CN107889122B - Beam grouping scanning method and device - Google Patents
Beam grouping scanning method and device Download PDFInfo
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- CN107889122B CN107889122B CN201610865513.8A CN201610865513A CN107889122B CN 107889122 B CN107889122 B CN 107889122B CN 201610865513 A CN201610865513 A CN 201610865513A CN 107889122 B CN107889122 B CN 107889122B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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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
Abstract
The embodiment of the invention discloses a beam grouping scanning method, which comprises the following steps: the transmitting terminal groups all beams required for covering the whole cell to obtain at least one beam group; the transmitting terminal determines the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group; and the transmitting end scans each beam group according to the scanning time correspondingly allocated to each beam group. The embodiment of the invention also discloses a beam grouping scanning device.
Description
Technical Field
The present invention relates to the field of wireless communication systems, and in particular, to a beam packet scanning method and apparatus.
Background
In a future 3gpp 5G New wireless access system (NR, new Radio), the utilization and operation of high-frequency band Radio carrier resources will play an increasingly important role, and the wide high-frequency carrier resources can be sufficiently aggregated and utilized by carrier aggregation, tightly-coupled multi-connection and other modes, so as to improve the capacity and throughput performance of the NR system. However, due to the high frequency carrier propagation characteristics, the coverage area of the high frequency cell is relatively small, and in order to solve this problem, beam forming (beamforming) operation is generally required on the transmitting/receiving side (TX/RX), i.e., beams are directionally transmitted/received by using a multi-antenna phase technique, the coverage area of the cell is increased by converging the transmission power, and interference is reduced. Beamforming weights data first and then transmits the data to form a narrow transmission beam, and aims energy at a target user, so that the demodulation signal-to-noise ratio of the target user is improved, and the Beamforming is particularly effective for improving the throughput rate of cell edge users. Beamforming can obtain array gain, diversity gain, and multiplexing gain.
The prior art beam forming method is to group all resource blocks, then map with beams, select Coordinated Multiple Points Transmission/Reception (CoMP) users according to the user measurement results, interact with the adjacent base stations for cooperation information, and perform joint beam forming according to the corresponding resource blocks. Although the signal energy is increased and the interference is reduced, periodic omni-directional scanning of all beams is not achieved.
Disclosure of Invention
In order to solve the foregoing technical problems, embodiments of the present invention desirably provide a beam packet scanning method and apparatus, which implement periodic omnidirectional beam scanning under the condition that the capability and power of a transmitting end in a multi-antenna system are limited, improve a cell coverage area, implement omnidirectional coverage, and reduce interference to other beams.
The technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a beam group scanning method, where the method includes:
the transmitting terminal groups all the beams required by covering the whole cell according to the service load of each beam to obtain at least one beam group;
the transmitting terminal determines the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group;
and the transmitting end scans each beam group according to the scanning time correspondingly allocated to each beam group.
In the foregoing solution, before the grouping, at the transmitting end, all beams required for covering the whole cell to obtain at least one beam group, the method includes:
and determining the lower limit of the group number of all the wave beams required by the transmitting end to cover the whole cell according to the width of each wave beam formed by the transmitting end and the maximum wave beam number which can be formed by the transmitting end at each moment.
In the above scheme, the grouping, by the transmitting end, all beams required for covering the whole cell according to the service load of each beam to obtain at least one beam group includes:
calculating the service load of each wave beam according to the number of users under each wave beam and the service load of each user under the wave beam;
sequencing all beams from large to small according to the service load of each beam, and acquiring a beam sequence sequenced according to the service load;
sequentially grouping the beam sequences sequenced according to the service load from large to small to obtain grouped beam groups; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
In the above scheme, the determining, according to the width of each beam formed by the transmitting end and the maximum number of beams that the transmitting end can form at each time, a lower limit of a group number of all beams that the transmitting end needs to cover the whole cell is determined, including:
determining the total number of beams required by the transmitting end to cover the whole cell according to the width of each beam formed by the transmitting end;
and calculating the lower limit of the group number of the groups required by all the beams according to the total number of all the beams required by the transmitting end to cover the whole cell and the maximum beam number which can be formed by the transmitting end at each moment.
