CN111480389B - Information transmission method and device and computer storage medium - Google Patents
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Abstract
The embodiment of the invention provides a method and a device for information transmission and a computer storage medium; the method comprises the following steps: detecting an event occurring in an RLC entity based on a preset detection strategy; and in response to the detection of a preset RLF event, sending report information generated based on the RLF event of the secondary cell through a Radio Resource Control (RRC) signaling. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
Description
Technical Field
The embodiment of the invention relates to the technical field of wireless communication, in particular to an information transmission method, an information transmission device and a computer storage medium.
Background
In the fifth Generation mobile communication technology (5G, 5th Generation), the Radio access technology of 5G is called New Radio, NR for short. In the 5G NR, in order to improve the reliability of data transmission and reduce the delay of data transmission, a data duplication (data duplication) transmission mechanism is introduced.
Currently, in 5G NR, a data replication transmission mechanism under Carrier Aggregation (CA) is defined. The technical scheme of the Data replication transmission mechanism utilizes the Data replication function of a Packet Data Convergence Protocol (PDCP) layer.
In the above technical solution of the data duplication transmission mechanism, each RLC entity corresponds to one logical channel, and each logical channel may be configured to correspond to one or a group of cells, so that the cells or the group of cells configured for the two logical channels are different. For an RLC entity (hereinafter referred to as AM RLC) operating in Acknowledged Mode (AM), if a packet is transmitted up to a maximum retransmission number, an RLC Failure may be caused, thereby triggering a Radio Link Failure (RLF) procedure. Generally, the RLF procedure causes re-establishment of Radio Resource Control (RRC), and the re-establishment of RRC may cause service interruption with a high probability, so it is necessary to avoid the service interruption caused by the RLF procedure.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a computer storage medium for information transmission; the service interruption phenomenon caused by the RLF process can be avoided.
The technical scheme of the embodiment of the invention can be realized as follows:
in a first aspect, an embodiment of the present invention provides an information transmission method, where the method includes:
detecting an event occurring in an RLC entity based on a preset detection strategy;
and in response to the detection of a preset RLF event, sending report information generated based on the RLF event of the secondary cell through a Radio Resource Control (RRC) signaling.
In a second aspect, an embodiment of the present invention provides an information transmission method, where the method includes:
receiving the report information loaded in the RRC signaling; the reporting information is generated based on the detected RLF event of the secondary cell;
and determining whether to reconfigure the network based on the reported information.
In a third aspect, an embodiment of the present invention provides an information transmission apparatus, including: a detection section, a first transmission section; wherein,
the detection part is configured to detect an event occurring in the RLC entity based on a preset detection strategy;
the first sending part is configured to send, in response to the detection part detecting a preset RLF event, reporting information generated based on the RLF event of the secondary cell through Radio Resource Control (RRC) signaling.
In a fourth aspect, an embodiment of the present invention provides an information transmission apparatus, including: a receiving section and a determining section; wherein,
the receiving part is configured to receive the reporting information carried in the RRC signaling; the reporting information is generated based on the detected RLF event of the secondary cell;
the determining part is configured to determine whether to reconfigure the mobile terminal based on the reporting information.
In a fifth aspect, an embodiment of the present invention provides a user equipment UE, including: a first network interface, a first memory and a first processor; wherein,
the first network interface is used for receiving and sending signals in the process of receiving and sending information with other external network elements;
the first memory for storing a computer program operable on the first processor;
the first processor is configured to, when running the computer program, perform the steps of the information transmission method of the first aspect.
In a sixth aspect, an embodiment of the present invention provides a network device, including: a second network interface, a second memory, and a second processor;
the second network interface is used for receiving and sending signals in the process of receiving and sending information with other external network elements;
the second memory for storing a computer program operable on a second processor;
the second processor is configured to, when the computer program is executed, execute the steps of the information transmission method according to the second aspect.
In a seventh aspect, an embodiment of the present invention provides a computer storage medium, where an information transmission program is stored, and the information transmission program, when executed by at least one processor, implements the steps of the information transmission method according to the first aspect or the second aspect.
