CN113225707B - System and method for accessing lane tide phenomenon by wireless network - Google Patents
System and method for accessing lane tide phenomenon by wireless network Download PDFInfo
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- CN113225707B CN113225707B CN202110516463.3A CN202110516463A CN113225707B CN 113225707 B CN113225707 B CN 113225707B CN 202110516463 A CN202110516463 A CN 202110516463A CN 113225707 B CN113225707 B CN 113225707B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a system and a method for accessing a wireless network to lane tide phenomena, which can adaptively adjust resource allocation; it includes network management module and the wireless base station who is connected with network management module, and network management module includes: a planning scheme module stored in the network management module for forming a selection set of the pre-designed SSB beam configuration scheme; the SSB beam configuration scheme is at least any one of: increasing SSB wave beam coverage on a busy side lane of a road, reducing SSB wave beam coverage on an idle side lane of the road and adjusting switching parameters; the solution self-adaptive adjusting module is connected with the planning scheme module and the wireless base station and is used for determining a final SSB wave beam configuration scheme corresponding to the called wireless base station after acquiring dynamic information on a lane; and the solution starting module is connected with the solution self-adaptive adjusting module and the wireless base station and is used for starting the SSB wave beam configuration scheme in real time after receiving the dynamic information on the lane.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a system and a method for accessing a wireless network to lane tide phenomenon.
Background
The tide phenomenon of the lane is widely existed in the commuting time of going to and going to work in large and medium-sized cities, and is also widely existed on the traffic trunk roads between cities when holidays come or bottleneck road sections combined in suburbs. When the lane tide phenomenon occurs, a large number of slowly running small-sized cars are blocked on a lane in one direction, and basically no or only few cars pass in the other direction, so that even if the tide lane is temporarily arranged to relieve traffic conditions, the number of the cars passing in the two directions still has the two-polarization distribution. In the field of wireless networks, when a high density and a large number of aggregation of high-activity users occur in a period of time, due to the limited access resources, the success rate of access may be reduced, and the latency of access may be prolonged, for example: when congestion caused by tide phenomenon occurs, considering that the distance between the front and the back of each vehicle is about 1 meter in total, namely 5 vehicles crawl slowly on a 6-meter long lane, if the coverage diameter of a 5g wireless base station or micro base station is 120 meters to 240 meters, the coverage range is about 100 to 200 vehicles; assuming that there are roughly 2 passengers (some of which are buses) in each vehicle, there are roughly 200 to 400 users in a dense group, and considering the future application of the train combination, each vehicle may need to access the network independently, which will result in a shortage of access resources, and at the same time, some access resources may be wasted due to the free side of the tidal lane.
In the random access link of a user, available access resources of a wireless network are also limited, for example, in a 5G NR, SSBs (synchronization signal blocks) are transmitted by using beams in different directions at different times, and scanning of the coverage area of a whole cell is completed by transmitting an SSB burst set, where each SSB corresponds to one access resource (including preamble time-frequency resource allocation, a beam direction and an optional preamble set) that may be used by the user. When users are unevenly distributed and aggregated in a cell, if the beams in which SSB bursts are concentrated adopt uniform angle intervals and scanning time intervals, access success rate may be decreased and access delay may be increased in an area where users are aggregated at a high density due to shortage of access resources. And for the idle area with rare users, the release of some access resources may be wasted. For example, a typical configuration designed by 5g at present is that each Rach occupancy can use 16 SSBs at most, the SSBs averagely allocate 64 preambles (preambles) at most, that is, each SSB can have 4 preambles for selection at most, allowing multiple users to perform access contention on the same time-frequency resource, the base station selects a user with better demodulation quality to perform contention resolution according to the received signal strength and demodulation result of each user, and a user with a failed contention can only reinitiate an access request subsequently. The transmission direction of the beam corresponding to each SSB is usually used in such a way that the beam direction corresponding to each SSB is different, and the scanning of the whole cell is completed at uniform angular intervals. Then, when a high-density aggregated area appears in a high-activity user, user collision during access is aggravated, and the access success rate is reduced. The 5g standard does not currently specify the number of SSB beam scans, frequency and angular range, and other specific applications. Therefore, in a specific scenario such as lane tide, an optimized design of the access scheme including the application of beamforming technology is necessary.
