CN110876163A - Data mapping configuration method, data transmission method and communication equipment - Google Patents

Data mapping configuration method, data transmission method and communication equipment Download PDF

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Publication number
CN110876163A
CN110876163A CN201811002056.5A CN201811002056A CN110876163A CN 110876163 A CN110876163 A CN 110876163A CN 201811002056 A CN201811002056 A CN 201811002056A CN 110876163 A CN110876163 A CN 110876163A
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China
Prior art keywords
qfi
short
drb
qfis
data
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CN201811002056.5A
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Chinese (zh)
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黄学艳
孙军帅
韩星宇
王莹莹
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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 CN201811002056.5A priority Critical patent/CN110876163A/en
Publication of CN110876163A publication Critical patent/CN110876163A/en
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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • 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
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0263—Traffic management, e.g. flow control or congestion control per individual bearer or channel involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]

Abstract

The invention provides a data mapping configuration method, a data transmission method and communication equipment, belonging to the technical field of wireless communication, wherein the data mapping configuration method comprises the following steps: if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, establishing a one-to-one mapping relation between the new QFI and the short QFIs of a first DRB, wherein the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFIs is smaller than the bit number of the QFIs, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs can be the same, and M and N are positive integers greater than or equal to 1. The DRB-based short QFI in the invention can not only map more QFI stream identifications, but also reduce the bit occupied by QFI in the data unit so as to reduce the overhead of the data unit.

Description

Data mapping configuration method, data transmission method and communication equipment
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a data mapping configuration method, a data transmission method, and a communication device.
Background
In the 5G Protocol stack scheme, a New Protocol layer SDAP (Service Data attachment Protocol, Service Data adaptation Protocol layer) is introduced, and a New AS sublayer shown in fig. 1 is an SDAP layer. The SDAP layer has two basic functions: mapping function between QoS Flow (Quality of Service Flow) and DRB (data resource Bearer); 2. a QoS Flow ID (quality of service Flow identifier, QFI for short) is identified in the uplink and downlink packets.
At present, the bit number reserved for the QFI on the RAN (radio access network) side is 6 bits, while the bit number of the QFI of the core network is at least 7 bits, so that remapping from the core network QFI to the access network QFI is required at the SDAP layer. In addition, the access network QFI is uniquely identified within one SDAP entity, so that only 64 QoS flows can be represented by 6 bits. When each PDU (Protocol data unit) session corresponds to more than 64 QoS flows, the number of the existing 6-bit access network QFI cannot be satisfied.
In addition, the more bits of QFI, the more bits it takes in the PDU.
Disclosure of Invention
In view of this, the present invention provides a data mapping configuration method, a data transmission method and a communication device, which are used to solve the problems that the number of QFIs on the radio access network side is insufficient and the bit number occupied by the QFI carried in each PDU is large.
In order to solve the above technical problem, in a first aspect, the present invention provides a data mapping configuration method, applied to a first communication device, including:
if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, establishing a one-to-one mapping relation between the new QFI and the short QFIs of a first DRB, wherein the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFIs is smaller than the bit number of the QFIs, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs can be the same, and M and N are positive integers greater than or equal to 1.
Preferably, the method further comprises:
and after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established, sending the one-to-one mapping relation to second communication equipment.
Preferably, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Preferably, in the M DRBs corresponding to the SDAP entity, the bit number of the short QFI corresponding to each DRB is equal.
Preferably, the method further comprises:
after the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB is established, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, a second DRB is determined, and the one-to-one mapping relationship between the QFI and the short QFI of the second DRB is established, wherein the second DRB is different from the first DRB.
Preferably, the method further comprises:
and after the one-to-one mapping relation between the QFI and the short QFI of the second DRB is established, sending the one-to-one mapping relation between the QFI and the short QFI of the second DRB to second communication equipment.
In a second aspect, the present invention further provides a data transmission method, applied to a communication device, including:
the data unit of the QoS flow is sent or received through a first DRB, the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer larger than or equal to 1.
Preferably, the bit number of the short QFI is n, and one DRB needs to carry the QoS flowThe maximum number is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Preferably, the short QFI is located at the head or tail of the data unit.
Preferably, when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits or the last n bits of the head of the data unit, and n is a positive integer.
In a third aspect, the present invention further provides a first communication device, including:
the processor is configured to establish a one-to-one mapping relationship between the new QFI and short QFIs of a first DRB if the QFI carried by the data unit of the QoS flow received by the SDAP entity is the new QFI, where the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFI is less than the bit number of the QFI, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs may be the same, and M and N are positive integers greater than or equal to 1.
