WO2020038391A1 - Procédé de transmission de données et dispositif terminal - Google Patents

Procédé de transmission de données et dispositif terminal Download PDF

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Publication number
WO2020038391A1
WO2020038391A1 PCT/CN2019/101732 CN2019101732W WO2020038391A1 WO 2020038391 A1 WO2020038391 A1 WO 2020038391A1 CN 2019101732 W CN2019101732 W CN 2019101732W WO 2020038391 A1 WO2020038391 A1 WO 2020038391A1
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Prior art keywords
data
link
uplink
resource
terminal device
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PCT/CN2019/101732
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English (en)
Chinese (zh)
Inventor
袁锴
徐海博
崔立伟
张明镇
赵文龙
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华为技术有限公司
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Priority claimed from CN201811405279.6A external-priority patent/CN110858980B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020038391A1 publication Critical patent/WO2020038391A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission method and a terminal device.
  • LTE long term evolution
  • a terminal device UE
  • a network device such as an evolution base station (evolution NodeB, eNB)
  • the UE needs to send a scheduling request to the eNB ( scheduling (request, SR); after receiving the SR, the eNB returns an uplink scheduling grant (UL grant) to the UE; the UE then sends a buffer status report (buffer status report, BSR) to the eNB, and the eNB can learn by receiving the BSR
  • BSR buffer status report
  • the size of the uplink data sent by the UE thus, the eNB sends an uplink scheduling grant to the UE, and the UE can know the size of the allocated resource through the uplink scheduling grant.
  • the specific process can be shown in Figure 1. It can be understood that the information sent by the eNB to the UE shown in Figure 1 is through the physical downlink control channel (PDCCH).
  • PDCH physical downlink control channel
  • logical channels logical channels
  • uplink transmission resources also referred to as uplink scheduling grant
  • the NR specifies a pre-processing mode.
  • the NR radio link control (RLC) layer needs to pre-process the data in the NR packet data convergence protocol layer (PDCP), and then control the data in the NR media access control.
  • PDCP packet data convergence protocol layer
  • MAC medium access control
  • the dual connectivity (EUTRN-NR dual connectivity, EN-DC) of 4G-5G wireless access is an important scenes to be used.
  • EN-DC EUTRN-NR dual connectivity
  • the split bearer of EN-DC when LTE data has been sent to the base station and the NR logical channel is not configured with SR resources, it is necessary to obtain uplink transmission resources through random access. Due to a certain delay in random access, the NR chain There is a time delay for data transmission on the road. Therefore, the data received between the LTE receive link and the NR receive link of the base station has a large interval, which causes a data reception stall problem.
  • This application provides a data transmission method and a terminal device, which can effectively reduce the discontinuity of uplink data transmission and avoid the problem of network device data receiving freeze.
  • an embodiment of the present application provides a data transmission method, including:
  • the terminal device UE sends uplink data through the first link and the second link, and the first link is not configured with uplink scheduling request resources, when the UE does not obtain uplink transmission resources, all The UE does not perform preprocessing of the uplink data, and sends the uplink data through the second link; in a case where the UE obtains the uplink sending resource, the UE according to the configured uplink The sending resource determines whether to perform pre-processing on the uplink data.
  • the UE when uplink transmission resources are not obtained, or may also be referred to as cases where uplink scheduling authorization is not obtained, the UE does not preprocess the uplink data, but first passes the second link. Sending uplink data avoids preprocessing the uplink data when the UE does not obtain uplink transmission resources. After preprocessing the uplink data, the preprocessed data is not processed until the uplink transmission resources are obtained. Processing, thereby effectively avoiding the delay of uplink data transmission, reducing the discontinuity of uplink data transmission, and avoiding the problem of network equipment's stuttering when receiving data.
  • the uplink data includes first data
  • the determining, by the UE, whether to preprocess the uplink data according to the configured uplink transmission resources includes: configuring the uplink transmission resources.
  • the UE determines to pre-process the first data; the method further includes: the UE sends the pre-processed first first data over the first link data.
  • whether to preprocess the first data is determined by the amount of the configured uplink transmission resources. For example, when the amount of the uplink transmission resources obtained by the UE is greater than the first threshold, the first data is processed. Performing preprocessing can avoid the situation that the amount of uplink transmission resources is too small, which leads to the situation that the preprocessed first data cannot be sent in time after the first data is preprocessed, which further reduces the discontinuity of uplink data transmission. Sex.
  • the method further includes: when the configured amount of the uplink sending resource is not greater than the first threshold, the UE determines that the first data is not preprocessed .
  • the uplink data includes second data. If the UE does not obtain the uplink sending resource, the UE does not perform preprocessing of the uplink data, and passes the The sending the uplink data by the second link includes that the UE does not perform preprocessing of the second data, and sends the second data through the second link.
