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WO2017035940A1 - Procédé de communication de dispositif à dispositif (d2d), équipement utilisateur et station de base - Google Patents

Procédé de communication de dispositif à dispositif (d2d), équipement utilisateur et station de base Download PDF

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Publication number
WO2017035940A1
WO2017035940A1 PCT/CN2015/093523 CN2015093523W WO2017035940A1 WO 2017035940 A1 WO2017035940 A1 WO 2017035940A1 CN 2015093523 W CN2015093523 W CN 2015093523W WO 2017035940 A1 WO2017035940 A1 WO 2017035940A1
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Prior art keywords
channel
measurement
time
idle
connection
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English (en)
Chinese (zh)
Inventor
张晨璐
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • 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
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a D2D communication method, a user equipment, and a base station.
  • the device-to-device (D2D) communication technology refers to the direct communication between the user equipment (UE, User Equipment) by multiplexing the spectrum resources of the cell, instead of using the source terminal as the traditional communication service. It is sent to the base station, and then forwarded by the base station to the destination terminal. Therefore, D2D communication can utilize spectrum resources more efficiently and increase the capacity of the cellular network.
  • UE User Equipment
  • D2D multi-hop data transmission is a D2D-based distributed network, which introduces relay technology into the D2D communication system.
  • a specific D2D UE in the D2D distributed network has multiple D2D connections. Thereby, the network capacity can be further increased, the spectrum utilization rate can be improved, the system failure rate can be reduced, and the system performance and user experience can be improved.
  • the 3GPP protocol has not considered the multi-hop data transmission scenario based on D2D.
  • both the base station allocation mode and the self-selected resource allocation mode have their unavoidable drawbacks.
  • the embodiment of the invention provides a D2D communication method, a user equipment and a base station, which can realize resource allocation of the D2D distributed network and realize efficient use of the channel.
  • an embodiment of the present invention provides a D2D communication method, including:
  • the UE acquires a D2D distributed network data transmission request; the UE acquires a time-frequency domain resource for performing channel measurement; and after acquiring the D2D distributed network data transmission request, the UE measures one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle. If the channel is idle, the UE establishes a D2D connection on the channel.
  • the acquiring, by the UE, the time-frequency domain resource for performing channel measurement includes: acquiring, by the UE, a frequency domain range and a time domain range for performing channel measurement; and the time domain range includes the base station The specified measurement-specific subframe; or, the time domain range includes a silent period of normal data transmission and reception learned from the base station configuration.
  • the determining, by the UE, one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle includes: calculating, by the UE, the power of the signal of different signal sources on the channel The sum; if the sum of the powers is less than the preset threshold, the UE determines that the channel is an idle channel.
  • the determining, by the UE, one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle includes: when the UE detects a regular flag on the channel For the sexual signal, the UE determines that the channel is not idle.
  • the UE performs a preset threshold M measurement on the channel, If the results of the M measurements are all idle, the UE confirms that the channel is idle, and M measurements are discontinuous measurements or continuity measurements.
  • a fifth possible implementation manner of the first aspect if the channel is not idle, the UE jumps to the next channel for measurement or presets After the measurement avoidance time, the measurement is performed again on the channel.
  • the UE pre-occupies the channel, and the pre-occupied channel is a non-idle channel; The UE establishes a D2D connection through the channel, and when the time point at which the D2D connection is established is reached, the UE establishes a D2D connection through the channel.
  • the UE acquires the measurement random quantity B and the measurement duration T; the UE measures the channel where the time-frequency domain resource is located. Determining whether the channel is idle includes: determining, by the UE, the measurement start time of the UE according to the measurement random quantity B and the measurement time length T; the UE measures the channel within the measurement time length T from the measurement start time to determine whether the channel is idle.
  • the UE acquires a maximum number of relays of the D2D distributed network connection; the UE establishes a D2D connection on the channel.
  • the method includes: the UE establishes a D2D connection on the channel, and the number of relays used by the D2D connection is less than or equal to the maximum number of relays.
  • the UE acquires a maximum number of connections of the D2D distributed network connection;
  • the channel establishes a D2D connection, and the UE determines whether the number of D2D connections of the channel is greater than the maximum number of connections. If not, the UE establishes a D2D connection on the channel.
  • an embodiment of the present invention provides a D2D communication method, including:
  • the base station sends a data transmission request of the D2D distributed network to the UE; the base station sends the time-frequency domain resource for the channel measurement to the UE, and the time-frequency domain resource is used to enable the UE to measure the channel where the time-frequency domain resource is located to determine whether the channel is idle. If the channel is idle, a D2D connection is established through the channel.
  • the base station sends the time-frequency domain resource for performing channel measurement to the UE, where the base station sends the frequency domain range and the time domain range for performing channel measurement to the UE;
  • the domain range includes measurement-specific subframes, or the time interval of abnormal data transmission indicated by parameters.
  • the base station sends the measurement random quantity B and the measurement duration T to the UE, and measures the random quantity B and
  • the measurement duration T is used to cause the UE to determine the measurement start time on the time-frequency domain resource, and from the measurement start time, measure the channel within the measurement duration T to determine whether the channel is idle.
