CN111510263B

CN111510263B - Remapping method, terminal and network side equipment

Info

Publication number: CN111510263B
Application number: CN201910091839.3A
Authority: CN
Inventors: 孙军帅; 王莹莹; 黄学艳; 韩星宇
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2023-05-09
Anticipated expiration: 2039-01-30
Also published as: CN111510263A

Abstract

The embodiment of the invention provides a remapping method, a terminal and network side equipment, wherein the remapping method for the terminal comprises the following steps: transmitting a first Radio Resource Control (RRC) signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB. The embodiment of the invention can improve the reliability of the remapping process.

Description

Remapping method, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a remapping method, a terminal, and a network side device.

Background

The concept of Remapping (Remapping) is proposed in the fifth Generation mobile communication technology (5 th-Generation, 5G).

In the related art, in order to ensure that a radio data bearer (Data Radio Bearer, DRB) for transmitting a data packet is switched from a source DRB to a target DRB in the remapping process, a data end identifier (Endmark) is added to a service data adaptation protocol data unit (Service Discovery Application Profile Protocol Data Unit, SDAP PDU), so that a receiving end can determine that all data transmitted on the source DRB has been sent according to the data end identifier, so that the radio data bearer can be switched to the target DRB to continue to receive the data, so as to avoid missing data transmission or repeated data transmission.

However, the SDAP PDU easily transmits a packet loss, so that the data end identifier cannot be accurately transmitted to the receiving end, and further the receiving end cannot determine whether remapping is successful, thereby causing poor reliability in the remapping process.

Disclosure of Invention

The embodiment of the invention provides a remapping method, a terminal and network side equipment, which are used for solving the problem of poor reliability in the remapping process.

In a first aspect, an embodiment of the present invention provides a remapping method, for a terminal, where the method includes:

transmitting a first radio resource control (Radio Resource Control, RRC) signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in remapping a quality of service Flow (Quality of Service Flow, qoS Flow) from a source data radio bearer, DRB, to a target DRB, an SDAP PDU is sent by the source DRB.

In a second aspect, an embodiment of the present invention provides a remapping method, for a network side device, where the method includes:

receiving a first Radio Resource Control (RRC) signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in the process of remapping a quality of service Flow QoS Flow from a source data radio bearer DRB to a target DRB, SDAP PDU sent by the source DRB;

And receiving the target SDAP PDU at the source DRB.

In a third aspect, an embodiment of the present invention further provides a terminal, including a first processor and a first transceiver:

the first transceiver is configured to send a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

In a fourth aspect, an embodiment of the present invention further provides a network side device, including a second processor and a second transceiver:

the second transceiver is configured to receive a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in the process of remapping a quality of service Flow QoS Flow from a source data radio bearer DRB to a target DRB, SDAP PDU sent by the source DRB;

the second transceiver is further configured to receive the target SDAP PDU at the source DRB.

In a fifth aspect, an embodiment of the present invention further provides a terminal, including: the method comprises the steps of a first memory, a third processor and a first computer program stored in the first memory and capable of running on the third processor, wherein the steps of the remapping method at the terminal side provided by the embodiment of the invention are realized when the first computer program is executed by the third processor.

In a sixth aspect, an embodiment of the present invention further provides a network side device, including: the method comprises the steps of a second memory, a fourth processor and a second computer program stored in the second memory and capable of running on the fourth processor, wherein the second computer program is executed by the fourth processor to realize the remapping method at the network side device side provided by the embodiment of the invention.

In a seventh aspect, the embodiment of the present invention further provides a computer readable storage medium, where a third computer program is stored, where the third computer program is executed by a fifth processor to implement the steps of the remapping method on the terminal side provided in the embodiment of the present invention; or the step of the remapping method at the network side equipment side provided by the embodiment of the invention is realized.

In the embodiment of the invention, a first Radio Resource Control (RRC) signaling is sent; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB. In this way, the first indication information for indicating the target SDAP PDU can be sent through the RRC signaling with high transmission reliability, and when the receiving end receives the RRC signaling, the SDAP PDU which is continuously sent through the source DRB in the remapping process is determined according to the first indication information, so that the reliability of signal transmission in the remapping process is improved, and the reliability of the remapping process is improved.