  • a case where the terminal device UE sends uplink data through a first link and a second link, and the first link is not configured with an uplink scheduling request resource includes: the UE is in In the split mode of the dual-connection EN-DC for 4G-5G wireless access, and the uplink scheduling request resource is not configured in the UE's new wireless NR link.
  • an embodiment of the present application further provides a data transmission method, including:
  • the terminal device UE When the terminal device UE sends uplink data through the third link and the fourth link, and the third link is not configured with uplink scheduling request resources, when the UE does not obtain uplink transmission resources, all The UE preprocesses the uplink data to obtain third data, and determines whether to send fourth data over the third link according to a delay in obtaining the uplink sending resource by the UE, where the fourth data includes Part or all of the third data.
  • the determining whether to send the fourth data through the third link according to a delay in obtaining the uplink sending resource by the UE includes: obtaining the uplink by the UE.
  • the determining whether to send the fourth data over the third link according to a delay in obtaining the uplink sending resource by the UE includes: obtaining, by the UE, the uplink sending When the delay of the resource is greater than the second threshold, the UE determines that the fourth data is not sent through the third link; the method further includes: the UE sends through the fourth link The fourth data.
  • the sending, by the UE, the fourth data through the third link includes: determining, by the UE, a data amount of the fourth data according to a resource amount of the uplink sending resource. ; The UE sends the fourth data through the third link.
  • a case where the terminal device UE sends uplink data through a third link and a fourth link and the third link is not configured with an uplink scheduling request resource includes: the UE is in In the split mode of the dual-connection EN-DC for 4G-5G wireless access, and the uplink scheduling request resource is not configured in the UE's new wireless NR link.
  • an embodiment of the present application provides a terminal device, including:
  • the sending unit is configured to: when the UE does not obtain the uplink In the case of sending resources, the UE does not perform preprocessing of the uplink data, and sends the uplink data through the second link; a determining unit is configured to, when the UE obtains the uplink sending resources Next, the UE determines whether to preprocess the uplink data according to the configured uplink sending resources.
  • the uplink data includes first data
  • the determining unit is specifically configured to: when the configured resource amount of the uplink sending resource is greater than a first threshold, the UE determines Pre-processing the first data; the sending unit is further configured to send the pre-processed first data through the first link.
  • the uplink data includes second data
  • the sending unit is specifically configured to not perform the second data when the UE does not obtain the uplink sending resource. Pre-processing, sending the second data through the second link.
  • a case where the terminal device UE sends uplink data through a first link and a second link, and the first link is not configured with an uplink scheduling request resource includes: the UE is in In the split mode of the dual-connection EN-DC for 4G-5G wireless access, and the uplink scheduling request resource is not configured in the UE's new wireless NR link.
  • an embodiment of the present application further provides a terminal device, including:
  • the preprocessing unit is configured to: In the case of uplink transmission resources, the uplink data is pre-processed to obtain third data; and a determining unit is configured to determine whether to send the data through the third link according to a delay in obtaining the uplink transmission resources by the UE. Fourth data, which includes part or all of the third data.
  • the determining unit is specifically configured to determine that the fourth data is sent over the third link when a delay in acquiring the uplink sending resource is not greater than a second threshold.
  • the terminal device further comprises: a sending unit, further configured to send the fourth data through the third link.
  • the determining unit is specifically configured to determine that the fourth data is not sent through the third link when a delay in acquiring the uplink sending resource is greater than a second threshold.
  • the terminal device further comprises: a sending unit, further configured to send the fourth data through the fourth link.
  • the sending unit is specifically configured to determine a data amount of the fourth data according to a resource amount of the uplink sending resource; and send the fourth data through the third link. data.
  • a case where the terminal device UE sends uplink data through a third link and a fourth link and the third link is not configured with an uplink scheduling request resource includes: the UE is in In the split mode of the dual-connection EN-DC for 4G-5G wireless access, and the uplink scheduling request resource is not configured in the UE's new wireless NR link.
  • an embodiment of the present application further provides a terminal device, including a processor, a memory, and a transceiver.
  • the memory may be used to store a program; the processor may be used to execute the program stored in the memory.
  • the transceiver When the program is executed, enable the terminal device to implement the corresponding method described in the first aspect and / or the second aspect; the transceiver may be used to support communication between the terminal device and other network elements, and The transceiver may be specifically configured to execute the corresponding method according to the first aspect and / or the second aspect.
  • the memory may be a physically independent unit, or may be integrated with a processor.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores instructions, and when the computer-readable storage medium is run on a computer, the computer executes the methods described in the foregoing aspects. .
  • an embodiment of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the methods described in the above aspects.
