WO2018028374A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
WO2018028374A1
WO2018028374A1 PCT/CN2017/092534 CN2017092534W WO2018028374A1 WO 2018028374 A1 WO2018028374 A1 WO 2018028374A1 CN 2017092534 W CN2017092534 W CN 2017092534W WO 2018028374 A1 WO2018028374 A1 WO 2018028374A1
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WO
WIPO (PCT)
Prior art keywords
base station
response message
uplink grant
command
module
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PCT/CN2017/092534
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English (en)
French (fr)
Inventor
陈中明
吴昱民
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中兴通讯股份有限公司
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Publication of WO2018028374A1 publication Critical patent/WO2018028374A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1845—Combining techniques, e.g. code combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • the present application relates to, but is not limited to, the field of communications, and more particularly to data transmission methods and apparatus.
  • a terminal In a Long Term Evolution (LTE) system, a terminal needs to transmit data (excluding non-adaptive retransmission) on a Physical Uplink Shared Channel (PUSCH), and obtains a valid uplink grant allocated by the base station. It can be dynamically configured on a Physical Downlink Control Channel (PDCCH) or a random access response, or semi-statically configured, including at which time and at which frequency the terminal can transmit data, and the modulation and coding scheme used. After the terminal obtains the uplink grant allocated by the base station, the terminal can send the uplink data on the specified time-frequency domain resource.
  • PDCCH Physical Downlink Control Channel
  • the terminal After the terminal obtains the uplink grant allocated by the base station, the terminal can send the uplink data on the specified time-frequency domain resource.
  • the Medium Access Control (MAC) layer needs to obtain related Hybrid Automatic Repeat reQuest (HARQ) information from the physical layer.
  • HARQ Hybrid Automatic Repeat reQuest
  • TTI Transmission Time Interval
  • the HARQ entity determines a HARQ process for the transmission to occur.
  • the HARQ entity also sends the HARQ feedback or negative (Acknowledgement/Negative Acknowledgement, ACK/NACK for short), the Modulation and Coding Scheme (MCS) and the resource information to the corresponding HARQ process.
  • MCS Modulation and Coding Scheme
  • FIG. 1 is a schematic diagram of a subframe for uplink HARQ synchronization.
  • each uplink data carries a redundancy version (Redundancy Version, RV for short).
  • RV Redundancy Version
  • the data is The transmitted RV uses 0, 2, 3, and 1 in order.
  • FIG. 2 is a flowchart of a handover method.
  • the user plane resets (including MAC layer reset and packet data).
  • the target cell is randomly accessed by using the integrity protection algorithm and the ciphering algorithm of the target cell.
  • the UE obtains an uplink grant through the random access response, and can provide the target cell.
  • the handover completion response is sent, after which the UE can communicate with the target cell (point B in Figure 2).
  • the UE performs a random access procedure in the target cell, it needs to disconnect the data communication with the source cell. Between point A and point B, the UE cannot communicate with the source cell and the target cell normally, which is called the interruption time of the handover. This interruption time is the time occupied by the random access procedure, that is, the start and completion of the random access. Time between.
  • the dual-connected terminal can maintain data connection with more than two network nodes at the same time, and has control connection with only one network node.
  • One network node is a macro base station called MeNB, and the other network node is a small cell base station called SeNB.
  • MeNB macro base station
  • SeNB small cell base station
  • Embodiments of the present invention provide a data transmission method and apparatus, so as to target no random access
  • the switching process enables the terminal to learn and use the configured uplink authorization.
  • a data transmission method including:
  • the user equipment UE receives the handover command sent by the first base station or replaces the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization configured by the second base station for the UE;
  • the UE sends a response message to the second base station on the configured uplink grant.
  • the sending, by the UE, the response message to the second base station on the configured uplink authorization includes: sending, by the UE, the response message on the configured uplink grant, using a redundancy version RV Is 0.
  • the method further includes: decoding, by the second base station, the response message In the case that the UE retransmits the response message to the second base station on the configured uplink grant, the RV is 0.
  • the method further includes: successfully decoding, by the second base station, the response message.
  • the UE receives the PDCCH scheduling delivered by the second base station, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the method further includes: when the new transmission and the retransmission are required at the same time, the UE preferentially performs retransmission on the configured uplink authorization.
  • the uplink authorization in the case that the PDCCH scheduling sent by the second base station is received, the uplink authorization is in a failed state.
  • the method further includes: the UE receiving a command to cancel the uplink authorization, where the command is sent by the second base station; and the UE cancels the uplink authorization.
  • a data transmission method including:
  • the uplink grant is configured by the second base station for the UE, and the uplink grant carries the handover command received by the UE from the first base station or Replace the replacement command of the small cell base station.
  • the method after receiving the response message sent by the UE on the uplink grant, the method further includes: decoding the response message; and if the response message is successfully decoded, determining to receive the Response message.
  • the method further includes: transmitting, to the UE, a physical downlink control channel PDCCH scheduling, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the uplink grant is in a failed state.
  • the method further includes: sending, by the UE, a command to cancel the uplink authorization, to instruct the UE to cancel the uplink authorization.
  • the method further includes: when the decoding of the response message fails, buffering the response message; receiving the UE The response message retransmitted on the configured uplink grant.
  • the method further includes: re-recoding the response message; In the case that the response message fails to be decoded, the previously buffered response message and the currently received response message are combined and decoded again.
  • a data transmission method including:
  • a data transmission apparatus including:
  • the first receiving module is configured to receive a handover command sent by the first base station or a replacement command of the small cell base station, where the handover command and the replacement command carry an uplink authorization configured by the second base station for the UE;
  • the first sending module is configured to send a response message to the second base station on the configured uplink grant.
  • the first sending module is further configured to send the response message on the configured uplink grant, using a redundancy version RV of 0.
  • the device further includes:
  • the first retransmission module is configured to: when the second base station fails to decode the response message, retransmit the response message to the second base station on the configured uplink grant, and adopt an RV of 0.
  • the device further includes:
  • the second receiving module is configured to: when the second base station successfully decodes the response message, receive a PDCCH scheduling that is sent by the second base station, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the device further includes:
  • the second retransmission module is configured to preferentially perform retransmission on the configured uplink grant in the case that both new transmission and retransmission are required.
