WO2015120711A1 - Procédé et dispositif d'attribution d'un spectre de fréquences inactives et terminal - Google Patents

Procédé et dispositif d'attribution d'un spectre de fréquences inactives et terminal Download PDF

Info

Publication number
WO2015120711A1
WO2015120711A1 PCT/CN2014/085128 CN2014085128W WO2015120711A1 WO 2015120711 A1 WO2015120711 A1 WO 2015120711A1 CN 2014085128 W CN2014085128 W CN 2014085128W WO 2015120711 A1 WO2015120711 A1 WO 2015120711A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
terminal
sinr
path loss
frequency band
Prior art date
Application number
PCT/CN2014/085128
Other languages
English (en)
Chinese (zh)
Inventor
苗婷
李岩
王斌
刘星
任龙涛
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2015120711A1 publication Critical patent/WO2015120711A1/fr

Links

Classifications

    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates to radio spectrum management techniques, and more particularly to a method, apparatus and terminal for allocating an idle spectrum.
  • wireless spectrum resources are an indispensable and extremely limited resource.
  • broadband multimedia wireless communication services more and more wireless services appear, and spectrum resources are in short supply.
  • a certain frequency band is allocated to a certain wireless service by a single-purpose and fixed allocation method, and then the frequency band is divided into several frequency bands and respectively granted to different wireless service operators for use.
  • the right of the wireless access system granted to an operator to use the frequency band in the whole time and in the entire geographical area, even if the wireless access system of the operator is not used, other systems do not have the right to use the frequency band.
  • This system with licensed spectrum is called a 4-authorized system or a primary system or primary user.
  • the cognitive system can select the idle spectrum to communicate according to the acquired spectrum occupancy information of the authorized system without affecting the communication of the authorized system.
  • the idle spectrum here is related to the time and location, and refers to the location of the cognitive system device.
  • the spectrum that the primary system does not use during the time period, the cognitive radio system is also called the secondary system or secondary user.
  • the cognitive radio system can improve the spectrum utilization, and efficiently and flexibly use the spectrum that is not used by the main system in a certain time and space area. Of course, this must be established when the licensed frequency band is idle or the licensed frequency band is only very small.
  • the business is communicating, in order to greatly improve the utilization of spectrum resources, and to resolve the contradiction between the growing demand for wireless communication services and the increasingly scarce spectrum resources.
  • the base station of the secondary system requests the spectrum coordinator or database for the idle spectrum, and the spectrum coordinator or database is idle according to the spectrum of the location of the base station.
  • the situation and the frequency usage of other base stations coordinate the allocation of idle spectrum for the base station. Since the secondary system cannot communicate with the primary user when it uses the primary system spectrum resources for communication, this is a prerequisite for cognitive radio technology to be implemented. Therefore, it is necessary to limit the usage spectrum and transmission parameters of the secondary system.
  • the transmission parameters are further limited for coexistence between secondary users. In this case, it is very likely that the secondary system cannot meet its quality of service requirements when using the idle spectrum.
  • the base station of the secondary system does not know whether the secondary system can satisfy the secondary system when communicating with the primary system idle spectrum.
  • the quality of service requirements and for the secondary system, if the idle spectrum cannot meet its quality of service requirements, and the base station communicates to the idle spectrum according to the spectrum coordinator or the allocated spectrum of the free spectrum allocated by the database, it will cause its communication performance. Declining, which has a serious impact on the quality of service of the secondary system.
  • the present invention proposes a method, a device and a terminal for allocating an idle spectrum, which can pre-estimate the quality of service of the idle spectrum.
  • the present invention provides a method for allocating an idle spectrum, including: a base station acquires a signal-to-noise ratio (SINR) when communicating using a free frequency band;
  • SINR signal-to-noise ratio
  • the base station calculates the communication performance when the idle frequency band is used for communication according to the obtained SINR; the base station performs a corresponding operation according to the calculated communication performance.
