CN110972192A - Information transmission method, device, related equipment and storage medium - Google Patents

Information transmission method, device, related equipment and storage medium Download PDF

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Publication number
CN110972192A
CN110972192A CN201811142394.9A CN201811142394A CN110972192A CN 110972192 A CN110972192 A CN 110972192A CN 201811142394 A CN201811142394 A CN 201811142394A CN 110972192 A CN110972192 A CN 110972192A
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identifier
qos flow
terminal
sdap
drb
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CN110972192B (en
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孙军帅
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Abstract

The invention discloses an information transmission method, an information transmission device, access network equipment, a terminal and a storage medium. The method comprises the following steps: at a Service Data Adaptation Protocol (SDAP) layer of an access network device, the access network device determining a first identity of a first quality of service flow (QoS flow); the first identifier is a QoS Flow Identifier (QFI) of the first QoS Flow carried in a data packet sent by a core network; determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow configured for a terminal and a Data Radio Bearer (DRB); the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; generating an SDAP Protocol Data Unit (PDU); the generated SDAP PDU carries the second identifier; and sending out the generated SDAP PDU.

Description

Information transmission method, device, related equipment and storage medium
Technical Field
The present invention relates to the field of wireless communications, and in particular, to an information transmission method, an information transmission apparatus, a related device, and a storage medium.
Background
Currently, the Service Data Attachment Protocol (SDAP), which is a 37.24 Protocol for the five-generation mobile communication technology (5G) in the third generation partnership project (3GPP), specifies the mapping requirements and configuration requirements for quality of Service (QoS) flows (flow) and Data Radio Bearers (DRBs).
However, in the related art, for the configuration of the mapping relationship between the QoS Flow identifier (QFI, QoS Flow ID) and the DRB Identifier (ID), one implementation is to directly map the QoS Flow ID carried by the core network to the DRB, that is, the QFI written in the SDAP Protocol Data Unit (PDU) header is the QFI carried in the data packet sent by the core network, and this configuration may cause the QFI carried in each DRB to be too long, resulting in too large overhead of the SDAP PDU.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide an information transmission method, an information transmission apparatus, a related device, and a storage medium.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides an information transmission method, which is applied to access network equipment and comprises the following steps:
determining a first identifier of a first QoS flow at an SDAP layer of the access network equipment; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network;
determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
generating an SDAP protocol data unit PDU; the generated SDAP PDU carries the second identifier;
and sending out the generated SDAP PDU.
In the above scheme, the method further comprises:
configuring the mapping relation to a terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
In the foregoing solution, the configuring the mapping relationship to the terminal includes:
configuring the mapping relationship to the terminal through Radio Resource Control (RRC) signaling.
In the foregoing solution, when the mapping relationship is configured to the terminal through RRC signaling, the method further includes:
and setting the second identifier at an element IE (Internet element) of the newly added information in RRC signaling.
In the above scheme, the new IE is the location of the SDAP configuration IE in the RRC signaling.
In the above scheme, when generating an SDAP PDU, the method includes:
and setting the second identification in the SDAP PDU head.
The embodiment of the invention also provides an information transmission method which is applied to a terminal and comprises the following steps:
receiving, at an SDAP layer of the terminal, an SDAP PDU;
analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
determining a first identifier corresponding to the second identifier by using a mapping relation between QoS flow and DRB configured for the first identifier; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
In the above scheme, the method further comprises:
and receiving the mapping relation configured by the access network equipment.
In the foregoing solution, the receiving the mapping relationship configured by the access network device includes:
receiving RRC signaling sent by the access network equipment;
and analyzing the received RRC signaling to obtain the mapping relation.
In the above scheme, when analyzing the received RRC signaling, the mapping relationship is obtained at the new IE of the RRC signaling.
In the above scheme, the new IE is the location of the SDAP configuration IE in the RRC signaling.
In the above solution, when the received SDAP PDU is parsed, the second identifier is obtained at a header of the SDAP PDU.
An embodiment of the present invention further provides an information transmission apparatus, including:
a first determining unit, configured to determine, at an SDAP layer of an access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network;
a second determining unit, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a second identifier corresponding to the first identifier; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a generating unit, configured to generate an SDAP unit PDU; the generated SDAP PDU carries the second identifier;
and the sending unit is used for sending the generated SDAP PDU.