  • a data transmission apparatus for a base station, including:
  • a third receiving module configured to receive a response message sent by the user equipment UE on the uplink grant, where the uplink grant is configured by the second base station for the UE, and the uplink grant is carried by the UE from the first base station Receiving the handover command or replacing a replacement command of a small cell base station.
  • the device further includes:
  • a first decoding module configured to decode the response message
  • a determining module is configured to determine that the response message is received if the response message is successfully decoded.
  • the device further includes:
  • a second sending module configured to send a PDCCH scheduling to the UE, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the device further includes:
  • a cache module configured to cache the response message if the response message fails to be decoded
  • the fourth receiving module is configured to receive the response message that is retransmitted by the UE on the configured uplink grant.
  • the device further includes:
  • a second decoding module configured to re-recode the response message
  • the third decoding module is configured to, after re-synchronizing the response message, combine the previously buffered response message with the currently received response message and perform decoding again.
  • a data transmission apparatus which is applied to a base station, and includes:
  • An obtaining module configured to obtain an uplink authorization configured by the second base station for the user equipment UE;
  • a third sending module configured to send a handover command to the UE or replace a replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization, where the handover command is used by the
  • the UE sends a response message to the second base station on the configured uplink grant.
  • a computer readable storage medium storing computer executable instructions, the computer executable instructions being implemented by a processor to implement the data transfer method.
  • the user equipment UE receives the handover command sent by the first base station or replaces the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink configured by the second base station for the UE.
  • Authorizing; the UE sends a response message to the second base station on the configured uplink grant, in the handover process without random access, enabling the terminal to utilize the configured uplink grant well, reducing or avoiding handover interruption time.
  • 1 is a schematic diagram of a subframe of uplink HARQ synchronization
  • FIG. 3 is a flowchart 1 of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a second flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a block diagram 1 of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 6 is a block diagram 2 of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 7 is a block diagram 1 of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 8 is a block diagram 3 of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a frame carrying an uplink grant according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a SeNB change process according to an embodiment of the present invention.
  • FIG. 11 is a flowchart 1 of a handover procedure according to an embodiment of the present invention.
  • Figure 12 is a flow chart 2 of a handover procedure in accordance with an embodiment of the present invention.
  • FIG. 3 is a flowchart 1 of a data transmission method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • step S302 the user equipment UE receives the handover command sent by the first base station or replaces the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization configured by the second base station for the UE.
  • Step S304 The UE sends a response message to the second base station on the configured uplink grant.
  • the sending, by the UE, the response message to the second base station on the configured uplink authorization includes: sending, by the UE, the response message on the configured uplink grant, using a redundancy version RV of 0.
  • the UE after the UE sends the response message to the second base station on the configured uplink grant, if the second base station fails to decode the response message, the UE is configured on the uplink grant. The response message is retransmitted to the second base station, and the RV is 0.
  • the method further includes: if the second base station successfully decodes the response message, the UE receives The PDCCH scheduling delivered by the second base station, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the UE in the case that both new transmission and retransmission are required, the UE preferentially retransmits on the configured uplink authorization.
  • the uplink authorization in the case that the PDCCH scheduling sent by the second base station is received, the uplink authorization is in a failed state.
  • the UE receives a command to cancel the uplink authorization, where the command is sent by the second base station; the UE cancels the uplink authorization.
  • the embodiment of the present invention further provides a data transmission method, including: receiving a response message sent by the user equipment UE on an uplink grant, where the uplink grant is configured by the second base station for the UE, and the uplink grant is carried in the The UE receives the handover command from the first base station or replaces the replacement command of the small cell base station.
  • the method after receiving the response message sent by the UE on the uplink grant, the method further includes: decoding the response message; and determining that the response message is received if the response message is successfully decoded.
  • the physical downlink control channel PDCCH scheduling is sent to the UE, where the PDCCH scheduling is used to schedule the UE for data transmission.
  • the uplink grant is in a failed state.
  • a command to cancel the uplink authorization is sent to the UE, to indicate that the UE cancels the uplink authorization.
  • the response message is buffered; and the response that the UE retransmits on the configured uplink grant is received. Message.
  • the response message is re-decoded; if the response message fails to be decoded again, The previously buffered response message is merged with the currently received response message and decoded again.
  • FIG. 4 is a second flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S402 Acquire an uplink authorization configured by the second base station for the user equipment UE.
  • Step S404 Send a handover command to the UE or replace the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization, where the handover command is used by the UE on the configured uplink authorization.
  • the second base station sends a response message.
  • FIG. 5 is a block diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • the first receiving module 52 is configured to receive a handover command sent by the first base station or a replacement command of the small cell base station, where the handover command and the replacement command carry an uplink authorization configured by the second base station for the UE;
  • the first sending module 54 is configured to send a response message to the second base station on the configured uplink grant.
  • the first sending module is configured to send the response message on the configured uplink grant, and the redundancy version RV is 0.
  • the apparatus further includes: a first retransmission module, configured to, when the second base station fails to decode the response message, to the second base station on the configured uplink grant The response message is transmitted, and the RV is 0.
  • a first retransmission module configured to, when the second base station fails to decode the response message, to the second base station on the configured uplink grant The response message is transmitted, and the RV is 0.
  • the apparatus further includes: a second receiving module, configured to receive a PDCCH scheduling delivered by the second base station, where the second base station successfully decodes the response message, where the PDCCH scheduling Used to schedule the UE for data transmission.
  • the apparatus further includes: a second retransmission module, configured to preferentially perform retransmission on the configured uplink grant in the case that both new transmission and retransmission are required.
  • a second retransmission module configured to preferentially perform retransmission on the configured uplink grant in the case that both new transmission and retransmission are required.
  • FIG. 6 is a block diagram 2 of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
  • the third receiving module 62 is configured to receive a response message sent by the user equipment UE on the uplink grant, where the uplink grant is configured by the second base station for the UE, and the uplink grant carries the UE received by the UE from the first base station. Switch the command or replace the replacement command of the small cell base station.
  • FIG. 7 is a block diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus further includes:
  • the first decoding module 72 is configured to decode the response message
  • the determining module 74 is configured to determine that the response message is received if the response message is successfully decoded.
