibility of obtaining optimization and promotion in a larger range through a new deployment design scheme from the aspects of deployment cost, maintenance cost, energy consumption efficiency, user experience and the like.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a method for sharing and deploying adjacent buildings by a wireless network.
The invention provides a sharing deployment method of a wireless network to adjacent buildings, which comprises the following steps:
s1 selecting a neighboring building area suitable for deploying the shared micro base station, and determining whether several necessary conditions are satisfied:
1. the selected adjacent buildings have different functional types, and the wireless network user groups in the buildings have opposite tide distribution phenomena in time, namely when the building on one side is in a hot spot time period, the building on the other side is just in an idle time period, for example, the building in a residential building is in a time period with higher idle degree from 8 am to 6 pm, and is in a hot spot time period from 6 pm to 8 pm, and the state time periods of the adjacent office buildings are opposite;
2. when the beam of the shared micro base station is directionally covered on the building on one side, the signal quality in the covered building can meet the key performance indexes of the throughput rate and the coverage distance of the system;
s2 method for monitoring busy and idle time period and area of building:
the method comprises the steps that a comprehensive detection mode is adopted, such as service volume statistics of a network to areas in different directions, a network management module is connected with a monitoring system of a building to acquire busy and idle state information of the areas in different directions, which is acquired by a video monitoring mode, the detection information is synthesized to acquire the busy and idle state degrees of the areas in different directions in real time, and the busy and idle state information can be acquired by areas to the buildings on the same side, and the information can be used for projecting beams and releasing network resources to the buildings in different directions later, and can further adopt differentiated releasing strategies to different areas in the same building, because people gathering and scattering time of different areas in the same building are not completely synchronous;
s3 deploying a planning scheme;
s31, pre-formulating a coverage area plan of the shared micro base station to adjacent buildings, and determining the coverage area of each micro base station when the main directions of beam projection and network resource release of the micro base stations are switched among different buildings, wherein the principle is to ensure the signal receiving quality and the KPI (key performance indicator) of the network;
s32 uneven distribution density of shared micro base stations, because the indoor layout of buildings is not even, even if the indoor crowd density of the same building on different azimuth angles is not even, the density of the distributed shared micro base stations is not necessarily uniform, but is coordinated with the indoor layout of the buildings and the crowd density, so as to ensure the signal receiving quality;
s33, the beam projection mode of the asymmetric angle range, for the buildings on both sides with complementary tidal time segments, because the indoor layout and crowd density in the buildings are not symmetric, for each shared micro base station, before and after the main projection direction of the beam is switched between the buildings on both sides, the asymmetric mode is adopted for the angle range of the beam mainly projected by the building on each side, and the coordination with the indoor layout and crowd density on each side ensures the signal receiving quality;
the shared micro base station 1 covers a larger angle range of the A1 area than the B1 area, and the shared micro base station 2 covers a smaller angle range of the A2 area than the B2 area;
s34 beam projection manner in non-uniform direction, people in indoor areas of two side buildings are not completely consistent in tidal time period, and it is assumed that there are two areas a1 and a2 in building a on one side, when a1 starts to be idle, people in a2 do not leave, and are still in hot spot state, and when B1 and B2 in building B on the other side, B1 is in hot spot state, and B2 is still in idle state, micro base station 1 is planned to be responsible for coverage of areas a1 and B1, and micro base station 2 is planned to be responsible for coverage of areas a2 and B2, then in the above situation, after the main projection direction of the beam of micro base station 1 is switched from a1 to B1, the main projection direction of the beam of micro base station 2 is still maintained at a2, that is, switching of the main projection direction of the beam is handled independently for each shared micro base station, rather than uniformly switching the whole shared micro base station group;
s4, under the framework of base station deployment and network planning, implementing the inside of the shared micro base station by adopting a corresponding adaptation and optimization mode;
s41, the network management module sends down the directional mode signaling;
after the building busy and idle period and the area distribution information obtained in the step S2 are obtained, the network management module issues the information to a link control, i.e., a scheduling module, in the radio access network protocol stack by multiplexing the existing signaling interface under the existing protocol framework or another newly designed signaling interface;
the beam selection function of the S42 scheduling module;
the scheduling function is triggered after receiving the directional mode signaling sent by the network management module, because under the designed network planning scheme, each shared micro base station has planned coverage schemes, i.e. the directions and angular ranges of beams, according to the indoor layout and busy/idle state of the building, and there are some predefined schemes, the special scheduling function module designed here can optimize the implementation efficiency of the scheduling function related to the beam directions in the mode, for example, the scheduling module can allocate a fixed beam index value to each direction and angular range for the beams in several directions and angular ranges which the micro base station is mainly responsible for covering, and the beam index value can be sent to the baseband through an interface, an index value is used for marking a wave beam in a fixed direction, so that after the shared micro base station obtains a hot spot area which is mainly currently responsible for covering through a network management module, the process of allocating the wave beam index to the user in the area by a scheduling module can be simplified, and furthermore, the process of calculating the wave beam weight by a baseband can be simplified;
a beam weight calculation and application module of S43 baseband;
the process that the baseband calculates the beam weight in real time according to the channel measurement information of the user is the calculation work of the core of the beam forming function, the calculation amount and the time consumption are huge, and the critical pressure is formed on the system load.
