CN111510263A - Remapping method, terminal and network side equipment - Google Patents

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, sending the SDAP PDU through the source DRB. The embodiment of the invention can improve the reliability of the remapping process.

Description

A remapping method, terminal and network side device

technical field

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

Background technique

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

In the related art, in order to ensure that the wireless data bearer (DataRadio Bearer, DRB) of the transmission data packet is switched from the source DRB to the target DRB during the remapping process, in the service data adaptation protocol data unit (Service Discovery Application Profile Protocol Data Unit, SDAP) The data end mark (Endmark) is added to the PDU), so that the receiving end can determine that all the data transmitted on the source DRB has been sent according to the data end mark, so that it can switch to the target DRB and continue to receive data to avoid data omission transmission or repeated transmission.

However, SDAP PDUs are prone to packet loss, so that the data end identifier cannot be accurately transmitted to the receiving end, which further makes the receiving end unable to determine whether the remapping is successful, resulting in poor reliability of the remapping process.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a remapping method, a terminal, and a network side device, so as to solve the problem of poor reliability of the remapping process.

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

Send first radio resource control (Radio Resource Control, RRC) signaling; the first RRC signaling includes first indication information, the first indication information is used to indicate the target service data adaptation protocol data unit SDAPPDU, the The target SDAP PDU is an SDAP PDU sent by the source DRB in the process of remapping the quality of service flow (Quality of Service Flow, QoS Flow) from the source data radio bearer DRB to the target DRB.

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

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

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

The second transceiver is also 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: a first memory, a third processor, and a first computer program stored on the first memory and executable on the third processor, When the first computer program is executed by the third processor, the steps of the terminal-side remapping method provided by the embodiment of the present invention are implemented.

In a sixth aspect, an embodiment of the present invention further provides a network-side device, including: a second memory, a fourth processor, and a second computer stored on the second memory and running on the fourth processor A program, when the second computer program is executed by the fourth processor, implements the steps of the remapping method on the network side device side provided by the embodiment of the present invention.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a third computer program is stored on the computer-readable storage medium, and when the third computer program is executed by the fifth processor, implements the present invention The steps of the remapping method on the terminal side provided by the example; or the steps of implementing the remapping method on the network side device side provided by the embodiment of the present invention.

In this embodiment of the present invention, the first radio resource control RRC signaling is sent; the first RRC signaling includes first indication information, and the first indication information is used to indicate the target service data adaptation protocol data unit SDAP PDU, so The target SDAP PDU is an SDAP PDU sent by the source DRB in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB. In this way, the first indication information for indicating the target SDAP PDU can be sent through RRC signaling with high transmission reliability, so that when the receiving end receives the RRC signaling, it determines the process of remapping according to the first indication information. The SDAP PDU sent by the source DRB is continued, thereby improving the reliability of signal transmission in the remapping process, thereby improving the reliability of the remapping process.

Description of drawings

1 is a flowchart of a remapping method provided by an embodiment of the present invention;

2 is one of the schematic diagrams of SDAP remapping process in a remapping method provided by an embodiment of the present invention;

3 is a second schematic diagram of an SDAP remapping process in a remapping method provided by an embodiment of the present invention;

4 is a flowchart of another remapping method provided by an embodiment of the present invention;

5 is a structural diagram of a first terminal provided by an embodiment of the present invention;

6 is one of the structural diagrams of a second terminal provided by an embodiment of the present invention;

FIG. 7 is the second structural diagram of a second terminal provided by an embodiment of the present invention;

FIG. 8 is a third structural diagram of a second terminal provided by an embodiment of the present invention;

FIG. 9 is a fourth structural diagram of a second terminal provided by an embodiment of the present invention;

10 is a structural diagram of a third terminal provided by an embodiment of the present invention;

11 is a structural diagram of a first network-side device provided by an embodiment of the present invention;

12 is one of the structural diagrams of a second network side device provided by an embodiment of the present invention;

FIG. 13 is the second structural diagram of the second type of network side device provided by an embodiment of the present invention;

14 is a third structural diagram of a second network side device provided by an embodiment of the present invention;

FIG. 15 is a fourth structural diagram of a second network side device provided by an embodiment of the present invention;

FIG. 16 is a structural diagram of a third network-side device provided by an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the present invention can be applied to a communication system. 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 present invention can accurately inform the terminal and the network side device to start remapping, and determine the target SDAP PDU transmitted on the source DRB, thereby improving the reliability of the remapping process and avoiding SDAP PDUs that complete transmission are confused with SDAP PDUs of subsequent transmissions.