  • the apparatus further includes: a second sending module, configured to send a physical downlink control channel PDCCH scheduling to the UE, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • a second sending module configured to send a physical downlink control channel PDCCH scheduling to the UE, where the PDCCH scheduling is used to schedule the UE to perform data transmission.
  • the apparatus further includes:
  • a cache module configured to cache the response message if the response message fails to be decoded
  • the fourth receiving module is configured to receive the response message retransmitted by the UE on the configured uplink grant.
  • the apparatus further includes:
  • a second decoding module configured to re-decode the response message
  • a third decoding module configured to, in the case of failing to decode the response message again, The pre-cached response message is merged with the currently received response message and decoded again.
  • FIG. 8 is a block diagram 3 of a data transmission device according to an embodiment of the present invention. As shown in FIG.
  • the obtaining module 82 is configured to obtain an uplink authorization configured by the second base station for the user equipment UE.
  • the third sending module 84 is configured to send a handover command to the UE or replace the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization, where the handover command is used by the UE in the configuration.
  • the uplink grant sends a response message to the second base station.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code for performing the following steps:
  • step S1 the user equipment UE receives the handover command sent by the source base station or replaces the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization configured by the target base station for the UE.
  • Step S2 The UE sends a response message to the target base station on the configured uplink grant.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a variety of media that can store program code.
  • FIG. 9 is a schematic diagram of a frame carrying an uplink grant according to an embodiment of the present invention.
  • the terminal and the base station perform uplink data transmission and reception according to the following rules: after the terminal completes the processing of the handover command or the reconfiguration command, the configured uplink authorization The transmission completes the response, and the RV is 0. If the retransmission needs to be sent on the configured uplink grant, the RV also adopts 0.
  • both new transmission and retransmission are required, and then retransmission is performed first.
  • the base station detects the data sent by the terminal, and performs decoding first. If the decoding fails, it is combined with the previously received data and then decoded. After the base station correctly decodes the handover complete response message, the base station can perform the new transmission and the configured uplink grant through the PDCCH scheduling terminal. After the base station correctly decodes the handover complete response message, the base station sends the PDCCH scheduling, and the terminal receives the scheduling and cancels the configuration.
  • the uplink authorization is performed, or the base station sends a command to cancel the uplink authorization, and after receiving the terminal, the configured uplink authorization is cancelled.
  • Cell 1 home base station 1.
  • Cell 2 is a neighboring cell of cell 1, and home base station 2 is a small cell.
  • the cell 3 is a neighboring cell of the cell 1, and the home base station 3 is a small cell.
  • the terminal currently accesses cell 1, and cell 1 is in a connected state.
  • FIG. 10 is a flowchart of a SeNB change process according to an embodiment of the present invention.
  • the terminal is further configured with a cell 2, and the terminal aggregates between the cell 1 and the cell 2 through a dual connection.
  • Step S1001 the base station 1 determines to change the cell 2 of the UE to the cell 3 according to the terminal capability, the measurement report of the terminal, and the load of the cell 3.
  • step S1002 the cell 1 acquires the uplink grant configuration information on the cell 3 through the interaction with the cell 3, and notifies the terminal by the change command of the SeNB (such as RRC reconfiguration), and deletes the cell 2 to add the cell 3.
  • the change command of the SeNB such as RRC reconfiguration
  • step S1003 the terminal receives the command to replace the SeNB, where the command carries the uplink grant of the new SeNB.
  • step S1005 the terminal completes the processing of the command, and sends a response message to the base station 1 (such as RRC reconfiguration complete), because it is a new transmission, and the RV is 0.
  • step S1006 the base station 1 receives the uplink data sent by the terminal, performs decoding first, and successfully decodes the message, confirms that the received terminal responds (such as RRC reconfiguration complete), and notifies the base station 3 that the terminal has completed the replacement of the SeNB.
  • the terminal is scheduled to be transmitted through the PDCCH, and the terminal transmits data on the uplink grant.
  • the base station 3 receives the padding data sent by the terminal, and starts scheduling the terminal through the PDCCH.
  • Step S1008 The terminal receives the PDCCH scheduling of the base station 3;
  • step S1009 the configured uplink authorization is invalid.
  • the base station 3 receives the padding data sent by the terminal, starts scheduling the terminal through the PDCCH, and can select only one to execute.
  • the configured uplink authorization can be used to send padding or data.
  • FIG. 11 is a flowchart 1 of a handover process according to an embodiment of the present invention. As shown in FIG. 11, the method includes the following steps:
  • Step S1101 The source base station decides to let the UE switch to the target base station according to the terminal capability, the measurement report of the terminal, and the load of the target base station.
  • Step S1102 Acquire uplink authorization configuration information on the target base station by interacting with the target base station, and notify the terminal by using a handover command.
  • the target base station attempts to receive data sent by the terminal according to the configured uplink grant.
  • the target base station does not receive the data sent by the terminal and does not process it.
  • Step S1106 The target base station receives the uplink data sent by the terminal, performs decoding first, and successfully decodes the message, and acknowledges the message received by the terminal (such as the handover completion), and starts scheduling the terminal through the PDCCH.
  • Step S1107 The terminal receives the PDCCH scheduling of the target base station, and the configured uplink authorization fails.
  • the configured uplink authorization may be used to send padding or data.
  • step S1107 the base station sends a command to cancel the uplink authorization, and after receiving the uplink authorization, the terminal cancels the configured uplink authorization.
  • FIG. 12 is a second flowchart of a handover process according to an embodiment of the present invention. As shown in FIG. 12, the method includes the following steps:
  • the RV adopts 0, which may be the default rule, or the base station 1 notifies the terminal through the RRC configuration.
  • Step S1201 The source base station determines, according to the terminal capability, the measurement report of the terminal, and the load of the target base station, that the UE is handed over to the target base station;
  • Step S1202 The interaction between the source base station and the target base station acquires uplink authorization configuration information on the target base station.
  • step S1203 the source base station notifies the terminal by using a handover command.
  • the target base station attempts to receive data sent by the terminal according to the configured uplink grant.
  • the base station does not receive the data sent by the terminal and does not process it.
  • Step S1206 The target base station receives the uplink data sent by the terminal, performs decoding first, fails to decode, and caches the data.
  • step S1207 the target base station responds to the terminal with a NACK.