However, in the prior art, there is a method of covering an expressway with an intelligent antenna, but the method aims at the problem of call drop caused by the short switching belt in high-speed movement, but not the problem of access of lane tides, and the cost is high.
Disclosure of Invention
In view of the above problems, the present invention provides a system and a method for accessing a lane tide phenomenon by a wireless network, which can adaptively adjust resource allocation when the lane tide phenomenon occurs.
The technical scheme is as follows: an access system of a wireless network to lane tide phenomenon is characterized in that: the wireless base station is arranged on a road to detect tide state information on a lane of the road, wherein the tide state comprises a tide generating state, a tide climax state and a tide fading state; the network management module comprises:
a planning scheme module, stored in the network management module, for forming a selection set of a pre-designed SSB beam configuration scheme;
the SSB beam configuration scheme is at least any one of: increasing SSB beam coverage on a busy side lane of the road, reducing SSB beam coverage on an idle side lane of the road, and adjusting a switching parameter;
the solution adaptive adjustment module is connected with the planning scheme module and the wireless base station and is used for determining the final SSB wave beam configuration scheme corresponding to the called wireless base station after acquiring the dynamic information on the lane;
and the solution starting module is connected with the solution self-adaptive adjusting module and the wireless base station and is used for starting the SSB wave beam configuration scheme in real time after receiving the dynamic information on the lane.
Furthermore, the system also comprises a tide phenomenon sensing module which is connected with the solution starting module and the traffic control monitoring system and is used for transmitting tide information to the solution starting module after the tide information is acquired;
further, the wireless base station is arranged in the center of a road, and under a set scanning time frequency, tide state data positioned on two sides of the road are collected so as to determine a busy side lane and a free side lane;
further, the solution adaptive adjustment module comprises a judgment unit and a control unit which are connected, wherein the judgment unit is used for judging whether a preset condition is met or not through the acquired tidal state data, and the preset condition comprises fluctuation state data of tidal phenomena on a lane; the control unit is used for calling and configuring the SSB wave beam corresponding to the wireless base station according to the SSB wave beam configuration scheme when the judging unit determines that the preset condition is met;
further, adjusting the handover parameters in the SSB beam configuration scheme includes: according to fluctuation state data of tide phenomena on the lanes, the SSB wave beam quantity ratio of the lanes on two sides is changed in a self-adaptive progressive mode in different tide states;
a method for accessing a wireless network to a lane tide phenomenon is characterized by comprising the following steps: which comprises the following steps:
s1, when the tide phenomenon does not occur, the wireless base station distributes the same number of SSB wave beams for lanes on the two sides of the road;
s2, when the tide is between a tide generating state and a tide high tide state, after the wireless base station detects tide state information on lanes of a road, determining a busy side lane and a free side lane, and starting an SSB wave beam configuration scheme in real time through the solution starting module, namely, the wireless base station gradually increases SSB wave beams for the busy side lane and decreases SSB wave beams for the free side lane within the scanning angle range of the lanes on the two sides; when the tide is in a high tide state and a tide fading state, the SSB wave beams added by the busy side lane are gradually reduced, and the SSB wave beams of the idle side lane are increased until the SSB wave beams of the two side lanes are in the same ratio quantity when the tide is in the fading state.
The method has the advantages that the resource allocation of the scanning beams can be adjusted in a self-adaptive mode aiming at the lane tide phenomenon, access resources and performance of a traffic jam side are guaranteed, meanwhile, the access resources are prevented from being thrown in an idle side lane in an invalid or low-efficiency mode, and the method has good self-adaptability.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a schematic diagram of the SSB beam matching state of the present invention.
