WO2017035708A1 - Procédé et dispositif de transmission de données, station de base et équipement utilisateur - Google Patents

Procédé et dispositif de transmission de données, station de base et équipement utilisateur Download PDF

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Publication number
WO2017035708A1
WO2017035708A1 PCT/CN2015/088439 CN2015088439W WO2017035708A1 WO 2017035708 A1 WO2017035708 A1 WO 2017035708A1 CN 2015088439 W CN2015088439 W CN 2015088439W WO 2017035708 A1 WO2017035708 A1 WO 2017035708A1
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WIPO (PCT)
Prior art keywords
communication information
specific communication
unlicensed
unlicensed cell
time
Prior art date
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PCT/CN2015/088439
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English (en)
Chinese (zh)
Inventor
曾清海
张健
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580072107.XA priority Critical patent/CN107113817A/zh
Priority to PCT/CN2015/088439 priority patent/WO2017035708A1/fr
Publication of WO2017035708A1 publication Critical patent/WO2017035708A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, base station, and user equipment.
  • the exempted frequency resources include frequency bands for ISM (Industrial, Scientific and Medical, industrial, scientific, and medical).
  • ISM Industrial, Scientific and Medical
  • the technologies commonly used in the ISM-compatible frequency bands are mainly wireless communication technologies such as WiFi (Wireless Fidelity), Bluetooth, and Zigbee.
  • LTE-A Long Term Evolution-Advanced LA (Licensed Assisted Access)
  • LA Licensed Assisted Access
  • the carrier on the unlicensed frequency resource is used as an unlicensed cell, and the base station performs data transmission with the UE (User Equipment) through the unlicensed cell to more effectively utilize the unlicensed frequency resource and improve the available spectrum bandwidth of the user. Users provide better service.
  • the base station corresponding to the unlicensed cell Since the frequency corresponding to the unlicensed cell is an unlicensed frequency, there may be cases where other devices also use the frequency resource, and therefore the base station corresponding to the unlicensed cell needs to compete for the frequency resource.
  • the base station has the maximum time limit for occupying the frequency resource at a time. For example, after 10 ms, the base station must release resources and re-compete resources. This means that the frequency resource of the unlicensed cell is likely to be intermittent and available in time, and the base station preempts the frequency resource, and the frequency resource is preempted by other devices. Therefore, the exempted cell is available at the time and is not available at the time.
  • the unlicensed cell is in an available state; if the base station does not compete for the frequency resource, the unlicensed cell is in an unavailable state.
  • the base station cannot perform transmission of data such as synchronization signals, system information, and paging messages with the UE.
  • the base station when the unlicensed cell is After the unavailable state is converted to the available state, the base station immediately sends a synchronization signal to the UE through the unlicensed cell, so that the UE can synchronize with the unlicensed cell immediately after the unlicensed cell is converted from the unavailable state to the available state.
  • the base station Each time the base station preempts the frequency resource, it immediately sends the synchronization signal, and does not consider whether the UE misses the reception of the synchronization signal, and sends the synchronization signal unnecessarily, which undoubtedly causes huge system overhead. For example, if the UE does not lose downlink synchronization because the unlicensed cell is unavailable, then sending the synchronization signal to the UE by the base station is not only meaningless, but also causes system overhead.
  • the embodiment of the present invention provides a Data transmission method, device, base station and user equipment.
  • the technical solution is as follows:
  • a data transmission method comprising:
  • the specific communication information is additionally sent to the UE by the unlicensed cell currently in an available state;
  • the sending timing and the agreed number of the specific communication information are configured in advance by the base station and the UE.
  • the unlicensed cell includes at least one unlicensed channel
  • the detecting whether the unlicensed cell is converted from an unavailable state to an available state includes:
  • the Sending the specific communication information to the UE by using the unlicensed cell in the state including:
  • the specific communication information is additionally sent to the UE through the unlicensed channel;
  • one of the plurality of unlicensed channels is selected according to a configuration or an appointment rule, and the specific communication information is additionally sent to the UE by selecting an unlicensed channel.
  • the exempting by the current available state The cell additionally sends the specific communication information to the UE, including:
  • the specific communication information is additionally transmitted to the UE through the unlicensed channel.
  • the determining is in an unavailable state in the unlicensed cell Whether to miss the delivery timing of a specified number of specific communication information, including:
  • the information sending timer starts counting every time the specific communication information is successfully sent, and the timing period is a predetermined number of times of the sending period of the specific communication information, and the sending period is performed by the base station and the UE. Pre-configure or contract.
  • the determining is performed in an unavailable state in the unlicensed cell Whether to miss the delivery timing of the specified number of the specific communication information, including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number;
  • the time difference is greater than a predetermined number of times of the transmission period of the specific communication information, determining that the transmission timing of the predetermined number of the specific communication information is missed during the last time the unlicensed cell is in an unavailable state .
  • the determining whether to miss the last time the unlicensed cell is in an unavailable state includes:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number;
  • the exempting cell that is currently in an available state additionally sends the specific to the UE Communication information, including:
  • the synchronization signal is additionally transmitted to the UE through the unlicensed cell currently in an available state.
  • the specific communication information is system information or a paging message
  • the unlicensed cell that is currently in an available state is additional to the UE.
  • Sending the specific communication information including:
  • the system information is additionally sent to the UE by the unlicensed cell currently in an available state, in a first preset time window of the unlicensed cell, and before the next time the transmission opportunity of the system information arrives; or,
  • the paging message sending occasion is a paging message sending occasion of the specific UE.
  • the method further includes:
  • the specific communication information is a synchronization signal or system information
  • the timing is transmitted. Periodically transmitting the specific communication information through the unlicensed cell; or
  • the specific communication information is a synchronization signal or system information
  • after additionally transmitting the specific communication information recalculating the subsequent specific according to the time at which the specific communication information is additionally transmitted and the pre-configured or agreed-up specific communication information transmission period The timing of transmitting the communication information; periodically transmitting the specific communication information through the unlicensed cell according to the recalculated transmission opportunity.
  • the method further includes:
  • the unlicensed cell available indication is used to instruct the UE to determine whether to receive an appointment number of the specific communication information in the process that the unlicensed cell is in an unavailable state.
  • the method further includes:
  • the communication data is sent to the UE by using the first unlicensed channel of the unlicensed cell currently in an available state, where the unlicensed cell includes one or more Unlicensed channel;
  • the unlicensed cell If the unlicensed cell is in an available state, retransmitting, by the second unlicensed channel that has contend for the frequency resource in the unlicensed cell, the communication data that is not successfully received by the UE;
  • the frequency resources corresponding to each of the unlicensed channels are respectively contending, and when competing for the frequency resource corresponding to the at least one unlicensed channel, the third unlicensed channel that has contend for the frequency resource is used. Resending the communication data that the UE did not successfully receive to the UE;
  • all the unlicensed channels of the unlicensed cell share a set of HARQ (Hybrid Automatic Repeat reQuest) entities of the unlicensed cell, the first and second
  • HARQ Hybrid Automatic Repeat reQuest
  • a data transmission method comprising:
  • the specific communication information receiving operation is initiated;
  • the receiving occasion of the specific communication information is configured or agreed in advance by the base station and the UE.
  • the unlicensed cell available indication includes indication information of an unlicensed channel in an available state.
  • the determining is in an unavailable state in the unlicensed cell Whether to miss the reception timing of a specified number of specific communication information, including:
  • the information receiving timer starts counting every time the specific communication information is successfully received, and the timing period is a multiple of a predetermined number of transmission periods of the specific communication information, and the sending period is performed by the base station and the UE. Pre-configure or contract.
  • the determining is in an unavailable state in the unlicensed cell Whether to miss the reception timing of a specified number of specific communication information, including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number;
  • the time difference is greater than a predetermined number of times of the sending period of the specific communication information, determining that the number of the specified ones is missed during the last time the unlicensed cell is in an unavailable state The timing of receiving communication information.
  • the determining whether to miss the last time the unlicensed cell is in an unavailable state The timing of receiving a specified number of specific communication messages, including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number;
  • the paging message sending occasion is a paging message sending occasion of the UE.
  • the starting the specific communications information receiving operation includes:
  • the specific communication information After searching for the specific communication information, the specific communication information is received.
  • the method further includes:
  • the receiving failure indication of the communication data is fed back to the base station according to a HARQ timing relationship
  • the reception success indication of the communication data is fed back to the base station.
  • a data transmission apparatus comprising:
  • a detecting module configured to detect whether an unlicensed cell is converted from an unavailable state to an available state
  • a judging module configured to determine, when the unlicensed cell transitions from an unavailable state to an available state, whether a transmission timing of the specified number of specific communication information is missed during the last unavailable state of the unlicensed cell;
  • an information sending module configured to: if the sending opportunity of the specified number of specific communications information is missed during the unavailable state in the unlicensed cell, send the Specific communication information;
  • the sending timing and the agreed number of the specific communication information are configured or agreed in advance by the base station and the UE.
  • the unlicensed cell includes at least one unlicensed channel
  • the detecting module is configured to compete for frequency resources corresponding to each of the unlicensed channels respectively; when competing for at least one When the frequency resource corresponding to the channel is not authorized, it is determined that the unlicensed cell is converted from an unavailable state to an available state.