  • Step S1209 The target base station receives the uplink data sent by the terminal, performs decoding first, fails to decode, combines with the previously received data, and then decodes, and the decoding succeeds, and acknowledges that the response sent by the terminal is received (for example, the handover is completed). Start scheduling the terminal through the PDCCH.
  • Step S1210 The terminal receives the PDCCH scheduling of the target base station, and the configured uplink authorization fails.
  • the configured uplink authorization may be used to send padding or data.
  • the base station may also be configured to send the retransmission on the configured uplink grant, and the RV is in the order of 0, 2, 3, and 1.
  • the terminal performs retransmission with an RV of 2.
  • the terminal has new transmission and retransmission on the configured uplink authorization, and can be avoided by configuration.
  • the configured uplink authorization period information is greater than 8, or is not 8. Multiples and more.
  • the modules or steps of the above embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices, which may be implemented by computing devices.
  • the executed program code is implemented such that they can be stored in a storage device by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be
  • Each of the integrated circuit modules is fabricated separately, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • the UE receives the handover command sent by the first base station or replaces the replacement command of the small cell base station, where the handover command and the replacement command carry the uplink authorization configured by the second base station for the UE;
  • the UE sends a response message to the second base station on the configured uplink grant.
  • the terminal can make good use of the configured uplink grant, and reduce or avoid the handover interruption time.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本文公布一种数据传输方法及装置，其中，该方法包括：用户设备UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，该切换命令和所述更换命令中携带有第二基站为该UE配置的上行授权；该UE在配置的该上行授权上向该第二基站发送响应消息。

Description

数据传输方法及装置 技术领域
本申请涉及但不限于通信领域，尤指数据传输方法及装置。
背景技术
长期演进(LTE)系统中，终端需要在物理上行共享信道(Physical Uplink Shared Channel，简称为PUSCH)上发送数据(除了非自适应重传)，需要获得基站分配的有效的上行授权，该上行授权可以在物理下行控制信道(Physical Downlink Control Channel，简称为PDCCH)上或者随机接入响应中动态配置，或者被半静态配置，包含终端可以在哪个时间哪个频率上传输数据，以及采用的调制编码方案等，终端获得基站分配的上行授权后，可以在指定的时频域资源上发送上行数据。
为了进行数据的传输，媒体接入控制(Medium Access Control，简称为MAC)层需要从物理层获得相关的混合自动重传请求(Hybrid Automatic Repeat reQuest，简称为HARQ)信息。UE侧存在一个HARQ实体，其维护一定数量并行的HARQ进程，从而实现在等待上一次传输成功与否的反馈期间继续进行连续的传输。在一个给定的传输时间间隔(Transmission Time Interval，简称为TTI)，如果指示了该TTI的上行授权，HARQ实体为将要发生的传输确定一个HARQ进程。HARQ实体还把从物理层接收到的HARQ反馈确定或否定(Acknowledgement/Negative Acknowledgement，简称为ACK/NACK)，编码调制方案(Modulation and Coding Scheme，简称为MCS)和资源信息发送给相应的HARQ进程。每个HARQ进程均对应一个HARQ缓存。目前，采用同步的方式，即相对于第一次传输，会在同一个HARQ进程的固定的地方进行重传。图1是上行HARQ同步的子帧的示意图，如图1所示，为了提高数据的解码成功率，每个上行数据都会携带一个冗余版本(Redundancy Version，简称为RV)，一般情况下，数据发送的RV按顺序采用0、2、3、1。