  • the performing, by the base station, the corresponding operation according to the calculated communication performance comprises: determining, by the base station, whether the calculated communication performance meets the quality of service requirement of the secondary system, and if yes, the base station uses the idle frequency band to communicate, otherwise re-initiating the resource Configure the request or discard this resource configuration.
  • the base station acquires a signal to noise ratio SINR when the communication is performed by using the idle spectrum, where the base station sends the measurement configuration message to the terminal;
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or, the configuration message includes a center frequency, a bandwidth, and a transmission power of at least one idle frequency band.
  • the calculating, by the base station, the SINR according to the power includes: The base station calculates a path loss between the base station and the terminal;
  • the base station randomly generates a shadow fading according to a variance and a mean of the shadow fading
  • the SINR is a difference between the transmit power and the path loss, the shadow fading, and the sum of the powers.
  • the calculating, by the base station, a path loss between the base station and the terminal includes:
  • the base station calculates a path loss between the base station and the terminal according to a path loss model
  • the base station measures an actual path loss between the base station and the terminal when the current working frequency band is working; and the base station calculates, according to the measured actual path loss, the base station and the terminal when communicating by using the idle frequency band.
  • the communication performance is one or more of a throughput, a transmission rate, and a packet loss rate.
  • the communication performance is a throughput
  • the calculating, by the base station, the communication performance according to the obtained SINR includes:
  • the base station calculates an average value of the obtained N SINRs; where N is an integer greater than or equal to 1;
  • the base station calculates the throughput according to a Shannon formula
  • the base station determines whether the calculated communication performance meets the quality of service requirements of the secondary system, including:
  • the base station compares the throughput and throughput thresholds
  • the base station determines that the throughput when using the idle frequency band for communication meets the minimum throughput requirement of the base station; otherwise, it is not satisfied.
  • the communication performance is a transmission rate
  • the calculating, by the base station, the communication performance according to the obtained SINR includes:
  • the base station calculates an average value of the obtained N SINRs; where N is an integer greater than or equal to 1;
  • the base station determines a modulation and coding scheme MCS level according to the calculated average value of the SINR and the SINR-BLER curve, and determines the transport block according to the bandwidth of the idle spectrum and the determined MCS level.
  • the size of the TB is a modulation and coding scheme MCS level according to the calculated average value of the SINR and the SINR-BLER curve, and determines the transport block according to the bandwidth of the idle spectrum and the determined MCS level.
  • the base station calculates the difference between the total number of bits transmitted in a unit time and the number of bits transmitted in a unit time; wherein the total number of bits transmitted in the unit time is the size and unit of the TB.
  • the product of the number of TBs transmitted in the time, the number of bits of the transmission error in the unit time is the product of the total number of bits and the block error rate BLER;
  • the base station determines whether the calculated communication performance meets the quality of service requirements of the secondary system, including:
  • the base station compares the transmission rate and the transmission rate threshold
  • the base station determines that the transmission rate when the idle frequency band is used for communication meets the minimum transmission rate requirement of the base station, otherwise it is not satisfied.
  • the communication performance is a packet loss rate
  • the base station calculates the communication performance according to the obtained SINR, including:
  • the base station calculates an average value of the obtained N SINRs; where N is an integer greater than or equal to 1;
  • the base station determines a modulation and coding scheme MCS level according to the calculated average value of the SINR and the SINR-BLER curve, and determines the size of the transport block TB according to the bandwidth of the idle spectrum and the determined MCS level;
  • the base station calculates the number of lost packets and the total number of packets according to the determined size of the TB;
  • the base station calculates a ratio of the number of lost packets to the total number of packets to obtain a packet loss ratio