  • the base station sends the maximum number of relays of the D2D distributed network connection to the UE, and the maximum relay The number of relays used to limit the UE to establish a D2D connection on the channel should be less than or equal to the maximum number of relays.
  • the base station sends the maximum number of connections of the D2D distributed network connection to the UE, where the maximum number of connections is used.
  • the UE determines that its own number of D2D connections is not greater than the maximum number of connections, a D2D connection is established on the channel.
  • an embodiment of the present invention provides a user equipment, including:
  • a first acquiring module configured to acquire a D2D distributed network data transmission request
  • a second acquiring module configured to acquire a time-frequency domain resource for performing channel measurement
  • a measuring module configured to acquire a D2D distributed network data transmission in the first acquiring module
  • one channel of the time-frequency domain resource is measured to determine whether the channel is idle
  • a connection establishment module is configured to establish a D2D connection on the channel when the channel is idle.
  • the second acquiring module Specifically, the frequency domain range and the time domain range for performing channel measurement are obtained; the time domain range includes a measurement-specific subframe specified by the base station; or the time domain range includes a silent period of normal data transmission and reception learned according to the configuration of the base station.
  • the measuring module includes: a calculating unit, configured to calculate a sum of powers of signals of different signal sources on the channel; and a first determining unit, configured to When the threshold is less than the preset threshold, it is determined that the channel is an idle channel.
  • the measuring module is specifically configured to determine that the channel is not idle when the UE detects a regular landmark signal on the channel.
  • the measurement module performs a preset threshold M measurement on the channel If the results of the M measurements are all idle, the UE confirms that the channel is idle, and M measurements are discontinuous measurements or continuity measurements.
  • the measuring module is further configured to: when the channel is not idle, jump to the next channel for measurement Or re-measure on the channel after the preset measurement avoidance time.
  • the user equipment further includes: a processing module, configured to pre-empt the channel when the channel is idle, The pre-occupied channel is a non-idle channel; the connection establishing module is specifically configured to establish a D2D connection through the channel when a time point of establishing the D2D connection is reached.
  • the user equipment further includes: a third acquiring module, configured to acquire the measured random quantity B and the measurement duration T;
  • the module includes: a second determining unit, configured to determine a measurement start time of the UE according to the measurement random quantity B and the measurement time length T; and a measuring unit, configured to measure the channel within the measurement time length T from the measurement start time to determine Whether the channel is idle.
  • the user equipment further includes:
  • a fourth acquiring module configured to acquire a maximum number of relays of the D2D distributed network connection
  • the connection establishment module is specifically configured to establish a D2D connection on the channel, and the number of relays used by the D2D connection is less than or equal to the maximum number of relays.
  • the user equipment further includes:
  • a fifth obtaining module configured to obtain a maximum number of connections of the D2D distributed network connection
  • Connection establishment module including:
  • a determining unit configured to determine whether the number of D2D connections is greater than a maximum number of connections
  • the connecting unit is configured to determine, when the determining unit determines that the number of D2D connections is not greater than the maximum number of connections, establishing a D2D connection on the channel.
  • an embodiment of the present invention provides a base station, including:
  • a first sending module configured to initiate a data transmission request of the D2D distributed network to the UE
  • a second sending module configured to send, to the UE, a time-frequency domain resource for performing channel measurement, where the time-frequency domain resource is used to enable the UE to measure a channel where the time-frequency domain resource is located to determine whether the channel is idle, and if the channel is idle, pass the channel Establish a D2D connection.
  • the first sending module is specifically configured to send, to the UE, a frequency domain range and a time domain range for performing channel measurement; the time domain range includes a measurement specific subframe, Or the time interval for sending abnormal data indicated by parameters.
  • the base station further includes:
  • a third sending module configured to send a measurement random quantity B and a measurement duration T to the UE, where the measurement random quantity B and the measurement duration T are used to enable the UE to determine a measurement start time on the time-frequency domain resource, and from the measurement start time Initially, the channel is measured over the measurement duration T to determine if the channel is idle.
  • the base station further includes:
  • the fourth sending module is configured to send the maximum number of relays of the D2D distributed network connection to the UE, where the maximum number of relays is used to limit the number of relays used by the UE to establish a D2D connection on the channel, which should be less than or equal to the maximum number of relays.
  • the base station further includes:
  • a fifth sending module configured to send, to the UE, a maximum number of connections of the D2D distributed network connection, where the maximum number of connections is used to enable the UE to determine the number of D2D connections in the channel when the number of D2D connections is not greater than the maximum number of connections. Establish a D2D connection.
  • the UE acquires the D2D distributed network data transmission request, acquires the time-frequency domain resource for performing channel measurement, and then measures the channel where the time-frequency domain resource is located to determine whether the channel is idle, and if the channel is idle, A D2D connection is established through the channel.
  • the invention proposes a resource allocation process based on a D2D distributed network, which can realize resource allocation in a D2D multi-hop data transmission scenario based on a D2D distributed network.
  • FIG. 1 is a schematic diagram of a D2D distributed network in an embodiment of the present invention.
  • FIG. 2 is a flowchart of a D2D communication method according to an embodiment of the present invention.