在移动通信系统中，为了保证业务质量，给用户良好的业务体验，当 UE在某个小区与网络建立连接之后，UE仍然需要对服务小区和相邻小区的信号质量进行测量，选择合适的小区进行切换，以便满足移动性要求。图2是切换方法的流程图，如图2所示，在LTE系统中，UE接收到网络侧的命令需要进行切换时(图2中A点)，用户面复位(包括MAC层复位和分组数据汇聚协议(Packet Data Convergence Protocol，简称为PDCP)、无线链路层控制(Radio Link Control，简称为RLC)层的重建)并按照切换命令的要求更新MAC、PDCP和RLC层的配置，包括配置底层采用目标小区的完整性保护算法(integrity protection algorithm)和加密算法(ciphering algorithm)，在目标小区进行随机接入，随机接入完成后，UE通过随机接入响应获得一个上行授权，可以给目标小区发送切换完成响应，之后UE可以与目标小区进行通讯(图2中B点)。UE在目标小区进行随机接入过程时，需要断开与源小区的数据通讯。A点和B点之间，UE与源小区和目标小区都不能正常通讯，称为切换的中断时间，这个中断时间是随机接入过程占用的时间，即，是指随机接入开始和完成之间的时间。
由于频谱资源的匮乏，以及移动用户的大流量业务的激增，为了增加用户吞吐量和增强移动性能，采用低功率高频点如3.5GHz进行热点覆盖，但是由于高频点的信号衰减比较厉害，小小区的覆盖范围比较小，并且与已有的小区不共站点，引入一种新的增强方案，双连接(Dual Connectivity)就是其中之一。双连接下终端可以同时与两个以上的网络节点保持数据连接，仅与一个网络节点存在控制连接，一个网络节点是宏基站称为MeNB，另外一个网络节点是小小区基站称为SeNB。终端进行切换过程，和SeNB的改变(SCG change)过程，同样会引起业务中断。
为了减少甚至避开这个中断，现提出没有随机接入的切换过程，那么，终端如何获知和使用配置的上行授权，尚未有公开的方法。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种数据传输方法及装置，以针对没有随机接入 的切换过程，实现终端获知和使用配置的上行授权。
根据本发明的一个实施例，提供了一种数据传输方法，包括：
用户设备UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；
所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
在一实施方式中，所述UE在配置的所述上行授权上向所述第二基站发送响应消息包括：所述UE在配置的所述上行授权上发送所述响应消息，采用冗余版本RV为0。
在一实施方式中，在所述UE在配置的所述上行授权上向所述第二基站发送所述响应消息之后，所述方法还包括：在所述第二基站对所述响应消息解码失败的情况下，所述UE在配置的上行授权上向所述第二基站重传所述响应消息，采用RV为0。
在一实施方式中，在所述UE在配置的所述上行授权上向所述第二基站发送所述响应消息之后，所述方法还包括：在所述第二基站对所述响应消息解码成功的情况下，所述UE接收所述第二基站下发的PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，所述方法还包括：在同时需要新传和重传的情况下，所述UE在配置的上行授权上优先进行重传。
在一实施方式中，在接收到所述第二基站发送的PDCCH调度的情况下，所述上行授权处于失效状态。
在一实施方式中，所述方法还包括：所述UE接收取消所述上行授权的命令，其中，所述命令是所述第二基站下发的；所述UE取消所述上行授权。
根据本发明实施例的另一方面，提供了一种数据传输方法，包括：
接收用户设备UE在上行授权上发送的响应消息，其中，所述上行授权是第二基站为所述UE配置的，所述上行授权携带在所述UE从第一基站接收的所述切换命令或更换小小区基站的更换命令中。
在一实施方式中，在接收UE在上行授权上发送的响应消息之后，所述方法还包括：对所述响应消息进行解码；在对所述响应消息解码成功的情况下，确定接收到所述响应消息。
在一实施方式中，在确定接收到所述响应消息之后，所述方法还包括：向所述UE发送物理下行控制信道PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，在所述UE接收到所述PDCCH调度的情况下，所述上行授权处于失效状态。
在一实施方式中，所述方法还包括：向所述UE发送取消所述上行授权的命令，用于指示所述UE取消所述上行授权。
在一实施方式中，在所述第二基站对所述响应消息进行解码之后，所述方法还包括：在对所述响应消息解码失败的情况下，缓存所述响应消息；接收所述UE在配置的所述上行授权上重传的所述响应消息。
在一实施方式中，在所述第二基站接收所述UE在配置的所述上行授权上重传的所述响应消息之后，所述方法还包括：重新对所述响应消息进行解码；在重新对所述响应消息解码失败的情况下，将之前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
根据本发明实施例的另一方面，还提供了一种数据传输方法，包括：
获取第二基站为用户设备UE配置的上行授权；
向所述UE发送切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有所述上行授权，所述切换命令用于所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
根据本发明实施例的一方面，提供了一种数据传输装置，包括：
第一接收模块，设置为接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；
第一发送模块，设置为在配置的所述上行授权上向所述第二基站发送响应消息。
在一实施方式中，所述第一发送模块，还设置为在配置的所述上行授权上发送所述响应消息，采用冗余版本RV为0。
在一实施方式中，所述装置还包括：
第一重传模块，设置为在所述第二基站对所述响应消息解码失败的情况下，在配置的上行授权上向所述第二基站重传所述响应消息，采用RV为0。
在一实施方式中，所述装置还包括：
第二接收模块，设置为在所述第二基站对所述响应消息解码成功的情况下，接收所述第二基站下发的PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，所述装置还包括：
第二重传模块，设置为在同时需要新传和重传的情况下，在配置的上行授权上优先进行重传。
根据本发明实施例的另一方面，提供了一种数据传输装置，应用于基站，包括：
第三接收模块，设置为接收用户设备UE在上行授权上发送的响应消息，其中，所述上行授权是第二基站为所述UE配置的，所述上行授权携带在所述UE从第一基站接收的所述切换命令或更换小小区基站的更换命令中。
在一实施方式中，所述装置还包括：
第一解码模块，设置为对所述响应消息进行解码；
确定模块，设置为在对所述响应消息解码成功的情况下，确定接收到所述响应消息。
在一实施方式中，所述装置还包括：
第二发送模块，设置为向所述UE发送的PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，所述装置还包括：
缓存模块，设置为在对所述响应消息解码失败的情况下，缓存所述响应消息；
第四接收模块，设置为接收所述UE在配置的所述上行授权上重传的所述响应消息。
在一实施方式中，所述装置还包括：
第二解码模块，设置为重新对所述响应消息进行解码；
第三解码模块，设置为在重新对所述响应消息解码失败的情况下，将之前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
根据本发明实施例的另一方面，还提供了一种数据传输装置，应用于基站，包括：
获取模块，设置为获取第二基站为用户设备UE配置的上行授权；
第三发送模块，设置为向所述UE发送切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有所述上行授权，所述切换命令用于所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
