WO2016204527A1 - Procédé de commande de fonctionnement de système de communication sans fil - Google Patents

Procédé de commande de fonctionnement de système de communication sans fil Download PDF

Info

Publication number
WO2016204527A1
WO2016204527A1 PCT/KR2016/006388 KR2016006388W WO2016204527A1 WO 2016204527 A1 WO2016204527 A1 WO 2016204527A1 KR 2016006388 W KR2016006388 W KR 2016006388W WO 2016204527 A1 WO2016204527 A1 WO 2016204527A1
Authority
WO
WIPO (PCT)
Prior art keywords
reliability information
antennas
user terminals
information
communication system
Prior art date
Application number
PCT/KR2016/006388
Other languages
English (en)
Korean (ko)
Inventor
손일수
Original Assignee
가천대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 가천대학교 산학협력단 filed Critical 가천대학교 산학협력단
Publication of WO2016204527A1 publication Critical patent/WO2016204527A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Definitions

  • the present invention relates to an operation control method of a wireless communication system that can maximize the overall network wireless transmission amount and transmission efficiency of a wireless communication system including a plurality of antennas.
  • a transmission antenna for transmitting wireless data to each user terminal is determined according to the position of the antenna, the position of the user terminal, the channel quality between the antenna and the user terminal, and the wireless data transmission to the user terminal is performed. .
  • Optimal transmission antenna determination and wireless data transmission control methods in a wireless communication system include an optimal central control method and a suboptimal central control method.
  • the optimal central control method is based on the assumption that there is an ideal central controller in the wireless communication system and knows all necessary radio channel information and interference information. It is a method of selecting a connection combination having a wireless transmission amount.
  • the central control method has an advantage of achieving optimal performance. However, as the total number of transmission antennas and user terminals increases, the amount of computation for optimization increases exponentially.
  • the sub-optimal central control method like the optimal central control method, assumes that there is an ideal central controller in the system and knows all necessary radio channel information. This method determines the connection sequentially.
  • the sub-optimal central control method has the advantage of lower computational complexity than the optimal central control method, but has a disadvantage of low performance.
  • the background technology of the present application is disclosed in Korean Unexamined Patent Publication No. 10-2013-0141941.
  • the present invention is to solve the above-mentioned problems of the prior art, a transmission antenna in a wireless communication system that can exhibit the performance of the optimal and maximum total wireless transmission rate and transmission rate with a small amount of operation compared to the operation control method of the conventional wireless communication system It is intended to provide a control method and an apparatus for performing the method.
  • the base station control method (a) a wireless transmission rate between the plurality of antennas and the plurality of user terminals and the plurality of user terminals and the plurality of antennas Generating first reliability information related to the maximum number of transmitting user terminals of each of the plurality of antennas based on a connection preference of (b) the number of user terminals connected to each of the first reliability information and the plurality of antennas; Generating second reliability information related to the control information; and (c) determining a connection pair of the plurality of antennas and the plurality of user terminals based on the first reliability information and the second reliability information.
  • a wireless transmission rate between the plurality of antennas and the plurality of user terminals and the plurality of user terminals and the plurality of antennas Generating first reliability information related to the maximum number of transmitting user terminals of each of the plurality of antennas based on a connection preference of (b) the number of user terminals connected to each of the first reliability information and the plurality of antennas; Generating second reliability information
  • an apparatus for controlling a wireless communication system includes a communication unit and a processor, wherein the processor is a wireless transmission rate between the plurality of antennas and a plurality of user terminals and the plurality of user terminals.
  • first reliability information related to the maximum number of transmitting user terminals of each of the plurality of antennas based on a connection preference between the user terminals of the plurality of antennas and the plurality of antennas; Generating second reliability information related to the first reliability information and the number of user terminals connected to each of the plurality of antennas; And determining a connection pair of the plurality of antennas and the plurality of user terminals based on the first reliability information and the second reliability information.
  • any one of the above-described problem solving means of the present invention by generating, exchanging and updating reliability information having a very small amount of information based on a message passing algorithm, it is possible to optimize the entire wireless communication system with a small amount of computation. The performance of a wireless transmission amount and a wireless transmission rate can be exhibited.