Preferably, the first communication device further includes:
and the transceiver is used for sending the one-to-one mapping relation to second communication equipment after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established.
Preferably, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Preferably, in the M DRBs corresponding to the SDAP entity, the bit number of the short QFI corresponding to each DRB is equal.
Preferably, the processor is further configured to, after establishing the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB, determine a second DRB if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, and establish the one-to-one mapping relationship between the QFI and the short QFI of the second DRB, where the second DRB is different from the first DRB.
Preferably, the first communication device further includes: a transceiver, configured to send the one-to-one mapping relationship between the QFI and the short QFI of the second DRB to a second communication device after establishing the one-to-one mapping relationship between the QFI and the short QFI of the second DRB.
In a fourth aspect, the present invention further provides a communication device, including:
the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer greater than or equal to 1.
Preferably, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Preferably, the short QFI is located at the head or tail of the data unit.
Preferably, when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits or the last n bits of the head of the data unit, and n is a positive integer.
In a fifth aspect, the present invention also provides a communication device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements any of the above data mapping configuration methods or any of the above data transmission methods when executing the computer program.
In a sixth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of any one of the above-mentioned data mapping configuration methods or any one of the above-mentioned data transmission methods.
The technical scheme of the invention has the following beneficial effects:
the embodiment of the invention provides a DRB-based short QFI, wherein the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the required bit number is less than that of the original QFI, and the problem that the original RAN-side QFI (only 6 bits) cannot be mapped with more than 64 QoS flows one by one is solved. In addition, the embodiment of the invention also establishes a one-to-one mapping relation between the QFI and the short QFI of the DRB, so that each QoS flow can be mapped to the corresponding DRB, and the data unit can be reflected to the corresponding QoS flow after being transmitted to the opposite communication terminal. Because the bit number of the short QFI is less, the bit number occupied by the short QFI in each data unit is less, so that the DRB-based short QFI can map more QoS flows, the overhead of the data unit can be reduced, and the communication resource is saved.
Drawings
FIG. 1 is a functional diagram of layer 2 (including MAC layer, RLC layer, PDCP layer and SDAP layer) in a 5G communication device;
fig. 2 is a flowchart illustrating a data mapping configuration method according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a data transmission method according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a data transmission process between a base station and a terminal according to a second embodiment of the present invention;
FIG. 5 is a diagram illustrating the location of a short QFI in a data unit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first communication device in a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a communication device in a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a communication device in a fifth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a communication device in a sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Referring to fig. 2, fig. 2 is a flowchart illustrating a data mapping configuration method according to an embodiment of the present invention, where the method is applied to a first communication device, and includes the following steps:
step 11: if the QFI carried by a Data unit of a QoS Flow received by an SDAP (Service Data attachment Protocol) entity is a new QFI, establishing a one-to-one mapping relationship between the new QFI and a short QFI (also called as an SDAP Flow ID) of a first DRB, wherein the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFIs is less than that of the QFIs, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs can be the same, and M and N are positive integers greater than or equal to 1. In the embodiment of the present invention, if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, the one-to-one mapping relationship between the new QFI and the short QFI of one DRB needs to be added in the established one-to-one mapping relationship table, that is, the SDAP entity is modified.
The one-to-one mapping relationship between the new QFI and the short QFIs of the first DRB means that the new QFI can only be mapped to a certain short QFI in the first DRB, cannot be mapped to other short QFIs in the first DRB at the same time, and cannot be mapped to short QFIs in other DRBs at the same time; and, the short QFI in the first DRB can only establish a mapping relationship with the new QFI, and cannot establish a mapping relationship with other QFIs at the same time. In addition, the short QFIs of the different DRBs may be the same, which means that two or more DRBs may have one or more same short QFIs, for example, a first short QFI in a first DRB may be the same as a first short QFI in a second DRB, and may also be the same as a second short QFI in a third DRB; for another example, the four short QFIs of the first DRB may all be the same as the four short QFIs of the second DRB, respectively.
One isA communication service, such as a session service, corresponds to one SDAP entity and corresponds to multiple QoS flows, each QoS flow corresponds to one ID (identifier), data of each QoS flow needs to be mapped to a corresponding DRB in the SDAP entity at the transmitting end, and data needs to be reflected to a corresponding QoS flow in the SDAP entity at the receiving end. The existing QFI from the core network is at least 7 bits, while the number of bits reserved for the QFI at the RAN (radio access network) side is only 6 bits, so that the mapping relation between the QFI from the core network and the QFI at the RAN side needs to be established, but the identification of the QoS flow needs to be uniquely identified, so that the number of the QoS flows is more than 64 (2)6) In this case, the number of bits reserved for QFI on the RAN side is not enough.