根据本发明实施例的另一方面，还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述数据传输方法。
通过本发明实施例，用户设备UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；所述UE在配置的所述上行授权上向所述第二基站发送响应消息，在没有随机接入的切换过程中，使得终端能够很好地利用配置的上行授权，减少或避免切换中断时间。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是上行HARQ同步的子帧的示意图；
图2是切换方法的流程图；
图3是根据本发明实施例的数据传输方法的流程图一；
图4是根据本发明实施例的数据传输方法的流程图二；
图5是根据本发明实施例的数据传输装置的框图一；
图6是根据本发明实施例的数据传输装置的框图二；
图7是根据本发明实施例的数据传输装置的框图一；
图8是根据本发明实施例的数据传输装置的框图三；
图9是根据本发明实施例的携带上行授权的帧的示意图；
图10是根据本发明实施例的SeNB改变过程的流程图；
图11是根据本发明实施例的切换过程的流程图一；
图12是根据本发明实施例的切换过程的流程图二。
详述
下文中将参考附图并结合实施例来详细说明本申请。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
在本实施例中提供了一种数据传输方法，图3是根据本发明实施例的数据传输方法的流程图一，如图3所示，该流程包括如下步骤：
步骤S302，用户设备UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，该切换命令和该更换命令中携带有第二基站为该UE配置的上行授权；
步骤S304，该UE在配置的该上行授权上向该第二基站发送响应消息。通过上述步骤，在没有随机接入的切换过程中，使得终端能够很好地利用配置的上行授权，减少或避免切换中断时间。
在一实施方式中，该UE在配置的该上行授权上向该第二基站发送响应消息包括：该UE在配置的该上行授权上发送该响应消息，采用冗余版本RV为0。
在一实施方式中，在该UE在配置的该上行授权上向该第二基站发送该响应消息之后，在该第二基站对该响应消息解码失败的情况下，该UE在配置的上行授权上向该第二基站重传该响应消息，采用RV为0。
在一实施方式中，在该UE在配置的该上行授权上向该第二基站发送该响应消息之后，该方法还包括：在该第二基站对该响应消息解码成功的情况下，该UE接收该第二基站下发的PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，在同时需要新传和重传的情况下，该UE在配置的上行授权上优先进行重传。
在一实施方式中，在接收到该第二基站发送的PDCCH调度的情况下，该上行授权处于失效状态。
在一实施方式中，该UE接收取消该上行授权的命令，其中，该命令是该第二基站下发的；该UE取消该上行授权。
本发明实施例还提供了一种数据传输方法，包括：接收用户设备UE在上行授权上发送的响应消息，其中，该上行授权是该第二基站为该UE配置的，该上行授权携带在该UE从第一基站接收的该切换命令或更换小小区基站的更换命令中。
在一实施方式中，在接收UE在上行授权上发送的响应消息之后，该方法还包括：对该响应消息进行解码；在对该响应消息解码成功的情况下，确定接收到该响应消息。
在一实施方式中，在确定接收到该响应消息之后，向该UE发送物理下行控制信道PDCCH调度，其中，该PDCCH调度用于调度该UE进行数据传输。
在一实施方式中，在该UE接收到该PDCCH调度的情况下，该上行授权处于失效状态。
在一实施方式中，向该UE发送取消该上行授权的命令，用于指示该UE取消该上行授权。
在一实施方式中，在该第二基站对该响应消息进行解码之后，在对该响应消息解码失败的情况下，缓存该响应消息；接收该UE在配置的该上行授权上重传的该响应消息。
在一实施方式中，在该第二基站接收该UE在配置的该上行授权上重发的该响应消息之后，重新对该响应消息进行解码；在重新对该响应消息解码失败的情况下，将之前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
本发明实施例还提供了一种数据传输方法，图4是根据本发明实施例的数据传输方法的流程图二，如图4所示，该流程包括如下步骤：
步骤S402，获取第二基站为用户设备UE配置的上行授权；
步骤S404，向该UE发送切换命令或更换小小区基站的更换命令，其中，该切换命令和该更换命令中携带有该上行授权，该切换命令用于该UE在配置的该上行授权上向该第二基站发送响应消息。
实施例2
本发明实施例提供了一种数据传输装置，图5是根据本发明实施例的数据传输装置的框图一，如图5所示，包括：
第一接收模块52，设置为接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，该切换命令和该更换命令中携带有第二基站为该UE配置的上行授权；
第一发送模块54，设置为在配置的该上行授权上向该第二基站发送响应消息。
在一实施方式中，该第一发送模块，设置为在配置的该上行授权上发送该响应消息，采用冗余版本RV为0。
在一实施方式中，该装置还包括：第一重传模块，设置为在该第二基站对该响应消息解码失败的情况下，在配置的上行授权上向该第二基站重 传该响应消息，采用RV为0。
在一实施方式中，该装置还包括：第二接收模块，设置为在该第二基站对该响应消息解码成功的情况下，接收该第二基站下发的PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
在一实施方式中，该装置还包括：第二重传模块，设置为在同时需要新传和重传的情况下，在配置的上行授权上优先进行重传。
本发明实施例还提供了一种数据传输装置，应用于基站，图6是根据本发明实施例的数据传输装置的框图二，如图6所示，包括：
第三接收模块62，设置为接收用户设备UE在上行授权上发送的响应消息，其中，该上行授权是第二基站为该UE配置的，该上行授权携带在该UE从第一基站接收的该切换命令或更换小小区基站的更换命令中。
图7是根据本发明实施例的数据传输装置的框图，如图7所示，该装置还包括：
第一解码模块72，设置为对该响应消息进行解码；
确定模块74，设置为在对该响应消息解码成功的情况下，确定接收到该响应消息。
在一实施方式中，该装置还包括：第二发送模块，设置为向该UE发送的物理下行控制信道PDCCH调度，其中，该PDCCH调度用于调度该UE进行数据传输。
在一实施方式中，该装置还包括：
缓存模块，设置为在对该响应消息解码失败的情况下，缓存该响应消息；
第四接收模块，设置为接收该UE在配置的该上行授权上重传的该响应消息。
在一实施方式中，该装置还包括：
第二解码模块，设置为重新对该响应消息进行解码；
第三解码模块，设置为在重新对该响应消息解码失败的情况下，将之 前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
本发明实施例还提供了一种数据传输装置，应用于基站，图8是根据本发明实施例的数据传输装置的框图三，如图8所示，包括：
获取模块82，设置为获取第二基站为用户设备UE配置的上行授权；
第三发送模块84，设置为向该UE发送切换命令或更换小小区基站的更换命令，其中，该切换命令和该更换命令中携带有该上行授权，该切换命令用于该UE在配置的该上行授权上向该第二基站发送响应消息。
实施例3
本发明的实施例还提供了一种存储介质。在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
