CN112789879B

CN112789879B - Radio link failure processing method, network equipment and terminal equipment

Info

Publication number: CN112789879B
Application number: CN201980064866.XA
Authority: CN
Inventors: 卢前溪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2023-02-28
Anticipated expiration: 2039-04-30
Also published as: WO2020220355A1; CN112789879A

Abstract

A radio link failure handling method, a network device, a terminal device, a chip, a computer-readable storage medium, a computer program product, and a computer program, the method comprising: if the terminal equipment is in the first state, at least one of the following operations is executed: reporting failure to a network device, judging whether to perform duplicate transmission, modifying activated transmission resources, modifying transmission resources for the duplicate transmission, modifying the activated transmission resources or a service cell/cell list allowed to be used corresponding to the transmission resources for the duplicate transmission, reporting a modified duplicate transmission state, reporting the modified transmission resources, reporting resources for the duplicate transmission, and reporting the modified activated transmission resources or the service cell/cell list allowed to be used corresponding to the transmission resources for the duplicate transmission.

Description

Radio link failure processing method, network equipment and terminal equipment

Technical Field

The present invention relates to the field of information processing technologies, and in particular, to a radio link failure processing method, a network device, a terminal device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

Background

In 5G, the application scenarios are divided into 3 according to the service requirements: eMBB, mMTC, uRLLC. The Data replication transport and multi-connection (Data replication and multi-connection) issue is considered in the IIoT project, and for Data replication transport and multi-connection, NR IIoT WID (RP-190728) has described an architecture that can employ a combination of DC and CA, to further improve reliability. However, for this architecture, no relevant way of handling radio link failure is provided.

Disclosure of Invention

To solve the foregoing technical problems, embodiments of the present invention provide a radio link failure processing method, a network device, a terminal device, a chip, a computer-readable storage medium, a computer program product, and a computer program.

In a first aspect, a radio link failure processing method is provided, where the method is applied to a terminal device, and the terminal device performs data copy transmission combining carrier aggregation CA and dual connectivity DC, or the terminal device performs data copy transmission including at least two transmission resources, and the method includes:

if the terminal equipment is in the first state, executing at least one of the following operations:

reporting failure to a network device, judging whether to perform duplicate transmission, modifying activated transmission resources, modifying transmission resources for the duplicate transmission, modifying the activated transmission resources or a service cell/cell list allowed to be used corresponding to the transmission resources for the duplicate transmission, reporting a modified duplicate transmission state, reporting the modified transmission resources, reporting resources for the duplicate transmission, and reporting the modified activated transmission resources or the service cell/cell list allowed to be used corresponding to the transmission resources for the duplicate transmission.

In a second aspect, a radio link failure processing method is provided, which is applied to a network device, and includes:

configuring data copy transmission combining Carrier Aggregation (CA) and Dual Connectivity (DC) for a terminal device, or configuring data copy transmission comprising at least two transmission resources for the terminal device.

In a third aspect, a terminal device is provided, where the terminal device performs data copy transmission combining carrier aggregation, CA, and dual connectivity, DC, or performs data copy transmission including at least two transmission resources, and the terminal device includes:

the first processing unit executes at least one of the following operations if the terminal equipment is in the first state:

In a fourth aspect, a network device is provided, comprising:

and the second communication unit is used for configuring data copy transmission combining carrier aggregation CA and dual-connection DC for the terminal equipment, or configuring data copy transmission containing at least two transmission resources for the terminal equipment.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In a seventh aspect, a chip is provided for implementing any one of the first to second aspects or the method in each implementation manner of the second aspect.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method according to the first aspect or any one of the aspects or the implementation manners thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of the first or second aspect or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of the first or second aspect or implementations thereof.

A tenth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of the first or second aspect or implementations thereof.

By adopting the scheme, under the scene of combining DC and CA, or when the terminal equipment executes data copy transmission with more than 2 transmission resources, if the terminal equipment determines that a wireless link has a problem, the terminal equipment can determine how to process the transmission resource with the problem. Therefore, protocol specification can be completed, and a control mode of data copying and transmission is increased, so that the control of the data copying and transmission is more flexible.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2 is a first flowchart illustrating a radio link failure processing method according to an embodiment of the present invention;

FIG. 3 is a block diagram of a data replication transmission;

FIGS. 4-6 are various diagrams of a combined dual connectivity architecture;

fig. 7 is a flowchart illustrating a radio link failure processing method according to an embodiment of the present invention;

fig. 8 is a schematic view of a scenario of a method for handling radio link failure according to an embodiment of the present invention;

fig. 9 is a schematic view of another scenario of a radio link failure processing method according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a network device structure according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

FIG. 13 is a schematic block diagram of a chip provided by an embodiment of the present application;

fig. 14 is a schematic diagram 2 of a communication system architecture provided in an embodiment of the present application.

Detailed Description

So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

For example, a communication system 100 applied in the embodiment of the present application may be as shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with UEs located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Network device (NodeB, NB) in a WCDMA system, an evolved Node B (eNB, eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 also includes at least one UE120 located within the coverage area of the network device 110. "UE" as used herein includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), digital Subscriber Line (DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., for a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or another UE's device configured to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A UE that is arranged to communicate over a radio interface may be referred to as a "radio communication terminal", "radio terminal" or "mobile terminal".

Optionally, the UEs 120 may perform direct-to-Device (D2D) communication therebetween.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

An embodiment of the present invention provides a radio link failure processing method, which is applied to a terminal device, where the terminal device performs data replication transmission combining carrier aggregation CA and dual connectivity DC, or the terminal device performs data replication transmission including at least two transmission resources, as shown in fig. 2, where the method includes:

step 21: if the terminal equipment is in the first state, executing at least one of the following operations:

Wherein the first state is indicative of at least one of: the radio link of the activated transmission resource or the transmission resource for transmitting the duplicated data has a problem, the radio link fails, the transmission quality has a problem, and the transmission quality is less than or equal to the threshold.

It should be noted that, in this embodiment, the transmission resource may specifically be: any one of carrier, path (Leg), RLC entity, logical channel, serving cell/cell list allowed to be used.

Optionally, the number of transmission resources may be network indicated or configured.

Optionally, the number of activated transmission resources may be network indicated or configured.

Alternatively, the number of transmission resources or activated transmission resources may be one of 1,2,3,4.

For the CA scenario, the data replication function of the PDCP is utilized in the scheme supporting data replication transmission (data replication), so that the replicated PDCP PDUs are transmitted to two RLC entities (two different logical channels) respectively, and finally the replicated PDCP PDUs can be transmitted on different physical layer aggregation carriers, thereby achieving frequency diversity gain to improve data transmission reliability. As shown in DRB 1 and DRB 3 in fig. 3. For the DC scenario, the scheme supporting data replication transmission (data replication) utilizes the replicated data function of the PDCP, so that the replicated PDCP PDUs are respectively transmitted to two RLC entities, which respectively correspond to different MAC entities, as shown in DRB2 in fig. 3.

