WO2017214980A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
WO2017214980A1
WO2017214980A1 PCT/CN2016/086243 CN2016086243W WO2017214980A1 WO 2017214980 A1 WO2017214980 A1 WO 2017214980A1 CN 2016086243 W CN2016086243 W CN 2016086243W WO 2017214980 A1 WO2017214980 A1 WO 2017214980A1
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WIPO (PCT)
Prior art keywords
channel
user equipment
preset
preset broadcast
resource
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PCT/CN2016/086243
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English (en)
French (fr)
Inventor
赵毅男
肖洁华
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华为技术有限公司
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Priority to PCT/CN2016/086243 priority Critical patent/WO2017214980A1/zh
Publication of WO2017214980A1 publication Critical patent/WO2017214980A1/zh

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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

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • LTE Long term evolution
  • SCC secondary component carrier
  • the 3rd generation partnership project (3GPP) clearly stipulates that the use of unlicensed spectrum to transmit information must be performed before listening (listed before talk, LBT), that is, idle channel detection is required before acquiring the channel (clear The channel assessment (referred to as CCA) mechanism, the CCA determines the channel usage based on the energy monitoring of the radio frequency.
  • LBT listening before talk
  • CCA idle channel detection
  • the CCA determines the channel usage based on the energy monitoring of the radio frequency.
  • 3GPP has formed a relatively complete solution for downlink LBT. On this basis, the scheme for uplink LBT is still under discussion.
  • the 3GPP has reached an agreement on the uplink LBT: the LAA supports the user equipment (UE) side to perform uplink LBT, that is, the UE can perform CCA before transmitting data.
  • the UE Under the protocol, in the LBT uplink solution of the prior art, after acquiring the uplink scheduling permission, the UE performs the uplink LBT. If the channel is in the idle state according to the energy monitoring of the radio end, the UE acquires the channel for uplink data transmission, and if When the out channel is in the occupied state, the backoff is performed, and the LBT is re-executed after the end of the backoff.
  • the UE that obtains the uplink scheduling permission first performs the LBT, and if it is determined that the channel is in the occupied state, the backoff is performed, that is, as long as other user equipments occupy the channel, even if only part of the physical resources of the channel are occupied, After the LBT is performed, the UE cannot perform uplink data transmission, resulting in waste of physical resources.
  • the embodiment of the invention provides a data transmission method and device, which solves the problem that the UE wastes physical resources when using the unlicensed spectrum data of the LTE network in the prior art.
  • the embodiment of the present invention provides a data transmission method, which is applied to a first user equipment, where the method includes: sending an uplink scheduling request to a base station; receiving an uplink scheduling permission sent by the base station, where the uplink scheduling permission is used. And indicating to the channel allocated by the base station to the first user equipment; monitoring whether the channel carries a preset broadcast signal, where the preset broadcast signal is used by a second user equipment that has accessed the base station When the data is transmitted in the channel, when the preset broadcast signal is carried in the channel, the first user equipment is controlled to transmit data in the channel and the second user equipment by using frequency division multiplexing.
  • the first user equipment sends an uplink scheduling request to the base station, and receives an uplink scheduling grant sent by the base station, where the uplink scheduling grant is used to indicate the channel allocated by the base station to the first user equipment; Whether the preset broadcast signal is carried in the channel, and the preset broadcast signal is sent by the second user equipment accessing the base station when transmitting data in the channel; when the channel carries a preset broadcast And transmitting, by the first user equipment, the data in the channel and the second user equipment by using frequency division multiplexing.
  • the first user equipment is controlled in the The second user equipment in the channel and the second user equipment transmit data in a frequency division multiplexing manner, so that the first user equipment and the second user equipment use the same channel to transmit data at the same time, thereby avoiding waste of physical resources in the channel.
  • the uplink scheduling permission is further used to indicate a first target physical resource in the channel, the first target physical resource and the second
  • the physical resources utilized by the user equipment to transmit data in the channel are in the same transmission time interval TTI, and the physical resources used by the first target physical resource and the second user equipment to transmit data in the channel are different.
  • the controlling the first user equipment to transmit data in the channel and the second user equipment by using frequency division multiplexing including: controlling the first user equipment to be on the first target physical resource transfer data.
  • the base station directly indicates the allocated channel and the first target physical resource in an uplink scheduling grant sent to the first user equipment.
  • the first user equipment may directly use the first target physical resource when transmitting data according to the uplink scheduling grant. Therefore, when the first user equipment determines that the preset broadcast signal is carried in the channel, the first user equipment may be controlled to transmit data on the first target physical resource allocated by the base station.
  • the implementation manner not only enables the first user equipment and the second user equipment to transmit data by using frequency division multiplexing on the channel, thereby avoiding waste of physical resources in the channel, and The manner in which the first user equipment acquires the physical resources for transmitting data is simple.
  • the controlling the first user equipment to transmit data in the channel and the second user equipment by using frequency division multiplexing including Obtaining a physical resource when the second user equipment transmits data in the channel; determining, in the channel, a second target different from a physical resource used by the second user equipment when transmitting data in the channel Physical resources, the second target physical resource and the physical resource utilized by the second user equipment when transmitting data in the channel are in the same transmission time interval TTI; controlling the first user equipment in the second target Transfer data on physical resources.
  • the first user equipment determines that the preset broadcast signal is carried in the channel
  • the first user equipment acquires data in the same TTI and the second user equipment transmits data in the channel
  • Implementing the second target physical resource with different physical resources, and controlling the second target physical resource with different physical resources utilized by the second user equipment when transmitting data in the channel implementing the first user equipment and the The second user equipment transmits data by using frequency division multiplexing on the channel, thereby avoiding waste of physical resources in the channel.
  • the monitoring whether the channel carries a preset broadcast signal includes: acquiring energy on a first preset broadcast resource in the channel a value of the value of the first preset broadcast resource is greater than the first preset threshold; and when the energy value of the first preset broadcast resource is greater than the first preset threshold, determining the location The preset broadcast signal is carried in the channel.
  • the first preset broadcast resource dedicated to the preset broadcast signal is reserved in advance, and one of the first user equipments is not pre-configured with the first preset broadcast resource. a manner of the first preset threshold value that matches the energy value of the preset broadcast signal, so that the first user equipment can use the energy value on the first preset broadcast resource and the first preset gate The magnitude relationship between the limits determines whether a predetermined broadcast signal is carried in the channel.
  • the first preset broadcast resource corresponds to orthogonal in each preset number of consecutive resource blocks in the channel Frequency division multiplexed OFDM symbols.
  • the radio frequency end of the first user equipment may perform energy detection in advance, and the first user equipment may confirm whether the channel is confirmed as early as possible.
  • the preset broadcast signal is carried to reduce the waste of time resources and avoid the purpose of decoding delay.
  • Carrying a preset broadcast signal including: performing blind search on the second preset broadcast resource in the channel; determining whether there is a preset sequence according to the blind search result; determining the bearer in the channel when there is a preset sequence There is a preset broadcast signal.
  • the second preset broadcast resource can be used for transmitting data in addition to the preset broadcast signal, so that the waste of resources caused by reserved resources in the previous specific implementation manner can be eliminated.
  • the second preset broadcast resource corresponds to the first OFDM symbol of the channel in each transmission time interval .
  • the first OFDM symbol in each transmission time interval is reserved as the second preset broadcast resource, so that the bandwidth for data transmission can reach 80% of the system bandwidth requirement.
  • the method further includes: determining, when the preset broadcast signal is not carried in the channel, Whether the energy value of the channel is smaller than the second preset threshold; when the energy value of the channel is less than the second preset threshold, determining that the channel is idle, and controlling the first user equipment in the channel Transmitting data; when the energy value of the channel is greater than or equal to a preset threshold, performing the step of monitoring whether the channel carries a preset broadcast signal.
  • the monitoring device continues to be monitored. Whether the preset broadcast signal is carried in the channel. Since the implementation manner can determine whether the preset broadcast signal is carried in the channel, the implementation manner can more accurately determine whether the preset broadcast signal is carried in the channel.
  • the method further includes: when the first user equipment completes data transmission, sending a transmission completion indication to the base station, And causing the base station to release physical resources occupied by the first user equipment.
  • the transmission completion indication may be sent to the base station, so that the base station releases the physical resources occupied by the first user equipment. Therefore, the implementation manner can prevent the same user equipment from continuously occupying physical resources in the channel and improve the utilization of physical resources in the channel.
  • the method further includes: when the first user equipment transmits data, determining a third preset broadcast in the channel a resource; transmitting a preset broadcast signal on the third preset broadcast resource.
  • the user equipment that is in the coverage of the signal sent by the base station can learn the situation that the first user equipment occupies the channel, thereby implementing the method of using the frequency division multiplexing with the first user equipment. transfer data.
  • the embodiment of the present invention provides a data transmission apparatus, where the apparatus includes: a sending module, configured to send an uplink scheduling request to a base station; and a receiving module, configured to receive an uplink scheduling grant sent by the base station, where the uplink
  • the scheduling permission is used to indicate the channel allocated by the base station to the first user equipment
  • the monitoring module is configured to monitor whether the channel carries a preset broadcast signal, where the preset broadcast signal is accessed by the base station.
  • the second user equipment is sent when the data is transmitted in the channel; the control module is configured to control, when the channel carries a preset broadcast signal, the first user equipment in the channel and the The two user equipments transmit data by means of frequency division multiplexing.
  • the first user equipment sends an uplink scheduling request to the base station, and receives an uplink scheduling grant sent by the base station, where the uplink scheduling grant is used to indicate the channel allocated by the base station to the first user equipment; Whether the preset broadcast signal is carried in the channel, and the preset broadcast signal is sent by the second user equipment accessing the base station when transmitting data in the channel; when the channel carries a preset broadcast And transmitting, by the first user equipment, the data in the channel and the second user equipment by using frequency division multiplexing.