In the above scheme, the apparatus further comprises:
the configuration unit is used for configuring the mapping relation to the terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
In the foregoing solution, the configuration unit is specifically configured to:
and configuring the mapping relation to the terminal through RRC signaling.
An embodiment of the present invention further provides an information transmission apparatus, including:
a receiving unit, configured to receive, at an SDAP layer of a terminal, an SDAP PDU;
the analysis unit is used for analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a third determining unit, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a first identifier corresponding to the second identifier; the first identifier is QFI of the first QoSflow carried in a data packet sent by a core network.
In the foregoing solution, the receiving unit is further configured to receive the mapping relationship configured by the access network device.
In the foregoing scheme, the receiving unit is configured to: receiving RRC signaling sent by the access network equipment;
the analysis unit is further configured to analyze the received RRC signaling to obtain the mapping relationship.
An embodiment of the present invention further provides an access network device, including:
a first processor, configured to determine, at an SDAP layer of an access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; determining a second identifier corresponding to the first identifier by using a mapping relation between QoSflow and DRB configured for the terminal; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; and generating an SDAP unit PDU; the generated SDAPPDU carries the second identifier;
a first communication interface for issuing the generated SDAP PDU.
In the foregoing solution, the first communication interface is further configured to configure the mapping relationship to a terminal under the control of the first processor; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
In the foregoing solution, the first communication interface is configured to configure the mapping relationship to the terminal through an RRC signaling.
An embodiment of the present invention further provides a terminal, including:
a second communication interface for receiving the SDAP PDU at the SDAP layer of the terminal;
the second processor is used for analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; determining a first identifier corresponding to the second identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
In the foregoing solution, the second communication interface is further configured to receive the mapping relationship configured by the access network device.
In the foregoing solution, the second communication interface is configured to receive an RRC signaling sent by the access network device;
the second processor is further configured to analyze the received RRC signaling to obtain the mapping relationship.
An embodiment of the present invention further provides an access network device, including: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is configured to execute the steps of the method at any one of the access network device sides when the computer program is executed.
An embodiment of the present invention further provides a terminal, including: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is configured to execute the steps of the method of any one of the above terminal sides when running the computer program.
An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method described in any one of the access network device sides, or implements the steps of the method described in any one of the terminal sides.
In the information transmission method, the information transmission device, the related equipment and the storage medium provided by the embodiment of the invention, the access network equipment determines a first identifier of a first QoS flow at an SDAP layer of the access network equipment; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; the access network equipment determines a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; and generating an SDAP PDU; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; the generated SDAP PDU carries the second identifier; the access network equipment sends the generated SDAP PDU; for the terminal, receiving SDAPPDU at the SDAP layer of the terminal; analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; and determining a first identifier corresponding to the second identifier by using a mapping relation between QoSFlow and a DRB configured for the terminal, and determining a second identifier representing an index of the QoS flow mapped to the corresponding DRB in the corresponding DRB by using the mapping relation between QoSFlow and the DRB configured for the terminal, namely the mapping relation between QFI (quad flat package interface) and second-level QFI (quad flat package interface) allocated for the QoS flow by a core network, and the second identifier, namely the second-level QFI, carried by the SDAP PDU, so that the overhead of the SDAP PDU can be greatly reduced, and the length of the QFI carried by the DRB is also greatly reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for transmitting information at an access network device side according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a radio bearer configuration according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating an SDAP configuration according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating an SDAP PDU format according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for transmitting information at a terminal side according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method of information transmission according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an access network device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an information transmission system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Although the mapping requirement and configuration requirement of QoS flow and DRB are specified in the 3 GPP-related protocol, and one implementation is to map the QFI carried by the core network directly onto the DRB, that is, directly carry the QFI carried in the data packet sent by the core network on the corresponding DRB, and the length of the QFI is long, so the configuration would result in that the QFI carried on each DRB is too long, and also result in that the header length overhead of the SDAP PDU is too large because the QFI is carried in the header of the SDAP PDU.
Based on this, in various embodiments of the present invention, a secondary QFI (index in the corresponding DRB that characterizes QoS Flow mapping onto the corresponding DRB) with a shorter length is carried in the SDAP PDU, and the mapping relationship between the QoS Flow and the DRB configured at the same time is the mapping relationship between the QFI and the secondary QFI allocated to the QoS Flow by the core network.
