WO2020093330A1 - Procédé, appareil et système de détermination de ressources spectrales - Google Patents

Procédé, appareil et système de détermination de ressources spectrales Download PDF

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Publication number
WO2020093330A1
WO2020093330A1 PCT/CN2018/114633 CN2018114633W WO2020093330A1 WO 2020093330 A1 WO2020093330 A1 WO 2020093330A1 CN 2018114633 W CN2018114633 W CN 2018114633W WO 2020093330 A1 WO2020093330 A1 WO 2020093330A1
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contention
identifier
channel
spectrum resource
information
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Chinese (zh)
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吕捷
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2018/114633 priority Critical patent/WO2020093330A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • This application relates to the field of communications, and in particular to a method, device, and system for determining spectrum resources.
  • Spectrum resources are divided into licensed spectrum and unlicensed spectrum.
  • the licensed spectrum is purchased by an operator and provides wireless services on that spectrum. Unlicensed spectrum does not need to be purchased. All devices that use this spectrum resource share spectrum resources according to certain rules. These spectrum resources are divided into a series of channels according to frequency, and these channels are shared and used by all devices.
  • the device can determine to occupy the channel by using a backoff mechanism, and then send data through the channel.
  • the process may be: the device monitors the channel, generates a random number when the channel is monitored to be idle, counts down based on the random number, and uses the channel to send data when the count reaches zero.
  • there may be multiple devices listening to the channel idle at the same time if each device immediately sends data on the channel when it detects that the channel is idle, a conflict occurs; if each device generates a random number and counts down based on the random number When the data is sent on the channel when it reaches 0, the collision can be reduced.
  • the device needs a longer time to count down, which reduces the quality of service (QoS) of the communication.
  • QoS quality of service
  • this application provides a method, device and system for determining spectrum resources.
  • the technical solution is as follows:
  • an embodiment of the present application provides a method for determining spectrum resources.
  • a first device sends contention information through a first spectrum resource during a contention period of a first data slot.
  • the first spectrum resource Is a part of the spectrum resources in the channel corresponding to the first device.
  • the first data slot includes a contention period and a data period that is located after the contention period.
  • the contention information is used to request occupation of spectrum resources in the channel; receiving at least one Contention feedback information sent by the second device, the contention feedback information indicating the device requesting to occupy the spectrum resource in the channel during the contention period; determining the second spectrum resource according to the contention feedback information, the second spectrum resource is in the data period
  • the internal first device can use the spectrum resources in the channel. In this way, the first device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication.
  • the competition feedback information includes a first identification set and / or a maximum value among values corresponding to each identification included in the first identification set, and the first identification set includes sending within the competition period The identification of each first device of the competition information.
  • the first device may determine the second spectrum resource based on the contention feedback information.
  • the second spectrum resource is determined according to the competition feedback information using preset rules.
  • the predetermined second spectrum resource can be used exclusively by the first device in the data period of the first data slot through preset provisions, so that there will be no other devices other than the first device and the first device in the data period There is conflict.
  • acquiring target identification information where the target identification information includes the identification of the first device and / or the identification of the first data slot; based on the competition feedback information and the target identification information, a The set rule determines the second spectrum resource.
  • the first device determines the second spectrum resource uniquely occupied by the first device according to the competition feedback information and the target identification information.
  • the first device monitors the channel during the contention period of the second data slot, and when it is detected that no device is competing to use the channel, the backoff period is based on the backoff within the data period of the second data slot
  • the mechanism uses the channel or part of the spectrum resources in the channel.
  • the identifier of the first device is the device identifier of the first device or the network identifier of the network where the first device is located.
  • the competition information sent by the first device includes a codeword of the first device.
  • the codeword of the first device can be used to facilitate the second device to distinguish the first device.
  • the first device receives synchronization information broadcast by at least one third device from the channel in the beacon time slot of the beacon, and the synchronization information of the third device includes the identifier of the third device and the third device
  • the identification of the target time slot in the, the target time slot is the Beacon time slot or a data time slot located after the Beacon time slot; select one device from the first device and the at least one third device As a reference device; when the reference device is not the first device, set the identifier of the target time slot in the first device to be the same as the identifier of the target time slot in the reference device, and / or
  • the synchronization information sent by the reference device compensates the carrier frequency offset CFO of the first device.
  • time slot synchronization and / or CFO synchronization based on the reference device are realized.
  • the first device monitors the identifiers of the third devices competing to occupy the channel spectrum resources on the channel to obtain a second identifier set; select an idle identifier according to the second identifier set, and The idle identifier is set as the identifier of the first device. In this way, the first device can automatically configure the device identification for itself.
  • the first device detects whether there is a third device with the same identifier as the first device, and if it is detected that the third device is present, then reselects an idle identifier according to the second set of identifiers , Setting the reselected idle identifier as the identifier of the first device. In this way, the first device can automatically detect whether the selected identifier conflicts with the third device that has access to the channel, and re-select the identifier for itself when the conflict occurs.
  • the present application provides a method for determining spectrum resources, in which the second device receives contention information sent by the first device from the channel during the contention period of the first data slot, the first A data slot includes a contention period and a data period after the contention period.
  • the contention information of the first device is used by the first device to request to occupy spectrum resources in the channel; a contention is generated according to the received contention information Feedback information, the contention feedback information indicates a device requesting to occupy spectrum resources in the channel during the contention period; sending the contention feedback information, the contention feedback information is used by the first device to determine the second spectrum Resources, the second spectrum resource is a spectrum resource in the channel available to the first device during the data period.
  • the contention feedback information indicates a device that requests to occupy the channel during the contention period, so that the first device can determine the second spectrum resource according to the contention feedback information.
  • the first device directly uses the second spectrum resource to send or receive data, which improves the QoS of communication.