  • FIG. 1 is a schematic flowchart of a data transmission method
  • FIG. 2 is a schematic diagram of a network architecture according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a user plane configuration according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another user plane configuration according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a data transmission method
  • FIG. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a scenario of a data transmission method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another data transmission method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another data transmission method according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of still another terminal device according to an embodiment of the present application.
  • At least one (item) means one or more
  • “multiple” means two or more
  • “at least two (items)” means two or three And more than three, "and / or”, used to describe the association relationship of the associated objects, indicating that there can be three kinds of relationships, for example, "A and / or B” can mean: only A, only B, and both A And B, where A and B can be singular or plural.
  • the character “/” generally indicates that the related objects are an "or” relationship.
  • “At least one or more of the following” or similar expressions means any combination of these items, including any combination of single or plural items.
  • At least one (a), a, b, or c can represent: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", Where a, b, and c can be single or multiple.
  • the first version of the 5th-generation (5G) standard was frozen.
  • the first frozen version is for non-standalone (NSA) networking, where the NAS can also be referred to as 4G-5G wireless access dual connectivity (EUTRN-NR dual connectivity, EN -DC).
  • EUTRN-NR dual connectivity, EN -DC 4G-5G wireless access dual connectivity
  • EN-DC 4G-5G wireless access dual connectivity
  • the networking method of EN-DC will be the method chosen by most operators worldwide.
  • FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application. As shown in FIG. 2, the network architecture of the EN-DC may be as follows:
  • the UE can be connected to a 4th-generation (4G) LTE base station (ie, eNB) and a 5G NR base station (ie, gNB) at the same time.
  • 4G 4th-generation
  • eNB 4th-generation
  • gNB 5G NR base station
  • the eNB may be a primary node, and may also be called a MeNB (master eNB) in EN-DC
  • the gNB may be a secondary node, and may also be called a SgNB (secondary gNB) in EN-DC.
  • the eNB may communicate with a mobility management entity (MME) and a serving gateway (S-GW) of the 4G core network through the S1-C interface and the S1-U interface, respectively.
  • MME mobility management entity
  • S-GW serving gateway
  • the eNB and the gNB can be connected through an X2 interface.
  • FIG. 3 is a schematic diagram of a user plane configuration according to an embodiment of the present application. among them,
  • RLC bearer In a Cell group, the RLC configuration and logical channel configuration of a radio bearer are called RLC bearers;
  • MCG bearer RLC bearer is only configured on MCG radio bearer
  • RLC bearer is only configured on SCG radio bearer
  • RLC bearer is configured in MCG and SCG radio bearer at the same time;
  • MN Master-node termination in EN-DC: PDCP radio bearer in MeNB;
  • Terminated bearer of secondary node (SN) in EN-DC PDCP radio bearer in SgNB;
  • the cells allocated to the UE belonging to MeNB and SgNB are divided into two groups. Among them, the cells belonging to MeNB are called Master Cell Group, that is, MCG, and the cells belonging to SgNB are called Secondary Cell Group, that is, SCG.
  • MCG Master Cell Group
  • SgNB Secondary Cell Group
  • the UE can perceive only three types of bearers, namely, the MCG bearer, the SCG bearer, and the Split bearer.
  • FIG. 4 is a schematic diagram of another user plane configuration according to an embodiment of the present application.
  • MCG bearer terminated by MN from the network side, there are six types of bearers: MCG bearer terminated by MN, SCG bearer terminated by MN, Split bearer terminated by MN, MCG bearer terminated by SN, SCG bearer terminated by SN, and SN terminated.
  • Split hosting from the network side, there are six types of bearers: MCG bearer terminated by MN, SCG bearer terminated by MN, Split bearer terminated by MN, MCG bearer terminated by SN, SCG bearer terminated by SN, and SN terminated.
  • MN MCG bearer terminated by MN
  • SCG bearer terminated by MN from the network side, there are six types of bearers: MCG bearer terminated by MN, SCG bearer terminated by MN, Split bearer terminated by MN, MCG bearer terminated by SN, SCG bearer terminate
  • FIG. 5 is a schematic flowchart of a data transmission method. As shown in FIG. 5, the data transmission method may include:
  • NR PDCP receives data and buffers the data.
  • the data may also be referred to as uplink data.
  • the NR PDCP can receive data from the application side, that is, the data can be sent by the application-side data processing module to the NR PDCP.
  • the UE sends the data buffered in the NR PDCP through the LTE link.
  • the UE sends the data buffered in the NR PDCP through the LTE link, and it can also be understood that the UE sends the data buffered in the NR PDCP through the LTE access network. Further, the UE may first obtain uplink transmission resources through the LTE access network, and then send data buffered in the NR PDCP through the LTE link.
  • the UE When the amount of data buffered by the NR PDCP is not less than the EN-DC offload threshold configured by the network device, the UE enables the split bearer, that is, the UE can send the data buffered in the NR PDCP through the LTE link and the NR link.
