CN116528395A - Data transmission method, device and protocol sublayer functional entity - Google Patents

Data transmission method, device and protocol sublayer functional entity Download PDF

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Publication number
CN116528395A
CN116528395A CN202210066390.7A CN202210066390A CN116528395A CN 116528395 A CN116528395 A CN 116528395A CN 202210066390 A CN202210066390 A CN 202210066390A CN 116528395 A CN116528395 A CN 116528395A
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China
Prior art keywords
bearer
configuration information
lower layer
layer
upper layer
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孙军帅
王莹莹
李娜
赵芸
刘光毅
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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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Priority to CN202210066390.7A priority Critical patent/CN116528395A/en
Priority to PCT/CN2023/071676 priority patent/WO2023138448A1/en
Publication of CN116528395A publication Critical patent/CN116528395A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14—Multichannel or multilink protocols

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Communication Control (AREA)

Abstract

The invention provides a data transmission method, a device and a protocol sublayer functional entity, wherein the method comprises the following steps: receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer; determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification; the embodiment of the invention realizes flexible mapping of upper layer bearing and lower layer bearing while reducing PDU overhead by combining mapping relation configuration information and PDU carrying.

Description

Data transmission method, device and protocol sublayer functional entity
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data transmission device, and a protocol sublayer functional entity.
Background
For the design goal of the very simple Network (Lite Network) of the next generation mobile communication, it is proposed to introduce a User Plane (UP) function into the L3 (Layer 3) for data processing.
An UP function (denoted AS L3 UP) is introduced in L3 (the layer 3 protocol of the AS layer in a 5G system includes only the RRC protocol sub-layer) of the Access layer (AS layer). In the 3G/4G/5G system, L3 at the AS layer (the terminal side, and for the network side, the RRC protocol layer) has only a Control Plane (CP), i.e. only a radio resource Control (Radio Resource Control, RRC) protocol layer (or sub-layer), and the RRC protocol layer performs a radio resource Control function.
In 6G, an SBA RAN (Service Based Architecture RAN, RAN of a servitization architecture) scheme is proposed, as shown in fig. 1, which is a 6G flexible protocol stack scheme. In this scheme, there are multiple correspondences in the relationships between different protocol sublayers, and multiple functional bodies may exist in the same functional protocol sublayers at the same time. The flexible protocol stack as shown in fig. 1 comprises: the access stratum AS and the non-access stratum NAS. The AS layer comprises: layer 1 (L1), layer 2 (L2) and layer 3 (L3), and the AS layer is divided into a user plane function UP and a control plane function CP. Wherein, L1, L2, L3 respectively include corresponding protocol sublayer functional entities. As shown in fig. 1, L1 includes: RRC, L3UP; l2 comprises: SDAP (Service Data Adaptation Protocol ), PDCP (Packet Data Convergence Protocol, packet Data convergence protocol), RLC (Radio Link Control ), C-MAC (Control-Medium Access Control, control plane-medium access Control), D-MAC (Data-Medium Access Control, data plane-medium access Control), PHY (Physical ), and the like.
In the protocol stack, one UE may have multiple L3UP/SDAP/PDCP/RLC protocol functionalities at the same time, such as URLLC (Ultra-reliable and Low Latency Communications, high reliability and low latency communication) one, eMBB (Enhanced Mobile Broadband ) one, etc. But the terminal in the prior art cannot determine the bearer mapping paths between these protocol sublayers.
Disclosure of Invention
The embodiment of the invention aims to provide a data transmission method, a data transmission device and a protocol sublayer functional entity, so as to solve the problem that a terminal cannot accurately determine the mapping bearing of a data packet under the condition that the protocol sublayer functional entity in the terminal has a many-to-one or many-to-many mapping relation.