In the invention, the method for sharing and deploying the adjacent buildings by the wireless network can reduce the total deployment quantity of the micro base stations by sharing the micro base stations at different time intervals among the buildings, greatly improve the utilization efficiency of the micro base stations and corresponding network resources, greatly reduce the deployment cost and maintenance cost of the micro base stations, improve the energy consumption efficiency, and simultaneously guarantee and improve the user experience (for example, if the quantity of the micro base stations used by the building on one side is 1, both sides are 2, and if the deployment quantity of the shared micro base stations is 1.5, the total quantity is reduced, but in a hot spot time interval with staggered tides, for the buildings in a hot spot state, the micro base stations of 1.5 are mainly put in the hot spot area, and the coverage performance of the system can be improved to a certain extent compared with the original 1).
Under the design scheme that the shared micro base station divides the coverage area in advance, the functional process of the scheduling in the base station and the base band for realizing beam forming can be simplified, the calculation performance of the base station is improved, and the maintenance difficulty is reduced.
The invention provides a design scheme for deploying shared micro base stations among buildings with different functions by utilizing the controlled beam-oriented coverage capability of the micro base stations or base stations carrying large-scale antenna arrays aiming at the close-range adjacent mixed distribution areas of the buildings with different functions and purposes, and simultaneously, under the deployment scheme, important supporting technical design is correspondingly considered from different protocol levels of a network.
The invention can improve the utilization efficiency of wireless network resources, reduce the deployment cost and the maintenance cost of the wireless base station and the network, and simultaneously improve the user experience in a high load area and a high time period.
Drawings
Fig. 1 is a schematic diagram of an adjacent building deployment shared micro base station of a shared deployment method of a wireless network to an adjacent building according to the present invention;
fig. 2 is a schematic diagram of deployment modes of micro base stations with different densities for a method for shared deployment of a wireless network to adjacent buildings according to the present invention.
Detailed Description
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.