Detailed Description
As shown in fig. 1, the access system of the wireless network to the lane tide phenomenon of the present invention comprises a network management module and a wireless base station connected with the network management module, wherein the wireless base station is arranged on a road to detect the tide status information on the lane of the road, and the tide status comprises a tide occurrence status, a tide climax status and a tide fading status; the network management module comprises:
a planning scheme module, which is a solution that can be referred to in advance in a deployment stage, and is stored in the network management module and used for forming a selection set of a pre-designed SSB beam configuration scheme;
the SSB beam configuration scheme is at least any one of: increasing SSB beam coverage on a busy side lane of the road, reducing SSB beam coverage on an idle side lane of the road, and adjusting switching parameters; adjusting handover parameters in the SSB beam configuration scheme includes: according to fluctuation state data of tide phenomena on the lanes, the SSB wave beam quantity proportion of the lanes on two sides is changed in a self-adaptive and gradual mode in different tide states;
the solution adaptive adjustment module is connected with the planning scheme module and the wireless base station and is used for determining the final SSB wave beam configuration scheme corresponding to the called wireless base station after acquiring the dynamic information on the lane;
and the solution starting module is connected with the solution self-adaptive adjusting module and the wireless base station and is used for starting the SSB wave beam configuration scheme in real time after receiving the dynamic information on the lane.
The tidal phenomenon sensing module is connected with the solution starting module and a traffic pipe monitoring system (an existing system) and is used for transmitting tidal information to the solution starting module after the tidal information is acquired; the invention can not only obtain the tide information through the wireless base station, but also directly obtain the tide through the traffic control monitoring system
The wireless base station is arranged in a road central isolation zone, can also be positioned at one side of a road, can be arranged according to actual conditions, and collects tide state data positioned at two sides of the road under a set scanning time frequency so as to determine a busy side lane and an idle side lane and judge the direction of the blocking side of tide.
The self-adaptive adjustment module of the solution comprises a judgment unit and a control unit which are connected, wherein the judgment unit is used for judging whether a preset condition is met or not through the acquired tidal state data, and the preset condition comprises fluctuation state data of a tidal phenomenon on a lane; and the control unit is used for calling and configuring the SSB wave beam corresponding to the wireless base station according to the SSB wave beam configuration scheme when the judging unit determines that the preset condition is met.
A wireless network access method to lane tide phenomenon comprises the following steps:
s1, when the tide phenomenon does not occur, the wireless base station distributes the same number of SSB wave beams for lanes on the two sides of the road;
s2, when the tide is between the tide generating state and the tide climax state, the wireless base station detects the tide state information on the lane of the road, then the busy side lane and the free side lane are determined, and the SSB wave beam configuration scheme is started in real time through the solution starting module, namely the wireless base station gradually increases SSB wave beams for the busy side lane and decreases SSB wave beams for the free side lane in the scanning angle range of the two side lanes; when the vehicle is in a tide high tide state and a tide fading state, the SSB wave beams added by the busy side lane are gradually reduced, and the SSB wave beams of the idle side lane are increased until the SSB wave beams of the two side lanes are in the same proportion quantity until the vehicle is in the tide fading state.
For clarity, for example, as shown in fig. 2, it is assumed that the number of SSB beams available for the wireless base station configuration is 16, each SSB is carried by one beam, and within a SSB burst set time (e.g., 5ms), the left lane is set as a busy side lane, the right lane is set as a free side lane, within a scanning angle range of the left lane, the wireless base station invests 12 SSB beams, and within a scanning angle range of the right lane, invests the remaining 4 SSB beams; then, in one burst set time, a total of 16 SSB beams are scanned, the beam density on the left side is higher, and the angular range for which each beam is responsible is smaller, so that the signal quality in each angular range is better, while more resources are available for access.
And when the tidal climax state is changed into the tidal fade state along with the change of the tidal state, the proportion of the number of the SSB beams on the left side and the right side is gradually changed, such as 10 to 6, 12 to 4, 14 to 2 and the like.