In order to solve the above-mentioned problems, an embodiment of the present invention provides a data transmission method, which is executed by a first protocol sublayer function entity, including:
receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
Wherein the mapping relationship configuration information includes at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
Third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
Wherein, in case that the mapping relation configuration information includes first configuration information, the PDU carries IB identification;
the determining, according to the IB identifier and the first configuration information, an upper layer bearer indicated by the PDU includes:
and determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
Wherein, in case that the mapping relation configuration information includes the second configuration information, the PDU carries IBB identification;
the determining, according to the IBB identifier and the second configuration information, an upper layer bearer indicated by the PDU includes:
determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
and determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
Wherein, in case that the mapping relation configuration information includes third configuration information, the PDU carries IBB identification;
The determining, according to the IBB identifier and the third configuration information, an upper layer bearer indicated by the PDU includes:
determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
Wherein, the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Wherein, the mapping relation between the upper layer bearing and the lower layer bearing is M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The embodiment of the invention also provides a data transmission method, which is executed by the second protocol sublayer functional entity and comprises the following steps:
constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB mark of the protocol sub-layer functional entity or an internal bearer IBB mark of a lower layer bearer;
and sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating the corresponding upper layer bearing.
Wherein the mapping relationship configuration information includes at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
Wherein, the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Wherein, the mapping relation between the upper layer bearing and the lower layer bearing is M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The embodiment of the invention also provides a data transmission device, which is applied to the first protocol sublayer functional entity and comprises:
the receiving module is used for receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
And the determining module is used for determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
The embodiment of the invention also provides a protocol sublayer functional entity, which comprises a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, and the processor is used for executing the following operations:
receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
Wherein the mapping relationship configuration information includes at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
Third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
Wherein, in case that the mapping relation configuration information includes first configuration information, the PDU carries IB identification; the processor is also configured to perform the following operations:
and determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
Wherein, in case that the mapping relation configuration information includes the second configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
and determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
Wherein, in case that the mapping relation configuration information includes third configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
Determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
Wherein, the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Wherein, the mapping relation between the upper layer bearing and the lower layer bearing is M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The embodiment of the invention also provides a data transmission device, which is applied to the second protocol sublayer functional entity and comprises:
the construction module is used for constructing a protocol data unit PDU according to the predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and the sending module is used for sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating a corresponding upper layer bearer.
The embodiment of the invention also provides a protocol sublayer functional entity, which comprises a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, and the processor is used for executing the following operations:
constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB mark of the protocol sub-layer functional entity or an internal bearer IBB mark of a lower layer bearer;
and sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating the corresponding upper layer bearing.
Wherein the mapping relationship configuration information includes at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
Second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
Wherein, the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Wherein, the mapping relation between the upper layer bearing and the lower layer bearing is M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
When M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The embodiment of the invention also provides a protocol sublayer functional entity, which comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the processor realizes the data transmission method when executing the program.
The embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the data transmission method described above.
The technical scheme of the invention has at least the following beneficial effects:
in the data transmission method, the device and the protocol sublayer functional entity, the flexible mapping of the upper layer bearing and the lower layer bearing is realized while the PDU overhead is reduced by combining the mapping relation configuration information and the PDU carrying.
Drawings
FIG. 1 shows a schematic diagram of a 6G flexible protocol stack;
fig. 2 shows one of the flowcharts of the steps of the data transmission method according to the embodiment of the present invention;
Fig. 3 is a schematic diagram showing a PDU format in a data transmission method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a flexible connection model between protocol sub-functional entities in a data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating mapping of first configuration information in a data transmission method according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating mapping of second configuration information in the data transmission method according to the embodiment of the present invention;
fig. 7 is a schematic diagram illustrating mapping of third configuration information in the data transmission method according to the embodiment of the present invention;
FIG. 8 is a second flowchart illustrating a data transmission method according to an embodiment of the present invention;
fig. 9 shows one of schematic structural diagrams of a data transmission device according to an embodiment of the present invention;
fig. 10 shows one of the schematic structural diagrams of the functional entities of the protocol sub-layer according to the embodiment of the present invention;
FIG. 11 is a schematic diagram showing a second embodiment of a data transmission device according to the present invention;
fig. 12 shows a second schematic structural diagram of a functional entity of a protocol sublayer according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, an embodiment of the present invention provides a data transmission method, which is executed by a first protocol sublayer function entity, and includes:
step 201, receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier carried by a Lower Layer (Lower Layer);
step 202, determining an Upper Layer (Upper Layer) bearer indicated by the PDU according to the predetermined mapping relationship configuration information and the IB identifier or IBB identifier.