The embodiment of the invention provides a DRB-based short QFI, wherein the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the required bit number is less than that of the original QFI, and the problem that the original RAN-side QFI (only 6 bits) cannot be mapped with more than 64 QoS flows one by one is solved. In addition, the short QFI is an identifier used inside the SDAP protocol layer (SDAP entity) to identify the QoS flow, and can be recognized only by the SDAP protocol layer.
The embodiment of the invention also establishes the one-to-one mapping relation between the QFI and the short QFI of the DRB, so that each QoS flow can be mapped to the corresponding DRB, and the data unit can be reflected to the corresponding QoS flow after being transmitted to the opposite communication terminal. Because the bit number of the short QFI is less, the bit number occupied by the short QFI in each data unit is less, so that the DRB-based short QFI can not only map more QoS flows, but also reduce the overhead of data units (data packets), thereby saving communication resources.
The data mapping configuration method described above is exemplified below.
Wherein the first communication device is a base station.
The method further comprises the following steps:
and after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established, sending the one-to-one mapping relation to second communication equipment.
In the embodiment of the present invention, after a base station (first communication device) establishes a one-to-one mapping relationship between a QFI and a short QFI, a second communication device needs to be notified, so that the second communication device can perform mapping or inverse mapping between the QFI and the short QFI according to the one-to-one mapping relationship, where the second communication device is a terminal.
Specifically, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Currently, a maximum number of QoS flows corresponding to an SDAP entity is generally several tens, and may be several tens of QoS flows allocated to each DRB, and the short QFI only needs to be able to distinguish each QoS flow in one DRB, so the bit number of the short QFI may be determined according to the maximum number of QoS flows that one DRB needs to carry.
In the embodiment of the present invention, in the M DRBs corresponding to the SDAP entity, the bit number of the short QFI corresponding to each DRB is equal, so that the change of the number of the QoS streams corresponding to the DRBs due to mechanisms such as remapping can be avoided.
Specifically, the method further comprises:
after the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB is established, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, a second DRB is determined, and the one-to-one mapping relationship between the QFI and the short QFI of the second DRB is established, wherein the second DRB is different from the first DRB.
In the embodiment of the present invention, if QoS flows carried by a certain DRB are too much and overloaded, and there are other DRBs with less load, QFIs of a part of QoS flows may be remapped to short QFIs in one DRB (second DRB) with less load, so as to balance the load of each DRB.
In the embodiment of the present invention, the method further includes:
and after the one-to-one mapping relation between the QFI and the short QFI of the second DRB is established, sending the one-to-one mapping relation between the QFI and the short QFI of the second DRB to second communication equipment.
In the embodiment of the present invention, in order to enable the terminal (second communication device) to correctly map data corresponding to the QFI onto a certain DRB or reflect data on a certain DRB onto a corresponding QoS flow, if a mapping object of a certain QFI or a plurality of QFIs is modified, that is, if a QFI is remapped from a certain short QFI in an original DRB (first DRB) to a certain short QFI in another DRB (second DRB), the terminal needs to be notified.
In addition, the method further comprises:
if the mapping from a QoS flow to a DRB needs to be released, the SDAP entity needs to be modified, i.e., the one-to-one mapping relationship between the identifier (QFI) of the QoS flow and the short QFI in the DRB is deleted.
Referring to fig. 3, fig. 3 is a schematic flowchart of a data transmission method according to a second embodiment of the present invention, where the method is applied to a communication device, and includes the following steps:
step 21: the data unit of the QoS flow is sent or received through a first DRB, the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer larger than or equal to 1.
In the embodiment of the invention, the transmitted data unit carries a short QFI based on DRBs, the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the number of bits required by the short QFI is less than that of the original QFI. Therefore, the short QFI occupies less bit number in each data unit, and can reduce the overhead of the data unit (data packet) and further save communication resources.
The communication device may be a base station or a terminal.
The following illustrates a specific procedure of the above data transmission method.