According to the invention, additional equipment does not need to be additionally arranged, the equipment cost is not increased, the state of congestion aggregation of users on one side of the lane can be obtained through the self statistical measurement of the wireless base station, the state information of lane tide phenomenon can be obtained by the network management module through the connection with a different system such as a traffic management monitoring system, the state information can be obtained more accurately and reliably, the access resources are efficiently utilized through scanning the number of the beams in different scanning angle ranges of the beams, the resource configuration can be self-adaptively adjusted according to the lane congestion state, and the self-adaptive characteristic is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A wireless network access system to lane tide phenomenon is characterized in that: the wireless base station is arranged on a road to detect tide state information on a lane of the road, wherein the tide state comprises a tide generating state, a tide climax state and a tide fading state; the network management module comprises:
a planning scheme module, stored in the network management module, for forming a selection set of a pre-designed SSB beam configuration scheme;
the SSB beam configuration scheme is at least any one of: increasing SSB beam coverage on a busy side lane of the road, reducing SSB beam coverage on an idle side lane of the road, and adjusting switching parameters;
the solution self-adaptive adjusting module is connected with the planning scheme module and the wireless base station and is used for determining the final SSB wave beam configuration scheme corresponding to the called wireless base station after acquiring dynamic information on a lane;
the solution starting module is connected with the solution self-adaptive adjusting module and the wireless base station and is used for starting an SSB wave beam configuration scheme in real time after receiving the dynamic information on the lane;
the tidal phenomenon sensing module is connected with the solution starting module and the traffic pipe monitoring system and is used for transmitting tidal information to the solution starting module after acquiring the tidal information; the wireless base station is arranged in the center of a road, and collects tide state data on two sides of the road under a set scanning time frequency so as to determine a busy side lane and a free side lane.
2. The system of claim 1, wherein the wireless network comprises a wireless network for accessing lane tide phenomena: the self-adaptive adjustment module of the solution comprises a judgment unit and a control unit which are connected, wherein the judgment unit is used for judging whether a preset condition is met or not through the acquired tidal state data, and the preset condition comprises fluctuation state data of a tidal phenomenon on a lane; and the control unit is used for calling and configuring the SSB wave beam corresponding to the wireless base station according to the SSB wave beam configuration scheme when the judging unit determines that the preset condition is met.
3. The system of claim 1, wherein the wireless network comprises a wireless network for accessing lane tide phenomena: adjusting handover parameters in the SSB beam configuration scheme includes: according to the fluctuation state data of the tide phenomenon on the lane, the SSB wave beam number ratio of the lanes on two sides is adaptively and gradually changed in different tide states.
4. A wireless network access method to lane tide phenomenon is characterized in that: the wireless network access system to the lane tide phenomenon according to any one of claims 1 to 3, wherein the access method comprises the following steps:
s1, when the tide phenomenon does not occur, the wireless base station distributes SSB wave beams with the same quantity for lanes on two sides of the road;
s2, when the tide is between a tide generating state and a tide high tide state, after the wireless base station detects tide state information on lanes of a road, determining a busy side lane and a free side lane, and starting an SSB wave beam configuration scheme in real time through the solution starting module, namely, the wireless base station gradually increases SSB wave beams for the busy side lane and decreases SSB wave beams for the free side lane within the scanning angle range of the lanes on the two sides; when the tide is in a high tide state and a tide fading state, the SSB wave beams added by the busy side lane are gradually reduced, and the SSB wave beams of the idle side lane are increased until the SSB wave beams of the two side lanes are in the same ratio quantity when the tide is in the fading state.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106341821A (en) * | 2016-09-28 | 2017-01-18 | 武汉邮电科学研究院 | LTE (Long Term Evolution)-based rail transit wireless data interference suppression method and system |
| CN109792275A (en) * | 2016-09-26 | 2019-05-21 | 瑞典爱立信有限公司 | Beam forming in wireless communication system |
| CN111182552A (en) * | 2019-12-11 | 2020-05-19 | 深圳华臻信息技术有限公司 | SSB wave beam dynamic configuration method in 5G base station and 5G base station |
| CN112616189A (en) * | 2020-12-10 | 2021-04-06 | 北京邮电大学 | Static and dynamic combined millimeter wave beam resource allocation and optimization method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109792275A (en) * | 2016-09-26 | 2019-05-21 | 瑞典爱立信有限公司 | Beam forming in wireless communication system |
| CN106341821A (en) * | 2016-09-28 | 2017-01-18 | 武汉邮电科学研究院 | LTE (Long Term Evolution)-based rail transit wireless data interference suppression method and system |
| CN111182552A (en) * | 2019-12-11 | 2020-05-19 | 深圳华臻信息技术有限公司 | SSB wave beam dynamic configuration method in 5G base station and 5G base station |
| CN112616189A (en) * | 2020-12-10 | 2021-04-06 | 北京邮电大学 | Static and dynamic combined millimeter wave beam resource allocation and optimization method |
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