  • the base station determines whether the calculated communication performance meets the quality of service requirements of the secondary system, including:
  • the base station compares the size of the packet loss rate and the packet loss rate threshold
  • the base station determines that the packet loss rate when using the idle frequency band for communication meets the maximum packet loss rate requirement of the base station, otherwise it is not satisfied.
  • the invention also proposes a method for allocating an idle spectrum, comprising:
  • the terminal receives a configuration message from the base station;
  • the terminal measures power according to the received configuration message;
  • the terminal sends the measured power to the base station; or, the terminal calculates the signal-to-noise ratio SINR according to the measured power, and sends the calculated SINR to the base station.
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or the configuration message includes a center frequency, a bandwidth, and a transmission power of at least one idle frequency band.
  • the calculating, by the terminal, the signal-to-noise ratio SINR according to the measured power the: calculating, by the terminal, a path loss between the base station and the terminal;
  • the terminal randomly generates a shadow fading according to the variance and the mean of the shadow fading;
  • the SINR is a difference between the transmit power and the path loss, the shadow fading, and the sum of the powers.
  • the terminal calculates a path loss between the base station and the terminal, where: the terminal calculates a path loss between the base station and the terminal according to a path loss model; or The actual path loss between the base station and the terminal in the current working frequency band; the terminal calculates a path loss between the base station and the terminal when communicating using the idle frequency band according to the measured actual path loss.
  • the present invention also provides an apparatus for allocating an idle spectrum, comprising at least:
  • the obtaining module is configured to: obtain a signal-to-noise ratio SINR when the idle frequency band is used for communication; and a calculation module, configured to: calculate a communication performance when the idle frequency band is used for communication according to the obtained SINR;
  • the judging module is set to: perform corresponding operations according to the calculated communication performance.
  • the determining module is configured to: determine whether the calculated communication performance meets the quality of service requirement of the secondary system; if satisfied, the base station uses the idle frequency band to communicate, otherwise re-initiate the resource configuration request or abandon the current resource configuration .
  • the acquiring module is configured to:
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or, the configuration message includes a center frequency, a bandwidth, and a transmission power of at least one idle frequency band.
  • the calculating the SINR according to the power is:
  • the SINR is a sum of the transmit power and the path loss, the shadow fading, and the power The difference.
  • the calculating a path loss between the base station and the terminal is:
  • the communication performance is one or more of a throughput, a transmission rate, and a packet loss rate.
  • the communication performance is throughput, and the calculating module is configured to:
  • N is an integer greater than or equal to 1
  • the determining module is set to:
  • the communication performance is a transmission rate
  • the calculating module is configured to: calculate an average value of the obtained N SINRs; where N is an integer greater than or equal to 1; an average value of the calculated SINR, SINR-
  • the BLER curve determines the modulation and coding scheme MCS level, determines the size of the transport block TB according to the bandwidth of the idle spectrum and the determined MCS level; calculates the transmission rate as the total number of bits transmitted per unit time and the number of bits transmitted in the unit time error
  • the difference between the unit time and the total number of bits transmitted in the unit time is the size and unit time of the TB
  • the product of the number of TBs transmitted internally, and the number of bits transmitted in the unit time is the product of the total number of bits and the block error rate BLER;
  • the determining module is set to:
  • the communication performance is a packet loss rate
  • the calculating module is configured to:
  • N is an integer greater than or equal to 1
  • MCS level determining a modulation and coding scheme MCS level according to the calculated average value of the SINR and the SINR-BLER curve, according to the bandwidth of the idle spectrum and the determined MCS Level determining the size of the transport block TB; calculating the number of lost packets and the total number of packets according to the determined size of the TB; calculating a ratio of the number of lost packets to the total number of packets to obtain a packet loss rate;
  • the determining module is set to:
