CN110536351A - Information processing method, IAB and computer storage medium in IAB network - Google Patents
Information processing method, IAB and computer storage medium in IAB network Download PDFInfo
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- 230000010365 information processing Effects 0.000 title claims abstract description 60
- 238000003860 storage Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000011664 signaling Effects 0.000 claims description 64
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04W28/0289—Congestion control
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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
- H04W28/10—Flow control between communication endpoints
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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Abstract
The embodiment of the present invention provides information processing method, IAB and computer storage medium in a kind of IAB network, passes through the first IAB node and obtains the first data packet；First IAB node sends the forwarding that first data packet realizes data packet to IAB host donor, i.e. the first IAB node；By IAB node transmission flow-control information to father node, the i.e. transmission of flow-control information, and then alleviate the congestion in IAB network；By the configuration of IAB host donor, the resource coordination in IAB network is realized.
Description
Technical field
The present embodiments relate to but be not limited to field of communication technology, in particular to but be not limited to believe in IAB network
Cease processing method, IAB and computer storage medium.
Background technique
5G network is as the 5th third generation mobile communication network, and for peak value theoretical transmission speed up to tens of Gb per second, this compares 4G
Fast hundreds times of the transmission speed of network.Why 5G is able to achieve the use that high transmission speed is millimeter wave.Millimeter wave refers to wave
The electromagnetic wave in millimeter order is grown, frequency is about between 30GHz~300GHz.One characteristic of millimeter wave frequency band be
Decay in air larger, and diffracting power is weaker.For this purpose, from access return link (IAB, integrated access and
Backhaul links) technology is suggested.By wireless return link and repeated link, the intensive NR of the more flexible deployment of energy
Subzone network is without the dense deployment for correspondingly increasing transmission network.Deploy integrated access and
One example of the network of backhaul links is as shown in Figure 1, wherein A, B, C are access nodes.Node A and core net it
Between there are wired connection, access node B and C are by node A to core net sending and receiving data.User equipment can pass through access
Link (access link) access node A, B, C.It can be transmitted by wireless return link backhaul link between access node
Data.In the network of integrated access and backhaul links support UE wireless access and by data into
The access node of row wireless backhaul is known as IAB node (IAB node).And provide wireless backhaul function for IAB node so that
The access node of UE connection and core net is known as IAB host (IAB donor).Access link and backhaul link can make
With identical or different carrier frequency.In addition, supporting CU/DU to be deployed separately is an important technical characteristic in NR, therefore it is also required to
Support IAB function in scene is deployed separately in CU/DU.Fig. 2 is the IAB deployment scenario schematic diagram of CU/DU separation.As shown in Fig. 2,
Wherein IAB node can have DU similar functions and MT similar functions, wherein MT part namely UE similar functions.IAB node passes through
Dual link accesses two father's IAB nodes.
Aiming at the problem that information under IAB scene is transmitted, there is presently no effective solution schemes.
Summary of the invention
Information processing method, IAB computer storage medium, mainly solve in IAB network provided in an embodiment of the present invention
The problem of technical problem is that information transmission how is realized under IAB scene.
In order to solve the above technical problems, the embodiment of the present invention provides information processing method in a kind of IAB network, comprising:
The first data packet is obtained from accessing and returning the first IAB node；
The first IAB node sends first data packet to IAB host donor.
The embodiment of the present invention also provides information processing method in a kind of IAB network, comprising: IAB node sends flow-control information
To father node.The IAB node is known as father's IAB node to connect the IAB node that identity is accessed
The embodiment of the present invention also provides information processing method in a kind of IAB network, including following one:
IAB host donor CU sends downlink information to IAB host donor DU；
IAB host donor CU sends downlink information to IAB node；
Father IAB node converting downlink information is to IAB node；
The downlink information message includes RRC information or F1AP message.
The embodiment of the present invention also provides information processing method in a kind of IAB network, including from access return link IAB node
Information is sent to the next-hop IAB node of the IAB node.
The embodiment of the present invention also provides a kind of IAB, which is characterized in that the IAB includes that processor, memory and communication are total
Line, in which:
Communication bus is for realizing the connection communication between processor and memory；
Processor is for executing one or more computer program stored in memory, to realize IAB as described above
At least one step in network in information processing method.
The embodiment of the present invention also provides a kind of computer storage medium, the computer storage medium be stored with one or
Multiple programs, one or more of programs can be executed by one or more processor, to realize IAB network as described above
At least one step in middle information processing method.