  • FIG. 1 is a block diagram showing a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a conceptual diagram illustrating a state in which a plurality of antennas and a user terminal exchange reliability information through functionally defined virtual nodes according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a control method of a wireless communication system according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a control method of a wireless communication system according to another embodiment of the present invention.
  • FIG. 5 is a block diagram showing a control device of a wireless communication system according to an embodiment of the present invention.
  • the present invention relates to a radio transmission rate and a radio of an antenna in an entire radio communication system by a central coordinator (controller) in a radio communication system including a plurality of antennas (or a base station or a transmission point) and a plurality of user terminals.
  • a central coordinator controller
  • a method and apparatus for maximizing and optimizing a transmission amount are also included in the radio communication system.
  • the central controller of the wireless communication system sets up virtual nodes corresponding to respective members of the wireless communication system, and reliability information (reliability message information) regarding connection preferences of the user terminal and the antenna between the respective nodes. By exchanging and updating, and repeating this process continuously, the total wireless transmission rate and transmission rate of the wireless communication system are induced to the optimum state.
  • the present application is also applicable to wireless communication systems of all kinds / types.
  • the present application may be applied to cellular systems such as 3GPP-LTE, 4G LTE / LTE-A, 5G communication systems, wireless LAN systems, IoT systems, automotive communication systems, and the like.
  • FIG. 1 is a block diagram showing a wireless communication system according to an embodiment of the present invention.
  • the number of antennas and user terminals interconnected in a wireless communication system is not limited, and assuming a wireless communication system including four antennas and four user terminals with reference to FIG. 1, according to an embodiment of the present invention A control method of the wireless communication system will be described.
  • the wireless communication system 100 may include a first antenna 11, a second antenna 12, a third antenna 13, and a fourth antenna 14. have.
  • the first antenna 11 and the first user terminal 21 are connected
  • the second antenna 12 and the second user terminal 22 are connected
  • the third antenna 13 and the third user terminal ( 23 may be connected
  • the fourth antenna 14 and the fourth user terminal 24 may be connected through a network.
  • the wireless communication system 100 further includes a central controller 30 connected to each of the antennas 11, 12, 13, and 14 to control the radio transmission operation of the antennas 11, 12, 13, and 14.
  • the central controller 30 is connected to the antenna (11, 12, 13, 14) by optical fiber to exchange information with the antenna (11, 12, 13, 14), each antenna 11 It may be a server device that can control the wireless transmission operation of, 12, 13, 14.
  • the user terminals 21, 22, 23, and 24 are devices capable of wireless communication, for example, a personal communication system (PCS), a global system for mobile communication (GSM), a personal digital cellular (PDC), and a personal handyphone (PHS).
  • PCS personal communication system
  • GSM global system for mobile communication
  • PDC personal digital cellular
  • PDA personal handyphone
  • System PDA
  • PDA Personal Digital Assistant
  • IMT International Mobile Telecommunication
  • CDMA Code Division Multiple Access
  • W-CDMA W-Code Division Multiple Access
  • WBRO Wireless Broadband Internet
  • the wireless communication device may include all kinds of wireless communication devices such as a smartphone, a smart pad, a smart television, a tablet PC, a notebook, and the like.
  • the network refers to a connection structure capable of exchanging information between respective nodes such as a plurality of terminals, a base station, a server, and antennas.
  • Examples of such a network include a 3rd generation partnership project (3GPP) network and a long term (LTE) term. Evolution (WIvolution) Network, World Interoperability for Microwave Access (WIMAX) Network, Internet, Local Area Network (LAN), Wireless Local Area Network (WLAN), Wide Area Network (WAN), Personal Area Network (PAN), Bluetooth (Bluetooth) network, satellite broadcasting network, analog broadcasting network, DMB (Digital Multimedia Broadcasting) network and the like, but is not limited thereto.
  • 3GPP 3rd generation partnership project
  • LTE long term
  • Evolution (WIvolution) Network World Interoperability for Microwave Access
  • WLAN Local Area Network
  • WAN Wide Area Network
  • PAN Personal Area Network
  • Bluetooth Bluetooth
  • satellite broadcasting network analog broadcasting network
  • DMB Digital Multimedia Broadcasting