In the above solution, the determining, by the transmitting end, the scanning time correspondingly allocated to each beam group in a single scanning period according to the traffic load state of each beam group includes:
the transmitting terminal calculates the service load of each beam group according to the service load of each beam in each beam group;
and the transmitting terminal performs scanning time distribution on each beam group in a single scanning period according to the service load of each beam group, and determines that the scanning time correspondingly distributed to each beam group is positively correlated with the service load of each beam group.
In a second aspect, an embodiment of the present invention provides a beam packet scanning apparatus, where the apparatus includes: the device comprises an acquisition module, a determination module and a scanning module; wherein the content of the first and second substances,
the acquisition module is used for grouping all beams required by covering the whole cell according to the service load of each beam to acquire at least one beam group;
the determining module is used for determining the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group;
and the scanning module is used for scanning each beam group according to the scanning time correspondingly allocated to each beam group.
In the foregoing solution, the determining module is configured to determine, according to a width of each beam formed by the transmitting end and a maximum number of beams that the transmitting end can form at each time, a lower limit of a group number of all beams that are required for the transmitting end to cover the whole cell to be grouped.
In the above solution, the apparatus further comprises: a calculation module; wherein the content of the first and second substances,
the calculation module is configured to calculate a service load of each beam according to the number of users in each beam and the service load of each user in the beam;
the obtaining module is used for sequencing all the wave beams from large to small according to the service load of each wave beam and obtaining a wave beam sequence sequenced according to the service load;
the beam sequences sequenced according to the service load are sequentially grouped according to the service load from large to small to obtain grouped beam groups; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
In the above-described aspect of the present invention,
the determining module is configured to determine, according to a width of each beam formed by the transmitting end, a total number of beams required by the transmitting end to cover the whole cell;
the calculating module is used for calculating the lower limit of the group number of the groups required by all the beams according to the total number of all the beams required by the transmitting end to cover the whole cell and the maximum beam number which can be formed by the transmitting end at each moment.
In the above solution, the apparatus further comprises: a time allocation module; wherein the content of the first and second substances,
the calculation module is configured to calculate a total service load of each beam group according to the service load of each beam in each beam group;
the time distribution module is used for carrying out scanning time distribution on each beam group in a single scanning period according to the total service load of each beam group;
the determining module is configured to determine that the scanning time correspondingly allocated to each beam group is positively correlated with the traffic load of each beam group.
The embodiment of the invention provides a beam grouping scanning method and a beam grouping scanning device, which are characterized in that due to the limitation of the capacity and power of a transmitting terminal, beam grouping is carried out according to the service volume, beams with large service volume are distributed to a group, scanning time is distributed according to the service volume proportion, and then beam scanning is carried out according to the beam grouping result and the distributed scanning time, so that periodical omnibearing beam scanning is realized, the coverage range of a cell is improved, omnibearing coverage is realized, and the interference to other beams is reduced.
Drawings
Fig. 1 is a schematic diagram of beam group scanning according to an embodiment of the present invention;
fig. 2 is a first flowchart of a beam packet scanning method according to a first embodiment of the present invention;
fig. 3 is a schematic flow chart of a beam packet scanning method according to a first embodiment of the present invention;
fig. 4 is a schematic flow chart of a beam packet scanning method according to a first embodiment of the present invention;
fig. 5 is a schematic flowchart of a beam packet scanning method according to a first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a beam grouping and scanning apparatus according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a beam grouping and scanning apparatus according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station according to a third embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
When using beamforming technology, in order to enable the transmitting end to cover the whole area, it is necessary to transmit a downlink spatial synchronization signal (including a spatial synchronization Training Sequence (TS) and possibly a system broadcast message) in 360 degrees and all directions. When the number of antennas is small and the formed beams are small, the transmitting end can scan all beams at one time, but when the number of antennas is large and the formed beams are large, the capability and the power of the transmitting end are limited, the whole cell cannot be scanned at one time, and the beams need to be scanned circularly and circularly.
Referring to fig. 1, in the multiple antenna system, since multiple beams formed by multiple antennas are limited by the capability and power of a transmitting end, and it is difficult to scan all beams at one time, a packet scanning method may be adopted, that is, only part of beams are scanned within one scanning time, for example, 2 beams are scanned at one time as shown in fig. 1, until all beams are scanned. The overall thought of the invention is as follows: a scheme is given for beam grouping, grouping is carried out according to the service load of each beam, the beams with large service load are divided into a group, then different time is allocated according to the service load proportion for scanning, and each group is ensured to scan once.