The beneficial effects of the present invention are:
Information processing method, IAB and computer storage medium in the IAB network provided according to embodiments of the present invention are led to
It crosses the first IAB node and obtains the first data packet；First IAB node sends first data packet to IAB host donor, i.e., and the
One IAB node realizes the forwarding of data packet；Flow-control information is sent to father node, the i.e. transmission of flow-control information by IAB node,
And then alleviate the congestion in IAB network；IAB host donor CU sends downlink information to IAB host donor DU；IAB host
Donor CU sends downlink information to IAB node；Father IAB node converting downlink information is to IAB node；The downlink information message
Including RRC information or F1AP message；It realizes the transmission by downlink information, realizes the resource coordination in IAB network.
Other features of the invention and corresponding beneficial effect are described in the aft section of specification, and should be managed
Solution, at least partly beneficial effect is apparent from from the record in description of the invention.
Detailed description of the invention
The network signal that Fig. 1 is the integrated access and backhaul links of background of invention
Figure；
Fig. 2 is the IAB deployment scenario schematic diagram that the iCU/DU of background of invention is separated；
Fig. 3 is the flow diagram of information processing method in the IAB network of the embodiment of the present invention one；
Fig. 4 is the schematic diagram of the CP protocol stack design of the alternative 2 of the embodiment of the present invention five；
Fig. 5 is the upstream control signaling forward process schematic diagram of the embodiment of the present invention five；
Fig. 6 is the descending control signaling forward process of the embodiment of the present invention five；
Fig. 7 is the schematic diagram of the CP protocol stack design of the alternative 4 of the embodiment of the present invention six；
Fig. 8 is the upstream control signaling forward process schematic diagram of the embodiment of the present invention six；
Fig. 9 is the descending control signaling forward process of the embodiment of the present invention six；
Figure 10 is the schematic diagram of the hop-by-hop flow control of the embodiment of the present invention eight；
Figure 11 is that the carrying between the terminal carrying of the embodiment of the present invention eight and backhaul BH RLC carrying maps schematic diagram；
Figure 12 is that the carrying between the backhaul BH RLC carrying of the embodiment of the present invention eight maps schematic diagram；
Figure 13 is the IAB handoff scenario schematic diagram of the embodiment of the present invention ten；
Figure 14 is the IAB structural schematic diagram of the embodiment of the present invention 11.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by specific embodiment knot
Attached drawing is closed to be described in further detail the embodiment of the present invention.It should be appreciated that specific embodiment described herein is only used to
It explains the present invention, is not intended to limit the present invention.
Embodiment one:
In order to solve the transmission of IAB contextual data packet, the present embodiment provides information processing methods in a kind of IAB network, such as
Shown in Fig. 3, information processing method includes: in the IAB network
S301, the first data packet is obtained from access and the first IAB node of passback.
In embodiments of the present invention, the first IAB node obtains the first data packet, which can be the first IAB
Node receives the RRC information that UE is sent or the RRC information that the first itself MT of IAB node is generated or the first IAB node itself DU
The F1AP message of generation.
It is worth noting that, can also be the first data packet addition adaptation after the first IAB node obtains the first data packet
Layer packet header, which includes at least one of following information: destination node information；IAB node identification information；IAB
Node generates and/or the control signaling of forwarding/data carry flag information；The affiliated control plane load identification of first data packet.Example
The addition of for example the first data packet includes the adaptation layer packet header that destination node is IAB donor；In another example being added for the first data packet
Signaling including the forwarding of IAB node carries the adaptation layer packet header of flag information.
S302, the first IAB node send first data packet to IAB host donor.
It is understood that the first IAB node can directly be connect with IAB donor, it can also be by among other
IAB node is connected to IAB donor.Therefore the first IAB node can directly transmit first data packet to IAB host
donor；First data packet that first IAB node is sent is forwarded to IAB host by one or more intermediate nodes
After donor, such as the first data packet of acquisition of IAB node 1, IAB host donor is forwarded to by IAB node 2, IAB node 3.
In embodiments of the present invention, after IAB host donor receives the first data packet that IAB node is sent, IAB host
First data envelope can also be attached to F1AP message by donor, which includes: packaged PDCP PDU corresponding
IAB node identification and load identification information.
Embodiment two:
When entry data rate on IAB node is greater than outlet data rate, the buffer overflow that will lead to, so that
There is congestion in IAB network, in order to solve the problems, such as the flow control, the present embodiment provides information processing method in a kind of IAB network,
Information processing method includes in the IAB network
First IAB node sends flow-control information to father node.
In embodiments of the present invention, the IAB node is known as father's IAB node to connect the IAB node that identity is accessed.Stream
Controlling information includes at least one of following information: one or more load identifications；One or more Logic Channel Identifiers；User
The node identification information of equipment UE mark or IAB node；The cache size desired buffer size information needed；It needs
Data rate desired data rate information；Flow control instruction.It is understood that the first IAB node sends flow control letter
Breath can be the flow-control information corresponding to IAB node, be also possible to the flow-control information of relative user equipment UE.