The terminal may be a user terminal (User Equipment, UE) or other terminal equipment, such as a mobile phone, a tablet computer (Tablet PersonalComputer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), mobile Internet access Device (Mobile Internet Device, MID) or wearable device (Wearable Device) and other terminal-side devices. The network side equipment may be a base station, such as a macro station, LTE eNB, 5G NR NB, etc.; the network side equipment may also be a small station, such as a low power node (Low Power Node, LPN), pico, femto and other small stations, Alternatively, the network side device may be an access point (Access Point, AP); the base station may also be a network node composed of a central unit (Central Unit, CU) and multiple transmission reception points (Transmission Reception Point, TRP) managed and controlled by it. It should be noted that specific types of terminals and network side devices are not limited in the embodiments of the present invention.

Please refer to FIG. 1. FIG. 1 is a flowchart of a remapping method provided by an embodiment of the present invention. The remapping method is applied to a terminal. As shown in FIG. 1, the method includes the following steps:

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

The above-mentioned source DRB may be referred to as "original DRB", which refers to the DRB used to transmit SDAP PDUs before remapping is performed. The above-mentioned target DRB is a DRB used for transmitting SDAP PDU after remapping.

In addition, when the QoS flow of SDAP and the DRB are remapped (Remapping), by carrying the indication information of the SDAP PDU to continue to be sent through the source DRB in the RRC signaling with high transmission reliability, it can be ensured that the indication information is reliable. It is transmitted to the peer device, so that the peer device can receive the SDAP PDU sent through the source DRB according to the indication information, so as to realize the correct reception of the SDAP PDU.

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

receiving the second RRC signaling sent by the network side device, where the second RRC signaling is used to instruct to remap the QoS Flow from the source DRB to the target DRB;

or

Receive an SDAP PDU sent by a network-side device, where the SDAP PDU carries a remapping indication bit, and the remapping indication bit indicates to remap the QoS Flow from the source DRB to the target DRB.

The above steps are used to inform the terminal to start remapping, and the terminal determines that remapping is required and then executes step 101, that is, counts the number of target SDAP PDUs to be sent through the source DRB and feeds it back to the network side device.

Wherein, when the network side device sends the second RRC signaling to inform the terminal to remap the QoS Flow from the source DRB to the target DRB, the second RRC signaling may carry the mapping relationship between the source DRB and the QoS Flow . Therefore, after the terminal receives the second RRC signaling, the terminal can remap from the source DRB to the target DRB according to the mapping relationship QoS Flow carried by the terminal.

For example, SDAP remapping is directly configured by RRC Connection Reconfiguration signaling, and RRC Connection Reconfiguration Complete signaling is used as corresponding feedback signaling to determine enabling SDAP remapping. 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, in addition to 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 the reset RRC signaling. order, the second RRC signaling is not limited here, and the first RRC signaling is correspondingly not limited.

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

In addition, for receiving the remapping indication bit carried in the SDAP PDU sent by the network side device to instruct the terminal to remap the QoS Flow from the source DRB to the target DRB, the remapping indication bit may be in the SDAP PDU. The newly added preset indicator bit, for example: add a character to the header of the SDAP PDU, when the character is equal to 1, it means remapping is performed, and when the character is equal to 0, it means that remapping is not performed, so that it continues on the source DRB Transmit SDAP PDUs. It should be noted that, in the embodiment of the present invention, the specific form of the remapping indication bit is not limited.

Certainly, the remapping 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. That is, after the SDAP received by the terminal is sent to the SDAP PDU carrying RDI or RQI sent by the network side device, remapping can be determined, and then RRC signaling is triggered to send the first RRC signaling for reply. In this way, the RDI and RQI carried in the existing SDAP PDU can be used to inform the terminal to start remapping.

Of course, the remapping indication bits may also include other indication bits, for example: indication bits of the source DRB, indication bits of the target DRB, and the like.

As an optional implementation manner, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

The identifier of the at least one SDAP PDU may be the identifier information of any SDAP PDU, such as the identifier information corresponding to the SDAP PDU sent first or the identifier information corresponding to the last SDAP PDU sent in the target SDAP PDU.

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

Of course, in the specific embodiment of the present invention, the first indication information may also include only the number of target SDAP PDUs, and the network side may consider that the target SDAP PDUs have been received after the source DRB continues to receive the corresponding number of SDAP PDUs.