The scenario of CA and DC combining will be described with reference to the architectures shown in fig. 4, 5, and 6.

In the combined CA and DC scenario, the possible duplicated transmission architecture of the present solution is at least one of the following:

fig. 4 shows that there are at most two MAC entities, and each MAC entity is configured with at most two RLC entities.

The differences between fig. 5 and fig. 4 are: the configurable RLC entity number of each MAC entity can be different, and the total number is 4;

the differences between fig. 6 and 5 are: the number of configurable RLC entities of each MAC entity can be different, and the total number is 4 at most.

Optionally, in other implementation manners, the number of MAC entities may be more than two.

Optionally, in other implementations, the number of RLC entities configured or activated by each MAC entity may be the same or different.

Optionally, in other implementation manners, each MAC entity configures or activates more than two RLC entities at most, or may be equal to two RLC entities, or may be smaller than two RLC entities.

Correspondingly, in another embodiment, a radio link failure processing method is provided, and is applied to a network device, as shown in fig. 7, the method includes:

step 31, configuring data replication transmission combining carrier aggregation CA and dual connectivity DC for the terminal device, or configuring data replication transmission including at least two transmission resources for the terminal device.

Wherein each logical channel is configured with at least one allowed serving cell/cell list

In addition, the network device may also configure transmission resources, such as a logical channel, corresponding to a serving cell allowed to be used, or a cell list, for the terminal device, and the method further includes:

and configuring at least one service cell/cell list which is allowed to be used for each logical channel in the at least two logical channels for the terminal equipment to copy the data transmission.

The following describes the solution provided by the present embodiment in various scenarios based on the foregoing structural introduction:

and in a scene 1, when the terminal equipment is determined to be in the first state, reporting a problem or failure to the network equipment. Specifically, the method comprises the following steps:

the method further comprises the following steps: the method comprises the steps of obtaining at least one service cell/cell list which is allowed to be used and corresponds to each transmission resource in at least two transmission resources configured for the terminal equipment by the network equipment.

For example, the at least one allowed serving cell/cell list corresponding to each logical channel may be configured for the terminal device by the network device.

In this scenario, the terminal device performs data copy transmission, or the terminal device is in a data copy transmission state.

The executing of the data copy transmission with respect to the terminal device or being in the data copy transmission state includes at least one of:

CA and DC combined data copy transmission, or data copy transmission of at least two transmission resources is configured; for example, the network device may configure the terminal device with CA, DC combined data duplication transmission, or configure the terminal device with at least two, e.g., 3, logical channels of data duplication transmission.

Activating CA and DC combined data copy transmission or data copy transmission of at least two transmission resources; it can be understood that, on the basis of the configuration, the data copy transmission based on the configuration or the data copy transmission of the configured plurality of logical channels is activated, and at this time, it is equivalent to control the terminal device to start performing the data copy transmission; or, on the basis of the configuration, at least part of the configured data copy transmission or the configured data copy transmission of the plurality of logical channels is activated, which is equivalent to controlling the terminal device to start executing the data copy transmission based on at least part of the data copy transmission configuration.

The CA and DC combined data copy transmission or the data copy transmission of at least two transmission resources is in an active state; the difference from the foregoing is that this method does not focus on when the active state of data copy transmission is entered, but only concerns that the terminal device is in the active state at the present time.

And acquiring a data copy transmission indication of the network equipment, or a data copy transmission indication combined by the CA and the DC, or a data copy transmission indication of at least two transmission resources. Here, the network device sends a data copy transmission instruction to the terminal device, which may be understood as the network device instructing the terminal device to start data copy transmission based on configuration, or the network setting instructing the terminal device to activate data copy transmission, or the network setting instructing the terminal device to activate specific data copy transmission; the terminal device can be specifically instructed to perform CA and DC combined data copy transmission, and can also be instructed to perform data copy transmission of a plurality of logical channels; of course, it is also possible to instruct data copy transmission, and the terminal device determines whether to perform CA, DC combined data copy transmission or data copy transmission of a plurality of logical channels according to the content configured in advance.

Wherein data replication transmission of the at least two transmission resources is configured, comprising: at least two logical channels, or paths, or carriers, or RLC entities, or data replication transmissions of allowed serving cells/cell lists are configured;

the activating of data replication transmission of at least two transmission resources comprises: activating data replication transmission of at least two logical channels, or paths, or carriers, or RLC entities, or allowed serving cells/cell lists;

the data replication transmission of the at least two transmission resources is in an active state, including: at least two logical channels, or paths, or carriers, or RLC entities, or data replication transmissions of allowed used serving cells/cell lists are in an active state.

And/or, in this scenario, the following processing may be further included: and judging whether the terminal equipment is configured with CA and DC combined data copy transmission or is configured with data copy transmission of at least two transmission resources.

Whether the terminal equipment can perform data copy transmission is determined by judging whether the terminal equipment is configured with CA and DC combined data copy transmission, and further whether the terminal equipment is controlled to perform data copy transmission currently can be determined;

alternatively, it may be determined whether the terminal device is configured with data duplication transmission of at least two transmission resources, for example, whether the terminal device is configured with 3 (or more) logical channels or RLC entities for data duplication transmission, and if so, it may be further determined that the terminal device performs data duplication transmission, or it may be determined that the terminal device is in a data duplication transmission state.

In response to the foregoing, the network device may configure the terminal device so that the terminal device performs data copy transmission, which may include at least one of the following:

configuring CA and DC combined data copy transmission for the terminal equipment, or configuring data copy transmission of at least two transmission resources for the terminal equipment;

instructing the terminal equipment to activate CA and DC combined data copy transmission, or activate data copy transmission of at least two transmission resources, or activate data copy transmission;

instructing the terminal device to perform data copy transmission, or performing data copy transmission by combining CA and DC, or performing data copy transmission of at least two logical channels.

Configuring data replication transmission of at least two transmission resources for a terminal device, comprising: a configuration to send a data duplicate transmission of one of at least two logical channels, leg legs, carriers, RLC entities, serving cells/cell lists allowed to be used;

activating data replication transmission of at least two transmission resources, comprising: instructing the terminal device to activate data replication transmission of one of at least two logical channels, leg, carrier, RLC entity, allowed serving cell/cell list.

Correspondingly, in the scheme provided in this scenario, how to determine whether the terminal device is in the first state may further include: judging that the activated transmission resource or the transmission resource for transmitting the duplicated data is configured or only comprises the SCell, if so, determining that the terminal equipment is in a first state;

or judging whether the terminal equipment is in the first state or not based on a first preset condition.