Drawings

FIG. 1 is a flow chart of a remapping method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a SDAP remapping process in a remapping method according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a second embodiment of a SDAP remapping process according to the present invention;

FIG. 4 is a flow chart of another remapping method provided by an embodiment of the present invention;

Fig. 5 is a block diagram of a first terminal according to an embodiment of the present invention;

fig. 6 is a block diagram of a second terminal according to an embodiment of the present invention;

FIG. 7 is a second block diagram of a second terminal according to an embodiment of the present invention;

FIG. 8 is a third block diagram of a second terminal according to an embodiment of the present invention;

fig. 9 is a fourth block diagram of a second terminal according to an embodiment of the present invention;

fig. 10 is a block diagram of a third terminal according to an embodiment of the present invention;

fig. 11 is a block diagram of a first network side device according to an embodiment of the present invention;

fig. 12 is a diagram of one of the second network side devices according to the embodiment of the present invention;

fig. 13 is a second block diagram of a second network side device according to the embodiment of the present invention;

fig. 14 is a third block diagram of a second network side device according to the embodiment of the present invention;

fig. 15 is a diagram showing a structure of a second network side device according to an embodiment of the present invention;

fig. 16 is a block diagram of a third network side device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention can be applied to a communication system, and in the SDAP remapping process, the source DRB corresponding to the QoS Flow is switched to the target DRB. The remapping method provided by the embodiment of the invention can accurately inform the terminal and the network side equipment to start remapping and determine the target SDAP PDU transmitted on the source DRB, thereby improving the reliability of the remapping process and avoiding confusion between the SDAP PDU which is transmitted completely and the SDAP PDU which is transmitted subsequently.

The terminal may be a User Equipment (UE) or other terminal devices, for example: terminal-side devices such as cell phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop computers), personal digital assistants (Personal Digital Assistant, PDAs), mobile internet appliances (Mobile Internet Device, MIDs), or Wearable devices (wearmable devices). The network side device may be a base station, for example: macro station, LTE eNB, 5G NR NB, etc.; the network side device may also be a small station, such as a Low Power Node (LPN), pico, femto, etc., or the network side device may be an Access Point (AP); the base station may also be a network node formed by a Central Unit (CU) together with a plurality of transmission reception points (Transmission Reception Point, TRP) managed and controlled by the Central Unit (CU). It should be noted that, in the embodiment of the present invention, specific types of the terminal and the network side device are not limited.

Referring to fig. 1, fig. 1 is a flowchart of a remapping method according to an embodiment of the present invention, where the remapping method is applied to a terminal, as shown in fig. 1, and the method includes the following steps:

step 101, sending a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

The source DRB may be referred to as an "original DRB", and refers to a DRB used for transmitting the SDAP PDU before remapping. The target DRB is a DRB for transmitting the SDAP PDU after remapping.

In addition, when the QoS flow and DRB of the SDAP are remapped (remapped), by carrying the indication information of the SDAP PDU continuously sent by the source DRB in the RRC signaling with high transmission reliability, the indication information can be ensured to be reliably transmitted to the peer device, so that the peer device can receive the SDAP PDU sent by the source DRB according to the indication information, and correct reception of the SDAP PDU can be achieved.

As an alternative embodiment, before sending the first RRC signaling, the method further includes:

receiving a second RRC signaling sent by network side equipment, wherein the second RRC signaling is used for indicating that the QoS Flow is remapped from a source DRB to a target DRB;

or (b)

And receiving the SDAP PDU sent by the network side equipment, wherein the SDAP PDU carries a remapping indication bit, and the remapping indication bit indicates that the QoS Flow is remapped from the source DRB to the target DRB.

The above steps are used for informing the terminal to start remapping, and after determining that remapping is needed, the terminal performs step 101, i.e. counts the number of target SDAP PDUs to be sent by the source DRB, and feeds back the number to the network side device.

And under the condition that the network side equipment sends a second RRC signaling to inform the terminal to remap the QoS Flow from the source DRB to the target DRB, the second RRC signaling can carry the mapping relation between the source DRB and the QoS Flow. Therefore, after the terminal receives the second RRC signaling, the terminal can remap the second RRC signaling from the source DRB to the target DRB according to the carried mapping relation QoS Flow.

For example: the remapping of the SDAP is configured directly by RRC connection reconfiguration (RRC Connection Reconfiguration) signaling, which is done (RRC Connection Reconfiguration Complete) as corresponding feedback signaling to determine to turn on the remapping of the SDAP. At this time, the RRC connection reconfiguration signaling is used as the second RRC signaling, and the RRC connection reconfiguration is completed as the first RRC signaling. It should be noted that, besides the RRC connection reconfiguration signaling, the second RRC connection reconfiguration signaling and the RRC connection reconfiguration completion signaling may also be other RRC signaling, such as reset RRC signaling, where the second RRC signaling is not limited, and the corresponding first RRC signaling is not limited.

In this embodiment, due to high transmission reliability of RRC signaling, timeliness and reliability of notifying the terminal to start the remapping process can be improved.

In addition, for the remapping indication bit carried in the SDAP PDU sent by the receiving network side device, in a manner of indicating the terminal to remap the QoS Flow from the source DRB to the target DRB, the remapping indication bit may be a preset indication bit newly added in the SDAP PDU, for example: adding a burst to the header of the SDAP PDU, indicating that remapping is performed when the burst is equal to 1, and indicating that remapping is not performed when the burst is equal to 0, thereby continuing to transmit the SDAP PDU on the source DRB. It should be noted that, in the embodiment of the present invention, the specific form of the remapped indicator bit is not limited.