Referring to fig. 4, when a session service is performed between a terminal and a base station, the base station (or the terminal) serving as a transmitting end needs to send service data to the terminal (or the base station) serving as a receiving end, the base station (or the terminal) acquires a data unit carrying QFI, acquires a short QFI of a DRB corresponding to the QFI according to a one-to-one mapping relationship between the QFI and the short QFI of the DRB in an SDAP entity, maps the data unit to the DRB, and finally sends the data unit carrying the short QFI of the DRB (sequentially passing through a PDCP (packet data protocol convergence protocol) layer, an RLC (radio link control) layer, an MAC (media access control) layer, and a physical layer) to the terminal (or the base station) serving as the receiving end by using the DRB. After a terminal (or a base station) serving as a receiving end receives the data unit on the DRB (the DRB identifier is the same as that of the transmitting end), the QFI corresponding to the short QFI of the DRB carried by the data unit is obtained in the SDAP entity according to the one-to-one mapping relationship between the QFI and the short QFI of the DRB, and the data unit is mapped to the QoS flow corresponding to the QFI.
In the embodiment of the invention, the bit number of the short QFI is n, the maximum number of QoS (quality of service) streams required to be loaded by one DRB is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Currently, a maximum number of QoS flows corresponding to an SDAP entity is generally several tens, and may be distributed to each DRB, and the short QFI only needs to be able to distinguish each QoS flow in one DRB, so the bit number of the short QFI can be determined according to the maximum number of bearers required by one DRB.
Specifically, the short QFI is located at the head or tail of the data unit.
Further, when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits (high bits) or the last n bits (low bits) of the head of the data unit, and n is a positive integer. For example, please refer to fig. 5 for a schematic diagram of the short QFI when it is put into the low bit of the header of the data unit, wherein the bit number of the short QFI is 4 (the maximum number of QoS streams required to be carried in one DRB is 16), and the rest bit positions are "R", which are reserved fields. The short QFI in the embodiment of the invention can reduce the overhead of the PDU (data unit) header carrying the short QFI because the bit number of the short QFI is less than that of the original QFI.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a first communication device according to a third embodiment of the present invention, where the first communication device 400 includes:
the processor 401 is configured to, if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, establish a one-to-one mapping relationship between the new QFI and short QFIs of a first DRB, where the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFI is less than the bit number of the QFI, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs may be the same, and M and N are positive integers greater than or equal to 1.
The embodiment of the invention provides a DRB-based short QFI, wherein the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the required bit number is less than that of the original QFI, and the problem that the original RAN-side QFI (only 6 bits) cannot be mapped with more than 64 QoS flows one by one is solved. In addition, the embodiment of the invention also establishes a one-to-one mapping relation between the QFI and the short QFI of the DRB, so that each QoS flow can be mapped to the corresponding DRB, and the data unit can be reflected to the corresponding QoS flow after being transmitted to the opposite communication terminal. Because the bit number of the short QFI is less, the bit number occupied by the short QFI in each data unit is less, so that the DRB-based short QFI can map more QoS flows, the overhead of the data unit can be reduced, and the communication resource is saved.
The first communication device further includes:
and the transceiver is used for sending the one-to-one mapping relation to second communication equipment after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established.
Specifically, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Preferably, in the M DRBs corresponding to the SDAP entity, the bit number of the short QFI corresponding to each DRB is equal.
Optionally, the processor 401 is further configured to, after establishing the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, determine a second DRB, and establish the one-to-one mapping relationship between the QFI and the short QFI of the second DRB, where the second DRB is different from the first DRB.
Further, the first communication device further includes: a transceiver, configured to send the one-to-one mapping relationship between the QFI and the short QFI of the second DRB to a second communication device after establishing the one-to-one mapping relationship between the QFI and the short QFI of the second DRB.
The embodiment of the present invention is an embodiment of an apparatus corresponding to the above method embodiment, and therefore, detailed description thereof is omitted here, and please refer to the first embodiment in detail.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a communication device according to a fourth embodiment of the present invention, where the communication device 500 includes: the transceiver 501 is configured to send or receive a data unit of a QoS flow through a first DRB, where the data unit carries a short QFI, the short QFI is mapped by a QFI of the QoS flow, the first DRB is capable of carrying N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is less than the bit number of the QFI, and N is a positive integer greater than or equal to 1.
In the embodiment of the invention, the transmitted data unit carries a short QFI based on DRBs, the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the number of bits required by the short QFI is less than that of the original QFI. Therefore, the short QFI occupies less bit number in each data unit, the overhead of the data unit can be reduced, and further the communication resource is saved.
Specifically, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to carry is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Optionally, the short QFI is located at the head or tail of the data unit.