Preferably, the SDAP PDU identification indicated by the identification indication information may be the unique identification information PDU_ID of the SDAP PDU sent first in the target SDAP PDU.

The PDU_ID may be the SN number assigned by the Packet Data Convergence Protocol (PDCP) protocol sublayer to the PDCP PDU corresponding to the SDAP PDU, or the PDCP protocol sublayer corresponding to the SN number through the superframe number (Hyper Frame Number, HFN) and SN number calculated count value (COUNTER value).

It should be noted that the PDU_ID may also include the identification information of the quality of service flow to which the corresponding SDAP PDU belongs, such as: QoS Flow ID (QFI), identification information of the source DRB, such as: DRB ID and identification information of the target DRB , for example: DRB ID, etc.

In this embodiment, after the terminal is notified to perform remapping, it determines the number of the target SDAP PDUs and starts to send the first data packet in the target SDAP PDU. When the data packets indicated by the information are counted, the received data packets are counted, and after the data packets reaching the number indicated by the quantity indication information are counted, it can be confirmed that all the data packets transmitted on the source DRB have been received.

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

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

The target SDAP PDU is determined according to the sending and receiving information of the PDCP entity of the Packet Data Convergence Protocol.

The target SDAP PDU may be an SDAP SDU that has been sent 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 on the terminal side organizes the SDAP SDUs sent on the source DRB, so as to send the SDAP PDUs that have not been sent to the PDCP entity to the PDCP through the target DRB entity, and send the SDAP PDUs that have been sent to the PDCP entity through the source DRB and the SDAP SDUs that need to be 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 passed through the source DRB. The SDAP PDU sent by the DRB to the PDCP entity and the SDAP SDU that need to be sent on the source DRB.

In addition, for the SDAP SDU not sent to the PDCP entity, the source DRB may be switched to the target DRB and then sent through the target DRB. After the DRB is switched, the SDAPSDU is sent through the target DRB immediately, causing the problem of confusing the transmission of the SDAP SDU before and after the switch.

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

Wherein, a new field may be added to the RRC connection reconfiguration completion signaling, so as to indicate the number of SDAP SDUs that are continuously transmitted through the source DRB during the process from the start of remapping to the end of remapping through the newly added field. Of course, the RRC connection reconfiguration completion signaling also includes the PDU_ID in the above embodiment and the total number of data packets sent in total.

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

Wherein, the RRC connection reconfiguration completion signaling includes PDU_ID, PDU_Number (ie, the number of the target SDAP PDU), QFI, and DRB ID. The PDU_ID may be the SN number assigned by the PDCP protocol sublayer to the PDCP PDU corresponding to the SDAP PDU, or the COUNTER value calculated by the PDCP protocol sublayer corresponding to the SN number through the HFN and the SN number.

In this embodiment of the present invention, the first radio resource control RRC signaling is sent; the first RRC signaling includes first indication information, and the first indication information is used to indicate the target service data adaptation protocol data unit SDAP PDU, so The target SDAP PDU is an SDAP PDU sent by the source DRB in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB. In this way, the first indication information for indicating the target SDAP PDU can be sent through RRC signaling with high transmission reliability, so that when the receiving end receives the RRC signaling, it determines the process of remapping according to the first indication information. The SDAP PDU sent by the source DRB is continued, thereby improving the reliability of signal transmission in the remapping process, thereby improving the reliability of the remapping process.

Please refer to FIG. 2 , which is a flowchart of another remapping method provided by the implementation of the present invention. The method is applied to a network side device. As shown in FIG. 2 , the method includes the following steps:

Step 201: Receive first radio resource control RRC signaling; the first RRC signaling includes first indication information, and the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, and the target SDAP The PDU is an SDAP PDU sent by the source DRB in the process of remapping the QoS Flow from the source data radio bearer DRB to the target DRB.

Step 202: Receive the target SDAP PDU at the source DRB.

Wherein, after receiving the target SDAP PDU on the source DRB, the network side device switches to the target DRB to continue to receive the SDAP PDU of the QoS Flow.

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

sending second RRC signaling, where the second RRC signaling is used to instruct to remap the QoS Flow from the source DRB to the target DRB;

or

Send an SDAP PDU, where the SDAP PDU carries a remapping indication bit, and the remapping indication bit indicates to remap the QoS Flow from the source DRB to the target DRB.