  • Each user terminal 21, 22, 23, 24 receives a reference signal (pilot signal) at predetermined intervals from each antenna 11, 12, 13, 14, and based on the received reference signal It is possible to estimate and measure channel information (eg, channel gain) and signal quality of the network link with each antenna 11, 12, 13, 14. In addition, the user terminals 21, 22, 23, and 24 may transmit and report the estimated channel information to the antennas 11, 12, 13, and 14.
  • a reference signal pilot signal
  • channel information eg, channel gain
  • signal quality of the network link eg, channel quality of the network link with each antenna 11, 12, 13, 14.
  • the user terminals 21, 22, 23, and 24 may transmit and report the estimated channel information to the antennas 11, 12, 13, and 14.
  • the antennas 11, 12, 13, and 14 may transmit channel information received from the user terminals 21, 22, 23, and 24 to the central controller 30.
  • the central controller 30 determines a downlink (downlink data transmission) connection pair between the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 based on the received channel information.
  • the central controller 30 is a wireless transmission rate between the antenna (11, 12, 13, 14) and the user terminal (21, 22, 23, 24) and each antenna (11, 12, 13, 14) first reliability information may be generated based on the connection preference information between the user terminal 21, 22, 23, and 24.
  • the radio transmission rate between the antenna and the user terminal may be determined according to channel information, channel state, etc. between the antenna and the user terminal.
  • connection preference information between the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 may indicate that only one user terminal is connected to any one of the plurality of antennas 11, 12, 13, and 14; Under the premise of being connected, the connection probability value or the connection preference value for the plurality of antennas 11, 12, 13, and 14 of the user terminals 21, 22, 23, and 24 may be represented.
  • the first reliability information is a real value that increases as the preference for the connection between the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 increases, and each antenna 11, 12, 13 is used. It may be generated in consideration of the maximum number of transmitting user terminals that can be connected to (14).
  • the maximum number of transmitting user terminals may be a kind of system parameter determined in advance according to characteristics, types, performances, specification information, and the like of the antennas 11, 12, 13, and 14. Accordingly, the central controller 30 considers the maximum number of transmitting user terminals of the antennas 11, 12, 13, 14, and the antennas 11, 12, 13, 14 and the user terminals 21, 22, 23, 24.
  • First reliability information indicating a preference for a connection between each of the antennas 11, 12, 13, and 14 and each of the user terminals 21, 22, 23, and 24 associated with the wireless data rate is generated.
  • the central controller 30 may generate second reliability information related to the first reliability information and the number of user terminals connected to each of the plurality of antennas 11, 12, 13, and 14. Similar to the first reliability information, the second reliability information, each antenna (11, 12, 13, 14), provided that the maximum number of transmitting user terminals that can be connected to each antenna (11, 12, 13, 14) is limited. And a preference or probability value for the connection between the plurality of user terminals 21, 22, 23, and 24, and may be a real value that increases as the preference increases.
  • the first reliability information and the second reliability information are the same as Equations 1 and 2 below.
  • i or j is the index of the antenna i i ⁇ 1, 2,... , N ⁇ , and a or b is an index of the user terminal.
  • U ⁇ , ⁇ ai is the wireless transmission rate between the i-antenna and the a-user terminal
  • Is a set of user terminals located in the vicinity of the i-antenna
  • Is Wow It is a damping factor that satisfies.
  • the central controller 30 may include first reliability information for all cases of one-to-one connection relations between the plurality of antennas 11, 12, 13, and 14, and the plurality of user terminals 21, 22, 23, and 24, respectively. And second reliability information. Further, as can be seen from Equations 1 and 2, the first reliability information and the second reliability information are linked to each other, and the first reliability information and the second reliability information are generated, exchanged, and It will go through an update process. Until the values of the first reliability information and the second reliability information converge in a predetermined range (or values) as described below, the central controller 30 is based on the previous second reliability information obtained through generation and exchange. The first reliability information may be generated and updated, and the second reliability information may be generated and updated based on the updated first reliability information. Therefore, the central controller 30 uses the first reliability information and the second reliability information generated for the connection pair of one antenna and the user terminal, and the first reliability information and the second reliability information for the connection pair of the other antenna and the user terminal. Reliability information can be generated and updated.
  • the central controller 30 is each of a plurality of antennas (11, 12, 13, 14) and a plurality of user terminals (21, 22, 23, 24) according to the above-described process for a preset number of times.