The embodiment of the invention provides a method and a device for information transmission and a computer storage medium; and after detecting the RLF event of the auxiliary cell, the UE sends the report information to the network side by adopting the RRC signaling, so that the network side can determine whether to reconfigure according to the report information. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
Drawings
Fig. 1 is a schematic diagram of a protocol structure in the related art;
fig. 2 is a schematic flow chart of a method for transmitting information according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of another information transmission method according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an information transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a specific hardware structure of a ue according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating another information transmission apparatus according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a composition of another information transmission apparatus according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a specific hardware structure of a network device according to an embodiment of the present invention.
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.
For the Data duplication transmission mechanism under CA defined in 5G NR, the related protocol structure is as shown in fig. 1, after the PDCP layer generates PDCP PDUs based on PDCP Service Data Units (SDUs) received by the protocol higher layer, the PDCP PDUs are duplicated, and the source PDCP PDU and the duplicated PDCP PDUs are respectively transmitted to two RLC entities, such as RLC Entity a and RLC Entity b in fig. 1; then, the single MAC entity maps the PDCP PDUs transmitted by different RLC entities to different Physical layer carriers for transmission, such as Physical Carrier 1 and Physical Carrier 2. Thereby improving the reliability of data transmission using the frequency diversity gain of the carrier.
Based on the protocol structure shown in fig. 1 and the data duplication transmission mechanism in CA, it can be known that each RLC entity corresponds to one logical channel, and each logical channel can be configured to correspond to one or a group of cells, so that the cells or the group of cells configured for the two logical channels are different. However, in the current discussion of the third Generation Partnership Project (3 GPP), for the RLC entity of the UE, if all cells or cell groups configured by a logical channel corresponding to the RLC entity are secondary cells, when a certain RLC SDU of the AM RLC retransmits up to the maximum retransmission number, that is, an RLC failure occurs, the RRC re-establishment may not be triggered, but only reporting to the network side is needed, and the network side determines how to reconfigure parameters, so as to reduce the occurrence of the phenomenon of service interruption of the UE caused by the RRC re-establishment. However, in the related 3GPP discussion, there is no technical scheme for reporting to the network side in the related art.
The problem of how to report to the network side when the RLC fault state occurs is solved. The present application proposes the following embodiments based on the above.
Example one
Referring to fig. 2, it shows a method for information transmission provided in an embodiment of the present invention, which may be applied to a user equipment UE side, and the method includes:
s201: detecting an event occurring in an RLC entity based on a preset detection strategy;
s202: and in response to the detection of a preset RLF event, sending report information generated based on the RLF event of the secondary cell through a Radio Resource Control (RRC) signaling.
It should be noted that the reported information may be used by the network side to determine whether to perform reconfiguration.
Through the technical scheme shown in fig. 2, it can be seen that in the technical scheme shown in fig. 2, after detecting the RLF event of the secondary cell, the UE sends the reporting information to the network side by using the RRC signaling, so that the network side can determine whether to perform reconfiguration according to the reporting information. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
For the technical solution shown in fig. 2, in a possible implementation manner, the detecting an event occurring in an RLC entity based on a preset detection policy includes:
determining a target RLC entity among two RLC entities for PDCP duplicate transmission; all cells or cell groups configured by the logical channel corresponding to the target RLC entity are secondary cells;
and detecting the retransmission times of each RLC SDU or RLC PDU of the target RLC entity.