Example one
Referring to fig. 2, a method for beam group scanning according to an embodiment of the present invention is shown, where the method may include:
s101, the transmitting terminal groups all beams required by covering the whole cell according to the service load of each beam to obtain at least one beam group.
It should be noted that, before step S101, the transmitting end needs to determine the lower limit number of beam groups of all beam groups that it needs to cover the whole cell, and therefore, this embodiment further includes:
s100: and determining the lower limit of the group number of all the wave beams required by the transmitting end to cover the whole cell according to the width of each wave beam formed by the transmitting end and the maximum wave beam number which can be formed by the transmitting end at each moment.
Specifically, referring to fig. 3, step 100 includes steps S1001 and S1002:
s1001, determining the total number of beams required by the transmitting end to cover the whole cell according to the width of each beam formed by the transmitting end.
It should be noted that, since each beam formed by the beam forming in the multiline system has a certain width, in order to make the transmitting end cover the whole area, the beam formed by the transmitting end needs to form a coverage surface of 360 degrees so as to cover the whole area. Therefore, assuming that the width of each beam is θ, the total number N of beams that the transmitting end needs to form is N =360/θ.
For example, assuming that the transmitting end of the multi-antenna system has a beam width θ of 15 degrees, in order for the transmitting end to cover the whole area, the transmitting end needs N =24=360/15 beams to cover the whole area.
S1002, calculating the lower limit of the group number of the groups required by all the wave beams according to the total number of all the wave beams required by the transmitting end to cover the whole cell and the maximum wave beam number which can be formed by the transmitting end at each moment.
It should be noted that, due to the limitation of the transmitting capability of the transmitting end and the limitation of the power of the transmitting end, the transmitting end can only form M beams with the beam width θ at each time, where the M beams are smaller than N beams that the transmitting end needs to form to cover the whole cell, the minimum group number of the groups required for all the beams, that is, the lower limit of the group number, is N/M, and when actually grouping, the group number needs to be greater than or equal to N/M.
Illustratively, in the actual beamforming process, because the capability and power of the transmitting end are limited, the transmitting end can only form 8 beams with the beam width of 15 at each moment, and therefore, the lower limit of the number of groups required to be grouped for all beams is N/M = 24/8=3.
In order to enable the transmitting end to cover the whole cell, the transmitting end may form beams in different directions at different times in a time division manner, so that the transmitting end can cover the whole area. Illustratively, at time T1, the transmitting end may form M
A beam in a first direction may form M +at time T2>
A beam in the second direction, at time Tk, may form M @>
A beam in the k-th direction. Therefore, by means of the above-mentioned time division manner>
The set of k directions can cover the area where all the directions of 360 degrees are located. Through the above-mentioned beam forming at the transmitting end by using the time division manner, all beams formed by the beam formed by the transmitting end at the k times in total can cover the whole 360-degree area covered by the beam. The number of beams formed at each time may be less than or equal to M, and the number of beams formed at each time needs to satisfy the requirement of covering the whole area in the scanning period.
After step S100, specifically, referring to fig. 4, step S101 includes steps S1011 to S1013:
s1011, calculating the service load of each beam according to the number of users under each beam and the service load of each user under the beam.
It should be noted that the calculation of the traffic load of each beam is to group the beams according to the traffic load and to serve as a basis for allocating the scanning time to the beam group.
S1012, sequencing all the beams from large to small according to the service load of each beam, and acquiring the beam sequence sequenced according to the service load.
It can be understood that after the service load of each beam is obtained by calculation, the service loads of each beam are arranged in an order from large to small, and then the sequenced beams can be obtained.
S1013, the beam sequences sequenced according to the service load are sequentially grouped according to the service load from big to small to obtain a grouped beam group; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
Illustratively, assuming that the actual grouping is K groups, dividing the beams sorted according to the traffic load into the sequentially grouped beams in the sorted order from large to small, and totally dividing the beams into the K groups, wherein K is greater than or equal to the minimum group number of the groups required by all the beams, and is N/M. P1 (P) with maximum traffic load 1 Less than M) beams are allocated to the first group to load the next largest P2 (P) 2 ≦ M) beams are assigned to the second group, proceeding in sequence until divided into K groups.