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

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

configuring the first indication information to the SDAP layer entity;

The receiving of the target SDAP PDU at the source DRB is specifically:

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

The SDAP layer entity on the network side (also referred to as the SDAP protocol sublayer on the network side), after receiving the configuration of the first RRC signaling, retains the information of the SDAP PDU, and starts to compare the information received on the source DRB and the target DRB. The SDAP PDUs are properly sequenced so that the received SDAP PDUs are presented to higher layers in the normal order.

The embodiments of the present invention take the network side device as the execution subject, and the steps executed by the terminal correspond to the steps executed by the terminal in the method embodiment shown in FIG. 1 , and can achieve the same beneficial effects.

An example analysis of the remapping method is given below with reference to 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 exchange through RRC signaling to perform SDAP remapping. As shown in Figure 3, the SDAP remapping process includes the following processes:

Step 1. The SDAP protocol sublayer on the network side decides to remap (remapping) the QoS Flow sent from the terminal side to the network side to the new DRB, then the indication information of the source DRB, the source QoS flow, the target DRB and the target QoS Flow is It is sent to the RRC entity on the network side through RRC signaling.

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

Step 2. After receiving the SDAP remapping request information, the RRC entity on the network side sends the RRC connection reconfiguration signaling to the terminal RRC entity according to the relationship between the source DRB and the source QoS Flow, and the relationship between the target QoS Flow and the target DRB, and the RRC connection reconfiguration signaling carries The mapping relationship between the target QoS Flow and the target DRB.

The RRC connection reconfiguration signaling is the second RRC signaling in the previous embodiment, and the mapping relationship between the target QoSFlow 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.

Step 3: After receiving the RRC connection reconfiguration signaling, the RRC entity on the terminal side parses out the SDAP remapping configuration information, and configures it to the SDAP entity on the terminal side.

Wherein, after receiving the configuration information, the SDAP entity starts to perform remapping according to the mapping relationship carried in the configuration information.

Step 4: After receiving the SDAP remapping configuration information, the SDAP entity on the terminal side arranges the SDAP service data unit (Service Data Unit, SDU) sent on the source DRB, and puts the SDAP PDU not sent to the PDCP on the target DRB for processing. Send, and send the SDAP PDU that has been sent to the PDCP on the source DRB and the target SDAP SDU that needs to be sent on the source DRB continue to be sent through the source DRB, and send the data packet information request information (ie SDAP) to the PDCP entity of the source DRB. PDU ID request information).

In this embodiment, according to the sending and receiving information of the PDCP entity, it can be determined that the target SDAP PDU includes the SDAP PDU that has been sent to the PDCP and the target SDAP SDU that needs to be sent on the source DRB, and requests to send the target SDAP PDU on the source DRB. Target SDAP PDU to request that the target SDAP PDU be sent on the source DRB.

Step 5. The source PDCP entity on the terminal side receives the above-mentioned SDAP PDU ID request information, according to the target SDAP PDU sent on the source DRB provided by the SDAP request information, combined with the SDAP PDU corresponding to the QoS Flow that the source PDCP has stored locally. Information such as the number of PDCP PDUs, the initial SN number or COUNTER value, and the SN number or COUNTER value that can be sent are fed back to the terminal-side SDAP entity (ie, SDAP PDU ID request information feedback information).

The SDAP request information is the request information that the SDAP on the terminal side sends the data packet information to the PDCP of the source DRB in step 4, and the terminal determines the PDU_ID information of the target SDAP PDU according to the request information. In this embodiment, the PDU_ID information Can be an SN number or a COUNTER value.

In addition, the initial SN or COUNTER value may be used as the identity information of the SDAP PDU transmitted first in the target SDAP PDU. Combining the number of the target SDAP PDUs, it can be determined in time whether all the target SDAP PDUs have been transmitted, so that the target DRB can be switched to the target DRB for new transmission in time after all the target SDAP PDUs have been transmitted.

Step 6: After receiving the SDAP PDU ID request information feedback information, the terminal SDAP entity determines to send the target SDAP PDU on the source DRB according to the feedback information, and reports it to the terminal RRC entity through RRC signaling.

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

Step 7: After receiving the SDAP PDU ID request information feedback information, the terminal RRC entity sends the RRC connection reconfiguration complete signaling to the RRC entity on the network side, which carries the indication information of the target SDAP PDU in the remapping process.

The indication information includes quantity indication information, identification indication information, and the like.