In the embodiment of the invention, the PDU (Protocol Data Unit ) constructed by the protocol sublayer functional body carries an IB ID (IB identification) or an IBB ID (IBB identification). For example, an exemplary diagram of a PDU format carrying an IB ID or IBB ID is shown in FIG. 3.
Alternatively, the mapping relationship configuration information may be preconfigured to each protocol sublayer functional entity through RRC signaling. The mapping relationship configuration information comprises at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
Third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
The embodiment of the invention realizes flexible mapping of upper layer bearing and lower layer bearing while reducing PDU overhead by combining mapping relation configuration information and PDU carrying.
A model of flexible connections between protocol sub-functionalities is shown in fig. 4. Wherein:
E H1 : representing an H1 protocol sublayer functionality in protocol layer H, such as one of RRC in L3, L3UP (as shown in FIG. 1), E 0 H1 And E is k H1 Respectively representing different protocol functional bodies of the same protocol sub-layer;
E N1 : representing an N1 protocol sub-layer functionality in protocol layer N, e.g. a protocol sub-layer of one of PDCP, RLC, SDAP in L2, E 0 N1 And E is z N1 Respectively representing different protocol functional bodies of the same protocol sub-layer;
E W1 : a protocol sub-layer representing one of the W1 protocol sub-layer functionalities in protocol layer W, such as PDCP, RLC, SDAP in L2;
the H/N/W may be the same protocol sub-layer, such as L2 or L3.
H 1 0,0…n : the bearer indicating the next connection of the protocol sublayer function H1 with it has an ID of 0 … n.
N 1 0,0…n : the bearer indicating the next connection of the protocol sublayer function N1 with it has an ID of 0 … N.
The mapping relationship in fig. 4 includes:
upper layer bearing H 1 0,0 Mapping to lower layer bearer N 1 0,0 And the mapping relation is one-to-one.
Upper layer bearing H 1 0,n And H 1 k,n Simultaneous mapping to lower layer bearers N 1 0,i The upper layer is a many-to-one mapping relationship, and the upper layer carries functions from different protocol sublayers.
Upper layer bearing H 1 k,i Mapping to lower layer bearer N 1 0,n And the mapping relation is one-to-one.
Upper layer bearing H 1 k,m Mapping to lower layer bearer N 1 z,0 And N 1 z,n And the mapping relation is one-to-many.
In summary, in the embodiment of the present invention, the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively.
In an alternative embodiment of the present invention, the internal bearer IB identity of the protocol sublayer functional entity is related to the maximum number of bearers that can be established by the protocol sublayer functional entity.
Specifically, to reduce the overhead of carrying the Bearer length for the data packet, the Internal Bearers (IB) are defined according to the maximum number of bearers that can be established by a protocol sublayer functionality. For example, if a protocol sublayer functionality can include 128 bearers at maximum, the IB identifier is specifically an IB ID; IB id=0, 1, …,127.
As an alternative embodiment, where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB and one IB maps to one lower layer bearer; in other words, one IB is allocated for one-to-one mapping; IB as IB id=0 in fig. 5.
As another alternative embodiment, in the case where M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IBs, respectively, and M IBs are mapped to one lower layer bearer; in other words, M IBs are allocated for the many-to-one mapping relationship, where M is the number of upper layer bearers. As in fig. 5, IB id=1, 2, which corresponds to bearers n and 0 of the upper layer different protocol sub-layer functionalities one by one, the IB number is 2 because of the 2 upper layer bearers (m=2).
As another alternative embodiment, in the case where M is equal to 1 and N is greater than 1, one upper layer bearer maps to N IBs, which map to N lower layer bearers, respectively; in other words, N IBs are allocated for the one-to-many mapping relationship, where N is the number of lower layer bearers. As in IB id=3, 4 in fig. 5, the number of IB is 2 because of the 2 lower layer bearers (n=2) corresponding to bearer i of the protocol sublayer functionality of the upper layer.
As another alternative embodiment, in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers are mapped to M IBs, respectively, and the M IBs are mapped to N lower layer bearers. In other words, M IBs are allocated for the many-to-many mapping relationship, where M is the number of upper layer bearers. As in fig. 5, IB id=5, 6,7, the bearers n+z, i+z and i+w of the different protocol sub-layer functionalities of the upper layer are in one-to-one correspondence, and since 3 upper layers are bearer (m=3), IB number is 3. These three IBs are multiplexed and mapped onto m+z and n+z on 2 lower layer bearers within the protocol sublayer.