For the above implementation, it should be noted that, in the process of performing data copy transmission under CA, the UE may detect an event occurring in the RLC entity, for example, detect communication quality of a cell or a cell group configured by a logical channel corresponding to the RLC entity, or detect a data transmission amount of the logical channel corresponding to the RLC entity; for the AM RLC entity, the number of retransmissions of a certain RLC SDU or RLC PDU of the AM RLC entity may also be detected. In summary, the UE may detect all possible events on the RLC entity, but in this embodiment, for the secondary cell radio link failure RLF event, the UE is more interested in the retransmission times of each RLC SDU or RLC PDU of the target RLC entity, and therefore, the UE may specifically detect the retransmission times of each RLC SDU or RLC PDU of the target RLC entity. Based on the foregoing implementation manner, correspondingly, when the retransmission number reaches a preset retransmission number threshold, the UE can determine that the RLF event of the secondary cell radio link failure is detected, where the threshold may be considered as the maximum number of times that can be tolerated for retransmission of the RLC SDU or RLC PDU. Therefore, the detecting of the preset Radio Link Failure (RLF) event of the secondary cell includes:
and when the retransmission times of any RLC SDU or RLC PDU of the target RLC entity reach the preset maximum retransmission times, determining that the auxiliary cell RLF event is detected.
It can be understood that, after detecting the RLF event of the secondary cell, to avoid the occurrence of service interruption caused by directly initiating an RRC reestablishment procedure by the UE, reporting to the network side is usually adopted, and the network side determines whether to perform RRC reconfiguration according to the reporting.
Based on the above comprehensiveness, for the technical solution shown in fig. 2, in a possible implementation manner, the sending, by using a radio resource control RRC signaling, reporting information generated based on a preset RLF event of a secondary cell in response to detecting the RLF event of the secondary cell includes:
and when the secondary cell RLF event is detected, triggering to send first reporting information through RRC signaling, wherein the first reporting information is generated based on the detected secondary cell RLF event.
For the above implementation, it should be noted that the secondary cell RLF event may be used as a trigger condition for sending the first reporting information, and after the first reporting information is sent, whether to perform RRC reconfiguration for the secondary cell RLF event is determined by the network side. Based on this, the present embodiment may preset a timer to enable the UE to timely know whether the network side decides to perform RRC reconfiguration. Therefore, for the above implementation, the triggering to send the first reporting information through the RRC signaling includes:
and if the preset timer is in a non-timing state, triggering to send the first reporting information through RRC signaling, and starting the timer.
In the timer process, there may be a plurality of situations occurring at the UE side, and therefore, for the situations that may additionally occur in the timer process, the following preferred scheme is adopted in the present embodiment to perform processing.
Preferably, in the timer process, sending the first reporting information through RRC signaling is not triggered, and the secondary cell RLF event detected again is set to a waiting state.
In view of the above preferred embodiments, the method may further include:
and when the timer is overtime, if the auxiliary cell RLF event in a waiting state exists, sending second reporting information through a Radio Resource Control (RRC) signaling, wherein the second reporting information is generated based on the auxiliary cell RLF event in an undetermined state.
It can be understood that, during the timer counting process, the RLF event of the secondary cell may be further detected continuously, but at this time, the network side does not perform an indication of RRC reconfiguration, and therefore, in order to reduce the processing load of the network side, all the RLF events of the secondary cell detected during the timer counting process may be reported to the network side after the timer expires.
Preferably, in the timer counting process, if the RRC reconfiguration signaling is received, the timer is stopped.
It can be understood that, in the timer counting process, if an RRC reconfiguration signaling fed back by the network side based on the first reporting information is received, the RRC reconfiguration process is performed on the logical channel corresponding to the target RLC entity, so that the timer stops counting, and the timer is turned into an untimed state, so that after the RRC reconfiguration process is completed, the event occurring in the RLC entity is detected again according to S201.
It should be noted that the RRC reconfiguration signaling stops the timer timing, considering that the RRC reconfiguration has already processed the RLF event of the secondary cell. Based on this, after the timer stops counting, the above preferred example may further include: and canceling all the set RLF events of the auxiliary cells in the waiting state in the timing process of the timer before stopping timing, so that second report information generated aiming at the RLF events of the auxiliary cells in the waiting state does not need to be reported to the network side, and the network side does not need to correspondingly determine whether to perform RRC reconfiguration according to the second report information.
In addition, the received RRC reconfiguration signaling may specifically be reconfiguration signaling containing specific content. The specific content refers to the reconfiguration signaling that includes processing on the secondary cell RLF, for example, the related signaling that includes the reconfiguration RLC entity. The timer is stopped only by the reconfiguration signaling containing the specific content, otherwise, the timer is not influenced.