The cache size desired buffer size information wherein needed, including at least one of: the carrying of UE or
The cache size desired buffer size of the corresponding needs of logic channel；The carrying of the IAB node or logic channel pair
The cache size for the needs answered；The data rate desired data rate information needed, including at least one of: UE's
The data rate desired data rate of carrying or the corresponding needs of logic channel；The carrying of the IAB node or logic letter
The corresponding data rate desired data rate in road.
Embodiment three:
In order to realize the resource coordination of IAB, the present embodiment provides information processing method in a kind of IAB network, the IAB networks
Middle information processing method includes:
IAB host donor CU sends downlink information to IAB host donor DU；
Or, IAB host donor CU sends downlink information to IAB node；
Or, father IAB node converting downlink information is to IAB node.
Wherein downlink information message is RRC information or F1AP message.
In embodiments of the present invention, IAB host donor DU and IAB node can be directly connected to, and be also possible to pass through it
His intermediate IAB node is connected to IAB node, therefore when IAB host donor CU sends downlink information to IAB node, can be with
It is that IAB host donor CU sends downlink information to IAB host donor DU, institute is forwarded by the IAB host donor DU
Downlink information is stated to the IAB node；It is also possible to IAB host donor CU and sends downlink information to IAB host donor DU,
The IAB host donor DU, to next-hop node, passes through the next-hop by downlink information described in a jump or multi-hop transmission
Node converting downlink information is to the IAB node.
It is worth noting that, when downlink information includes F1AP message, after IAB host donor CU generates F1AP message,
F1AP message is sent to IAB node；The F1AP message includes at least one of following information: destination node information；F1AP message institute
Belong to control plane load identification information；IAB host's donor DU configuration information；IAB node DU configuration information.
Wherein IAB donor DU configuration information includes: that IAB host donor DU receives IP address and IAB node DU mark
The mapping relationship of knowledge just can be carried out the encapsulation of corresponding adapt layer, therefore IAB host donor DU can according to IP
Location obtains IAB node DU mark, and then downlink information is sent to IAB node；Or, the road of the IAB host donor DU
By table include the mapping relationship of purpose IP address and next-hop IAB node identification, and then downlink information can be sent to pair
The IAB node answered.
In embodiments of the present invention, IAB node DU configuration information includes: each sign resources corresponding to IAB node DU
Corresponding D-H, D-S, U-H, U-S, F-H, F-S, not available instruction, the IAB node DU configuration information can be used for DU
Determine the uplink and downlink resource distribution on child BH link and child access link.
In some embodiments, after father IAB node converting downlink information to IAB node, which is institute
Downlink information addition adaptation layer packet header is stated, includes: MT termination message in the adaptation layer packet header.
It is worth noting that, the IAB host donor CU generates RRC information when downlink information includes RRC information, it will
IAB node is sent to after the RRC information, which includes at least one of following information: the semi-static frame of the IAB node
Structure, the frame structure configuration for example including cell-specific and UE-specific；The semi-persistent resource of the IAB node
Configuration, such as 21 and of for DL, type of type, 2 for UL；The semi-static frame structure of terminal UE, for example including cell-
The frame structure of specific and UE-specific configures and carries out semi-persistent resource configuration；And then IAB host donor CU
IAB node resource is coordinated by the RRC information.
Example IV
Information processing method in a kind of IAB network provided in an embodiment of the present invention, information processing method packet in the IAB network
It includes:
IAB node sends information to the next-hop IAB node of the IAB node.
In embodiments of the present invention, IAB node include terminal UE, IAB node DU, IAB node MT, IAB child node,
IAB node, IAB father node, any one in IAB host donor, such as when uplink information is sent, when IAB node includes
When IAB, next-hop node is IAB host donor；In another example when downlink information is sent, when IAB node includes IAB father node
When, next-hop node is IAB node, such as IAB node sends information to IAB host donor；In another example IAB host donor
Send information to IAB node.
In embodiments of the present invention, according to the difference of information, next-hop IAB node of the IAB node to the IAB node
It is also different to send information.When information includes that IAB is generated and/or the upstream message of forwarding (such as ascending control information or upper line number
According to) flag information is carried, which generates and/or the upstream message of forwarding carrying flag information includes: the adaptive of IAB node
Carried in subheader whether be MT signaling instruction information, and/or, if be the instruction information of transmitting signaling；It is understood that
When including the instruction information of MT signaling, indicate that upstream control signaling/upstream data is that IAB is generated；When including transmitting signaling
Instruction information when, indicate upstream control signaling/upstream data be that IAB forwards other IAB.What the IAB was generated and/or was forwarded
Upstream message carries the control signaling that encapsulation is carried in the adaptive subheader that flag information can also include: next-hop IAB node
The identification information of the corresponding IAB node and SRB.Such as IAB1 sends the first information to IAB2, which includes being
No is the instruction information of MT signaling, and/or, if it is the instruction information of transmitting signaling；IAB2 sends the second information to IAB3, should
Second information includes the corresponding IAB node of control signaling of encapsulation and the identification information of SRB.In some embodiments
The identification information of IAB node and SRB include at least one of: gNB-CU UE F1AP ID, gNB-DU UE F1AP ID, MT
C-RNTI and NCGI, SRB id information.