Correspondingly, in the case that the mapping relation configuration information includes first configuration information, the PDU carries IB identification;
the determining, according to the IB identifier and the first configuration information, an upper layer bearer indicated by the PDU includes:
and determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation. For example, if IB ID carried by PDU is 0, determining that upper layer bearer is bearer 0; for another example, if the IB ID carried by the PDU is 4, the upper layer bearer is determined to be bearer i.
In another alternative embodiment of the present invention, in order to further compress the ID value of the internal Bearer, the internal Bearer ID (IB ID) is defined according to the maximum number of bearers that can be established by a protocol sublayer function. For example, if one protocol sub-layer functionality can include 128 bearers at maximum, then iid=0, 1, …,127. On this basis, the internal bearer IDs (Intra Bearer of Bearer ID, IBB ID) of the lower layer bearers are further defined according to the number of upper layer bearers to which one lower layer bearer can map. I.e. the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Specifically, the IBB identifier is an IBB ID; defining the IDs (Intra Bearer of Bearer, IBB) of the inner bearers of the lower layer bearers according to the number of upper layer bearers to which one lower layer bearer can map; for example, as shown in fig. 6, if the lower layer bearer 0 maps to an upper layer bearer, IBB id=0; the lower layer bearer i maps two upper layer bearers, and IBB id=0, 1; the lower layer bearing m and the lower layer bearing n are respectively mapped with an upper layer bearing, and the IBB ID of the lower layer bearing m and the upper layer bearing n are respectively 0; the lower layer bearers m+z and n+z map the two upper layer bearers respectively, and their IBB IDs are 0,1 respectively. Because the inner bearer 6 (i.e., IB id=6) is mapped onto both the lower layer bearers m+z and n+z, the inner bearer 6 is mapped onto the inner bearer 1 (i.e., IBB id=1) on the lower layer bearer m+z and the inner bearer 0 (i.e., IBB id=0) on the lower layer bearer n+z, respectively.
Correspondingly, in the case that the mapping relation configuration information comprises second configuration information, the PDU carries an IBB identifier;
the determining, according to the IBB identifier and the second configuration information, an upper layer bearer indicated by the PDU includes:
determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
And determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
For example, as shown in fig. 6, if the lower layer bearer ID of the received PDU is i and the IBB ID carried by the PDU is 0, the corresponding IB ID is 1, and the upper layer bearer ID corresponding to IB 1 is n; for another example, as shown in fig. 6, the lower layer bearer ID of the received PDU is n, and the IBB ID carried by the PDU is 0, the corresponding IB ID is 4, and the upper layer bearer ID corresponding to IB 4 is i.
In another optional embodiment of the present invention, the PDU carries IBB identification when the mapping relationship configuration information includes third configuration information, which is mapped directly in the protocol sublayer in the unit of lower layer bearer; i.e. the combination of upper layer bearer i with one lower layer bearer j + one inner bearer IBB. For example, an upper layer bearer 0 is mapped with an inner bearer combination of lower layer bearer 0+ibb ID of 0, and the lower layer bearer 0 maps a bearer, so IBB id=0.
Correspondingly, the determining the upper layer bearer indicated by the PDU according to the IBB identifier and the third configuration information includes:
determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
For example, as shown in fig. 7, if the lower layer bearer ID of the received PDU is i and the IBB ID carried by the PDU is 0, the corresponding upper layer bearer ID is n; for another example, as shown in fig. 7, if the lower layer bearer ID of the received PDU is n and the IBB ID carried by the PDU is 0, the corresponding upper layer bearer ID is i.
In summary, the data transmission method provided by the embodiment of the invention breaks through the limitation that the layers in the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the cost is reduced on the basis of ensuring flexibility; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
As shown in fig. 8, an embodiment of the present invention further provides a data transmission method, which is executed by a second protocol sublayer function entity, including:
step 801, constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
Step 802, the PDU is sent, where an IB identifier or an IBB identifier carried by the PDU is used to indicate a corresponding upper layer bearer.