The foregoing two possible implementation manners describe the specific implementation process of the scheme shown in fig. 2 in detail, but since the network side determines whether to perform reconfiguration based on the reporting information, the reporting information carried in the RRC signaling needs to enable the network to measure and acquire the description information related to the RLF event of the secondary cell. Therefore, based on the above, in a possible implementation manner, the reporting information includes description information of the RLF event of the secondary cell.
For this implementation, specifically, the reporting information includes: the target RLC entity has identification information of incidence relation and/or cell quality information corresponding to the target RLC entity.
For the identification information that the target RLC entity has an association relationship, the method may specifically include: at least one of a logical channel identifier, a cell group identifier, a bearer identifier, and a cell identifier corresponding to the target RLC entity.
The cell quality information corresponding to the target RLC entity specifically includes at least one of the following items:
the quality information of the current service cell and the quality information of the non-service cell with the best quality on the frequency of the cell corresponding to the target RLC entity;
the quality information of the current service cell and the non-service cell with the best quality on the frequency of other service cells except the cell corresponding to the target RLC entity;
the best quality cell on other frequencies than the frequencies to which all serving cells belong.
It should be noted that, in the foregoing implementation manner, the cell corresponding to the target RLC entity includes: and the target RLC entity corresponds to an activated cell, or the target RLC entity corresponds to an activated cell and an inactivated cell.
It can be understood that, the implementation manner of the aforementioned reporting information can describe the RLF event of the secondary cell from multiple aspects, so that the network side can accurately determine whether to perform reconfiguration according to the reporting information.
This embodiment provides a method for transmitting information, in which after detecting an RLF event in a secondary cell, a UE sends reporting information to a network side by using an RRC signaling, so that the network side can determine whether to perform reconfiguration according to the reporting information. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
Example two
Based on the same inventive concept of the foregoing embodiment, referring to fig. 3, it illustrates an information transmission method provided in an embodiment of the present invention, which may be preferably applied to a network-side device, and the method includes:
s301: receiving the report information loaded in the RRC signaling; the reporting information is generated based on the detected RLF event of the secondary cell;
s302: and determining whether to reconfigure the network based on the reported information.
For the technical solution shown in fig. 3, in a possible implementation manner, the method further includes: transmitting RRC reconfiguration signaling in response to determining to reconfigure.
Specifically, with reference to the content that may be included in the report information in the foregoing embodiment, the network side device may make a decision for reconfiguration based on the content that may be included in the report information, so as to determine whether to perform reconfiguration.
In this embodiment, after receiving report information generated based on an RLF event in a secondary cell, a network side determines whether to perform reconfiguration based on the report information. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
EXAMPLE III
Based on the same inventive concept of the foregoing embodiments, referring to fig. 4, it illustrates an information transmission apparatus 40 provided by the embodiments of the present invention, where the apparatus 40 may preferably be applied in a UE, and the apparatus 40 may include: a detection section 401, a first transmission section 402; wherein,
the detecting part 401 is configured to detect an event occurring in the RLC entity based on a preset detection policy;
the first sending part 402 is configured to send, in response to the detection part 401 detecting a preset RLF event, reporting information generated based on the RLF event of the secondary cell through radio resource control RRC signaling.
In the above scheme, the detecting section 401 is configured to:
determining a target RLC entity among two RLC entities for PDCP duplicate transmission; all cells or cell groups configured by the logical channel corresponding to the target RLC entity are secondary cells;
and detecting the retransmission times of each RLC SDU or RLC PDU of the target RLC entity.
In the above scheme, the detecting part 401 is configured to determine that the RLF event of the secondary cell is detected when the number of retransmissions of any RLC SDU or RLC PDU of the target RLC entity reaches a preset maximum number of retransmissions.
In the above scheme, the first sending part 402 is configured to: when the detecting part 401 detects the secondary cell RLF event, it triggers sending first reporting information through RRC signaling, where the first reporting information is generated based on the detected secondary cell RLF event.