Thus, because the SDAP PDU carries the short second-level QFI and the core network allocates the mapping relation between the QFI and the second-level QFI for the QoS flow, the overhead of the SDAP PDU is greatly reduced, and the length of the QFI carried on the DRB is also greatly reduced.
An embodiment of the present invention provides an information transmission method, which is applied to an access network device, and as shown in fig. 1, the method includes:
step 101: determining a first identifier of a first QoS flow at an SDAP layer of the access network equipment;
here, the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
That is to say, the first identifier is an ID allocated by the core network for the first QoS flow, and may be denoted as QFI1。
For the first identity, section 12 of the 3GPP 38.300 protocol specifies: a QoS Flow ID assigned to each QoS Flow of a PDU Session (Session) through a non-Access stratum (NAS) level.
That is, the specific specification of the first identifier may refer to the specification of the 3GPP 38.300 protocol.
Step 102: determining a second identifier corresponding to the first identifier by using a mapping relation between QoS Flow and DRB configured for the terminal;
here, the second identity characterizes an index on the respective DRB within the respective DRB to which the first QoS flow maps.
In practical applications, since the number of QoS flows carried on one DRB is very limited, the second identifier may be a short secondary identifier compared to the first identifier in general. That is, in general, the length of the second mark may be smaller than the length of the first mark. The second identifier can be marked as QFI2。
In practical application, the mapping relationship also needs to be configured to the terminal, so that the terminal can know the QFI of the first QoSflow1。
Based on this, in an embodiment, the method may further include:
configuring the mapping relation to a terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
However, in the related art (in the 3GPP protocol), how to configure the mapping relationship through signaling is not clear. Therefore, in the embodiment of the present invention, the mapping relationship may be configured to the terminal through RRC signaling.
Here, at present, in the 3GPP protocol, the 38.300 and 37.324 protocols both specify that the mapping of QoS flow and DRB has RRC configuration, i.e. the mapping relationship needs to be configured according to 38.331 protocol.
Based on this, in an embodiment, when the mapping relationship is configured to the terminal through RRC signaling, the second identifier is set at an IE added in the RRC signaling, so that the mapping relationship can be configured to the terminal through RRC signaling.
Specifically, when configuring the mapping relationship, first, as shown in fig. 2, radio bearer configuration (i.e., radio bearer configuration) needs to be performed, and specifically, DRB-Identity (i.e., DRB ID, the specific specification may refer to the specification of the 3GPP 38.331 protocol) and SDAP-configuration are configured in an IE of RRC, so as to indicate that the mapping relationship between QoS flow and DRB is configured. Secondly, as shown in fig. 3, the second identifier is set at the location of the SDAP configuration (i.e., SDAP-Config) IE, so as to embody what the configured mapping relationship is.
Wherein in FIG. 3, from top to bottom, QFI is set at the first mappedQoSflows1QFI is set at the second mappedQoSflow2And the two are in one-to-one correspondence, namely, the specific mapping relation between the QoS flow and the DRB is embodied. In other words, the mapping of the configuration is particularly QFI1And QFI2One-to-one correspondence relationship of (a).
In practice, QFI1And QFI2The forms present in the signalling may be identical, the two being different: "maxNrofQFIs" and "QFIs" are not defined identically.
In particular for QFI1The current protocol does not define the maximum numerical value 'XX' of the number of QFIs; meanwhile, the maximum value of the QFI value (i.e. maxNrofQFIs) is not defined, and "ZZ" and "YY" are used to replace the integers of the minimum value and the maximum value. In an embodiment of the present invention, the "ZZ" and "YY" parameters may be defined as QFI1For example, it can be defined that "ZZ" and "YY" are less than or equal to ("XX" + 1).
For QFI2In the embodiment of the present invention, "XX" may be defined as the maximum QoSflow number that can be borne by one DRB minus one, for example, if one DRB can bear 8 QoS flows at maximum, the value of QFI is 0 to 7, and the value of "XX" is 7, which represents the maximum value of the QFI number. Meanwhile, the maximum value of the QFI value (namely maxNrofQFIs) can also use 'ZZ' and 'YY' to replace the integer of the minimum value and the maximum value. In an embodiment of the present invention, the "ZZ" and "YY" parameters may be defined as QFI2For example, it can be defined that "ZZ" and "YY" are less than or equal to ("XX" + 1).