In the embodiment of the invention, the PDU (Protocol Data Unit ) constructed by the protocol sublayer functional body carries an IB ID (IB identification) or an IBB ID (IBB identification). For example, an exemplary diagram of a PDU format carrying an IB ID or IBB ID is shown in FIG. 3.
Alternatively, the mapping relationship configuration information may be preconfigured to each protocol sublayer functional entity through RRC signaling. The mapping relationship configuration information comprises at least one of the following:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
The embodiment of the invention realizes flexible mapping of upper layer bearing and lower layer bearing while reducing PDU overhead by combining mapping relation configuration information and PDU carrying. And the construction of the PDU is realized in the MAC layer of the terminal in a unified way, namely, the MAC layer is used for constructing the MAC PDU carrying the IB ID or the IBB ID in a unified way, thereby realizing the 0 influence on the physical layer.
In an alternative embodiment of the present invention, the internal bearer IB identity of the protocol sublayer functional entity is related to the maximum number of bearers that can be established by the protocol sublayer functional entity.
Specifically, to reduce the overhead of carrying the Bearer length for the data packet, the Internal Bearers (IB) are defined according to the maximum number of bearers that can be established by a protocol sublayer functionality. For example, if a protocol sublayer functionality can include 128 bearers at maximum, the IB identifier is specifically an IB ID; IB id=0, 1, …,127.
As another alternative embodiment, in the case where M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IBs, respectively, and M IBs are mapped to one lower layer bearer; in other words, M IBs are allocated for the many-to-one mapping relationship, where M is the number of upper layer bearers. As in fig. 5, IB id=1, 2, which corresponds to bearers n and 0 of the upper layer different protocol sub-layer functionalities one by one, the IB number is 2 because of the 2 upper layer bearers (m=2).
As another alternative embodiment, in the case where M is equal to 1 and N is greater than 1, one upper layer bearer maps to N IBs, which map to N lower layer bearers, respectively; in other words, N IBs are allocated for the one-to-many mapping relationship, where N is the number of lower layer bearers. As in IB id=3, 4 in fig. 5, the number of IB is 2 because of the 2 lower layer bearers (n=2) corresponding to bearer i of the protocol sublayer functionality of the upper layer.
As another alternative embodiment, in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers are mapped to M IBs, respectively, and the M IBs are mapped to N lower layer bearers. In other words, M IBs are allocated for the many-to-many mapping relationship, where M is the number of upper layer bearers. As in fig. 5, IB id=5, 6,7, the bearers n+z, i+z and i+w of the different protocol sub-layer functionalities of the upper layer are in one-to-one correspondence, and since 3 upper layers are bearer (m=3), IB number is 3. These three IBs are multiplexed and mapped onto m+z and n+z on 2 lower layer bearers within the protocol sublayer.
In another alternative embodiment of the present invention, in order to further compress the ID value of the internal Bearer, the internal Bearer ID (IB ID) is defined according to the maximum number of bearers that can be established by a protocol sublayer function. For example, if one protocol sub-layer functionality can include 128 bearers at maximum, then iid=0, 1, …,127. On this basis, the internal bearer IDs (Intra Bearer of Bearer ID, IBB ID) of the lower layer bearers are further defined according to the number of upper layer bearers to which one lower layer bearer can map. I.e. the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
Specifically, the IBB identifier is an IBB ID; defining the IDs (Intra Bearer of Bearer, IBB) of the inner bearers of the lower layer bearers according to the number of upper layer bearers to which one lower layer bearer can map; for example, as shown in fig. 6, if the lower layer bearer 0 maps to an upper layer bearer, IBB id=0; the lower layer bearer i maps two upper layer bearers, and IBB id=0, 1; the lower layer bearing m and the lower layer bearing n are respectively mapped with an upper layer bearing, and the IBB ID of the lower layer bearing m and the upper layer bearing n are respectively 0; the lower layer bearers m+z and n+z map the two upper layer bearers respectively, and their IBB IDs are 0,1 respectively. Because the inner bearer 6 (i.e., IB id=6) is mapped onto both the lower layer bearers m+z and n+z, the inner bearer 6 is mapped onto the inner bearer 1 (i.e., IBB id=1) on the lower layer bearer m+z and the inner bearer 0 (i.e., IBB id=0) on the lower layer bearer n+z, respectively.