In the above scheme, the first sending part 402 is configured to: and if the preset timer is in a non-timing state, triggering to send the first reporting information through RRC signaling, and starting the timer.
In the above scheme, the first sending part 402 is further configured to: in the timing process of the timer, the first reporting information is not triggered to be sent through RRC signaling;
the detecting part 401 is further configured to set the secondary cell RLF event detected again to a waiting state.
In the above scheme, the first sending part 402 is further configured to:
and when the timer is overtime, if the auxiliary cell RLF event in a waiting state exists, sending second reporting information through a Radio Resource Control (RRC) signaling, wherein the second reporting information is generated based on the auxiliary cell RLF event in an undetermined state.
In the above scheme, the first sending part 402 is further configured to: and in the timing process of the timer, if an RRC reconfiguration signaling is received, stopping the timer.
In the above scheme, the reporting information includes description information of the RLF event in the secondary cell.
In the above scheme, the reporting information includes: the target RLC entity has identification information of incidence relation and/or cell quality information corresponding to the target RLC entity.
In the foregoing solution, the identification information that the target RLC entity has an association relationship includes:
at least one of a logical channel identifier, a cell group identifier, a bearer identifier, and a cell identifier corresponding to the target RLC entity.
In the above scheme, the cell quality information corresponding to the target RLC entity includes at least one of the following:
the quality information of the current service cell and the quality information of the non-service cell with the best quality on the frequency of the cell corresponding to the target RLC entity;
the quality information of the current service cell and the non-service cell with the best quality on the frequency of other service cells except the cell corresponding to the target RLC entity;
the best quality cell on other frequencies than the frequencies to which all serving cells belong.
It is understood that in this embodiment, "part" may be part of a circuit, part of a processor, part of a program or software, etc., and may also be a unit, and may also be a module or a non-modular.
In addition, each component in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.
Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Accordingly, the present embodiment provides a computer storage medium storing an information transmission program, which when executed by at least one processor implements the steps of the information transmission method of the first embodiment.
Based on the information transmission apparatus 40 and the computer storage medium, referring to fig. 5, a specific hardware structure of a user equipment UE 50 according to an embodiment of the present invention is shown, which includes: a first network interface 501, a first memory 502, and a first processor 503; the various components are coupled together by a bus system 504. It is understood that the bus system 504 is used to enable communications among the components. The bus system 504 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 504 in fig. 5. The first network interface 501 is configured to receive and transmit signals in a process of receiving and transmitting information with other external network elements;
a first memory 502 for storing a computer program capable of running on the first processor 503;
a first processor 503, configured to execute, when running the computer program:
detecting an event occurring in an RLC entity based on a preset detection strategy;
and in response to the detection of a preset RLF event, sending report information generated based on the RLF event of the secondary cell through a Radio Resource Control (RRC) signaling.
It is to be appreciated that the first memory 502 in embodiments of the present invention 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 illustration and 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 Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The first memory 502 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
And the first processor 503 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 503. The first Processor 503 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 device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention 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 invention 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 the first memory 502, and the first processor 503 reads the information in the first memory 502, and completes the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Specifically, when the first processor 503 in the user equipment 50 is further configured to run the computer program, the steps of the information transmission method described in the foregoing first embodiment are executed, which is not described herein again.
Example four
Based on the same inventive concept of the foregoing embodiment, referring to fig. 6, it illustrates an information transmission apparatus 60 provided by an embodiment of the present invention, where the apparatus 60 may be preferably applied to a network-side device, and the apparatus 60 may include: a receiving section 601 and a determining section 602; wherein,
the receiving part 601 is configured to receive the reporting information carried in the RRC signaling; the reporting information is generated based on the detected RLF event of the secondary cell;
the determining part 602 is configured to determine whether to perform reconfiguration based on the reporting information.
In the above solution, referring to fig. 7, the apparatus 60 further includes: a second transmitting section 603 configured to transmit RRC reconfiguration signaling in response to the determination by the determining section.