  • the competition feedback information includes a first identification set and / or a maximum value among values corresponding to each identification included in the first identification set, and the first identification set includes sending within the competition period The identity of the first device to compete for information,
  • the second device determines the first spectrum resource that receives the competition information sent by the first device, obtains the identifier of the first device corresponding to the first spectrum resource, or obtains the first spectrum resource and the The identifier of the first device corresponding to the codeword of the first device included in the competition information; combining the acquired identifiers of the first devices into a first identifier set, or, from the acquired Select the largest value among the values corresponding to the identification of a device.
  • the first device may determine the second spectrum resource based on the first identification set and / or the maximum value in the first identification set.
  • the present application provides a method for determining spectrum resources, in which the first device receives first synchronization information broadcast by at least one third device from a channel in a first beacon Beacon time slot,
  • the first synchronization information of the third device includes the identifier of the third device;
  • the second spectrum resource is determined according to the first identifier set in the first data slot, when the first Beacon slot is earlier than the first data Slot, the second spectrum resource is the spectrum resource in the channel that the first device can use in the first data slot, and the first set of identifiers includes the identifier of each third device and the The identification of the first device.
  • the first device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication.
  • the first device broadcasts second synchronization information through the channel in the first Beacon time slot, and the second synchronization information includes an identifier of the first device or a first identifier set.
  • the first device monitors the identifiers of the third devices requesting to occupy the spectrum resources of the channel in the second data slot to obtain a third set of identifiers, and the second data slot is located in the first Between a Beacon time slot and the first data time slot; the first device acquires an identifier that does not exist in the first identifier set from the third identifier set, and adds the acquired identifier to all The first identification set is described. In this way, as many devices sharing the channel as possible can be monitored.
  • the first synchronization information of the third device further includes an identifier of a target time slot in the third device, the target time slot is the first Beacon time slot or is located after the first Beacon time slot Of data slots;
  • the first device selects one device from the first device and the at least one third device as a reference device; sets the identification of the target time slot in the first device and the target time slot in the reference device Is the same, and / or, the carrier frequency offset CFO of the first device is compensated according to the first synchronization information of the reference device.
  • time slot synchronization and / or CFO synchronization based on the reference device is realized.
  • the first device monitors the identifiers of the third devices competing to occupy the channel spectrum resources on the channel to obtain a second identifier set; select an idle identifier according to the second identifier set, and The idle identifier is set as the identifier of the first device. In this way, the first device can automatically configure the device identification for itself.
  • the first device detects whether there is a third device with the same identifier as the first device, and if it is detected that the third device is present, then reselects an idle identifier according to the second set of identifiers , Setting the reselected idle identifier as the identifier of the first device. In this way, the first device can automatically detect whether the selected identifier conflicts with the third device that has access to the channel, and re-select the identifier for itself when the conflict occurs.
  • the first data slot is a contention-free shared slot.
  • an embodiment of the present application provides an apparatus for determining spectrum resources, which is used to execute the method in the first aspect or any optional implementation manner of the first aspect.
  • the apparatus includes a unit for performing the method of the first aspect or any optional implementation manner of the first aspect.
  • an embodiment of the present application provides an apparatus for determining spectrum resources, which is used to execute the method in the second aspect or any optional implementation manner of the second aspect.
  • the device includes a unit for performing the method of the second aspect or any optional implementation manner of the second aspect.
  • an embodiment of the present application provides an apparatus for determining spectrum resources, which is used to execute the method in the third aspect or any optional implementation manner of the third aspect.
  • the device includes a unit for performing the method of the third aspect or any optional implementation manner of the third aspect.
  • an embodiment of the present application provides an apparatus for determining spectrum resources.
  • the apparatus includes: at least one processor, at least one memory, and at least one transceiver.
  • the at least one processor communicates with the at least one through a bus.
  • the memory is connected to at least one transceiver; the at least one memory stores one or more programs, the one or more programs are configured to be executed by the at least one processor, the one or more programs include Instructions to execute the method of the first aspect or any possible implementation of the first aspect.
  • an embodiment of the present application provides an apparatus for determining spectrum resources.
  • the apparatus includes: at least one processor, at least one memory, and at least one transceiver.
  • the at least one processor communicates with the at least one through a bus.
  • the memory is connected to at least one transceiver; the at least one memory stores one or more programs, the one or more programs are configured to be executed by the at least one processor, the one or more programs include Instructions to execute the method of the second aspect or any possible implementation of the second aspect.
  • an embodiment of the present application provides an apparatus for determining spectrum resources.
  • the apparatus includes: at least one processor, at least one memory, and at least one transceiver.
  • the at least one processor communicates with the at least one through a bus.
  • the memory is connected to at least one transceiver; the at least one memory stores one or more programs, the one or more programs are configured to be executed by the at least one processor, the one or more programs include Instructions to execute the method of the third aspect or any possible implementation manner of the third aspect.
  • the present application provides a computer-readable storage medium having instructions stored therein, which when executed on a computer, causes the computer to perform the above-mentioned first aspect, second aspect, third aspect, A method of any optional implementation manner of the first aspect, any optional implementation manner of the second aspect, or any optional implementation manner of the third aspect.
  • the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform any optional implementation of the first aspect, the second aspect, the third aspect, and the first aspect Method, any optional implementation manner of the second aspect, or any optional implementation manner of the third aspect.
  • the present application provides a system for determining a spectrum resource, the system including the device according to the fourth or seventh aspect and the device according to the fifth or eighth aspect.
  • FIG. 1A is a schematic structural diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 1B is a schematic structural diagram of another network architecture provided by an embodiment of the present application.
  • 1C is a schematic structural diagram of a data slot provided by an embodiment of the present application.
  • 1D is a schematic structural diagram of a data slot and a Beacon slot provided by an embodiment of the present application
  • 1E is a schematic diagram of another network architecture structure provided by an embodiment of the present application.