Referring to fig. 1-2, a method for shared deployment of a wireless network to adjacent buildings includes the following steps:
s1 selecting a neighboring building area suitable for deploying the shared micro base station, and determining whether several necessary conditions are satisfied:
1. the selected adjacent buildings have different functional types, and the wireless network user groups in the buildings have opposite tide distribution phenomena in time, namely when the building on one side is in a hot spot time period, the building on the other side is just in an idle time period, for example, the building in a residential building is in a time period with higher idle degree from 8 am to 6 pm, and is in a hot spot time period from 6 pm to 8 pm, and the state time periods of the adjacent office buildings are opposite;
2. when the beam of the shared micro base station is directionally covered on the building on one side, the signal quality in the covered building can meet the key performance indexes of the throughput rate and the coverage distance of the system;
s2 method for monitoring busy and idle time period and area of building:
the method comprises the steps that a comprehensive detection mode is adopted, such as service volume statistics of a network to areas in different directions, a network management module is connected with a monitoring system of a building to acquire busy and idle state information of the areas in different directions, which is acquired by a video monitoring mode, the detection information is synthesized to acquire the busy and idle state degrees of the areas in different directions in real time, and the busy and idle state information can be acquired by areas to the buildings on the same side, and the information can be used for projecting beams and releasing network resources to the buildings in different directions later, and can further adopt differentiated releasing strategies to different areas in the same building, because people gathering and scattering time of different areas in the same building are not completely synchronous;
s3 deploying a planning scheme;
s31, pre-formulating a coverage area plan of the shared micro base station to adjacent buildings, and determining the coverage area of each micro base station when the main directions of beam projection and network resource release of the micro base stations are switched among different buildings, wherein the principle is to ensure the signal receiving quality and the KPI (key performance indicator) of the network;
s32 uneven distribution density of shared micro base stations, because the indoor layout of buildings is not even, even if the indoor crowd density of the same building on different azimuths is not even, the density of the distributed shared micro base stations is not necessarily uniform, but is coordinated with the indoor layout of buildings and the crowd density, so as to ensure the signal receiving quality;
s33, the beam projection mode of the asymmetric angle range, for the buildings on both sides with complementary tidal time segments, because the indoor layout and crowd density in the buildings are not symmetric, for each shared micro base station, before and after the main projection direction of the beam is switched between the buildings on both sides, the asymmetric mode is adopted for the angle range of the beam mainly projected by the building on each side, and the coordination with the indoor layout and crowd density on each side ensures the signal receiving quality;
the shared micro base station 1 covers a larger angle range of the A1 area than the B1 area, and the shared micro base station 2 covers a smaller angle range of the A2 area than the B2 area;
s34 is a non-uniform beam projection manner, wherein the tidal time periods of people in each indoor area of the buildings on both sides are not completely consistent, and it is assumed that there are two areas a1 and a2 in the building a on one side, when a1 starts to be idle, the people in a2 do not leave yet and are still in a hot spot state, and the people in B1 and B2 in the building B on the other side, B1 is in a hot spot state and B2 is still in an idle state, the micro base station 1 is planned to be responsible for the coverage of the areas a1 and B1, and the micro base station 2 is planned to be responsible for the coverage of a2 and B2, in the above situation, after the main beam projection direction of the micro base station 1 is switched from a1 to B1, the main beam projection direction of the micro base station 2 is still maintained at a2, that is to independently handle the switching of the main beam projection direction of each shared micro base station, rather than uniformly switching the entire shared micro base station group;
s4, under the framework of base station deployment and network planning, implementing the inside of the shared micro base station by adopting a corresponding adaptation and optimization mode;
s41, the network management module sends down the directional mode signaling;
after the building busy and idle period and the area distribution information obtained in the step S2 are obtained, the network management module issues the information to a link control, i.e., a scheduling module, in the radio access network protocol stack by multiplexing the existing signaling interface under the existing protocol framework or another newly designed signaling interface;
the beam selection function of the S42 scheduling module;
the scheduling function is triggered after receiving the directional mode signaling sent by the network management module, because under the designed network planning scheme, each shared micro base station has planned coverage schemes, i.e. the directions and angular ranges of beams, according to the indoor layout and busy/idle state of the building, and there are some predefined schemes, the special scheduling function module designed here can optimize the implementation efficiency of the scheduling function related to the beam directions in the mode, for example, the scheduling module can allocate a fixed beam index value to each direction and angular range for the beams in several directions and angular ranges which the micro base station is mainly responsible for covering, and the beam index value can be sent to the baseband through an interface, an index value is used for marking a wave beam in a fixed direction, so that after the shared micro base station obtains a hot spot area which is mainly responsible for covering currently through the network management module, the process of allocating the wave beam index to the user in the area by the scheduling module can be simplified, and further, the process of calculating the wave beam weight by the baseband can be simplified;
a beam weight calculation and application module of S43 baseband;
the process that the baseband calculates the beam weight in real time according to the channel measurement information of the user is the calculation work of the core of the beam forming function, the calculation amount and the time consumption are huge, and the critical pressure is formed on the system load.