步骤S1，用户设备UE接收源基站发送的切换命令或更换小小区基站的更换命令，其中，该切换命令和所述更换命令中携带有目标基站为该UE配置的上行授权；
步骤S2，该UE在配置的该上行授权上向该目标基站发送响应消息。
在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本实施例中的示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
实施例4-实施例6
图9是根据本发明实施例的携带上行授权的帧的示意图，如图9所示，没有随机接入的切换过程，源基站给终端发送切换命令时，或者通过其他消息，给终端配置上行授权，比如是周期性的从SFN＝4，SF＝2开始，每隔一个子帧，就有一个上行授权。终端和基站按照如下规则进行上行数据的发送和接收：终端完成切换命令或重配命令的处理后，在配置的上行授权 发送完成响应，采用RV为0，如果需要在配置的上行授权上发送重传，RV也采用0。在配置的上行授权上，同时需要进行新传和重传，则先进行重传。基站检测到终端发送的数据，先进行解码，如果解码失败，则与之前收到的数据进行合并后再解码。基站在正确解码出切换完成响应消息后，才能通过PDCCH调度终端进行新传，配置的上行授权，在基站在正确解码出切换完成响应消息后，基站下发PDCCH调度，终端收到调度，取消配置的上行授权，或者，基站下发取消上行授权的命令，终端收到后，取消配置的上行授权。通过上述方法，在没有随机接入的切换过程中，使得终端能够很好地利用配置的上行授权，减少或避免切换中断时间。
实施例4
小区1，归属基站1。小区2，为小区1的相邻小区，归属基站2，是小小区。小区3，为小区1的相邻小区，归属基站3，是小小区。终端当前接入小区1，在小区1处于连接状态。
图10是根据本发明实施例的SeNB改变过程的流程图，如图10所示，终端还被配置了小区2，终端在小区1和小区2之间通过双连接进行聚合。
步骤S1001，基站1根据终端能力，以及终端的测量报告，和小区3的负荷等信息，决定让UE的小区2换成小区3；
步骤S1002，小区1通过与小区3的交互获取小区3上的上行授权配置信息，并通过SeNB的改变命令(比如RRC重配)通知终端，删除小区2增加小区3。
步骤S1003，终端收到更换SeNB命令，其中，该命令中携带新SeNB的上行授权；
步骤S1004，开始对命令进行处理，通过对命令的解析，获知配置了上行授权，如图9所示，从SFN＝4，SF＝2开始，每隔一个子帧，就有一个上行授权。在SFN＝4，SF＝2时，终端尚未完成命令的处理，因此放弃该上行授权，不发送任何数据，缓冲区为空。基站3根据配置的上行授权，尝试接收终端发送的数据。基站3没有收到终端发送的数据，不做处理。
步骤S1005，终端完成命令的处理，给基站1回应响应消息(比如RRC重配完成)，因为是新传，RV为0。终端还可以在SFN＝4，SF＝4时，给基站3发送填充(padding)数据，因为是新传，RV为0。
步骤S1006，基站1收到终端发送的上行数据，先进行解码，解码成功，确认收到终端回应的消息(比如RRC重配完成)，通知基站3，终端已经完成SeNB的更换。开始通过PDCCH调度终端，终端在上行授权上发送数据。基站3收到终端发送的padding数据，开始通过PDCCH调度终端。
步骤S1008，终端收到基站3的PDCCH调度；
步骤S1009，配置的上行授权失效。
本实施例中，基站1收到终端回应的消息(比如RRC重配完成)，通知基站3，终端已经完成SeNB的更换，开始通过PDCCH调度终端，和终端在SFN＝4，SF＝4时，给基站3发送padding数据，基站3收到终端发送的padding数据，开始通过PDCCH调度终端，可以只选择一个来执行。另外，终端在收到基站的PDCCH调度之前，配置的上行授权都可以用来发送padding或者数据。
实施例5
图11是根据本发明实施例的切换过程的流程图一，如图11所示，包括以下步骤：
步骤S1101，源基站根据终端能力，以及终端的测量报告，和目标基站的负荷等信息，决定让UE切换到目标基站中；
步骤S1102，通过与目标基站的交互获取目标基站上的上行授权配置信息，并通过切换命令通知终端。
步骤S1103，终端收到切换命令，开始对切换命令进行处理，通过对切换命令的解析，获知配置了上行授权，如图9所示，从SFN＝4，SF＝2开始，每隔一个子帧，就有一个上行授权，还可以是其他形式。
步骤S1104，在SFN＝4，SF＝2、4时，终端尚未完成切换命令的处理， 因此放弃该上行授权，不发送任何数据，缓冲区为空。
目标基站根据配置的上行授权，尝试接收终端发送的数据。目标基站没有收到终端发送的数据，不做处理。
步骤S1105，在SFN＝4，SF＝6时，终端完成切换命令的处理，给目标基站回应响应消息(比如切换完成)，因为是新传，RV为0。
步骤S1106，目标基站收到终端发送的上行数据，先进行解码，解码成功，确认收到终端回应的消息(比如切换完成)，开始通过PDCCH调度终端。
步骤S1107，终端收到目标基站的PDCCH调度，配置的上行授权失效。
本实施例中，终端在收到基站的PDCCH调度之前，配置的上行授权都可以用来发送padding或者数据。
本实施例中，步骤S1107，可以是基站下发取消上行授权的命令，终端收到后，取消配置的上行授权。
实施例6
图12是根据本发明实施例的切换过程的流程图二，如图12所示，包括以下步骤：
在配置的上行授权上，无论发送新传还是重传，RV都采用0，可以是默认的规则，或者基站1通过RRC配置通知终端。
步骤S1201，源基站根据终端能力，以及终端的测量报告，和目标基站的负荷等信息，决定让UE切换到目标基站中；
步骤S1202，源基站与目标基站的交互获取目标基站上的上行授权配置信息；
步骤S1203，源基站通过切换命令通知终端。
步骤S1204，终端收到切换命令，开始对切换命令进行处理，通过对切换命令的解析，获知配置了上行授权，如图9所示，从系统帧号 SFN＝4，子帧SF＝2开始，每隔一个子帧，就有一个上行授权，还可以是其他形式。
在SFN＝4，SF＝2、4时，终端尚未完成切换命令的处理，因此放弃该上行授权，不发送任何数据，缓冲区为空，
目标基站根据配置的上行授权，尝试接收终端发送的数据。基站没有收到终端发送的数据，不做处理。
步骤S1205，在SFN＝4，SF＝6时，终端完成切换命令的处理，给目标基站回应响应消息(比如切换完成)，因为是新传，RV为0。
步骤S1206，目标基站收到终端发送的上行数据，先进行解码，解码失败，将数据进行缓存；
步骤S1207，目标基站给终端回应NACK。
步骤S1208，终端收到NACK，在SFN＝5，SF＝4，计划进行重发(切换完成)，由于配置的上行授权中，SFN＝5，SF＝4，终端可以发送新的数据，此时，终端根据默认的规则或者基站的配置，需要放弃新的数据，进行重传，因为是在配置的上行授权上进行发送，即使是重传，也采用RV为0。如果终端收到目标基站的PDCCH调度，需要在SFN＝5，SF＝4进行新传，根据默认的规则或者基站的配置，终端也需要放弃，而进行重传。
步骤S1209，目标基站收到终端发送的上行数据，先进行解码，解码失败，与之前收到的数据进行合并后再解码，解码成功，确认收到终端发送的回应的消息(比如切换完成)，开始通过PDCCH调度终端。
步骤S1210，终端收到目标基站的PDCCH调度，配置的上行授权失效。
本实施例中，终端在收到基站的PDCCH调度之前，配置的上行授权都可以用来发送padding或者数据。
步骤S1208中，基站也可以配置给终端，在配置的上行授权上，发送重传，RV按照0,2,3,1的顺序。此时，终端进行重传，采用RV为2。