  • the first reliability information and the second reliability information may be generated and updated for all cases of each one-to-one connection relationship.
  • the central controller 30 iteratively repeats the first reliability information until the variation amount with time of the first reliability information or the second reliability information has a value within a preset range. And generate and update the second reliability information.
  • first reliability information and the second reliability information indicate a preference for the connection between each antenna 11, 12, 13, and 14 and the plurality of user terminals 21, 22, 23, and 24.
  • first reliability information or the second reliability information is no longer changed or the amount of change is smaller than a preset value, it is no longer necessary to calculate the first reliability information and the second reliability information.
  • the central controller 30 may each of the plurality of antennas 11, 12, 13, 14 and the plurality of user terminals 21, 22, 23, 24 based on the first reliability information and the second reliability information. Can be determined. According to one embodiment of the invention, the central controller 30 is for each connection pair of each of the plurality of antennas (11, 12, 13, 14) and the plurality of user terminals (21, 22, 23, 24) The sum of the first reliability information and the second reliability information is calculated. In addition, the central controller 30 is a connection pair of an antenna and a user terminal having a maximum sum of the first reliability information and the second reliability information for each of the plurality of user terminals 21, 22, 23, and 24. Determine.
  • the central controller 30 may be configured with respect to a connection pair with each of the plurality of antennas 11, 12, 13, and 14 based on the respective user terminals 21, 22, 23, and 24 according to Equation 3 below. A sum of one reliability information and the second reliability information is calculated, and an i-antenna and an a-user terminal having the maximum sum are determined.
  • the fact that the sum of the first reliability information and the second reliability information for the connection pairs of the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 is large is that the corresponding antenna and the user It means that the preference for the connection between the terminals increases, and when the connection between the corresponding antenna and the user terminal is activated and the antenna performs downlink transmission to the user terminal, the wireless transmission rate and the transmission amount of the entire wireless communication system increase. Can mean.
  • the central controller 30 iteratively repeats the first reliability information until the variation amount according to the agreed time of the first reliability information and the second reliability information has a value within a preset range. And generating and updating the second reliability information, and determining a connection pair with an antenna having a maximum value for each user terminal.
  • the central controller 30 uses a look up table to record identification information of each antenna, specification information, maximum transmitting user terminals, wireless transmission rate, and the like, and based on the recorded information.
  • the first reliability information and the second reliability information may be calculated and updated.
  • the lookup table sets each reliability information or some of the elements included in each reliability information as a variable, and includes values that can be considered for each variable and reliability information corrected according to each variable value in the form of a table. It can be said to be created.
  • the central controller 30 requires that each user terminal is connected to only one of the plurality of antennas 11, 12, 13, 14, and each antenna 11, 12, 13, 14, assuming that the maximum number of transmitting user terminals that can be connected to each other is limited, considering the radio transmission rate between the antenna and the user terminal,
  • the connection preference may be calculated for the connection pair (first reliability information and second reliability information) and updated to determine the connection pair having the maximum preference.
  • FIG. 2 is a conceptual diagram illustrating a state in which a plurality of antennas and a user terminal exchange reliability information through functionally defined virtual nodes according to an embodiment of the present invention.
  • FIG. 2 is a conceptual diagram schematically illustrating the relationship between the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 that are intricately intertwined with each other in a network, and the node illustrated in FIG. It may be referred to as a virtual node (factor node, variable node) that defines the conditions and variables required by the central controller 30 to determine the connection relationship between the antenna of the active state and the user terminal.
  • a virtual node factor node, variable node
  • the plurality of virtual nodes includes conditional virtual nodes 201, 202, 203, and 204 corresponding to the antennas 11, 12, 13, and 14, and conditional virtual nodes corresponding to the respective user terminals 21, 22, 23, and 24. (211,212,213,214). Also, the conditional virtual node 201 and each conditional virtual node 211, 212, 213, 214 are connected to the variable virtual nodes 221, 222, 223, 224, and the conditional virtual node 202 and each conditional virtual node 211, 212, 213, 214 are connected to the variable virtual nodes 231, 232, 233, 234.