The scheme of the invention is provided under the scene of facing new problems (including large-scale introduction of micro base station and base station combined networking, high-density distribution of micro base stations) and under the support of new technical characteristics (beam is taken as a center in system design and the like) of the new generation wireless network, because the prior generation wireless network does not have the support of the new technical characteristics of the system, most of the prior technical schemes do not consider the design scene and problems of the scheme, and do not have the technical support capability of solving the problem in a similar mode using the scheme of the invention, the scheme belongs to a new method aiming at the new problem, the overlapping degree with the prior art is very low, the prior technical schemes with higher relevance are listed below, and the technical difference points with the scheme of the invention are explained:
1. CN201410495984.5, a method and apparatus for adjusting the coverage of pico base station;
the patent mainly aims at optimizing a CRE (cell coverage area expansion) technology under a macro-micro base station combined networking scene, namely, the coverage area of a pico cell is automatically adjusted by acquiring and judging load state information of the pico cell and adjusting an offset value of the pico cell (related to the transmitting power of a macro base station).
The problems considered by patent scheme (a) and patent technology (B) of this document relate to load balancing, and the solutions relate to network coverage adjustment, but have essential differences, the main difference being that,
1.1, the problems to be solved are different, wherein A is the problem that the network load of a hot spot area is higher and the idle degree of an idle area network is higher in the same time period caused by the tide distribution of the user density which is opposite in time in different types of adjacent buildings, and can be regarded as the balance of the service load of different position areas in the same cell (the coverage area of the same base station). B is to solve the load balancing and interference coordination between different cells (respective coverage areas of macro and micro base stations).
The method A mainly utilizes the directional characteristic of the wave beam, after the position and the state information of the hot spot and the idle area covered by the same base station are obtained, the wave beam is used as the center to design the allocation of the base station and the network resource, and the utilization efficiency of the network resource and the user experience are improved. The method B adjusts the size of the coverage area of the pico-base station mainly by adjusting the transmission power offset value, and has no processing capability for the area directivity, and further, does not actually have the effect of reducing the deployment density of the pico-base station.
2. CN201511017975.6, a pico base station dormancy method is optimized based on the combination of energy efficiency and traffic load;
the patent aims at macro-micro base station joint networking, and designs a scheme for sleeping the micro-micro base station based on energy efficiency and traffic load information.
The main difference with the patent solution herein is that the way to sleep pico base stations does not reduce the deployment density, deployment cost and maintenance cost of the micro base stations. In terms of methods, scheduling of network resources based on directionality is not employed.
3. CN201110275983.6, a method and a device for determining the deployment position of a micro base station;
the patent provides a method and a device for determining the deployment position of a micro base station, which are used for counting the telephone traffic geographic distribution of a geographic area to be analyzed based on a positioning algorithm so as to achieve the purpose of quickly and accurately finding the position which is most suitable for deploying the micro base station.
The main difference with the patent scheme is that the statistics of traffic distribution do not consider the tide phenomenon at the same position in different time periods, and even do not consider the phenomenon that the tide distribution density in the same time period in adjacent areas is opposite. In addition, the problem solving method is to fix the deployment position and the coverage range, and the effect of reducing the deployment density of the micro base station cannot be achieved.