  • the invention also proposes a terminal, which at least comprises:
  • a receiving module configured to: receive a configuration message from a base station
  • the measurement module is configured to: measure power according to the received configuration message
  • the sending module is configured to: send the measured power to the base station; or calculate a signal to noise ratio SINR according to the measured power, and send the calculated SINR to the base station.
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or, the configuration message includes a center frequency, a bandwidth, and a transmit power of at least one idle spectrum.
  • the calculated measured power to noise ratio SINR is:
  • the terminal calculates a path loss between the base station and the terminal
  • the terminal randomly generates a shadow fading according to the variance and the mean of the shadow fading;
  • the SINR is a difference between the transmit power and the path loss, the shadow fading, and the sum of the powers.
  • the terminal calculates a path loss between the base station and the terminal, where:
  • the embodiment of the present invention includes: a base station acquires a signal-to-noise ratio SINR when the idle frequency band is used for communication; the base station calculates a communication performance when the idle frequency band is used for communication according to the obtained SINR; and the base station performs a corresponding operation according to the calculated communication performance.
  • the communication performance is calculated according to the obtained SINR, and it is judged whether the communication performance meets the service quality requirement, thereby pre-estimating the service quality of the idle spectrum.
  • the base station determines whether the calculated communication performance meets the quality of service requirement of the secondary system. If the base station uses the idle frequency band for communication, the base station re-initiates the resource configuration request or discards the current resource configuration. That is, only when the communication performance satisfies the quality of service requirements of the secondary system, the base station uses the currently obtained idle frequency band for communication, thereby improving the communication performance of the secondary system.
  • FIG. 1 is a flowchart of a method for allocating idle spectrum according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of correspondence between data packets of PDCP, RLC, and MAC sub-layers in an embodiment of calculating a packet loss rate according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for allocating idle spectrum according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a device for allocating an idle spectrum according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the present invention provides a method for allocating an idle spectrum, including:
  • Step 100 The base station acquires a signal to noise ratio (SINR, Signal to Interference plus Noise Ratio) when the idle frequency band is used for communication.
  • SINR Signal to Interference plus Noise Ratio
  • the base station refers to the base station of the secondary system, which may be, but not limited to, an evolved Node B (eNB), a DeNB (Doror eNB), a Node B (NB, Node B), or an access node (AP, Access). Point ).
  • eNB evolved Node B
  • DeNB DeNB
  • NB Node B
  • AP Access
  • Point an access node
  • the base station sends a measurement configuration message to the terminal, and receives the SINR fed back by the terminal.
  • the base station sends a measurement configuration message to the terminal, receives the power fed back by the terminal, and calculates the SINR according to the power.
  • the terminal refers to a terminal of the secondary system, which may be, but is not limited to, a fixed communication terminal, a mobile communication terminal or a dedicated measurement terminal.
  • the configuration message includes a center frequency and a bandwidth of the at least one idle frequency band. If the terminal feeds back the SINR of the idle frequency band to the base station, the configuration message should also include the transmit power of the idle frequency band.
  • the power includes at least interference power and noise power.
  • the SINR calculation method is the same when using each idle band for communication.
  • the base station calculates the SINR according to the power, including:
  • the base station calculates the path loss between the base station and the terminal; the base station randomly generates a shadow fading according to the variance and the mean of the shadow fading; the SINR is the difference between the transmission power and the sum of the path loss, the shadow fading, and the power.
  • the base station calculates a path loss between the base station and the terminal according to the path loss model.
  • the path loss models used in different scenes or frequency bands are different.
  • the Okumura-Hata model can be used when the idle frequency band is the television idle spectrum. As shown in formula (1):