另外，步骤S1208中，终端在配置的上行授权上同时有新传和重传，可以通过配置避开，比如配置的上行授权的周期信息大于8，或者不是8的 倍数等等。
上述的本发明实施例的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明实施例不限制于任何特定的硬件和软件结合。
以上该仅为本发明的实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
工业实用性
通过本发明实施例，UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；所述UE在配置的所述上行授权上向所述第二基站发送响应消息，在没有随机接入的切换过程中，使得终端能够很好地利用配置的上行授权，减少或避免切换中断时间。

Claims (26)

  1. 一种数据传输方法，包括：
    用户设备UE接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；
    所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
  2. 根据权利要求1所述的方法，其中，所述UE在配置的所述上行授权上向所述第二基站发送响应消息包括：
    所述UE在配置的所述上行授权上发送所述响应消息，采用冗余版本RV为0。
  3. 根据权利要求2所述的方法，其中，在所述UE在配置的所述上行授权上向所述第二基站发送所述响应消息之后，所述方法还包括：
    在所述第二基站对所述响应消息解码失败的情况下，所述UE在配置的上行授权上向所述第二基站重传所述响应消息，采用RV为0。
  4. 根据权利要求2所述的方法，其中，在所述UE在配置的所述上行授权上向所述第二基站发送所述响应消息之后，所述方法还包括：
    在所述第二基站对所述响应消息解码成功的情况下，所述UE接收所述第二基站下发的物理下行控制信道PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
  5. 根据权利要求2所述的方法，所述方法还包括：
    在同时需要新传和重传的情况下，所述UE在配置的上行授权上优先进行重传。
  6. 根据权利要求4所述的方法，其中，在接收到所述第二基站发送的PDCCH调度的情况下，所述上行授权处于失效状态。
  7. 根据权利要求4所述的方法，所述方法还包括：
    所述UE接收取消所述上行授权的命令，其中，所述命令是所述第二基站下发的；
    所述UE取消所述上行授权。
  8. 一种数据传输接收方法，包括：
    接收用户设备UE在上行授权上发送的响应消息，其中，所述上行授权是第二基站为所述UE配置的，所述上行授权携带在所述UE从第一基站接收的所述切换命令或更换小小区基站的更换命令中。
  9. 根据权利要求8所述的方法，其中，在接收UE在上行授权上发送的响应消息之后，所述方法还包括：
    对所述响应消息进行解码；
    在对所述响应消息解码成功的情况下，确定接收到所述响应消息。
  10. 根据权利要求9所述的方法，其中，在确定接收到所述响应消息之后，所述方法还包括：
    向所述UE发送物理下行控制信道PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
  11. 根据权利要求10所述的方法，其中，在所述UE接收到所述PDCCH调度的情况下，所述上行授权处于失效状态。
  12. 根据权利要求10所述的方法，所述方法还包括：
    向所述UE发送取消所述上行授权的命令，用于指示所述UE取消所述上行授权。
  13. 根据权利要求9所述的方法，其中，在所述第二基站对所述响应消息进行解码之后，所述方法还包括：
    在对所述响应消息解码失败的情况下，缓存所述响应消息；
    接收所述UE在配置的所述上行授权上重传的所述响应消息。
  14. 根据权利要求13所述的方法，其中，在所述第二基站接收所述UE在配置的所述上行授权上重传的所述响应消息之后，所述方法还包括：
    重新对所述响应消息进行解码；
    在重新对所述响应消息解码失败的情况下，将之前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
  15. 一种数据传输方法，包括：
    获取第二基站为用户设备UE配置的上行授权；
    向所述UE发送切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有所述上行授权，所述切换命令用于所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
  16. 一种数据传输装置，包括：
    第一接收模块，设置为接收第一基站发送的切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有第二基站为所述UE配置的上行授权；
    第一发送模块，设置为在配置的所述上行授权上向所述第二基站发送响应消息。
  17. 根据权利要求16所述的装置，其中，所述第一发送模块，设置为在配置的所述上行授权上发送所述响应消息，采用冗余版本RV为0。
  18. 根据权利要求17所述的装置，所述装置还包括：
    第一重传模块，设置为在所述第二基站对所述响应消息解码失败的情况下，在配置的上行授权上向所述第二基站重传所述响应消息，采用RV为0。
  19. 根据权利要求17所述的装置，所述装置还包括：
    第二接收模块，设置为在所述第二基站对所述响应消息解码成功的情况下，接收所述第二基站下发的用于调度所述UE进行数据传输的物理下行控制信道PDCCH调度。
  20. 根据权利要求17所述的装置，所述装置还包括：
    第二重传模块，设置为在同时需要新传和重传的情况下，在配置的上行授权上优先进行重传。
  21. 一种数据传输装置，应用于基站，包括：
    第三接收模块，设置为接收用户设备UE在上行授权上发送的响应消息，其中，所述上行授权是第二基站为所述UE配置的，所述上行授权携带在所述UE从第一基站接收的所述切换命令或更换小小区基站的更换命令中。
  22. 根据权利要求21所述的装置，所述装置还包括：
    第一解码模块，设置为对所述响应消息进行解码；
    确定模块，设置为在对所述响应消息解码成功的情况下，确定接收到所述响应消息。
  23. 根据权利要求22所述的装置，所述装置还包括：
    第二发送模块，设置为向所述UE发送的物理下行控制信道PDCCH调度，其中，所述PDCCH调度用于调度所述UE进行数据传输。
  24. 根据权利要求22所述的装置，所述装置还包括：
    缓存模块，设置为在对所述响应消息解码失败的情况下，缓存所述响应消息；
    第四接收模块，设置为接收所述UE在配置的所述上行授权上重传的所述响应消息。
  25. 根据权利要求24所述的装置，所述装置还包括：
    第二解码模块，设置为重新对所述响应消息进行解码；
    第三解码模块，设置为在重新对所述响应消息解码失败的情况下，将之前缓存的响应消息和当前接收到的响应消息合并后再次进行解码。
  26. 一种数据传输装置，应用于基站，包括：
    获取模块，设置为获取第二基站为用户设备UE配置的上行授权；
    第三发送模块，设置为向所述UE发送切换命令或更换小小区基站的更换命令，其中，所述切换命令和所述更换命令中携带有所述上行授权，所述切换命令用于所述UE在配置的所述上行授权上向所述第二基站发送响应消息。
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