Still alternatively, it may be determined whether the terminal device is in the first state based on determining that only the SCell is configured or corresponding to the activated transmission resource or the transmission resource for transmitting the duplicated data and whether the first preset condition is satisfied.

Specifically, it may be determined whether the terminal device is in the first state based on a first preset condition when only the secondary cell SCell is configured/corresponding to the activated transmission resource or the transmission resource for transmitting the duplicated data.

Wherein the first preset condition comprises at least one of:

detecting transmission resources with problems or transmission resources with the maximum retransmission times of RLC, wherein the configured service cell allowed to be used only comprises SCell;

detecting transmission resources with problems or transmission resources with the RLC reaching the maximum retransmission times, wherein the mapped or used carrier is the carrier of the SCell;

the transmission resource with problems or the transmission resource with the maximum retransmission times of the RLC, and the configured service cell allowed to be used only comprises the SCell;

the transmission resource with problems or the transmission resource with the RLC reaching the maximum retransmission times, and the used or mapped carrier is the carrier of the SCell;

the activated transmission resources or the transmission resources for transmitting the duplicated data are configured with at least one set of service cells/cell lists allowed to be used;

the transmission resource with problems or the transmission resource with the maximum number of times of RLC retransmission is configured with at least one set of service cell/cell list allowed to be used.

It should be noted that, the difference between the transmission resource with the detected problem or the transmission resource with the RLC reaching the maximum retransmission number and the transmission resource with the detected problem or the transmission resource with the RLC reaching the maximum retransmission number is that the detection of the transmission resource with the detected problem or the transmission resource with the detected RLC reaching the maximum retransmission number refers to performing subsequent processing when the terminal device detects that the logical channel exists; the transmission resource with a problem or the transmission resource with the RLC reaching the maximum retransmission number is concerned with whether the current state of the transmission resource is problematic, and specifically, the terminal device determines that the transmission resource has a problem or determines that the RLC reaches the maximum retransmission number by detection of the terminal device or indication of other information, and does not care about the fact.

In addition, in the scheme provided in this embodiment, the reporting may be determined by further combining with the first condition when at least one of the CA and DC combined data replication transmission, or the data replication transmission of at least two transmission resources is configured, and the CA and DC combined data replication transmission or the data replication transmission of at least two transmission resources is in an active state, and acquires a data replication transmission instruction of the network device, or the CA and DC combined data replication transmission instruction, or the data replication transmission instruction of at least two transmission resources. For example:

when determining that the data replication transmission combining the CA and the DC, or the data replication transmission of at least two transmission resources is configured, or when determining that the data replication transmission combining the CA and the DC, or the data replication transmission of at least two transmission resources is configured, whether the terminal device is in the first state can be determined according to whether the RLC reaches the maximum retransmission number, and further, whether to perform failure reporting is determined; it should be understood that, at this time, it may also be determined whether to perform failure reporting by combining data copy transmission of CA and DC, or configuring data copy transmission of at least two transmission resources, or detecting that a carrier mapped by a transmission resource in question is an SCell carrier, that is, the foregoing multiple conditions may be used in combination.

Or, it may be determined that data replication transmission combined by CA and DC or data replication transmission of at least two transmission resources is in an active state, or, when data replication transmission combined by CA and DC or data replication transmission of at least two transmission resources is activated, it may be further determined whether to report by combining at least some conditions in the first condition, for example, it may be determined to perform failure reporting by combining with determining that the RLC reaches the maximum number of retransmissions; at this time, at least one set of service cell/cell list allowed to be used can be configured by further combining the transmission resources reaching the maximum retransmission times of the RLC to judge whether to execute failure reporting; or, the carrier corresponding to the transmission resource for which the RLC has reached the maximum retransmission number may be used as the SCell carrier to determine to perform failure reporting.

As another example, when the data duplication transmission indication of the network device, or the data duplication transmission indication combined by CA and DC, or the data duplication transmission indication of at least two transmission resources is obtained, the maximum retransmission number of the RLC may be further combined to determine to perform failure reporting. Of course, as described above, more conditions may be combined for determination.

Finally, it should be understood that, as described above for the configuration, activation, and indication conditions, in the actual processing, at least two of the configuration, activation, and indication conditions and part of the first conditions may be used in combination, for example, when CA and DC combined data copy transmission is configured and the CA and DC combined data copy transmission is in an active state, if the RLC reaches the maximum retransmission number, or a carrier corresponding to a transmission resource reaching the maximum retransmission number is a carrier of the SCell, it is determined to perform reporting.

Wherein the problematic transmission resource may be at least one of the following cases: in an out-of-sync state, X times or continuously receiving X times of out-of-sync indications, in a second time duration in the out-of-sync state, detecting a physical layer problem, T310 overtime, receiving a random access error indication, Y times of HARQ-NACK, Y times of RLC-NACK, reaching or exceeding a survival time survivability time, overtime a timer corresponding to the survival time survivability time, reaching the survivability time of a specific bearer/QoS flow/PDU session/data packet or overtime corresponding to the second time duration, and PDCP discard timer overtime; wherein X and Y are each an integer of 1 or more.

Further, in this scenario, after the report fails, the terminal device may also transfer data that is not transmitted or fails to be transmitted to a new transmission resource for transmission, specifically: and forwarding the data which is not transmitted or failed to be transmitted in the original activated transmission resources with the radio link failure or the transmission resources originally used for transmitting the duplicated data to the modified activated transmission resources or the modified transmission resources used for data duplicated transmission for transmission.

The data that is not transmitted or failed to be transmitted may be at least one of the following: RLC SDU, RLC SDU segmentation, PDCP PDU, MAC SDU, MAC subpPDU, MAC PDU, or RLC PDU.

In this scenario, when the executed operation is a failure in reporting to the network device;

the processing performed by the network device may include: when receiving the report failure of the terminal equipment, executing at least one of the following operations:

sending the modified activated transmission resources or the allowed service cells/cell lists corresponding to the transmission resources for the duplicate transmission to the terminal equipment;

the modified activated transmission resources or the transmission resources for data replication transmission are transmitted to the terminal device.

Reconfiguring a configuration of a data replication transmission of at least two transmission resources, and/or sending the reconfigured transmission resources or transmission resources for the data replication transmission to the terminal device.

Correspondingly, on the terminal equipment side, the method further comprises at least one of the following steps: acquiring a service cell/cell list which is sent by network equipment and allowed to be used and corresponds to the modified and activated transmission resources or the transmission resources used for copying transmission;

acquiring modified activated transmission resources or transmission resources for data copy transmission sent by network equipment;

and acquiring the reconfigured transmission resource sent by the network equipment or the transmission resource used for data replication transmission.