The invention provides a deployment design scheme for sharing a micro base station among buildings, and provides a sharing deployment scheme for macro-micro base station combined networking, aiming at scenes of close-range adjacent distribution of buildings of different functional types and scenes of time-reversed tide distribution of wireless network user groups in the buildings.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A shared deployment method of a wireless network to adjacent buildings is characterized by comprising the following steps:
s1 selecting a neighboring building area suitable for deploying the shared micro base station, and determining whether several necessary conditions are satisfied:
(1) the selected adjacent buildings have different functional types, and the wireless network user groups in the buildings have opposite tide distribution phenomena in time, namely when the building on one side is in a hot spot period, the building on the other side is just in an idle period, for example, the building in a residential building is in a period with higher idle degree from 8 am to 6 pm, and is in a hot spot period from 6 pm to 8 pm, and the state periods of the adjacent office buildings are opposite;
(2) the adjacent buildings are within the directional coverage range of the shared micro base station, namely, the deployment position of the shared micro base station, the distance between the adjacent buildings and the penetration characteristics of the buildings are comprehensively considered, so that when the beam of the shared micro base station is directionally covered to the building on one side, the signal quality in the covered building can meet the key performance indexes of the throughput rate and the coverage distance of the system;
s2 method for monitoring busy and idle time period and area of building:
the method comprises the steps that a comprehensive detection mode is adopted, such as the statistics of the traffic of a network to areas in different directions is included, a network management module is connected with a monitoring system of a building to obtain busy and idle state information of the areas in different directions obtained in a video monitoring mode, the detection information is synthesized to obtain the busy and idle state degrees of the areas in different directions in real time, and the busy and idle state information can be obtained for the buildings on the same side in different regions;
s3 deploying a planning scheme;
s31, pre-formulating a coverage area plan of the shared micro base station to adjacent buildings, and determining the coverage area of each micro base station when the main directions of beam projection and network resource release of the micro base stations are switched among different buildings, wherein the principle is to ensure the signal receiving quality and the KPI (key performance indicator) of the network;
s32 uneven distribution density of shared micro base stations, because the indoor layout of buildings is not even, even if the indoor crowd density of the same building on different azimuth angles is not even, the density of the distributed shared micro base stations is not necessarily uniform, but is coordinated with the indoor layout of the buildings and the crowd density, so as to ensure the signal receiving quality;
s33, the beam projection mode of the asymmetric angle range, for the buildings on both sides with complementary tidal time segments, because the indoor layout and crowd density in the buildings are not symmetric, for each shared micro base station, before and after the main projection direction of the beam is switched between the buildings on both sides, the asymmetric mode is adopted for the angle range of the beam mainly projected by the building on each side, and the coordination with the indoor layout and crowd density on each side ensures the signal receiving quality;
the shared micro base station 1 covers a larger angle range of the A1 area than the B1 area, and the shared micro base station 2 covers a smaller angle range of the A2 area than the B2 area;
s34 beam projection manner in non-uniform direction, people in indoor areas of two side buildings are not completely consistent in tidal time period, and it is assumed that there are two areas a1 and a2 in building a on one side, when a1 starts to be idle, people in a2 do not leave, and are still in hot spot state, and when B1 and B2 in building B on the other side, B1 is in hot spot state, and B2 is still in idle state, micro base station 1 is planned to be responsible for coverage of areas a1 and B1, and micro base station 2 is planned to be responsible for coverage of areas a2 and B2, then in the above situation, after the main projection direction of the beam of micro base station 1 is switched from a1 to B1, the main projection direction of the beam of micro base station 2 is still maintained at a2, that is, switching of the main projection direction of the beam is handled independently for each shared micro base station, rather than uniformly switching the whole shared micro base station group;
s4, under the framework of base station deployment and network planning, implementing the inside of the shared micro base station by adopting a corresponding adaptation and optimization mode;
s41, the network management module sends down the directional mode signaling;
after the building busy and idle period and the area distribution information obtained in the step S2 are obtained, the network management module issues the information to a link control, i.e., a scheduling module, in the radio access network protocol stack by multiplexing the existing signaling interface under the existing protocol framework or another newly designed signaling interface;
the beam selection function of the S42 scheduling module;
the scheduling function is triggered after receiving the directional mode signaling sent by the network management module, because under the designed network planning scheme, each shared micro base station has planned coverage schemes, i.e. the directions and angular ranges of beams, according to the indoor layout and busy/idle state of the building, and there are some predefined schemes, the special scheduling function module designed here can optimize the implementation efficiency of the scheduling function related to the beam directions in the mode, for example, the scheduling module can allocate a fixed beam index value to each direction and angular range for the beams in several directions and angular ranges which the micro base station is mainly responsible for covering, and the beam index value can be sent to the baseband through an interface, an index value is used for marking a wave beam in a fixed direction, so that after the shared micro base station obtains a hot spot area which is mainly responsible for covering currently through the network management module, the process of allocating the wave beam index to the user in the area by the scheduling module can be simplified, and further, the process of calculating the wave beam weight by the baseband can be simplified;
a beam weight calculation and application module of S43 baseband;
the process that the baseband calculates the beam weight in real time according to the channel measurement information of the user is the calculation work of the core of the beam forming function, the calculation amount and the time consumption are huge, and the critical pressure is formed on the system load.
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