Specifically, with reference to the content that may be included in the report information described in the foregoing embodiment, the determining part 602 may make a decision for reconfiguration based on the content that may be included in the report information, so as to determine whether to perform reconfiguration.
In addition, the present embodiment provides a computer storage medium storing an information transmission program, which when executed by at least one processor implements the steps of the information transmission method described in the second embodiment. For specific description of the computer storage medium, refer to the description in the foregoing embodiments, and are not repeated here.
Based on the information transmission apparatus 60 and the computer storage medium, referring to fig. 8, a specific hardware composition of a network device 80 provided by the embodiment of the present invention is shown, which includes: a second network interface 801, a second memory 802, and a second processor 803; the various components are coupled together by a bus system 804. It is understood that the bus system 804 is used to enable communications among the components. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 804 in FIG. 8. Wherein,
the second network interface 801 is configured to receive and transmit signals in a process of receiving and transmitting information with other external network elements;
a second memory 802 for storing a computer program capable of running on the second processor 803;
a second processor 803, configured to, when running the computer program, perform:
receiving the report information loaded in the RRC signaling; the reporting information is generated based on the detected RLF event of the secondary cell;
and determining whether to reconfigure the network based on the reported information.
It can be understood that, in this embodiment, components in the specific hardware structure of the network device 80 are similar to corresponding components in the foregoing technical solution, and are not described herein again.
Specifically, the second processor 803 in the network device 80 is further configured to execute the steps of the information transmission method described in the second embodiment when running the computer program, which is not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Industrial applicability
In the embodiment of the invention, after the UE detects the RLF event of the auxiliary cell, the UE sends the report information to the network side by adopting the RRC signaling, so that the network side can determine whether to reconfigure according to the report information. The method avoids the phenomenon that the UE directly triggers the RRC reestablishment process due to the RLF event, and reduces the service interruption caused by the RRC reestablishment process.
Claims (18)
1. A method of information transmission, the method comprising:
detecting an event occurring in an RLC entity based on a preset detection strategy;
responding to the detected preset RLF event of the radio link failure of the secondary cell, and sending report information generated based on the RLF event of the secondary cell through a Radio Resource Control (RRC) signaling, wherein the report information comprises the following steps:
when the RLF event of the secondary cell is detected, if a preset timer is in a non-timing state, triggering to send first reporting information through an RRC (radio resource control) signaling, and starting the timer; the first reporting information is generated based on the detected RLF event of the secondary cell;
in the timing process of the timer, the first reporting information is not triggered to be sent through RRC signaling, and the secondary cell RLF event detected again is set to be in a waiting state; and if the RRC reconfiguration signaling is received, stopping the timer, and canceling all the RLF events of the secondary cells set to be in the waiting state.
2. The method of claim 1, wherein the detecting an event occurring in an RLC entity based on a preset detection policy comprises:
determining a target RLC entity among two RLC entities for PDCP duplicate transmission; all cells or cell groups configured by the logical channel corresponding to the target RLC entity are secondary cells;
and detecting the retransmission times of each RLC SDU or RLC PDU of the target RLC entity.
3. The method of claim 2, wherein the detecting of the predetermined secondary cell Radio Link Failure (RLF) event comprises:
and when the retransmission times of any RLC SDU or RLC PDU of the target RLC entity reach the preset maximum retransmission times, determining that the auxiliary cell RLF event is detected.
4. The method of claim 1, wherein the method further comprises:
and when the timer is overtime, if the auxiliary cell RLF event in the waiting state exists, sending second reporting information through a Radio Resource Control (RRC) signaling, wherein the second reporting information is generated at least based on the auxiliary cell RLF event in the waiting state.
5. The method of any one of claims 1 to 4, wherein the reported information comprises description information of the RLF event of the secondary cell.
6. The method of claim 2 or 3, wherein the reporting information comprises: the target RLC entity has identification information of incidence relation and/or cell quality information corresponding to the target RLC entity.