In summary, the data transmission method provided by the embodiment of the invention breaks through the limitation that the layers in the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the overhead is reduced on the basis of ensuring flexibility of bearing; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
As shown in fig. 9, an embodiment of the present invention further provides a data transmission device, which is applied to a first protocol sublayer function entity, including:
a receiving module 901, configured to receive a protocol data unit PDU, where the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or the PDU carries an internal bearer IBB identifier of a lower layer bearer;
a determining module 902, configured to determine an upper layer bearer indicated by the PDU according to the predetermined mapping relationship configuration information and the IB identifier or the IBB identifier.
As an optional embodiment, the mapping relationship configuration information includes at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
Wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
As an optional embodiment, in a case that the mapping relationship configuration information includes first configuration information, the PDU carries IB identification;
the determining module includes:
and the first determining submodule is used for determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
As an optional embodiment, in a case that the mapping relationship configuration information includes second configuration information, the PDU carries IBB identification;
the determining module includes:
a second determining submodule, configured to determine a lower layer bearer identifier of the received PDU;
a third determining submodule, configured to determine a corresponding IB identifier according to the IBB identifier, the lower layer bearer identifier, and the fourth mapping relationship;
and a fourth determining submodule, configured to determine an upper layer bearer corresponding to the IB identifier according to the determined IB identifier and the third mapping relationship.
As an optional embodiment, in a case that the mapping relationship configuration information includes third configuration information, the PDU carries IBB identification;
The determining module includes:
a fifth determining submodule, configured to determine a lower layer bearer identifier of the PDU received;
and a sixth determining submodule, configured to determine a corresponding upper layer bearer according to the IBB identifier, the lower layer bearer identifier, and the fifth mapping relationship.
As an optional embodiment, the internal bearer IB identifier of the protocol sublayer functional entity is related to a maximum number of bearers that can be established by the protocol sublayer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
As an optional embodiment, the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
Or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The data transmission method provided by the embodiment of the invention breaks through the limitation that the layer-to-layer interface of the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the overhead is reduced on the basis of ensuring flexibility of bearing; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
It should be noted that, the data transmission device provided in the embodiment of the present invention is a device capable of executing the data transmission method, and all embodiments of the data transmission method are applicable to the device, and the same or similar beneficial effects can be achieved.
As shown in fig. 10, the embodiment of the present invention further provides a protocol sublayer functional entity, including a processor 100 and a transceiver 110, where the transceiver 110 receives and transmits data under the control of the processor 100, and the processor 100 is configured to perform the following operations:
Receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
As an optional embodiment, the mapping relationship configuration information includes at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
As an optional embodiment, in a case that the mapping relationship configuration information includes first configuration information, the PDU carries IB identification; the processor is also configured to perform the following operations:
And determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
As an optional embodiment, in a case that the mapping relationship configuration information includes second configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
and determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
As an optional embodiment, in a case that the mapping relationship configuration information includes third configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
As an optional embodiment, the internal bearer IB identifier of the protocol sublayer functional entity is related to a maximum number of bearers that can be established by the protocol sublayer functional entity;
The inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
As an optional embodiment, the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
As an optional embodiment, the mapping relationship configuration information includes at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
Second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
As an optional embodiment, the internal bearer IB identifier of the protocol sublayer functional entity is related to a maximum number of bearers that can be established by the protocol sublayer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
As an optional embodiment, the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
Or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The data transmission method provided by the embodiment of the invention breaks through the limitation that the layer-to-layer interface of the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the overhead is reduced on the basis of ensuring flexibility of bearing; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
It should be noted that, the protocol sub-layer functional entity provided in the embodiment of the present invention is a protocol sub-layer functional entity capable of executing the data transmission method, so all embodiments of the data transmission method are applicable to the protocol sub-layer functional entity, and the same or similar beneficial effects can be achieved.
As shown in fig. 11, an embodiment of the present invention further provides a data transmission device, which is applied to a second protocol sublayer function entity, including:
A construction module 1101, configured to construct a protocol data unit PDU according to predetermined mapping relation configuration information, where the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or the PDU carries an internal bearer IBB identifier of a lower layer bearer;
a sending module 1102, configured to send the PDU, where an IB identifier or an IBB identifier carried by the PDU is used to indicate a corresponding upper layer bearer.