Of course, the remap indicator bit may also be a reflective data indicator bit (Reflective Data Indicator, RDI) or a reflective QoS indicator bit (Reflective QoS Indicator, RQI) in the SDAP PDU header. After the SDAP received by the terminal sends the SDAP PDU carrying the RDI or RQI to the network side equipment, the SDAP PDU can be determined to be remapped, and then the RRC signaling is triggered to send the first RRC signaling to reply. In this way, the terminal can be informed to start remapping using RDI and RQI carried in the existing SDAP PDU.

Of course, other indicator bits may also be included in the remapped indicator bits, such as: an indication bit of a source DRB, an indication bit of a target DRB, etc.

As an alternative embodiment, the first indication information includes:

the quantity indication information is used for indicating the quantity of the target SDAP PDU;

and the identification indication information is used for indicating the identification of at least one SDAP PDU in the target SDAP PDUs.

The identifier of the at least one SDAP PDU may be any one of identifier information of the first transmitted SDAP PDU or identifier information of the last transmitted SDAP PDU, and the like in the target SDAP PDU.

Of course, in the embodiment of the present invention, the first indication information may also be SN of each target SDAP PDU, so as to adapt to the situation that SN of the target SDAP PDU is discontinuous.

Of course, in a specific embodiment of the present invention, the first indication information may also include only the number of target SDAP PDUs, and the network side continues to send the source DRB to the destination SDAP PDU after receiving the corresponding number of SDAP PDUs.

Preferably, the identity indication information indicates that the identity of the SDAP PDU may be the unique identity information pdu_id of the first transmitted SDAP PDU in the target SDAP PDU.

The pdu_id may be an SN number of a PDCP PDU corresponding to the SDAP PDU allocated to the packet data convergence protocol (Packet Data Convergence Protocol, PDCP) protocol sublayer, or a count value (COUNTER value) calculated by the PDCP protocol sublayer corresponding to the SN number through a superframe number (Hyper Frame Number, HFN) and the SN number.

It should be noted that, the pdu_id may further include identification information of a service quality stream to which the corresponding SDAP PDU belongs, for example: qoS Flow ID (QFI), identification information of source DRB, for example: DRB ID and identification information of the target DRB, for example: DRB ID, etc.

In this embodiment, after the terminal is informed of remapping, the number of the target SDAP PDU is determined and the first packet in the target SDAP PDU starts to be transmitted, when the receiving end device receives the packet indicated by the identification indication information, the receiving end device counts the received packet, and after the count reaches the number of packets indicated by the number indication information, it can be confirmed that all the packets transmitted on the source DRB have been received.

Of course, in the embodiment of the present invention, the SN list of the target SDAP PDU may be determined according to the number indication information and the identification indication information, and whether all the data packets transmitted on the source DRB have been received is confirmed according to the list.

As an optional implementation manner, before the sending the first RRC signaling, the method further includes:

and determining the target SDAP PDU according to the transceiving information of the packet data convergence protocol PDCP entity.

Wherein the target SDAP PDU may be an SDAP SDU that has been transmitted to the PDCP entity through the source DRB and needs to be continued on the source DRB.

In addition, after receiving the second RRC signaling, the SDAP entity of the terminal side collates the SDAP SDUs sent on the source DRB, so as to send the SDAP PDU that has not yet been sent to the PDCP entity through the target DRB, and send the SDAP PDU that has been sent to the PDCP entity through the source DRB and the SDAP SDUs that need to be continuously sent on the source DRB to the PDCP entity through the source DRB, that is, it is determined that the target SDAP PDU includes the SDAP PDU that has been sent to the PDCP entity through the source DRB and the SDAP SDUs that need to be continuously sent on the source DRB.

In addition, for the SDAP SDUs not transmitted to the PDCP entity, the SDAP SDUs can be transmitted through the target DRB after switching the source DRB to the target DRB. The problem that SDAP SDUs are transmitted by the target DRB immediately after the DRB is switched, so that SDAP SDUs are transmitted in disorder before and after switching can be avoided.

As an alternative embodiment, the first RRC signaling is RRC connection reconfiguration complete signaling (RRC Connection Reconfiguration Complete).

And a field can be added in the RRC connection reconfiguration completion signaling to indicate the number of SDAP SDUs continuously transmitted through the source DRB in the process from the beginning to the ending of the remapping through the added field. Of course, the RRC connection reconfiguration complete signaling further includes the pdu_id in the above embodiment and the total number of packets to be transmitted.

