CN110351038B - Indication and acquisition method for activating PDCP copy function, base station, terminal and medium - Google Patents

Indication and acquisition method for activating PDCP copy function, base station, terminal and medium Download PDF

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CN110351038B
CN110351038B CN201810292916.7A CN201810292916A CN110351038B CN 110351038 B CN110351038 B CN 110351038B CN 201810292916 A CN201810292916 A CN 201810292916A CN 110351038 B CN110351038 B CN 110351038B
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drb
mac entity
bitmap
copy function
pdcp
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CN110351038A (en
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顾祥新
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections

Abstract

An indication and acquisition method, a base station, a terminal and a medium for activating a PDCP copy function are provided, wherein the indication method for activating the PDCP copy function comprises the following steps: acquiring a DRB configured with a PDCP copy function; selecting a first MAC entity, which is a MAC entity controlling an activation/deactivation state of a PDCP copy function of the DRB; and sending a MAC CE through the first MAC entity to indicate to activate/deactivate the PDCP duplication function of the DRB. By applying the scheme, the UE can accurately acquire the indication signaling corresponding to the PDCP copy functions of different DRBs, so that the PDCP copy functions are normally activated/deactivated.

Description

Indication and acquisition method for activating PDCP copy function, base station, terminal and medium
Technical Field
The embodiment of the invention relates to the field of communication, in particular to an indication and acquisition method for activating a PDCP copy function, a base station, a terminal and a medium.
Background
In order to improve the reliability of Ultra-high Reliable Low Latency Communication (URLLC) service transmission and reduce transmission Latency, a Packet Data Convergence Protocol (PDCP) replication function is introduced for Carrier Aggregation (CA) and Dual Connectivity (DC) scenarios in a 5G system.
The principle of PDCP duplication (PDCP duplication) function is: in a PDCP layer of a transmitting end, a PDCP Protocol Data Unit (PDU) is copied into two identical parts and respectively sent to two different Radio Link Control (RLC) entities, and then respectively transmitted through different cells; the PDCP layer at the receiving end deletes one PDCP PDU and only retains one PDCP PDU for the same two PDCP PDUs which are successfully received. That is, the same data packet is duplicated into two identical packets and transmitted through two different channels, which can improve the reliability of data transmission.
In the existing scheme, a base station may configure a PDCP copy function for a Data Radio Bearer (DRB) through Radio Resource Control (RRC) signaling, and then activate or deactivate the PDCP copy function through a Media Access Control (MAC) Control Element (CE). For example, the MAC CE includes a bitmap (bitmap) of 1 byte, each bit in the bitmap corresponds to a DRB, and the PDCP copy function of the corresponding DRB can be activated/deactivated by setting the bit in the bitmap to a different value.
However, for a DC scenario in which one User Equipment (UE) is connected to two base stations, the UE may receive MAC CEs sent by two MAC entities at the same time, so that the UE cannot accurately acquire an indication signaling corresponding to activating/deactivating a PDCP copy function after receiving the indication signaling, and thus cannot normally activate/deactivate the PDCP copy function.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to explicitly instruct the UE to activate/deactivate the PDCP copy function.
To solve the above technical problem, an embodiment of the present invention provides an indication method for activating/deactivating a PDCP copy function, where the method includes: acquiring a DRB configured with a PDCP copy function; selecting a first MAC entity, which is a MAC entity controlling an activation/deactivation state of a PDCP copy function of the DRB; and sending a MAC CE through the first MAC entity to indicate to activate/deactivate the PDCP duplication function of the DRB.
Optionally, the DRB is a DRB configured with a DC PDCP copy function.
Optionally, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the DRB is located.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the DRB.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main cell group corresponding to the DRB.
Optionally, before acquiring a DRB configured with the PDCP copy function, the method further includes: indicating the first MAC entity through DRB configuration information in RRC signaling.
Optionally, the indicating, by DRB configuration information in RRC signaling, the first MAC entity includes: adding 1 bit in DRB configuration information in RRC signaling; indicating the first MAC entity by an increased 1 bit.
Optionally, before acquiring a DRB configured with the PDCP copy function, the method further includes: indicating the first MAC entity by a fourth bitmap.
Optionally, the indicating, by the fourth bitmap, the first MAC entity includes: carrying the fourth bitmap by any one of the following ways, indicating the first MAC entity: RRC signaling, MAC signaling, PHY signaling.
Optionally, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one, and the first UE is a UE corresponding to the MAC CE; the sending, by the first MAC entity, the MAC CE indicating activation/deactivation of the PDCP copy function of the DRB includes: indicating activation/deactivation of a PDCP copy function of the DRB through a bit in the first bitmap.
Optionally, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to first DRBs one to one, and the first DRBs include: all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity, the first UE being a UE corresponding to the MAC CE; the sending, by the first MAC entity, the MAC CE indicating activation/deactivation of the PDCP copy function of the DRB includes: and indicating to activate/deactivate the PDCP copy function of the DRB through a bit in the second bitmap.