It should be noted that: QFI1And QFI2The values of the corresponding YY can be the same or different; accordingly, QFI1And QFI2The values of the corresponding 'ZZ' can be the same or different.
As can be seen from the above description, an IE is added at the location of the SDAP configuration IE to configure the specific mapping relationship between the QoSflow and the DRB.
Step 103: generating an SDAP PDU;
here, the generated SDAP PDU carries the second identifier.
In practical applications, the information about QoS flow is generally carried in the header of the SDAP PDU, and in order to reduce the modification to the packet format and thus reduce the processing amount, in an embodiment, when generating the SDAP PDU, the second identifier may be set in the header of the SDAP PDU.
Step 104: and sending out the generated SDAP PDU.
Here, the generated SDAP PDU is transmitted to the terminal.
As shown in fig. 4, the format of the SDAP PDU may refer to fig. 4, and specifically refer to the specification of the 3GPP 37.234 protocol, where it needs to be described that: QFI specified in the protocol is the ID assigned by the core network to the first QoS flow, whereas in the present application, although the format of the SDAP PDU uses the format specified by the protocol, QFI in the format is the second identifier.
It should be noted that: in practical applications, the access network device may be a base station, such as a next generation node b (gnb) in a 5G system.
Correspondingly, an embodiment of the present invention further provides an information transmission method, which is applied to a terminal, and as shown in fig. 5, the method includes:
step 501: receiving, at an SDAP layer of the terminal, an SDAP PDU;
step 502: analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow;
here, the second identity characterizes an index on the respective DRB within the respective DRB to which the first QoS flow maps.
Step 503: and determining a first identifier corresponding to the second identifier by using a mapping relation between the QoS flow and the DRB configured for the first identifier.
The first identifier is the QFI of the first QoS flow carried in a data packet sent by a core network. That is, the first identifier is an ID allocated by the core network for the first QoS flow.
In actual application, the access network device needs to configure the mapping relationship to the terminal, so that the terminal can acquire the first identifier of the first QoS flow.
Based on this, in an embodiment, the method may further include:
and receiving the mapping relation configured by the access network equipment.
As described above, how to configure the mapping relationship through signaling is not clear in the related art (in the 3GPP protocol). Therefore, in the embodiment of the present invention, the mapping relationship may be configured to the terminal through RRC signaling.
Correspondingly, the terminal receives RRC signaling sent by the access network equipment;
and analyzing the received RRC signaling to obtain the mapping relation.
Here, at present, in the 3GPP protocol, the 38.300 and 37.324 protocols both specify that the mapping of QoS flow and DRB has RRC configuration, i.e. the mapping relationship needs to be configured according to 38.331 protocol.
Based on this, in an embodiment, when the terminal analyzes the received RRC signaling, the mapping relationship is obtained at an IE added to the RRC signaling.
Specifically, as mentioned above, the access network device adds an IE at the SDAP configuration IE location for configuring the specific mapping relationship between QoS flow and DRB; that is, the newly added IE is at the location of the SDAP configuration IE in the RRC signaling.
In practical application, the information related to the QoS flow is generally carried in the header of the SDAP PDU, and in order to reduce the modification to the format of the data packet and thus reduce the processing amount, in an embodiment, the access network device may set the second identifier in the header of the SDAP PDU; correspondingly, when the terminal analyzes the received SDAP PDU, the second identifier is obtained at the head of the SDAP PDU.
An embodiment of the present invention further provides an information transmission method, as shown in fig. 6, the method includes:
step 601: at an SDAP layer of the access network equipment, the access network equipment determines a first identifier of a first QoS flow;
here, the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
Step 602: the access network equipment determines a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; and generating an SDAP PDU;
here, the second identity characterizes an index on the respective DRB within the respective DRB to which the first QoS flow maps.
And the generated SDAP PDU carries the second identifier.
Step 603: sending out the generated SDAP PDU;
step 604: at the SDAP layer of the terminal, the terminal receives the SDAP PDU;
step 605: the terminal analyzes the received SDAP PDU to obtain a second identifier of the first QoS flow;
step 606: and the terminal determines a first identifier corresponding to the second identifier by using the mapping relation between the QoS flow and the DRB configured for the terminal.