  • the information sending module is configured to: When the contention-free channel is one, the specific communication information is additionally sent to the UE through the unlicensed channel; when there are multiple unlicensed channels that are contending, multiple unlicensed channels are configured according to the configuration rule. One of the unlicensed channels is selected to additionally transmit the specific communication information to the UE by selecting an unlicensed channel.
  • the information sending module when the specific communication information is a synchronization signal, the information sending module is used to compete for Each of the unlicensed channels additionally transmits the specific communication information to the UE through the unlicensed channel.
  • the determining module is configured to determine whether the information sending timer expires; Determining, when the information sending timer expires, determining a transmission timing of missing an agreed number of the specific communication information during the last unavailable state of the unlicensed cell; wherein the information sending timer is successfully sent every time The timing is started after the specific communication information is described, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the transmission period is configured or agreed in advance by the base station and the UE.
  • the determining module when the specific communication When the information is the synchronization signal or the system information, the determining module is configured to acquire a first time corresponding to the current specified frame number, where the current specified frame number is a current system frame number, a current subframe number, and the current system frame number.
  • the determining module is configured to acquire a first time corresponding to the currently specified frame number, where The current specified frame number is a combination of the current system frame number, the current subframe number, the current system frame number, and the current subframe number; and the last paging message in the process that the unlicensed cell is in the available state last time is obtained.
  • the second time of the sending opportunity determining, according to the pre-configured or agreed paging message sending occasion, whether a predetermined number of sending times of the paging message occur in the time period from the second time to the first time Determining, at a time interval from the second time to the first time, that a predetermined number of the paging messages are sent, determining that the unlicensed cell is in an unavailable state last time The timing of the transmission of the agreed number of the paging messages is missed.
  • the information sending module is configured to convert the unlicensed cell from an unavailable state to Within one subframe after the available state, the synchronization signal is additionally transmitted to the UE through the unlicensed cell currently in an available state.
  • the information sending module when the specific communication information is system information or a paging message, the information sending module is configured to be used in the unlicensed cell
  • the system information is additionally sent to the UE by the unlicensed cell currently in an available state before a predetermined time window is reached, and the next time the transmission timing of the system information arrives; or when there is a waiting for transmission
  • the message is called, in the second preset time window of the unlicensed cell, and before the next transmission time of the paging message arrives, the unlicensed cell currently in the available state is additionally sent to the UE.
  • the paging message is configured to be used in the unlicensed cell
  • the system information is additionally sent to the UE by the unlicensed cell currently in an available state before a predetermined time window is reached, and the next time the transmission timing of the system information arrives; or when there is a waiting for transmission
  • the message is called, in the second preset time window of the unlicensed cell, and before the next transmission time of the paging message arrives, the unlicense
  • the paging message sending occasion is a paging message sending occasion of the specific UE.
  • the information sending module is further configured to: when the specific communication information is a synchronization signal or system information, After the communication information is determined, the specific communication information is periodically sent by the unlicensed cell according to a specific communication information transmission timing preset or agreed by the base station and the UE; or when the specific communication information is synchronized Signal or system information, after additionally transmitting the specific communication information, re-calculating the transmission timing of the subsequent specific communication information according to the time at which the specific communication information is additionally transmitted and the pre-configured or agreed-up specific communication information transmission period; The calculated transmission opportunity periodically transmits the specific communication information through the unlicensed cell.
  • the device further includes:
  • An available indication sending module configured to send an unlicensed cell available indication to the UE by the unlicensed cell currently in an available state when the unlicensed cell transitions from an unavailable state to an available state; or, when When the unlicensed cell is converted from the unavailable state to the available state, the unlicensed cell available indication is sent to the UE by other cells serving the UE; wherein the unlicensed cell available indication is used to indicate the UE Determining whether a predetermined number of reception times of the specific communication information are missed during the last time the unlicensed cell is in an unavailable state.
  • the device further includes:
  • a data sending module configured to send, by the first unlicensed channel that is currently in an available state, communication data to the UE after the unlicensed cell is converted from an unavailable state to an available state, where the The authorized cell includes one or more unlicensed channels;
  • the detecting module is configured to: if receiving the receiving failure indication of the communication data fed back by the UE, detecting whether the unlicensed cell is in an available state at a time of retransmitting the communication data next time;
  • the data sending module is configured to: if the unlicensed cell is in an available state, resend to the UE by using the second unlicensed channel that has contend for the frequency resource in the unlicensed cell that the UE is not successfully received.
  • the communication data if the unlicensed cell is in an unavailable state, respectively contending for the frequency resource corresponding to each of the unlicensed channels, and when competing for the frequency resource corresponding to the at least one unlicensed channel,
  • the third grant-free channel resends the communication data that the UE did not successfully receive to the UE;
  • all the unlicensed channels of the unlicensed cell share a set of HARQ entities of the unlicensed cell, and the first, second, and third unlicensed channels are the same or different exempted channels.
  • a data transmission apparatus comprising:
  • a judging module configured to: after receiving an unlicensed cell available indication sent by the base station, determine whether a receiving occasion of the specified number of specific communication information is missed during the last time the unlicensed cell is in an unavailable state;
  • An information receiving module configured to receive the specific communication information that is sent by the base station by using the unlicensed cell that is currently in an available state
  • the receiving occasion of the specific communication information and the agreed number are configured or agreed in advance by the base station and the UE.
  • the unlicensed cell available indication includes information of an unlicensed channel in an available state.
  • the determining module is configured to determine whether the information receiving timer expires; Determining, by the information receiving timer, that the receiving time of the specified number of the specific communication information is missed during the last time the unlicensed cell is in an unavailable state; wherein the information receiving timer is successfully received every time The specific communication information is started, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the transmission period is configured or agreed in advance by the base station and the UE.
  • the determining module when the specific communication information is the synchronization signal or the system information, the determining module is configured to acquire the first time corresponding to the currently specified frame number.
  • the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number; and a second time when the last successful reception of the specific communication information is obtained;
  • the determining module is configured to acquire a first time corresponding to the currently specified frame number, And the current specified frame number is a combination of a current system frame number, a current subframe number, the current system frame number, and the current subframe number; and obtaining a last page in the process that the unlicensed cell is in an available state last time a second time of the message sending occasion; determining, according to the pre-configured or agreed paging message receiving occasion, whether the receiving of the agreed number of the paging messages occurs within the time period from the second time to the first time If the receiving time of the predetermined number of the paging messages occurs in the time period from the second time to the first time, determining that the unlicensed cell is unavailable in the last time The timing of receiving a predetermined number of said paging messages is missed during the process;
  • the paging message sending occasion is a paging message sending occasion of the UE.
  • the starting module is configured to search for the specific communication information on the at least one unauthorized channel of the unlicensed cell; After the specific communication information is described, the specific communication information is received.
  • the device further includes:
  • a data receiving module configured to receive communication data that is sent by the base station by using the unlicensed cell that is currently in an available state
  • a receiving feedback module configured to: when the receiving the communication data fails, feed back, to the base station, a reception failure indication of the communication data according to a HARQ timing relationship;
  • a searching module configured to search for the retransmitted communication data on at least one available unlicensed channel of the unlicensed cell according to a HARQ timing relationship
  • the data receiving module is configured to receive the communication data after searching the communication data
  • the receiving feedback module is configured to feed back, to the base station, a reception success indication of the communication data if the communication data is successfully decoded.
  • a base station including: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory stores a program Code, the processor is used to invoke the program code, and performs the following operations:
  • the specific communication data is additionally sent to the UE by the unlicensed cell currently in an available state;
  • the sending timing and the agreed number of the specific communication information are configured or agreed in advance by the base station and the UE.
  • a sixth aspect provides a user equipment, including: a receiver, a transmitter, a memory, and a processor, wherein the receiver, the transmitter, and the memory are respectively connected to the processor, and the memory stores Program code, the processor is used to call the program code, and performs the following operations:
  • the specific communication information receiving operation is initiated;
  • the receiving occasion of the specific communication information is configured or agreed in advance by the base station and the UE.
  • the base station determines whether to additionally transmit the specific communication by determining whether the unlicensed cell is in the unavailable state or not, and whether to miss the transmission timing of the predetermined number of specific communication information. If the base station determines that the transmission timing of the predetermined number of specific communication information is missed, the specific communication information is additionally sent to the UE through the available unlicensed cell; if the base station determines that the transmission timing of the predetermined number of specific communication information is not missed, The problem that the UE may lose the downlink synchronization when the unlicensed cell is unavailable is solved, and the huge system overhead caused by the base station additionally sending the specific communication information to the UE after each competition to the unlicensed frequency resource is avoided. .
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention. Taking the perspective of the method performed by the base station as an example, referring to FIG. 1 , the method process provided by the embodiment of the present invention includes:
  • step 101 Detect whether the unlicensed cell is converted from an unavailable state to an available state. When the unlicensed cell transitions from the unavailable state to the available state, perform the following step 102.