  • FIG. 3 is another flowchart of a D2D communication method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of channel measurement time and measurement interval of D2D communication according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a pre-occupied channel of D2D communication according to an embodiment of the present invention.
  • FIG. 7 is another schematic diagram of a pre-occupied channel of D2D communication according to an embodiment of the present invention.
  • FIG. 8 is another schematic diagram of channel measurement time and measurement interval of D2D communication according to an embodiment of the present invention.
  • FIG. 9 is another schematic diagram of a pre-occupied channel of D2D communication according to an embodiment of the present invention.
  • FIG. 10 is another schematic diagram of a pre-occupied channel of D2D communication according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of a D2D communication method on a base station side according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of functional modules of a user equipment according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another functional module of a user equipment according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another functional module of a user equipment according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of functional blocks of a base station according to an embodiment of the present invention.
  • the embodiment of the invention provides a D2D communication method, a user equipment and a base station, which are used for XX. The details are described below separately.
  • D2D multi-hop data transmission is a D2D-based distributed network, which introduces relay technology into the D2D communication system, so that a certain D2D UE in the D2D distributed network has multiple D2D connections, as shown in the schematic diagram of the distributed network in Figure 1D2D.
  • a D2D UE can support multiple D2D connections.
  • an embodiment of the present invention provides a method for D2D communication, including:
  • the UE acquires a D2D distributed network data transmission request.
  • the base station or the UE itself needs to trigger the network construction process, and the UE acquires the D2D distributed network data transmission request, so that the UE can start to establish the D2D connection of the D2D distributed network.
  • the D2D distributed network data transmission request is sent by the base station to the UE through broadcast signaling or Radio Resource Control (RCC); if triggered by the UE itself
  • RRC Radio Resource Control
  • the D2D distributed network data transmission request is obtained from its own application layer, and the specific manner is not limited herein.
  • the UE acquires a time-frequency domain resource for performing channel measurement.
  • the UE When establishing a D2D connection based on a distributed network, the UE needs to perform channel measurement to find an idle channel. When performing channel measurement, the UE needs to acquire time-frequency domain resources for performing channel measurement.
  • the time-frequency domain resource may be sent by the base station to the time-frequency domain resource of the UE, or may be a time-frequency domain pre-configured by the serving base station of the serving cell where the UE is located or configured by the UE.
  • the base station sends a data transmission request of the D2D distributed network to the UE and sends the time-frequency domain resource for performing channel measurement to the UE, the two may be sent to the UE together through the same signaling. It can be sent to the UE through different signaling, which is not limited here.
  • the UE After acquiring the D2D distributed network data transmission request, the UE performs measurement on one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle.
  • the frequency domain range of the time-frequency domain resource acquired by the UE is divided into multiple channels. After acquiring the D2D distributed network data transmission request, the UE measures the channel where the time-frequency domain resource is located to find an idle channel. Is to measure one of the channels to determine if the channel is idle.
  • the UE If the channel is idle, the UE establishes a D2D connection on the channel.
  • the UE After the UE measures the channel, when it is determined that the channel is an idle channel, the UE establishes a D2D connection on the channel.
  • the UE after acquiring the D2D distributed network construction command, acquires the time-frequency domain resource for performing channel measurement, and then measures the channel where the time-frequency domain resource is located to determine whether the channel is idle, and if the channel is idle, Then a D2D connection is established through the channel.
  • the invention proposes a resource allocation process based on a D2D distributed network, which can realize resource allocation in a D2D multi-hop data transmission scenario based on a D2D distributed network.
  • the time-frequency domain resources acquired by the UE include a time domain range and a frequency domain range.
  • the frequency domain range in which the UE performs measurement may be some subchannels directly sent by the base station to the UE through broadcast signaling or Radio Resource Control (RCC) signaling, or may be used by the base station.
  • the D2D communication has a large frequency domain range, and the UE divides the frequency domain resources according to its own needs to form a plurality of subchannels.
  • the time domain range that the UE performs the measurement may be a measurement-specific subframe that is sent by the base station through the broadcast signaling or the RCC signaling, or may be a configuration parameter that the base station sends to the UE, and the UE learns the normal data through the UE according to the configuration parameter.
  • the quiet period of transmission and reception is performed for channel measurement.
  • the silent period is the idle period of normal data transmission, for example, the Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframe or time division double. Guard period (GP) in a special sub-frame of Time Division Duplexing (TDD).
  • the method of idle detection of a channel may be judged by the sum of signal powers on the channel, which is described in detail below:
  • an embodiment of the present invention provides a D2D communication method, including:
  • the UE acquires a D2D distributed network data transmission request.
  • the base station or the UE itself needs to trigger the network construction process, and the UE acquires the D2D distributed network data transmission request, so that the UE can start to establish the D2D connection of the D2D distributed network.
  • the D2D distributed network data transmission request is sent by the base station to the UE through broadcast signaling or Radio Resource Control (RCC); if triggered by the UE itself
  • RRC Radio Resource Control
  • the D2D distributed network data transmission request is obtained from its own application layer, and the specific manner is not limited herein.