In some embodiments, the IAB node includes IAB donor, and information includes under IAB is generated and/or forwarded
Row message carries flag information；IAB is generated and/or the downstream message of forwarding carrying flag information includes that IAB donor CU exists
The corresponding SRB mark of its embedded F1AP message and IAB node identification are carried in F1AP message；The IAB node identification packet
Include IAB node DU mark or collocated IAB node MT mark；It is understood that F1AP layers refer to donor DU
The F1AP of F1-C interface between donor CU, and then IAB donor DU receives the F1AP message of IAB donor CU transmission,
After IAB donor DU receives the F1AP message, the IAB node identification and SRB mark that inside includes are parsed；In
The IAB node identification and SRB mark are encapsulated in adaptive subheader, and the F1AP message is transmitted to next-hop IAB section
Point.After i.e. IAB donor DU receives F1AP message, route forwarding function is realized according to SRB mark and IAB node identification, is turned
It is dealt into next-hop IAB node.
It is worth noting that, the IAB node identification and SRB mark are encapsulated in adaptive subheader, it will be described
F1AP message is transmitted to after next-hop IAB node, after next-hop AB node receives the data packet of IAB donor DU transmission, really
Determine IAB node identification and itself it is inconsistent when, RRC information that next-hop IAB node will include in the F1AP message that parsed
It is delivered to adaptation layer；In some embodiments, next-hop IAB node is disappeared the RRC for including in the F1AP message parsed
Breath is delivered to after adaptation layer, and next-hop IAB node adds MT in adaptation layer subheader and terminates instruction.In some embodiments,
When target IAB node identification information is consistent with oneself, then the upstream data packet that the IAB is generated and/or forwarded is delivered to
The SRB of adapt instruction carries out PDCP decryption, is delivered to the F1AP entity of corresponding IAB node2 DU later to F1AP message content
It is parsed.
In embodiments of the present invention, which can also be flow-control information, for alleviating the congestion in IAB network；Wherein
The flow-control information includes: terminal UE carrying or the corresponding LCID of the IAB node, desired buffer size and/or data
rate；After IAB node sends information to the next-hop IAB node of the IAB node at this time, next-hop IAB node receives institute
Flow-control information is stated, determines that residual buffer area size desired buffer size value is 0, stops the number for dispatching the logic channel
According to；And/or determine that size desired buffer size in residual buffer area is greater than 0, for RLC AM mode from TX_Next_
Ack-1 calculates total amount of data；For RLC UM mode, calculated according to the data volume of transmission to be dispatched.
In some embodiments, flow-control information includes that whether adaptation layer carries with the presence of flow-control information, or directly indicates
Whether with the presence of desire data rate and/or whether desired buffer size is had.At this time, it is notable that
IAB node to the next-hop IAB node of the IAB node send information include the flow-control information IAB nodal test to certain
After the buffer of a UE carrying or backhaul BH RLC channel exceed given thresholding, down hop IAB node sends needs
Cache size desired data rate；Or, buffer of the IAB nodal test to corresponding backhaul BH RLC channel
Size is less than given thresholding, and down hop IAB node sends flow control and stops instruction；Or, IAB nodal test is to corresponding backhaul BH
The buffer size of RLC channel is less than given thresholding, by desired buffer size or desired data rate
It is set as maximum permissible value.
In some embodiments, flow-control information includes the desired buffer of terminal carrying or backhaul BH RLC carrying
Size and/or desired data rate；In some embodiments, flow-control information includes that terminal is held in addition to including flow-control information
It can also include eventually outside the desired buffer size and/or desired data rate that load or backhaul BH RLC are carried
Hold identification information, such as UE and DRB identification information.
In some embodiments, IAB node know terminal carrying backhaul BH RLC carrying transmission downlink data with institute
When stating the ratio of the BH RLC bearer overall transfer data volume of terminal mapping, flow-control information includes desired buffer
The quotient or desired data rate of the ratio of size and transmitted data amount withdThe quotient of esired data rate.Some
In embodiment flow-control information include it is all be mapped to BH RLC bearer terminals carrying desired buffer size or
The sum of desired data rate.