  • 2A is a flowchart of a method for determining spectrum resources provided by an embodiment of the present application
  • 2B is a schematic diagram of a multiple network provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of another method for determining spectrum resources provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an apparatus for determining spectrum resources provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another apparatus for determining spectrum resources provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another apparatus for determining spectrum resources provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another apparatus for determining spectrum resources according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another apparatus for determining spectrum resources provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another apparatus for determining spectrum resources according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a system for determining spectrum resources provided by an embodiment of the present application.
  • an embodiment of the present application provides a network architecture, including:
  • At least one channel 1 and multiple devices 2 the multiple devices 2 sharing each of the at least one channel 1.
  • each device 2 accesses the channel 1.
  • each device 2 accesses one of the channels 1, and also accesses the other channel 1.
  • the time resource is divided into multiple consecutive data slots, and the time length of each data slot may be equal.
  • Each data slot includes a contention period and a data period after the contention period. There may be no interval between the contention period and the data period, or there may be a period of time between the contention period and the data period.
  • the time resource further includes a beacon (Beacon) time slot, and one or more data time slots may be spaced between two adjacent Beacon time slots.
  • Beacon Beacon
  • the multiple devices 2 may include multiple first devices 21 and at least one second device 22.
  • the first device 21 may send contention information through the first spectrum resource during the contention period of the data slot.
  • the first spectrum resource is the channel with the first device
  • the corresponding part of the spectrum resources is identified, and the contention information is used by the first device to request to occupy the spectrum resources in the channel.
  • the second device 22 receives the competition information from the channel, and generates competition feedback information according to the received competition information.
  • the competition feedback information includes the first set of identifiers and / or
  • the first identification set includes the largest value among the values corresponding to each identification.
  • the first identification set includes the identification of the first device 21 that sent the competition information during the contention period of the data slot, and sends the competition feedback information.
  • the first device 21 can determine the second spectrum resource according to the contention feedback information, and the second spectrum resource is a spectrum resource in a channel that can be used by the first device 21 in the data period of the data slot.
  • the first spectrum resource may include one or more subcarriers in the channel.
  • the network architecture may not require a second device, so for any device 2 in the network architecture, for convenience of description, the device 2 is referred to as a first device, and the first device is in a Beacon time slot Receiving at least one first synchronization information broadcast by the third device from the channel, the first synchronization information of the third device includes the identifier of the third device, and the third device may be other devices than the first device in the network architecture;
  • the first device determines the second spectrum resource according to the first set of identifiers in the data slot after the Beacon slot.
  • the second spectrum resource is the spectrum resource in the channel available to the first device in the data slot.
  • the first The identification set includes the identification of each third device and the identification of the first device.
  • an embodiment of the present application provides a method for determining spectrum resources.
  • the method can be applied to the network architecture described in any of the foregoing embodiments of FIGS. 1A, 1B, and 1E, including:
  • Step 201 The first device sends contention information through the first spectrum resource during the contention period of the first data slot.
  • the first spectrum resource is a part of the spectrum resource corresponding to the first device in the channel.
  • the first data slot includes The contention period and the data period after the contention period, the contention information is used to request to occupy spectrum resources in the channel.
  • the number of devices corresponding to the first spectrum resource is greater than or equal to 1, when the number of devices corresponding to the first spectrum resource is 1, the device corresponding to the first spectrum resource includes only the first device, the first spectrum
  • the resources correspond one-to-one with the identification of the first device.
  • the device corresponding to the first spectrum resource includes other devices in addition to the first device.
  • each device corresponding to the first spectrum resource uses a codeword to perform Differentiate, the codeword of each device is different, that is to say the first device corresponds to the first spectrum resource and the codeword of the first device, and the identifier of the first device corresponds to the first spectrum resource and the codeword of the first device .
  • the contention information sent by the first device may also include the codeword of the first device.
  • the first spectrum resource includes one or more subcarriers in the channel.
  • the multiple subcarriers may be multiple subcarriers with continuous positions, or multiple subcarriers with discontinuous positions.
  • the identification of the devices in the network architecture shown in FIGS. 1A, 1B, and 1E may be sequential numbers starting from 1.
  • the identifiers of the five devices may be 1, 2, 3, 4, or 5, respectively.
  • the channel may be an authorized channel or an unauthorized channel.
  • the channel includes multiple spectrum resources, and the identification of one or more devices corresponding to each spectrum resource can be defined in advance in each device in the network architecture; or, each device in the network architecture can be determined using the same strategy.
  • the identifiers of one or more devices corresponding to each spectrum resource, and each device determines that the identifiers of the devices corresponding to one spectrum resource are the same.
  • the spectrum resource includes one subcarrier
  • the channel includes 256 subcarriers, that is, the channel includes 256 spectrum resources.
  • Each device in the network architecture may determine that the identifier of the device corresponding to the first spectrum resource may be 1, 257 and 513, determine that the identifier of the device corresponding to the second spectrum resource may be 2, 258 and 514, and determine the third The identifiers of the devices corresponding to the spectrum resources are 3, 259 and 515,...
  • Each part of the spectrum resources in the channel corresponds to the identification of one or more devices.
  • each of the multiple devices also includes a codeword, and the codewords in different devices are different.
  • the identification may be manually configured for each device, or a server may be deployed, and each device may request the server to configure the identification for the device before accessing the channel.
  • the device identification may be the device identification of the device or the network identification of the network where the device is located.
  • the device identification when the device identification is the network identification of the network where the device is located, the device may be an access point (AP) or base station (NodeB) in the network. There may be one or more devices in the network sharing one or more channels.
  • AP access point
  • NodeB base station
  • the first device may also configure the identifier for the device by other methods. For example, when the first device accesses the channel, it can configure an identifier for it through the following operations from 2011 to 2013. The operations from 2011 to 2013 are:
  • the first device monitors the channel, and obtains a second set of identifiers when the identifiers of the third devices accessing the channel are monitored.