  • the data transmission device of the embodiment of the present invention controls the first user equipment to be in the foregoing when monitoring a preset broadcast signal sent when the second user equipment accessing the base station transmits data in the channel
  • the second user equipment in the channel and the second user equipment transmit data in a frequency division multiplexing manner, so that the first user equipment and the second user equipment use the same channel to transmit data at the same time, thereby avoiding waste of physical resources in the channel.
  • the uplink scheduling permission received by the receiving module is further used to indicate a first target physical resource in the channel, the first target physical resource and The physical resources utilized by the second user equipment when transmitting data in the channel are within the same transmission time interval TTI, and the first target physical resource and the second user equipment utilize data when transmitting data in the channel
  • the control module is specifically configured to control the first user equipment to transmit data on the first target physical resource.
  • the base station directly indicates the allocated channel and the first target physical resource in an uplink scheduling grant sent to the first user equipment.
  • the first user equipment may directly use the first target physical resource when transmitting data according to the uplink scheduling grant. Therefore, when the first user equipment determines that the preset broadcast signal is carried in the channel, the first user equipment may be controlled to transmit data on the first target physical resource allocated by the base station.
  • the first user equipment and the second user equipment transmit data in a frequency division multiplexing manner on the channel, thereby avoiding waste of physical resources in the channel, and the first user equipment acquires The way to transfer the physical resources of data is simple.
  • the control module includes: a first acquiring unit, configured to acquire physical resources when the second user equipment transmits data in the channel a first determining unit, configured to determine, in the channel, a second target physical resource different from a physical resource utilized by the second user equipment when transmitting data in the channel, the second target physical resource and a The physical resource utilized by the second user equipment to transmit data in the channel is in the same transmission time interval TTI; and the control unit is configured to control the first user equipment to transmit data on the second target physical resource.
  • the first user equipment determines that the preset broadcast signal is carried in the channel
  • the first user equipment acquires data in the same TTI and the second user equipment transmits data in the channel
  • Implementing the second target physical resource with different physical resources, and controlling the second target physical resource with different physical resources utilized by the second user equipment when transmitting data in the channel implementing the first user equipment and the The second user equipment transmits data by using frequency division multiplexing on the channel, thereby avoiding waste of physical resources in the channel.
  • the monitoring module includes: a second acquiring unit, configured to acquire an energy value on a first preset broadcast resource in the channel; a determining unit, configured to determine whether the energy value of the first preset broadcast resource is greater than a first preset threshold; the second determining unit is configured to: when the energy value of the first preset broadcast resource is greater than When the first preset threshold is used, it is determined that the channel carries a preset broadcast signal.
  • the first preset broadcast resource dedicated to the preset broadcast signal is reserved in advance, and one of the first user equipments is not pre-configured with the first preset broadcast resource. a manner of the first preset threshold value that matches the energy value of the preset broadcast signal, so that the first user equipment can use the energy value on the first preset broadcast resource and the first preset gate The magnitude relationship between the limits determines whether a predetermined broadcast signal is carried in the channel.
  • the first preset broadcast resource corresponds to the first resource in each preset number of consecutive resource blocks in the channel The first orthogonal frequency division multiplexing OFDM symbol of the block.
  • the radio frequency end of the first user equipment may perform energy detection in advance, and the first user equipment may confirm whether the channel is confirmed as early as possible.
  • the preset broadcast signal is carried to reduce the waste of time resources and avoid the purpose of decoding delay.
  • the monitoring module includes: a blind search unit, configured to perform blind search on a second preset broadcast resource in the channel; Judging unit for root Determining whether there is a preset sequence according to the result of the blind search; the third determining unit is configured to determine that the preset broadcast signal is carried in the channel when the preset sequence exists.
  • the second preset broadcast resource can be used for transmitting data in addition to the preset broadcast signal, so that the waste of resources caused by reserved resources in the previous specific implementation manner can be eliminated.
  • the second preset broadcast resource corresponds to the first OFDM symbol of the channel in each transmission time interval .
  • the first OFDM symbol in each transmission time interval is reserved as the second preset broadcast resource, so that the bandwidth for data transmission can reach 80% of the system bandwidth requirement.
  • the method further includes: a determining module, configured to: when the channel does not carry a preset broadcast signal Determining whether the energy value of the channel is less than a second preset threshold; the first determining module is configured to determine that the channel is idle when the energy value of the channel is less than a second preset threshold, and Controlling, by the first user equipment, data transmission in the channel; when the energy value of the channel is greater than or equal to a second preset threshold, performing whether to monitor whether the channel carries a preset broadcast signal step.
  • the monitoring device continues to be monitored. Whether the preset broadcast signal is carried in the channel. Since the implementation manner can determine whether the preset broadcast signal is carried in the channel, the implementation manner can more accurately determine whether the preset broadcast signal is carried in the channel.
  • the method further includes: an indication sending module, configured to: when the first user equipment completes data transmission, to the base station And transmitting a transmission completion indication, so that the base station releases the physical resources occupied by the first user equipment.
  • the transmission completion indication may be sent to the base station, so that the base station releases the physical resources occupied by the first user equipment. Therefore, the implementation manner can prevent the same user equipment from continuously occupying physical resources in the channel and improve the utilization of physical resources in the channel.
  • the method further includes: a second determining module, configured to determine the channel when the first user equipment transmits data a third preset broadcast resource; a signal sending module, configured to send a preset broadcast signal on the third preset broadcast resource.
  • the user equipment that is in the coverage of the signal sent by the base station can learn the situation that the first user equipment occupies the channel, thereby implementing the method of using the frequency division multiplexing with the first user equipment. transfer data.
  • an embodiment of the present invention provides a user equipment, including a processor and a transceiver, where the processor is configured to send an uplink scheduling request to a base station by using the transceiver, and send, by the transceiver, the base station to send Uplink scheduling permission, the uplink scheduling grant is used to indicate a channel allocated by the base station to the first user equipment; and the transceiver is configured to monitor whether the channel carries a preset broadcast signal, the preset broadcast Transmitting, when the second user equipment that has accessed the base station transmits data in the channel; when the channel carries a preset broadcast signal, the transceiver is in the channel and the The second user equipment transmits data by means of frequency division multiplexing.
  • the user equipment includes: a processor and a transceiver, where the processor is configured to send an uplink scheduling request to the base station by using the transceiver, and receive, by using the transceiver, an uplink scheduling permission sent by the base station, where
  • the uplink scheduling grant is used to indicate that the base station allocates a channel for the first user equipment; and the transceiver monitors whether the channel carries a preset broadcast signal, and the preset broadcast signal is accessed by
  • the second user equipment of the base station transmits when data is transmitted in the channel; when the channel carries a preset broadcast signal, the transceiver is used in the channel and the second user equipment by using the transceiver Data is transmitted in a frequency division multiplexing manner.
  • the user equipment of the embodiment of the present invention monitors a preset broadcast signal sent when the second user equipment accessing the base station transmits data in the channel
  • the first user equipment is controlled to be in the channel.
  • the second user equipment uses the frequency division multiplexing method to transmit data, so that the first user equipment and the second user equipment use the same channel to transmit data at the same time, thereby avoiding waste of physical resources in the channel.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • the application scenario includes a base station (eNB) and n (where n ⁇ 2) user equipments (UEs), where the UE herein may be a mobile phone, a tablet computer, a notebook computer, or a smart watch in the process of implementing the present invention. And other electronic equipment.
  • the n UEs may perform data interaction with the eNB through the licensed spectrum or the unlicensed spectrum of the LTE network within the coverage of the radio signal sent by the eNB.
  • each UE can utilize the unlicensed spectrum of the LTE network for data transmission.
  • each UE In order to meet the reasonable coexistence of LTE and WiFi, and in order to meet the special provisions of some countries (Europe, Japan, etc.) for transmitting information on unlicensed spectrum, each UE must perform LBT when transmitting data using the unlicensed spectrum of the LTE network. Specifically, each UE in the prior art sends an uplink scheduling request to the eNB when the data is transmitted by using the unlicensed spectrum of the LTE network, and after receiving the uplink scheduling request, the eNB sends an uplink scheduling to the corresponding UE. license. After obtaining the corresponding uplink scheduling permission, the UE performs the uplink LBT.
  • the UE acquires the channel for uplink data transmission, and if it determines that the channel is in the occupied state, it performs backoff. And re-execute LBT after the end of the retreat.
  • the UE that obtains the uplink scheduling permission in the prior art performs the LBT first, and if it is determined that the channel is in the occupied state, the UE performs the backoff. That is, as long as other user equipments occupy the channel, even if only part of the physical resources of the channel are occupied, the UE after the LBT can not perform uplink data transmission, which causes waste of unoccupied physical resources in the channel.
  • the embodiment of the present invention provides a data transmission method and device, which solves the problem that the UE wastes physical resources when using the unlicensed spectrum data of the LTE network in the prior art.
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention. This embodiment is performed by the user equipment, and the data transmission method of the embodiment uses the unlicensed spectrum of the LTE network for data transmission.
  • the user equipment that executes the embodiment is referred to as a first user equipment.
  • the embodiment may include the following steps:
  • step S210 an uplink scheduling request is sent to the base station.
  • the first user equipment may be an electronic device such as a mobile phone, a tablet computer, a notebook computer, a smart watch, and the like, and the first user equipment is within a coverage of a wireless signal sent by the base station (eNB).
  • the base station eNB
  • the first user equipment sends an uplink scheduling request to the base station.
  • step S220 an uplink scheduling grant sent by the base station is received.