Optionally, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs configured with a CAPDCP copy function and corresponding to the first MAC entity, wherein the first UE is a UE corresponding to the MAC CE; the sending, by the first MAC entity, the MAC CE indicating activation/deactivation of the PDCP copy function of the DRB includes: indicating activation/deactivation of a PDCP copy function of the DRB through a bit in the third bitmap.
The embodiment of the invention provides a method for acquiring an indication signaling for activating/deactivating a PDCP copy function, which comprises the following steps: receiving, by a first MAC entity, a MAC CE; acquiring an indication signaling for activating/deactivating a PDCP duplication function of a third DRB based on the received MAC CE, wherein the third DRB is as follows: and a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity.
Optionally, the third DRB is a DRB configured with a DC PDCP copy function.
Optionally, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the third DRB is located.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the third DRB.
Optionally, the first MAC entity is: and the MAC entity corresponding to the master cell group corresponding to the third DRB.
Optionally, before receiving the MAC CE through the first MAC entity, the method further includes: receiving RRC signaling; and acquiring the first MAC entity through DRB configuration information in the RRC signaling.
Optionally, before receiving the MAC CE through the first MAC entity, the method further includes: acquiring a fourth graph; and acquiring the first MAC entity through the fourth bitmap.
Optionally, the obtaining the bitmap includes: obtaining the fourth map by any one of the following methods: RRC signaling, MAC signaling, PHY signaling.
Optionally, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs configured with a PDCP copy function one to one; the acquiring the indication signaling for activating/deactivating the PDCP copying function of the third DRB based on the received MAC CE includes: acquiring an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB through the first bitmap.
Optionally, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to all DRBs of which the activation/deactivation states of the configured PDCP copy function are controlled by the first MAC entity one by one; the acquiring the indication signaling for activating/deactivating the PDCP copying function of the third DRB based on the received MAC CE includes: acquiring an indication signaling indicating activation/deactivation of the PDCP copy function of the third DRB through the second bitmap.
Optionally, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs configured with a DC PDCP copy function and DRBs configured with a CAPDCP copy function corresponding to the first MAC entity; the acquiring the indication signaling for activating/deactivating the PDCP copying function of the third DRB based on the received MAC CE includes: acquiring an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB through the third bitmap.
An embodiment of the present invention provides a base station, including: a first obtaining unit, adapted to obtain a DRB configured with a PDCP copy function; a selecting unit adapted to select a first MAC entity, the first MAC entity being a MAC entity that controls an activation/deactivation state of a PDCP copy function of the DRB; a first indication unit, adapted to send a MAC CE through the first MAC entity, indicating activation/deactivation of a PDCP copy function of the DRB.
Optionally, the DRB is a DRB configured with a DC PDCP copy function.
Optionally, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the DRB is located.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the DRB.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main cell group corresponding to the DRB.
Optionally, the base station further includes: a second indicating unit, adapted to indicate the first MAC entity through DRB configuration information in RRC signaling.
Optionally, the second indicating unit is adapted to add 1 bit to DRB configuration information in RRC signaling, and indicate the first MAC entity through the added 1 bit.
Optionally, the base station further includes: a third indication unit adapted to indicate the first MAC entity through a fourth bitmap.
Optionally, the third indicating unit is adapted to carry the fourth bitmap to indicate the first MAC entity by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
Optionally, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one, and the first UE is a UE corresponding to the MAC CE; the first indication unit is adapted to indicate activation/deactivation of a PDCP copy function of the DRB through a bit in the first bitmap.
Optionally, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to first DRBs one to one, and the first DRBs include: all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity, the first UE being a UE corresponding to the MAC CE; the first indication unit is adapted to indicate activation/deactivation of a PDCP copy function of the DRB through a bit in the second bitmap.
Optionally, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs configured with a CA PDCP copy function and corresponding to the first MAC entity, wherein the first UE is a UE corresponding to the MAC CE; the first indication unit is adapted to indicate activation/deactivation of a PDCP copy function of the DRB through a bit in the third bitmap.
An embodiment of the present invention provides a terminal, including: a first receiving unit adapted to receive the MAC CE through a first MAC entity; a second obtaining unit, adapted to obtain an indication signaling for activating/deactivating a PDCP copying function of a third DRB based on the received MAC CE, where the third DRB is: and a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity.
Optionally, the third DRB is a DRB configured with a DC PDCP copy function.
Optionally, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the third DRB is located.
Optionally, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the third DRB.
Optionally, the first MAC entity is: and the MAC entity corresponding to the master cell group corresponding to the third DRB.
Optionally, the terminal further includes: a second receiving unit adapted to receive RRC signaling; a third obtaining unit, adapted to obtain the first MAC entity through DRB configuration information in the RRC signaling.
Optionally, the terminal further includes: a fourth obtaining unit adapted to obtain a fourth bitmap; a fifth obtaining unit adapted to obtain the first MAC entity through the fourth bitmap.