That is to say, in this scenario, the terminal device reports a radio link failure to the network device, so that the network device modifies the transmission resource, specifically, the network device may determine to modify an activated logical channel or modify a modification instruction for replicating a logical channel of transmission for the terminal device; wherein, the modification indication may include, in addition to the identifier of the modified logical channel, an identifier of a Cell Group (CG) corresponding to the modified logical channel.

Or, the terminal device reports the radio link failure to the network device, and the network device may modify, for the terminal device, the serving cell or the cell list that is allowed to be used and corresponds to the transmission resource. For example, the allowed serving cell or the allowed cell list corresponding to the logical channel or RLC entity is modified.

Additionally, the method further comprises at least one of:

transmitting a transmission resource update indication; for example, an indication of a logical channel update may be sent to the network device;

transmitting an RLC control PDU;

sending an RLC status report; for example, RLC control PDUs or RLC status reports are sent to the network device.

Submitting the received data packet, or RLC SDU, or the recombined RLC SDU to a high layer;

triggering a status report; the triggering refers to that when it is determined that the radio link fails or has a problem, a status report may be sent to the network device, where the status report includes an indication that the current terminal device has failed or has a problem in the radio link and/or an indication that a resource for data replication transmission/data replication transmission of at least two transmission resources has a problem or a radio link fails.

Triggering a status report at the modified transmission resource; that is, after acquiring the modified transmission resource sent by the network device, such as the logical channel, the terminal device triggers the status report, and/or transmits the status report on the modified logical channel.

For the modified transmission resource, the first transmission opportunity sends a status PDU to the lower layer; for example, the status information may be sent to the lower layer at the first transmission opportunity in the modified logical channel, and specifically, the status information may be a status PDU, such as an RLC status PDU.

Starting or restarting a timer for the modified transmission resources; that is, after modifying the transmission resource, the terminal device controls itself to adjust the start of the timer for the transmission resource, for example, the timer for the logical channel corresponding to the modified transmission resource may be restarted, or the timer for the RLC entity corresponding to the modified transmission resource may be restarted, or a new timer may be set for the modified logical channel, and the terminal device starts the new timer corresponding to the logical channel when the logical channel is enabled. Optionally, parameters or state variables of the transmission resources (e.g. RLC entities) before and/or after the modification are reset.

After receiving the state report, updating the state variable; that is, the terminal device receives the status report sent by the network device, and updates its own status variable according to the status report.

Stopping or restarting the timer after receiving the status report; and when the state report is received, the terminal equipment stops the timer corresponding to the modified transmission resource or restarts timing. Or, when receiving the status report, the terminal device stops the timer corresponding to the transmission resource before modification, or restarts timing. Or, the timer does not correspond to a certain transmission resource, but corresponds to a status, that is, when the status report is received, it can be understood that the network device modifies the transmission resource for the terminal device again, and at this time, the terminal device stops the timer, or restarts timing.

When receiving an acknowledgement of an RLC SDU or partial RLC SDU, indicating successful transmission to a higher layer; for example, the terminal device learns the receiving condition of the data transmitted on the transmission resource by the network device by receiving the ACK sent by the network device, and as long as the network device can feed back the ACK for at least part of all the sent RLC SDUs, it can consider that the current data transmission is successful; or, the network device may also feed back ACK for all RLC SDUs sent by the terminal device, and the data transmission of the terminal device may be considered to be successful; alternatively, when the network device receives an ACK fed back for at least part of all the sent RLC SDUs, it may indicate to the higher layer that at least part of the RLC SDUs or PDCP PDUs are successfully transmitted (corresponding to the packet identifier or SN).

When the unacknowledged RLC SDU or partial RLC SDU is received, the RLC SDU or partial RLC SDU is retransmitted. In contrast to the previous one, the focus of this item is on how to determine that the transmission was unsuccessful and to determine what to retransmit. For example, when the terminal device sends an RLC SDU and receives NACK unsuccessfully, all RLC SDUs may be retransmitted; or, when the terminal device receives NACK for only part of RLC SDUs, it may retransmit all RLC SDUs; alternatively, the terminal device may retransmit the partial RLC SDU when it receives NACK for the partial RLC SDU.

The present scenario is explained with reference to fig. 8, where in the example in fig. 8, the transmission resource is a logical channel/RLC entity, specifically:

step 71, the network, such as the base station, configures data replication transmission (replication), which is replication of CA combined with DC or replication of at least three RLC entities. Of course, at least two RLC entities may be configured.

Step 72: the network, such as the base station, informs the UE of the duplicate configuration through an RRC reconfiguration message. Further, the network may indicate the logical channel or RLC entity to use when duplicate activation and/or deactivation. In addition, at least one allowedServingCells list can be configured for the logical channels.

Step 73: the terminal device performs data transmission, and it is understood that the terminal device determines to perform data copy transmission, or data copy transmission configuration, or copy data transmission activation, when at least one of the following conditions is satisfied:

CA combines DC duplicate or at least two RLC entity duplicate configuration;

CA in combination with DC duplification or at least two RLC entity duplification activation;

duplicate configuration of at least two logic channels or legs or carriers;

duplicate configuration activation of at least two logical channels or legs or carriers.

On the basis, when the first condition is met, the User Equipment (UE) considers that the radio link is in a problem, and/or the UE reports an RLC failure. The first condition has already been described in the foregoing, and is not described in detail here.

At this time, the UE may trigger or initiate a failure information procedure.

Optionally, the method further includes:

storing or reporting the reason of the failure;

wherein the reason for the failure includes one of the following types: failure of duplicate transmission, failure of combined duplicate transmission, failure of CA duplicate transmission.

Optionally, the first condition may further include the data copy transmission configuration, or the copy data transmission activation, or the execution data copy transmission.

Step 74, the UE reports failure information in FailureInformation. Optionally, the reported failureType may be extended by a new type: combinationduplexing. The UE indicates the failure type as duplicate or combinationduplicate. In addition, the information of the reason for reporting the failure may further include at least one of the following: failed logical channel identification, CG identification. Further, the report information may carry at least one of the following: recommending a modified duplicate transmission state, recommending modified transmission resources, recommending resources for duplicate transmission, recommending a list of allowed serving cells/cells corresponding to modified activated transmission resources, and recommending a list of allowed serving cells/cells corresponding to modified transmission resources for duplicate transmission.

Correspondingly, the network modifies at least one of the following according to the report of the UE: duplicate data transmission status (adopted or not), allowedServingCells, CG, RLC entity/logical channel transmitting duplicate, RLC entity/logical channel not transmitting duplicate.

That is, the terminal device forwards a data packet that was not transmitted or was not successfully transmitted on the RLC entity that previously transmitted the duplicated data to the modified RLC entity. Optionally, after receiving the FailureInformation, the receiving end delivers the received or successfully received data packet on the logical channel with the problem to a higher layer (PDCP).