  • the third device is a device that has accessed the channel before the first device accesses the channel.
  • the first device may obtain the second identification set in the following two ways, respectively:
  • each third device that has accessed the channel broadcasts a first synchronization message on the channel, and the first synchronization message broadcast by the third device includes the identity of the third device.
  • the first device receives the first synchronization message sent by each third device from the channel, obtains the identifier of each third device from each received first synchronization message, and obtains a second set of identifiers.
  • the Beacon time slot may be located before the first data time slot.
  • the first synchronization message broadcast by the third device may also include the identifier of the target time slot in the third device, the target time slot may be the Beacon time slot, or the target time slot is one after the Beacon time slot Data slot.
  • the identifier of the target time slot may be the sequence number of the target time slot.
  • the third device may set the sequence number of the first time slot to 1, the sequence number of the second time slot to 2, and the sequence number of the third time slot to 3.
  • the first device may also select one device from the first device and at least one third device as the reference device; set the identifier of the target time slot in the first device to be the same as the identifier of the target time slot in the reference device, And / or, compensate the carrier frequency offset (Carrier Frequency Offset, CFO) of the first device according to the first synchronization information of the reference device.
  • the carrier frequency offset Carrier Frequency Offset, CFO
  • the first device may select the device with the earliest access network or the device with the strongest signal strength as the reference device.
  • the first device can monitor the channel during the contention period of the data slot, obtain the identification of the device that sent the competition information on the channel, and obtain the second identification set.
  • the first device may also monitor the channel during the contention period of the other data slot to obtain the identification of the device that sent the competition information on the channel.
  • the identification of the device is added to the second identification set.
  • the first device selects an idle identifier according to the second identifier set, and sets the idle identifier as the identifier of the first device.
  • the first device can determine which device identifiers are idle identifiers according to the second identifier set. For example, assuming that the second identifier set includes identifiers 1, 2, 5, and 7, the first device may determine that the idle identifier includes identifiers 3, 4, 6, 8, 9, ... according to the second identifier set.
  • the first device detects whether there is a third device with the same identifier as the first device, and if a third device is detected, reselects an idle identifier according to the second identifier set, and sets the reselected idle identifier It is the identification of the first device.
  • the first device may broadcast a first synchronization message including the identification of the first device on the channel. If the identity of a third device is the same as the identity of the first device, the third device may send a conflict message to the first device, the first device receives the conflict message, and determines that there is a third device with the same identity as the first device. Three devices, reselect an idle identifier according to the second identifier set, and set the reselected idle identifier as the identifier of the first device. After the first device resets the identification, it can also detect whether there is a third device with the same identification as the first device in the above manner.
  • the first device can also monitor the channel during the contention period of the data slot to obtain the identification of the device that sent the competition information on the channel, if there is a certain identification and the identification of the first device in the identification of the monitored device If it is the same, it is determined that there is a third device with the same identifier as the first device, and a free identifier is reselected according to the second set of identifiers, and the reselected idle identifier is set as the identifier of the first device. After the first device resets the identification, it can also detect whether there is a third device with the same identification as the first device by monitoring the channel during the contention period.
  • Step 202 The second device receives contention information sent by the first device from the channel during the contention period of the first data slot, and generates contention feedback information according to the received contention information, the contention feedback information indicating contention in the first data slot The device requesting to occupy the channel during the period.
  • the number of the second devices may be multiple, and each second device in the plurality of second devices may monitor the channel, and when it detects that there is competition information sent by the first device on the channel, the device may receive the second device.
  • Competitive information may be provided.
  • the contention feedback information may include a first identification set and / or a maximum value among values corresponding to each identification included in the first identification set, and the first identification set includes sending during a contention period of the first data slot The identity of the first device to compete for information.
  • the device identifier is a numeric value
  • the value corresponding to the identifier is essentially the identifier itself.
  • the second device may determine the first spectrum resource that receives the competition information sent by the first device, and obtain the identity of the first device corresponding to the first spectrum resource; or, include the first device in the competition information
  • the second device may determine the first spectrum resource that receives the competition information sent by the first device, and obtain the identity of the first device corresponding to the first spectrum resource; or, include the first device in the competition information
  • the codeword of the first device corresponding to the first spectrum resource and the codeword of the first device
  • acquiring the identifiers of the first devices to form a first set of identifiers, or, from the acquired first
  • the largest value is selected from the values corresponding to the device identification, thereby obtaining competition feedback information.
  • each second device may generate competition feedback information, and the competition feedback information generated by each second device may be the same.
  • Step 203 The second device sends the competition feedback information.
  • each second device in the multiple second devices may send the contention feedback information.
  • Step 204 The first device receives the contention feedback information, and determines the second spectrum resource according to the contention feedback information.
  • the second spectrum resource is the spectrum resource in the channel that the first device can use during the data period of the first data slot.
  • the first device may use a preset rule to determine the second spectrum resource according to the contention feedback information, and the second spectrum resource may be used exclusively by the first device within the data period of the first data slot.
  • the first device may determine the second spectrum resource using preset rules according to contention feedback information sent by any second device.
  • the first device determines the second spectrum resource.
  • the following two examples of using preset rules to determine the second spectrum resource are listed. The two examples are:
  • the first device obtains the identifier of the first data slot and the identifier of the first device, and determines the second spectrum resource according to the competition feedback information, the identifier of the first device, and the identifier of the first data slot.
  • the second spectrum resource may be the entire channel.
  • the first device may obtain the first identification set and the maximum value among the values corresponding to each identification included in the first identification set from the contention feedback information, and use the maximum value to calculate the modulo of the identification of the first data slot
  • For the numerical value select the one with the smallest difference from the modulus value from the first identification set; if the selected identification includes two, you can select the smallest identification or the largest identification from the two identifications;
  • the second spectrum resource is determined to be the channel, that is, the first device can send data through the channel during the data period of the first data slot.