Optionally, the fourth obtaining unit is adapted to obtain the fourth map by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
Optionally, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs configured with a PDCP copy function one to one; the second obtaining unit is adapted to obtain, through the first bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
Optionally, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to all DRBs of which the activation/deactivation states of the configured PDCP copy function are controlled by the first MAC entity one by one; the second obtaining unit is adapted to obtain, through the second bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
Optionally, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs configured with a DC PDCP copy function and DRBs configured with a CA PDCP copy function corresponding to the first MAC entity; the second obtaining unit is adapted to obtain, through the third bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon a computer instruction, where the computer instruction executes any one of the above methods for indicating activation/deactivation of a PDCP copy function or the above method for acquiring an indication signaling of activation/deactivation of the PDCP copy function when the computer instruction is executed.
An embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes, when executing the computer instructions, any of the above steps of the method for indicating activation/deactivation of a PDCP copy function.
The embodiment of the invention provides a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of being operated on the processor, and the processor executes any step of the method for acquiring the PDCP copy function indication signaling for activating/deactivating when the processor operates the computer instruction.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the embodiment of the invention indicates activation/deactivation of the PDCP copy function of the DRB by selecting the first MAC entity and sending the MAC CE through the first MAC entity, so that the UE can accurately acquire the indication signaling corresponding to the PDCP copy function of different DRBs after receiving the indication signaling for activating/deactivating the PDCP copy function sent by a plurality of MAC CEs, thereby normally activating/deactivating the PDCP copy function.
Drawings
Fig. 1 is a flowchart of an indication method for activating/deactivating a PDCP copy function according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a mapping relationship between a DRB and different protocol layers according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a mapping relationship between another DRB and different protocol layers according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a mapping relationship between another DRB and different protocol layers according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for acquiring an indication signaling for activating/deactivating a PDCP copy function according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the existing implementation, for a DC scenario in which one UE is connected to two base stations, the UE may receive MAC CEs sent by two MAC entities at the same time, and each MAC CE may instruct activation/deactivation of PDCP replication functions of all DRBs belonging to the UE, so that the UE cannot accurately know an instruction signaling corresponding to the activation/deactivation of the PDCP replication functions after receiving the instruction signaling, and thus cannot normally activate/deactivate the PDCP replication functions.
The embodiment of the invention indicates activation/deactivation of the PDCP copy function of the DRB by selecting the first MAC entity and sending the MAC CE through the first MAC entity, so that the UE can accurately acquire the indication signaling corresponding to the PDCP copy function of different DRBs after receiving the indication signaling for activating/deactivating the PDCP copy function sent by a plurality of MAC CEs, thereby normally activating/deactivating the PDCP copy function.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides an indication method for activating/deactivating a PDCP copy function, where the method may include the following steps:
step S101, acquiring a DRB configured with PDCP copy function.
In the specific implementation, the base station may configure the PDCP duplication function for the DRB through RRC signaling, and then activate or deactivate the PDCP duplication function of different DRBs through the MAC CE, so that one DRB configured with the PDCP duplication function needs to be acquired first.
Step S102, selecting a first MAC entity, where the first MAC entity is a MAC entity that controls an activation/deactivation state of a PDCP copy function of the DRB.
In a specific implementation, for a DC scenario, when one UE is connected to two base stations, the UE may receive MAC CEs sent by two MAC entities at the same time, and each MAC CE may indicate to activate/deactivate PDCP copy functions of all DRBs belonging to the UE, so to accurately indicate to activate/deactivate PDCP copy functions of different DRBs, a first MAC entity needs to be selected and determined first.
In a specific implementation, the first MAC entity may be a MAC entity that controls an activation/deactivation state of a PDCP copy function of the DRB.
In a specific implementation, the DRB may be a DRB configured with a DC PDCP replication function, and may also be a DRB configured with a CA PDCP replication function.
In a specific implementation, for a DRB configured with a DC PDCP replication function (that is, the DRB is configured with both a DC function and a PDCP function), one DRB corresponds to two MAC entities, and one MAC entity may be selected as the first MAC entity according to a certain criterion, for example, the MAC entity corresponding to the main RLC entity corresponding to the DRB is selected as the first MAC entity.
In an embodiment of the present invention, the DRB is a Split Bearer (Split Bearer), and the first MAC entity is a MAC entity corresponding to a Cell Group (CG) of a Cell Group where a PDCP anchor corresponding to the DRB is located.
In an embodiment of the present invention, the first MAC entity is a MAC entity corresponding to a main RLC entity corresponding to the DRB.
In an implementation, when one PDCP entity is associated with two RLC entities, the primary RLC entity may be indicated by PDCP configuration information in RRC signaling.
In an embodiment of the present invention, the first MAC entity is a MAC entity corresponding to a Master Cell Group (MCG) corresponding to the DRB.
In a specific implementation, before acquiring one DRB configured with the PDCP copy function, the first MAC entity may also be explicitly indicated through signaling.
In an embodiment of the present invention, before acquiring a DRB configured with a PDCP copy function, the method for indicating activation/deactivation of the PDCP copy function further includes: indicating the first MAC entity through DRB configuration information in RRC signaling.
In a specific implementation, 1 bit may be added to the DRB configuration information in the RRC signaling, and then the first MAC entity is indicated by the added 1 bit.
In an embodiment of the present invention, before acquiring a DRB configured with a PDCP copy function, the method for indicating activation/deactivation of the PDCP copy function further includes: indicating the first MAC entity by a fourth bitmap.