The grouping of the beams in step S1002 specifically includes: the 8 beams with the largest service load are divided into a group, the group is made to be group1, the 8 beams with the second largest service load are divided into a group, the group is made to be group2, the remaining 8 beams are made to be a group, and the group is made to be group3.
S102, the transmitting terminal determines the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group.
Specifically, referring to fig. 5, step S102 includes steps S1021 and S1022:
s1021, the transmitting end calculates the service load of each beam group according to the service load of each beam in each beam group.
Specifically, the total traffic load of each beam group can be calculated from the traffic loads of each beam group, and for the three groups of S1013, the total traffic load of group1 is S1, the total traffic load of group2 is S2, and the total traffic load of group3 is S3, based on the traffic loads of 8 beams of group 1.
And S1022, the transmitting end allocates scanning time to each beam group in a single scanning period according to the total service load of each beam group, and determines that the scanning time correspondingly allocated to each beam group is positively correlated with the service load of each beam group.
It can be understood that the time allocation is performed according to the traffic load proportion, and the larger the traffic load, the longer the scanning time is allocated. For example, let a scanning period be T, the scanning time allocated to each beam group can be calculated according to the traffic load of each beam group calculated in step S1021, and the scanning time of group1 is T 1 = ceil (T × (S1/S1 + S2+ S3)), the scan time of group2 is T 2 = ceil (T × (S2/S1 + S2+ S3)), the scan time of group3 is T 3 ＝T-t 1 -t 2 . Where ceil represents the smallest integer value that returns an expression greater than or equal to.
It should also be noted that, in order to ensure that each beam group is scanned once, the scanning time allocated to each beam group cannot be 0 or negative. In the above example, if the scanning time t3 of group3 is calculated to be 0 or a negative value, the time needs to be readjusted to ensure that each beam is scanned once. The scanning period T cannot be set too large, so that uplink synchronization of the UE is ensured.
S103, the transmitting end scans each beam group according to the scanning time correspondingly allocated to each beam group.
After the time distribution of each beam group is completed, the transmitting end scans the beams according to the distributed beam groups and the beam scanning time, and simultaneously, each beam group can send a broadcast in one scanning period to realize the omnibearing coverage.
The embodiment of the invention provides a beam grouping and scanning method, which is characterized in that due to the limitation of the capacity and power of a transmitting terminal, beams are grouped according to the service volume, beams with large service volume are distributed to a group, scanning time is distributed according to the service volume proportion, and then beam scanning is carried out according to the beam grouping result and the distributed scanning time, so that periodical and omnibearing beam scanning is realized, the cell coverage is improved, omnibearing coverage is realized, and the interference to other beams is reduced.
Example two
Referring to fig. 6, which shows a beam packet scanning apparatus 6 provided in an embodiment of the present invention, where the apparatus 6 may be applied to a base station, the apparatus 6 may include: an acquisition module 601, a determination module 602 and a scanning module 603; wherein the content of the first and second substances,
the obtaining module 601 is configured to group all beams required to cover the whole cell according to a service load of each beam, and obtain at least one beam group;
the determining module 602 is configured to determine, in a single scanning period, scanning time correspondingly allocated to each beam group according to a traffic load state of each beam group;
the scanning module 603 is configured to scan each beam group according to the scanning time correspondingly allocated to each beam group.
Further, referring to fig. 7, the apparatus further includes: a calculation module 604; wherein the content of the first and second substances,
the calculating module 604 is configured to calculate a service load of each beam according to the number of users in each beam and the service load of each user in the beam;
the obtaining module 601 is configured to sort all beams from large to small according to the service load of each beam, and obtain a beam sequence sorted according to the service load;
and sequentially grouping the beam sequences sequenced according to the service load from large to small according to the service load to obtain grouped beam groups; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
Further, the determining module 602 is configured to determine, according to a width of each beam formed by the transmitting end, a total number of beams required by the transmitting end to cover the whole cell;
the calculating module 604 is configured to calculate a lower limit of the group number of the groups required by all the beams according to the total number of all the beams required by the transmitting end to cover the whole cell and the maximum number of the beams that can be formed by the transmitting end at each time.