  • the first device obtains the first set of identifiers from the contention feedback information including the identifiers 1, 3, and 5, and obtains the maximum value 5 in the first set of identifiers, and obtains the ID of the first data slot as 202.
  • the selected identifier 1 is the identifier of the first device
  • the second spectrum resource determined by the first device is the channel.
  • the first device obtains the identifier of the first device, and determines the second spectrum resource according to the contention feedback information and the identifier of the first device.
  • the second spectrum resource may be a part of the spectrum resource in the channel.
  • the first device may use the second spectrum resource to send or receive data within the data period of the first data slot.
  • the first device when the identifier of the first device is a network identifier, the first device first triggers the terminal accessing the first device to receive or send data within the data period of the first data slot, and then uses the second spectrum resource Send data to the terminal or receive data sent by the terminal.
  • the first device may also determine the spectrum resource in other ways.
  • the first device determines the spectrum resource by monitoring the channel.
  • the first device monitors the channel during the contention period of the second data slot, and when it is detected that no device is competing to use the channel, the second data
  • the data channel of the time slot uses the channel or part of the spectrum resources in the channel according to the backoff mechanism.
  • the so-called backoff mechanism may be: the first device generates a random number within the data period of the second data slot, counts down based on the random data, and uses the channel or the channel when the count value reaches a preset value Part of the spectrum resources.
  • the second data slot may be any data slot other than the first data slot, or any data slot.
  • the first device may determine the spectrum resource according to the above steps 201 to 205, or determine the spectrum resource by monitoring the channel.
  • the preset value may be a value such as 0 or 1.
  • the first device may request to occupy spectrum resources on multiple channels at the same time, and request to occupy spectrum resources according to the steps 201 to 204 described above on each channel.
  • the first device sends contention information through the first spectrum resource corresponding to its identifier in the channel, so that the second device receives contention information from the channel, and Generate competition feedback information based on the received competition information.
  • the competition feedback information may be a first identifier set including identifiers of the first devices competing to occupy the channel and / or a value corresponding to each identifier included in the first identifier set. The maximum value.
  • the first device receives contention feedback information sent by at least one second device, and determines a second spectrum resource according to the contention feedback information.
  • the second spectrum resource is a spectrum resource in the channel that the first device can use during the data period.
  • the first device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication. Since the second spectrum resource determined by the first device according to the contention feedback information can be exclusively occupied by the first device, no device other than the first device will conflict with the first device during the data period.
  • an embodiment of the present application provides a method for determining a spectrum resource.
  • the method can be applied to the network architecture described in any of the foregoing embodiments of FIGS. 1A, 1B, and 1E, including:
  • Step 301 The first device receives the first synchronization information broadcast by at least one third device from the channel in the first Beacon time slot, and the first synchronization information of the third device includes the identifier of the third device.
  • the at least one third device is a device in the network architecture other than the first device that shares the channel.
  • each third device that has accessed the channel broadcasts a first synchronization message on the channel, and the first synchronization message broadcast by the third device includes the identity of the third device.
  • the first synchronization message broadcast by the third device may also include the identifier of the target time slot in the third device.
  • the target time slot may be the first Beacon time slot, or the target time slot may be the first Beacon time slot The next data slot.
  • the identifier of the target time slot may be the sequence number of the target time slot.
  • the third device may set the sequence number of the first time slot to 1, the sequence number of the second time slot to 2, and the sequence number of the third time slot to 3.
  • the first device receives the first synchronization message sent by each third device from the channel, obtains the identifier of each third device from each received first synchronization message, and obtains the first set of identifiers.
  • the first device may broadcast the first synchronization information through the channel in the first Beacon time slot, and the first synchronization information includes the identifier of the first device or the first identifier set.
  • the first device may also monitor the identifiers of the third devices requesting to occupy the spectrum resources of the channel in the second data slot to obtain a third set of identifiers, and the second data slot is located after the first Beacon slot ; Obtain an identifier that does not exist in the first identifier set from the third identifier set, and add the acquired identifier to the first identifier set.
  • the channel may be an authorized channel or an unauthorized channel.
  • Step 302 The first device determines the second spectrum resource according to the first set of identifiers in the first data slot.
  • the first Beacon slot is earlier than the first data slot, and the second spectrum resource is in the first data slot.
  • a device may use the spectrum resources in the channel, and the first set of identifiers includes the identifier of each third device and the identifier of the first device.
  • the first data slot may be a contention-free slot.
  • One or more other time slots may be spaced between two adjacent contention-free time slots.
  • the second data slot may be earlier than the first data slot.
  • the first device may use a preset rule to determine the second spectrum resource according to the first identifier set, and the second spectrum resource may be used exclusively by the first device within the data period of the first data slot .
  • the following two examples of using preset rules to determine the second spectrum resource are listed. The two examples are:
  • the first device obtains the identifier of the first data slot and the identifier of the first device, and determines the second spectrum resource according to the first identifier set, the identifier of the first device, and the identifier of the first data slot.
  • the second spectrum resource may be the entire channel.
  • the first device may obtain the largest value among the values corresponding to each identifier included in the first identifier set, use the maximum value to calculate the modulus value of the identifier of the first data slot, and select one from the first identifier set The mark with the smallest difference from the modulus value; if the selected mark includes two, the smallest mark or the largest mark can be selected from the two marks; after selecting a mark, if the selected one Same as the identifier of the first device, it is determined that the second spectrum resource is the channel, that is, the first device can send data through the channel during the data period of the first data slot.
  • the first device obtains the maximum value 5 in the first identification set, obtains the ID of the first data slot as 202, and uses the maximum value to calculate the
  • the first device obtains the identifier of the first device, and determines the second spectrum resource according to the first identifier set and the identifier of the first device.