7. The method of claim 6, wherein the target RLC entity has identification information of an association comprising: at least one of a logical channel identifier, a cell group identifier, a bearer identifier, and a cell identifier corresponding to the target RLC entity.
8. The method of claim 6, wherein the cell quality information corresponding to the target RLC entity comprises at least one of:
the quality information of the current service cell and the quality information of the non-service cell with the best quality on the frequency of the cell corresponding to the target RLC entity;
the quality information of the current service cell and the non-service cell with the best quality on the frequency of other service cells except the cell corresponding to the target RLC entity;
the best quality cell on other frequencies than the frequencies to which all serving cells belong.
9. An information transmission apparatus comprising: a detection section, a first transmission section; wherein,
the detection part is configured to detect an event occurring in the RLC entity based on a preset detection strategy;
the first sending part is configured to send reporting information generated based on a Radio Resource Control (RRC) event of a secondary cell in response to the detection part detecting the RLF event of a preset RLF event of the secondary cell; wherein,
the first transmitting section is configured to: when the detection part detects the RLF event of the secondary cell, if a preset timer is in a non-timing state, triggering to send first reporting information through an RRC (radio resource control) signaling, and starting the timer; the first reporting information is generated based on the detected RLF event of the secondary cell;
the first transmitting section is further configured to: in the timing process of the timer, the first reporting information is not triggered to be sent through RRC signaling;
the detection part is further configured to set the secondary cell RLF event detected again to a waiting state;
the first transmitting section is further configured to: and in the timing process of the timer, if an RRC reconfiguration signaling is received, stopping the timer and canceling all RLF events of the secondary cells set to be in a waiting state.
10. The apparatus of claim 9, wherein the detection portion is configured to:
determining a target RLC entity among two RLC entities for PDCP duplicate transmission; all cells or cell groups configured by the logical channel corresponding to the target RLC entity are secondary cells;
and detecting the retransmission times of each RLC SDU or RLC PDU of the target RLC entity.
11. The apparatus according to claim 10, wherein the detecting section is configured to determine that the secondary cell RLF event is detected when the number of retransmissions of any RLC SDU or RLC PDU of the target RLC entity reaches a preset maximum number of retransmissions.
12. The apparatus of claim 9, wherein the first transmit portion is further configured to:
and when the timer is overtime, if the auxiliary cell RLF event in the waiting state exists, sending second reporting information through a Radio Resource Control (RRC) signaling, wherein the second reporting information is generated at least based on the auxiliary cell RLF event in the waiting state.
13. The apparatus of any of claims 9 to 12, wherein the reported information comprises description information of the secondary cell RLF event.
14. The apparatus of claim 10 or 11, wherein the reporting information comprises: the target RLC entity has identification information of incidence relation and/or cell quality information corresponding to the target RLC entity.
15. The apparatus of claim 14, wherein the target RLC entity has identification information of an association comprising: at least one of a logical channel identifier, a cell group identifier, a bearer identifier, and a cell identifier corresponding to the target RLC entity.
16. The apparatus of claim 14, wherein the cell quality information corresponding to the target RLC entity comprises at least one of:
the quality information of the current service cell and the quality information of the non-service cell with the best quality on the frequency of the cell corresponding to the target RLC entity;
the quality information of the current service cell and the non-service cell with the best quality on the frequency of other service cells except the cell corresponding to the target RLC entity;
the best quality cell on other frequencies than the frequencies to which all serving cells belong.
17. A user equipment, UE, comprising: a first network interface, a first memory and a first processor; wherein,
the first network interface is used for receiving and sending signals in the process of receiving and sending information with other external network elements;
the first memory for storing a computer program operable on the first processor;
the first processor, when executing the computer program, is configured to perform the steps of the information transmission method according to any one of claims 1 to 8.
18. A computer storage medium storing an information transfer program which, when executed by at least one processor, implements the steps of the information transfer method of any one of claims 1 to 8.
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| PCT/CN2018/080088 WO2019178818A1 (en) | 2018-03-22 | 2018-03-22 | Information transmission method and device, and computer storage medium |
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