Embodiment five:
In the embodiment of the present invention, with the CP protocol stack design based on alternative 2, IAB node generates itself
Data packet and the data of forwarding all carry out under adaptation disposition, carry information in F1AP message and adapt subheader
For be illustrated, IAB network-control signal processing method is illustrated；As shown in figure 4, Fig. 4 is alternative's 2
The schematic diagram of CP protocol stack design, Fig. 4 (a) indicate that the RRC information of UE sends treatment process, and Fig. 4 (b) indicates the RRC information of MT
Processing processing is sent, Fig. 4 (c) indicates the treatment process of the F1-AP of DU.It is understood that if IAB node 1MT part is produced
Raw RRC information executes adaptive adapt layer processing, then the RRC signaling of MT can be answered with the signaling forwarded of IAB node 1
It is transmitted with identical SRB, is based on above-mentioned alternative 2, when IAB node executes the data packet itself generated
When adapt layer processing, upstream control signaling forward process is as shown in Figure 5:
S501, IAB node 2MT part adapt layer subheader in carry for distinguish control signaling instruction believe
Breath.
In embodiments of the present invention, IAB node 1 is capable of handling the control that IAB node 2 is sent from Fig. 4 (a) and Fig. 4 (b)
Signaling processed is used for area by carrying in adapt layer to allow IAB node 1 to distinguish the signaling of two different types
Whether the instruction information for dividing control signaling carries upstream data packet in adapt layer subheader for each upstream data packet
The instruction information of MT signaling, or whether be transmitting signaling instruction, allow IAB node 1 to distinguish processing.Such as
IAB node 1 receives the upstream data packet 1 of IAB node 2, the adapt layer subheader of IAB node 2MT part
In comprising the upstream data packet 1 be MT signaling instruction, then it represents that the upstream data packet 1 be IAB node 2 itself generate number
According to；Similarly, when the instruction in adapt layer subheader comprising the upstream data packet 1 being transmitting signaling, the upstream data packet is indicated
1 is the data packet for the UE that IAB node 2 is forwarded.
The corresponding IAB node MT's and SRB of F1AP message carrying inner PDCP PDU of S502, IAB donor CU
Identification information.
In embodiments of the present invention, for IAB donor CU-CP, in order to which the PDCP PDU of internal layer in F1AP message is thrown
Correct PDCP entity is passed, wherein the F1AP layers of F1AP for referring to F1-C interface between donor DU and donor CU, F1AP disappear
Breath carries the identification information of the corresponding IAB node MT and SRB of inner PDCP PDU.It should be understood that Donor DU can
To obtain the identification information of the IAB node and SRB by adapt layer, i.e. Donor DU obtains the IAB node and SRB
Identification information, and carried in F1AP message, issue IAB donor CU-CP.
It is worth noting that, the identification information of IAB node and SRB include following one of any:
GNB-CU UE F1AP ID2, the gNB-DU UE of the MT 2 carried in 2 adapt layer of IAB node
The corresponding SRB id information of F1AP ID2 and inner PDCP PDU；
The IAB node DU collocated of the creation F1AP message carried in 2 adapt layer of IAB node
IAB node MT the corresponding SRB id information of C-RNTI+NCGI and inner PDCP PDU.
Upstream data packet is delivered to corresponding F1AP entity by S503, IAB donor CU.
In embodiments of the present invention, upstream data packet can be delivered to corresponding F1AP entity, i.e. basis by step 502
Upstream data packet is delivered to F1AP entity by the information carried in F1AP message.In initial F1 interface establishment stage, IAB donor
CU needs to associate IAB node 2DU with IAB node 2MT part, therefore asks in F1 setup request foundation
It asks in addition to carrying gNB DU ID in message, can also include IAB node 2MT part corresponding C-RNTI and corresponding NR
CGI information.In some embodiments, it is carried in the RRC signaling that IAB node 2MT part is sent to IAB donor CU
The gNB DU ID of collocated.
Based on alternative 2, when IAB node executes adapt layer processing to the data packet itself generated,
Descending control signaling forward process is as shown in Figure 6:
S601, IAB donor CU produce plan be sent to the control signaling of IAB node2DU after, judge need should
Which SRB of control signaling mapping collocated IAB node 2MT is forwarded.
S602, IAB donor CU, which are delivered to collocated IAB node 2MT and correspond to the PDCP entity of SRB, to be added
It is close.
PDCP PDU mapping is delivered between IAB donor CU and IAB donor DU by S603, IAB donor CU
F1-C interface carries out F1AP encapsulation, and the corresponding SRB mark of its embedded F1AP message and IAB are carried in F1AP message
Node mark.
In embodiments of the present invention, IAB node mark can be IAB node DU mark, be also possible to corresponding IAB
Node MT mark.
After S604, IAB donor DU receive the F1AP signaling, IAB node mark that inside includes and right is parsed
The SRB mark answered.