Scenario 2, this scenario is different from the foregoing scenario in that the terminal device modifies the transmission resource, for example, the terminal device modifies an activated logical channel, or modifies a logical channel for transmitting duplicated data, and modifies a data duplication transmission state (e.g., whether to use or activate duplicated data transmission, or data duplication transmission of at least two transmission resources). The concrete description is as follows:

For example, the terminal device may be configured to obtain at least one allowed serving cell/cell list for each of at least two logical channels, where the at least two logical channels are configured by the network device for the terminal device.

The manner for determining whether the terminal device performs data copy transmission or is in a data copy transmission state and the manner for determining whether the radio link fails are the same as those in scenario 1, and are not repeated here.

The difference from scenario 1 is that in this scenario, it is not necessary for the network device to determine whether data copy transmission is activated or used for the terminal device, or whether data copy transmission of at least two transmission resources is activated or used is determined by the terminal device itself;

in this scenario, the method further includes: the terminal device sends to the network device an indication of the modified data copy transmission status, or the data copy transmission activation or use or not of the at least two transmission resources.

Accordingly, the network device receives the modified data copy transmission status sent by the terminal device, or the indication of the activation or use or non-use of the data copy transmission of the at least two transmission resources.

And/or, in the present scenario, the network device is not required to configure modified transmission resources for the terminal device, which is determined by the terminal device itself; examples include:

judging whether to carry out the duplicate transmission, modifying the activated transmission resource, modifying the transmission resource used for the duplicate transmission, and modifying the activated transmission resource or the service cell/cell list which is allowed to be used and corresponds to the transmission resource used for the duplicate transmission.

Correspondingly, the method further comprises the following steps: the terminal equipment sends a service cell/cell list which is allowed to be used and corresponds to the transmission resource which is activated by modification or the transmission resource which is used for copying transmission to the network equipment;

and/or sending the modified activated transmission resources or transmission resources for data replication transmission to the network device.

Correspondingly, the network equipment receives a service cell/cell list which is allowed to be used and corresponds to the modified activated transmission resource or the transmission resource used for the duplicate transmission sent by the terminal equipment;

and/or the network equipment receives the transmission resource which is sent by the terminal equipment and is modified to be activated or used for data replication transmission.

That is to say, in this scenario, the terminal device modifies the transmission resource, and at this time, the terminal device may report to the network device, or may not report, for example, if reporting, the content that can be reported includes at least one of the following: the method comprises the steps of modifying the identification of a logical channel, the identification of a Cell Group (CG) corresponding to the modified logical channel, failure indication, radio link problem indication, failure reason, radio link problem reason, the identification of a logical channel with problems, carrier identification and corresponding CG identification.

Or, the terminal device modifies the allowed serving cell or cell list corresponding to the transmission resource, and may report the modified allowed serving cell or cell list to the network device as well, or may not report the modified allowed serving cell or cell list. For example, the allowed serving cell or the allowed cell list corresponding to the logical channel or RLC entity is modified.

Additionally, the method further comprises at least one of:

transmitting an RLC control PDU;

triggering a status report; wherein the triggering means that when it is determined that the radio link fails or has a problem, a status report may be sent to the network device, and the status report includes an indication that the current terminal device has failed or has a problem, and/or an indication that a resource for data replication transmission/data replication transmission of at least two transmission resources has a problem or a radio link failure.

Starting or restarting a timer for the modified transmission resources; that is, after modifying the transmission resource, the terminal device controls itself to adjust the start of the timer for the transmission resource, for example, the timer of the logical channel corresponding to the modified transmission resource may be restarted, or the timer of the RLC entity corresponding to the modified transmission resource may be restarted, or a new timer may be set for the modified logical channel, and the terminal device starts the new timer corresponding to the logical channel when the logical channel is enabled. Optionally, parameters or state variables of the transmission resources (e.g. RLC entities) before and/or after modification are reset.

Stopping or restarting the timer after receiving the status report; and when the state report is received, the terminal equipment stops the timer corresponding to the modified transmission resource or restarts timing. Or, the timer does not correspond to a certain transmission resource, but corresponds to a status, that is, when the status report is received, it can be understood that the network device modifies the transmission resource for the terminal device again, and at this time, the terminal device stops the timer, or restarts timing.

When the unacknowledged RLC SDU or partial RLC SDU is received, the RLC SDU or partial RLC SDU is retransmitted. In contrast to the previous one, this piece focuses on how to determine that the transmission was unsuccessful and to determine what to retransmit. For example, when the terminal device sends an RLC SDU and receives NACK unsuccessfully, all RLC SDUs may be retransmitted; or, when the terminal device receives NACK for only part of RLC SDUs, it may retransmit all RLC SDUs; alternatively, the terminal device may retransmit the partial RLC SDU when it receives NACK for the partial RLC SDU.

With reference to fig. 9, the present scenario is described, which includes:

step 81, configuring, by the network, a duplicate, where the duplicate is a duplicate of a CA combined with a DC, or at least two RLC entities.

Step 82, the network notifies the UE of the duplicate configuration through the RRC reconfiguration message. Further, the network may indicate the logical channel or RLC entity to use when duplicate activation and/or deactivation. In addition, at least one allowedServingCells list can be configured for the logical channels.

When the first condition is satisfied, the UE determines whether to use the duplicated data transmission, or the UE reselects/modifies a logical channel that is activated or used for transmitting the duplicated transmission, or the UE reselects or modifies allowedServingCells used when transmitting the logical channel data, step 83. The first condition is the same as the above and is not described again.

It should be further noted that, in this scenario, the UE determines whether to use duplicate data transmission, or reselects/modifies an activated logical channel or a logical channel used for transmitting the duplicate data transmission, or reselects or modifies an allowedServingCells used for transmitting the logical channel data transmission, and may further include at least one of the following additional conditions:

the network equipment configures the UE to select or modify the transmission resource of the duplicate transmission;

the network equipment configures the UE to modify the transmission resource of the duplicate transmission when the link problem or failure occurs; both of the two characteristics indicate that the network device can configure the terminal device with the relevant capability, for example, the network device can configure the UE with the capability of modifying or selecting the transmission resource for the duplicate transmission no matter whether the UE has a link failure; or, the network equipment directly configures the UE with the capability of modifying the transmission resource of the duplicate transmission when the UE has link problems or failures.