  • the base station after receiving the uplink scheduling request sent by the first user equipment, the base station sends an uplink scheduling permission to the first user equipment, where the first user equipment receives the uplink sent by the base station. Scheduling license.
  • the uplink scheduling grant is used to indicate a channel allocated by the base station to the first user equipment.
  • step S230 it is monitored whether a preset broadcast signal is carried in the channel.
  • the first user equipment monitors whether a preset broadcast signal is carried in a channel indicated by the uplink scheduling grant.
  • the preset broadcast signal is sent by the second user equipment that has accessed the base station when the data is transmitted in the channel, and the second user equipment is within the coverage of the wireless signal sent by the base station.
  • the user equipments of the first user equipment are different, and the number of the second user equipments is one or more.
  • the preset broadcast signal has multiple forms of existence.
  • the preset broadcast signal may exist in the form of all 1 sequence, all 0 sequence, 01 sequence, etc., and there are also many steps S230. Specific embodiments, the following examples are explained:
  • step S230 may include:
  • the channel carries a preset broadcast signal.
  • the first preset broadcast resource is dedicated to carrying the preset broadcast signal.
  • a first preset gate that matches the energy value when the first preset broadcast resource does not carry the preset broadcast signal is set in the first user equipment in advance. Limit.
  • the first user equipment uses the radio frequency end to acquire energy on the first preset broadcast resource in the channel. And determining, by the first user equipment, a corresponding energy value, and determining, according to the size relationship between the energy value on the first preset broadcast resource and the first preset threshold, whether the channel carries Preset broadcast signal.
  • the The channel carries a preset broadcast signal, that is, a second user equipment that currently uses the physical resource of the channel to transmit data and transmits the preset broadcast signal by using the first preset broadcast resource.
  • the location of the first preset broadcast resource in the channel may be determined according to actual needs. For example, in order to make the bandwidth occupied by the final transmission data reach 80% of the system bandwidth, the first preset broadcast resource corresponds to the first of each preset number of resource rlocks (RBs) in the channel.
  • the first orthogonal frequency division multiplexing (OFDM) symbol of the resource block, the preset number here can be set according to the actual situation.
  • the preset broadcast signal in order to transmit a preset broadcast signal every MHz, it may be pre-agreed to correspond to the first RB of every five consecutive RBs in the entire system bandwidth in each transmission time interval (TTI).
  • TTI transmission time interval
  • the first OFDM symbol is reserved for the first preset broadcast resource.
  • the first preset broadcast resource dedicated to the preset broadcast signal is reserved in advance, and one of the first user equipments is not pre-loaded with the first preset broadcast resource.
  • the first preset threshold value that matches the energy value of the preset broadcast signal, and further, the first user equipment determines that the energy value of the first preset broadcast resource is greater than the first preset When the threshold is set, it can be determined that the channel carries a preset broadcast signal.
  • the radio frequency end of the first user equipment may perform energy in advance The detection, and the first user equipment can confirm whether the preset broadcast signal is carried in the channel as soon as possible, thereby reducing the waste of time resources and avoiding the purpose of decoding delay.
  • the multiple second user equipments use the first preset broadcast resource to carry the preset broadcast signal that is sent by the second user equipment, which also causes the radio frequency end to be in the first pre- When the energy detection is performed on the broadcast resource, the accuracy of detecting the energy at the radio frequency end is increased.
  • step S230 may include:
  • the first user equipment performs a sequence blind search on a second preset broadcast resource in the channel.
  • the preset sequence is searched, it is determined that the channel carries a preset broadcast signal, that is, a second device that currently uses the physical resource of the channel to transmit data and uses the second broadcast resource to send a preset broadcast signal.
  • the preset sequence may be an all-one sequence, an all-zero sequence, a 01 sequence, or the like.
  • the second preset broadcast resource is not dedicated, and the second preset broadcast resource may be used to transmit data in addition to the preset broadcast signal.
  • the second preset broadcast resource The location can also be based on actual needs.
  • the second preset broadcast resource corresponds to the first OFDM symbol of the channel in each TTI.
  • the second preset broadcast resource can be used for transmitting data in addition to the preset broadcast signal, so that the reserved resources in the previous specific implementation manner can be eliminated. Waste of resources.
  • step S240 the first user equipment is controlled to transmit data in the channel and the second user equipment by using frequency division multiplexing.
  • the first user equipment monitors that the channel carries a preset broadcast signal in step S230, it indicates that the channel is occupied by the second user equipment of the LTE, that is, the second user equipment is in the The channel has been LBT, which is consistent with the rule of listening first. Therefore, in the step, the first user equipment accesses the channel, and controls the first user equipment to transmit data in the channel and the second user equipment by using frequency division multiplexing.
  • the step S240 has multiple execution modes, which are illustrated by the following examples:
  • the uplink scheduling grant is further used to indicate a first target physical resource in the channel, where the first target physical resource and the second user equipment are The physical resources utilized in transmitting data in the channel are within the same transmission time interval TTI, and the physical resources utilized by the first target physical resource and the second user equipment when transmitting data in the channel are different.
  • step S240 can include:
  • the base station after receiving the uplink call request sent by the first user equipment, the base station not only allocates the channel to the first user equipment, but also first in the channel.
  • the target physical resource is allocated to the first user equipment, and the channel and the first target physical resource are indicated by the uplink scheduling grant.
  • the first user equipment may be controlled to transmit data on the first target physical resource allocated by the base station, to implement the The first user equipment and the second user equipment transmit data by using frequency division multiplexing on the channel, thereby avoiding waste of physical resources in the channel.
  • step S240 may include:
  • an energy threshold that matches the energy of the physical resource without the signal may be preset in the first user equipment.
  • the first user equipment can use the radio frequency end to acquire the energy of the physical resources in each frequency domain, and calculate the corresponding energy value.
  • the physical resource of the corresponding frequency domain may be determined as a physical resource when the second user equipment transmits data in the channel.
  • the first user equipment may also notify the first user equipment of the physical resource when the second user equipment transmits data in the channel by sending request information to the base station.
  • the base station may put the information of the physical resource when the second user equipment transmits data in the channel in the uplink scheduling grant, and the first user equipment may be notified by the uplink scheduling permission.
  • a physical resource when the second user equipment transmits data in the channel After acquiring the physical resource when the second user equipment transmits data in the channel, the first user equipment transmits the second user equipment in the channel and the second user equipment in the same TTI. Some or all of the physical resources different in physical resources are determined as the second target physical resources. And the first user equipment controls the first user equipment to transmit data on the second target physical resource, so that the first user equipment and the second user equipment adopt frequency division on the channel. The data is transmitted in a manner that avoids wasting physical resources in the channel.
  • the first user equipment sends an uplink scheduling request to the base station, and receives an uplink scheduling grant sent by the base station, where the uplink scheduling grant is used to indicate the channel allocated by the base station to the first user equipment; Whether the preset broadcast signal is carried in the channel, and the preset broadcast signal is sent by the second user equipment accessing the base station when transmitting data in the channel; when the channel carries a preset broadcast And transmitting, by the first user equipment, the data in the channel and the second user equipment by using frequency division multiplexing.
  • the first user equipment is controlled in the The second user equipment in the channel and the second user equipment transmit data in a frequency division multiplexing manner, so that the first user equipment and the second user equipment use the same channel to transmit data at the same time, thereby avoiding waste of physical resources in the channel.
  • the data transmission method may further include:
  • step S310 it is determined whether the energy value of the channel is less than a second preset threshold.
  • the first user equipment determines whether the energy value in the channel is less than a second preset threshold. That is, the first user equipment performs an LBT to monitor whether the energy in the spectrum range in the channel is higher than a second preset threshold, so as to determine whether the channel is idle.
  • the specific process is the same as the prior art in the technical solution in the prior art, and is not described herein.
  • step S320 the channel is determined to be idle, and the first user equipment is controlled to transmit data in the channel.
  • the first user equipment may transmit data by using physical resources in the channel.
  • the physical resources utilized by the first user equipment to transmit data may be pre-allocated by the base station and indicated in the uplink scheduling grant.
  • step S230 is performed.
  • the first user equipment determines that the channel is idle through the LBT
  • the first user equipment is controlled to transmit data in the channel, and when it is determined that the channel is not idle (ie, The energy value of the channel is greater than or equal to the second preset threshold, and continues to monitor whether the channel carries a preset broadcast signal, so that the first user equipment monitors that the channel carries a preset broadcast.
  • the second user equipment transmits data by means of frequency division multiplexing to avoid waste of physical resources in the channel.
  • the data transmission method may further include:
  • the third preset broadcast resource is the same as or corresponding to the physical resource that carries the preset broadcast signal sent by the second user equipment.
  • the third physical resource may correspond to a first OFDM symbol of a first resource block in each of the preset number of consecutive resource blocks in the channel; or may correspond to the first of the channels in each transmission time interval. OFDM symbol.
  • the first user equipment may also select a physical resource in the channel as the third physical resource.
  • the first user equipment when the first user equipment transmits data, the first user equipment sends a preset broadcast signal by using the determined third physical resource, so as to subsequently enter the base.
  • the user equipment in the coverage of the signal sent by the station can also transmit data in the manner of frequency division multiplexing with the first user equipment according to the method in the embodiment of the present invention, thereby avoiding waste of the physical resources of the channel.
  • the data transmission method may further include:
  • a transmission completion indication is sent to the base station.
  • the base station releases the physical resource occupied by the first user equipment, and further prevents the first user equipment from continuing to occupy the data when the data transmission is completed.
  • the physical resources within the channel Therefore, the specific implementation improves the utilization of physical resources within the channel.
  • the present invention also provides a data transmission device with respect to the above method embodiments.
  • FIG. 4 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • the apparatus can be disposed on the first user device, and in particular, each module and unit in the device can be integrated onto at least one integrated chip on the first user device.