In embodiments of the present invention, IAB node is identified the subsequent of dissection process and corresponding SRB by IAB donor
Mark is included in adapt header, is used for route forwarding function；That is the letter that IAB donor is carried according to adapt header
Breath, sends IAB node 2MT for F1AP signaling.It should be noted that the transmission success in order to guarantee F1AP signaling, adapt
The identity type information needs that layer is carried are consistent with routing table.
S605, after IAB node 2MT receives the F1AP signaling, the IAB node for including according to adapt layer is marked
Know, determines different treatment processes.
It is worth noting that, then should when the target IAB node identification information that adapt layer includes is consistent with oneself
The SRB that F1AP signaling is delivered to adapt instruction carries out PDCP decryption, is delivered to the F1AP entity of corresponding IAB node2DU later
F1AP message content is parsed.
When the target IAB node identification information that adapt layer includes is inconsistent with oneself, IAB node DU will be parsed
The RRC information for including in F1AP message out is delivered to adapt layer, i.e., continues RRC information to be delivered to IAB
Node2, and increase new adapt layer, adapt header need to only indicate whether the message is MT at this time
Terminated no longer needs to carry other routing iinformations.
It should be noted that whether using the IAB node CP protocol stack of alternative 2, can be matched by operator
It sets.Such as when IAB node DU establishes F1 with IAB donor CU and connect, IAB node DU gets PDCP from operator
When based security instruction configuration, using alternative 2.In some embodiments, it is also contemplated that IAB node
DU reports PDCP and/or DTLS based security ability to indicate to CU, and then determines whether using alternative 2.
Embodiment six:
In the embodiment of the present invention, with the CP protocol stack design based on alternative 4, IAB node generates itself
Data packet and the data of forwarding all carry out under adaptation disposition, carry information in F1AP message and adapt subheader
For, IAB network-control signal processing method is illustrated；As shown in fig. 7, Fig. 7 is the CP protocol stack of alternative 4
The schematic diagram of design, Fig. 7 (a) indicate that the RRC information of UE sends treatment process, and Fig. 7 (b) indicates the RRC information transmission processing of MT
Processing, Fig. 7 (c) indicate the treatment process of the F1-AP of DU.It is understood that if the RRC that IAB node 1MT part is generated
Message execute adapt layer processing, then the RRC signaling of MT SRB identical with the signaling reusable that IAB node 1 is forwarded into
Row transmission, is based on above-mentioned alternative 4, when IAB node executes adapt layer processing to the data packet itself generated
When, upstream control signaling forward process is as shown in Figure 8:
S801, IAB node 2MT part adapt layer subheader in carry for distinguish control signaling instruction believe
Breath.
In embodiments of the present invention, for each upstream data packet, adapt layer of IAB node 2MT part
It needs in head comprising an instruction, informing whether IAB node1 by upstream data packet is delivered to F1AP layer, or executes and turn
Hair operation.The instruction information include upstream data packet whether be MT signaling instruction, or whether be transmitting signaling instruction.When
When adapt layer includes the instruction of transmitting signaling, indicate that the upstream data packet is the upstream data of IAB node2 forwarding UE
Packet executes forwarding operation；When adapt layer includes the instruction of MT signaling, indicate the upstream data packet be IAB node2 from
The upstream data packet that body generates, is delivered to F1AP layer.
Target DU information is added to adapt header. by S802, IAB node1
In embodiments of the present invention, IAB node1 uplink complete F1AP message encapsulation, DTLS, SCTP, IP and
Adapt encapsulation, the adapt may include target DU information (such as indicating some donor DU, such as the donor DU in Fig. 7).
In some embodiments, target DU identification information is that access IAB node is configured when configuring routing table by donor CU；It can
To carry corresponding one or more target donor DU identification informations in adapt.
S803, IAB donor DU receive upstream data packet, determine in adapt header target DU information and oneself one
It causes, then removes adapt header, upstream data packet is sent to IAB donor CU later.
S804, after IAB donor CU receives the upstream data packet, it is parsed, when being resolved to F1AP message
Afterwards, corresponding IAB node is confirmed according to gNB-CU UE F1AP ID, gNB-DU the UE F1AP ID for including in F1AP message
DU, and perform corresponding processing.
In embodiments of the present invention, in initial F1 interface establishment stage, IAB donor CU need by IAB node DU with
IAB node MT part associates, and it can be considered to IAB DU is carried in F1 setup request message
The corresponding NR CGI of cell of status instruction and C-RNTI and the MT access of corresponding MT.In some embodiments, In
IAB node 2MT part is sent to the gNB DU ID that collocated is carried in the RRC signaling of IAB donor CU.
In some embodiments, it is based on alternative 4, IAB node DU can be directly in the F1setup of transmission
The corresponding NR of cell of IAB DU status instruction and C-RNTI and the MT access of corresponding MT is carried in request
CGI.In addition to carrying the information in F1AP message, it is also contemplated that be sent to IAB donor in IAB node 2MT part
The gNB DU ID of collocated is carried in the RRC signaling of CU.