  • step 103 When the unlicensed cell is converted from the unavailable state to the available state, determine whether the unlicensed cell is missed in the process of being unavailable, whether to miss the transmission timing of the specified number of specific communication information; if the unauthorized cell is not available at the time When the transmission timing of the predetermined number of specific communication information is missed during the state, the following step 103 is performed.
  • the sending timing and the number of appointments of the specific communication information are configured or agreed in advance by the base station and the UE.
  • the specific communication information is additionally sent to the UE by the unlicensed cell currently in the available state.
  • the agreed number is an integer greater than 1 or equal to 1. Additional communication information can be sent to the UE in the following manner:
  • the specific communication information is a synchronization signal
  • the extra-originating cell currently in the available state starts to be additionally sent to the UE.
  • the system information is additionally sent to the UE through the unlicensed cell currently in the available state in the first preset time window of the unlicensed cell, and before the next transmission timing of the system information arrives;
  • the specific communication information is a paging message and there is a paging message waiting to be sent, in the second preset time window of the unlicensed cell, and before the sending timing of the next paging message arrives, the current available state is exempted.
  • the authorized cell sends an additional paging message to the UE; wherein, when the paging message waiting to be sent is a paging message of a specific UE, the paging message sending occasion is a paging message sending occasion of the specific UE.
  • the base station when detecting that the unlicensed cell transitions from the unavailable state to the available state, determines whether to miss the transmission of the agreed number of specific communication information in the process that the unlicensed cell is in the unavailable state at one time.
  • Timing to decide whether to send specific communication information additionally if the base station determines that the transmission timing of the specified number of specific communication information is missed, the specific communication information is additionally sent to the UE through the available unlicensed cell; if the base station determines that the number of appointments has not been missed When the specific communication information is sent, the specific communication information is not additionally transmitted, and the problem that the UE may lose the downlink synchronization when the unlicensed cell is unavailable is solved, and the base station is prevented from additionally transmitting to the UE every time after competing for the unlicensed frequency resource.
  • the unlicensed cell includes an agreed number of unlicensed channels, and detecting whether the unlicensed cell is converted from an unavailable state to an available state, including:
  • the specific communication information is the system information or the paging message
  • the specific communication information is additionally sent to the UE by the unlicensed cell that is currently in the available state, including:
  • the specific communication information is additionally sent to the UE through the unlicensed channel; when there are multiple unlicensed channels that are contending, the multiple exempted channels are selected according to the configuration rule or convention.
  • the authorization channel additionally transmits specific communication information to the UE by selecting an unlicensed channel.
  • the specific communication information is a synchronization signal
  • the specific communication information is additionally sent to the UE by the unlicensed cell that is currently in an available state, including: sending, for each unlicensed channel that is contending, to the UE through the unlicensed channel.
  • Specific communication information is additionally sent to the UE by the unlicensed cell that is currently in an available state, including: sending, for each unlicensed channel that is contending, to the UE through the unlicensed channel.
  • the packet include:
  • the information sending timer starts timing after each successful sending of the specific communication information, and the timing period is a predetermined number of times of the sending period of the specific communication information, and the sending period is configured or agreed in advance by the base station and the UE.
  • determining whether to send the appointment number of the specific number of the specific communication information in the process that the unlicensed cell is in the unavailable state including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the time difference is greater than a predetermined number of times of the transmission period of the specific communication information, it is determined that the transmission timing of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state.
  • determining whether to transmit the scheduled number of specific communication information in the process that the unlicensed cell is in the unavailable state including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the sending timing of the agreed number of paging messages occurs during the time period from the second time to the first time, and then the sending timing of the missed number of paging messages is missed during the unavailable state of the unlicensed cell.
  • the specific communication information is a synchronization signal
  • the specific communication information is additionally sent to the UE by the unlicensed cell that is currently in an available state, including:
  • the unlicensed cell that was previously in an available state additionally transmits a synchronization signal to the UE.
  • the specific communication information is the system information or the paging message
  • the specific communication information is additionally sent to the UE by the unlicensed cell that is currently in the available state, including:
  • the system information is additionally sent to the UE through the unlicensed cell currently in the available state;
  • the paging is additionally sent to the UE by the unauthorized cell currently in the available state.
  • the paging message transmission timing is a paging message transmission timing of the specific UE.
  • the method further includes:
  • the specific communication information is the synchronization signal or the system information
  • the specific communication information is periodically sent through the unlicensed cell according to the specific communication information transmission timing preset or agreed by the base station and the UE; or, when When the specific communication information is the synchronization signal or the system information, after additionally transmitting the specific communication information, re-calculating the transmission timing of the subsequent specific communication information according to the timing of additionally transmitting the specific communication information and the pre-configured or agreed-up specific communication information transmission period; The recalculated transmission opportunity periodically transmits specific communication information through the unlicensed cell.
  • the method further includes:
  • the unlicensed cell currently in the available state is sent an unlicensed cell available indication to the UE;
  • the other cell serving the UE is sent an unlicensed cell available indication to the UE;
  • the unlicensed cell available indication is used to indicate to the UE whether to determine whether the unrecognized cell is in the unavailable state or not, and whether the subscription number of the specific communication information is missed.
  • the method further includes:
  • the communication data is sent to the UE by using the first unlicensed channel of the unlicensed cell currently in the available state, and the unlicensed cell includes one or more unlicensed channels;
  • the second grant channel resends the communication data that the UE does not successfully receive to the UE;
  • the unlicensed cell If the unlicensed cell is in the unavailable state last time, it competes for the frequency resource corresponding to each of the unlicensed channels, and when competing for the frequency resource corresponding to the at least one unlicensed channel, passes the third unlicensed channel that has contend for the frequency resource. Resending communication data that the UE did not successfully receive to the UE;
  • all the unlicensed channels of the unlicensed cell share a set of HARQ entities of the unlicensed cell, and the first, second, and third unlicensed channels are the same or different exempted channels.
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention. Taking the perspective of the UE performing the method as an example, referring to FIG. 2, the method process provided by the embodiment of the present invention includes:
  • step 202 After receiving the unlicensed cell available indication sent by the base station, determining whether the unrecognized cell is in the unavailable state, whether to miss the receiving occasion of the specified number of specific communication information; if the unlicensed cell is unavailable at the time
  • the following step 202 is performed when the reception timing of the predetermined number of specific communication information is missed during the state process.
  • the specific communication information receiving operation is initiated.
  • the receiving occasion of the specific communication information is configured or agreed in advance by the base station and the UE.
  • the UE determines whether to miss the reception of the specified number of specific communication information by using the same method as the base station. If the UE determines that the reception timing of the predetermined number of specific communication information is missed, the receiving operation of the specific communication information is initiated; if the UE determines that the receiving timing of the predetermined number of specific communication information is not missed, the receiving operation of the specific communication information is not initiated. , to avoid system overhead and waste of resources.
  • the unlicensed cell available indication includes information of an unlicensed channel in an available state.
  • determining whether to receive the subscription number of the specified number of specific communication information during the last time the unlicensed cell is in the unavailable state includes:
  • the information receiving timer starts timing after each successful receiving of the specific communication information, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the sending period is configured or agreed in advance by the base station and the UE.
  • the specific communication information is the synchronization signal or the system information, it is determined whether the number of times of receiving the specific communication information in the process of the unavailable state of the unlicensed cell is incorrect, including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the time difference is greater than a predetermined number of times of the transmission period of the specific communication information, it is determined that the reception opportunity of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state.
  • determining, when the unlicensed cell is in an unavailable state, whether to miss the receiving occasion of the specified number of specific communication information including:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the paging message is a paging message of the UE
  • the paging message is sent at the timing of the paging message of the UE.
  • initiating a specific communication information receiving operation including:
  • the specific communication information is searched, the specific communication information is received.
  • the method further includes:
  • the receiving failure indication of the communication data is fed back to the base station according to the HARQ timing relationship;
  • the reception success indication of the communication data is fed back to the base station.
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • the method flow provided by the embodiment of the present invention includes:
  • the base station periodically sends a synchronization signal to the UE by using an unlicensed cell.
  • the base station corresponding to the unlicensed cell needs to compete for the unlicensed frequency resource.
  • the base station competes for the exemption frequency by adopting LBT (Listen Before Talk). If the base station competes for the unlicensed frequency resource, the unlicensed cell is in an available state.
  • the base station periodically transmits a synchronization signal to the UE through an unlicensed cell in an available state.
  • the reason why the base station periodically sends the synchronization signal to the UE is that in the application of the mobile communication system, the UE must search for a suitable cell as soon as possible after starting the system, and then synchronize with the cell to reach the time slot and frequency to obtain the UE.
  • the detailed information of the cell realizes data transmission with the base station. That is, the UE can use the network service only after logging in to the cell.
  • the process from power-on search to login to a suitable cell is typically defined as the cell initial search process. Synchronization is a key step in the initial search process.
  • the period in which the base station sends the synchronization signal to the UE may be configured or agreed in advance by the base station and the UE, which is not specifically limited in this embodiment of the present invention.
  • the base station stops transmitting the synchronization signal.