  • the apparatus is for performing a data transmission method as shown in FIG. 2.
  • the apparatus may include: a transmitting module 410, a receiving module 420, a listening module 430, and a control module 440.
  • the sending module 410 is configured to send an uplink scheduling request to the base station.
  • the receiving module 420 is configured to receive an uplink scheduling grant sent by the base station, where the uplink scheduling grant is used to indicate a channel allocated by the base station to the first user equipment;
  • the monitoring module 430 is configured to monitor whether a preset broadcast signal is carried in the channel, where the preset broadcast signal is sent by a second user equipment that has accessed the base station to transmit data in the channel;
  • the control module 440 is configured to control, when the channel carries a preset broadcast signal, the first user equipment to transmit data in the channel and the second user equipment by using frequency division multiplexing.
  • the first user equipment sends an uplink scheduling request to the base station, and receives an uplink scheduling grant sent by the base station, where the uplink scheduling grant is used to indicate the channel allocated by the base station to the first user equipment; Whether the preset broadcast signal is carried in the channel, and the preset broadcast signal is sent by the second user equipment accessing the base station when transmitting data in the channel; when the channel carries a preset broadcast Transmitting, by the first user equipment, in the channel and the second user equipment by using frequency division multiplexing Lose data.
  • the data transmission device of the embodiment of the present invention controls the first user equipment to be in the foregoing when monitoring a preset broadcast signal sent when the second user equipment accessing the base station transmits data in the channel
  • the second user equipment in the channel and the second user equipment transmit data in a frequency division multiplexing manner, so that the first user equipment and the second user equipment use the same channel to transmit data at the same time, thereby avoiding waste of physical resources in the channel.
  • the uplink scheduling permission received by the receiving module 420 is further used to indicate a first target physical resource in the channel, the first target physical resource, and the The physical resources utilized by the second user equipment when transmitting data in the channel are within the same transmission time interval TTI, and the physical resources utilized by the first target physical resource and the second user equipment to transmit data in the channel
  • the control module 440 is specifically configured to control the first user equipment to transmit data on the first target physical resource.
  • control module 440 includes: a first acquiring unit, a first determining unit, and a control unit.
  • the first acquiring unit is configured to acquire physical resources when the second user equipment transmits data in the channel;
  • the first determining unit is configured to determine, in the channel, a second target physical resource that is different from a physical resource utilized by the second user equipment when transmitting data in the channel, the second target physical resource and the The physical resources utilized by the second user equipment to transmit data in the channel are within the same transmission time interval TTI;
  • the control unit is configured to control the first user equipment to transmit data on the second target physical resource.
  • the monitoring module 430 includes: a second acquiring unit, a first determining unit, and a second determining unit.
  • the second obtaining unit is configured to acquire an energy value on the first preset broadcast resource in the channel
  • the first determining unit is configured to determine whether the energy value on the first preset broadcast resource is greater than a first preset threshold
  • the second determining unit is configured to determine, when the energy value on the first preset broadcast resource is greater than the first preset threshold, that the preset broadcast signal is carried in the channel.
  • the first preset broadcast resource corresponds to the first orthogonal frequency division multiplexing of the first resource block in each preset number of consecutive resource blocks in the channel. OFDM symbol.
  • the monitoring module 430 includes: a blind search unit, a second determining unit and a third determining unit.
  • the blind search unit is configured to perform blind search on a second preset broadcast resource in the channel
  • the second determining unit is configured to determine, according to the blind search result, whether a preset sequence exists
  • the third determining unit is configured to determine that the preset broadcast signal is carried in the channel when a preset sequence exists.
  • the second preset broadcast resource corresponds to a first OFDM symbol of the channel in each transmission time interval.
  • the data transmission apparatus may further include: a determining module 510 and a first determining module 520.
  • the determining module 510 is configured to determine, when the preset broadcast signal is not carried in the channel, whether the energy value of the channel is less than a second preset threshold;
  • the first determining module 520 is configured to determine that the channel is idle when the energy value of the channel is less than a second preset threshold, and control the first user equipment to transmit data in the channel; When the energy value of the channel is greater than or equal to the second preset threshold, performing the step of monitoring whether the channel carries a preset broadcast signal.
  • the data transmission apparatus may further include: an indication sending module, where the indication sending module is configured to: when the first user equipment completes data transmission, to the The base station sends a transmission completion indication, so that the base station releases the physical resources occupied by the first user equipment.
  • the data transmission apparatus may further include: a second deterministic module and a signal sending module.
  • the second determining module is configured to determine, when the first user equipment transmits data, a third preset broadcast resource in the channel;
  • the signal sending module is configured to send a preset broadcast signal on the third preset broadcast resource.
  • the user equipment may include: a processor 610, a memory 620, a transceiver 630, and the like.
  • the user equipment may further include components such as an output module, an input module, and a sensor.
  • the components may also be connected and communicated in a bus structure or a star structure through one or more buses.
  • the output module may be a display screen, a sound output device, a vibrator, or the like.
  • the input module can be a physical keyboard, a virtual keyboard on the display screen, a microphone and a camera, and the like.
  • the sensing The device can be a navigator, a gyroscope, a gravity sensor, and the like.
  • the processor 610 is a control center of the user equipment, and connects various parts of the entire user equipment by using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 620, and calling the storage in the office.
  • the data within memory 620 is described to perform various functions of the user equipment and/or process data.
  • the processor 610 may be composed of an integrated circuit (IC), for example, may be composed of a single packaged IC, or may be composed of a plurality of packaged ICs that have the same function or different functions.
  • the processor 610 may include only a central processing unit (CPU), or may be a graphics processing unit (GPU), a digital signal processor (DSP). And a combination of control chips (e.g., baseband chips) in the transceiver 630.
  • the CPU may be a single operation core, and may also include multiple operation cores.
  • the transceiver 630 is configured to establish a communication channel, and the user equipment is connected to the receiving device through the communication channel, thereby implementing data transmission between the user equipment and the receiving device, where the receiving device may be a base station, a user equipment, or the like.
  • the transceiver 630 may include a wireless local area network (WLAN) module, a Bluetooth module, a base band module, and the like, and a radio frequency (RF) circuit corresponding to the communication module. Used for wireless local area network communication, Bluetooth communication, infrared communication, and/or cellular communication system communication, such as wideband code division multiple access (WCDMA) and/or high speed downlink packet access (high speed) Downlink packet access (HSDPA).
  • WCDMA wideband code division multiple access
  • HSDPA high speed downlink packet access
  • the transceiver 630 is used to control communication of components in the user equipment and can support direct memory access.
  • the various transceivers 630 in the transceiver 630 are typically in the form of integrated circuit chips and can be selectively combined without necessarily including all of the transceivers 630 and Corresponding antenna group.
  • the transceiver 630 can include only baseband chips, radio frequency chips, and corresponding antennas to provide communication functionality in a cellular communication system.
  • the user equipment can be connected to a cellular network or the Internet via a wireless communication connection established by the transceiver 630, such as wireless local area network access or WCDMA access.
  • a communication module, such as a baseband module, in the transceiver 630 can be integrated into the processor 610.
  • the radio frequency circuit is used for receiving and transmitting signals during information transmission and reception or during a call. For example, after the downlink information of the base station is received, it is processed by the processor 610; in addition, the uplink data is designed to be sent to the base station.
  • the radio frequency circuit includes well-known circuits for performing these functions, including but not limited to an antenna system, a radio frequency transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a codec. (codec) chipset, Subscriber Identity Module (SIM) card, the memory 620, and the like.
  • the RF circuit can also communicate wirelessly. Communicate with the network and other devices.
  • the wireless communication may use any communication standard or protocol, including but not limited to a global system of mobile communication (GSM), a general packet radio service (GPRS), and code division multiple access.
  • GSM global system of mobile communication
  • GPRS general packet radio service
  • code division multiple access code division multiple access
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • HSUPA high speed uplink packet access
  • LTE long-term evolution plan
  • SMS short messaging service
  • the processor 610 is configured to send an uplink scheduling request to the base station by using the transceiver 630, and receive, by using the transceiver 630, an uplink scheduling grant sent by the base station, where the uplink is The scheduling permission is used to indicate a channel allocated by the base station to the first user equipment; and the transceiver 630 monitors whether the channel carries a preset broadcast signal, where the preset broadcast signal is accessed by the The second user equipment of the base station transmits when the data is transmitted in the channel; when the channel carries the preset broadcast signal, the transceiver 630 uses the frequency in the channel and the second user equipment. Data is transmitted in a multiplexed manner.
  • the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM. , a disk, an optical disk, etc., including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.