  • conditional virtual node 203 and each conditional virtual node 211, 212, 213, 214 are connected to variable virtual nodes 241, 242, 243, 244, and the conditional virtual node 204 and each conditional virtual node 211, 212, 213, 214 are connected to variable virtual nodes 251, 252, 253, 254.
  • the variable virtual nodes 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 251, 252, 253, 254 may be connected to the conditional virtual nodes 225, 226, 227, 228, 235, 236, 237, 238, 245, 246, 247, 248, 255, 256, 257, 258, respectively.
  • R i of the conditional virtual nodes 201, 202, 203, and 204 is a condition regarding the maximum number of transmitting user terminals that the i -antenna can cover, and may be represented by Equation 4 below.
  • Equation 4 is information indicating whether the i-antenna and the a-user terminal are connected to the i-antenna. If the sum is less than or equal to U i , i. If not satisfied, yields a negative (-) infinity.
  • Q a of the conditional virtual nodes 211, 212, 213, and 214 is a condition regarding the limitation of the number of connected antennas of the a-user terminal, and may be expressed by Equation 5 below.
  • Equation 5 is information indicating whether the i-antenna and the a-user terminal are connected to the a-user terminal. The value 0 is calculated only if the sum is 1, and the result of negative infinity is calculated otherwise. That is, Equation 5 indicates a condition that one user terminal (a-user terminal) should be connected to only one antenna.
  • W ai of the conditional virtual nodes 225, 226, 227, 228, 235, 236, 237, 238, 245, 246, 247, 248, 255, 256, 257, 258 means an expected wireless transmission rate when the a-user terminal and the i-antenna are connected.
  • the first reliability information and the second reliability information described with reference to FIG. 1 by the virtual nodes associated with each of the antennas 11, 12, 13, 14, and each of the user terminals 21, 22, 23, and 24.
  • Reliability information can be generated, exchanged, and updated.
  • conditional virtual nodes 201, 202, 203, and 204 are constraint conditions related to the information (eg, first reliability information) received from other nodes connected to each conditional virtual node 201, 202, 203, and 204 and the conditional virtual nodes 201, 202, 203, and 204.
  • information for example, second reliability information
  • conditional virtual nodes 211, 212, 213, and 214 are each based on information received from other nodes connected to the conditional virtual nodes 211, 212, 213, and 214, and constraint conditions related to the conditional virtual nodes 211, 212, 213, and 214 (Equation 5).
  • Connection preference information for each antenna may be generated based on the user terminal and transmitted to the variable virtual nodes 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 251, 252, 253, and 254.
  • variable virtual nodes 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 251, 252, 253, 254 are based on information received from other nodes connected to each variable virtual node (e.g., wireless data rate information and connection preference information received from conditional virtual nodes 211, 212, 213, 214).
  • information e.g, first reliability information
  • first reliability information associated with the preference for the connection pair of each antenna and the user terminal may be generated and transmitted to the conditional virtual nodes 201, 202, 203, and 204.
  • variable virtual nodes 221, 222, 223, 224, 231, 232, 233, 234, 241, 242, 243, 244, 251, 252, 253, 254 are based on information received from other nodes connected to each variable virtual node (e.g., wireless data rate information and connection preference information received from conditional virtual nodes 201, 202, 203, 204).
  • connection preference information for each antenna may be generated based on each user terminal and transmitted to the conditional virtual nodes 211, 212, 213, and 214.
  • the virtual nodes associated with each of the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 may be connected to the first reliability information, the second reliability information, and a specific condition.
  • the virtual nodes associated with each of the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 may be connected to the first reliability information, the second reliability information, and a specific condition.
  • Equation 6 becomes a negative infinity value, and thus the equations related to the conditions that each virtual node means.
  • the antenna in the activated state and the user terminal connected thereto may be determined.
  • FIG. 3 is a flowchart of a control method of a wireless communication system according to an embodiment of the present invention.
  • the control method of the wireless communication system illustrated in FIG. 3 may be performed by the plurality of antennas, the plurality of user terminals, and the central controller described above with reference to FIG. 1. Therefore, although omitted below, the descriptions of the antenna, the user terminal, and the central controller through FIG. 1 may also be applied to FIG. 3.
  • the central controller 30 is a channel of the network link between the antenna (11, 12, 13, 14) and the user terminal (21, 22, 23, 24) from the plurality of antenna (11, 12, 13, 14) Information can be received.
  • the antennas 11, 12, 13, and 14 receive channel information measured by the user terminals 21, 22, 23, and 24, and periodically transmit and report the information to the central controller 30.