For example: the source code of the RRC connection reconfiguration complete signaling is expressed as:

the RRC connection reconfiguration complete signaling includes pdu_id, pdu_number (i.e., the Number of the target SDAP PDUs), QFI, and DRB ID. The pdu_id may be an SN number of the PDCP PDU corresponding to the SDAP PDU allocated to the PDCP protocol sublayer, or a COUNTER value calculated by the PDCP protocol sublayer corresponding to the SN number through HFN and SN number.

Referring to fig. 2, a flowchart of another remapping method provided by the present invention is shown, and the method is applied to a network device, as shown in fig. 2, and includes the following steps:

step 201, receiving a first Radio Resource Control (RRC) signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

Step 202, receiving the target SDAP PDU at the source DRB.

And after the network side equipment receives the target SDAP PDU on the source DRB, switching to the target DRB to continuously receive the SDAP PDU of the QoS Flow.

Optionally, before the receiving the first RRC signaling, the remapping method further includes:

transmitting a second RRC signaling, the second RRC signaling being used to indicate remapping of the QoS Flow from the source DRB to the target DRB;

or (b)

And transmitting the SDAP PDU, wherein the SDAP PDU carries a remapping indicating bit which indicates that the QoS Flow is remapped from the source DRB to the target DRB.

Optionally, the first indication information includes:

Optionally, the first RRC signaling is RRC connection reconfiguration complete signaling.

Optionally, after receiving the first RRC signaling, the remapping method further includes:

configuring the first indication information to an SDAP layer entity;

the receiving the target SDAP PDU at the source DRB specifically comprises:

and the SDAP layer entity receives the target SDAP PDU at the source DRB according to the first indication information.

After receiving the configuration of the first RRC signaling, the network side SDAP layer entity (also referred to as a network side SDAP protocol sublayer) retains the information of the SDAP PDU, and starts to correctly order the SDAP PDU received on the source DRB and the target DRB, so as to submit the received SDAP PDU to a higher layer according to a normal order.

The embodiment of the invention uses the network side equipment as an execution main body, and the executed steps correspond to the steps executed by the terminal in the embodiment of the method shown in fig. 1, and can obtain the same beneficial effects, and in order to avoid repetition, the description is omitted.

The remapping method is exemplified in the following in connection with the steps performed by the terminal and the network side device.

Example 1

Referring to fig. 3, in this embodiment, the terminal and the network side device perform information interaction through RRC signaling to perform SDAP remapping. As shown in fig. 3, the SDAP remapping process includes the following:

step 1, the SDAP protocol sub-layer of the network side judges that the QoS Flow sent to the network side by the terminal side is to be remapped (remapped) to a new DRB, and then the indication information of the source DRB, the source QoS Flow, the target DRB and the target QoS Flow is sent to the RRC entity of the network side through RRC signaling.

The SDAP remapping process may be triggered by this step, and the RRC signaling sent by the SDAP remapping process and including the indication information of the source DRB, the source QoS Flow, the target DRB, and the target QoS Flow may be used as SDAP remapping request information for requesting SDAP remapping.

And step 2, after receiving the SDAP remapping request information, the network side RRC entity sends an RRC connection reconfiguration signaling to the terminal RRC entity according to the relation between the source DRB and the source QoS Flow and the relation between the target QoS Flow and the target DRB, wherein the RRC connection reconfiguration signaling carries the mapping relation between the target QoS Flow and the target DRB.

The RRC connection reconfiguration signaling is the second RRC signaling in the above embodiment, and the mapping relationship between the target QoS Flow and the target DRB is the SDAP remapping configuration information shown in fig. 3.

In this embodiment, the network side device sends the mapping relationship between the target QoS Flow and the target DRB through RRC connection reconfiguration signaling, so as to perform remapping configuration according to the mapping relationship.

And step 3, after the RRC entity at the terminal side receives the RRC connection reconfiguration signaling, resolving SDAP remapping configuration information, and configuring the SDAP remapping configuration information to the SDAP entity at the terminal side.

After receiving the configuration information, the SDAP entity starts to remap according to the mapping relation carried in the configuration information.

And 4, after receiving the SDAP remapping configuration information, the SDAP entity at the terminal side sorts SDAP service data units (Service Data Unit, SDU) sent on the source DRB, places SDAP PDUs which are not sent to the PDCP on the target DRB for sending, continues to send the SDAP PDUs which are sent to the PDCP on the source DRB and the target SDAP SDU which still needs to be sent continuously on the source DRB through the source DRB, and sends data packet information request information (namely SDAP PDU ID request information) to the PDCP entity of the source DRB.

In this embodiment, it may be determined according to the transceiving information of the PDCP entity that the target SDAP PDU includes an SDAP PDU already transmitted to the PDCP and a target SDAP SDU that further needs to be continuously transmitted on the source DRB, and requests that the target SDAP PDU be continuously transmitted on the source DRB, so as to request that the target SDAP PDU be transmitted on the source DRB.