  • the UE acquires a time-frequency domain resource for performing channel measurement.
  • the UE When establishing a D2D connection based on a distributed network, the UE needs to perform channel measurement to find an idle channel. When performing channel measurement, the UE needs to acquire time-frequency domain resources for performing channel measurement.
  • the time-frequency domain resource may be sent by the base station to the time-frequency domain resource of the UE, or may be a time-frequency domain pre-configured by the serving base station of the serving cell where the UE is located or configured by the UE.
  • the base station sends a data transmission request of the D2D distributed network to the UE and sends the time-frequency domain resource for performing channel measurement to the UE, the two may be sent to the UE together through the same signaling. It can be sent to the UE through different signaling, which is not limited here.
  • the UE calculates a sum of powers of signals of different signal sources on one of the channels in which the time-frequency domain resource is located.
  • the frequency domain range in the time-frequency domain resource acquired by the UE is divided into multiple sub-channels.
  • the UE measures the channel where the time-frequency domain resource is located to find an idle channel, and the specific measurement is performed. At the time, one of the channels is measured to determine if the channel is idle.
  • the specific measurement method is: the UE calculates the sum of powers ⁇ Rx of the signals of different signal sources on the channel, and in particular, if the detection channel is not in the same frequency band as the current working frequency of the current UE,
  • the measurement gap is configured by the base station or the UE spontaneously, and the inter-frequency measurement is initiated within the measurement gap time.
  • the UE determines whether the sum of powers is less than a preset threshold to determine that the channel is an idle channel.
  • the UE determines that the channel is an idle channel. If the channel is greater than or equal to the preset threshold, the UE determines that the channel is a non-idle channel.
  • the preset threshold may be sent by the base station through the measurement parameter, or may be configured in the pre-configured parameter of the UE.
  • the UE in order to avoid interference caused by a short-time channel idle occupied channel, the UE performs multiple measurements on the channel in a preset time, and the number of measurements is a preset threshold M, if M measurements are performed. When the result is idle, the UE considers that the channel is truly idle. It should be noted that the M measurement may be a discontinuity measurement or a continuity measurement.
  • the UE If the channel is idle, the UE establishes a D2D connection on the channel.
  • the UE After the UE measures the channel, when it is determined that the channel is an idle channel, the UE establishes a D2D connection on the channel.
  • the UE If the channel is not idle, the UE jumps to the next channel for measurement or re-measures the channel after the preset measurement avoidance time.
  • the UE If the UE detects that the channel is not idle, the UE jumps to the next subchannel of the time frequency domain resource for measurement, or re-measures the channel after the preset measurement avoidance time.
  • the UE when the UE detects a regular landmark signal on the channel, indicating that other UEs have pre-occupied the channel, the UE may determine that the channel is a non-idle channel.
  • the UE may determine whether the measurement channel is idle by calculating whether the sum of powers of different signals on the channel is less than a preset threshold, or determine whether the channel is idle by detecting whether the channel has a regular iconic signal, thereby improving The achievability of the program.
  • multiple UEs perform channel measurement on a time-frequency domain resource at the same time.
  • the embodiment of the present invention adopts pre-occupied channel and random access. Measuring time mechanism. The following is a detailed description:
  • an embodiment of the present invention provides a D2D communication method, including:
  • the UE acquires a D2D distributed network data transmission request.
  • the base station or the UE itself needs to trigger the network construction process, and the UE acquires the D2D distributed network data transmission request, so that the UE can start to establish the D2D connection of the D2D distributed network.
  • the UE acquires a time-frequency domain resource for performing channel measurement.
  • channel measurement is required to find an idle channel.
  • the UE needs to acquire time-frequency domain resources for performing channel measurement.
  • the time-frequency domain resource may be sent by the base station to the time-frequency domain resource of the UE, or may be a time-frequency domain pre-configured by the serving base station of the serving cell where the UE is located or configured by the UE.
  • the time-frequency domain resource for performing channel measurement includes a time domain range and a frequency domain range. Therefore, the UE actually acquires a time domain range for performing channel measurement and a frequency domain range for performing measurement.
  • the frequency domain range in which the UE performs measurement may be some subchannels directly sent by the base station to the UE through broadcast signaling or Radio Resource Control (RCC) signaling, or may be used by the base station.
  • the D2D communication has a large frequency domain range, and the UE divides the frequency domain resources according to its own needs to form a plurality of subchannels.
  • the time domain range that the UE performs the measurement may be a measurement-specific subframe that is sent by the base station through the broadcast signaling or the RCC signaling, or may be a configuration parameter that the base station sends to the UE, and the UE learns to pass certain normal data according to the configuration parameter.
  • the silent period of transmission and reception is used for channel measurement.
  • the silent period is the idle period of normal data transmission, for example, Multicast/Multicast Single Frequency Network (MBSFN) subframe or time division duplex (Time Division) Duplexing, TDD) Guard period (GP) in special subframes.
  • MBSFN Multicast/Multicast Single Frequency Network
  • TDD Time Division duplex
  • Guard period GP
  • the UE acquires the measured random quantity B and the measurement duration T.