Optionally, when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits or the last n bits of the head of the data unit, and n is a positive integer.
The embodiment of the present invention is an embodiment of an apparatus corresponding to the above method embodiment, and therefore, details are not repeated here, and please refer to the second embodiment.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a communication device according to a fifth embodiment of the present invention, where the communication device 600 includes a processor 601, a memory 602, and a computer program stored in the memory 602 and capable of running on the processor 601; the processor 601, when executing the computer program, implements the following steps:
if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, establishing a one-to-one mapping relation between the new QFI and the short QFIs of a first DRB, wherein the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFIs is smaller than the bit number of the QFIs, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs can be the same, and M and N are positive integers greater than or equal to 1.
In the embodiment of the invention, the one-to-one mapping relation between the QFI and the short QFI of the DRB is established, so that each QoS flow can be mapped to the corresponding DRB, and the data unit can be reflected to the corresponding QoS flow after being transmitted to the opposite communication terminal. Because the bit number of the short QFI is less, the bit number occupied by the short QFI in each data unit is less, so that the DRB-based short QFI can not only map more QoS flows, but also reduce the overhead of data units (data packets), thereby saving communication resources.
Optionally, the computer program when executed by the processor 601 may further implement the following steps:
and after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established, sending the one-to-one mapping relation to second communication equipment.
Optionally, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to bear is m, and a value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Optionally, in the M DRBs corresponding to the SDAP entity, the bit number of the short QFI corresponding to each DRB is equal.
Optionally, the computer program when executed by the processor 601 may further implement the following steps:
after the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB is established, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, a second DRB is determined, and the one-to-one mapping relationship between the QFI and the short QFI of the second DRB is established, wherein the second DRB is different from the first DRB.
Optionally, the computer program when executed by the processor 601 may further implement the following steps:
and after the one-to-one mapping relation between the QFI and the short QFI of the second DRB is established, sending the one-to-one mapping relation between the QFI and the short QFI of the second DRB to second communication equipment.
The embodiments of the present invention are device embodiments based on the same inventive concept as the first embodiment, and therefore, detailed descriptions thereof are omitted, and please refer to the first embodiment in detail.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication device according to a sixth embodiment of the present invention, where the communication device 700 includes a processor 701, a memory 702, and a computer program stored in the memory 702 and operable on the processor 701; the processor 701 implements the following steps when executing the computer program:
the data unit of the QoS flow is sent or received through a first DRB, the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer larger than or equal to 1.
In the embodiment of the invention, the transmitted data unit carries a short QFI based on DRBs, the short QFIs in each DRB are different, but the short QFIs among the DRBs can be the same. The QoS flow corresponding to one SDAP entity is shared by multiple DRBs (at most 16 DRBs may be currently available), so that the number of QoS flows shared by each DRB is small, and the short QFI only needs to be used for distinguishing the QoS flows in one DRB, so that the number of bits required by the short QFI is less than that of the original QFI. Therefore, the short QFI occupies less bit number in each data unit, and can reduce the overhead of the data unit (data packet) and further save communication resources.
Optionally, the bit number of the short QFI is n, the maximum number of QoS streams that one DRB needs to bear is m, and a value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
Optionally, the short QFI is located at the head or tail of the data unit.
Optionally, when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits or the last n bits of the head of the data unit, and n is a positive integer.
The embodiments of the present invention are device embodiments based on the same inventive concept as the above embodiments, and therefore, detailed descriptions thereof are omitted, and please refer to the above embodiments.
The seventh embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the data mapping configuration methods described in the first embodiment or the steps of any one of the data transmission methods in the second embodiment. Please refer to the above description of the method steps in the corresponding embodiments.
The first communication device in the embodiment of the present invention may be a Base Transceiver Station (BTS) in Global System for mobile communication (GSM) or Code Division Multiple Access (CDMA), may also be a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), may also be an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, or a relay Station or an Access point, or a Base Station in a future 5G network, and the like, which are not limited herein.
The communication device in the embodiments of the present invention may be the various base stations described above, and may also be a wireless terminal or a wired terminal, where the wireless terminal may be a device that provides voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User agent (User agent), and a Terminal (User Device or User Equipment), which are not limited herein.
Such computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (22)

1. A data mapping configuration method applied to a first communication device is characterized by comprising the following steps:
if the QFI carried by the data unit of the QoS flow received by the SDAP entity is a new QFI, establishing a one-to-one mapping relation between the new QFI and the short QFIs of a first DRB, wherein the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFIs is smaller than the bit number of the QFIs, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs can be the same, and M and N are positive integers greater than or equal to 1.