The data transmission method provided by the embodiment of the invention breaks through the limitation that the layer-to-layer interface of the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the overhead is reduced on the basis of ensuring flexibility of bearing; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
It should be noted that, the data transmission device provided in the embodiment of the present invention is a device capable of executing the data transmission method, and all embodiments of the data transmission method are applicable to the device, and the same or similar beneficial effects can be achieved.
As shown in fig. 12, an embodiment of the present invention further provides a protocol sublayer functional entity, including a processor 1200 and a transceiver 1210, where the transceiver 1210 receives and transmits data under the control of the processor 1200, and the processor 1200 is configured to perform the following operations:
constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB mark of the protocol sub-layer functional entity or an internal bearer IBB mark of a lower layer bearer;
and sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating the corresponding upper layer bearing.
As an optional embodiment, the mapping relationship configuration information includes at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
Wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
As an optional embodiment, the internal bearer IB identifier of the protocol sublayer functional entity is related to a maximum number of bearers that can be established by the protocol sublayer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
As an optional embodiment, the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
The data transmission method provided by the embodiment of the invention breaks through the limitation that the layer-to-layer interface of the 5G protocol stack cannot be flexibly selected, and realizes flexible expansion of the protocol stack function; specifically, by combining RRC signaling configuration and PDU carrying, the overhead is reduced on the basis of ensuring flexibility of bearing; and the MAC layer is used for uniformly constructing the MAC PDU carrying the IB ID or the IBB ID, so that the 0 influence on the physical layer is realized; thus, different slices serving the same terminal can have the same or different protocol stack functions.
It should be noted that, the protocol sub-layer functional entity provided in the embodiment of the present invention is a protocol sub-layer functional entity capable of executing the data transmission method, so all embodiments of the data transmission method are applicable to the protocol sub-layer functional entity, and the same or similar beneficial effects can be achieved.
The embodiment of the invention also provides a protocol sublayer functional entity, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes each process in the data transmission method embodiment as described above when executing the program, and can achieve the same technical effect, and the repetition is avoided, and the description is omitted here.
The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor implements each process in the embodiment of the data transmission method described above, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (26)

1. A data transmission method performed by a first protocol sublayer function entity, comprising:
receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
2. The method of claim 1, wherein the mapping configuration information comprises at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
3. The method according to claim 2, wherein in case the mapping relationship configuration information comprises first configuration information, the PDU carries an IB identification;
the determining, according to the IB identifier and the first configuration information, an upper layer bearer indicated by the PDU includes:
and determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
4. The method according to claim 2, wherein in case the mapping relationship configuration information comprises second configuration information, the PDU carries an IBB identity;
the determining, according to the IBB identifier and the second configuration information, an upper layer bearer indicated by the PDU includes:
determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
and determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
5. The method according to claim 2, wherein in case the mapping relationship configuration information comprises a third configuration information, the PDU carries an IBB identity;
The determining, according to the IBB identifier and the third configuration information, an upper layer bearer indicated by the PDU includes:
determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
6. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
7. The method of claim 2, wherein the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
Or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
8. A data transmission method performed by a second protocol sublayer function entity, comprising:
constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB mark of the protocol sub-layer functional entity or an internal bearer IBB mark of a lower layer bearer;
and sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating the corresponding upper layer bearing.
9. The method of claim 8, wherein the mapping configuration information comprises at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
Third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
10. The method of claim 8, wherein the step of determining the position of the first electrode is performed,
the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
11. The method of claim 9, wherein the mapping relationship between the upper layer bearer and the lower layer bearer is an M-to-N mapping relationship; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
Or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
12. A data transmission device applied to a first protocol sublayer functional entity, comprising:
the receiving module is used for receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and the determining module is used for determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
13. A protocol sublayer function comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
receiving a protocol data unit PDU, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and determining the upper layer bearing indicated by the PDU according to the predetermined mapping relation configuration information and the IB identification or the IBB identification.
14. The protocol sublayer function according to claim 13, wherein the mapping relation configuration information comprises at least one of:
First configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
15. The protocol sublayer function according to claim 14, wherein in case the mapping relation configuration information comprises first configuration information, the PDU carries IB identification; the processor is also configured to perform the following operations:
and determining an upper layer bearing corresponding to the IB mark according to the IB mark and the first mapping relation.