  • the base station takes up the unlicensed frequency resource at one time. So the base station is occupying After the time of the unlicensed frequency resource reaches the maximum limit time, the unlicensed frequency resource must be released. After the base station releases the occupied unlicensed frequency resource, the unlicensed cell corresponding to the base station is converted from the available state to the unavailable state. After the unlicensed cell corresponding to the base station enters the unavailable state, the base station stops transmitting the synchronization signal due to the lack of the transmission medium of the synchronization signal.
  • the base station detects whether the unlicensed cell is converted from an unavailable state to an available state. When the unlicensed cell transitions from the unavailable state to the available state, the base station sends an unlicensed cell available indication to the UE.
  • the base station may re-take the LBT mode to compete for the unlicensed frequency resource. After the base station competes again for the unlicensed frequency resource, it is determined that the unlicensed cell is converted from the unavailable state to the available state.
  • the unlicensed cell corresponding to the base station can be divided into multiple channels. For example, if the bandwidth of the unlicensed cell is 80 MHz, it can be divided into four 20 MHz unlicensed channels.
  • the number of the unlicensed cells may be limited to four, five, or six, and the like, and is not specifically limited in this embodiment of the present invention, and may be determined by factors such as the bandwidth of the unlicensed cell.
  • the unlicensed cell available indication includes information of the unlicensed channel in an available state.
  • the following manner may be implemented: respectively competing for the frequency resource corresponding to each of the unlicensed channels.
  • the frequency resource corresponding to the at least one unlicensed channel is contending, it is detected that the unlicensed cell is converted from the unavailable state to the available state.
  • the synchronization signal may be additionally sent or sent to the UE.
  • the base station needs to send the unlicensed cell to the UE.
  • the indication is such that the UE knows the status of the exempted cell in time, and then decides whether to start the data receiving operation.
  • the unlicensed cell may use a character such as "available", such as "available”, or a special message that the base station has previously agreed with the UE.
  • the special message is representative of the cell, and the embodiment of the present invention provides an indication for the unlicensed cell.
  • the form is not specifically limited.
  • the unlicensed cell currently in the available state is sent an unlicensed cell available indication to the UE.
  • the unlicensed cell available indication is sent to the UE through the unlicensed channel.
  • the excluded channel may be selected from the plurality of available unlicensed channels according to the configuration rule (for example, the channel usage priority).
  • Authorized cell available indication Certainly, an unlicensed channel may be randomly selected from a plurality of available unlicensed channels to send an unlicensed cell available indication to the UE, which is not specifically limited in this embodiment of the present invention.
  • the unlicensed cell available indication is sent to the UE by other cells serving the UE.
  • the server refers to the primary serving cell in the case of carrier aggregation or dual connectivity in other cells of the UE.
  • the UE can communicate with two base stations simultaneously or in a time-sharing to increase the peak rate and throughput of the cell edge.
  • One of the primary base stations provides the S1-Mobile Management Entity Interface connection for the UE.
  • the primary base station also provides a primary serving cell, which is an authorized cell.
  • the other is a secondary base station, which is mainly used to provide additional radio resources for data transmission.
  • the base station in the embodiment of the present invention refers to the secondary base station.
  • the secondary base station provides a secondary cell, and the secondary cell is an unlicensed cell.
  • the base station determines, when the unlicensed cell is in an unavailable state, whether to miss the transmission timing of the predetermined number of synchronization signals; if the base station misses the transmission of the agreed number of synchronization signals in the process that the unlicensed cell is in an unavailable state at one time At the timing, the following step 305 is performed; if the base station does not miss the transmission timing of the predetermined number of synchronization signals during the time when the unlicensed cell is in the unavailable state, the processing flow ends.
  • the agreed number is an integer greater than or equal to 1.
  • the base station after the unlicensed cell is converted from the unavailable state to the available state, the base station does not immediately send the synchronization signal to the UE, but first determines whether the unlicensed cell is missed during the unavailable state. The timing of the transmission of a predetermined number of synchronization signals. If the transmission timing of the predetermined number of synchronization signals is missed, the synchronization signal is additionally transmitted. If the transmission timing of the predetermined number of synchronization signals is not missed, there is no need to additionally transmit the synchronization signal.
  • the base station may determine whether the unlicensed cell misses the transmission timing of the agreed number of synchronization signals during the unavailable state in the following two ways:
  • the base station determines whether the synchronization signal sending timer expires; if the synchronization signal sending timer expires, it determines that the transmission timing of the predetermined number of synchronization signals is missed during the last time the unlicensed cell is in the unavailable state.
  • the synchronization signal sending timer starts timing after each successful transmission of the synchronization signal, and timing The period is a predetermined number of times of the transmission period of the synchronization signal, which may be configured or agreed in advance by the base station and the UE.
  • the base station acquires the first time corresponding to the current specified frame number, and obtains the second time of the last successful transmission of the synchronization signal; calculates the time difference between the first time and the second time; and determines the time difference Whether it is greater than a predetermined number of times of the transmission period of the synchronization signal; if the time difference is greater than a predetermined number of times of the transmission period of the synchronization signal, determining that the base station misses the predetermined number of synchronization signals during the unavailable state of the unlicensed cell The timing of the transmission.
  • the current specified frame number is a combination of the current system frame number, the current subframe number, the current system frame number, and the current subframe number.
  • the first time and the second time are only used to distinguish between the time when the base station acquires the current specified frame number and the time when the base station successfully transmits the synchronization signal last time, and have no other special meaning.
  • the base station determines whether to additionally transmit the synchronization signal by determining whether to miss the transmission timing of the predetermined number of periodic synchronization signals.
  • the UE after receiving the unlicensed cell available indication sent by the base station, the UE also determines whether to initiate the synchronization signal receiving operation by using a similar method to the base station, and if the unlicensed cell is in the unavailable state, it is missed.
  • the receiving timing of the number of synchronization signals is agreed, the data receiving operation is started; if the receiving timing of the predetermined number of synchronization signals is not missed during the time when the unlicensed cell is in the unavailable state, the processing flow ends.
  • the specific mode is as follows: when the UE determines whether the subscription timing of the predetermined number of synchronization signals is missed during the unavailable state in the unlicensed cell, the specific manner is as follows:
  • the synchronization signal receiving timer expires; if the synchronization signal receiving timer expires, it is determined that the receiving timing of the predetermined number of synchronization signals is missed during the time when the unauthorized cell is in an unavailable state.
  • the synchronization signal receiving timer starts counting every time the synchronization signal is successfully received, and the timing period is a predetermined number of times of the transmission period of the synchronization signal.
  • the second method is: acquiring a first time corresponding to the current specified frame number; acquiring a second time when the synchronization signal is successfully received last time; calculating a time difference between the first time and the second time; determining whether the time difference is It is greater than the agreed number of times of the transmission period of the synchronization signal; if the time difference is greater than the agreed number of times of the transmission period of the synchronization signal, it is determined that the reception timing of the synchronization signal is missed during the time when the unlicensed cell is in the unavailable state.
  • the base station If the base station misses the sending occasion of the predetermined number of synchronization signals in the process that the unlicensed cell is in the unavailable state, the base station adds the UE to the UE through the unauthorized cell currently in the available state. Send a sync signal.
  • the base station detects that the unlicensed cell is converted from the unavailable state to the available state, and misses the transmission timing of the agreed number of synchronization signals in the process that the unlicensed cell is in the unavailable state, immediately passes the currently available unlicensed cell.
  • the UE additionally transmits a synchronization signal.
  • “immediately” refers to starting to additionally transmit a synchronization signal within one subframe after the unauthorized cell is switched from the unavailable state to the available state. Since the unlicensed cell is divided into multiple unlicensed channels, when the synchronization signal is additionally sent to the UE through the unlicensed cell, the following manner can be implemented:
  • the synchronization signal is additionally sent to the UE through the unlicensed channel; when there are multiple unlicensed channels that are contending, for each of the unlicensed channels that are contending, each of the exemptions is passed.
  • the channel additionally transmits a synchronization signal to the UE.
  • the base station since the base station periodically sends a synchronization signal to the UE, after the base station additionally transmits the synchronization signal, the base station may periodically pass the unlicensed cell according to the timing of the synchronization signal pre-configured or agreed by the base station and the UE. A synchronization signal is sent to the UE. Alternatively, after additionally transmitting the synchronization signal, the base station may further recalculate the transmission timing of the subsequent synchronization signal according to the timing of additionally transmitting the synchronization signal and the pre-configured or agreed synchronization signal transmission period; according to the recalculated transmission timing, periodically The synchronization signal is transmitted through the unlicensed cell. In a specific implementation, any one of the foregoing two manners may be used to send a subsequent synchronization signal, which is not specifically limited in this embodiment of the present invention.
  • the UE after receiving the available indication of the unlicensed cell, if the UE determines that the receiving time of the predetermined number of synchronization signals is missed during the unavailable state of the unlicensed cell, the UE starts the synchronization signal receiving operation. It is ready to receive the synchronization signal additionally transmitted by the base station.
  • the UE may be implemented by searching for a synchronization signal on at least one of the unlicensed channels of the unlicensed cell; and after receiving the synchronization signal, receiving the synchronization signal.