  • the base station calculates the path between the base station and the terminal Road loss, in decibels (dB), /c is the center frequency of the idle band, in megahertz (MHz), ⁇ is the distance between the terminal receiver and the base station transmitter, in kilometers (km), h BS is the effective height of the base station antenna, the unit is meters (m), h UE is the effective height of the terminal antenna, the unit is m, a (huE) is the correction coefficient of the terminal antenna; or, the base station calculates the path between the base station and the terminal
  • the loss includes: the base station measures the actual path loss between the base station and the terminal when working in the current working frequency band; the base station calculates the path loss between the base station and the terminal when using the idle frequency band for communication according to the measured actual path loss, as in formula (2) Shown as follows:
  • PL, PL 0 -26.161g( 0 ) + 26.161g( c ) ( 2 ) where / ⁇ is the center frequency of the current operating band, and PL Q is the actual path loss between the base station and the terminal when operating in the current operating band .
  • the PLo can be obtained by using the existing method, and the specific obtaining method is not used to limit the protection range of the present invention, and details are not described herein again.
  • Step 101 The base station calculates, according to the obtained SINR, the communication performance when the idle frequency band is used for communication.
  • communication performance includes, but is not limited to, one or more of throughput, transmission rate, and packet loss rate.
  • the base station calculates the communication performance according to the obtained SINR, including: the average value of the N SINRs obtained by the base station; wherein, N is an integer greater than or equal to 1; the average value, SINR of the base station according to the calculated SINR -BLER curve determines the Modulation and Coding Scheme (MCS) level, based on the bandwidth and determination of the idle band
  • MCS Modulation and Coding Scheme
  • the MCS level determines the size of the transport block (TBS, Transport Block Size);
  • the base station calculates the transmission rate as the difference between the total number of bits transmitted per unit time and the number of bits transmitted in a unit time error;
  • the total number of bits transmitted per unit time is the product of the size of TB and the number of TBs transmitted per unit time.
  • the number of bits transmitted in error per unit time is the product of the total number of bits and the block error ratio (BLER).
  • N SINRs are derived from the measurement results of N terminals.
  • the unit of the TBS is a bit.
  • the TBS can be obtained by using the existing method, and the specific obtaining method is not used to limit the scope of protection of the present invention, and details are not described herein again.
  • the BLER can be determined according to the curve relationship between the BLER and the SINR corresponding to the MCS.
  • the base station calculates the communication performance according to the obtained SINR, including: an average value of the N SINRs obtained by the base station; where, N is an integer greater than or equal to 1; and the base station calculates an average value of the SINR according to the calculated
  • the SINR-BLER curve determines the MCS level of the modulation and coding scheme, and determines the size of the transport block TB according to the bandwidth of the idle frequency band and the determined MCS level; the base station calculates the number of lost packets and the total number of packets according to the determined size of the TB; The ratio to the total number of packets gives the packet loss rate.
  • N SINRs are derived from the measurement results of N terminals.
  • the unit of the TBS is a bit.
  • the TBS can be obtained by using the existing method, and the specific obtaining method is not used to limit the scope of protection of the present invention, and details are not described herein again.
  • the number of lost packets and the total number of packets are calculated according to the determined size of the TB according to the behavior example in LTE.
  • the number of lost packets here refers to the packet data convergence protocol (PDCP, Packet Data Convergence).
  • PDCP packet data convergence protocol
  • Packet Data Convergence Packet Data Convergence
  • the total number of packets refers to the total number of PDCP SDUs.
  • the correspondence between the PDCP SDU and the TB can be obtained according to the correspondence between the RLC SDU and the RLC PDU and the correspondence between the MAC SDU and the MAC PDU.
  • the number of PDCP SDU packet loss per unit time is: KNBLER m+ PDCP SDU total packet number is:
  • K is the total number of TBs transmitted per unit time
  • BLER is the block error rate
  • m is the maximum number of retransmissions.
  • Step 102 The base station performs a corresponding operation according to the calculated communication performance.