2. The data mapping configuration method of claim 1, further comprising:
and after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established, sending the one-to-one mapping relation to second communication equipment.
3. The data mapping configuration method of claim 1, wherein the short QFThe bit number of I is n, the maximum number of QoS flows which need to be carried by one DRB is m, and the value of n satisfies 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
4. The data mapping configuration method of claim 1, wherein the short QFI corresponding to each DRB has the same bit number in the M DRBs corresponding to the SDAP entity.
5. The data mapping configuration method of claim 1, further comprising:
after the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB is established, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, a second DRB is determined, and the one-to-one mapping relationship between the QFI and the short QFI of the second DRB is established, wherein the second DRB is different from the first DRB.
6. The data mapping configuration method of claim 5, further comprising:
and after the one-to-one mapping relation between the QFI and the short QFI of the second DRB is established, sending the one-to-one mapping relation between the QFI and the short QFI of the second DRB to second communication equipment.
7. A data transmission method applied to communication equipment is characterized by comprising the following steps:
the data unit of the QoS flow is sent or received through a first DRB, the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer larger than or equal to 1.
8. The data transmission method according to claim 7, wherein the short QFI has a bit number of n, and the maximum number of QoS streams required to be carried by one DRB is nm and n are values satisfying 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
9. The data transmission method of claim 7, wherein the short QFI is located at the head or tail of the data unit.
10. The data transmission method according to claim 9, wherein when the short QFI is located at the head of the data unit, the short QFI is located at the first n bits or the last n bits of the head of the data unit, and n is a positive integer.
11. A first communications device, comprising:
the processor is configured to establish a one-to-one mapping relationship between the new QFI and short QFIs of a first DRB if the QFI carried by the data unit of the QoS flow received by the SDAP entity is the new QFI, where the first DRB corresponds to N short QFIs, the N short QFIs are different, the bit number of the short QFI is less than the bit number of the QFI, the SDAP entity corresponds to M DRBs, the short QFIs of different DRBs may be the same, and M and N are positive integers greater than or equal to 1.
12. The first communications device of claim 11, further comprising:
and the transceiver is used for sending the one-to-one mapping relation to second communication equipment after the one-to-one mapping relation between the new QFI and the short QFI of the first DRB is established.
13. The first communications device of claim 11, wherein the short QFI has a bit number of n, wherein a maximum number of QoS streams that one DRB needs to carry is m, and wherein n is a value satisfying 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
14. The first communications device of claim 11, wherein the short QFI for each DRB has an equal number of bits in the M DRBs corresponding to the SDAP entity.
15. The first communications device of claim 11, wherein the processor is further configured to, after establishing the one-to-one mapping relationship between the new QFI and the short QFI of the first DRB, if the one-to-one mapping relationship between the QFI and the short QFI of the first DRB needs to be modified, determine a second DRB, and establish the one-to-one mapping relationship between the QFI and the short QFI of the second DRB, where the second DRB is different from the first DRB.
16. The first communications device of claim 15, further comprising:
a transceiver, configured to send the one-to-one mapping relationship between the QFI and the short QFI of the second DRB to a second communication device after establishing the one-to-one mapping relationship between the QFI and the short QFI of the second DRB.
17. A communication device, comprising:
the data unit carries a short QFI, the short QFI is obtained by QFI mapping of the QoS flow, the first DRB can bear N QoS flows, the short QFIs of the N QoS flows are different, the bit number of the short QFI is smaller than that of the QFI, and N is a positive integer greater than or equal to 1.
18. The communications device of claim 17, wherein the short QFI has a bit number of n, wherein a maximum number of QoS streams required to be carried by one DRB is m, and wherein n is a value satisfying 2nAnd (b) not less than the minimum value of m, where n and m are positive integers.
19. The communication device of claim 17, wherein the short QFI is located at a head or tail of the data unit.
20. The apparatus of claim 19, wherein the short QFI is located at the first n bits or the last n bits of the header of the data unit when the short QFI is located at the header of the data unit, n being a positive integer.
21. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements the data mapping configuration method according to any of claims 1-6 or the data transmission method according to any of claims 7-10.
22. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the data mapping configuration method according to any one of claims 1 to 6 or the data transmission method according to any one of claims 7 to 10.
CN201811002056.5A 2018-08-30 2018-08-30 Data mapping configuration method, data transmission method and communication equipment Pending CN110876163A (en)

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