  • the UE When the UE performs the channel measurement, in order to avoid the measurement conflict caused by the D2D distributed network node performing channel measurement at the same time, the UE acquires the measurement random quantity B, which is used to determine the random time quantity that the UE initiates the channel measurement, and the UE acquires The measurement duration T, T is the continuous measurement time of the channel measurement by the UE.
  • the measurement random quantity B may be sent by the base station to the UE through dedicated signaling, or may be determined by the UE itself, or may be configured by the base station to have a random quantity B pool, and the UE A random amount B, which is measured by the UE, is randomly selected from the random amount B pool.
  • the measurement duration T may be sent by the base station to the UE through the broadcast signaling, or may be a fixed constant specified by the protocol, or may be pre-configured by the UE itself, which is not limited herein.
  • the measurement of the random quantity B, the measurement time length T, and the measurement time-frequency domain resource are all sent by the base station, it may be delivered as a parameter of the channel measurement in one signaling, or may be different.
  • the signaling is sent. The specific method is not limited here.
  • the UE determines, according to the measured random quantity B and the measurement duration T, a measurement start time of the UE on the time-frequency domain resource.
  • the measurement start time of the UE on the time-frequency domain resource is determined according to the measurement random quantity B and the measurement duration T, so that each UE is measured on the time-frequency domain resource.
  • the start time is different and the time for the measurement can be staggered.
  • the UE starts measuring, according to the measurement start time, one of the channels in which the time-frequency domain is located within the measurement duration T to determine whether the channel is idle.
  • the UE After determining the measurement start time, the UE measures one channel of the time-frequency domain within the measurement duration T from the respective measurement start time to determine whether the channel is idle.
  • the UE pre-occupies the channel.
  • the channel is pre-occupied.
  • the pre-occupied signal is sent on the channel, and the pre-occupied signal may be an irregular power signal sent on a channel, or may be a regular identifier signal, and the regular identifier signal may be a fixed transmission period and sent. Duration, the specific signal of the format sent.
  • the UE When the time point of establishing the D2D connection is reached, the UE establishes a D2D connection on the channel.
  • the UE After the UE pre-occupies the channel, when the time point at which the UE establishes the D2D connection is reached, the UE establishes a D2D connection on the channel.
  • the UE determines the measurement start time on the channel where the frequency domain resource is located during the channel measurement by measuring the random quantity B and the measurement duration T, so that the measurement access time of each UE can be randomly staggered, and multiple The UE simultaneously initiates measurement collisions that occur in the measurement.
  • the UE when the UE discovers the idle channel, the UE preempts the channel to prevent other UEs from occupying the channel, thereby avoiding resource allocation conflict.
  • the UE determines, according to the measured random quantity B and the measurement duration T, that the UE is at the time
  • the specific manner of measuring the start time on the frequency domain resource may include the following two types:
  • the product of B and T is used as the measurement start time at the corresponding time point on the time-frequency domain resource.
  • the UE uses the N1 time units after the start of the time domain resource given by the time-frequency domain resource as the measurement start time of the UE, and N1 is the product of the measured random quantity B and the measurement duration T, and the measurement start time that satisfies other UEs is T.
  • the random multiple of the measurement start time of the different UEs is completely staggered, so that the measurement start time of the UE is greater than or equal to the measurement end time of the previous UE, and the channel measurement times of different UEs do not overlap.
  • UE1 confirms that channel 2 is an idle channel. If there is no time point until the UE establishes a D2D connection, for example, the UE must initiate a D2D connection at the boundary of the subframe, then The UE will not initiate a D2D connection immediately. At this time, UE2 initiates channel measurement, and if channel 2 is considered to be an idle channel, it will also initiate a D2D connection at the subframe boundary, thereby still causing UE1 and UE2 to use the same resource conflict.
  • the UE1 needs to send a pre-occupied channel after the discovery channel is idle, preventing other UEs from occupying the channel. Then, the UE pre-occupies the channel to prevent other UEs from occupying the channel. If the channel is pre-occupied by transmitting a no-power signal, the channel pre-occupation is as shown in FIG. 6. If the regularly-identified signal is transmitted, the channel pre-occupation is as shown in FIG. 7, and the regular identification signal is a periodic characteristic signal. .
  • the UE uses the N2 time units after the start of the time domain resource given by the time-frequency domain resource as the measurement start time of the UE, and N2 is the measured random quantity B, and the random quantity B is a random number, so different UEs are used in this manner.
  • the measurement time is not completely staggered, and the channel measurement time of different UEs may overlap.
  • the UE1 needs to send a pre-occupied channel at the beginning of the next measurement time immediately after the discovery channel is idle.
  • the channel pre-occupation is as shown in FIG. 9. If the regularly-identified signal is transmitted, the channel pre-occupation is as shown in FIG. 10, and the regular identification signal is a periodic characteristic signal. .
  • the UE may also obtain a maximum number of relays of the D2D distributed network connection, so as to limit the number of relays used by the UE to establish a D2D connection on the channel. Equal to the maximum number of relays.
  • the maximum number of relays may be sent by the base station to the UE through broadcast signaling or other dedicated signaling, or may be a parameter pre-configured by the UE, or may be a parameter defined by the protocol, and the specific manner is not performed here. limited.