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Abstract

本发明实施例公开一种数据传输方法及装置，应用于第一用户设备，该方法包括：向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。本发明的技术方案实现了第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。

Description

数据传输方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法及装置。
背景技术
长期演进计划(long term evolution，简称LTE)技术作为主流的通信技术之一，在世界范围内得到了广泛应用。当前情况下，随着网络传输数据量的激增，授权频谱部署的LTE网络已不能满足对系统宽带和无线传输速率的整体要求。为此，授权频谱辅助接入(licensed assist access，简称LAA)技术开始考虑将资源丰富的非授权频谱作为辅成员载波(secondary component carrier，简称SCC)，整合成为LTE网络的一部分，以满足对系统宽带和无线传输速率的整体要求。
然而，为了满足LTE和使用无线保真(wireless fidelity，简称WiFi)技术的无线局域网(wireless local network,简称WLAN)的合理共存，也为了满足某些国家对非授权频谱发送信息的特殊规定，第三代合作伙伴计划(3rd generation partnership project，简称3GPP)中明确规定利用非授权频谱发送信息必须进行先听后说(listen before talk，简称LBT)，即在获取信道前需进行空闲信道检测(clear channel assessment，简称CCA)的机制，CCA依据射频端的能量监测判断信道的使用情况。目前，3GPP关于下行LBT已形成较为完善的方案，在此基础上，关于上行LBT的方案尚在讨论中。
目前，3GPP关于上行LBT已达成协议：LAA支持用户设备(user equipment，简称UE)侧做上行LBT，即UE在发送数据前可进行CCA。在该协议下，现有技术的LBT上行方案中UE在获取上行调度许可后，UE侧做上行LBT，若依据射频端的能量监测判断出信道处于空闲状态，UE获取信道进行数据上行发送，若判断出信道处于被占用状态，则进行退避，并在退避结束后重新进行LBT。该方案中，获取到上行调度许可的UE，先进行LBT，且若判断出信道为被占用状态，则进行退避，即只要其他用户设备占用了信道，哪怕是仅占用了信道的部分物理资源，进行了LBT后的UE就不能进行上行数据发送，造成物理资源的浪费。
发明内容
本发明实施例提供了一种数据传输方法及装置，以解决现有技术中UE在利用LTE网络的非授权频谱数据上行时浪费物理资源的问题。
第一方面，本发明实施例提供了一种数据传输方法，应用于第一用户设备，该方法包括：向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
本发明实施例中，第一用户设备向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。采用本发明实施例的数据传输方法，在监听到接入所述基站的第二用户设备在所述信道中传输数据时所发送的预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，进而实现第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。
结合第一方面，在第一方面第一种可能的实现方式中，所述上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同；所述控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，包括：控制所述第一用户设备在所述第一目标物理资源上传输数据。
该实现方式中，所述基站直接在发送给所述第一用户设备的上行调度许可中指示所分配的信道和第一目标物理资源。相应地，所述第一用户设备可直接根据上行调度许可将第一目标物理资源在传输数据时使用。所以在所述第一用户设备确定所述信道中承载有预设广播信号时，可控制所述第一用户设备在所述基站所分配的所述第一目标物理资源上传输数据。该实现方式不仅实现所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费，且所 述第一用户设备获取传输数据的物理资源的方式简单。
结合第一方面，在第一方面第二种可能的实现方式中，所述控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，包括：获取所述第二用户设备在所述信道中传输数据时的物理资源；在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；控制所述第一用户设备在所述第二目标物理资源上传输数据。
该实现方式，在所述第一用户设备确定所述信道中承载有预设广播信号时，所述第一用户设备在同一TTI内获取与所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，并控制所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，实现了所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费。
结合第一方面，在第一方面第三种可能的实现方式中，所述监听所述信道中是否承载有预设广播信号，包括：获取所述信道内的第一预设广播资源上的能量值；判断所述第一预设广播资源上的能量值是否大于第一预设门限值；当所述第一预设广播资源上的能量值大于第一预设门限值时，确定所述信道中承载有预设广播信号。
该实现方式，通过预先预留专用于承载所述预设广播信号的第一预设广播资源，并预先在所述第一用户设备中设置一个与所述第一预设广播资源没有承载所述预设广播信号时的能量值相匹配的第一预设门限值的方式，使得所述第一用户设备可根据所述第一预设广播资源上的能量值和所述第一预设门限值之间的大小关系确定所述信道中是否承载有预设广播信号。
结合第一方面第三种可能的实现方式，在第一方面第四种可能的实现方式中，所述第一预设广播资源对应于所述信道内每预设数目连续资源块中的正交频分复用OFDM符号。
该实现方式，由于所述第一预设广播资源的位置是确定的，所以所述第一用户设备的射频端可提前进行能量检测，进而所述第一用户设备可尽早确认所述信道中是否承载有预设广播信号，达到降低时间资源的浪费，免于译码延迟的目的。
结合第一方面，在第一方面第五种可能的实现方式中，所述监听所述信道中是否 承载有预设广播信号，包括：在所述信道内的第二预设广播资源上进行盲搜；根据盲搜结果判断是否存在预设序列；当存在预设序列时，确定所述信道中承载有预设广播信号。
该实现方式，所述第二预设广播资源除可承载预设广播信号外，还可用于传输数据，所以能够免去前一具体实施方式中预留资源造成的资源浪费。
结合第一方面第五种可能的实现方式，在第一方面第六种可能的实现方式中，所述第二预设广播资源对应于所述信道在每个传输时间间隔内的首个OFDM符号。
该实现方式，将每个传输时间间隔内的首个OFDM符号预留为所述第二预设广播资源，能够使得用于数据传输的宽带达到系统宽带80％的要求。
结合第一方面或第一方面第一至六种可能的实现方式，在第一方面第七种可能的实现方式中，还包括：当所述信道中没有承载预设广播信号时，判断所述信道的能量值是否小于第二预设门限值；当所述信道的能量值小于第二预设门限值时，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据；当所述信道的能量值大于或等于预设门限值时，执行所述监听所述信道中是否承载有预设广播信号的步骤。
该实现方式，当判断结果为所述信道中没有承载预设广播信号且确定出所述信道不空闲时(即所述信道的能量值大于或等于第二预设门限值)，继续监听所述信道中是否承载有预设广播信号。由于该实现方式可多次判断所述信道中是否承载有预设广播信号，所以该实现方式可更准确地判断所述信道中是否承载有预设广播信号。
结合第一方面第七种可能的实现方式，在第一方面第八种可能的实现方式中，还包括：当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
该实现方式，在所述第一用户设备完成数据传输时，可向所述基站发送传输完成指示，进而使所述基站将所述第一用户设备所占用的物理资源释放。所以该实现方式能够避免同一用户设备持续占用信道内的物理资源，提高信道内物理资源的利用率。
结合第一方面第七种可能的实现方式，在第一方面第九种可能的实现方式中，还包括：当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；在所述第三预设广播资源上发送预设广播信号。
该实现方式，可使后续进入所述基站发出信号覆盖范围内的用户设备能够获知所述第一用户设备占用信道的情况，进而实现与所述第一用户设备利用频分复用的方式 传输数据。
第二方面，本发明实施例提供了一种数据传输装置，该装置包括：发送模块，用于向基站发送上行调度请求；接收模块，用于接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听模块，用于监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；控制模块，用于当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
本发明实施例中，第一用户设备向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。采用本发明实施例的数据传输装置，在监听到接入所述基站的第二用户设备在所述信道中传输数据时所发送的预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，进而实现第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。
结合第二方面，在第二方面第一种可能的实现方式中，所述接收模块接收的上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同；所述控制模块具体用于控制所述第一用户设备在所述第一目标物理资源上传输数据。
该实现方式中，所述基站直接在发送给所述第一用户设备的上行调度许可中指示所分配的信道和第一目标物理资源。相应地，所述第一用户设备可直接根据上行调度许可将第一目标物理资源在传输数据时使用。所以在所述第一用户设备确定所述信道中承载有预设广播信号时，可控制所述第一用户设备在所述基站所分配的所述第一目标物理资源上传输数据。该实现方式不仅实现所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费，且所述第一用户设备获取传输数据的物理资源的方式简单。
结合第二方面，在第二方面第二种可能的实现方式中，所述控制模块，包括：第一获取单元，用于获取所述第二用户设备在所述信道中传输数据时的物理资源；第一确定单元，用于在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；控制单元，用于控制所述第一用户设备在所述第二目标物理资源上传输数据。
该实现方式，在所述第一用户设备确定所述信道中承载有预设广播信号时，所述第一用户设备在同一TTI内获取与所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，并控制所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，实现了所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费。
结合第二方面，在第二方面第三种可能的实现方式中，所述监听模块，包括：第二获取单元，用于获取所述信道内的第一预设广播资源上的能量值；第一判断单元，用于判断所述第一预设广播资源上的能量值是否大于第一预设门限值；第二确定单元，用于当所述第一预设广播资源上的能量值大于第一预设门限值时，确定所述信道中承载有预设广播信号。