Further, referring to fig. 7, the apparatus further includes: a time allocation module 605; wherein the content of the first and second substances,
the calculating module 604 is configured to calculate a total traffic load of each beam group according to the traffic load of each beam in each beam group;
the time allocation module 605 is configured to perform scanning time allocation on each beam group in a single scanning period according to the total service load of each beam group;
the determining module 602 is configured to determine that the scanning time correspondingly allocated to each beam group is positively correlated to the traffic load of each beam group.
Specifically, for the description of the beam grouping scanning apparatus provided in the embodiment of the present invention, reference may be made to the description of the beam grouping scanning method in the first embodiment, and details of the embodiment of the present invention are not repeated herein.
In practical applications, the obtaining module 601, the determining module 602, the scanning module 603, the calculating module 604 and the time distributing module 605 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like, which are located in the beam grouping scanning apparatus 6.
The embodiment of the invention provides a beam grouping and scanning device, which carries out beam grouping according to the service volume due to the limitation of the capacity and power of a transmitting end, allocates beams with large service volume to one group, allocates scanning time according to the service volume proportion, and then carries out beam scanning according to the beam grouping result and the allocated scanning time, thereby realizing periodic omnidirectional beam scanning, improving the coverage area of a cell, realizing omnidirectional coverage and reducing the interference to other beams.
EXAMPLE III
Based on the same technical concept of the foregoing embodiment, referring to fig. 8, a base station 8 according to an embodiment of the present invention is shown, where the base station 8 may include: a communication interface 801, a memory 802, a processor 803, and a bus 804; wherein the content of the first and second substances,
the bus 804 is used for connecting the communication interface 801, the processor 803 and the memory 802 and the intercommunication among these devices;
the communication interface 801 is configured to perform data transmission with an external network element;
the memory 802 for storing instructions and data;
the processor 803 executes the instructions to: grouping all beams required for covering the whole cell according to the service load of each beam to obtain at least one beam group;
determining the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group;
and scanning each beam group according to the scanning time correspondingly allocated to each beam group.
In practical applications, the Memory 802 may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM) 802; or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD), or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the processor 1003.
The processor 803 may be at least one of an Application Specific Integrated Circuit (ASIC), a DSP, a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), an FPGA, a CPU, a controller, a microcontroller, and a microprocessor. It will be appreciated that the electronic devices used to implement the processor functions described above may be other devices, and embodiments of the present invention are not limited in particular.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. A method of beam packet scanning, the method comprising:
the transmitting terminal groups all the beams required by covering the whole cell according to the service load of each beam to obtain at least one beam group; wherein the width of each beam is the same;
the transmitting terminal determines the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group, and the method comprises the following steps:
the transmitting terminal calculates the service load of each beam group according to the service load of each beam in each beam group;
the transmitting terminal performs scanning time distribution on each beam group in a single scanning period according to the service load of each beam group, and determines that the scanning time correspondingly distributed to each beam group is positively correlated with the service load of each beam group;
wherein the scan time allocated for each beam group cannot be 0 or a negative value;
the transmitting end scans each beam group according to the scanning time correspondingly allocated to each beam group;
the method for the transmitting end to group all beams required by covering the whole cell according to the service load of each beam to obtain at least one beam group comprises the following steps:
calculating the service load of each wave beam according to the number of users under each wave beam and the service load of each user under the wave beam;
sequencing all beams from large to small according to the service load of each beam, and acquiring a beam sequence sequenced according to the service load;
the beam sequences sequenced according to the service load are grouped in sequence from big to small according to the service load to obtain a grouped beam group, and the method comprises the following steps: allocating P1 wave beams with the largest service load to a first group, and allocating P2 wave beams with the second largest service load to a second group, and sequentially performing the steps until the wave beams are divided into K groups; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
2. The method of claim 1, wherein before the transmitting end groups all beams needed to cover the whole cell and obtains at least one beam group, the method comprises:
and determining the lower limit of the group number of all the wave beams required by the transmitting end to cover the whole cell according to the width of each wave beam formed by the transmitting end and the maximum wave beam number which can be formed by the transmitting end at each moment.
3. The method of claim 2, wherein determining a lower limit of the number of groups for grouping all beams required by the transmitting end to cover the whole cell according to the width of each beam formed by the transmitting end and the maximum number of beams that the transmitting end can form at each time comprises:
determining the total number of beams required by the transmitting end to cover the whole cell according to the width of each beam formed by the transmitting end;
and calculating the lower limit of the group number of the groups required by all the beams according to the total number of all the beams required by the transmitting end to cover the whole cell and the maximum beam number which can be formed by the transmitting end at each moment.