  • the UE obtains the maximum number of connections of the D2D distributed network connection before establishing the D2D distributed network connection, and the UE determines whether the number of D2D connections is greater than the maximum number of connections before establishing the D2D connection. If not greater, the UE establishes a D2D connection on the channel.
  • the maximum number of connections may be sent by the base station to the UE through broadcast signaling or other dedicated signaling, or may be a parameter pre-configured by the UE, or may be a parameter defined by the protocol, and the specific manner is not limited herein. .
  • the UE if the UE performs the measurement on the channel in the D2D distributed network networking mode controlled by the base station, the parameter will be reported according to the predefined measurement result.
  • the channel measurement result is reported to the base station.
  • the pre-defined measurement result reporting parameters include reporting time, reporting format, and the like.
  • a D2D communication method provided in an embodiment of the present invention includes:
  • the base station sends a D2D distributed network data transmission request to the UE.
  • the UE establishes a D2D multi-hop connection, which may be triggered by the base station.
  • the base station When triggered by the base station, the base station sends a data transmission request of the D2D distributed network to the UE, thereby triggering the UE to perform channel measurement and establishing a D2D multi-hop connection.
  • the base station sends a time-frequency domain resource for performing channel measurement to the UE.
  • the base station sends a time-frequency domain resource for performing channel measurement to the UE, where the frequency domain range of the time-frequency domain resource is divided into multiple channels, and the UE measures one of the channels to determine whether the channel is idle. If idle, the D2D is established on the channel. connection.
  • the data transmission request of the base station to the D2D distributed network and the time-frequency domain resource for transmitting the channel measurement to the UE may be sent to the UE through the same signaling, or may be sent to the UE through different signaling.
  • the UE is not limited herein.
  • the base station in the process of establishing a D2D multi-hop connection by the UE, sends a data transmission request of the D2D distributed network to the UE to trigger the UE to perform channel measurement, and the base station sends the time-frequency domain resource for channel measurement to the UE.
  • the time-frequency domain resource is used to enable the UE to measure the channel where the time-frequency domain resource is located to determine whether the channel is idle. If idle, establish a D2D connection through the channel.
  • the invention proposes a resource allocation process based on a D2D distributed network, which can realize resource allocation in a D2D multi-hop data transmission scenario based on a D2D distributed network.
  • the frequency domain range actually includes a frequency domain range and a time domain range
  • the time domain range includes a measurement dedicated subframe, or a time interval of abnormal data transmission indicated by the parameter.
  • the base station sends the measurement random quantity B and the measurement duration T to the UE, and the measurement random quantity B and the measurement duration T are used to enable the UE to determine the measurement start time on the time-frequency domain resource, and Beginning at the beginning of time, the channel is measured over the measurement duration T to determine if the channel is idle.
  • the base station further sends the maximum number of relays of the D2D distributed network connection to the UE, where the maximum number of relays is used to limit the number of relays used by the UE to establish a D2D connection on the channel, which should be less than or equal to The maximum number of relays.
  • the base station sends the maximum number of connections of the D2D distributed network connection to the UE, where the maximum number of connections is used to enable the UE to establish a D2D on the channel when determining that the number of D2D connections of the UE is not greater than the maximum number of connections. connection.
  • the base station further sends a measurement result reporting parameter to the UE, to define a format in which the UE reports the measurement result to the base station.
  • the parameters of the measurement time-frequency domain resource, the measurement random number B, the measurement duration T, the maximum number of relays, and the maximum number of connections sent by the base station to the UE may be simultaneously sent to the UE in one signaling, or may be divided into different The signaling is sent, which is not limited herein.
  • the above is an introduction to the D2D communication method in the D2D distributed network.
  • the user equipment UE and the base station in the D2D communication are introduced from the perspective of the functional module entity.
  • a user equipment provided by an embodiment of the present invention includes:
  • the first obtaining module 1201 is configured to acquire a D2D distributed network data transmission request.
  • the second obtaining module 1202 is configured to acquire a time-frequency domain resource for performing channel measurement.
  • the measuring module 1203 is configured to: after the first obtaining module 1201 obtains the D2D distributed network data transmission request, perform measurement on one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle;
  • the connection establishing module 1204 is configured to establish a D2D connection on the channel when the channel is idle.
  • the second obtaining module 1202 acquires the time-frequency domain resource for performing channel measurement, and the measuring module 1203 then selects the channel where the time-frequency domain resource is located. A measurement is made to determine if the channel is idle, and if the channel is idle, the connection establishment module 1204 establishes a D2D connection over the channel.
  • the invention proposes a resource allocation process based on a D2D distributed network, which can realize resource allocation in a D2D multi-hop data transmission scenario based on a D2D distributed network.
  • the second acquisition module 1202 is specifically configured to obtain a frequency domain range and a time domain range for performing channel measurement; the time domain range includes a measurement-specific subframe specified by the base station; or, the time domain range includes a silent period of normal data transmission and reception learned according to the configuration of the base station.
  • an embodiment of the present invention provides a user equipment 13, which includes:
  • the first obtaining module 1301 is configured to acquire a D2D distributed network data transmission request.