  • the UE enables the split bearer, that is, the UE can send data buffered in the NR PDCP through the LTE access network and the NR access network.
  • Send part of the data buffered in the NR PDCP over the LTE link which may also be referred to as sending part of the data buffered in the NR PDCP over the LTE access network.
  • the NR RLC layer preprocesses the data buffered in the NR PDCP.
  • the manner in which the NR RLC layer preprocesses the data may include operations such as data splitting and encapsulation, such as RLC header encapsulation of data, etc. This embodiment does not limit the manner of preprocessing.
  • the NR MAC layer obtains a BSR of a logical channel of the NR and RLC layer, and the BSR of the logical channel can be used to apply for a network device (network, NW) for uplink transmission resources.
  • NW network device
  • the network device may be understood as a base station such as an eNB or a gNB, and so on.
  • this NW can be understood as gNB.
  • uplink transmission resources can also be understood as uplink scheduling grant (UL grant).
  • UL grant uplink scheduling grant
  • the NR MAC layer initiates a random access request and waits for the network-side device to configure an uplink send resource (UL grant).
  • the random access is successful, and the NR MAC layer obtains uplink sending resources.
  • the NR MAC layer obtains the buffered data from the NR RLC layer.
  • the data buffered by the NR RLC layer is the data that has been pre-processed.
  • the MAC layer sends data and a BSR to the network device according to the uplink sending resources configured by the network device.
  • the UE when the UE is configured with a split bearer (also referred to as a split mode in the embodiment of the present application) and the NR link is not configured with an uplink scheduling request resource, how to reduce discontinuities in sending data and reduce network device data reception? Stuck and discarded issues need to be resolved.
  • a split bearer also referred to as a split mode in the embodiment of the present application
  • an embodiment of the present application provides a data transmission method.
  • the data transmission method provided in the embodiment of the present application will be described in detail below.
  • FIG. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 2 and the user plane configuration shown in FIGS. 3 and 4. It can be understood that the method shown in FIG. 6 is shown in a case where the UE sends uplink data through the first link and the second link, and the uplink scheduling request resource is not configured on the first link. It can be understood that the method shown in FIG. 6 is shown when the amount of data buffered by the UE is not less than the offload threshold configured by the network device. The method shown in FIG. 6 is shown when the amount of data buffered by the NR PDCP is not less than the EN-DC shunt threshold configured by the network device.
  • the uplink data in the embodiments of the present application is a collective name, that is, the uplink data may include data sent through a first link and data sent through a second link.
  • this embodiment of the present application divides the uplink data into first data and second data.
  • the first data can be understood as the uplink data sent by the UE to the network device after the uplink transmission resource is obtained.
  • the second data can be understood as the uplink data that the UE sends to the network device without obtaining the uplink sending resources.
  • the second data since uplink data is not preprocessed and uplink data is sent through the second link when uplink transmission resources are not obtained, the second data may also be understood as When uplink transmission resources are obtained, the uplink data sent through the second link.
  • the first data can be understood as after the uplink transmission resources are acquired, The uplink data sent by the UE to the network device through the first link or the second link.
  • the data transmission method may include:
  • the UE does not obtain uplink transmission resources, the UE does not preprocess the second data and sends the second data through the second link; the network device receives the first data from the UE through the second link. Two data.
  • the UE when the UE does not obtain uplink transmission resources, the UE may not preprocess the data buffered in the NR PDCP, but may continuously send part of the data buffered in the NR PDCP or the second link through the second link. All (ie second data). Understandably, “continuous” can be understood as sending some or all of the data buffered in the NR PDCP through the second link. Until the UE obtains the uplink transmission request resource, the UE can reconfigure the transmission chain according to the obtained uplink transmission resource. Or, the UE may decide whether to perform the next operation such as whether to preprocess the data buffered in the NR PDP according to the obtained uplink sending resources.
  • the uplink sending resource can also be understood as an uplink scheduling grant.
  • the UE When the UE obtains an uplink transmission resource, and when the resource amount of the uplink transmission resource is greater than a first threshold, the UE preprocesses the first data.
  • the resource amount in the resource amount of the uplink sending resource may be used to indicate the resource amount of the transmission data indicated in the uplink sending resource, or may be understood as how much can be transmitted indicated in the uplink sending resource.
  • the amount of data resources That is, the amount of resources can be represented by the amount of transmission data indicated in the uplink transmission resources, or the amount of resources can be represented by the data amount of data indicated in the uplink transmission resources.
  • the first threshold is a parameter used to measure the amount of resources of the uplink transmission resources.
  • the first threshold can be transmitted according to the amount of data that needs to be transmitted, that is, the amount of cached data (the amount of data buffered in the current NR PDCP ), Where the more the amount of data cached, the larger the first threshold.