In a specific implementation, the fourth bitmap may be carried by any one of the following manners to indicate the first MAC entity: RRC signaling, MAC signaling, Physical layer (PHY) signaling.
In a specific implementation, for a DRB configured with a CA PDCP replication function (i.e., the DRB is configured with both a CA function and a PDCP function), one DRB corresponds to one MAC entity, and the MAC entity corresponding to the DRB is directly selected as the first MAC entity.
Step S103, sending a MAC CE through the first MAC entity, and instructing to activate/deactivate the PDCP copy function of the DRB.
In a specific implementation, activation/deactivation of the PDCP copy function of the DRB may be indicated by a Bitmap (Bitmap) in the MAC CE.
In an embodiment of the present invention, the MAC CE includes: and a bit in the first bitmap corresponds to all DRBs which belong to a first UE and are configured with a PDCP copy function in a one-to-one manner, wherein the first UE is the UE corresponding to the MAC CE, and the activation/deactivation of the PDCP copy function of the DRBs is indicated through the bit in the first bitmap.
In an embodiment of the present invention, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to first DRBs one to one, and the first DRBs include: and all the DRBs of which the activation/deactivation states belong to the first UE and the configured PDCP copy function are controlled by the first MAC entity, wherein the first UE is the UE corresponding to the MAC CE and indicates to activate/deactivate the PDCP copy function of the DRBs through a bit in the second bitmap.
In an embodiment of the present invention, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs configured with a CA PDCP copy function and corresponding to the first MAC entity, wherein the first UE is the UE corresponding to the MAC CE and indicates activation/deactivation of the PDCP copy function of the DRBs through bits in the third bitmap.
By applying the scheme, the first MAC entity is selected, the MAC CE is sent by the first MAC entity, and activation/deactivation of the PDCP copy function of the DRB is indicated, so that the UE can accurately acquire the indication signaling corresponding to activation/deactivation of the PDCP copy functions of different DRBs after receiving the indication signaling for activating/deactivating the PDCP copy functions sent by a plurality of MAC CEs, and the PDCP copy functions are normally activated/deactivated. Meanwhile, the signaling interaction of an Xn interface can be avoided, and further the transmission delay and the signaling overhead are avoided.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a mapping relationship diagram of a DRB and different protocol layers, as shown in fig. 2.
In an embodiment of the present invention, referring to fig. 2, for a certain UE configured with a CA function and a DC function, 4 DRBs are corresponding to each other, and respectively: DRB1, DRB2, DRB3 and DRB4, wherein:
the DRBs 1 and DRBs 4 are DRBs configured with CA PDCP copy function, and the DRBs 1 correspond to MCGs, and the DRBs 4 correspond to Secondary Cell Groups (SCGs);
the DRBs 2 and the DRBs 3 are DRBs configured with DC PDCP replication function and are Split bearers (Split Bearer). For DRB2, the cell group where the PDCP anchor point is located is MCG; for the DRB3, the cell group where its PDCP anchor is located is SCG.
By applying the above scheme, the MAC entity corresponding to the Cell Group (CG) where the PDCP anchor corresponding to the DRB is located is selected as the first MAC entity, and at the same time, the activation/deactivation of the PDCP copy function of different DRBs is indicated by selecting a bit in the first bitmap, and then the bitmaps sent by the MCG MAC21 and the SCG MAC22 are respectively:
for the MCG MAC21, bits in the first bitmap included in its CE correspond one-to-one to DRB1, DRB2, DRB3, and DRB4, but since the DRBs controlled by the MCG MAC21 are DRB1 and DRB2, only the bits corresponding to DRB1 and DRB2 are valid bits indicating activation/deactivation of the PDCP copy function.
For the SCG MAC22, bits in the first bitmap included in its CE correspond one-to-one to DRB1, DRB2, DRB3, and DRB4, but since the DRBs controlled by the MCG MAC22 are DRB3 and DRB4, only the bits corresponding to DRB3 and DRB4 are valid bits indicating activation/deactivation of the PDCP copy function.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides another mapping relationship diagram of the DRB and different protocol layers, as shown in fig. 3.
In an embodiment of the present invention, referring to fig. 3, for a certain UE configured with a CA function and a DC function, 4 DRBs are corresponding to each other, and respectively: DRB1, DRB2, DRB3 and DRB4, wherein:
the DRBs 1 and DRBs 4 are DRBs configured with CA PDCP copy function, and the DRBs 1 correspond to MCGs, and the DRBs 4 correspond to Secondary Cell Groups (SCGs);
the DRBs 2 and the DRBs 3 are DRBs configured with DC PDCP replication function and are Split bearers (Split Bearer). For DRB2, the cell group where the PDCP anchor point is located is MCG; for the DRB3, the cell group where its PDCP anchor is located is SCG.