  • the second spectrum resource may be a part of the spectrum resource in the channel.
  • the first device may obtain the identifier of the first device, count the number M of identifiers in the first identifier set, sort the identifiers in the first identifier set, and determine the sequence number i where the identifier of the first device is located; determine
  • the first device may use the second spectrum resource to send or receive data within the data period of the first data slot.
  • the identifier of the first device may be the device identifier of the first device, or may be the network identifier of the network where the first device is located.
  • the first device first triggers the terminal accessing the first device to receive or send data within the data period of the first data slot, and then uses the second spectrum resource Send data to the terminal or receive data sent by the terminal.
  • the first device may also select one device from the first device and at least one third device as the reference device; set the identifier of the target time slot in the first device to be the same as the identifier of the target time slot in the reference device, And / or, compensate the CFO of the first device according to the first synchronization information of the reference device.
  • the first device may select the device with the earliest access network or the device with the strongest signal strength as the reference device.
  • the identification may be manually configured for each device, or a server may be deployed, and each device may request before accessing the channel The server configures its identity.
  • the device identification may be the device identification of the device or the network identification of the network where the device is located.
  • the first device may also configure the identifier for the device by other methods.
  • the first device accesses the channel, it can configure its identity through the following operations from 2011 to 2013, and the detailed implementation process will not be described here.
  • the first device receives the first synchronization information broadcast by at least one third device from the channel in the first Beacon time slot, and the first synchronization information of the third device includes the identifier of the third device, thereby obtaining A first identification set, the first identification set includes the identification of each third device and the identification of the first device; the second spectrum resource is determined according to the first identification set in the first data slot, and the first Beacon slot is early In the first data slot, the second spectrum resource is the spectrum resource in the channel that the first device can use in the first data slot. In this way, the first device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication. Since the second spectrum resource determined by the first device according to the contention feedback information can be exclusively occupied by the first device, no device other than the first device will conflict with the first device during the data period.
  • an embodiment of the present application provides an apparatus 400 for determining spectrum resources.
  • the apparatus 400 may be in the first device of any of the foregoing embodiments, including:
  • the sending unit 401 is configured to send contention information through the first spectrum resource during the contention period of the first data slot.
  • the first spectrum resource is a part of the spectrum resource corresponding to the device 400 in the channel.
  • the first data slot includes A contention period and a data period located after the contention period, the contention information is used to request to occupy spectrum resources in the channel;
  • the receiving unit 402 is configured to receive contention feedback information sent by at least one second device, where the contention feedback information indicates a device that requests to occupy spectrum resources in the channel during the contention period;
  • the processing unit 403 is configured to determine a second spectrum resource according to the contention feedback information.
  • the second spectrum resource is a spectrum resource that the device 400 can use in the channel during the data period.
  • the competition feedback information includes the first identifier set and / or the largest value among the values corresponding to each identifier included in the first identifier set, and the first identifier set includes each device that sends competition information during the competition period Logo.
  • processing unit 403 is used to:
  • the second spectrum resource is determined according to the competition feedback information using preset rules.
  • processing unit 403 is used to:
  • target identification information includes the identification of the device 400 and / or the identification of the first data slot;
  • the second spectrum resource is determined using preset rules.
  • processing unit 403 is also used for:
  • the channel is monitored during the contention period of the second data slot, and when it is detected that no device is competing to use the channel, the channel or part of the spectrum in the channel is used according to the backoff mechanism during the data period of the second data slot Resources.
  • the identifier of the device 400 is the device identifier of the device 400 or the network identifier of the network where the device 400 is located.
  • the contention information sent by the sending unit 401 includes a codeword, and the device 400 corresponds to the codeword and the first spectrum resource.
  • the receiving unit 402 is further configured to receive synchronization information broadcast by at least one third device from the channel in the Beacon time slot of the beacon.
  • the synchronization information of the third device includes the identifier of the third device and the third device The identification of the target time slot, the target time slot is the Beacon time slot or the data time slot after the Beacon time slot;
  • the processing unit 403 is also used to select one device from the device 400 and at least one third device as the reference device; when the reference device is not the device 400, set the identification of the target time slot in the device 400 and the reference device The identification of the target time slot is the same, and / or, the carrier frequency offset CFO of the apparatus 400 is compensated according to the synchronization information sent by the reference device.
  • processing unit 403 is also used for:
  • processing unit 403 is also used for:
  • the sending unit sends contention information through the first spectrum resource corresponding to the identifier of the device in the channel during the contention period of the first data slot, so that the second device receives contention information from the channel And generate competition feedback information based on the received competition information.
  • the competition feedback information may be a first identifier set including identifiers of first devices competing to occupy the channel and / or a value corresponding to each identifier included in the first identifier set The largest value in.
  • the receiving unit receives contention feedback information sent by at least one second device, and the processing unit determines the second spectrum resource according to the contention feedback information.
  • the second spectrum resource is the spectrum resource in the channel that the device can use during the data period.
  • the device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication. Since the second spectrum resource determined by the processing unit according to the contention feedback information can be exclusively occupied by the device, no other device other than the device will conflict with the device during the data period.
  • an embodiment of the present application provides an apparatus 500 for determining spectrum resources.
  • the apparatus 500 may be deployed on the second device in any of the foregoing embodiments, including:
  • the receiving unit 501 is configured to receive contention information sent by the first device from the channel during a contention period of the first data slot.
  • the first data slot includes a contention period and a data period that is located after the contention period.
  • the contention information is used by the first device to request to occupy spectrum resources in the channel;
  • the processing unit 502 is configured to generate competition feedback information according to the received competition information, and the competition feedback information indicates a device that requests to occupy spectrum resources in the channel during the competition period;
  • the sending unit 503 is used to send the contention feedback information, and the contention feedback information is used by the first device to determine the second spectrum resource, and the second spectrum resource is a spectrum resource in the channel that can be used by the first device during the data period.