  • the central controller 30 may set initial values of reliability information including the first reliability information and the second reliability information.
  • the initial value of each reliability information may be zero.
  • step S330 the central controller 30 is connected to each of the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24.
  • the first reliability information may be generated in consideration of the maximum number of transmitting user terminals that can be connected to each antenna 11, 12, 13, and 14. .
  • the central controller 30 may generate second reliability information related to the first reliability information and the number of user terminals connected to each of the plurality of antennas 11, 12, 13, and 14.
  • the first reliability information and the second reliability information on the premise that the maximum number of transmitting user terminals that can be connected to each antenna 11, 12, 13, and 14 are limited, and one user terminal includes a plurality of antennas 11, 12, 13.
  • a preference or probability value for the connection between each of the antennas 11, 12, 13, and 14 and the plurality of user terminals 21, 22, 23, and 24 will be displayed. It may be a real value that increases as the value increases.
  • the central controller 30 may determine whether to repeat the process of generating and updating the first reliability information and the second reliability information.
  • the central controller 30 is each of the plurality of antennas (11, 12, 13, 14) and each of the plurality of user terminals (21, 22, 23, 24) for a preset number of times.
  • the first reliability information and the second reliability information may be generated and updated for all cases of the one-to-one connection relationship.
  • the central controller 30 iteratively repeats the first reliability information and the first until the variation amount of the first reliability information or the second reliability information has a value within a preset range. 2 Create and update reliability information.
  • the central controller 30 may include the plurality of antennas 11, 12, 13, and 14 and the plurality of user terminals 21, 22, 23, and 24 based on the first reliability information and the second reliability information. Each connection pair of may be determined. As such, the central controller 30 calculates connection preferences (first reliability information and second reliability information) for each connection pair of each antenna and the user terminal in consideration of the wireless transmission rate between the antenna and the user terminal, and updates the entire radio. An antenna for transmitting white link data among a plurality of antennas is determined so that a wireless transmission rate of a communication system is maximized.
  • FIG. 4 is a flowchart illustrating a control method of a wireless communication system according to another embodiment of the present invention.
  • the control method of the wireless communication system illustrated in FIG. 4 may be performed by the plurality of antennas, the plurality of user terminals, and the central controller described above with reference to FIG. 1. Therefore, although omitted below, the descriptions of the antenna, the user terminal, and the central controller through FIG. 1 may be applied to FIG. 4.
  • the central controller 30 is the radio transmission rate between the antenna (11, 12, 13, 14) and the user terminal (21, 22, 23, 24) and each antenna (11, 12, 13, 14) and each user Based on the connection preference information of the terminals 21, 22, 23, and 24, the first reliability information may be generated in consideration of the maximum number of transmitting user terminals that can be connected to the antennas 11, 12, 13, and 14.
  • the central controller 30 may generate second reliability information related to the first reliability information and the number of user terminals connected to each of the plurality of antennas 11, 12, 13, and 14.
  • the central controller 30 may provide the first reliability information with respect to each of the pairs of antennas 11, 12, 13, and 14 and the respective pairs of the plurality of user terminals 21, 22, 23, and 24. And calculating the sum of the second reliability information.
  • the central controller 30 determines whether the sum of the first reliability information and the second reliability information converges. According to an embodiment of the present invention, the central controller 30 determines whether the variation amount according to the agreed time of the first reliability information and the second reliability information has a value within a preset range. The central controller 30 repeatedly performs steps S410, S420, and S430 when the variation amount of the sum of the first reliability information and the second reliability information is out of a value within a preset range, and performs the first reliability information and When the variation amount of the sum of the second reliability information has a value within a preset range, it is determined that the sum of the first reliability information and the second reliability information has converged.
  • the central controller 30 may determine a connection pair between the antenna and the user terminal having the maximum sum of the first reliability information and the second reliability information for each user terminal.