  • the base station when detecting that the unlicensed cell transitions from the unavailable state to the available state, determines whether to miss the transmission timing of the agreed number of synchronization signals in the process that the unlicensed cell is in the unavailable state at one time.
  • Determining whether to additionally send a synchronization signal if the base station determines that the transmission timing of the predetermined number of synchronization signals is missed, the synchronization signal is additionally sent to the UE through the available unlicensed cell; if the base station determines that the transmission of the predetermined number of synchronization signals is not missed At the timing, the synchronization signal is not additionally transmitted, and the problem that the UE may lose the downlink synchronization when the unlicensed cell is unavailable is solved, and the huge system caused by the base station additionally transmitting the synchronization signal to the UE after each competition to the unlicensed frequency resource is avoided. Overhead.
  • the UE side judges whether to miss the reception timing of the predetermined number of synchronization signals by the same method. Determining whether to start the receiving operation of the synchronization signal; if the UE determines that the receiving timing of the predetermined number of synchronization signals is missed, the receiving operation of the synchronization signal is started; if the UE determines that the receiving timing of the predetermined number of synchronization signals is not missed, the synchronization is not started.
  • the receiving operation of the signal further avoids the overhead of the system and the waste of resources.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention. Taking the system information transmitted between the base station and the UE as an example, referring to FIG. 4, the method process provided by the embodiment of the present invention includes:
  • the base station periodically sends system information to the UE by using an unlicensed cell.
  • the system information is divided into a MIB (Main Information Block) and various SIBs (System Information Blocks).
  • MIB and various SIBs are sent on a periodic basis, but their transmission periods may be different.
  • the MIB always transmits on a subframe with a subframe number of 0, and the scheduling period is 10 ms.
  • the initial HARQ version is transmitted in subframe 0 of the radio frame whose system frame number modulo 4 is 0, and the four HARQ versions are sequentially transmitted in subframe 0 of 4 consecutive system frames.
  • SIB1 is always transmitted in subframe 5 of the system frame whose system frame number modulo 2 is 0, and the scheduling period is 20 ms.
  • the initial HARQ version of SIB1 is transmitted in subframe 5 of the system frame whose system frame number modulo 8 is 0, and the four HARQ versions are sequentially transmitted in subframe 5 of the system frame in which four system frame numbers modulo 2 are 0.
  • the description of the system information in the embodiment of the present invention is applicable to the MIB and various SIBs, respectively.
  • the base station stops transmitting system information.
  • step 302 is the same as the implementation shown in step 302 in the foregoing embodiment, and details are not described herein again.
  • the base station detects whether the unlicensed cell is converted from an unavailable state to an available state. When the unlicensed cell is converted from the unavailable state to the available state, the base station sends an unlicensed cell available indication to the UE by using an unlicensed cell that is currently in an available state.
  • step 303 is the same as the implementation shown in step 303 in the foregoing embodiment, and details are not described herein again.
  • the base station determines, when the unlicensed cell is in an unavailable state, whether to miss the sending timing of the agreed number of system information; if the base station misses the sending of the agreed number of system information in the process that the unlicensed cell is unavailable in the last time At the timing, the following step 405 is performed; if the base station does not miss the transmission timing of the predetermined number of system information in the process that the unlicensed cell is in the unavailable state at one time, the processing flow ends.
  • step 304 is the same as the implementation shown in step 304 in the foregoing embodiment, and details are not described herein again.
  • the base station If the base station misses the agreed number in the process of being unavailable in the unlicensed cell once When the system information is sent, the base station additionally sends system information to the UE through the unlicensed cell that is currently in an available state.
  • the base station When the base station detects that the unlicensed cell is converted from the unavailable state to the available state, and misses the transmission timing of the agreed number of system information in the process that the unlicensed cell is in the unavailable state at one time, the base station is in the default time of the unlicensed cell. In the window, and before the next transmission timing of the system information arrives, the system information is additionally transmitted to the UE through the unlicensed cell currently in the available state.
  • the time window may be configured by the base station and the UE in advance, and may be a fixed size or a flexible size, which is not specifically limited in this embodiment of the present invention. Since the unlicensed cell is divided into multiple unlicensed channels, when the system information is additionally sent to the UE through the unlicensed cell, the following manner can be implemented:
  • the system information is additionally sent to the UE through the unlicensed channel; when there are multiple unlicensed channels that are contending, one of the plurality of unlicensed channels is selected according to the configuration rule.
  • the system information is additionally sent to the UE through the grant channel.
  • the system after receiving the available indication of the unlicensed cell, if the UE determines that the receiving time of the agreed number of system information is missed during the unavailable state of the unlicensed cell, the system starts the system information receiving operation. Prepare to receive additional system information sent by the base station.
  • the implementation manner of the synchronization signal receiving operation shown in step 305 above may be adopted by the UE when the system information receiving operation is started, and details are not described herein again.
  • the base station since the base station periodically sends the system information to the UE, after the base station additionally sends the system information, the base station may periodically pass the unlicensed cell according to the system information transmission timing preset or agreed by the base station and the UE. Send system information to the UE. Alternatively, after additionally transmitting the system information, the base station may recalculate the transmission timing of the subsequent system information according to the time of additionally transmitting the system information and the pre-configured or agreed system information transmission period; according to the recalculated transmission timing, periodically System information is transmitted through an unlicensed cell.
  • the system information may be sent by using any one of the foregoing two methods, which is not specifically limited in this embodiment of the present invention.
  • the base station when detecting that the unlicensed cell transitions from the unavailable state to the available state, determines whether to miss the transmission timing of the agreed number of system information in the process that the unlicensed cell is in the unavailable state at one time. Determining whether to additionally send system information; if the base station judges that the transmission timing of the agreed number of system information is missed, the system information is additionally transmitted to the UE through the available unlicensed cell; if the base station determines that the transmission timing of the agreed number of system information is not missed , the system information is not sent additionally, and the UE may not be able to receive the system in time when the unlicensed cell is unavailable.
  • the problem of unified information while avoiding the huge overhead caused by the base station to additionally send system information to the UE after each competition to the unlicensed frequency resource.
  • the UE side determines whether to miss the receiving occasion of the predetermined number of system information to determine whether to start the receiving operation of the system information by the same method; if the UE determines that the receiving timing of the agreed number of system information is missed, the system information is started to be received. If the UE determines that the receiving time of the agreed number of system information is not missed, the receiving operation of the system information is not started, and the overhead of the system and the waste of resources are further avoided.
  • FIG. 5 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • the method flow provided by the embodiment of the present invention includes:
  • the base station sends a paging message to the UE according to a specific rule by the unlicensed cell.
  • the specific rules are generated by the base station.
  • the base station acquires a special identification code on a SIM (Subscriber Identity Module) card of each UE, and the special identification code corresponding to each UE is fixed and unique.
  • the special identification code corresponding to each UE is divided by a positive integer of 4, 8, or the like; if the special identification code corresponding to a certain UE can divide the positive integer or the remainder into a specified value, a paging message is sent to the UE.
  • the specific rules may be other forms in addition to the above-mentioned forms, and the embodiment of the present invention does not specifically limit this.
  • the base station configures the sending timing of the paging message for the UE according to the specific rule. After the paging message is configured for the UE, the paging message can be sent to the UE according to the paging message sending occasion.
  • the base station stops sending the paging message.
  • step 302 is the same as the implementation shown in step 302 in the foregoing embodiment, and details are not described herein again.
  • the base station detects whether the unlicensed cell is converted from an unavailable state to an available state. When the unlicensed cell transitions from the unavailable state to the available state, the base station sends an unlicensed cell available indication to the UE.
  • step 303 is the same as the implementation shown in step 303 in the foregoing embodiment, and details are not described herein again.
  • the base station determines, when the unlicensed cell is in an unavailable state, whether to miss the sending occasion of the predetermined number of paging messages; if the base station misses the agreed number of paging messages in the process that the unlicensed cell is unavailable in the last time At the transmission timing, the following step 505 is performed; if the base station does not miss the transmission timing of the predetermined number of paging messages during the unavailable state of the unlicensed cell, the processing flow ends.
  • the base station after the base station is converted from the unavailable state to the available state by the unlicensed cell, instead of immediately sending a paging message to the UE, it first determines whether the transmission timing of the agreed number of paging messages is missed during the time when the unlicensed cell is in an unavailable state. If the transmission timing of the agreed number of paging messages is missed, an additional paging message is sent. If the transmission timing of the predetermined number of paging messages is not missed, there is no need to additionally send a paging message.
  • the base station may determine, in the following manner, whether the unlicensed cell misses the transmission timing of the agreed number of paging messages during the unavailable state:
  • the current specified frame number is a combination of the current system frame number, the current subframe number, the current system frame number, and the current subframe number.
  • the base station determines whether to additionally send a paging message by determining whether to miss the transmission timing of the agreed number of paging messages.
  • the UE after receiving the unlicensed cell available indication sent by the base station, the UE also determines whether to initiate the paging message receiving operation by using a method similar to the base station, if the unlicensed cell is in an unavailable state at the same time. If the receiving timing of the predetermined number of paging messages is missed, the data receiving operation is started; if the receiving timing of the agreed number of paging messages is not missed during the unavailable state of the unauthorized cell, the processing flow ends.