  • the first threshold may be set by setting a proportional relationship between the amount of data buffered and the amount of data sent. For example, after setting a certain proportional relationship, the first threshold value can be determined according to the certain proportional relationship and the amount of cached data. It can be understood that the above is only an example, and how the first threshold is set is not limited in the embodiment of the present application.
  • the manner of preprocessing the first data may include operations such as splitting and encapsulating the first data, such as RLC header encapsulation of the first data, etc. This embodiment does not limit the manner of preprocessing. Further, the first data may be understood as a part or all of the data buffered in the NR PDCP.
  • the UE sends the preprocessed first data through the first link, and the network device receives the preprocessed first data from the UE through the first link.
  • the UE may send the preprocessed first data through the first link.
  • the UE may pass the NR The link sends the preprocessed first data.
  • the UE may not preprocess the data buffered in the NR PDCP, that is, the UE may not preprocess the first data, as to which chain to pass To send the first data, which is not limited in the embodiment of the present application.
  • the first data may be sent to the network device through the first link, or the first data may be sent to the network device through the second link.
  • the network device when sending the preprocessed first data to the network device through the first link, the network device may be understood as the network device corresponding to the first link, as the network device may understand GNB; and when sending the second data to the network device through the second link, the network device can be understood as a network device corresponding to the second link, such as the network device can be understood as an eNB. That is to say, in the embodiment of the present application, different network devices receive data due to different links. For details, refer to the network architecture shown in FIG. 2.
  • uplink data when uplink transmission resources are not obtained, uplink data is not pre-processed, but uplink data is sent through the second link first, which avoids the situation where the UE does not acquire uplink transmission resources.
  • the upstream data is pre-processed. After the upstream data is pre-processed, the pre-processed data is not processed until the uplink transmission resources are obtained, thereby effectively avoiding the delay of uplink data transmission and reducing uplink data transmission. Discontinuity, and avoid the problem of network equipment receiving data stutter.
  • FIG. 7 is a schematic diagram of a data transmission method provided by an embodiment of the present application. As shown in FIG. 7, the method may include:
  • the NR PDCP layer receives data and buffers the data.
  • this data may also be referred to as uplink data.
  • the NR PDCP can receive data from the application side, that is, the data can be sent by the application-side data processing module to the NR PDCP.
  • the UE sends the data buffered in the NR PDCP layer through the LTE link.
  • the UE sends data buffered in the NR PDCP layer through the LTE link, and it can also be understood that the UE sends data buffered in the NR PDCP layer through the LTE access network. Further, the UE may first obtain uplink transmission resources through the LTE access network, and then send data buffered in the NR PDCP through the LTE link.
  • the UE When the amount of data buffered at the NR PDCP layer is not less than the EN-DC shunting threshold configured by the network device, the UE enables the split bearer, that is, the UE can send data buffered at the NR PDCP layer through the LTE link and the NR link. .
  • the UE enables the split bearer, that is, the UE can send data buffered in the NR PDCP layer through the LTE access network and the NR access network.
  • continuously sending part of the data buffered in the NR PDCP through the LTE link may also be referred to as sending part of the data buffered in the NR PDCP through the LTE access network.
  • the UE does not obtain uplink transmission resources, it may also be understood that the UE does not obtain uplink transmission resources, and it may also be understood that the UE obtains uplink transmission resources before it. It can be understood that part of the data buffered in the NR PDCP is uplink data that has not been pre-processed, that is, second data.
  • the NR MAC layer initiates a random access request and waits for the network device to configure an uplink send resource (UL grant).
  • the random access is successful, and the NR MAC layer obtains uplink sending resources.
  • the NR MAC layer obtains the BSR and the data to be transmitted from the NR PDCP and NR RLC layers.
  • the manner in which the NR RLC layer preprocesses the data may include operations such as data splitting and encapsulation, such as RLC header encapsulation of data, etc.
  • the embodiments of the present application do not limit the manner of preprocessing.
  • the UE may determine whether to preprocess the data buffered in the NR PDCP layer according to the uplink transmission resources allocated by the network device. If the amount of uplink transmission resources allows preprocessing of the data buffered in NR PDCP, you can turn on the preprocessing function to preprocess the data buffered in the NR PDCP layer, and then send the preprocessed data over the NR link. . Another example is that the amount of resources in the uplink transmission resources does not allow preprocessing of the data buffered in NR PDCP, you can turn off the preprocessing function, and then send the data buffered in NR PDCP through the NR link or LTE link.
  • the MAC layer sends data and a data buffer status report to the network device according to the uplink sending resources configured by the network device.