Step 5, the source PDCP entity of the terminal side receives the above-mentioned SDAP PDU ID request information, and feeds back information such as the number of PDCP PDUs corresponding to the SDAP PDUs of the QoS Flow already stored locally by the source PDCP, the initial SN number or COUNTER value, and the SN number or COUNTER value that can be already transmitted to the terminal side SDAP entity (i.e., the SDAP PDU ID request information feedback information) according to the transmitted target SDAP PDU on the source DRB provided by the SDAP request information.

The SDAP request information is packet information request information sent by the SDAP of the terminal side to the PDCP of the source DRB in step 4, and the terminal determines pdu_id information of the target SDAP PDU according to the request information.

In addition, the initial SN or COUNTER value may be used as identification information of the first transmitted SDAP PDU in the target SDAP PDU. And combining the number of the target SDAP PDUs to timely determine whether the target SDAP PDUs are completely transmitted, so that the target SDAP PDUs can be timely switched to a target DRB for new transmission after the target SDAP PDUs are completely transmitted.

And step 6, after receiving the feedback information of the SDAP PDU ID request information, the SDAP entity determines to send the target SDAP PDU on the source DRB according to the feedback information, and reports the target SDAP PDU to the RRC entity through RRC signaling.

In this step, the target SDAP PDU is sent on the source DRB, and the SDAP PDU ID request information feedback information of the target SDAP PDU is reported to the network side through RRC signaling, so as to improve the transmission reliability.

And 7, after receiving the SDAP PDU ID request information feedback information, the terminal RRC entity sends an RRC connection reconfiguration completion signaling to the RRC entity at the network side, wherein the RRC connection reconfiguration completion signaling carries the indication information of the target SDAP PDU in the remapping process.

Wherein the indication information comprises quantity indication information, identification indication information and the like.

The step can inform the network side equipment through the RRC connection reconfiguration completion signaling, the terminal has received the remapping configuration, and the opposite terminal equipment can receive the SDAP PDU sent by the source DRB according to the indication information, so that the correct receipt of the SDAP PDU is realized.

And step 8, after the RRC entity at the network side receives the reply from the terminal side, the SDAP PDU information in the reply is configured to the SDAP entity at the network side.

The receiving, by the RRC entity of the network side, a reply from the terminal side refers to an RRC connection reconfiguration complete signaling that is received by the network side and carries indication information of the target SDAP PDU. After the indication information of the target SDAP PDU is configured to the SDAP entity, the data receiving end can conveniently and correctly sort the SDAP PDU received by the source DRB and the target DRB, and then submit the SDAP PDU to a higher layer according to the normal order.

The embodiment of the invention can realize each process of the remapping method shown in fig. 1 and fig. 2, and achieve the same beneficial effects, and is not repeated here.

Example 2

Referring to fig. 4, in this embodiment, the information interaction between the network side device and the terminal includes two modes, namely, SDAP PDU and RRC signaling, to perform SDAP remapping. As shown in fig. 4, the SDAP remapping process includes the following:

step 1, the network side SDAP protocol sublayer decides that the QoS Flow sent to the network side by the terminal side is to be remapped (remapped) to a new DRB, and then the mapping mode of carrying RQI or RDI in the SDAP PDU is sent to the SDAP of the terminal side.

In this step, the method includes triggering the SDAP remapping process by carrying the RQI or RDI in the SDAP PDU as the remapping indication information, and informing the SDAP on the terminal side of remapping.

Step 2, after receiving the SDAP PDU carrying RQI or RDI sent by the SDAP of the network side, the SDAP of the terminal side collates SDAP service data units (Service Data Unit, SDU) sent on the source DRB, sends the SDAP PDU which is not sent to the PDCP on the target DRB, sends the SDAP PDU which is sent to the PDCP and the target SDAP SDU which needs to be continuously sent on the source DRB, and sends data packet information request information to the PDCP of the source DRB.

After receiving the SDAP PDU carrying the RQI or RDI, the SDAP of the terminal side determines that SDAP remapping is needed, so as to carry out finishing analysis on the transceiving data on the PDCP, and determine the target SDAP PDU which needs to be sent on the source DRB.

Step 3, the source PDCP of the terminal side receives the request information of the SDAP, and feeds back the information such as the initial SN or the COUNTER value and the SN number or the COUNTER which can be sent to the SDAP according to the number of PDCP PDUs corresponding to the SDAP PDUs of the QoS Flow which are stored locally by combining with the target SDAP PDUs which are provided by the SDAP and sent on the source DRB.

And step 4, after receiving the response information sent by the PDCP of the terminal, the SDAP of the terminal sends the target SDAP PDU on the source DRB according to the response information, and reports the target SDAP PDU to the RRC of the terminal through RRC signaling.