该实现方式，通过预先预留专用于承载所述预设广播信号的第一预设广播资源，并预先在所述第一用户设备中设置一个与所述第一预设广播资源没有承载所述预设广播信号时的能量值相匹配的第一预设门限值的方式，使得所述第一用户设备可根据所述第一预设广播资源上的能量值和所述第一预设门限值之间的大小关系确定所述信道中是否承载有预设广播信号。
结合第二方面第三种可能的实现方式，在第二方面第四种可能的实现方式中，所述第一预设广播资源对应于所述信道内每预设数目连续资源块中首个资源块的首个正交频分复用OFDM符号。
该实现方式，由于所述第一预设广播资源的位置是确定的，所以所述第一用户设备的射频端可提前进行能量检测，进而所述第一用户设备可尽早确认所述信道中是否承载有预设广播信号，达到降低时间资源的浪费，免于译码延迟的目的。
结合第二方面，在第二方面第五种可能的实现方式中，所述监听模块，包括：盲搜单元，用于在所述信道内的第二预设广播资源上进行盲搜；第二判断单元，用于根 据盲搜结果判断是否存在预设序列；第三确定单元，用于当存在预设序列时，确定所述信道中承载有预设广播信号。
该实现方式，所述第二预设广播资源除可承载预设广播信号外，还可用于传输数据，所以能够免去前一具体实施方式中预留资源造成的资源浪费。
结合第二方面第五种可能的实现方式，在第二方面第六种可能的实现方式中，所述第二预设广播资源对应于所述信道在每个传输时间间隔内的首个OFDM符号。
该实现方式，将每个传输时间间隔内的首个OFDM符号预留为所述第二预设广播资源，能够使得用于数据传输的宽带达到系统宽带80％的要求。
结合第二方面或第二方面第一至六种可能的实现方式，在第二方面第七种可能的实现方式中，还包括：判断模块，用于当所述信道中没有承载预设广播信号时，判断所述信道的能量值是否小于第二预设门限值；第一确定模块，用于当所述信道的能量值小于第二预设门限值时，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据；当所述信道的能量值大于或等于第二预设门限值时，执行所述监听所述信道中是否承载有预设广播信号的步骤。
该实现方式，当判断结果为所述信道中没有承载预设广播信号且确定出所述信道不空闲时(即所述信道的能量值大于或等于第二预设门限值)，继续监听所述信道中是否承载有预设广播信号。由于该实现方式可多次判断所述信道中是否承载有预设广播信号，所以该实现方式可更准确地判断所述信道中是否承载有预设广播信号。
结合第二方面第七种可能的实现方式，在第二方面第八种可能的实现方式中，还包括：指示发送模块，用于当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
该实现方式，在所述第一用户设备完成数据传输时，可向所述基站发送传输完成指示，进而使所述基站将所述第一用户设备所占用的物理资源释放。所以该实现方式能够避免同一用户设备持续占用信道内的物理资源，提高信道内物理资源的利用率。
结合第二方面第七种可能的实现方式，在第二方面第九种可能的实现方式中，还包括：第二确定模块，用于当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；信号发送模块，用于在所述第三预设广播资源上发送预设广播信号。
该实现方式，可使后续进入所述基站发出信号覆盖范围内的用户设备能够获知所述第一用户设备占用信道的情况，进而实现与所述第一用户设备利用频分复用的方式 传输数据。
第三方面，本发明实施例提供了一种用户设备，包括，处理器和收发器，所述处理器用于通过所述收发器向基站发送上行调度请求；通过所述收发器接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；通过所述收发器监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，通过所述收发器在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
本发明实施例中，所述用户设备包括，处理器和收发器，所述处理器用于通过所述收发器向基站发送上行调度请求；通过所述收发器接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；通过所述收发器监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，通过所述收发器在所述信道中和所述第二用户设备采用频分复用的方式传输数据。本发明实施例的用户设备在监听到接入所述基站的第二用户设备在所述信道中传输数据时所发送的预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，进而实现第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种应用场景示意图；
图2为本发明实施例提供的一种数据传输方法的流程图；
图3为本发明实施例提供的另一种数据传输方法的流程图；
图4为本发明实施例提供的一种数据传输装置的结构示意图；
图5为本发明实施例提供的另一种数据传输装置的结构示意图；
图6为本发明实施例提供的一种用户设备的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明实施例中的技术方案，并使本发明实施例的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明实施例中的技术方案作进一步详细的说明。
为方便理解，首先结合附图对本发明实施例的应用场景进行说明。参见图1，为本发明实施例提供的一种应用场景示意图。该应用场景中包括一个基站(eNB)和n(其中n≥2)个用户设备(UE)，其中，这里的UE在本发明具体实施的过程中可以是手机、平板电脑、笔记本电脑、智能手表等电子设备。所述n个UE在所述eNB发出的无线信号覆盖范围内，各个UE可以通过LTE网络的授权频谱或非授权频谱与所述eNB进行数据交互。例如，现有技术中，各个UE可以利用LTE网络的非授权频谱进行数据传输。
为了满足LTE和WiFi的合理共存,也为了满足某些国家(欧洲、日本等)对非授权频谱发送信息的特殊规定，各个UE在利用LTE网络的非授权频谱进行数据传输时必须进行LBT。具体地，现有技术中各个UE在利用LTE网络的非授权频谱进行数据传输时，首先向所述eNB发送上行调度请求，所述eNB在接收到上行调度请求后，向对应的UE发送上行调度许可。各个UE在获取相应的上行调度许可后，UE侧做上行LBT，若依据射频端的能量监测判断出信道处于空闲状态，UE获取信道进行数据上行发送，若判断出信道处于被占用状态，则进行退避，并在退避结束后重新进行LBT。
由此可见，现有技术中获取到上行调度许可的UE，先进行LBT，且若判断出信道为被占用状态，则进行退避。即只要其他用户设备占用了信道，哪怕是仅占用了信道的部分物理资源，进行了LBT后的UE就不能进行上行数据发送，这种情况造成了信道中未被占用的物理资源的浪费。为此，本发明实施例提供了一种数据传输方法及装置，以解决现有技术中UE在利用LTE网络的非授权频谱数据上行时浪费物理资源的问题。
参见图2，为本发明实施例提供的一种数据传输方法的流程图。本实施例由用户设备执行，本实施例的数据传输方法利用LTE网络的非授权频谱进行数据传输。另外，为方便描述，后续将执行本实施例的用户设备称为第一用户设备。具体地，本实施例可以包括以下步骤：
在步骤S210中，向基站发送上行调度请求。
具体地，所述第一用户设备可以是手机、平板电脑、笔记本电脑、智能手表等电子设备，所述第一用户设备在所述基站(eNB)发出的无线信号覆盖范围内。在该步骤中，在用户需要利用所述第一用户设备传输数据时，用户在所述第一用户设备上执行特定的传输操作后，所述第一用户设备向基站发送上行调度请求。
在步骤S220中，接收所述基站发送的上行调度许可。
具体地，所述基站在接收到所述第一用户设备发送的上行调度请求后，所述基站向所述第一用户设备发送上行调度许可，所述第一用户设备接收所述基站发送的上行调度许可。其中，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道。
在步骤S230中，监听所述信道中是否承载有预设广播信号。
具体地，所述第一用户设备在接收到所述基站发送的上行调度许可后，监听所述上行调度许可所指示的信道中是否承载有预设广播信号。其中，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送，所述第二用户设备为所述基站发出的无线信号覆盖范围内与所述第一用户设备不同的用户设备，所述第二用户设备的数目为1个或多个。另外，在本发明具体实施的过程中，所述预设广播信号有多种存在形式，例如所述预设广播信号可以以全1序列、全0序列、01序列等形式存在，步骤S230也有多种具体实施方式，下面举例进行说明：
例如，在本发明的一种具体实施方式中，步骤S230可以包括：
获取所述信道内的第一预设广播资源上的能量值；
判断所述第一预设广播资源上的能量值是否大于第一预设门限值；
当所述第一预设广播资源上的能量值大于第一预设门限值时，确定所述信道中承载有预设广播信号。
在该具体实施方式中，所述第一预设广播资源专用于承载所述预设广播信号。在该具体实施方式实施的过程中，预先在所述第一用户设备中设置一个与所述第一预设广播资源没有承载所述预设广播信号时的能量值相匹配的第一预设门限值。进一步地，所述第一用户设备利用射频端获取所述信道内的第一预设广播资源上的能量。然后所述第一用户设备计算相应的能量值，并根据所述第一预设广播资源上的能量值和所述第一预设门限值之间的大小关系确定所述信道中是否承载有预设广播信号。具体地，当所述第一预设广播资源上的能量值大于所述第一预设门限值时，即可确定所述 信道中承载有预设广播信号，也即当前存在正在利用所述信道的物理资源传输数据并利用所述第一预设广播资源发送预设广播信号的第二用户设备。其中，所述第一预设广播资源在所述信道中的位置可以根据实际需求而定。例如，为使最终传输数据所占用的宽带达到系统宽带80％的要求，所述第一预设广播资源对应于所述信道内每预设数目连续资源块(resource rlock，简称RB)中首个资源块的首个正交频分复用(orthogonal frequency division multiplexing，简称OFDM)符号，这里的预设数目可以根据实际情况进行设定。例如，为使每MHz均有预设广播信号发送，可以预先约定在每个传输时间间隔(transmission time interval，简称TTI)的时间内将整个系统宽带上每5个连续RB中首个RB对应的首个OFDM符号预留为所述第一预设广播资源。
通过该具体实施方式，通过预先预留专用于承载所述预设广播信号的第一预设广播资源，并预先在所述第一用户设备中设置一个与所述第一预设广播资源没有承载所述预设广播信号时的能量值相匹配的第一预设门限值，进而在所述第一用户设备在判断出所述第一预设广播资源上的能量值大于所述第一预设门限值时，即可确定所述信道中承载有预设广播信号。进一步地，当所述第一预设广播资源对应于所述信道内每预设数目连续资源块中首个资源块的首个OFDM符号时，所述第一用户设备的射频端可提前进行能量检测，进而所述第一用户设备可尽早确认所述信道中是否承载有预设广播信号，达到降低时间资源的浪费，免于译码延迟的目的。另外，当所述第二用户设备为多个时，多个第二用户设备均利用所述第一预设广播资源承载其发出的预设广播信号，这也使射频端在所述第一预设广播资源上进行能量检测时，增加射频端检测到能量的准确性。
又例如，在本发明的另一种具体实施方式中，所述步骤S230可以包括：
在所述信道内的第二预设广播资源上进行盲搜；
根据盲搜结果判断是否存在预设序列；
当存在预设序列时，确定所述信道中承载有预设广播信号。
在该具体实施方式中，所述第一用户设备在所述信道内的第二预设广播资源上进行序列盲搜。当搜索到预设序列时，确定所述信道中承载有预设广播信号，也即当前存在正在利用所述信道的物理资源传输数据并利用所述第二广播资源发送预设广播信号的第二用户设备。其中，所述预设序列可以为全1序列、全0序列、01序列等。与前一具体实施方式不同的是，所述第二预设广播资源不是专用的，所述第二预设广播资源除可承载预设广播信号外，还可用于传输数据。另外，所述第二预设广播资源 的位置也可根据实际需求而定。同样，为使最终传输数据所占用的宽带达到系统宽带80％的要求，所述第二预设广播资源对应于所述信道在每个TTI内的首个OFDM符号。
该具体实施方式与前一具体实施方式相比，所述第二预设广播资源除可承载预设广播信号外，还可用于传输数据，所以能够免去前一具体实施方式中预留资源造成的资源浪费。