The UE has the capability to select or modify transmission resources for the duplicate transmission; in contrast to the foregoing, this item focuses on the capabilities of the UE itself, not on whether it is configured by the network equipment, but on whether its own currently provided capabilities include the capability to select or modify the transmission resources of the duplicate transmission;

predefining or configuring conditions for selecting or modifying transmission resources for the duplicate transmission; that is, the UE side or the network device sets a corresponding condition for the UE, and when the UE satisfies the condition, the UE can select or modify the transmission resource of the duplicate transmission. The condition may be understood as a threshold, for example, when the quality of a certain transmission resource is lower than the preset threshold or the number of RLC retransmissions reaches the preset threshold, the transmission resource for the duplicate transmission may be selected or modified. Alternatively, it may also be that when the UE modifies the transmission resources or replicates the transmission, the transmission resources satisfying the condition are selected.

In addition, the terminal device may also forward the data packet that is not transmitted or has not been successfully transmitted on the transmission resource for transmitting the duplicated data to the modified transmission resource. Specifically, the terminal device may also forward a data packet that is not transmitted or successfully transmitted on the RLC entity that transmits the duplicated data to the modified RLC entity.

Finally, it should be noted that the foregoing

scenarios

1 and 2 may also be used in combination; for example, the UE may report a problem or a failure by using the scheme of scenario 1, select or modify a transmission resource by itself based on the scheme of scenario 2, and then perform subsequent processing based on the transmission resource selected or modified by the UE itself.

Therefore, by adopting the above scheme, in a scenario where DC and CA are combined, or when the terminal device performs data copy transmission of more than 2 transmission resources, if the terminal device determines that a problem occurs in a wireless link, it can determine how to handle the transmission resource having the problem. Therefore, protocol specification can be completed, and a control mode of data copying and transmission is increased, so that the control of the data copying and transmission is more flexible.

An embodiment of the present invention provides a terminal device, where the terminal device performs data copy transmission combining carrier aggregation CA and dual connectivity DC, or the terminal device performs data copy transmission including at least two transmission resources, as shown in fig. 10, where the terminal device includes:

a first processing unit 1001, if the terminal device is in the first state, performing at least one of the following operations:

Wherein the first state is indicative of at least one of: the active transmission resource or the transmission resource for transmitting the duplicated data has a problem in a radio link, a radio link failure, and a transmission quality, and the transmission quality is less than or equal to a threshold.

Accordingly, in another embodiment, a network device is provided, as shown in fig. 11, the method includes:

the second communication unit 1102 is configured to configure data replication transmission combining carrier aggregation CA and dual connectivity DC for the terminal device, or configure data replication transmission including at least two transmission resources for the terminal device.

Wherein each logical channel is configured with at least one service cell/cell list allowed to be used

The following describes the scheme provided by the present embodiment from various scenarios based on the foregoing structural introduction:

the terminal device further includes: the first communication unit 1002 is configured to acquire at least one serving cell/cell list that is allowed to be used and corresponds to each of at least two transmission resources configured by a network device for a terminal device.

In response to the foregoing, the network device may configure the terminal device so that the terminal device performs data copy transmission, such as the second communication unit 1102, and performs at least one of the following:

Configuring data replication transmission of at least two transmission resources for a terminal device, comprising: a configuration to send a data duplicate transmission of one of at least two logical channels, leg, carrier, RLC entity, serving cell/cell list allowed to be used;

Accordingly, the first processing unit 1001 may further include at least one of:

the transmission resource with problems or the transmission resource with the maximum retransmission times of the RLC is used or mapped as the carrier of the SCell;

the transmission resources that are in question, or the transmission resources for which the RLC has reached the maximum number of retransmissions, are configured with at least one set of serving cell/cell list that is allowed to be used.

Further, in this scenario, after the report fails, the terminal device may also transfer data that is not transmitted or fails to be transmitted to a new transmission resource for transmission, specifically: the first processing unit 1001 forwards, to the modified activated transmission resource or the modified transmission resource for data copy transmission, the data that is not transmitted or failed to be transmitted in the original activated transmission resource or the transmission resource originally used for transmitting the copy data where the radio link failure occurs.

the processing performed by the network device may include: when receiving that the terminal device fails to report, the second communication unit 1102 performs at least one of the following operations:

Reconfiguring a configuration of data replication transmission of the at least two transmission resources, and/or sending the reconfigured transmission resources or the transmission resources for data replication transmission to the terminal device.

Accordingly, on the terminal device side, the first communication unit 1002 performs at least one of: acquiring a service cell/cell list which is sent by network equipment and is allowed to be used and corresponds to the modified and activated transmission resources or the transmission resources used for copying transmission;

In addition, the first communication unit 1002 further performs at least one of:

transmitting an RLC control PDU;

Submitting the received data packet, or RLC SDU, or recombined RLC SDU to a high layer;

After receiving the status report, updating the status variable; that is, the terminal device receives the status report sent by the network device, and updates its own status variable according to the status report.

When the unacknowledged RLC SDU or partial RLC SDU is received, the RLC SDU or partial RLC SDU is retransmitted. In contrast to the previous one, this piece focuses on how to determine that the transmission was unsuccessful and to determine what to retransmit. For example, when the terminal device sends an RLC SDU and receives NACK unsuccessfully, all RLC SDUs may be retransmitted; or, when the terminal device receives NACK for only part of RLC SDUs, it may retransmit all RLC SDUs; alternatively, the terminal device may retransmit a partial RLC SDU when it receives NACK for the partial RLC SDU.

Optionally, the first processing unit 1001 stores or reports the reason for the failure through the first communication unit 1002;

the first communication unit 1002 obtains at least one allowed serving cell/cell list corresponding to each transmission resource in at least two transmission resources configured for the terminal device by the network device.

The manner for determining whether the terminal device performs data copy transmission or is in a data copy transmission state and the manner for determining whether the radio link fails are the same as those in scenario 1, and are not repeated herein.

in this scenario, the first communication unit 1002 sends the modified data copy transmission status, or an indication of activation or use or non-use of data copy transmission of the at least two transmission resources, to the network device.

Accordingly, the network device second communication unit 1102 receives the modified data duplication transmission status sent by the terminal device, or the indication of activation or use or non-use of data duplication transmission of at least two transmission resources.

And/or, in this scenario, the network device is not required to configure modified transmission resources for the terminal device, and the transmission resources are determined by the terminal device itself; examples include:

the first processing unit 1001 determines whether to perform duplicate transmission, modifies an active transmission resource, modifies a transmission resource used for the duplicate transmission, and modifies a serving cell/cell list allowed to be used corresponding to the active transmission resource or the transmission resource used for the duplicate transmission.