And step 5, after receiving the response information of the SDAP, the terminal RRC sends RRC connection reconfiguration completion signaling to the RRC at the network side, wherein the RRC connection reconfiguration completion signaling carries the indication information of the target SDAP PDU in the remapping process.

And 6, after the RRC at the network side receives the reply at the terminal side, configuring SDAP PDU information in the reply to the SDAP.

After the SDAP of the network side receives the configuration of the RRC signaling of the network side, the indication information of the target SDAP PDU is reserved, correct ordering is started to the SDAP PDU received on the source DRB and the target DRB, and then the SDAP PDU is submitted to a higher layer according to the normal order.

The steps of the method in this embodiment are similar to those in embodiment 1, and the difference is that in embodiment 1, the triggered SDAP remapping is implemented through the RRC connection reconfiguration signaling sent by the network side device to the terminal, and in this embodiment, the remapping indication bit is carried in the SDAP PDU sent by the network side device to the terminal, so as to implement the triggered SDAP remapping. The method can realize the processes in the method embodiments shown in fig. 1 and fig. 2, and can achieve the same beneficial effects, and in order to avoid repetition, the description is omitted here.

Fig. 5 is a block diagram of a first terminal according to an embodiment of the present invention. As shown in fig. 5, the first terminal 500 includes a first processor 501 and a first transceiver 502:

the first transceiver 502 is configured to send a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

Wherein the first transceiver 502 may be used to receive and transmit data under the control of the first processor 501.

Optionally, the first transceiver 502 is further configured to receive a second RRC signaling sent by the network side device, where the second RRC signaling is used to indicate remapping the QoS Flow from the source DRB to the target DRB;

or (b)

The first transceiver 502 is further configured to receive an SDAP PDU sent by the network side device, where the SDAP PDU carries a remapping indication bit, where the remapping indication bit indicates that the QoS Flow is remapped from the source DRB to the target DRB.

Optionally, the first indication information includes:

Optionally, the first indication information further includes: the identification information of the quality of service flow and the identification information of the source DRB.

Optionally, the first processor 501 is configured to determine the target SDAP PDU according to the transceiving information of the packet data convergence protocol PDCP entity.

The first terminal provided in the embodiment of the present invention can implement each process executed by the terminal in the remapping method shown in fig. 1, and can obtain the same beneficial effects, so that repetition is avoided, and no detailed description is given here.

Referring to fig. 6, which is a block diagram of a second terminal according to an embodiment of the present invention, as shown in fig. 6, a second terminal 600 includes:

a first sending module 601, configured to send a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

Optionally, as shown in fig. 7, the second terminal 600 further includes:

a first receiving module 602, configured to receive a second RRC signaling sent by a network side device, where the second RRC signaling is used to indicate remapping of a QoS Flow from a source DRB to a target DRB.

The first receiving module 602 may be replaced with a second receiving module 603 as shown in fig. 8:

a second receiving module 603, configured to receive an SDAP PDU sent by a network side device, where the SDAP PDU carries a remapping indication bit, where the remapping indication bit indicates that QoS Flow is remapped from a source DRB to a target DRB.

Optionally, the first indication information includes:

Optionally, as shown in fig. 9, the second terminal 600 further includes

A determining module 604, configured to determine the target SDAP PDU according to the transceiving information of the packet data convergence protocol PDCP entity.

The second terminal provided in the embodiment of the present invention can implement each process executed by the terminal in the remapping method shown in fig. 1, and can obtain the same beneficial effects, so that repetition is avoided, and no description is repeated here.

Referring to fig. 10, a block diagram of a third terminal according to an embodiment of the present invention, as shown in fig. 10, the third terminal includes: a third transceiver 1010, a first memory 1020, a third processor 1000, and a first computer program stored on the first memory 1020 and executable on the third processor 1000.

A third transceiver 1010 for transmitting a first radio resource control, RRC, signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

Wherein a third transceiver 1010 may be used to receive and transmit data under the control of the third processor 1000.

In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, specifically represented by the third processor 1000, and various circuits of the memory, represented by the first memory 1020, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The third transceiver 1010 may be a plurality of elements, i.e. comprise a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The third processor 1000 is responsible for managing the bus architecture and general processing, and the first memory 1020 may store data used by the third processor 1000 in performing operations.

It should be noted that the first memory 1020 is not limited to the third terminal, and the first memory 1020 and the third processor 1000 may be separated and located in different geographical locations.

Optionally, the third transceiver 1010 is further configured to receive a second RRC signaling sent by the network side device, where the second RRC signaling is used to instruct remapping the QoS Flow from the source DRB to the target DRB;

Or (b)

The third transceiver 1010 is further configured to receive an SDAP PDU sent by the network side device, where the SDAP PDU carries a remapping indicator bit, where the remapping indicator bit indicates that the QoS Flow is remapped from the source DRB to the target DRB.