It should be noted that: the specific processing procedures of the access network device and the terminal in the embodiments of the present invention have been described in detail above, and are not described herein again.
In the information transmission method provided by the embodiment of the invention, the access network equipment determines a first identifier of a first QoS flow at an SDAP layer of the access network equipment; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; the access network equipment determines a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; and generating an SDAP PDU; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; the generated SDAP PDU carries the second identifier; the access network equipment sends the generated SDAP PDU; for the terminal, receiving SDAP PDU at the SDAP layer of the terminal; analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; and determining a first identifier corresponding to the second identifier by using a mapping relation between QoS Flow and DRB configured for the terminal, and determining a second identifier representing an index, in the corresponding DRB, of the QoS Flow mapped to the corresponding DRB by using the mapping relation between QoS Flow and DRB configured for the terminal, namely the mapping relation between QFI and second-level QFI allocated to the QFIflow by a core network is configured, and the second identifier, namely the second-level QFI, is carried by the SDAP PDU, so that the overhead of the SDAP PDU can be greatly reduced, and the length of the QFI carried by the DRB is also greatly reduced.
In addition, the configured mapping relationship between the QoS flow and the DRB is a one-to-one correspondence relationship between the first identifier and the second identifier, that is, the mapping relationship is a one-to-one correspondence relationship between the ID allocated by the core network to the corresponding QoS flow and the index of the corresponding QoS flow in the DRB, so that the terminal can quickly obtain the ID allocated by the core network to the corresponding QoS flow.
In addition, the mapping relation between the QoS Flow and the DRB is configured to the terminal through the RRC signaling, the mapping relation is clearly configured through the RRC signaling, the mapping relation is configured through the existing signaling, the signaling overhead is reduced, and the development of a communication technology is facilitated.
In order to implement the method according to the embodiment of the present invention, an information transmission apparatus is further provided in an access network device, and as shown in fig. 7, the apparatus includes:
a first determining unit 71, configured to determine, at an SDAP layer of an access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network;
a second determining unit 72, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a second identifier corresponding to the first identifier; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a generating unit 73 for generating an SDAP unit PDU; the generated SDAP PDU carries the second identifier;
a sending unit 74, configured to send out the generated SDAP PDU.
In actual application, the mapping relationship also needs to be configured to the terminal, so that the terminal can acquire the first identifier of the first QoS flow.
Based on this, in an embodiment, the apparatus may further include:
the configuration unit is used for configuring the mapping relation to the terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
However, in the related art (in the 3GPP protocol), how to configure the mapping relationship through signaling is not clear. Therefore, in the embodiment of the present invention, the configuration unit may configure the mapping relationship to the terminal through RRC signaling.
Here, at present, in the 3GPP protocol, the 38.300 and 37.324 protocols both specify that the mapping of QoS flow and DRB has RRC configuration, i.e. the mapping relationship needs to be configured according to 38.331 protocol.
Based on this, in an embodiment, when the mapping relationship is configured to the terminal through RRC signaling, the configuration unit sets the second identifier at an IE added in the RRC signaling, so as to configure the mapping relationship to the terminal through RRC signaling.
Specifically, the configuration unit adds an IE at the location of the SDAP configuration IE to configure a specific mapping relationship between QoS flow and DRB. That is, the newly added IE is at the location of the SDAP configuration IE in the RRC signaling.
In practical applications, the information about the QoS flow is generally carried in the header of the SDAP PDU, and in order to reduce the modification to the packet format and thus reduce the processing amount, in an embodiment, when generating the SDAP PDU, the generating unit 73 may set the second identifier in the header of the SDAP PDU.
In practical application, the first determining unit 71, the second determining unit 72, and the generating unit 73 may be implemented by a processor in an information transmission device; the configuration unit may be implemented by a processor in the information transfer device in combination with the communication interface.
In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides an information transmission apparatus, which is disposed on a terminal, and as shown in fig. 8, the apparatus includes:
a receiving unit 81, configured to receive, at an SDAP layer of a terminal, an SDAP PDU;
the analyzing unit 82 is configured to analyze the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a third determining unit 83, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a first identifier corresponding to the second identifier; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
In actual application, the access network device needs to configure the mapping relationship to the terminal, so that the terminal can acquire the first identifier of the first QoS flow.