Based on alternative 4, when IAB node executes adapt layer processing to the data packet itself generated,
Descending control signaling forward process is as shown in Figure 9:
S901, IAB donor CU produce plan be sent to the control signaling of intermediate IAB node DU after, generate correspond to
F1AP message, carry out STLS, SCTP, IP encapsulation, then by IP route be sent to IAB donor DU.
It is understood that IAB donor CU before received IAB donor DU forwarding correspond to intermediate IAB
Node DU is the data packet of source IP, therefore IP route table can record corresponding reverse routing iinformation accordingly.
After S902, IAB donor DU receive the IP data packet, respective handling is carried out.
In embodiments of the present invention, IAB donor DU according to IP route in IP address obtain destination IAB
Node DU mark, and it is encapsulated in adapt header, wherein IAB donor DU has been configured IP address and IAB
The mapping relationship of node DU mark.
In some embodiments, the routing table of IAB donor DU includes destination IP address and next hop
The control signaling is sent to down by the mapping relationship of IAB node DU/MT ID, IAB donor DU according to IP address information
The one IAB node jumped, until being forwarded to IP address and the consistent IAB node DU of destination IP address.
It should be noted that whether using the IAB node CP protocol stack of alternative 4, can be matched by operator
It sets.Such as when IAB node DU establishes F1 with IAB donor CU and connect, IAB node DU gets DTLS from operator
When based security instruction configuration, using alternative 4.In some embodiments, it is also contemplated that IAB node
DU reports PDCP and/or DTLS based security ability to indicate to CU, and then determines whether using alternative 4.
Embodiment seven
In embodiments of the present invention, with there are the congestions of long term in IAB network link, which is gathered around
It fills in for row alleviation, is illustrated.
It is worth noting that, the mitigation scheme that IAB network can be taken includes following any for the congestion of long term
One of:
Mode one: DU sends flow-control information to CU to alleviate congestion.The flow-control information includes instruction CU overload；It can
With understanding, CU is UE when creating new DRB, and DU will do it admission control, the carrying for having received and corresponding
Data transmission, when, there are when congestion, DU can indicate that its overload, CU use overload accordingly to CU in IAB link
The operation of reduction action off-load；In some embodiments, which includes that DU request discharges some UE
Context, i.e. DU, which can also detect which current GBR bearer, to be unable to satisfy demand and informs CU, finally, DU can be actively
Discharge the context etc. of some UE.In some embodiments, which includes informing that some DRB of CU is unable to satisfy QoS
When demand, i.e. DU carry out admission control, if interface-free resources are unable to satisfy requirement, DU can directly inform which DRB of CU can not
It successfully creates.
Mode two: CU sends following flow control signaling to NGC to alleviate congestion.As radio resource unavailable
When (radio resource is unavailable), which includes the context that CU request discharges some UE；In some embodiments, the stream
Control signaling includes that CU sends PDU session resource notify, and notice NGC is unable to satisfy some GBR QoS flow/
The QoS demand of PDU session, in some instances it may even be possible to need to discharge；In some embodiments, which includes CU request modification
Some PDU session having built up.
Mode three: congestion is alleviated according to the long term congestion situation adjustment network topology in current IAB net.At this
In inventive embodiments, CU is reported according to measurement and DU overload instruction, and certain IAB node MT are switched to other
parent DU；In some embodiments, when routing includes cost information cost metric, then the design of cost metric can
To embody congestion, to embody potential time delay；Such as the lesser path cost metric, congestion are less；Therefore IAB node
When transmitting data, the lesser path cost metric is selected for IAB node, is equivalent to the path for having selected congestion less, from
And achieve the effect that load balancing.
Embodiment eight:
In embodiments of the present invention, with there are the congestions of short term in IAB network link, to the short term's
For congestion is alleviated, specifically it is illustrated by taking hop-by-hop flow control as an example, as shown in Figure 10, Tu10Wei
The schematic diagram of hop-by-hop flow control.It is understood that typically occurring in certain for short term congestion
On one forward-path jumped, far less likely to occur entire forward-path all congestion the case where, and hop by hop flow
Control is more suitable for handling short term congestion for the flow-control information between intermediate IAB node in a jump range.
It should be understood that hop-by-hop flow control includes 1:1 carrying mapping mechanism and N:1 carrying mapping
Mechanism.At this point, when using 1:1 carrying mapping mechanism, for the congestion of short term, alleviation side that IAB network can be taken
Case includes following one of any:
One: UE bearer of mode sends flow-control information to its parent IAB by MAC CE, and distributes for the MAC CE
One special LCID.In embodiments of the present invention, which indicates flow-control information.Include and the UE in MAC CE
The corresponding LCID corresponding with parent IAB link of bearer, desired buffer size and/or data rate.