Optionally, the first indication information includes:

Optionally, the third processor 1000 is configured to determine the target SDAP PDU according to the transceiving information of the packet data convergence protocol PDCP entity.

It should be noted that, the third terminal in this embodiment may be a terminal of any implementation manner in the method embodiment in this embodiment, and any implementation manner of the terminal in the method embodiment in this embodiment may be implemented by the third terminal in this embodiment, so that the same beneficial effects are achieved, which is not described herein again.

Referring to fig. 11, which is a block diagram of a first network side device according to an embodiment of the present invention, as shown in fig. 11, a first network side device 1100 includes a second processor 1101 and a second transceiver 1102:

the second transceiver 1102 is configured to receive a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in the process of remapping a quality of service Flow QoS Flow from a source data radio bearer DRB to a target DRB, SDAP PDU sent by the source DRB;

the second transceiver 1102 is further configured to receive the target SDAP PDU at the source DRB.

Optionally, the second transceiver 1102 is further configured to send second RRC signaling, where the second RRC signaling is configured to instruct remapping the QoS Flow from the source DRB to the target DRB;

or (b)

The second transceiver 1102 is further configured to send an SDAP PDU, where the SDAP PDU carries a remapping indicator bit that indicates that QoS Flow is remapped from a source DRB to a target DRB.

Optionally, the first indication information includes:

Optionally, the second processor 1101 is configured to configure the first indication information to an SDAP layer entity;

the second transceiver 1102 performs the following steps in the receiving the target SDAP PDU at the source DRB:

and receiving the target SDAP PDU at the source DRB according to the first indication information through the SDAP layer entity.

The first network side device provided by the embodiment of the present invention can implement each process executed by the terminal in the remapping method shown in fig. 2, and can obtain the same beneficial effects, so that repetition is avoided, and no detailed description is given here.

Referring to fig. 12, a block diagram of a second network side device according to an embodiment of the present invention, as shown in fig. 12, a second network side device 1200 includes:

a first receiving module 1201, configured to receive a first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in the process of remapping a quality of service Flow QoS Flow from a source data radio bearer DRB to a target DRB, SDAP PDU sent by the source DRB;

A second receiving module 1202 is configured to receive the target SDAP PDU at the source DRB.

Optionally, as shown in fig. 13, the second network side device 1200 further includes:

a first sending module 1203 configured to send a second RRC signaling, where the second RRC signaling is configured to instruct remapping the QoS Flow from the source DRB to the target DRB;

the first transmitting module 1203 may be replaced with a second transmitting module 1204 as shown in fig. 14, and the second transmitting module 1204 is configured to:

a second sending module 1204, configured to send an SDAP PDU, where the SDAP PDU carries a remapping indication bit, where the remapping indication bit indicates that the QoS Flow is remapped from the source DRB to the target DRB.

Optionally, the first indication information includes:

Alternatively, as shown in fig. 15, the second network side device 1200 further includes:

a configuration module 1205 configured to configure the first indication information to an SDAP layer entity;

The second receiving module 1202 is specifically configured to:

The second network side device provided in the embodiment of the present invention can implement each process executed by the terminal in the remapping method shown in fig. 2, and can obtain the same beneficial effects, so that repetition is avoided, and no detailed description is given here.

Referring to fig. 16, a block diagram of a third network side device according to an embodiment of the present invention is shown in fig. 16, where the third network side device includes: a fourth transceiver 1610, a second memory 1620, a fourth processor 1600, and a second computer program stored on the second memory 1620 and executable on the fourth processor 1600.

A fourth transceiver 1610 configured to receive the first radio resource control RRC signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: in the process of remapping a quality of service Flow QoS Flow from a source data radio bearer DRB to a target DRB, SDAP PDU sent by the source DRB;

the fourth transceiver 1610 is further configured to receive the target SDAP PDU at the source DRB.

Wherein a fourth transceiver 1610 may be used to receive and transmit data under the control of the fourth processor 1600.

In fig. 16, the bus architecture may include any number of interconnected buses and bridges, and in particular, one or more processors, represented by the fourth processor 1600, and various circuits of the memory, represented by the second memory 1620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The fourth transceiver 1610 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The fourth processor 1600 is responsible for managing the bus architecture and general processing, and the second memory 1620 may store data used by the fourth processor 1600 in performing operations.

It should be noted that the second memory 1620 is not limited to the third network device, and the second memory 1620 and the fourth processor 1600 may be separately located in different geographic locations.