  • the receiving timing of the paging message may be determined by the UE according to the special identifier code on the SIM card, which is not specifically limited in this embodiment of the present invention.
  • the manner in which the reception timing is calculated according to the special identification code may be agreed in advance by the UE and the base station.
  • the specific mode is as follows: The UE determines whether to miss the receiving occasion of the predetermined number of paging messages in the process of the unavailable state in the unlicensed cell.
  • the paging message is a paging message of the UE
  • the paging message is sent at the timing of the paging message of the UE.
  • the base station If the base station misses the sending occasion of the agreed number of paging messages in the process that the unlicensed cell is in the unavailable state, the base station additionally sends the paging message to the UE by using the unlicensed cell that is currently in the available state.
  • the base station When the base station detects that the unlicensed cell is converted from the unavailable state to the available state, and misses the sending occasion of the agreed number of paging messages in the process that the unlicensed cell is in the unavailable state, when there is a paging message waiting to be sent, the base station additionally sends a paging message to the UE through the unlicensed cell currently in the available state.
  • the time window may be configured by the base station and the UE in advance, and may be a fixed size or a flexible size, which is not specifically limited in this embodiment of the present invention.
  • the system information sending manner shown in step 405 in the foregoing embodiment may be adopted. Narration.
  • the paging message transmission timing is a paging message transmission timing of the specific UE.
  • the UE after receiving the available indication of the unlicensed cell, the UE starts to receive the paging message if it determines that the receiving time of the agreed number of paging messages is missed during the unavailable state of the unlicensed cell. Operation, preparing to receive an additional paging message sent by the base station.
  • the UE may adopt the implementation manner of the synchronization signal receiving operation shown in step 305 above, and details are not described herein. It should be noted that, in order to save power and improve the probability that the UE correctly receives the paging message, the base station may send multiple times for the same paging message.
  • the base station when detecting that the unlicensed cell transitions from the unavailable state to the available state, determines whether to miss the transmission timing of the agreed number of paging messages in the process of the unlicensed cell being unavailable.
  • the UE side determines whether to miss the receiving occasion of the paging message by the same method to determine whether to initiate the receiving operation of the paging message; if the UE determines that the receiving timing of the agreed number of paging messages is missed, the paging is started.
  • the receiving operation of the message if the UE determines that the receiving occasion of the predetermined number of paging messages is not missed, the receiving operation of the paging message is not started, thereby further avoiding system overhead and waste of resources.
  • FIG. 6 is a flowchart of a data transmission method according to an embodiment of the present invention. Taking the communication data between the base station and the UE as an example, referring to FIG. 6, the method flow provided by the embodiment of the present invention includes:
  • the base station After the unlicensed cell transitions from the unavailable state to the available state, the base station sends the communication data to the UE by using the first unlicensed channel of the unlicensed cell that is currently in the available state.
  • the unlicensed cell corresponding to the base station may be divided into one or more channels. For example, if the bandwidth of the unlicensed cell is 80 MHz, it may be divided into four 20 MHz unlicensed channels. The four unlicensed channels share a set of HARQ entities of the unlicensed cell. The four unlicensed channels are all configured with resources for feedback data reception indication. That is, when the UE feeds back the data reception indication to the base station, it can be implemented by any one of the above four unlicensed channels.
  • the base station may use the LBT mode to compete for multiple channels in the process of competing for the unlicensed frequency resource. As long as the base station successfully contends to the frequency resource corresponding to an unlicensed channel, the unlicensed cell immediately Convert from unavailable state to available state.
  • the base station selects an available first unlicensed channel to transmit communication data to the UE according to pre-configured or agreed rules, such as channel usage priority.
  • the number of the unlicensed cells may be limited to four, five, or six, and the like, and is not specifically limited in this embodiment of the present invention, and may be determined by factors such as the bandwidth of the unlicensed cell.
  • the process in which the base station sends data to the UE through the first unlicensed channel may be referred to as HARQ initial transmission.
  • the UE If the UE fails to receive the communication data sent by the base station, the UE receives a reception failure indication of the communication data according to the HARQ timing relationship.
  • the UE After starting the communication data receiving operation, the UE receives the communication data sent by the base station through the unlicensed cell currently in an available state.
  • the UE may receive the communication data by searching for communication data on at least one of the unlicensed channels of the unlicensed cell, and receiving the communication data after searching for the communication data. If the communication data fails to be received, for example, the CRC (Cyclic Redundancy Check) check fails, the UE feeds back the communication data to the base station through the unlicensed cell at the time of feeding back the data reception indication to the base station according to the HARQ timing relationship. Receive failure indication.
  • CRC Cyclic Redundancy Check
  • the HARQ timing relationship means that if the base station sends communication data to the UE in the nth subframe, the UE will feed back to the base station in the n+th subframe. Data reception indication.
  • the base station sends an unlicensed channel used by the communication data to the UE, and the unlicensed channel used by the UE to feed back the data reception indication to the base station may be inconsistent.
  • the base station sends the communication data using the first unlicensed channel, and the UE feeds back the data reception indication to the base station to use the designated unlicensed channel except the first exempted channel.
  • the specified unlicensed channel may be specified by the base station, or may be obtained by the UE in the LBT mode according to the preset rule, which is not specifically limited in this embodiment of the present invention.
  • the base station After receiving the reception failure indication of the communication data fed back by the UE, the base station resends the communication data that the UE does not successfully receive through the available unlicensed channel.
  • the base station After receiving the reception failure indication of the communication data fed back by the UE, the base station detects whether the unlicensed cell is in an available state. According to the state of the unlicensed cell, the communication data that is not successfully received may be retransmitted to the UE in the following two manners.
  • the base station resends the communication data that the UE does not successfully receive to the UE through the second unlicensed channel that has contend for the frequency resource.
  • the base station uses the LBT mode for frequency resource competition for each of the unlicensed channels of the unlicensed cell.
  • the base station resends the communication data that the UE does not successfully receive to the UE through the third unlicensed channel that has contend for the frequency resource.
  • the base station may select among the plurality of available unlicensed channels according to the configuration rule, select a specific unlicensed channel as the third unlicensed channel, and resend the UE to the UE. Successfully received communication data.
  • all the unlicensed channels of the unlicensed cell share a set of HARQ entities of the unlicensed cell, and the first, second, and third unlicensed channels are the same or different exempted channels.
  • the process in which the base station retransmits the previously unsuccessfully received communication data to the UE may be referred to as HARQ retransmission.
  • the UE searches for communication data on at least one available unlicensed channel after detecting that the unlicensed cell is converted from the unavailable state to the available state. If the UE searches for the communication data and successfully decodes the communication data after receiving the communication data, the UE is in the priority one or the set is available at the time of feeding back the communication data reception indication to the base station according to the HARQ timing relationship.
  • the unlicensed channel used by the UE to feed back the data receiving indication to the base station may be specified by the base station, or may be obtained by the UE in the LBT mode, which is not specifically limited in this embodiment of the present invention.
  • feedback this time the data received successfully indicates the letter used.
  • the channel may be different from the channel used for the last feedback data reception failure indication.
  • the method provided by the embodiment of the present invention if the UE fails to receive the communication data sent by the base station, returns a reception failure indication of the communication data to the base station according to the HARQ timing relationship. After receiving the reception failure indication of the communication data fed back by the UE, the base station retransmits the communication data that the UE does not successfully receive through the available unlicensed channel.
  • the base station can independently compete for frequency resources for each of the unlicensed channels, and only needs to successfully compete for an unlicensed channel, and the base station can pass the The unlicensed cell and the UE perform data transmission, which solves the problem that the HARQ transmission and feedback are often interrupted due to the unavailability of the unlicensed cell, thereby affecting the transmission efficiency.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus provided by the present invention.
  • the data transmission device is applied to a base station.
  • the apparatus includes: a detection module 701, a determination module 702, and an information transmission module 703.
  • the detecting module 701 is connected to the determining module 702, and configured to detect whether the unlicensed cell is converted from an unavailable state to an available state.
  • the determining module 702 is connected to the information sending module 703, and is configured to convert the unlicensed cell from an unavailable state to an available state. In the state, it is determined whether the transmission time of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state; the information sending module 703 is configured to miss the appointment if the unlicensed cell is in the unavailable state at one time.
  • the number of transmission times of the specific communication information is additionally transmitted to the UE by the unlicensed cell currently in the available state; wherein the transmission timing and the number of appointments of the specific communication information are configured or agreed in advance by the base station and the UE.
  • the unlicensed cell includes at least one unlicensed channel
  • the detecting module is configured to respectively compete for the frequency resource corresponding to each of the unlicensed channels; when competing for the frequency resource corresponding to the at least one unlicensed channel, determining that the unlicensed cell is determined by The unavailable state is converted to an available state.
  • the information sending module is configured to: when the contention-free channel is one, use the unlicensed channel to additionally send the specific communication information to the UE; When there are multiple unlicensed channels, one of the plurality of unlicensed channels is selected according to the configuration rule, and the specific communication information is additionally transmitted to the UE by selecting the unlicensed channel.