By applying the above scheme, the MAC entity corresponding to the Cell Group (CG) where the PDCP anchor corresponding to the DRB is located is selected as the first MAC entity, and at the same time, a bit in the second bitmap is selected to indicate activation/deactivation of PDCP copy functions of different DRBs, and then the bitmaps sent by the MCG MAC31 and the SCG MAC32 are respectively:
for MCG MAC31, since DRBs controlled by MCG MAC31 are DRB1 and DRB2, bits in the second bitmap included in its CE correspond to DRB1 and DRB2, and all bits in the second bitmap are valid bits indicating activation/deactivation of the PDCP copy function.
For SCG MAC32, since DRBs controlled by MCG MAC32 are DRB3 and DRB4, bits in the second bitmap included in its CE correspond one-to-one to DRB3 and DRB4, and all bits in the second bitmap are valid bits indicating activation/deactivation of the PDCP copy function.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a schematic diagram of a mapping relationship between a DRB and different protocol layers, as shown in fig. 4.
In an embodiment of the present invention, referring to fig. 4, for a certain UE configured with a CA function and a DC function, 4 DRBs are corresponding to each other, and respectively: DRB1, DRB2, DRB3 and DRB4, wherein:
the DRBs 1 and DRBs 4 are DRBs configured with CA PDCP copy function, and the DRBs 1 correspond to MCGs, and the DRBs 4 correspond to Secondary Cell Groups (SCGs);
the DRBs 2 and the DRBs 3 are DRBs configured with DC PDCP replication function and are Split bearers (Split Bearer). For DRB2, the cell group where the PDCP anchor point is located is MCG; for the DRB3, the cell group where its PDCP anchor is located is SCG.
By applying the above scheme, the MAC entity corresponding to the Cell Group (CG) where the PDCP anchor corresponding to the DRB is located is selected as the first MAC entity, and at the same time, the activation/deactivation of the PDCP copy function of different DRBs is indicated by selecting a bit in the third bitmap, and then the bitmaps sent by the MCG MAC41 and the SCG MAC42 are respectively:
for MCG MAC41, bits in the third bitmap included in its CE correspond one-to-one to DRB1, DRB2, and DRB3, but since DRBs controlled by MCG MAC41 are DRB1 and DRB2, only bits corresponding to DRB1 and DRB2 are valid bits indicating activation/deactivation of the PDCP copy function.
For the SCG MAC42, bits in the third bitmap included in its CE correspond one-to-one to the DRBs 2, DRBs 3, and DRBs 4, but since the DRBs controlled by the MCG MAC42 are the DRBs 3 and DRBs 4, only the bits corresponding to the DRBs 3 and DRBs 4 are valid bits indicating activation/deactivation of the PDCP copy function.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a method for acquiring the indication signaling of activating/deactivating the PDCP copy function, as shown in fig. 5.
Referring to fig. 5, the method for acquiring the activation/deactivation PDCP copy function indication signaling includes the following steps:
in step S501, a MAC CE is received by a first MAC entity.
In a specific implementation, since the base station may instruct activation/deactivation of the PDCP copy function of the DRB through the MAC CE, the MAC CE transmitted by the base station is first received through the first MAC entity.
Step S502, acquiring an indication signaling for activating/deactivating a PDCP copy function of a third DRB based on the received MAC CE, wherein the third DRB is: and a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity.
In a specific implementation, the MAC CE is only used to instruct activation/deactivation of PDCP functions of DRBs controlled by the first MAC entity.
In a specific implementation, the third DRB may be a DRB configured with a DC PDCP copying function, or a DRB configured with a CA PDCP copying function.
In a specific implementation, when the third DRB is a DRB configured with the DC PDCP replication function, one DRB corresponds to two MAC entities, and the first MAC entity controlling the first DRB may be determined according to a certain criterion. For example, the MAC entity corresponding to the master RLC entity corresponding to the third DRB is determined to be the first MAC entity.
In an embodiment of the present invention, the third DRB is a Split Bearer (Split Bearer), and the first MAC entity may be a MAC entity corresponding to a cell group where a PDCP anchor corresponding to the third DRB is located.
In an embodiment of the present invention, the first MAC entity may be a MAC entity corresponding to a main RLC entity corresponding to the third DRB.
In an implementation, when one PDCP entity is associated with two RLC entities, the primary RLC entity may be indicated by PDCP configuration information in RRC signaling.
In an embodiment of the present invention, the first MAC entity may be a MAC entity corresponding to a master cell group corresponding to the third DRB.
In a specific implementation, the first MAC entity may also be explicitly obtained through signaling.
In an embodiment of the present invention, before receiving the MAC CE through the first MAC entity, the method for acquiring the activation/deactivation PDCP copy function indication signaling further includes: receiving RRC signaling; and acquiring the first MAC entity through DRB configuration information in the RRC signaling.
In an embodiment of the present invention, before receiving the MAC CE through the first MAC entity, the method for acquiring the activation/deactivation PDCP copy function indication signaling further includes: acquiring a bitmap; and acquiring the first MAC entity through the bitmap.
In a specific implementation, the bitmap may be obtained by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
In a specific implementation, for a DRB configured with a CA PDCP replication function (i.e., the DRB is configured with both a CA function and a PDCP function), one DRB corresponds to one MAC entity, and the MAC entity is the MAC entity controlling the DRB. Therefore, for the DRB configured with the CA PDCP replication function, the first MAC entity is the MAC entity corresponding to the DRB configured with the CA PDCP replication function.