Correspondingly, the first communication unit 1002 sends, to the network device, a serving cell/cell list allowed to be used corresponding to the transmission resource for modifying the activated transmission resource or the transmission resource for the duplicate transmission;

Correspondingly, the second communication unit 1102 of the network device receives the serving cell/cell list which is allowed to be used and corresponds to the transmission resource which is sent by the terminal device and is modified to be activated or used for copying transmission;

and/or the receiving terminal device sends the modified activated transmission resource or the transmission resource for the data copy transmission.

transmitting RLC control PDU;

Starting or restarting a timer for the modified transmission resource; that is, after modifying the transmission resource, the terminal device controls itself to adjust the start of the timer for the transmission resource, for example, the timer of the logical channel corresponding to the modified transmission resource may be restarted, or the timer of the RLC entity corresponding to the modified transmission resource may be restarted, or a new timer may be set for the modified logical channel, and the terminal device starts the new timer corresponding to the logical channel when the logical channel is enabled. Optionally, parameters or state variables of the transmission resources (e.g. RLC entities) before and/or after the modification are reset.

When the unacknowledged RLC SDU or partial RLC SDU is received, the RLC SDU or partial RLC SDU is retransmitted. In contrast to the previous one, this piece focuses on how to determine that the transmission was unsuccessful and to determine what to retransmit. For example, when the terminal device sends an RLC SDU and receives NACK unsuccessfully, all RLC SDUs may be retransmitted; or, when the terminal device receives NACK only for a part of RLC SDUs, all RLC SDUs may also be retransmitted; alternatively, the terminal device may retransmit the partial RLC SDU when it receives NACK for the partial RLC SDU.

Finally, it should be noted that the foregoing

scenarios

Therefore, by adopting the above scheme, in a scenario where DC and CA are combined, or when the terminal device performs data replication transmission of more than 2 transmission resources, if the terminal device determines that a problem occurs in a wireless link, it can determine how to handle the transmission resource having the problem. Therefore, protocol specification can be completed, and a control mode of data copying and transmission is increased, so that the control of the data copying and transmission is more flexible.

Fig. 12 is a schematic structural diagram of a communication device 1200 provided in an embodiment of the present application, where the communication device in this embodiment may be embodied as a terminal device or a network device in the foregoing embodiment. The communication device 1200 shown in fig. 12 includes a processor 1210, and the processor 1210 can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, the communication device 1200 may further include a memory 1220. From the memory 1220, the processor 1210 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, as shown in fig. 12, the communication device 1200 may further include a transceiver 1230, and the processor 1210 may control the transceiver 1230 to communicate with other devices, and in particular, may transmit information or data to other devices or receive information or data transmitted by other devices.

The transceiver 1230 may include a transmitter and a receiver, among others. The transceiver 1230 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1200 may specifically be a terminal in the embodiment of the present application, and the communication device 1200 may implement a corresponding process implemented by a mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Fig. 13 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1300 shown in fig. 13 includes a processor 1310, and the processor 1310 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 13, the chip 1300 may further include a memory 1320. From the memory 1320, the processor 1310 may call and execute a computer program to implement the method of the present embodiment.

The memory 1320 may be a separate device from the processor 1310, or may be integrated into the processor 1310.

Optionally, the chip 1300 may further include an input interface 1330. The processor 1310 may control the input interface 1330 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 1300 may further include an output interface 1340. The processor 1310 may control the output interface 1340 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the terminal device or the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off the shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting, for example, the memories in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 14 is a schematic block diagram of a communication system 1400 provided in an embodiment of the present application. As shown in fig. 14, the communication system 1400 includes a terminal device 1410 and a network device 1420.

The terminal device 1410 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1420 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, no further description is provided here.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A radio link failure processing method applied to a terminal device, the terminal device performing data copy transmission combining carrier aggregation, CA, and dual connectivity, DC, or the terminal device performing data copy transmission including at least two transmission resources, the method comprising:

judging whether to perform copy transmission, if the copy transmission is determined, modifying the activated transmission resource, modifying the transmission resource for the copy transmission, modifying the activated transmission resource or a service cell/cell list allowed to be used corresponding to the transmission resource for the copy transmission, reporting a modified copy transmission state, reporting the modified transmission resource, reporting the resource for the copy transmission, and reporting the modified activated transmission resource or the service cell/cell list allowed to be used corresponding to the transmission resource for the copy transmission;

2. The method of claim 1, wherein the method further comprises:

the method comprises the steps of obtaining at least one service cell/cell list which is allowed to be used and corresponds to each transmission resource in at least two transmission resources configured for the terminal equipment by the network equipment.

3. The method of claim 1, wherein the method further comprises:

the terminal equipment executes data copy transmission, or the terminal equipment is in a data copy transmission state;

the terminal device performs data copy transmission, or the terminal device is in a data copy transmission state, and the method includes at least one of the following:

CA and DC combined data copy transmission, or data copy transmission of at least two transmission resources is configured;

activating CA and DC combined data copy transmission or data copy transmission of at least two transmission resources;

the CA and DC combined data copy transmission or the data copy transmission of at least two transmission resources is in an active state;

acquiring a data replication transmission indication of the network equipment, or a data replication transmission indication combined by CA and DC, or a data replication transmission indication of at least two transmission resources.

4. The method of claim 3, wherein,

the data replication transmission of the at least two transmission resources is configured, comprising: at least two logical channels, or paths, or carriers, or RLC entities, or allowed serving cells/cell lists are configured for data replication transmission;

5. The method of any of claims 1-4, wherein the method further comprises:

when the activated transmission resource or the transmission resource for transmitting the duplicated data only comprises the secondary cell (SCell) configured/corresponding to the activated transmission resource or the transmission resource for transmitting the duplicated data, judging whether the terminal equipment is in a first state or not based on a first preset condition;

wherein the first preset condition comprises at least one of:

detecting transmission resources with problems or transmission resources with maximum retransmission times of RLC, wherein the configured service cell allowed to be used only comprises SCells;

the activated transmission resource or the transmission resource for transmitting the duplicated data is configured with at least one set of service cell/cell list allowed to be used;

the transmission resource with problems or the transmission resource of the RLC reaching the maximum retransmission times is configured with at least one set of service cell/cell list allowed to be used;

the logical channel with problems or the logical channel with the maximum number of times of RLC retransmission is configured with at least one set of allowed serving cell/cell list.

6. The method of claim 5, wherein the method further comprises:

and forwarding the data which is not transmitted or failed to be transmitted in the original activated transmission resources with the radio link failure or the transmission resources originally used for transmitting the duplicated data to the modified activated transmission resources or the modified transmission resources used for data duplicated transmission for transmission.

7. The method of claim 6, wherein the method further comprises at least one of:

sending an indication of a transmission resource update;

transmitting an RLC control PDU;

sending an RLC status report;

triggering a status report;

triggering a status report at the modified transmission resource;

for the modified transmission resource, the first transmission opportunity sends a status PDU to the lower layer;

starting or restarting a timer for the modified transmission resources;

after receiving the status report, updating the status variable;

stopping or restarting the timer after receiving the status report;

when receiving an acknowledgement of an RLC SDU or partial RLC SDU, indicating successful transmission to a higher layer;

when the unacknowledged RLC SDU or partial RLC SDU is received, the RLC SDU or partial RLC SDU is retransmitted.