  • the data sent to the network device may be preprocessed uplink data, that is, the first data; or may be uplink data that has not been preprocessed, which is not limited in the embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another data transmission method according to an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 2 and the user plane configuration shown in FIGS. 3 and 4. It can be understood that the scenario shown in FIG. 8 is shown in a case where the UE sends uplink data through the third link and the fourth link, and the third link is not configured with an uplink scheduling request resource. It can be understood that the method shown in FIG. 8 is shown when the amount of data buffered by the UE is not less than the offload threshold configured by the network device. The method shown in FIG. 8 is shown when the amount of data buffered by the NR PDCP is not less than the EN-DC shunt threshold configured by the network device.
  • the data transmission method may include:
  • the UE preprocesses uplink data to obtain third data.
  • the uplink data may include data buffered in the NR PDCP layer.
  • the third data is data that is pre-processed on the uplink data. More specifically, the third data includes data that is pre-processed on the data buffered in the NR PDCP layer.
  • the UE can determine whether to send the fourth data through the third link according to the delay in acquiring uplink transmission resources, where the fourth data includes a part of the third data Or all data.
  • the fourth data specifically includes how much data in the third data can be determined according to the resource amount of the uplink transmission resource. How the UE determines whether to send the fourth data through the third link according to the delay in acquiring the uplink sending resource may be as follows.
  • the UE determines to send the fourth data through the third link.
  • the second threshold value is a parameter used to measure the length of time for the UE to obtain uplink transmission resources. Therefore, the embodiment of the present application does not limit the specific value of the second threshold value. It can be understood that the value of the second threshold is not greater than the time from when the random access is initiated to the time when the random access is successful. Generally, the time from when the random access is sent to the random access is 100 ms, the second threshold is not greater than 100ms. Further, the second threshold cannot be too short, so that too much data is sent to the network device through the fourth link.
  • the time delay for the UE to obtain uplink transmission resources is not greater than the second threshold, that is, the time from when the UE initiates a random access request to the network device until the random access is successful, the time for obtaining uplink transmission resources is not greater than the second threshold. More vividly, the UE has obtained uplink transmission resources within the time period corresponding to the second threshold.
  • the third link may include an NR link, that is, if the UE obtains uplink transmission resources within a certain period of time, the UE may determine to send preprocessed data (that is, fourth data) through the NR link.
  • the UE sends fourth data through the third link, and the network device receives the fourth data from the UE through the third link.
  • the UE sends the fourth data through the third link, including:
  • the UE may determine the amount of data included in the fourth data by using the amount of resources for data transmission indicated in the uplink transmission resource, and may also be called to determine how much data in the third data is used as Fourth data. It can be understood that the embodiment of the present application only limits the amount of one type of data. As for which data in the third data is specifically used as the fourth data, the embodiment of the present application does not limit.
  • the UE determines not to send the fourth data through the third link.
  • the delay for the UE to obtain uplink transmission resources is greater than the second threshold. That is, from the time when the UE initiates a random access request to the network device and the random access is successful, the time for obtaining the uplink transmission resources is greater than the second threshold. More vividly, the UE did not acquire uplink transmission resources within the time period corresponding to the second threshold. Therefore, the UE can determine that the pre-processed data (that is, the fourth data) is not sent through the NR link.
  • the UE sends fourth data through the fourth link, and the network device receives the fourth data from the UE through the fourth link.
  • the fourth link may include an LTE link, that is, if the delay for the UE to obtain uplink transmission resources is greater than the second threshold, the UE may send the preprocessed data (that is, the fourth data).
  • whether to send some or all of the preprocessed third data through the third link is determined according to the delay of the UE obtaining uplink transmission resources, so that the data transmission mode can be effectively determined according to the delay. Effectively avoid the discontinuity of data transmission and avoid the problem of network equipment receiving data stutter.
  • the network device when the UE sends the fourth data to the network device through the third link, the network device can be understood as a network device corresponding to the third link, such as gNB.
  • the network device when the UE sends the fourth data to the network device through the fourth link, the network device can be understood as a network device corresponding to the fourth link, such as an eNB. That is to say, in the embodiment of the present application, different network devices receive data due to different links. For details, refer to the network architecture shown in FIG. 2.
  • FIG. 9 is a schematic diagram of another data transmission method provided by an embodiment of the present application. As shown in FIG. 9, the method may include:
  • NR PDCP receives data and buffers the data.
  • the data may also be referred to as uplink data.
  • the NR PDCP can receive data from the application side, that is, the data can be sent by the application-side data processing module to the NR PDCP.
  • the UE sends the data buffered in the NR PDCP through the LTE link.
  • the UE sends the data buffered in the NR PDCP through the LTE link, and it can also be understood that the UE sends the data buffered in the NR PDCP through the LTE access network. Further, the UE may first obtain uplink transmission resources through the LTE access network, and then send data buffered in the NR PDCP through the LTE link.