4. An apparatus for beam group scanning, the apparatus comprising: the device comprises an acquisition module, a determination module, a calculation module, a time distribution module, a scanning module and a calculation module; wherein the content of the first and second substances,
the acquisition module is used for grouping all beams required by covering the whole cell according to the service load of each beam to acquire at least one beam group; wherein the width of each beam is the same;
the determining module is used for determining the scanning time correspondingly allocated to each beam group in a single scanning period according to the service load state of each beam group;
the scanning module is used for scanning each beam group according to the scanning time correspondingly allocated to each beam group;
the calculating module is further configured to calculate a total service load of each beam group according to the service load of each beam in each beam group;
the time distribution module is used for carrying out scanning time distribution on each beam group in a single scanning period according to the total service load of each beam group;
the determining module is further configured to determine that the scanning time correspondingly allocated to each beam group is positively correlated with the service load of each beam group;
wherein the scan time allocated for each beam group cannot be 0 or a negative value;
the calculating module is used for calculating the service load of each wave beam according to the number of users under each wave beam and the service load of each user under the wave beam;
the obtaining module is used for sequencing all the wave beams from large to small according to the service load of each wave beam and obtaining a wave beam sequence sequenced according to the service load;
and sequentially grouping the beam sequences sequenced according to the service load from large to small according to the service load to obtain a grouped beam group, wherein the grouped beam group comprises: allocating P1 wave beams with the largest service load to a first group, and allocating P2 wave beams with the second largest service load to a second group, and sequentially performing the steps until the wave beams are divided into K groups; the number of beams in each group is less than or equal to the maximum number of beams which can be formed at each moment; and the grouped beam group number is more than or equal to the group number lower limit of the groups required by all the beams.
5. The apparatus of claim 4,
the determining module is configured to determine a lower limit of a group number for grouping all beams required by the transmitting end to cover the whole cell according to the width of each beam formed by the transmitting end and the maximum number of beams that the transmitting end can form at each time.
6. The apparatus of claim 5,
the determining module is configured to determine, according to a width of each beam formed by the transmitting end, a total number of beams required by the transmitting end to cover the whole cell;
the calculating module is used for calculating the lower limit of the group number of the groups required by all the beams according to the total number of all the beams required by the transmitting end to cover the whole cell and the maximum beam number which can be formed by the transmitting end at each moment.
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| US6400335B1 (en) * | 2000-08-09 | 2002-06-04 | Lucent Technologies Inc. | Dynamic load sharing system and method using a cylindrical antenna array |
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| US6782277B1 (en) * | 1999-09-30 | 2004-08-24 | Qualcomm Incorporated | Wireless communication system with base station beam sweeping |
| JP3880554B2 (en) * | 2003-07-18 | 2007-02-14 | 松下電器産業株式会社 | Space division multiple access wireless medium access controller |
| US8548525B2 (en) * | 2007-06-28 | 2013-10-01 | Fimax Technology Limited | Systems and methods using antenna beam scanning for improved communications |
| US8675545B2 (en) * | 2009-08-24 | 2014-03-18 | Electronics & Telecommunications Research Institute | Method and apparatus for allocating traffic resources in multi-beam satellite communication system |
| ES2732454T3 (en) * | 2011-04-07 | 2019-11-22 | Blue Danube Systems Inc | Techniques for achieving high average spectral efficiency in a wireless system |
| CN102868477B (en) * | 2011-07-05 | 2017-04-05 | 中兴通讯股份有限公司 | A kind of method for multi-user pre-coding and device based on packet wave beam |
| CN103476043B (en) * | 2013-10-08 | 2014-08-06 | 河南工程学院 | Wireless local area network access point capable of intelligent antenna scanning covering and access |
| US10547418B2 (en) * | 2014-06-10 | 2020-01-28 | Qualcomm Incorporated | Coordinated operations of millimeter wavelength wireless access networks |
| EP3059877B1 (en) * | 2015-02-17 | 2021-01-27 | Industrial Technology Research Institute | Beamforming method of millimeter wave communication and base station and user equipment using the same |
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