16. The protocol sublayer function according to claim 14, wherein in case the mapping relation configuration information comprises second configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
Determining a lower layer bearing identifier of the received PDU;
determining a corresponding IB (IB) identifier according to the IBB identifier, the lower layer bearing identifier and the fourth mapping relation;
and determining an upper layer bearing corresponding to the IB mark according to the determined IB mark and the third mapping relation.
17. The protocol sublayer function according to claim 14, wherein in case the mapping relation configuration information comprises a third configuration information, the PDU carries IBB identification; the processor is also configured to perform the following operations:
determining a lower layer bearing identifier of the received PDU;
and determining a corresponding upper layer bearing according to the IBB identifier, the lower layer bearing identifier and the fifth mapping relation.
18. The protocol sub-layer functional entity according to claim 13, wherein the internal bearer IB identity of the protocol sub-layer functional entity is related to a maximum number of bearers that can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
19. The protocol sublayer function according to claim 14, wherein the mapping relation between upper layer bearers and lower layer bearers is an M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
In the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
20. A data transmission device applied to a second protocol sublayer function entity, comprising:
the construction module is used for constructing a protocol data unit PDU according to the predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB identifier of the protocol sublayer functional entity or an internal bearer IBB identifier of a lower layer bearer;
and the sending module is used for sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating a corresponding upper layer bearer.
21. A protocol sublayer function comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
Constructing a protocol data unit PDU according to predetermined mapping relation configuration information, wherein the PDU carries an internal bearer IB mark of the protocol sub-layer functional entity or an internal bearer IBB mark of a lower layer bearer;
and sending the PDU, wherein an IB mark or an IBB mark carried by the PDU is used for indicating the corresponding upper layer bearing.
22. The protocol sublayer function according to claim 21, wherein the mapping relation configuration information comprises at least one of:
first configuration information, the first configuration information comprising: a first mapping relation between an upper layer bearer and an IB of a protocol sub-layer functional entity, and a second mapping relation between the IB of the protocol sub-layer functional entity and a lower layer bearer;
second configuration information, the second configuration information comprising: the upper layer bears a third mapping relation with the IB of the protocol sub-layer functional entity and a fourth mapping relation between the IB of the protocol sub-layer functional entity and the target combination;
third configuration information, the third configuration information comprising: the upper layer bears a fifth mapping relation with the target combination;
wherein the target combination comprises: a lower layer bearer and an inner bearer IBB of the lower layer bearer.
23. The protocol sublayer function according to claim 21, wherein,
the internal bearer IB mark of the protocol sub-layer functional entity is related to the maximum bearer number which can be established by the protocol sub-layer functional entity;
the inner bearer IBB identity of the lower layer bearer is related to the number of upper layer bearers that can be mapped by one lower layer bearer.
24. The protocol sublayer function according to claim 22, wherein the mapping relation between upper layer bearers and lower layer bearers is an M to N mapping relation; m and N are integers greater than or equal to 1 respectively;
in the case where M is equal to 1 and N is equal to 1, one upper layer bearer maps to one IB, one IB maps to one lower layer bearer;
or alternatively, the process may be performed,
under the condition that M is greater than 1 and N is equal to 1, M upper layer bearers are mapped to M IB respectively, and M IB are mapped to one lower layer bearer;
or alternatively, the process may be performed,
when M is equal to 1 and N is greater than 1, one upper layer bearer is mapped to N IBs, which are mapped to N lower layer bearers, respectively;
or alternatively, the process may be performed,
in the case where M is greater than 1 and N is greater than 1, the M upper layer bearers map to M IBs, respectively, and the M IBs map to N lower layer bearers.
25. A protocol sublayer functional entity comprising a memory, a processor, and a program stored on the memory and executable on the processor; the data transmission method according to any one of claims 1 to 7 or the data transmission method according to any one of claims 8 to 11 is implemented when the processor executes the program.
26. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, realizes the steps in the data transmission method according to any one of claims 1-7 or the steps in the data transmission method according to any one of claims 8-11.
CN202210066390.7A 2022-01-20 2022-01-20 Data transmission method, device and protocol sublayer functional entity Pending CN116528395A (en)

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