  • the UE When the amount of data buffered by the NR PDCP is not less than the EN-DC offload threshold configured by the network device, the UE enables the split bearer, that is, the UE can send the data buffered in the NR PDCP through the LTE link and the NR link.
  • the UE enables the split bearer, that is, the UE can send data buffered in the NR PDCP through the LTE access network and the NR access network.
  • Send part of the data buffered in the NR PDCP through the LTE link which may also be referred to as sending part of the data buffered in the NR PDCP through the LTE access network.
  • the NR RLC layer preprocesses part of the data buffered in the NR PDCP.
  • the manner in which the NR RLC layer preprocesses the data may include operations such as data splitting and encapsulation, such as RLC header encapsulation of data, etc.
  • This embodiment does not limit the manner of preprocessing. It can be understood that the data obtained after the NR RLC layer preprocesses some of the data buffered in the NR PDCP can be referred to as the third data.
  • the NR MAC layer obtains a BSR of a logical channel of the NR and RLC, and the BSR of the logical channel may be used to apply for an NW uplink transmission resource.
  • the NR MAC initiates a random access request and waits for the network device to configure an uplink send resource (UL grant).
  • the NR PDCP buffered preprocessed data is sent over the LTE link, that is, some or all of the third data is sent over the LTE link.
  • the preprocessed data buffered in the NR PDCP is sent over the NR link.
  • the random access is successful, and the NR MAC obtains uplink scheduling request resources.
  • the NR MAC layer obtains the buffered preprocessed data from the NR RLC layer.
  • the MAC layer sends preprocessed data and a data buffer status report to the network device according to the uplink sending resources configured by the network device.
  • the data sent to the network device can be understood as the pre-processed data.
  • the NR PDCP when the UE needs to initiate random access when no uplink scheduling resource parameter is configured on the NR link, the NR PDCP can update the preprocessed data of the NR and RLC layer according to the random access delay situation,
  • the old pre-processed data (relative to the updated data, referred to as the old pre-processed data) buffered by the NRRLC layer is sent over the LTE link to ensure the continuity of data transmission.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may be configured to execute the data transmission methods shown in FIG. 5 to FIG. 9.
  • the user plane configuration of the terminal device can be shown in FIG. 3. It can be understood that the data transmission method performed by the terminal device is shown in a case where the terminal device sends uplink data through the first link and the second link, and the uplink scheduling request resource is not configured on the first link.
  • the UE may include a dual-connection EN-DC in 4G-5G wireless access In the split mode of the UE, and the uplink scheduling request resource is not configured on the UE's new wireless NR media access control MAC layer.
  • the terminal device includes:
  • the sending unit 1001 is configured to send the uplink data through the second link without preprocessing the uplink data when the UE does not obtain uplink sending resources;
  • a determining unit 1002 is configured to determine whether to perform preprocessing on the uplink data according to the configured uplink sending resource when the UE obtains the uplink sending resource.
  • the uplink data includes first data
  • the determining unit 1002 is specifically configured to determine that the UE preprocesses the first data in a case where the configured amount of the uplink transmission resource is greater than the first threshold;
  • the sending unit 1001 is further configured to send the preprocessed first data through the first link.
  • the uplink data includes second data
  • the sending unit 1001 is specifically configured to send the second data through the second link without preprocessing the second data when the UE does not obtain uplink transmission resources.
  • FIG. 11 is a schematic structural diagram of another terminal device according to an embodiment of the present application. As shown in FIG. 11, the terminal device includes:
  • a preprocessing unit 1101, configured to preprocess uplink data to obtain third data if the UE does not obtain uplink transmission resources
  • the determining unit 1102 is configured to determine whether to send the fourth data through the third link according to a delay in obtaining the uplink sending resource by the UE, and the fourth data includes part or all of the third data.
  • the determining unit 1102 is specifically configured to determine that the fourth data is sent over the third link when the delay in acquiring the uplink sending resource is not greater than the second threshold;
  • the terminal device further includes:
  • the sending unit 1103 is further configured to send fourth data through a third link.
  • the determining unit 1102 is specifically configured to determine that the fourth data is not sent through the third link when the delay in acquiring the uplink sending resource is greater than the second threshold;
  • the sending unit 1103 is further configured to send fourth data through a fourth link.
  • the sending unit 1103 is specifically configured to determine the data amount of the fourth data according to the resource amount of the uplink transmission resources configured by the third link; and send the fourth data through the third link.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may perform operations of the terminal device in the methods shown in FIGS. 6 to 9.
  • the terminal device may also perform operations of the terminal device shown in FIG. 10, or the terminal device may also perform operations of the terminal device shown in FIG. 11.
  • FIG. 12 shows only the main components of the terminal device.
  • the terminal device 1200 includes a processor, a memory, a radio frequency link, an antenna, and an input / output device.