当所述信道中承载有预设广播信号时，在步骤S240中，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
具体地，当步骤S230中所述第一用户设备监听到所述信道中承载有预设广播信号时，表明所述信道被LTE的第二用户设备占用，即所述第二用户设备在所述信道已进行过LBT，符合先听后说规则。所以在该步骤中，所述第一用户设备接入所述信道，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。其中，在本发明具体实施的过程中，根据实际情况的不同，步骤S240有多种执行方式，下面举例进行说明：
例如，在本发明的一种具体实施方式中，所述上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同。相应地，步骤S240可以包括：
控制所述第一用户设备在所述第一目标物理资源上传输数据。
在该具体实施方式中，所述基站在接收到所述第一用户设备发送的上行调取请求后，除为所述第一用户设备分配所述信道外，还将所述信道内的第一目标物理资源分配给所述第一用户设备，并用上行调度许可指示信道和第一目标物理资源。进而所述第一用户设备确定所述信道中承载有预设广播信号时，可控制所述第一用户设备在所述基站所分配的所述第一目标物理资源上传输数据，以实现所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费。
又例如，在本发明的另一种具体实施方式中，步骤S240可以包括：
获取所述第二用户设备在所述信道中传输数据时的物理资源；
在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；
控制所述第一用户设备在所述第二目标物理资源上传输数据。
在该具体实施方式中，获取所述第二用户设备在所述信道中传输数据时的物理资源的方式可以有多种。例如，由于在物理资源上没有承载信号时其能量是很有限的，所以可在所述第一用户设备中预先设置一个与没有承载信号物理资源的能量所匹配的能量门限值，这时所述第一用户设备可利用射频端获取各个频域的物理资源的能量，并计算相应的能量值。当计算出的能量值大于预先设置的能量门限值时，可将相应频域的物理资源确定为所述第二用户设备在所述信道中传输数据时的物理资源。又例如，所述第一用户设备也可通过向所述基站发送请求信息，由所述基站告知所述第一用户设备所述第二用户设备在所述信道中传输数据时的物理资源。还例如，基站可将所述第二用户设备在所述信道中传输数据时的物理资源的信息放在所述上行调度许可中，通过所述上行调度许可所述第一用户设备即可得知所述第二用户设备在所述信道中传输数据时的物理资源。所述第一用户设备在获取所述第二用户设备在所述信道中传输数据时的物理资源后，在同一TTI内，将所述信道中和所述第二用户设备在所述信道中传输数据时的物理资源不同的部分或全部物理资源确定为第二目标物理资源。进而所述第一用户设备控制所述第一用户设备在所述第二目标物理资源上传输数据，以实现所述第一用户设备和所述第二用户设备在所述信道上采用频分复用的方式传输数据，进而避免信道中物理资源的浪费。
本发明实施例中，第一用户设备向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。采用本发明实施例的数据传输方法，在监听到接入所述基站的第二用户设备在所述信道中传输数据时所发送的预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，进而实现第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。
如图3所示，在本发明的一种具体实施方式中，所述数据传输方法还可以包括：
当所述信道中没有承载预设广播信号时，在步骤S310中，判断所述信道的能量值是否小于第二预设门限值。
当所述信道中没有承载预设广播信号时，在该步骤中，所述第一用户设备判断所述信道中的能量值是否小于第二预设门限值。即所述第一用户设备进行LBT，监测所述信道内的频谱范围内的能量是否高于第二预设门限值，以此来判断所述信道是否空闲。该具体过程与背景技术中的技术方案判断信道是否处于空闲的方式一样，属于已有技术，在此不再赘述。
当所述信道的能量值小于第二预设门限值时，在步骤S320中，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据。
具体地，在确定出所述信道空闲时，所述第一用户设备可利用所述信道中的物理资源传输数据。其中，在本发明具体实施的过程中，所述第一用户设备传输数据时利用的物理资源可由所述基站预先分配，并在所述上行调度许可中指示。
当所述信道的能量值大于或等于第二预设门限值时，执行步骤S230。
通过该具体实施方式，当所述第一用户设备通过LBT确定出所述信道空闲时，控制所述第一用户设备在所述信道中传输数据，当确定出所述信道不空闲时(即所述信道的能量值大于或等于第二预设门限值)，继续监听所述信道中是否承载有预设广播信号，以使所述第一用户设备监听到所述信道中承载有预设广播信号时，和所述第二用户设备通过频分复用的方式传输数据，避免所述信道中物理资源的浪费。
进一步地，为使后续进入所述基站发出的信号覆盖范围内的用户设备能够与所述第一用户设备利用频分复用的方式传输数据，在本发明的一种具体实施方式中，所述数据传输方法还可以包括：
当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；
在所述第三预设广播资源上发送预设广播信号。
具体地，所述第三预设广播资源与承载所述第二用户设备发出的预设广播信号的物理资源相同或相应。例如，所述第三物理资源可对应于所述信道内每预设数目连续资源块中首个资源块的首个OFDM符号；也可对应于所述信道在每个传输时间间隔内的首个OFDM符号。当然，所述第一用户设备也可在所述信道中选择物理资源作为所述第三物理资源。在该具体实施方式中，在所述第一用户设备传输数据时，所述第一用户设备利用所确定出的第三物理资源发送预设广播信号，以使后续进入所述基 站发出的信号覆盖范围内的用户设备也能按照本发明实施例中的方法实现与所述第一用户设备采用频分复用的方式传输数据，避免所述信道物理资源的浪费。
另外，为避免位于所述基站所发出信号覆盖范围内的用户设备持续占用所述信道内的物理资源，进而造成所述信道内物理资源的浪费，为此，在本发明的一种具体实施方式中，所述数据传输方法还可以包括：
当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
在该具体实施方式中，当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示。所述基站在接收到所述第一用户设备发送的传输完成指示时，将所述第一用户设备所占用的物理资源进行释放，进而避免所述第一用户设备完成数据传输时，继续占用所述信道内的物理资源。所以该具体实施方式提高所述信道内物理资源的利用率。
相对于上面的方法实施例，本发明还提供了一种数据传输装置。
参见图4，为本发明实施例提供的一种数据传输装置的结构示意图。该装置可以设置在第一用户设备上，具体可将该装置中的各个模块和单元集成到所述第一用户设备上的至少一个集成芯片上。该装置用于执行如图2所示的数据传输方法。该装置可以包括：发送模块410、接收模块420、监听模块430和控制模块440。
其中，所述发送模块410用于向基站发送上行调度请求；
所述接收模块420用于接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；
所述监听模块430用于监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；
所述控制模块440用于当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
本发明实施例中，第一用户设备向基站发送上行调度请求；接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；监听所述信道中是否承载有预设广播信号，所述预设广播信号由接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传 输数据。采用本发明实施例的数据传输装置，在监听到接入所述基站的第二用户设备在所述信道中传输数据时所发送的预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，进而实现第一用户设备和第二用户设备在同一时间利用同一信道传输数据，避免信道中物理资源的浪费。
可选地，在本发明的一种具体实施方式中，所述接收模块420接收的上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同；所述控制模块440具体用于控制所述第一用户设备在所述第一目标物理资源上传输数据。
可选地，在本发明的一种具体实施方式中，所述控制模块440，包括：第一获取单元、第一确定单元和控制单元。
其中，所述第一获取单元用于获取所述第二用户设备在所述信道中传输数据时的物理资源；
所述第一确定单元用于在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；
所述控制单元用于控制所述第一用户设备在所述第二目标物理资源上传输数据。
可选地，在本发明的一种具体实施方式中，所述监听模块430，包括：第二获取单元、第一判断单元和第二确定单元。
其中，所述第二获取单元用于获取所述信道内的第一预设广播资源上的能量值；
所述第一判断单元用于判断所述第一预设广播资源上的能量值是否大于第一预设门限值；
所述第二确定单元，用于当所述第一预设广播资源上的能量值大于第一预设门限值时，确定所述信道中承载有预设广播信号。
可选地，在本发明的一种具体实施方式中，所述第一预设广播资源对应于所述信道内每预设数目连续资源块中首个资源块的首个正交频分复用OFDM符号。
可选地，在本发明的一种具体实施方式中，所述监听模块430，包括：盲搜单元、 第二判断单元和第三确定单元。
其中，所述盲搜单元用于在所述信道内的第二预设广播资源上进行盲搜；
所述第二判断单元用于根据盲搜结果判断是否存在预设序列；
所述第三确定单元用于当存在预设序列时，确定所述信道中承载有预设广播信号。
可选地，在本发明的一种具体实施方式中，所述第二预设广播资源对应于所述信道在每个传输时间间隔内的首个OFDM符号。
可选地，如图5所示，在本发明的一种具体实施方式中，所述数据传输装置还可以包括：判断模块510和第一确定模块520。
其中，所述判断模块510用于当所述信道中没有承载预设广播信号时，判断所述信道的能量值是否小于第二预设门限值；
所述第一确定模块520用于当所述信道的能量值小于第二预设门限值时，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据；当所述信道的能量值大于或等于第二预设门限值时，执行所述监听所述信道中是否承载有预设广播信号的步骤。
可选地，在本发明的一种具体实施方式中，所述数据传输装置还可以包括：指示发送模块，所述指示发送模块用于当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
可选地，在本发明的一种具体实施方式中，所述数据传输装置还可以包括：第二确模块和信号发送模块。
其中，所述第二确定模块用于当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；
所述信号发送模块用于在所述第三预设广播资源上发送预设广播信号。
如图6所示，所述用户设备(第一用户设备或第二用户设备)可以包括：处理器610、存储器620及收发器630等。除此之外，所述用户设备还可以包括输出模块、输入模块及传感器等组件，这些组件也可以通过一条或多条总线以总线形结构或星型结构等进行连接及通信。所述输出模块可以是显示屏、声音输出器和振动器等。所述输入模块可以是实体键盘、在所述显示屏上的虚拟键盘、话筒和摄像头等。所述传感 器可以导航仪、陀螺仪以及重力感应器等。
所述处理器610为用户设备的控制中心，利用各种接口和线路连接整个用户设备的各个部分，通过运行或执行存储在所述存储器620内的软件程序和/或模块，以及调用存储在所述存储器620内的数据，以执行用户设备的各种功能和/或处理数据。所述处理器610可以由集成电路(integrated circuit，简称IC)组成，例如可以由单颗封装的IC所组成，也可以由连接多颗相同功能或不同功能的封装IC而组成。举例来说，所述处理器610可以仅包括中央处理器(central processing unit，简称CPU)，也可以是图形处理器(graphics processing unit，简称GPU)、数字信号处理器(digital signal processor，简称DSP)、及所述收发器630中的控制芯片(例如基带芯片)的组合。在本发明实施方式中，CPU可以是单运算核心，也可以包括多运算核心。