8. The method of claim 6 or 7, wherein the method further comprises:

sending a service cell/cell list which is allowed to be used and corresponds to the transmission resource for modifying the activated transmission resource or the transmission resource for copying transmission to the network equipment;

and/or the presence of a gas in the gas,

transmitting the modified activated transmission resources or the transmission resources for data replication transmission to the network device.

9. A radio link failure processing method is applied to network equipment and comprises the following steps:

if the terminal equipment is in the first state, at least one of the following operations is executed:

receiving the modified copy transmission state reported by the terminal equipment, receiving the modified transmission resource, receiving the resource for copy transmission, and receiving the modified activated transmission resource or the service cell/cell list allowed to be used corresponding to the transmission resource for copy transmission;

wherein the first state is indicative of at least one of: the wireless link of the activated transmission resource or the transmission resource for transmitting the duplicated data has a problem, the wireless link fails, the transmission quality has a problem, and the transmission quality is less than or equal to the threshold;

configuring data copy transmission combining Carrier Aggregation (CA) and Dual Connectivity (DC) for the terminal equipment, or configuring data copy transmission comprising at least two transmission resources for the terminal equipment.

10. The method of claim 9, wherein,

each transmission resource is configured with at least one allowed serving cell/cell list.

11. The method of claim 10, wherein the method further comprises:

and configuring at least one service cell/cell list which is allowed to be used for each transmission resource in at least two transmission resources of the duplicated data transmission configured for the terminal equipment.

12. The method of claim 11, wherein the method further comprises at least one of:

13. The method of claim 12, wherein,

14. The method according to any one of claims 9-13, wherein the method further comprises:

receiving a service cell/cell list which is allowed to be used and corresponds to the modified activated transmission resource or the transmission resource used for the duplicate transmission and is sent by the terminal equipment;

and/or the presence of a gas in the gas,

the receiving terminal device transmits the modified activated transmission resource or the transmission resource for the data duplicate transmission.

15. A terminal device that performs data copy transmission of a combination of carrier aggregation, CA, and dual connectivity, DC, or that performs data copy transmission including at least two transmission resources, the terminal device comprising:

16. The terminal device of claim 15, wherein the terminal device further comprises:

the first communication unit acquires at least one service cell/cell list which is allowed to be used and corresponds to each transmission resource in at least two transmission resources configured for the terminal equipment by the network equipment.

17. The terminal device according to claim 15, wherein the first processing unit performs data copy transmission or is in a data copy transmission state;

wherein the manner of executing data copy transmission or being in a data copy transmission state includes at least one of the following:

and acquiring a data copy transmission indication of the network equipment, or a data copy transmission indication combined by the CA and the DC, or a data copy transmission indication of at least two transmission resources.

18. The terminal device of claim 17,

the data replication transmission of the at least two transmission resources is configured, comprising: at least two logical channels, or paths, or carriers, or RLC entities, or data replication transmissions of allowed serving cells/cell lists are configured;

19. The terminal device of any of claims 15-18, wherein the first processing unit,

when the activated transmission resource or the transmission resource for transmitting the duplicated data only includes the secondary cell (SCell) configured/corresponding, judging whether the terminal device is in a first state based on a first preset condition;

wherein the first preset condition comprises at least one of:

the transmission resource with problems or the transmission resource with the maximum retransmission times of the RLC is obtained, and the configured service cell which is allowed to be used only comprises the SCell;

20. The terminal device according to claim 15 or 16, wherein the first processing unit forwards, to the modified activated transmission resource or the modified transmission resource for data duplicate transmission, data that is not transmitted or failed to be transmitted in the original activated transmission resource or the original transmission resource for transmitting duplicate data in which a radio link failure occurs;

a first communication unit for data transmission via the modified activated transmission resource or the modified transmission resource for data copy transmission.

21. The terminal device of claim 20, wherein the first communication unit performs at least one of:

sending an indication of a transmission resource update;

transmitting an RLC control PDU;

sending an RLC status report;

triggering a status report;

triggering a status report at the modified transmission resource;

starting or restarting a timer for the modified transmission resources;

after receiving the status report, updating the status variable;

stopping or restarting the timer after receiving the status report;

when an acknowledgement of an RLC SDU or partial RLC SDU is received, indicating successful transmission to a higher layer;

22. The terminal device of claim 16, wherein the first communication unit,

and/or the presence of a gas in the gas,

the modified activated transmission resources or the transmission resources for data replication transmission are sent to the network device.

23. A network device, comprising:

and the second communication unit executes at least one of the following operations if the terminal equipment is in the first state:

receiving the modified copy transmission state reported by the terminal equipment, receiving the modified transmission resource, receiving the resource for copy transmission, and receiving the modified activated transmission resource or the service cell/cell list allowed to be used corresponding to the transmission resource for copy transmission; wherein the first state is indicative of at least one of: the wireless link of the activated transmission resource or the transmission resource for transmitting the duplicated data has a problem, the wireless link fails, the transmission quality has a problem, and the transmission quality is less than or equal to the threshold;

the second communication unit is further configured to configure data replication transmission combining carrier aggregation CA and dual connectivity DC for the terminal device, or configure data replication transmission including at least two transmission resources for the terminal device.

24. The network device of claim 23,

25. The network device according to claim 24, wherein the second communication unit configures at least one serving cell/cell list for each of at least two transmission resources of the terminal device configured for duplicated data transmission.

26. The network device of claim 25, wherein the second communication unit performs at least one of:

configuring CA and DC combined data copy transmission for the terminal equipment or configuring data copy transmission of at least two transmission resources for the terminal equipment;

27. The network device of claim 26,

the second communication unit performs at least one of:

a configuration to send a data duplicate transmission of one of at least two logical channels, leg, carrier, RLC entity, serving cell/cell list allowed to be used;

instructing the terminal device to activate data replication transmission of one of at least two logical channels, leg, carrier, RLC entity, allowed serving cell/cell list.

28. The network device according to any of claims 23-27, wherein the second communication unit is configured to send, by the receiving terminal device, a modified activated transmission resource or a serving cell/cell list allowed to be used corresponding to a transmission resource used for duplicate transmission;

and/or the presence of a gas in the gas,

29. A terminal device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program and the processor is adapted to call and run the computer program stored in the memory to perform the steps of the method according to any of claims 1-8.

30. A network device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program and the processor is adapted to call and run the computer program stored in the memory to perform the steps of the method according to any of claims 9-14.

31. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1-8.

32. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 9-14.

33. A computer-readable storage medium for storing a computer program for causing a computer to perform the steps of the method according to any one of claims 1 to 14.