Based on this, in an embodiment, the receiving unit 81 is further configured to receive the mapping relationship configured by the access network device.
As described above, how to configure the mapping relationship through signaling is not clear in the related art (in the 3GPP protocol). Therefore, in the embodiment of the present invention, the mapping relationship may be configured to the terminal through RRC signaling.
Accordingly, the receiving unit 81 is configured to: receiving RRC signaling sent by the access network equipment;
the analyzing unit 82 is further configured to analyze the received RRC signaling to obtain the mapping relationship.
Here, at present, in the 3GPP protocol, the 38.300 and 37.324 protocols both specify that the mapping of QoS flow and DRB has RRC configuration, i.e. the mapping relationship needs to be configured according to 38.331 protocol.
Based on this, in an embodiment, when the parsing unit 82 parses the received RRC signaling, the mapping relationship is obtained at the new IE of the RRC signaling.
Specifically, as mentioned above, the access network device adds an IE at the SDAP configuration IE location for configuring the specific mapping relationship between QoS flow and DRB; that is, the newly added IE is at the location of the SDAP configuration IE in the RRC signaling.
In practical application, the information related to the QoS flow is generally carried in the header of the SDAP PDU, and in order to reduce the modification to the format of the data packet and thus reduce the processing amount, in an embodiment, the access network device may set the second identifier in the header of the SDAP PDU; accordingly, the parsing unit 82 obtains the second identifier at the header of the SDAP PDU when parsing the received SDAP PDU.
In practical application, the receiving unit 81 may be implemented by a communication interface in an information transmission device; the parsing unit 82 and the third determining unit 83 may be implemented by a processor in the information transmission device.
It should be noted that: in the information transmission device provided in the above embodiment, only the division of the program modules is exemplified when information is transmitted, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission apparatus and the information transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.
Based on the hardware implementation of the program module, and in order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides an access network device, as shown in fig. 9, where the access network device 90 includes:
a first communication interface 91 capable of information interaction with other devices;
the first processor 92 is connected to the first communication interface 91 to implement information interaction with a terminal, and is configured to execute a method provided by one or more technical solutions of the access network device side when running a computer program. And the computer program is stored on the first memory 93.
Specifically, the first processor 92 is configured to determine, at the SDAP layer of the access network device 90, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; and generating an SDAP unit PDU; the generated SDAP PDU carries the second identifier;
a first communication interface 91, configured to send out the generated SDAP PDU.
In an embodiment, the first communication interface 91 is further configured to configure the mapping relationship to a terminal under the control of the first processor 92; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
In an embodiment, the first communication interface 91 is configured to configure the mapping relationship to the terminal through RRC signaling.
In an embodiment, the first processor 92 sets the second identifier at an IE added in RRC signaling, so as to configure the mapping relationship to the terminal through RRC signaling.
In an embodiment, the first processor 92 adds an IE at the location of the SDAP configuration IE to configure a specific mapping relationship between QoS flow and DRB. That is, the newly added IE is at the location of the SDAP configuration IE in the RRC signaling.
In one embodiment, the first processor 92 may set the second identifier in an SDAP PDU header when generating an SDAP PDU.
It should be noted that: the specific processing procedures of the first processor 92 and the first communication interface 91 are detailed in the method embodiment, and are not described herein again.
Of course, in practice, the various components in the access network device 90 are coupled together by a bus system 94. It will be appreciated that the bus system 94 is used to enable communications among the components. The bus system 94 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 94 in fig. 9.
The first memory 93 in the embodiment of the present invention is used to store various types of data to support the operation of the access network device 90. Examples of such data include: any computer program for operating on the access network device 90.
The method disclosed in the above embodiments of the present invention may be applied to the first processor 92, or implemented by the first processor 92. The first processor 92 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 92. The first Processor 92 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 92 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 83, and the first processor 92 reads the information in the first memory 93 and in combination with its hardware performs the steps of the aforementioned method.