  • the information sending module is configured to additionally send the specific communication information to the UE through the unlicensed channel for each of the unlicensed channels that are contending.
  • the determining module is configured to determine Whether the information sending timer expires; if the information sending timer expires, it determines the sending timing of missing the specified number of specific communication information in the unlicensed cell once in the unavailable state; wherein the information sending timer is successfully sent every time The timing is started after the specific communication information, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the transmission period is configured or agreed in advance by the base station and the UE.
  • the determining module is configured to acquire the first time corresponding to the current specified frame number, where the current specified frame number is the current system frame number, the current subframe number, and the current system frame. The combination of the number and the current subframe number; obtaining the second time of the last successful transmission of the specific communication information; calculating the time difference between the first time and the second time; determining whether the time difference is greater than the transmission period of the specific communication information If the time difference is greater than the agreed number of times of the transmission period of the specific communication information, it is determined that the transmission timing of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state.
  • the determining module is configured to obtain a first time corresponding to the current specified frame number, where the current specified frame number is the current system frame number or the current subframe number, the current system frame number, and The combination of the current subframe number; obtaining the second time when the last paging message is sent in the last available state of the unlicensed cell; determining the second time to the first according to the pre-configured or agreed paging message transmission timing Whether the scheduled number of paging messages is sent during the time period; the timing of the scheduled number of paging messages occurring during the second time to the first time is determined to be on the unlicensed cell. The timing of the missed appointment of a number of paging messages during an unavailable state.
  • the information sending module is configured to start to use the unlicensed cell currently in an available state to the UE in one subframe after the unlicensed cell is converted from the unavailable state to the available state. Additional sync signals are sent.
  • the information sending module is configured to be in the first preset time window of the unlicensed cell, and before the next time the system information is sent, the current information is The available state of the unlicensed cell additionally sends system information to the UE; or, when there is a paging message waiting to be sent, in the second preset time window of the unlicensed cell, and before the next paging message is sent, Sending a paging message to the UE by the unlicensed cell currently in an available state; wherein, when the paging message waiting to be sent is a paging message of a specific UE, the paging message is sent at a timing of sending a paging message of the specific UE .
  • the information sending module is further configured to: when the specific communication information is the synchronization signal or the system information, after the specific communication information is additionally sent, the specific communication information pre-configured or agreed according to the base station and the UE Sending timing, periodically transmitting specific communication information through the unlicensed cell; or, when the specific communication information is the synchronization signal or system information, after additionally transmitting the specific communication information, according to the time and pre-configuration or agreement of additionally transmitting the specific communication information
  • the specific communication information transmission period recalculates the transmission timing of the subsequent specific communication information; periodically transmits the specific communication information through the unlicensed cell according to the recalculated transmission timing.
  • the device further includes:
  • the available indication sending module is configured to: when the unlicensed cell is converted from the unavailable state to the available state, send an unlicensed cell available indication to the UE by the unlicensed cell currently in the available state; or, when the unlicensed cell is changed from the unavailable state When the state is in the available state, the unlicensed cell available indication is sent to the UE by the other cell serving the UE.
  • the unlicensed cell available indication is used to indicate to the UE whether to determine whether the number of the reserved number is missed during the unavailable state of the unlicensed cell. The timing of reception of specific communication information.
  • the device further includes:
  • a data sending module configured to send, by the first unlicensed channel of the unlicensed cell currently in an available state, communication data to the UE after the unlicensed cell is converted from the unavailable state to the available state, where the unlicensed cell includes one or more exemptions Authorized channel;
  • a detecting module configured to: if receiving the receiving failure indication of the communication data fed back by the UE, detecting whether the unlicensed cell is in an available state at the time of retransmitting the communication data next time;
  • a data sending module configured to: if the unlicensed cell is in an available state, resend the communication data that the UE does not successfully receive to the UE by using the second unlicensed channel that has contend for the frequency resource in the unlicensed cell; if the unlicensed cell is unavailable With the state, the frequency resources corresponding to each of the unlicensed channels are respectively contending, and when competing for the frequency resources corresponding to the at least one unlicensed channel, the UE is resent to the UE through the third unlicensed channel that has contend for the frequency resource. Communication data to;
  • the unlicensed cell shares a set of HARQ entities of the unlicensed cell, and the first, second, and third unlicensed channels are the same or different exempted channels.
  • the base station when detecting that the unlicensed cell transitions from the unavailable state to the available state, determines whether to miss the transmission of the specified number of specific communication information in the process of the unlicensed cell being in the unavailable state. Timing to decide whether to send specific communication information additionally; if the base station judges that the transmission timing of the specified number of specific communication information is missed, the specific communication information is additionally sent to the UE through the available unlicensed cell; if the base station determines that the specified number of specifics are not missed When the communication information is sent, no specific communication information is sent, which solves when the unlicensed cell is unavailable.
  • the UE may not be able to receive the problem of specific communication information, and at the same time avoid the huge overhead caused by the base station to additionally transmit specific communication information to the UE each time it competes for the unlicensed frequency resource.
  • the base station since an unlicensed cell is divided into an unlicensed channel capable of independently competing for frequency resources, the base station can independently compete for frequency resources for each of the unlicensed channels, and only needs to successfully compete for an unlicensed channel, and the base station can The data transmission by the unlicensed cell and the UE solves the problem that the HARQ transmission and feedback are often interrupted due to the unavailability of the unlicensed cell, thereby affecting the transmission efficiency.
  • FIG. 8 is a schematic structural diagram of a data transmission apparatus provided by the present invention.
  • the data transmission device is applied to the UE.
  • the apparatus includes: a determining module 801, a starting module 802, and an information receiving module 803.
  • the determining module 801 is connected to the initiating module 802, and is configured to determine, when the unlicensed cell is in the unavailable state, whether to miss the receiving occasion of the specified number of specific communications information after receiving the unlicensed cell available indication sent by the base station.
  • the initiating module 802 and the information receiving module 803 are configured to start a specific communication information receiving operation if the receiving time of the predetermined number of specific communication information is missed during the unavailable state of the unlicensed cell, and the information receiving module 803 uses And receiving, by the base station, specific communication information that is additionally sent by the unlicensed cell that is currently in an available state; wherein, the receiving occasion of the specific communication information is configured or agreed in advance by the base station and the UE.
  • the unlicensed cell available indication includes information of an unlicensed channel in an available state.
  • the determining module is configured to determine whether the information receiving timer expires; if the information receiving timer expires, determining that the unlicensed cell is in an unavailable state The timing of receiving the predetermined number of specific communication information is missed; wherein the information receiving timer starts counting every time the specific communication information is successfully received, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the transmission period is performed by the base station and the UE. Pre-configure or contract.
  • the determining module is configured to acquire the first time corresponding to the current specified frame number, where the current specified frame number is the current system frame number, the current subframe number, and the current system frame. Combination of the number and the current subframe number; obtaining the second time when the last successful reception of the specific communication information;
  • the number of appointments is determined to determine the reception timing of missing a predetermined number of specific communication information during the last time the unlicensed cell is in an unavailable state.
  • the determining module is configured to acquire a first time corresponding to the currently specified frame number, where the current specified frame number is a current system frame number, a current subframe number, a current system frame number, and The combination of the current subframe number; obtaining the second time when the last paging message is sent in the last available state of the unlicensed cell; determining the timing at the second time according to the pre-configured or agreed paging message reception timing Whether the receiving timing of the predetermined number of paging messages occurs in the time period; if the receiving timing of the agreed number of paging messages occurs in the time period from the second time to the first time, determining the unlicensed cell The receiving opportunity of the last number of paging messages is missed during the last unavailable state; wherein, when the paging message is the paging message of the UE, the paging message is sent at the timing of the paging message of the UE.
  • the startup module is configured to search for specific communication information on the at least one unauthorized channel of the unlicensed cell; after searching for the specific communication information, receive the specific communication information.
  • the device further includes:
  • a data receiving module configured to receive, by the base station, communication data sent by an unlicensed cell that is currently in an available state
  • a receiving feedback module configured to: when receiving the communication data fails, feed back, to the base station, a reception failure indication of the communication data according to the HARQ timing relationship;
  • a searching module configured to search for retransmitted communication data on at least one available unlicensed channel of the unlicensed cell according to the HARQ timing relationship
  • a data receiving module configured to receive the communication data after searching for the communication data
  • And receiving a feedback module configured to: if the communication data is successfully decoded, feed back a success indication of the communication data to the base station.
  • the apparatus provided by the embodiment of the present invention, after the UE receives the available indication of the unlicensed cell, and learns that the unlicensed cell transitions from the unavailable state to the available state, the UE determines whether to miss the specified number of specific communication information by using the same method as the base station side. Receive timing; if the UE determines that the reception timing of the predetermined number of specific communication information is missed, the receiving operation of the specific communication information is initiated; if the UE determines that the receiving timing of the predetermined number of specific communication information is not missed, the reception of the specific communication information is not initiated.
  • the operation avoids the overhead of the system and the waste of resources.