In this step, the RRC connection reconfiguration completion signaling can be used to inform the network side device that the terminal has received the remap configuration, so that the peer device can receive the SDAP PDU sent through the source DRB according to the instruction information, so as to realize the correct reception of the SDAP PDU.

Step 8: After receiving the reply from the terminal side, the RRC entity on the network side configures the SDAP PDU information therein to the SDAP entity on the network side.

Wherein, that the RRC entity on the network side receives the reply from the terminal side means that the network side receives the RRC connection reconfiguration completion signaling that carries the indication information of the target SDAP PDU. After the indication information of the target SDAP PDU is configured to the SDAP entity, it is convenient for the data receiving end to correctly sequence the SDAP PDUs received on the source DRB and the target DRB, and then submit them to the upper layer according to the normal order.

The embodiments of the present invention can implement each process of the remapping method shown in FIG. 1 and FIG. 2 , and achieve the same beneficial effects, which are not described here to avoid repetition.

Example 2

Referring to FIG. 4 , in this embodiment, the information exchange between the network-side device and the terminal includes SDAP PDU and RRC signaling to perform SDAP remapping. As shown in Figure 4, the SDAP remapping process includes the following processes:

Step 1. The SDAP protocol sublayer on the network side decides to remap (remapping) the QoS Flow sent from the terminal side to the network side to the new DRB, then the SDAP PDU carries the RQI or RDI mapping method and sends it to the terminal side. SDAP.

In this step, the SDAP remapping process is triggered by carrying the RQI or RDI in the SDAP PDU as the remapping indication information, and the SDAP on the terminal side is informed to perform the remapping.

Step 2: After receiving the SDAP PDU carrying RQI or RDI sent by the SDAP on the network side, the SDAP on the terminal side arranges the SDAP service data unit (Service Data Unit, SDU) sent on the source DRB, and removes the SDAP PDU not sent to the PDCP. Send on the target DRB, and send the SDAP PDU that has been sent to the PDCP and the target SDAP SDU that still needs to be sent on the source DRB on the source DRB, and send the data packet information request message to the PDCP of the source DRB.

Wherein, after receiving the SDAP PDU carrying RQI or RDI, the SDAP on the terminal side determines that SDAP remapping needs to be performed, so as to organize and analyze the received and sent data on the PDCP to determine the target SDAP that needs to be sent on the source DRB. PDUs.

Step 3. The source PDCP on the terminal side receives the request information from SDAP, and according to the target SDAP PDU provided by SDAP and sent on the source DRB, the source PDCP combines the number of PDCP PDUs corresponding to the SDAP PDUs of the locally stored QoS Flow to start the process. The initial SN or COUNTER value, the SN number or COUNTER that can be sent, and other information are fed back to SDAP.

Step 4: After receiving the response information sent by the PDCP of the terminal, the terminal SDAP sends the target SDAP PDU on the source DRB according to the response information, and reports it to the terminal RRC through RRC signaling.

Step 5: After receiving the SDAP response information, the terminal RRC sends an RRC connection reconfiguration complete signaling to the RRC on the network side, which carries the indication information of the target SDAP PDU in the remapping process.

Step 6: After receiving the reply from the terminal side, the RRC on the network side configures the SDAP PDU information therein to SDAP.

After the SDAP on the network side receives the configuration of the RRC signaling on the network side, it retains the indication information of the target SDAP PDU, and starts to correctly sort the SDAP PDUs received on the source DRB and the target DRB, and then submit them in the normal order. to the top.

This embodiment is similar to the method steps in Embodiment 1. The difference is that in Embodiment 1, the RRC connection reconfiguration signaling sent by the network side device to the terminal is used to trigger SDAP remapping. The SDAP PDU sent to the terminal carries a remapping indication bit to trigger SDAP remapping. It can implement each process in the method embodiment shown in FIG. 1 and FIG. 2 , and can achieve the same beneficial effect, which is not repeated here in order to avoid repetition.

Please refer to FIG. 5 , which is a structural diagram of a first terminal provided by 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 first radio resource control RRC signaling; the first RRC signaling includes first indication information, and the first indication information is used to indicate a target service data adaptation protocol data unit SDAP PDU, the target SDAP PDU is: the SDAP PDU sent by the source DRB in the process of remapping the quality of service flow QoS Flow from the source data radio bearer DRB to the target DRB.