  • the second obtaining module 1302 is configured to acquire a time-frequency domain resource for performing channel measurement.
  • the measuring module 1303 is configured to: after the first acquiring module 1301 obtains the D2D distributed network data transmission request, perform measurement on one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle;
  • the connection establishing module 1304 is configured to establish a D2D connection on the channel when the channel is idle.
  • the measurement module 1303 includes:
  • the calculating unit 13031 is configured to calculate a sum of powers of signals of different signal sources on the channel;
  • the first determining unit 13032 is configured to determine that the channel is an idle channel when the sum of the powers is less than a preset threshold.
  • the measuring module 1303 is specifically configured to determine that the channel is not idle when the UE detects a regular landmark signal on the channel.
  • the measurement module 1303 performs a preset threshold M measurement on the channel. If the results of the M measurements are all idle, the UE confirms that the channel is idle, and the M measurements are discontinuous measurement or continuity measurement.
  • the measurement module 1303 is further configured to jump to the next channel for measurement when the channel is not idle or to perform measurement on the channel again after the preset measurement avoidance time.
  • the measurement module 1303 determines whether the measurement channel is idle by calculating whether the sum of powers of different signals on the channel is less than a preset threshold, or determining whether the channel is idle by detecting whether the channel has a regular iconic signal, thereby Improve the achievability of the program.
  • a user equipment 14 includes:
  • the first obtaining module 1401 is configured to acquire a D2D distributed network data transmission request.
  • the second obtaining module 1402 is configured to acquire a time-frequency domain resource for performing channel measurement.
  • the measuring module 1403 is configured to: after the first obtaining module 1401 obtains the D2D distributed network data transmission request, perform measurement on one of the channels in which the time-frequency domain resource is located to determine whether the channel is idle;
  • the connection establishing module 1404 is configured to establish a D2D connection on the channel when the channel is idle.
  • the user equipment 14 further includes:
  • the processing module 1405 is configured to pre-empt the channel when the channel is idle, and the pre-occupied channel is a non-idle channel;
  • the connection establishing module 1404 is specifically configured to establish a D2D connection through the channel when a time point of establishing the D2D connection is reached.
  • the user equipment further includes:
  • a third obtaining module 1406, configured to acquire a measurement random quantity B and a measurement duration T;
  • the measurement module 1403 includes:
  • a second determining unit 14031 configured to determine, according to the measured random quantity B and the measurement duration T, a measurement start time of the UE;
  • the measuring unit 14032 is configured to measure the channel within the measurement duration T from the measurement start time to determine whether the channel is idle.
  • the third acquisition module 1406 obtains the measurement random quantity B and the measurement duration T to determine the measurement start time on the channel where the frequency domain resource is located during the channel measurement, so that the measurement access of each UE can be randomly staggered. Time, avoiding measurement conflicts in which multiple UEs simultaneously initiate measurement. And when the processing module 1405 discovers the idle channel, the channel is pre-occupied to prevent other UEs from occupying the channel, thereby avoiding resource allocation conflicts.
  • the user equipment further includes:
  • a fourth acquiring module configured to acquire a maximum number of relays of the D2D distributed network connection
  • the connection establishment module is specifically configured to establish a D2D connection on the channel, and the number of relays used by the D2D connection is less than or equal to the maximum number of relays.
  • the user equipment further includes:
  • a fifth obtaining module configured to obtain a maximum number of connections of the D2D distributed network connection
  • Connection establishment module including:
  • a determining unit configured to determine whether the number of D2D connections is greater than a maximum number of connections
  • the connecting unit is configured to determine, when the determining unit determines that the number of D2D connections is not greater than the maximum number of connections, establishing a D2D connection on the channel.
  • the base station in the embodiment of the present invention is described in detail below from the perspective of a modular functional entity.
  • a base station 15 provided in an embodiment of the present invention includes:
  • the first sending module 1501 is configured to initiate a data transmission request of the D2D distributed network to the UE;
  • the second sending module 1502 is configured to send, to the UE, a time-frequency domain resource for performing channel measurement, where the time-frequency domain resource is used to enable the UE to measure a channel where the time-frequency domain resource is located to determine whether the channel is idle, and if the channel is idle, pass The channel establishes a D2D connection.
  • the first sending module 1501 sends a data transmission request of the D2D distributed network to the UE by the base station to trigger the UE to perform channel measurement
  • the second sending module 1502 sends the UE to the UE.
  • transmitting a time-frequency domain resource for performing channel measurement where the time-frequency domain resource is used to enable the UE to measure the channel where the time-frequency domain resource is located to determine whether the channel is idle, and if idle, establish a D2D connection through the channel.
  • the invention proposes a resource allocation process based on a D2D distributed network, which can realize resource allocation in a D2D multi-hop data transmission scenario based on a D2D distributed network.
  • the first sending module 1502 is specifically configured to send, to the UE, a frequency domain range and a time domain range for performing channel measurement; the time domain range includes a measurement dedicated subframe, or is sent by abnormal data indicated by the parameter. time interval.