In a specific implementation, the base station may instruct activation/deactivation of the PDCP copy function of the DRB through a Bitmap (Bitmap) in the MAC CE, so that the terminal may acquire an instruction signaling for activating/deactivating the PDCP copy function of the third DRB based on the received MAC CE.
In an embodiment of the present invention, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs configured with a PDCP copy function one to one; acquiring an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB through the first bitmap.
In an embodiment of the present invention, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to all DRBs of which the activation/deactivation states of the configured PDCP copy function are controlled by the first MAC entity one by one; acquiring an indication signaling indicating activation/deactivation of the PDCP copy function of the third DRB through the second bitmap.
In an embodiment of the present invention, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs configured with a DC PDCP copy function and DRBs configured with a CAPDCP copy function corresponding to the first MAC entity; acquiring an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB through the third bitmap.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a base station capable of implementing the above indication method for activating/deactivating a PDCP multiplexing function, as shown in fig. 6.
Referring to fig. 6, the base station 60 includes: a first acquisition unit 61, a selection unit 62, and a first instruction unit 63, wherein:
the first obtaining unit 61 is adapted to obtain a DRB configured with a PDCP copy function.
The selecting unit 62 is adapted to select a first MAC entity, where the first MAC entity is a MAC entity that controls an activation/deactivation state of a PDCP copy function of the DRB.
The first indicating unit 63 is adapted to send a MAC CE through the first MAC entity to indicate activation/deactivation of the PDCP copy function of the DRB.
In a specific implementation, the DRB is a DRB configured with a DC PDCP copy function.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the DRB is located.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the DRB.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the main cell group corresponding to the DRB.
In a specific implementation, the base station 60 further includes: a second indicating unit (not shown) adapted to indicate the first MAC entity through DRB configuration information in RRC signaling.
In an embodiment of the present invention, the second indicating unit is adapted to add 1 bit to DRB configuration information in RRC signaling, and indicate the first MAC entity through the added 1 bit.
In a specific implementation, the base station 60 further includes: a third indicating unit (not shown) adapted to indicate the first MAC entity by a fourth bitmap.
In an embodiment of the present invention, the third indicating unit is adapted to indicate the first MAC entity by carrying the fourth bitmap in any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
In an embodiment of the present invention, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one, and the first UE is a UE corresponding to the MAC CE; the first indicating unit 63 is adapted to indicate activation/deactivation of a PDCP copy function of the DRB by a bit in the first bitmap.
In an embodiment of the present invention, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to first DRBs one to one, and the first DRBs include: all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity, the first UE being a UE corresponding to the MAC CE; the first indicating unit 63 is adapted to indicate activation/deactivation of a PDCP copy function of the DRB by a bit in the second bitmap.
In an embodiment of the present invention, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs configured with a CAPDCP copy function and corresponding to the first MAC entity, wherein the first UE is a UE corresponding to the MAC CE; the first indicating unit 63 is adapted to indicate activation/deactivation of a PDCP copy function of the DRB by a bit in the third bitmap.
In a specific implementation, the working procedure and the principle of the base station 60 may refer to the description in the method provided in the foregoing embodiment, and are not described herein again.
In order to make those skilled in the art better understand and implement the present invention, the embodiment of the present invention further provides a terminal capable of implementing the above method for acquiring an indication signaling for activating/deactivating a PDCP multiplexing function, as shown in fig. 7.
Referring to fig. 7, the terminal 70 includes: a first receiving unit 71 and a second obtaining unit 72, wherein:
the first receiving unit 71 is adapted to receive the MAC CE via the first MAC entity.
The second obtaining unit 72 is adapted to obtain an indication signaling for activating/deactivating a PDCP copy function of a third DRB based on the received MAC CE, where the third DRB is: and a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity.
In a specific implementation, the third DRB is a DRB configured with a DC PDCP copy function.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the third DRB is located.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the third DRB.
In an embodiment of the present invention, the first MAC entity is: and the MAC entity corresponding to the master cell group corresponding to the third DRB.
In a specific implementation, the terminal 70 may further include: a second receiving unit (not shown) and a third acquiring unit (not shown), wherein:
the second receiving unit is suitable for receiving RRC signaling.
The third obtaining unit is adapted to obtain the first MAC entity through DRB configuration information in the RRC signaling.
In a specific implementation, the terminal 70 may further include: a fourth acquisition unit (not shown) and a fifth acquisition unit (not shown), wherein:
the fourth obtaining unit is adapted to obtain a fourth bitmap.
The fifth obtaining unit is adapted to obtain the first MAC entity through the fourth bitmap.