In an exemplary embodiment, the access network Device 90 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
Based on the hardware implementation of the program module, and in order to implement the method on the terminal side in the embodiment of the present invention, an embodiment of the present invention further provides a terminal, as shown in fig. 10, where the terminal 100 includes:
the second communication interface 101 can perform information interaction with the access network equipment;
and a second processor 102, connected to the second communication interface 101, for implementing information interaction with an access network device, and when running a computer program, executing a method provided by one or more technical solutions of the terminal side. And said computer program is stored on said second memory 103.
Specifically, the second communication interface 101 is configured to receive, at an SDAP layer of the terminal, an SDAP PDU;
the second processor 102 is configured to parse the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; determining a first identifier corresponding to the second identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
In an embodiment, the second communication interface 101 is further configured to receive the mapping relationship configured by the access network device.
In an embodiment, the second communication interface 101 is configured to receive an RRC signaling sent by the access network device;
the second processor 102 is further configured to analyze the received RRC signaling to obtain the mapping relationship.
In an embodiment, when the second processor 102 parses the received RRC signaling, the mapping relationship is obtained at an IE added to the RRC signaling.
In an embodiment, the newly added IE is at the location of the SDAP configuration IE in the RRC signaling.
In one embodiment, the second processor 102 obtains the second identifier in a header of the SDAP PDU when parsing the received SDAP PDU.
It should be noted that: the specific processing procedures of the second processor 102 and the second communication interface 101 are detailed in the method embodiment, and are not described herein again.
Of course, in practice, the various components in the terminal 100 are coupled together by the bus system 104. It is understood that the bus system 104 is used to enable communications among the components. The bus system 104 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 104 in fig. 10.
The second memory 103 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal 100. Examples of such data include: any computer program for operating on the terminal 100.
The method disclosed in the above embodiments of the present invention may be applied to the second processor 102, or implemented by the second processor 102. The second processor 102 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 102. The second processor 102 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 102 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 103, and the second processor 102 reads the information in the second memory 103 and completes the steps of the foregoing method in combination with its hardware.
In an exemplary embodiment, the terminal 100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.
It is understood that the memories (first memory 93, second memory 103) of embodiments of the present invention may be either volatile or nonvolatile memories, and may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Synchronous Random Access Memory), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous joint Dynamic Random Access Memory (SLDRAM, SyncLinkDynamic Random Access Memory), Direct Memory (DRmb Random Access Memory). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides an information transmission system, as shown in fig. 11, where the information transmission system includes:
the access network device 111 is configured to determine, at an SDAP layer of the access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; and generating an SDAP PDU; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; the generated SDAPPDU carries the second identifier; and issuing said generated SDAP PDU
A terminal 112, configured to receive, at an SDAP layer of the terminal, an SDAP PDU; analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; and determining a first identifier corresponding to the second identifier by using a mapping relation between the QoS flow and the DRB configured for the first identifier.
It should be noted that: the specific processing procedures of the access network device 111 and the terminal 112 are described in detail above, and are not described here again.
In an exemplary embodiment, the embodiment of the present invention further provides a storage medium, specifically a computer storage medium, which is a computer readable storage medium, for example, the storage medium includes a first memory 83 storing a computer program, and the computer program can be executed by the first processor 92 of the access network device 90 to complete the steps of the foregoing access network device side method. For example, the second memory 103 stores a computer program, which can be executed by the second processor 102 of the terminal 100 to perform the steps of the terminal-side method. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.
It should be noted that: the technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (27)

1. An information transmission method, applied to an access network device, the method comprising:
determining a first identifier of a first quality of service flow QoS flow at a service data adaptation protocol SDAP layer of the access network equipment; the first identifier is a QoS Flow identifier QFI of the first QoS Flow carried in a data packet sent by a core network;
determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow configured for a terminal and data radio bearer DRB; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
generating an SDAP protocol data unit PDU; the generated SDAP PDU carries the second identifier;
and sending out the generated SDAP PDU.
2. The method of claim 1, further comprising:
configuring the mapping relation to a terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
3. The method of claim 2, wherein the configuring the mapping relationship to the terminal comprises:
and configuring the mapping relation to the terminal through Radio Resource Control (RRC) signaling.
4. The method according to claim 3, wherein when the mapping relationship is configured to the terminal through RRC signaling, the method further comprises:
and setting the second identifier at an element IE (Internet element) of the newly added information in RRC signaling.