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 second RRC signaling sent by the network side device, where the second RRC signaling is used to instruct to remap the QoS Flow from the source DRB to the target DRB;

or

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

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

Optionally, the first processor 501 is configured to determine the target SDAP PDU according to the sending and receiving information of the PDCP entity of the Packet Data Convergence Protocol.

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

The first terminal provided by the embodiment of the present invention can implement each process performed by the terminal in the remapping method as shown in FIG. 1 , and can achieve the same beneficial effects. To avoid repetition, details are not described here.

Please refer to FIG. 6 , which is a structural diagram of a second type of terminal provided by an embodiment of the present invention. As shown in FIG. 6 , the second type of terminal 600 includes:

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

Optionally, as shown in FIG. 7 , the second type of terminal 600 further includes:

The first receiving module 602 is configured to receive the second RRC signaling sent by the network side device, where the second RRC signaling is used to instruct to remap the QoS Flow from the source DRB to the target DRB.

The first receiving module 602 can be replaced by the second receiving module 603 as shown in FIG. 8 :

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

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

Optionally, as shown in FIG. 9 , the second type of terminal 600 further includes

The determining module 604 is configured to determine the target SDAP PDU according to the sending and receiving information of the PDCP entity of the Packet Data Convergence Protocol.

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

The second type of terminal provided by the embodiment of the present invention can implement each process performed by the terminal in the remapping method as shown in FIG. 1 , and can achieve the same beneficial effects. To avoid repetition, details are not repeated here.

Please refer to FIG. 10 , which is a structural diagram of a third type of terminal provided by an embodiment of the present invention. As shown in FIG. 10 , the third type of terminal includes: a third transceiver 1010 , a first memory 1020 , a third processor 1000 and a storage A first computer program on the first memory 1020 and executable on the third processor 1000 .

The third transceiver 1001 is configured to send 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 , the target SDAP PDU is: the SDAP PDU sent by the source DRB in the process of remapping the quality of service flow QoS Flow from the source data radio bearer DRB to the target DRB.

The 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, in particular one or more processors 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 peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. The third transceiver 1010 may be multiple elements, ie, including a transmitter and a receiver, providing a means for communicating with various other devices 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 when performing operations.

It should be noted that, the first memory 1020 is not limited to only on 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 the second RRC signaling sent by the network side device, where the second RRC signaling is used to instruct the QoS Flow to be remapped from the source DRB to the target DRB;

or

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

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

Optionally, the third processor 1000 is configured to determine the target SDAP PDU according to the sending and receiving information of the PDCP entity of the Packet Data Convergence Protocol.

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

It should be noted that, in this embodiment, the above-mentioned third terminal may be a terminal of any implementation mode in the method embodiment in the embodiment of the present invention, and any implementation mode of the terminal in the method embodiment in the embodiment of the present invention may be used in this embodiment. It is realized by the third terminal in the above, and achieves the same beneficial effects, which will not be repeated here.

Please refer to FIG. 11 , which is a structural diagram of a first network-side device provided by an embodiment of the present invention. As shown in FIG. 11 , the first network-side device 1100 includes a second processor 1101 and a second transceiver 1102 :

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

or

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

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

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

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

The receiving of the target SDAP PDU at the source DRB performed by the second transceiver 1102 is specifically:

The target SDAP PDU is received at the source DRB by the SDAP layer entity according to the first indication information.

The first network side device provided by the embodiment of the present invention can implement each process performed by the terminal in the remapping method as shown in FIG. 2 , and can achieve the same beneficial effect, which is not repeated here to avoid repetition.

Please refer to FIG. 12 , which is a structural diagram of a second type of network side device provided by an embodiment of the present invention. As shown in FIG. 12 , the second type of network side device 1200 includes:

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

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

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

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

The first sending module 1203 can be replaced with the second sending module 1204 as shown in FIG. 14 , and the second sending module 1204 is used for:

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

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

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

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

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

The second receiving module 1202 is specifically used for:

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

The second type of network side device provided by the embodiment of the present invention can implement each process performed by the terminal in the remapping method as shown in FIG. 2 , and can achieve the same beneficial effects. To avoid repetition, details are not described here.

Please refer to FIG. 16 , which is a structural diagram of a third network-side device provided by an embodiment of the present invention. As shown in FIG. 16 , the third type of network-side device includes: a fourth transceiver 1610 , a second memory 1620 , a fourth processing The processor 1600 and a second computer program stored on the second memory 1620 and executable on the fourth processor 1600.