  • the processor is mainly used for processing communication protocols and communication data, and controlling the entire terminal device, executing a software program, and processing the data of the software program, for example, for supporting the terminal device to execute the processes described in FIGS.
  • the memory is mainly used for storing software programs and data.
  • the radio frequency link is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • the terminal device 1200 may further include input and output devices, such as a touch screen, a display screen, and a keyboard, which are mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal equipment may not have an input / output device.
  • the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency link. After the radio frequency link processes the baseband signal, the radio frequency signal is sent out as an electromagnetic wave through the antenna.
  • the RF link receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data. .
  • FIG. 12 shows only one memory and a processor. In an actual terminal device, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and a central processing unit (CPU).
  • the baseband processor is mainly used to process communication protocols and communication data, and the CPU is mainly used to process the entire terminal.
  • the device controls, executes the software program, and processes the data of the software program.
  • the processor may be a network processor (NP) or a combination of a CPU and an NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.
  • the memory may include volatile memory (for example, random-access memory (RAM); the memory may also include non-volatile memory (for example, flash memory) , Hard disk (HDD) or solid-state drive (SSD); the storage may also include a combination of the above types of storage.
  • volatile memory for example, random-access memory (RAM)
  • non-volatile memory for example, flash memory
  • HDD Hard disk
  • SSD solid-state drive
  • the storage may also include a combination of the above types of storage.
  • the antenna and the radio frequency link having a transmitting and receiving function may be regarded as the transmitting and receiving unit 1201 of the terminal device 1200 and the processor having the processing function may be regarded as the processing unit 1202 of the terminal device 1200.
  • the terminal device 1200 may include a transceiver unit 1201 and a processing unit 1202.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • the device for implementing the receiving function in the transceiver unit 1201 may be regarded as a receiving unit
  • the device for implementing the transmitting function in the transceiver unit 1201 may be regarded as a transmitting unit, that is, the transceiver unit 1201 includes a receiving unit and a transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit.
  • the transceiver unit 1201 and the processing unit 1202 may be integrated into one device, or may be separated into different devices.
  • the processor and the memory may also be integrated into one device, or separated into different devices.
  • the transceiver unit 1201 may be configured to perform step 601 shown in FIG. 6 by sending a second data method over a second link.
  • the processing unit 1202 may be configured to execute the method shown in FIG. 6 to control the transceiver unit 1201 to execute step 601 shown in FIG. 6 and send the second data through the second link.
  • the processing unit 1202 may be further configured to pre-process uplink data and so on.
  • the transceiver unit 1201 may be further configured to execute the method shown in the sending unit 1001. Alternatively, it can also be used to execute the method shown in the sending unit 1103. It can be understood that, for example, the transceiver unit can separately execute the method shown in the sending unit 1001, and the transceiver unit can also execute the method shown in the sending unit 1001 under the control of the processor. How to implement the corresponding method is not limited.
  • the processing unit 1202 may be further configured to execute the method shown in the determination unit 1002, or used to execute the method shown in the determination unit 1102.
  • An embodiment of the present application further provides a computer-readable storage medium. All or part of the processes in the foregoing method embodiments may be completed by a computer program instructing related hardware.
  • the program may be stored in the computer storage medium. When the program is executed, the processes may include the processes of the foregoing method embodiments.
  • the computer-readable storage medium includes: a read-only memory (ROM) or a random access memory (RAM), a magnetic disk, or an optical disc, which can store various program code media.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), and the like.
  • the modules in the apparatus of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de transmission de données, et un dispositif terminal. Le procédé comprend les étapes suivantes : lorsqu'un UE de dispositif terminal envoie des données de liaison montante au moyen d'une première liaison et d'une seconde liaison et que la première liaison n'est pas configurée à l'aide d'une ressource de requête de planification de liaison montante, et lorsque l'UE n'acquiert pas de ressources d'envoi de liaison montante, l'UE ne traite pas les données de liaison montante, et envoie les données de liaison montante au moyen de la seconde liaison ; et lorsque l'UE acquiert les ressources d'envoi de liaison montante, l'UE détermine, en fonction des ressources d'envoi de liaison montante configurées, si les données de liaison montante doivent être prétraitées. De manière correspondante, l'invention porte également sur un dispositif correspondant. La mise en œuvre de la présente invention permet de réduire efficacement la discontinuité de transmission de données.
PCT/CN2019/101732 2018-08-22 2019-08-21 Procédé de transmission de données et dispositif terminal WO2020038391A1 (fr)

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CN201810959900 2018-08-22
CN201810959900.7 2018-08-22
CN201811405279.6 2018-11-22
CN201811405279.6A CN110858980B (zh) 2018-08-22 2018-11-22 数据传输方法及终端设备

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