5. The method of claim 4, wherein the newly added IE is at a SDAP configuration IE location in RRC signaling.
6. The method according to any of claims 1 to 5, wherein when generating SDAP PDUs, the method comprises:
and setting the second identification in the SDAP PDU head.
7. An information transmission method, applied to a terminal, the method comprising:
receiving, at an SDAP layer of the terminal, an SDAP PDU;
analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification represents the index of the first QoSflow mapped to the corresponding DRB in the corresponding DRB;
determining a first identifier corresponding to the second identifier by using a mapping relation between QoS flow and DRB configured for the first identifier; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
8. The method of claim 7, further comprising:
and receiving the mapping relation configured by the access network equipment.
9. The method of claim 8, wherein the receiving the mapping configured by the access network device comprises:
receiving RRC signaling sent by the access network equipment;
and analyzing the received RRC signaling to obtain the mapping relation.
10. The method of claim 9, wherein the mapping relationship is obtained at an additional IE of the RRC signaling when parsing the received RRC signaling.
11. The method of claim 10 wherein the new IE is at a location of an SDAP configuration IE in RRC signaling.
12. The method according to any of claims 7 to 11, wherein said second identification is obtained in a SDAP PDU header when parsing a received SDAP PDU.
13. An information transmission apparatus, comprising:
a first determining unit, configured to determine, at an SDAP layer of an access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network;
a second determining unit, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a second identifier corresponding to the first identifier; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a generating unit, configured to generate an SDAP unit PDU; the generated SDAP PDU carries the second identifier;
and the sending unit is used for sending the generated SDAP PDU.
14. The apparatus of claim 13, further comprising:
the configuration unit is used for configuring the mapping relation to the terminal; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
15. The apparatus according to claim 14, wherein the configuration unit is specifically configured to:
and configuring the mapping relation to the terminal through RRC signaling.
16. An information transmission apparatus, comprising:
a receiving unit, configured to receive, at an SDAP layer of a terminal, an SDAP PDU;
the analysis unit is used for analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped;
a third determining unit, configured to determine, by using a mapping relationship between QoS flow and DRB configured for the terminal, a first identifier corresponding to the second identifier; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
17. The apparatus of claim 16, wherein the receiving unit is further configured to receive the mapping relationship configured by an access network device.
18. The apparatus of claim 17, wherein the receiving unit is configured to: receiving RRC signaling sent by the access network equipment;
the analysis unit is further configured to analyze the received RRC signaling to obtain the mapping relationship.
19. An access network device, comprising:
a first processor, configured to determine, at an SDAP layer of an access network device, a first identifier of a first QoS flow; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network; determining a second identifier corresponding to the first identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the second identification represents the index of the first QoSflow mapped to the corresponding DRB in the corresponding DRB; and generating an SDAP unit PDU; the generated SDAP PDU carries the second identifier;
a first communication interface for issuing the generated SDAP PDU.
20. The access network device of claim 19, wherein the first communication interface is further configured to configure the mapping relationship to a terminal under the control of the first processor; the mapping relation is used for the terminal to determine a first identifier corresponding to the second identifier.
21. The access network device of claim 20, wherein the first communication interface is configured to configure the mapping relationship to the terminal through RRC signaling.
22. A terminal, comprising:
a second communication interface for receiving the SDAP PDU at the SDAP layer of the terminal;
the second processor is used for analyzing the received SDAP PDU to obtain a second identifier of the first QoS flow; the second identification characterizes an index on the respective DRB within which the first QoS flow is mapped; determining a first identifier corresponding to the second identifier by using a mapping relation between QoS flow and DRB configured for the terminal; the first identifier is QFI of the first QoS flow carried in a data packet sent by a core network.
23. The terminal of claim 22, wherein the second communication interface is further configured to receive the mapping configured by the access network device.
24. The terminal of claim 23, wherein the second communication interface is configured to receive RRC signaling sent by the access network device;
the second processor is further configured to analyze the received RRC signaling to obtain the mapping relationship.
25. An access network device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,
wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 6 when running the computer program.
26. A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,
wherein the second processor is adapted to perform the steps of the method of any of claims 7 to 12 when running the computer program.
27. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 6 or for performing the steps of the method of any one of claims 7 to 12 when executed by a processor.
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