In an embodiment of the present invention, the fourth obtaining unit is adapted to obtain the fourth bitmap by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
In an embodiment of the present invention, the MAC CE includes: a first bitmap, wherein bits in the first bitmap correspond to all DRBs configured with a PDCP copy function one to one; the second obtaining unit 72 is adapted to obtain, through the first bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
In an embodiment of the present invention, the MAC CE includes: a second bitmap, wherein bits in the second bitmap correspond to all DRBs of which the activation/deactivation states of the configured PDCP copy function are controlled by the first MAC entity one by one; the second obtaining unit 72 is adapted to obtain, through the second bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
In an embodiment of the present invention, the MAC CE includes: a third bitmap, bits in the third bitmap corresponding to second DRBs one-to-one, wherein the second DRBs include: all DRBs configured with a DC PDCP copy function and DRBs configured with a CAPDCP copy function corresponding to the first MAC entity; the second obtaining unit 72 is adapted to obtain, through the third bitmap, an indication signaling indicating activation/deactivation of a PDCP copy function of the third DRB.
In a specific implementation, the working flow and the principle of the terminal 70 may refer to the description in the method provided in the above embodiment, and are not described herein again.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which a computer instruction is stored, where the computer instruction executes, when running, a step corresponding to any one of the above methods for indicating activation/deactivation of a PDCP multiplexing function or a method for acquiring an indication signaling of activation/deactivation of a PDCP multiplexing function, which is not described herein again.
An embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes, when executing the computer instruction, any of the above steps corresponding to the acquisition of the activation/deactivation PDCP multiplexing function indication signaling, which is not described herein again.
An embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes, when executing the computer instruction, a step corresponding to any one of the above methods for acquiring an indication signaling for activating/deactivating a PDCP multiplexing function, which is not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (37)

1. An indication method for activating/deactivating a PDCP copy function, comprising:
acquiring a DRB configured with a PDCP copy function;
selecting a first MAC entity, which is a MAC entity controlling an activation/deactivation state of a PDCP copy function of the DRB;
transmitting a MAC CE through the first MAC entity to indicate activation/deactivation of a PDCP duplication function of the DRB;
the MAC CE comprises the following steps: a first bitmap, a second bitmap, or a third bitmap; indicating activation/deactivation of a PDCP copy function of the DRB through the first bitmap, the second bitmap or the third bitmap;
wherein, the bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one;
bits in the second bitmap correspond to first DRBs one-to-one, wherein the first DRBs include:
all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity;
bits in the third bitmap correspond to second DRBs one-to-one, where the second DRBs include:
all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs corresponding to the first MAC entity and configured with a CA PDCP copy function;
and the first UE is the UE corresponding to the MAC CE.
2. The indication method for activating/deactivating the PDCP replication function of claim 1, wherein the DRB is a DRB configured with a DC PDCP replication function.
3. The method for indicating activation/deactivation of PDCP copy function according to claim 2, wherein the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the DRB is located.
4. The method for indicating activation/deactivation of PDCP copy function according to claim 2, wherein the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the DRB.
5. The method for indicating activation/deactivation of PDCP copy function according to claim 2, wherein the first MAC entity is: and the MAC entity corresponding to the main cell group corresponding to the DRB.
6. The method for indicating activation/deactivation of PDCP copy function according to claim 2, further comprising, before acquiring a DRB configured with the PDCP copy function: indicating the first MAC entity through DRB configuration information in RRC signaling.
7. The method of indicating activation/deactivation of PDCP replication function of claim 6, wherein the indicating the first MAC entity through DRB configuration information in RRC signaling comprises:
adding 1 bit in DRB configuration information in RRC signaling;
indicating the first MAC entity by an increased 1 bit.
8. The method for indicating activation/deactivation of PDCP copy function according to claim 2, further comprising, before acquiring a DRB configured with the PDCP copy function: indicating the first MAC entity by a fourth bitmap.
9. The method for indicating activation/deactivation of PDCP copy function according to claim 8, wherein the indicating the first MAC entity through the fourth bitmap comprises: carrying the fourth bitmap by any one of the following ways, indicating the first MAC entity: RRC signaling, MAC signaling, PHY signaling.
10. A method for acquiring an indication signaling for activating/deactivating a PDCP copy function (PDCP) is characterized by comprising the following steps:
receiving, by a first MAC entity, a MAC CE;
acquiring an indication signaling for activating/deactivating a PDCP duplication function of a third DRB based on the received MAC CE, wherein the third DRB is as follows: a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity;
the MAC CE comprises the following steps: a first bitmap, a second bitmap, or a third bitmap; acquiring an indication signaling for activating/deactivating the PDCP copy function of the DRB through the first bitmap, the second bitmap or the third bitmap;
wherein, the bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one;
bits in the second bitmap correspond to first DRBs one-to-one, wherein the first DRBs include:
all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity;
bits in the third bitmap correspond to second DRBs one-to-one, where the second DRBs include:
all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs corresponding to the first MAC entity and configured with a CA PDCP copy function;
and the first UE is the UE corresponding to the MAC CE.
11. The method for acquiring activation/deactivation PDCP copy function indication signaling according to claim 10, wherein the third DRB is a DRB configured with a DC PDCP copy function.
12. The method for acquiring activation/deactivation PDCP copy function indication signaling according to claim 11, wherein the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the third DRB is located.
13. The method for acquiring activation/deactivation PDCP copy function indication signaling according to claim 11, wherein the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the third DRB.
14. The method for acquiring activation/deactivation PDCP copy function indication signaling according to claim 11, wherein the first MAC entity is: and the MAC entity corresponding to the master cell group corresponding to the third DRB.