  • the base station further includes:
  • a third sending module configured to send a measurement random quantity B and a measurement duration T to the UE, where the measurement random quantity B and the measurement duration T are used to enable the UE to determine a measurement start time on the time-frequency domain resource, and from the measurement start time Initially, the channel is measured over the measurement duration T to determine if the channel is idle.
  • the base station further includes:
  • a fourth sending module configured to send, to the UE, a maximum number of relays of the D2D distributed network connection, where the maximum number of relays is used to limit the number of relays used by the UE to establish a D2D connection on the channel should be less than or equal to The maximum number of relays.
  • the base station further includes:
  • the fifth sending module is configured to send the maximum number of connections of the D2D distributed network connection to the UE, where the maximum number of connections is used to enable the UE to establish a D2D connection on the channel when determining that the number of D2D connections of the UE is not greater than the maximum number of connections.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • Including a number of instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

L'invention concerne un procédé de communication de dispositif à dispositif (D2D), un équipement utilisateur et une station de base destinés à être utilisés pour mettre en œuvre une attribution de ressource d'un réseau distribué D2D et une utilisation efficace d'un canal. Le procédé dans un mode de réalisation de la présente invention comprend les opérations suivantes : un équipement utilisateur (UE) acquiert une requête de transmission de données d'un réseau distribué D2D ; l'UE acquiert des ressources temps-fréquence pour exécuter une mesure de canal ; ensuite, l'UE mesure un canal dans lequel les ressources temps-fréquence sont situées pour déterminer si le canal est au repos ou non ; si le canal est au repos, l'UE établit une connexion D2D au moyen du canal. La présente invention fournit un processus d'attribution de ressource dans un réseau distribué D2D, et une attribution de ressource d'un scénario de transmission de données multi-saut D2D sur la base d'un réseau distribué D2D peut être mise en œuvre.
PCT/CN2015/093523 2015-08-31 2015-10-31 Procédé de communication de dispositif à dispositif (d2d), équipement utilisateur et station de base Ceased WO2017035940A1 (fr)

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Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
CN113381848A (zh) * 2016-02-05 2021-09-10 Oppo广东移动通信有限公司 端到端传输数据的方法、设备和系统
CN106131927B (zh) * 2016-06-27 2019-09-17 新华三技术有限公司 Mesh连接的建立方法及装置
JP6955880B2 (ja) * 2017-03-17 2021-10-27 株式会社東芝 無線通信システムおよび無線通信方法
CN108631971B (zh) * 2017-03-22 2021-05-11 华为技术有限公司 信息传输方法、装置及系统
WO2018209471A1 (fr) * 2017-05-15 2018-11-22 深圳市卓希科技有限公司 Procédé et dispositif d'attribution de ressources de communication
WO2018218544A1 (fr) * 2017-05-31 2018-12-06 华为技术有限公司 Procédé, dispositif et équipement de mesure de qualité de canal et support d'informations
FI3742842T3 (fi) 2018-02-14 2023-06-02 Guangdong Oppo Mobile Telecommunications Corp Ltd Indikaatio puuttuvasta synkronointisignaalilohkosta, ssb, joka liittyy jäljellä olevaan vähimmäisjärjestelmätietoon, rmsi, taajuusalueessa

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103634812A (zh) * 2013-11-27 2014-03-12 西安电子科技大学 一种基于用户设备中继同小区设备到设备直传通信的方法
CN104125620A (zh) * 2014-07-31 2014-10-29 宇龙计算机通信科技(深圳)有限公司 基于终端直连通信的中继选择的路由方法和路由方法
WO2015005714A1 (fr) * 2013-07-12 2015-01-15 Samsung Electronics Co., Ltd. Procédé et appareil pour découvrir un dispositif voisin dans un réseau de communication d2d
CN104429147A (zh) * 2012-08-03 2015-03-18 英特尔公司 高效率分布式设备对设备(d2d)信道接入

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009083927A1 (fr) * 2008-01-02 2009-07-09 Nxp B.V. Procédé et système pour un schéma de transmission de séquence d'intervalles de temps de pilote de liaison montante supplémentaire
KR20120009772A (ko) * 2010-07-21 2012-02-02 삼성전자주식회사 Ｍ２ｍ 통신 시스템에서의 간섭 완화를 위한 시그널링 방법 및 디바이스
CN103428712B (zh) * 2012-05-16 2016-08-10 华为技术有限公司 一种侦听方法和节点
CN104640145B (zh) * 2013-11-13 2018-02-23 普天信息技术有限公司 一种解决时频资源冲突的方法和系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104429147A (zh) * 2012-08-03 2015-03-18 英特尔公司 高效率分布式设备对设备(d2d)信道接入
WO2015005714A1 (fr) * 2013-07-12 2015-01-15 Samsung Electronics Co., Ltd. Procédé et appareil pour découvrir un dispositif voisin dans un réseau de communication d2d
CN103634812A (zh) * 2013-11-27 2014-03-12 西安电子科技大学 一种基于用户设备中继同小区设备到设备直传通信的方法
CN104125620A (zh) * 2014-07-31 2014-10-29 宇龙计算机通信科技(深圳)有限公司 基于终端直连通信的中继选择的路由方法和路由方法

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