  • the competition feedback information includes the first identifier set and / or the largest value among the values corresponding to each identifier included in the first identifier set, and the first identifier set includes the first device that sends the competition information during the competition period 'S logo,
  • the processing unit 502 is used to:
  • the acquired identifiers of the first devices are combined to form a first identifier set, or a maximum value is selected from the acquired values corresponding to the identifiers of the first devices.
  • the receiving unit receives the contention information sent by the first device from the channel during the contention period of the first data slot, and the processing unit generates contention feedback information according to the received contention information, because the contention feedback information indicates that The device requesting to occupy the spectrum resource in the channel during the contention period; in this way, the sending unit sends the contention feedback information to the first device, and the first device may determine the second spectrum resource based on the contention feedback information, and the data in the first data slot During the period, the first device directly uses the second spectrum resource to send or receive data, which improves the QoS of communication.
  • an embodiment of the present application provides an apparatus 600 for determining spectrum resources.
  • the apparatus 600 may be deployed in the second device in any of the foregoing embodiments, including:
  • the receiving unit 601 is configured to receive first synchronization information broadcast by at least one third device from a channel in a first beacon Beacon time slot, and the first synchronization information of the third device includes an identifier of the third device;
  • the processing unit 602 is configured to determine the second spectrum resource according to the first identifier set in the first data slot, the first Beacon slot is earlier than the first data slot, and the second spectrum resource is in the first data slot
  • the apparatus 600 may use the spectrum resources in the channel, and the first identification set includes the identification of each third device and the identification of the first device.
  • the device 600 further includes:
  • the sending unit is configured to broadcast second synchronization information through the channel in the first Beacon time slot, and the second synchronization information includes the identifier of the device 600 or the first identifier set.
  • the processing unit 602 is further configured to monitor the identifiers of the third devices requesting to occupy the spectrum resources of the channel in the second data slot to obtain a third set of identifiers, when the second data slot is located in the first Beacon Between the slot and the first data time slot; acquiring an identifier that does not exist in the first identifier set from the third identifier set, and adding the acquired identifier to the first identifier set.
  • the first synchronization information of the third device further includes an identifier of a target time slot in the third device, the target time slot is the first Beacon time slot or a data time slot that is located after the first Beacon time slot;
  • the processing unit 602 is further configured to select one device from the apparatus 600 and at least one third device as a reference device; set the identifier of the target time slot in the device 600 to be the same as the identifier of the target time slot in the reference device, and / or Or, compensate the carrier frequency offset CFO of the apparatus 600 according to the first synchronization information of the reference device.
  • the processing unit 602 is also used to monitor the identifiers of the third devices competing to occupy the channel's spectrum resources on the channel to obtain a second identifier set; select an idle identifier according to the second identifier set, and then select the idle identifier
  • the logo is set to the logo of the device 600.
  • the processing unit 602 is also used to detect whether there is a third device with the same identifier as that of the apparatus 600. If a third device is detected, then re-select an idle identifier according to the second identifier set, and then reselect Is set to the ID of the device 600.
  • the first data slot is a contention-free shared slot.
  • the receiving unit receives the first synchronization information broadcast by at least one third device from the channel in the first Beacon time slot, and the first synchronization information of the third device includes the identifier of the third device, thereby obtaining the first An identifier set, the first identifier set includes the identifier of each third device and the identifier of the device; the processing unit determines the second spectrum resource according to the first identifier set in the first data slot, the first Beacon slot is earlier than the first One data slot, the second spectrum resource is the spectrum resource in the channel that the device can use in the first data slot. In this way, the device directly uses the second spectrum resource to send or receive data during the data period of the first data slot, which improves the QoS of communication.
  • FIG. 7 is a schematic diagram of an apparatus 700 for determining a spectrum resource provided by an embodiment of this application.
  • the device 700 includes at least one processor 701, a bus system 702, a memory 703, and at least one transceiver 704.
  • the device 700 is a device with a hardware structure, and can be used to implement functional modules in the device described in FIG. 4.
  • the processing unit 403 in the apparatus 400 shown in FIG. 4 may be implemented by the at least one processor 701 calling code in the memory 703, and the sending unit 401 in the apparatus 400 shown in FIG. 4 and
  • the receiving unit 402 can be implemented by the transceiver 704.
  • the apparatus 700 may also be used to implement the functions of the sending end in any of the above embodiments.
  • the processor 701 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more used to control the An integrated circuit for application program execution.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the above bus system 702 may include a path to transfer information between the above components.
  • the above transceiver 704 is used to communicate with other devices or communication networks.
  • the above memory 703 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM), or other devices that can store information and instructions
  • Type of dynamic storage device can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), read-only compact disc (compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc Storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can be used by Any other media accessed by the computer, but not limited to this.
  • the memory may exist independently and be connected to the processor through the bus. The memory can also be integrated with the processor.
  • the memory 703 is used to store application program code for executing the solution of the present application, and is controlled and executed by the processor 701.
  • the processor 701 is used to execute the application program code stored in the memory 703, so as to realize the functions in the method of the present patent.
  • the processor 701 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 7.
  • the apparatus 700 may include multiple processors, such as the processor 701 and the processor 707 in FIG. 7. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and / or processing cores for processing data (eg, computer program instructions).
  • the apparatus 700 may further include an output device 705 and an input device 706.
  • the output device 705 communicates with the processor 701 and can display information in various ways.
  • the output device 705 may be a liquid crystal display (LCD) or the like.
  • the input device 706 communicates with the processor 701 and can accept user input in a variety of ways.
  • the input device 706 may be a touch screen device or a sensing device.
  • FIG. 8 is a schematic diagram of an apparatus 800 for determining a spectrum resource provided by an embodiment of the present application.
  • the device 800 includes at least one processor 801, a bus system 802, a memory 803, and at least one transceiver 804.