Optionally, before receiving the first RRC signaling, the fourth transceiver 1610 is further configured to:

or (b)

Optionally, the first indication information includes:

Optionally, the fourth processor 1600 is configured to configure the first indication information to an SDAP layer entity;

the receiving, at the source DRB, the target SDAP PDU by the fourth transceiver 1610 is specifically:

It should be noted that, the third network side device in this embodiment may be any network side device in any implementation manner in the method embodiment in this embodiment, and any implementation manner of the network side device in the method embodiment in this embodiment may be implemented by the third network side device in this embodiment, so that the same beneficial effects are achieved, which is not described herein again.

The embodiment of the present invention further provides a computer readable storage medium, on which a third computer program is stored, where the program when executed by the fifth processor implements the steps in the remapping method on the terminal side provided by the embodiment of the present invention, or the program when executed by the fifth processor implements the steps in the remapping method on the network side device side provided by the embodiment of the present invention.

In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the remapping method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A remapping method for a terminal, the remapping method comprising:

transmitting a first Radio Resource Control (RRC) signaling; the first RRC signaling includes first indication information, where the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP PDU is: and in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB, SDAP PDU sent by the source DRB.

2. The remapping method according to claim 1, wherein before the sending the first RRC signaling, the method further comprises:

or (b)

3. The remapping method of claim 1, wherein the first indication information comprises:

4. The remapping method of claim 1, wherein the first indication information further comprises: the identification information of the quality of service flow and the identification information of the source DRB.

5. The remapping method according to claim 1, wherein before the sending the first RRC signaling, further comprises:

6. The remapping method according to claim 1, wherein the first RRC signaling is RRC connection reconfiguration complete signaling.

7. A remapping method for a network side device, the remapping method comprising:

and receiving the target SDAP PDU at the source DRB.

8. The remapping method of claim 7, wherein prior to the receiving the first RRC signaling, the remapping method further comprises:

or (b)

9. The remapping method of claim 7, wherein the first indication information comprises:

10. The remapping method of claim 7, wherein the first indication information further comprises: the identification information of the quality of service flow and the identification information of the source DRB.

11. The remapping method of claim 7, wherein the first RRC signaling is RRC connection reconfiguration complete signaling.

12. The remapping method of claim 7, wherein after receiving the first RRC signaling, the remapping method further comprises:

configuring the first indication information to an SDAP layer entity;

the receiving the target SDAP PDU at the source DRB specifically comprises:

13. A terminal comprising a first processor and a first transceiver:

14. The terminal of claim 13, wherein the terminal comprises a base station,

the first transceiver is further configured to receive a second RRC signaling sent by the network side device, where the second RRC signaling is configured to instruct remapping the QoS Flow from the source DRB to the target DRB;

or (b)

The first transceiver is further configured to receive an SDAP PDU sent by the network side device, where the SDAP PDU carries a remapping indication bit, where the remapping indication bit indicates that the QoS Flow is remapped from the source DRB to the target DRB.

15. The terminal of claim 13, wherein the first indication information comprises:

16. The terminal of claim 13, wherein the first indication information further comprises: the identification information of the quality of service flow and the identification information of the source DRB.

17. The terminal of claim 13, wherein the terminal comprises a base station,

the first processor is configured to determine the target SDAP PDU according to the transceiving information of the packet data convergence protocol PDCP entity.

18. The terminal of claim 13, wherein the first RRC signaling is RRC connection reconfiguration complete signaling.

19. A network side device comprising a second processor and a second transceiver:

20. The network-side device of claim 19, wherein,

the second transceiver is further configured to send a second RRC signaling, the second RRC signaling being configured to instruct remapping the QoS Flow from the source DRB to the target DRB;

or (b)

The second transceiver is further configured to send an SDAP PDU, where the SDAP PDU carries a remapping indication bit that indicates that the QoS Flow is remapped from the source DRB to the target DRB.

21. The network-side device of claim 19, wherein the first indication information comprises:

22. The network-side device of claim 19, wherein the first indication information further comprises: the identification information of the quality of service flow and the identification information of the source DRB.

23. The network side device of claim 19, wherein the first RRC signaling is RRC connection reconfiguration complete signaling.

24. The network-side device of claim 19, wherein,

the second processor is configured to configure the first indication information to an SDAP layer entity;

the second transceiver receives the target SDAP PDU at the source DRB specifically:

25. A terminal, comprising: a first memory, a third processor and a first computer program stored on the first memory and executable on the third processor, which when executed by the third processor, implements the steps of the remapping method according to any one of claims 1 to 6.

26. A network side device, comprising: a second memory, a fourth processor and a second computer program stored on the second memory and executable on the fourth processor, which when executed by the fourth processor, implements the steps of the remapping method according to any one of claims 7 to 12.

27. A computer readable storage medium, characterized in that it has stored thereon a third computer program which, when executed by a fifth processor, implements the steps of the remapping method according to any of claims 1 to 6; or steps implementing a remapping method as claimed in any one of claims 7 to 12.