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

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

The 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, in particular one or more processors represented by fourth processor 1600 and various circuits of memory represented by second memory 1620 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. The fourth transceiver 1610 may be multiple elements, ie, including a transmitter and a receiver, providing a means for communicating with various other devices 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 when performing operations.

It should be noted that, the second memory 1620 is not limited to only on the third network side device, and the second memory 1620 and the fourth processor 1600 may be separated and located in different geographical locations.

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

sending second RRC signaling, where the second RRC signaling is used to instruct to remap the QoS Flow from the source DRB to the target DRB;

or

Send an SDAP PDU, where the SDAP PDU carries a remapping indication bit, and the remapping indication bit indicates to remap the QoS Flow from the source DRB to the target DRB.

Optionally, the first indication information includes:

Quantity indication information, used to indicate the quantity of target SDAP PDUs;

The identification indication information is used to indicate the identification of at least one SDAP PDU in the target SDAP PDU.

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

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

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

The receiving of the target SDAP PDU at the source DRB performed by the fourth transceiver 1610 is specifically:

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

It should be noted that the third network-side device in this embodiment may be a network-side device in any implementation manner in the method embodiment in the embodiment of the present invention, or any implementation in the network-side device in the method embodiment in the embodiment of the present invention. All of them can be implemented by the above-mentioned third network-side device in this embodiment, and achieve the same beneficial effects, which will not be repeated here.

Embodiments of the present invention further provide a computer-readable storage medium on which a third computer program is stored, characterized in that, when the program is executed by a fifth processor, the terminal-side remapping method provided by the embodiments of the present invention is implemented. steps, or when the program is executed by the fifth processor, the steps in the network-side device-side remapping method provided by the embodiment of the present invention are implemented.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute part of the steps of the remapping method described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (27)

1. A remapping method for a terminal, said 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, sending the SDAP PDU through the source DRB.

2. The remapping method of claim 1, wherein prior to said sending the first RRC signaling, said method further comprises:

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

or

Receiving an SDAP PDU sent by a network side device, wherein the SDAP PDU carries a remapping indicator bit which indicates that QoS Flow is remapped from a source DRB to a target DRB.

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

quantity indicating information for indicating the quantity of the target SDAP PDUs;

identification indication information for indicating an identification of at least one of the target SDAP PDUs.

4. The remapping method of claim 1, wherein said 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 of claim 1, wherein said sending said first RRC signaling is preceded by:

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

6. The remapping method of claim 1, wherein said first RRC signaling is RRC connection reconfiguration complete signaling.

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

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 QoS Flow from a source Data Radio Bearer (DRB) to a target DRB, sending an SDAP PDU through the source DRB;

receiving the target SDAP PDU at the source DRB.

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

sending a second RRC signaling, wherein the second RRC signaling is used for indicating the remapping of the QoS Flow from the source DRB to the target DRB;

or

And sending an SDAP PDU, wherein the SDAP PDU carries a remapping indication bit, and the remapping indication bit indicates that QoSFlow is remapped from a source DRB to a target DRB.

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

quantity indicating information for indicating the quantity of the target SDAP PDUs;

identification indication information for indicating an identification of at least one of the target SDAP PDUs.

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

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

configuring the first indication information to an SDAP layer entity;

the receiving, at the source DRB, the target SDAP PDU specifically is:

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

13. A terminal, comprising 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, sending the SDAP PDU through the source DRB.

14. The terminal of claim 13,

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

or

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

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

quantity indicating information for indicating the quantity of the target SDAP PDUs;

identification indication information for indicating an identification of at least one of the target SDAP PDUs.

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,

the first processor is configured to determine the target SDAPPDU according to information transmitted and received by a 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:

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 QoS Flow from a source Data Radio Bearer (DRB) to a target DRB, sending an SDAP PDU through the source DRB;

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

20. The network-side device of claim 19,

the second transceiver is further configured to send second RRC signaling indicating remapping of the QoS Flow from the source DRB to the target DRB;

or

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

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

quantity indicating information for indicating the quantity of the target SDAP PDUs;

identification indication information for indicating an identification of at least one of the target SDAP PDUs.

22. The network-side device of claim 19, wherein the first indication information further includes: 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,

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

the receiving, by the second transceiver, the target SDAP PDU at the source DRB specifically includes:

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

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, the first computer program, when executed by the third processor, implementing the steps of the remapping method of any of the claims 1-6.

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

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

Images