  • the device 800 is a device with a hardware structure, and can be used to implement functional modules in the device described in FIG. 5.
  • the processing unit 502 in the device 500 shown in FIG. 5 may be implemented by the at least one processor 801 calling code in the memory 803, and the receiving unit 501 in the device 500 shown in FIG. 5 and The sending unit 503 may be implemented by the transceiver 804.
  • the device 800 may also be used to implement the function of the sending end in any of the above embodiments.
  • the processor 801 may be a general-purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more used to control the An integrated circuit for application program execution.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the above bus system 802 may include a path to transfer information between the above components.
  • the above transceiver 804 is used to communicate with other devices or communication networks.
  • the above-mentioned memory 803 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM), or other devices that can store information and instructions
  • Type of dynamic storage device can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), read-only compact disc (compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc Storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can be used by Any other media accessed by the computer, but not limited to this.
  • the memory may exist independently and be connected to the processor through the bus. The memory can also be integrated with the processor.
  • the memory 803 is used to store application program code for executing the solution of the present application, and is controlled and executed by the processor 801.
  • the processor 801 is used to execute the application program code stored in the memory 803, so as to realize the functions in the method of the present patent.
  • the processor 801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8.
  • the apparatus 800 may include multiple processors, such as the processor 801 and the processor 807 in FIG. 8. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and / or processing cores for processing data (eg, computer program instructions).
  • the apparatus 800 may further include an output device 805 and an input device 806.
  • the output device 805 communicates with the processor 801 and can display information in various ways.
  • the output device 805 may be a liquid crystal display (LCD).
  • the input device 806 communicates with the processor 801 and can accept user input in a variety of ways.
  • the input device 806 may be a touch screen device or a sensing device.
  • FIG. 9 is a schematic diagram of an apparatus 900 for determining spectrum resources provided by an embodiment of the present application.
  • the device 900 includes at least one processor 901, a bus system 902, a memory 903, and at least one transceiver 904.
  • the device 900 is a device with a hardware structure, and can be used to implement functional modules in the device described in FIG. 6.
  • the processing unit 602 in the device 600 shown in FIG. 6 may be implemented by the at least one processor 901 calling code in the memory 903, and the receiving unit 601 in the device 500 shown in FIG. 6 may Realized by the transceiver 904.
  • the device 900 may also be used to implement the functions of the sending end in any of the foregoing embodiments.
  • the processor 901 may be a general-purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more used to control the An integrated circuit for application program execution.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the above bus system 902 may include a path to transfer information between the above components.
  • the above transceiver 904 is used to communicate with other devices or communication networks.
  • the above-mentioned memory 903 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), or other devices that can store information and instructions
  • Type of dynamic storage device can also be electrically erasable programmable read-only memory (electrically erasable programmable-read-only memory (EEPROM), read-only compact disc (compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc Storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store the desired program code in the form of instructions or data structures and can be used by Any other media accessed by the computer, but not limited to this.
  • the memory may exist independently and be connected to the processor through the bus. The memory can also be integrated with the processor.
  • the memory 903 is used to store application program codes for executing the solution of the present application, and the processor 901 controls execution.
  • the processor 901 is used to execute the application program code stored in the memory 903, so as to realize the function in the method of the present patent.
  • the processor 901 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 9.
  • the apparatus 900 may include multiple processors, such as the processor 901 and the processor 907 in FIG. 9. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and / or processing cores for processing data (eg, computer program instructions).
  • the apparatus 900 may further include an output device 905 and an input device 906.
  • the output device 905 communicates with the processor 901 and can display information in various ways.
  • the output device 905 may be a liquid crystal display (liquid crystal display, LCD) or the like.
  • the input device 906 communicates with the processor 901 and can accept user input in a variety of ways.
  • the input device 806 may be a touch screen device or a sensing device.
  • An embodiment of the present application provides a system 1000 for determining a spectrum resource.
  • the system 1000 includes: the device shown in FIG. 4 or 7 and the device shown in FIG. 5 or 8. Referring to FIG. 10, the device shown in FIG. 4 or FIG. 7 may be the first device 1001, and the device shown in FIG. 5 or FIG. 8 may be the second device 1002.
  • the program may be stored in a computer-readable storage medium.
  • the mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

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Abstract

La présente invention concerne un procédé, un appareil et un système de détermination de ressources spectrales, qui se rapportent au domaine des communications. Le procédé comprend les étapes consistant à : envoyer par un premier dispositif, dans un délai d'allocation d'un premier créneau temporel de données, des informations d'allocation au moyen d'une première ressource spectrale, la première ressource spectrale étant, dans un canal, une partie d'une ressource spectrale correspondant à un identifiant du premier dispositif, le premier créneau temporel de données comprenant le délai d'affection et un délai de données après le délai d'affectation, et les informations d'affectation étant utilisées pour demander l'affectation de la ressource spectrale dans le canal ; recevoir par le premier dispositif des informations de retour d'affectation envoyées par au moins un second dispositif, les informations de retour d'affectation indiquant le dispositif demandant, dans le délai d'affectation, l'affectation de la ressource spectrale dans le canal ; et déterminer par le premier dispositif une seconde ressource spectrale selon les informations de retour d'affectation, la seconde ressource spectrale étant une ressource spectrale dans le canal disponible pour le premier dispositif dans le délai de données. La présente invention améliore la qualité de service de la communication.
PCT/CN2018/114633 2018-11-08 2018-11-08 Procédé, appareil et système de détermination de ressources spectrales Ceased WO2020093330A1 (fr)

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US20140036889A1 (en) * 2011-04-11 2014-02-06 Lg Electronics Inc. Method and device for transmitting reception acknowledgement information in a mobile communication system
CN107079496A (zh) * 2014-09-29 2017-08-18 高通股份有限公司 使用非授权射频谱带接入小区的技术
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