  • the fact that the sum of the first reliability information and the second reliability information for the connection pair of the antennas 11, 12, 13, and 14 and the user terminals 21, 22, 23, and 24 is large means that between the antenna and the user terminal is high. This means that the preference for the connection increases, and when the connection between the corresponding antenna and the user terminal is activated and the antenna performs downlink transmission to the user terminal, it means that the wireless transmission rate and the transmission amount of the entire wireless communication system increase. Can be.
  • the control device 500 of the wireless communication system may include a communication unit 510 and a processor 520.
  • the control device 500 of the wireless communication system may further include other components not shown in FIG. 5 in addition to the communication unit 510 and the processor 520.
  • the control device 500 of the wireless communication system may include a storage unit interworking with the communication unit 510 and the processor 520.
  • the storage unit may store the aforementioned lookup table, and the processor 520 may generate or update reliability information by using the lookup table stored in the storage unit.
  • control device 500 of the wireless communication system may be the central controller 30 shown in FIG.
  • the communication unit 510 may receive channel information of a network link between the plurality of antennas and the plurality of user terminals from the plurality of antennas. In addition, the communication unit 510 may transmit a command or signal required for an antenna to transmit downlink data according to the determination of the processor 520, and may transmit a command or signal necessary for a communication connection such as a handover command to a user terminal.
  • the processor 520 may further include a first reliability related to the maximum number of transmitting user terminals of each of the plurality of antennas based on a wireless transmission rate between the plurality of antennas and the plurality of user terminals and a connection preference between the plurality of user terminals and the plurality of antennas. Information can be generated. In addition, the processor 520 may generate second reliability information related to the first reliability information and the number of user terminals connected to each of the plurality of antennas. The processor 520 indicates a preference for the connection between each antenna and the user terminal under the premise that the maximum number of transmitting user terminals that can be connected to each antenna is limited, and that one user terminal should be connected to only one of the plurality of antennas. First reliability information and second reliability information are generated.
  • the processor 520 may determine a connection pair of a plurality of antennas and a plurality of user terminals based on the first reliability information and the second reliability information. According to an embodiment of the present invention, the processor 520 may calculate the sum of the first reliability information and the second reliability information with respect to a one-to-one connection relationship between each of the plurality of user terminals and each of the plurality of antennas. In addition, the processor 520 determines, for each of the plurality of user terminals, an antenna connection pair having a maximum sum of the first reliability information and the second reliability information. The processor 520 repeatedly generates and updates the first reliability information and the second reliability information until the variation amount according to the agreed time of the first reliability information and the second reliability information has a value within a preset range. When the sum of the 1st reliability information and the 2nd reliability information converges, the connection pair of the antenna and a user terminal which shows the maximum value can be determined.
  • Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.
  • Computer readable media may include both computer storage media and communication media.
  • Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
  • Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.
  • the above-described method for controlling a wireless communication system may be implemented in the form of a computer program stored in a recording medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de commande d'un système de communication sans fil comprenant une pluralité d'antennes et une pluralité de terminaux d'utilisateurs. Le procédé de commande d'un système de communication sans fil de la présente application comprend les étapes consistant à : (a) générer des premières informations de fiabilité associées au nombre maximum de terminaux de transmission d'utilisateurs de chaque antenne d'une pluralité d'antennes sur la base d'un débit de transmission sans fil entre la pluralité d'antennes et une pluralité de terminaux d'utilisateurs et la préférence de connexion de la pluralité de terminaux d'utilisateurs et de la pluralité d'antennes; (b) générer des secondes informations de fiabilité associées aux premières informations de fiabilité et au nombre de terminaux d'utilisateurs connectés à chaque antenne de la pluralité d'antennes; et (c) déterminer une paire de connexions de la pluralité d'antennes et de la pluralité de terminaux d'utilisateurs sur la base des premières informations de fiabilité et des secondes informations de fiabilité.
PCT/KR2016/006388 2015-06-19 2016-06-16 Procédé de commande de fonctionnement de système de communication sans fil WO2016204527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150087632A KR101656274B1 (ko) 2015-06-19 2015-06-19 무선통신시스템의 동작 제어 방법
KR10-2015-0087632 2015-06-19