所述收发器630用于建立通信信道，使用户设备通过所述通信信道以连接至接收设备，从而实现用户设备和接收设备之间的数据传输，所述接收设备可以是基站、用户设备等。所述收发器630可以包括无线局域网(wireless local area network，简称WLAN)模块、蓝牙模块、基带(base band)模块等通信模块，以及所述通信模块对应的射频(radio frequency，简称RF)电路，用于进行无线局域网络通信、蓝牙通信、红外线通信及/或蜂窝式通信系统通信，例如宽带码分多重接入(wideband code division multiple access，简称WCDMA)及/或高速下行封包存取(high speed downlink packet access，简称HSDPA)。所述收发器630用于控制用户设备中的各组件的通信，并且可以支持直接内存存取(direct memory access)。
在本发明的不同实施方式中，所述收发器630中的各种收发器630一般以集成电路芯片(integrated circuit chip)的形式出现，并可进行选择性组合，而不必包括所有收发器630及对应的天线组。例如，所述收发器630可以仅包括基带芯片、射频芯片以及相应的天线以在一个蜂窝通信系统中提供通信功能。经由所述收发器630建立的无线通信连接，例如无线局域网接入或WCDMA接入，所述用户设备可以连接至蜂窝网(cellular network)或因特网(Internet)。在本发明的一些可选实施方式中，所述收发器630中的通信模块，例如基带模块可以集成到所述处理器610中。射频电路用于信息收发或通话过程中接收和发送信号。例如，将基站的下行信息接收后，给所述处理器610处理；另外，将设计上行的数据发送给基站。通常，所述射频电路包括用于执行这些功能的公知电路，包括但不限于天线系统、射频收发机、一个或多个放大器、调谐器、一个或多个振荡器、数字信号处理器、编解码(codec)芯片组、用户身份模块(SIM)卡、所述存储器620等等。此外，射频电路还可以通过无线通信 与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(global system of mobile communication，简称GSM)、通用分组无线服务(general packet radio service，简称GPRS)、码分多址(code division multiple access，简称CDMA)、宽带码分多址(wideband code division multiple access，简称WCDMA)、高速上行行链路分组接入技术(high speed uplink packet access，简称HSUPA)、长期演进计划(long term evolution，简称LTE)、电子邮件、短消息服务(short messaging service，简称SMS)等。
其中，在本发明具体实施的过程中，所述处理器610用于通过所述收发器630向基站发送上行调度请求；通过所述收发器630接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；通过所述收发器630监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，通过所述收发器630在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
本领域的技术人员可以清楚地了解到本发明实施例中的技术可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解，本发明实施例中的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例或者实施例的某些部分所述的方法。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于系统及装置实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
以上所述的本发明实施方式，并不构成对本发明保护范围的限定。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (21)

  1. 一种数据传输方法，应用于第一用户设备，其特征在于，所述方法包括：
    向基站发送上行调度请求；
    接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；
    监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；
    当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
  2. 根据权利要求1所述的方法，其特征在于，所述上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同；
    控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，包括：
    控制所述第一用户设备在所述第一目标物理资源上传输数据。
  3. 根据权利要求1所述的方法，其特征在于，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据，包括：
    获取所述第二用户设备在所述信道中传输数据时的物理资源；
    在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；
    控制所述第一用户设备在所述第二目标物理资源上传输数据。
  4. 根据权利要求1所述的方法，其特征在于，监听所述信道中是否承载有预设广播信号，包括：
    获取所述信道内的第一预设广播资源上的能量值；
    判断所述第一预设广播资源上的能量值是否大于第一预设门限值；
    当所述第一预设广播资源上的能量值大于第一预设门限值时，确定所述信道中承载有预设广播信号。
  5. 根据权利要求4所述的方法，其特征在于，所述第一预设广播资源对应于所述信道内每预设数目连续资源块中首个资源块的首个正交频分复用OFDM符号。
  6. 根据权利要求1所述的方法，其特征在于，监听所述信道中是否承载有预设广播信号，包括：
    在所述信道内的第二预设广播资源上进行盲搜；
    根据盲搜结果判断是否存在预设序列；
    当存在预设序列时，确定所述信道中承载有预设广播信号。
  7. 根据权利要求6所述的方法，其特征在于，所述第二预设广播资源对应于所述信道在每个传输时间间隔内的首个OFDM符号。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，还包括：
    当所述信道中没有承载预设广播信号时，判断所述信道的能量值是否小于第二预设门限值；
    当所述信道的能量值小于第二预设门限值时，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据；
    当所述信道的能量值大于或等于第二预设门限值时，执行所述监听所述信道中是否承载有预设广播信号的步骤。
  9. 根据权利要求8所述的方法，其特征在于，还包括：
    当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
  10. 根据权利要求8所述的方法，其特征在于，还包括：
    当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；
    在所述第三预设广播资源上发送预设广播信号。
  11. 一种数据传输装置，其特征在于，所述装置包括：
    发送模块，用于向基站发送上行调度请求；
    接收模块，用于接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；
    监听模块，用于监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；
    控制模块，用于当所述信道中承载有预设广播信号时，控制所述第一用户设备在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
  12. 根据权利要求11所述的装置，其特征在于，所述接收模块接收的上行调度许可还用于指示所述信道内的第一目标物理资源，所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内，且所述第一目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源不同；
    所述控制模块具体用于控制所述第一用户设备在所述第一目标物理资源上传输数据。
  13. 根据权利要求11所述的装置，其特征在于，所述控制模块，包括：
    第一获取单元，用于获取所述第二用户设备在所述信道中传输数据时的物理资源；
    第一确定单元，用于在所述信道中确定和所述第二用户设备在所述信道中传输数据时利用的物理资源不同的第二目标物理资源，所述第二目标物理资源和所述第二用户设备在所述信道中传输数据时利用的物理资源在同一发送时间间隔TTI内；
    控制单元，用于控制所述第一用户设备在所述第二目标物理资源上传输数据。
  14. 根据权利要求11所述的装置，其特征在于，所述监听模块，包括：
    第二获取单元，用于获取所述信道内的第一预设广播资源上的能量值；
    第一判断单元，用于判断所述第一预设广播资源上的能量值是否大于第一预设门限值；
    第二确定单元，用于当所述第一预设广播资源上的能量值大于第一预设门限 值时，确定所述信道中承载有预设广播信号。
  15. 根据权利要求14所述的装置，其特征在于，所述第一预设广播资源对应于所述信道内每预设数目连续资源块中首个资源块的首个正交频分复用OFDM符号。
  16. 根据权利要求11所述的装置，其特征在于，所述监听模块，包括：
    盲搜单元，用于在所述信道内的第二预设广播资源上进行盲搜；
    第二判断单元，用于根据盲搜结果判断是否存在预设序列；
    第三确定单元，用于当存在预设序列时，确定所述信道中承载有预设广播信号。
  17. 根据权利要求16所述的装置，其特征在于，所述第二预设广播资源对应于所述信道在每个传输时间间隔内的首个OFDM符号。
  18. 根据权利要求11-17任一项所述的装置，其特征在于，还包括：
    判断模块，用于当所述信道中没有承载预设广播信号时，判断所述信道的能量值是否小于第二预设门限值；
    第一确定模块，用于当所述信道的能量值小于第二预设门限值时，确定所述信道空闲，并控制所述第一用户设备在所述信道中传输数据；当所述信道的能量值大于或等于第二预设门限值时，执行所述监听所述信道中是否承载有预设广播信号的步骤。
  19. 根据权利要求18所述的装置，其特征在于，还包括：
    指示发送模块，用于当所述第一用户设备完成数据传输时，向所述基站发送传输完成指示，以使所述基站将所述第一用户设备所占用的物理资源释放。
  20. 根据权利要求18所述的装置，其特征在于，还包括：
    第二确定模块，用于当所述第一用户设备传输数据时，确定所述信道内的第三预设广播资源；
    信号发送模块，用于在所述第三预设广播资源上发送预设广播信号。
  21. 一种用户设备，其特征在于，包括，处理器和收发器，所述处理器用于通过所述收发器向基站发送上行调度请求；通过所述收发器接收所述基站发送的上行调度许可，所述上行调度许可用于指示所述基站为所述第一用户设备分配的信道；通过所述收发器监听所述信道中是否承载有预设广播信号，所述预设广播信号由已接入所述基站的第二用户设备在所述信道中传输数据时所发送；当所述信道中承载有预设广播信号时，通过所述收发器在所述信道中和所述第二用户设备采用频分复用的方式传输数据。
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