15. The method for acquiring activation/deactivation PDCP replication function indication signaling according to claim 11, further comprising, before receiving the MAC CE through the first MAC entity:
receiving RRC signaling;
and acquiring the first MAC entity through DRB configuration information in the RRC signaling.
16. The method for acquiring activation/deactivation PDCP replication function indication signaling according to claim 11, further comprising, before receiving the MAC CE through the first MAC entity:
acquiring a fourth graph;
and acquiring the first MAC entity through the fourth bitmap.
17. The method of acquiring activation/deactivation PDCP copy function indication signaling according to claim 16, wherein the acquiring bitmap comprises: obtaining the fourth map by any one of the following methods: RRC signaling, MAC signaling, PHY signaling.
18. A base station, comprising:
a first obtaining unit, adapted to obtain a DRB configured with a PDCP copy function;
a selecting unit adapted to select a first MAC entity, the first MAC entity being a MAC entity that controls an activation/deactivation state of a PDCP copy function of the DRB;
a first indication unit, adapted to send a MAC CE through the first MAC entity, indicating activation/deactivation of a PDCP copy function of the DRB;
the MAC CE comprises the following steps: a first bitmap, a second bitmap, or a third bitmap; indicating activation/deactivation of a PDCP copy function of the DRB through the first bitmap, the second bitmap or the third bitmap;
wherein, the bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one;
bits in the second bitmap correspond to first DRBs one-to-one, wherein the first DRBs include:
all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity;
bits in the third bitmap correspond to second DRBs one-to-one, where the second DRBs include:
all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs corresponding to the first MAC entity and configured with a CA PDCP copy function;
and the first UE is the UE corresponding to the MAC CE.
19. The base station of claim 18, wherein the DRB is a DRB configured with DC PDCP copy function.
20. The base station of claim 19, wherein the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the DRB is located.
21. The base station of claim 19, wherein the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the DRB.
22. The base station of claim 19, wherein the first MAC entity is: and the MAC entity corresponding to the main cell group corresponding to the DRB.
23. The base station of claim 19, further comprising: a second indicating unit, adapted to indicate the first MAC entity through DRB configuration information in RRC signaling.
24. The base station of claim 23, wherein the second indicating unit is adapted to add 1 bit to DRB configuration information in RRC signaling, and indicate the first MAC entity by the added 1 bit.
25. The base station of claim 19, further comprising: a third indication unit adapted to indicate the first MAC entity through a fourth bitmap.
26. The base station of claim 25, wherein the third indicating unit is adapted to carry the fourth bitmap to indicate the first MAC entity by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
27. A terminal, comprising:
a first receiving unit adapted to receive the MAC CE through a first MAC entity;
a second obtaining unit, adapted to obtain an indication signaling for activating/deactivating a PDCP copying function of a third DRB based on the received MAC CE, where the third DRB is: a DRB whose activation/deactivation state of the configured PDCP copy function is controlled by the first MAC entity;
the MAC CE comprises the following steps: a first bitmap, a second bitmap, or a third bitmap; acquiring an indication signaling for activating/deactivating the PDCP copy function of the DRB through the first bitmap, the second bitmap or the third bitmap;
wherein, the bits in the first bitmap correspond to all DRBs belonging to a first UE and configured with a PDCP copy function one to one;
bits in the second bitmap correspond to first DRBs one-to-one, wherein the first DRBs include:
all DRBs belonging to a first UE and having an activated/deactivated state of a configured PDCP copy function controlled by the first MAC entity;
bits in the third bitmap correspond to second DRBs one-to-one, where the second DRBs include:
all DRBs belonging to a first UE and configured with a DC PDCP copy function and DRBs corresponding to the first MAC entity and configured with a CA PDCP copy function;
and the first UE is the UE corresponding to the MAC CE.
28. The terminal of claim 27, wherein the third DRB is a DRB configured with a dcpdp copy function.
29. The terminal of claim 28, wherein the first MAC entity is: and the MAC entity corresponding to the cell group where the PDCP anchor point corresponding to the third DRB is located.
30. The terminal of claim 28, wherein the first MAC entity is: and the MAC entity corresponding to the main RLC entity corresponding to the third DRB.
31. The terminal of claim 28, wherein the first MAC entity is: and the MAC entity corresponding to the master cell group corresponding to the third DRB.
32. The terminal of claim 28, further comprising:
a second receiving unit adapted to receive RRC signaling;
a third obtaining unit, adapted to obtain the first MAC entity through DRB configuration information in the RRC signaling.
33. The terminal of claim 28, further comprising:
a fourth obtaining unit adapted to obtain a fourth bitmap;
a fifth obtaining unit adapted to obtain the first MAC entity through the fourth bitmap.
34. The terminal according to claim 33, wherein the fourth obtaining unit is adapted to obtain the fourth map by any one of the following manners: RRC signaling, MAC signaling, PHY signaling.
35. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, wherein the computer instructions, when executed, perform the steps of the method of any one of claims 1 to 9 or 10 to 17.
36. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 9.
37. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 10 to 17.
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