  • the base station determines whether the calculated communication performance meets the service quality requirement of the secondary system. If the base station uses the idle frequency band for communication, the base station re-initiates the resource configuration request or abandons the current resource configuration.
  • the base station compares the throughput and the throughput threshold; when the throughput is greater than or equal to the throughput threshold, the base station determines that the throughput when using the idle frequency band for communication satisfies the minimum of the base station. Throughput requirements; otherwise not met.
  • the base station compares the transmission rate and the transmission rate threshold. When the transmission rate is greater than or equal to the transmission rate threshold, the base station determines that the transmission rate when using the idle frequency band for communication meets the minimum transmission rate requirement of the base station. Otherwise it is not satisfied.
  • the base station compares the packet loss rate and the packet loss rate threshold. When the packet loss rate is less than or equal to the packet loss rate threshold, the base station determines the packet loss rate when the idle frequency band is used for communication. The maximum packet loss rate requirement of the base station is met, otherwise it is not satisfied.
  • the throughput threshold, the transmission rate threshold, or the packet loss threshold may be preset or may be adjusted according to the quality of service requirements of the base station.
  • the base station selects one idle frequency band with better communication performance from multiple idle frequency bands, or randomly selects one idle frequency band, and then configures to the idle frequency band, that is, uses The idle frequency band performs communication; if all the idle frequency bands do not meet the communication performance requirement, the base station re-initiates the resource configuration request or discards the current resource configuration.
  • the present invention calculates communication performance based on the obtained SINR, and determines whether the communication performance satisfies the quality of service requirement, thereby pre-estimating the quality of service of the idle spectrum, and only when the communication performance meets the quality of service requirements of the secondary system, the base station uses The currently obtained idle frequency band is communicated, improving the communication performance of the secondary system.
  • the present invention also provides a method for allocating an idle spectrum, including:
  • Step 300 The terminal receives a configuration message from the base station.
  • the configuration message includes a center frequency and a bandwidth of the at least one idle frequency band. If the terminal feeds back the SINR of the idle frequency band to the base station, the configuration message should also include the transmit power of the idle frequency band.
  • Step 301 The terminal measures power according to the received configuration message.
  • Step 302 The terminal sends the measured power to the base station. Alternatively, the terminal calculates a signal-to-noise ratio SINR according to the measured power, and sends the calculated SINR to the base station.
  • the terminal calculates a signal to noise ratio SINR according to the measured power, including:
  • the terminal calculates the path loss between the base station and the terminal; the terminal randomly generates a shadow fading according to the variance and the mean of the shadow fading; the SINR is the difference between the transmission power and the sum of the path loss, the shadow fading, and the power.
  • the terminal calculates the path loss between the base station and the terminal according to the path loss model.
  • the terminal calculates the path loss between the base station and the terminal, including: the terminal measures the actual path loss between the base station and the terminal when the current working frequency band is working; and the terminal calculates the base station and the terminal when the idle frequency band is used for communication according to the measured actual path loss.
  • the present invention provides an apparatus for allocating an idle spectrum, which at least includes: an acquiring module, configured to acquire a signal-to-noise ratio (SINR) when communicating using a free frequency band;
  • SINR signal-to-noise ratio
  • a calculation module configured to calculate a communication performance of the idle frequency band according to the obtained SINR
  • the judging module is configured to perform a corresponding operation according to the calculated communication performance.
  • the determining module is specifically configured to:
  • the base station uses the idle frequency band to communicate, otherwise re-initiating the resource configuration request or abandoning the current resource configuration.
  • the acquiring module is specifically configured to:
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or the configuration message includes a center frequency, a bandwidth, and a transmission power of the at least one idle frequency band.