Publications (1)

Publication Number Publication Date
WO2016204527A1 true WO2016204527A1 (fr) 2016-12-22

Family

ID=57102544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/006388 WO2016204527A1 (fr) 2015-06-19 2016-06-16 Procédé de commande de fonctionnement de système de communication sans fil

Country Status (2)

Country Link
KR (1) KR101656274B1 (fr)
WO (1) WO2016204527A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090063040A (ko) * 2007-12-12 2009-06-17 경희대학교 산학협력단 무선 센서 네트워크에서의 데이터 전송 방법
KR20110127054A (ko) * 2010-05-18 2011-11-24 엘지전자 주식회사 다중 셀 협력 통신을 위한 적응적 피드백 및 적응적 전송 모드 결정 방법 및 장치
US20120207193A1 (en) * 2011-02-16 2012-08-16 Kwang Taik Kim Method and apparatus of physical layer network coding
KR20130141941A (ko) * 2012-06-18 2013-12-27 삼성전자주식회사 다중셀 협력통신 시스템에서 협력적 신호 전송 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090063040A (ko) * 2007-12-12 2009-06-17 경희대학교 산학협력단 무선 센서 네트워크에서의 데이터 전송 방법
KR20110127054A (ko) * 2010-05-18 2011-11-24 엘지전자 주식회사 다중 셀 협력 통신을 위한 적응적 피드백 및 적응적 전송 모드 결정 방법 및 장치
US20120207193A1 (en) * 2011-02-16 2012-08-16 Kwang Taik Kim Method and apparatus of physical layer network coding
KR20130141941A (ko) * 2012-06-18 2013-12-27 삼성전자주식회사 다중셀 협력통신 시스템에서 협력적 신호 전송 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOHN, ILLSOO: "Distributed Downlink Power Control by Message-Passing for Very Large-Scale Networks", INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS, vol. 2015, January 2015 (2015-01-01), pages 1 - 12, XP055338244, ISSN: 1550-1329 *

Also Published As

Publication number Publication date
KR101656274B1 (ko) 2016-09-22

Similar Documents

Publication Publication Date Title
TWI449375B (zh) 使用實體附著點識別號之通信方法及裝置
US9066344B2 (en) State synchronization of access routers
US20120314623A1 (en) Bluetooth network configuration
US8180352B2 (en) Topology controlled discovery for next hop determination
CN113115256B (zh) 一种在线vmec服务网络选择的迁移方法
CN104737462A (zh) 无线通信网络中用于下行链路comp的动态多小区集群
US20240015534A1 (en) Model processing method, communication apparatus, and system
CN109699033B (zh) 面向成本和负载均衡的LoRa电力物联网基站部署方法及装置
CN108075816B (zh) 用于将高端rf与大规模mimo天线的受约束rf组合的预编码器设计
WO2019160385A1 (fr) Augmentation de la puissance du signal de référence dans un système de télécommunication par référence croisée à des applications connexes
US20200229055A1 (en) Base station and user equipment for mobile communication system
WO2014092301A1 (fr) Procédé et appareil de communication de transmission multisession à plusieurs bonds
WO2016137115A1 (fr) Procédé et dispositif de commande répartie pour système de communications sans fil
Zhu et al. Efficient hybrid multicast approach in wireless data center network
CN111092779B (zh) 网络资源配置方法、装置、计算机设备及可读存储介质
WO2016204527A1 (fr) Procédé de commande de fonctionnement de système de communication sans fil
US20170318591A1 (en) Methods and modules for handling channels in a radio spectrum
CN115002038B (zh) 一种基于云端分布式协调服务的智能调峰方法和系统
Chimeh Compelling services for 5G creation
US12120593B2 (en) Method, device and computer readable medium for controlling D2D routing
US8254336B1 (en) Multiple distinct physical channels for mesh control
Altman et al. A Braess type paradox in power control over interference channels
KR20210139194A (ko) 무선 통신 시스템에서의 경로 선택 방법 및 장치
JPWO2009081772A1 (ja) 接続ネットワーク及び無線通信制御方法
WO2016186266A1 (fr) Procédé de commande de fonctionnement de station de base dans un système de communication sans fil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16811940

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16811940

Country of ref document: EP

Kind code of ref document: A1