  • the UE can independently compete for frequency resources for each of the unlicensed channels, and only needs to successfully compete for an unlicensed channel, and the UE can Pass the exempted cell and base
  • the station performs data transmission, which solves the problem that the HARQ transmission and feedback are often interrupted due to the unavailability of the unlicensed cell, thereby affecting the transmission efficiency.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • a receiver 901, a transmitter 902, a memory 903, and a processor 904, the receiver 901, the transmitter 902, and the memory 903 are included.
  • the memory 903 stores program code
  • the processor 904 is configured to call the program code to perform the following operations:
  • the unlicensed cell Detecting whether the unlicensed cell is converted from the unavailable state to the available state; when the unlicensed cell is converted from the unavailable state to the available state, determining whether the agreed number of specific communications information is missed during the last time the unlicensed cell is in the unavailable state Sending time; if the transmission opportunity of the predetermined number of specific communication information is missed during the unavailable state in the unlicensed cell, the specific communication information is additionally sent to the UE through the unlicensed cell currently in the available state; wherein, the specific communication information
  • the transmission timing and the number of appointments are pre-configured or agreed by the base station and the UE.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the specific communication information is additionally sent to the UE through the unlicensed channel;
  • one of the plurality of unlicensed channels is selected according to the configuration rule, and the specific communication information is additionally sent to the UE by selecting the unlicensed channel.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the information sending timer starts timing after each successful sending of the specific communication information, and the timing period is a predetermined number of times of the sending period of the specific communication information, and the sending period is configured or agreed in advance by the base station and the UE.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the time difference is greater than a predetermined number of times of the transmission period of the specific communication information, it is determined that the transmission timing of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the sending timing of the agreed number of paging messages occurs during the time period from the second time to the first time, and then the sending timing of the missed number of paging messages is missed during the unavailable state of the unlicensed cell.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the synchronization signal is additionally transmitted to the UE through the unlicensed cell currently in the available state.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the system information is additionally sent to the UE through the unlicensed cell currently in an available state;
  • the paging is additionally sent to the UE by the unauthorized cell currently in the available state.
  • the paging message transmission timing is a paging message transmission timing of the specific UE.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the specific communication information is the synchronization signal or the system information
  • the specific communication information is periodically sent through the unlicensed cell according to the specific communication information transmission timing preset or agreed by the base station and the UE; or
  • the transmission timing of the subsequent specific communication information is recalculated according to the timing of additionally transmitting the specific communication information and the pre-configured or agreed-up specific communication information transmission period;
  • the specific communication information is periodically transmitted through the unlicensed cell according to the recalculated transmission opportunity.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the unlicensed cell currently in the available state is sent an unlicensed cell available indication to the UE;
  • the other cell serving the UE is sent an unlicensed cell available indication to the UE;
  • the unlicensed cell available indication is used to indicate to the UE whether to determine whether the unrecognized cell is in the unavailable state or not, and whether the subscription number of the specific communication information is missed.
  • processor 904 is further configured to invoke the program code to perform the following operations:
  • the communication data is sent to the UE by using the first unlicensed channel of the unlicensed cell currently in the available state, and the unlicensed cell includes one or more unlicensed channels;
  • the unlicensed cell If the unlicensed cell is in an available state, retransmitting the communication data that the UE does not successfully receive to the UE by using the second unlicensed channel that has contend for the frequency resource in the unlicensed cell;
  • the unlicensed cell If the unlicensed cell is in an unavailable state, it competes for the frequency resource corresponding to each of the unlicensed channels, and when competing for the frequency resource corresponding to the at least one unlicensed channel, The third unlicensed channel of the source resends the communication data that the UE does not successfully receive to the UE;
  • the unlicensed cell shares a set of HARQ entities of the unlicensed cell, and the first, second, and third unlicensed channels are the same or different exempted channels.
  • the base station determines whether to miss the transmission of the specified number of specific communication information in the process that the unlicensed cell is in the unavailable state.
  • Timing to decide whether to send specific communication information additionally if the base station judges that the transmission timing of the specified number of specific communication information is missed, the specific communication information is additionally sent to the UE through the available unlicensed cell; if the base station determines that the specified number of specifics are not missed When the communication information is sent, the specific communication information is not additionally transmitted, and the problem that the UE may not receive the specific communication information when the unlicensed cell is unavailable is solved, and the base station is prevented from each time after competing for the unlicensed frequency resource.
  • the base station can independently compete for frequency resources for each of the unlicensed channels, and only needs to successfully compete for an unlicensed channel, and the base station can The data transmission by the unlicensed cell and the UE solves the problem that the HARQ transmission and feedback are often interrupted due to the unavailability of the unlicensed cell, thereby affecting the transmission efficiency.
  • FIG. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the system includes: a receiver 1001, a transmitter 1002, a memory 1003, and a processor 1004.
  • the receiver 1001, the transmitter 1002, and the memory are provided.
  • 1003 is respectively connected to the processor 1004.
  • the memory 1003 stores program code, and the processor 1004 is configured to call the program code to perform the following operations:
  • the base station After receiving the unlicensed cell available indication sent by the base station, determining whether the unlicensed cell misses the receiving occasion of the specified number of specific communication information during the last unavailable state; if the unlicensed cell is in the unavailable state Receiving a specific communication information receiving operation in the case of missing a predetermined number of communication information; receiving a specific communication information additionally transmitted by the base station through an unlicensed cell currently in an available state; wherein, the receiving timing of the specific communication information is performed by the base station and the UE Pre-configure or contract.
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • the unlicensed cell available indication includes information of the unlicensed channel in an available state.
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • the information receiving timer starts timing after each successful receiving of the specific communication information, and the timing period is a predetermined number of times of the transmission period of the specific communication information, and the sending period is configured or agreed in advance by the base station and the UE.
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • the current specified frame number is a combination of a current system frame number or a current subframe number, a current system frame number, and a current subframe number;
  • the time difference is greater than a predetermined number of times of the transmission period of the specific communication information, it is determined that the reception opportunity of the predetermined number of specific communication information is missed during the last time the unlicensed cell is in the unavailable state.
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • the current specified frame number is a combination of a current system frame number, a current subframe number, a current system frame number, and a current subframe number;
  • the paging message is a paging message of the UE
  • the paging message is sent at the timing of the paging message of the UE.
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • processor 1004 is further configured to invoke the program code to perform the following operations:
  • the communication data fails to be received, the communication data is fed back to the base station according to the HARQ timing relationship. Receiving a failure indication;
  • the reception success indication of the communication data is fed back to the base station.
  • the UE determines whether to miss the specified number of specific communication information by using the same method as the base station side.
  • the receiving timing determines whether to initiate the receiving operation of the specific communication information; if the UE determines that the receiving opportunity of the predetermined number of specific communication information is missed, the receiving operation of the specific communication information is initiated; if the UE determines that the specified number of specific communication information is not missed At the receiving occasion, the receiving operation of the specific communication information is not started, and the overhead of the system and the waste of resources are further avoided.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

Selon des modes de réalisation, la présente invention concerne un procédé et un dispositif de transmission de données, une station de base et un équipement utilisateur (UE), et elle s'applique au domaine technique des communications. Le procédé consiste à : détecter si une cellule sans licence passe d'un état indisponible à un état disponible ; lorsque la cellule sans licence passe de l'état indisponible à l'état disponible, déterminer si un nombre convenu d'occasions d'envoi pour des informations de communication particulières sont manquées lors de la dernière fois où la cellule sans licence est indisponible ; si c'est le cas, envoyer en plus les informations de communication à un UE par l'intermédiaire de la cellule sans licence actuellement disponible. On détermine, en déterminant si un nombre convenu d'occasions d'envoi d'informations de communication particulières sont manquées lors de la dernière fois où une cellule sans licence est indisponible, s'il faut envoyer en plus les informations de communication ; les informations de communication sont envoyées en plus si les occasions d'envoi sont manquées ; ou autrement, les informations de communication ne pas envoyées en plus. Cela résout le problème selon lequel un UE peut manquer un nombre convenu d'occasions de réception pour des informations de communication particulières lorsqu'une cellule sans licence est indisponible, et évite les surdébits de systèmes élevés provoqués par d'autres envois des informations de communication particulières à chaque fois qu'une ressource de fréquence est obtenue à travers un conflit d'accès.
PCT/CN2015/088439 2015-08-28 2015-08-28 Procédé et dispositif de transmission de données, station de base et équipement utilisateur WO2017035708A1 (fr)

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CN110351898A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 非连续接收的通信方法、装置、通信设备和通信系统
CN112312544A (zh) * 2019-07-23 2021-02-02 海能达通信股份有限公司 通信方法、基站、用户设备和具有存储功能的装置
CN112312544B (zh) * 2019-07-23 2023-02-10 海能达通信股份有限公司 通信方法、基站、用户设备和具有存储功能的装置
CN112738845A (zh) * 2020-12-21 2021-04-30 北京邮电大学 Nr-u系统中用于harq反馈的单触发指示设计方法
CN112738845B (zh) * 2020-12-21 2022-09-30 北京邮电大学 Nr-u系统中用于harq反馈的单触发指示设计方法

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