  • the SINR is calculated according to the power, which is specifically:
  • SINR is the difference between the transmission power and the sum of the path loss, the shadow fading, and the power.
  • the path loss between the base station and the terminal is calculated, which is specifically:
  • the actual path loss between the base station and the terminal when the current working frequency band is measured is measured; the path loss between the base station and the terminal when the idle frequency band is used for communication is calculated according to the measured actual path loss.
  • the communication performance is one or more of throughput, transmission rate, and packet loss rate.
  • the communication performance is throughput
  • the calculation module is specifically configured to: Calculating an average of the obtained N SINRs; wherein, N is an integer greater than or equal to 1; calculating a throughput according to the Shannon formula;
  • the judgment module is specifically used to:
  • the communication performance is a transmission rate
  • the calculation module is specifically configured to: calculate an average value of the obtained N SINRs; where N is an integer greater than or equal to 1; an average value of the calculated SINR, SINR-
  • the BLER curve determines the MCS level of the modulation and coding scheme, and determines the size of the transport block TB according to the bandwidth of the idle spectrum and the determined MCS level; and calculates the difference between the total number of bits transmitted per unit time and the number of bits transmitted in a unit time.
  • the value of the total number of bits transmitted in a unit time is the product of the size of the TB and the number of TBs transmitted per unit time, and the number of bits transmitted in a unit time is the product of the total number of bits and the block error rate BLER;
  • the judgment module is specifically used to:
  • the communication performance is a packet loss rate
  • the calculation module is specifically configured to:
  • N is an integer greater than or equal to 1
  • determining a modulation and coding scheme MCS level according to the calculated average value of the SINR and the SINR-BLER curve, according to the bandwidth of the idle spectrum and the determined MCS The level determines the size of the transport block TB; calculates the number of lost packets and the total number of packets according to the determined size of the TB; calculates the ratio of the number of lost packets to the total number of packets to obtain a packet loss rate;
  • the judgment module is specifically used to:
  • the present invention further provides a terminal, including at least:
  • a receiving module configured to receive a configuration message from a base station
  • a measuring module configured to measure power according to the received configuration message
  • a sending module configured to send the measured power to the base station; or, calculate a signal to noise ratio SINR according to the measured power, and send the calculated SINR to the base station.
  • the configuration message includes a center frequency and a bandwidth of at least one idle frequency band; or, the configuration message includes a center frequency, a bandwidth, and a transmission power of the at least one idle frequency band.
  • the signal-to-noise ratio SINR is calculated according to the measured power, specifically: the terminal calculates the path loss between the base station and the terminal; the terminal randomly generates the shadow fading according to the variance and the mean of the shadow fading; SINR is the transmission power and the road The difference between the loss, the shadow fading, and the sum of the powers.
  • the terminal calculates the path loss between the base station and the terminal, specifically: calculating the path loss between the base station and the terminal according to the path loss model;
  • the actual path loss between the base station and the terminal when the current working frequency band is measured is measured; the path loss between the base station and the terminal when the idle frequency band is used for communication is calculated according to the measured actual path loss.
  • the solution of the embodiment of the present invention calculates communication performance according to the obtained SINR, and determines whether the communication performance satisfies the quality of service requirement, thereby pre-estimating the quality of service of the idle spectrum.
  • the base station determines whether the calculated communication performance meets the quality of service requirement of the secondary system. If the base station uses the idle frequency band for communication, the base station re-initiates the resource configuration request or discards the current resource configuration. That is, only when the communication performance satisfies the quality of service requirements of the secondary system, the base station uses the currently obtained idle frequency band for communication, thereby improving the communication performance of the secondary system.

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif d'attribution d'un spectre de fréquences inactives ainsi qu'un terminal. Le procédé comprend les étapes au cours desquelles une station de base : obtient un rapport signal sur bruit (SINR) pendant une communication à l'aide d'un spectre de fréquences inactives ; calcule des performances de communication pendant la communication à l'aide du spectre de fréquences inactives en fonction du SINR obtenu ; et effectue une opération correspondante en fonction des performances de communication obtenues par calcul. Les modes de réalisation de la présente invention préestiment la qualité de service d'un spectre de fréquences inactives.
PCT/CN2014/085128 2014-02-17 2014-08-25 Procédé et dispositif d'attribution d'un spectre de fréquences inactives et terminal WO2015120711A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410053042.1 2014-02-17
CN201410053042.1A CN104853360A (zh) 2014-02-17 2014-02-17 一种分配空闲频谱的方法、装置及终端

Publications (1)

Publication Number Publication Date
WO2015120711A1 true WO2015120711A1 (fr) 2015-08-20

Family

ID=53799568

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/085128 WO2015120711A1 (fr) 2014-02-17 2014-08-25 Procédé et dispositif d'attribution d'un spectre de fréquences inactives et terminal

Country Status (2)

Country Link
CN (1) CN104853360A (fr)
WO (1) WO2015120711A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111510927A (zh) * 2020-04-28 2020-08-07 深圳中科国威信息***技术有限公司 一种认知WiFi的电视频段选择方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106535244B (zh) * 2015-09-11 2020-02-18 上海诺基亚贝尔股份有限公司 一种无线通信方法和设备
CN106027181B (zh) * 2016-07-15 2019-09-13 北京邮电大学 一种基于认知无线电技术的信道测量和反馈方法
CN110224788B (zh) * 2019-05-27 2021-12-07 中国联合网络通信集团有限公司 一种数据传输的方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101626604A (zh) * 2008-07-08 2010-01-13 电子科技大学 一种认知无线电***中基于公平性的功率和信道联合分配方法
CN101702635A (zh) * 2009-10-28 2010-05-05 北京邮电大学 一种基于认知无线电技术进行频谱切换的方法和***
CN102256262A (zh) * 2011-07-14 2011-11-23 南京邮电大学 基于分布式独立学习的多用户动态频谱接入方法
CN103179578A (zh) * 2013-03-29 2013-06-26 北京邮电大学 一种cr***中的频谱切换方法与装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103517277B (zh) * 2012-06-29 2018-03-27 电信科学技术研究院 认知无线电***中的频点选择方法和设备
CN103533550A (zh) * 2012-07-06 2014-01-22 电信科学技术研究院 认知无线电***中的频点选择方法和设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101626604A (zh) * 2008-07-08 2010-01-13 电子科技大学 一种认知无线电***中基于公平性的功率和信道联合分配方法
CN101702635A (zh) * 2009-10-28 2010-05-05 北京邮电大学 一种基于认知无线电技术进行频谱切换的方法和***
CN102256262A (zh) * 2011-07-14 2011-11-23 南京邮电大学 基于分布式独立学习的多用户动态频谱接入方法
CN103179578A (zh) * 2013-03-29 2013-06-26 北京邮电大学 一种cr***中的频谱切换方法与装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111510927A (zh) * 2020-04-28 2020-08-07 深圳中科国威信息***技术有限公司 一种认知WiFi的电视频段选择方法
CN111510927B (zh) * 2020-04-28 2023-09-05 深圳中科国威信息***技术有限公司 一种认知WiFi的电视频段选择方法

Also Published As

Publication number Publication date
CN104853360A (zh) 2015-08-19

Similar Documents

Publication Publication Date Title
KR102054183B1 (ko) 업링크 송신들을 위한 전력 제어
CN110972197B (zh) 数据传输方法、终端及存储介质
AU2016336443B2 (en) PTT network with radio condition aware media packet aggregation scheme
CN109417817B (zh) 使用触发信息的无线通信方法和使用该方法的无线通信终端
JP6559891B2 (ja) データ送信方法及び機器
CN108029158B (zh) 用于报告数据接收状态的***及方法
RU2625943C2 (ru) Способ для выбора сущности на основе полного качества линии связи
KR101879969B1 (ko) 데이터 전송 방법 및 디바이스
RU2683483C2 (ru) Система управления беспроводными ресурсами, беспроводная базовая станция, устройство ретрансляции, способ управления беспроводными ресурсами и программа
JP2020092465A (ja) Ｗｌａｎにおけるアップリンクマルチユーザ送信のためのクラス分けおよびサイレンシング
KR100570825B1 (ko) 무선 랜 시스템에서 인접 ｂｓｓ간의 간섭 감지 장치 및방법
US11284292B2 (en) Queuing latency aware buffer status report
WO2020182057A1 (fr) Procédé de transmission de données et dispositif associé
CN106162685B (zh) 一种获取接入技术网络间传输时延的方法及***
KR20080035660A (ko) 효과적인 무선자원 관리 방법
JPWO2017130801A1 (ja) 基地局及び送信方法
EP2995117A1 (fr) Delestage de communication depuis un reseau cellulaire vers un reseau local sans fil
WO2007128229A1 (fr) Procédé d'accès, station de relais, station de base et système d'un réseau d'accès à relais multisaut sans fil
CN105915312B (zh) 无线局域网的通信方法及通信装置、接入点和站点
US10511995B2 (en) Apparatus and method for controlling traffic in wireless communication system
WO2015120711A1 (fr) Procédé et dispositif d'attribution d'un spectre de fréquences inactives et terminal
Lee et al. BeaconRider: Opportunistic sharing of beacon air-time in densely deployed WLANs
CN116097709A (zh) 一种可靠性测量方法、装置及***
EP3506673B1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau d'accès
EP4338493A1 (fr) Techniques d'attribution de puissance de transmission en double connectivité

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: 14882712

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: 14882712

Country of ref document: EP

Kind code of ref document: A1