In embodiments of the present invention, which can detect some DRB or BH RLC in IAB node DU
The buffer of channel, which exceeds after given thresholding, to be retransmited desired buffer size, parent IAB and receives the flow control
After information, resource is distributed for LCID.It is worth noting that, according to the difference of desired buffer size value, parent IAB
The mode for distributing resource is different.Such as desired buffer size value is 0, then parent IAB node DU stops scheduling
The data of the logic channel；If desired buffer size is greater than 0, for RLC AM mode from TX_Next_Ack-1
Calculate total amount of data；For RLC UM mode, then calculated according to the data volume of transmission to be dispatched.
In some embodiments, if IAB node DU detects the buffer size of corresponding BH RLC channel
Less than given thresholding, then indicate that flow control stops by the LCID in flow-control information；Or, IAB node DU is by desired
Buffer size or desired data rate is set as maximum permissible value.It certainly in some embodiments, can be with IAB
When node no longer needs to carry out flow control, indicate that flow control stops by LCID.
Two: IAB node of mode sends the adapt layer for carrying flow control relevant information to parent IAB node DU.
In embodiments of the present invention, IAB node can send flow-control information by adaptation layer.IAB node to be forwarded gives at some
Increase an adapt layer in the data packet of the corresponding carrying of parent IAB node DU and controls information, the adapt
Layer controls information and only just adds when carrying out flow control instruction, it is notable that needs to increase in the adapt layer
Whether one bit indicates whether that flow-control information exists, or directly indicate whether desire data rate and/or have
Desired buffer size exists.It should be understood that after Parent IAB node DU parses flow-control information, need by
It is submitted to MAC layer for auxiliary dispatching decision.It is worth noting that, the transmission of flow-control information specifically includes following manner:
Mode one: the flow-control information detects that the buffer of some DRB or BH RLC channel is super in IAB node DU
Desired buffer size is retransmited after giving thresholding out, if desired buffer size is 0, parent IAB
Node is stopped on the RLC channel and is sent data.Otherwise it is sent according to the buffer size of regulation.
Two: IAB node DU of mode detects that the buffer size of corresponding BH RLC channel is less than given door
Limit then sends flow control and stops instruction.
Three: IAB node DU of mode detects that the buffer size of corresponding BH RLC channel is less than given door
Limit, sets maximum permissible value for buffer size, sends desired data rate to parent node.In some realities
It applies in example, when no longer needing to carry out flow control, sends flow control termination instruction.
It should be understood that it includes that the carrying between terminal carrying and backhaul BH RLC carrying is reflected that N:1, which carries mapping mechanism,
It penetrates；And the carrying mapping between BH RLC carrying, when using the carrying mapping between terminal carrying and backhaul BH RLC carrying
When, as shown in figure 11, UE1 DRB1 and UE2 DRB1 are mapped to BH RLC bearer 1, and UE1 DRB2 is mapped to BH RLC
Bearer 2, at this point for the congestion of short term, mitigation scheme that IAB network can be taken includes following one of any:
The flow-control information that one: IAB node 1MT of mode is sent to IAB node 2DU, the flow-control information correspond to UE1
The desired buffer size and/or desired data rate of DRB1.It is worth noting that, the flow-control information passes through BH
The corresponding adapt of RLC bearer1 is sent or instruction corresponds to BH RLC bearer1 in MAC CE.
The flow-control information that two: IAB node 1MT of mode is sent to IAB node 2DU, when IAB node 2DU knows BH
Corresponding UE bearer information in each data packet in the buffer area RLC of RLC bearer 1 is flowed when IAB node 1MT is sent
When controlling desired buffer size and/or desired data rate of the information corresponding to UE1 DRB1, furthermore flow control is believed
Breath further includes UE 1 and DRB identification information, then the flow-control information can be sent by the corresponding adapt of BH RLC bearer1 or
It is that instruction corresponds to BH RLC bearer 1 in MAC CE.
When IAB node 2DU receives the information, judgement corresponding to UE1 DRB1 can dispatch transmission data volume by
Desired buffer size or desired data rate is determined.
Mode three: when IAB node 1DU can perceive the downlink data by 1 DRB1 of UE transmission in BH RLC bearer
The ratio (x%) of 1 overall transfer data volume, the then stream that IAB node 1MT IAB node 1MT is sent to IAB node 2DU
Information is controlled, which includes the quotient or desired data of the ratio of desired buffer size and transmitted data amount
Rate withdThe quotient of esired data rate.
Mode four: if congestion occurs in some UE DRB, IAB node 1MT statistics is all to be mapped to BH RLC
The sum of desired buffer size/desired data rate of the UE DRB of bearer is sent to IAB node 2DU
Flow-control information, which includes the desired buffer size of all UE DRB for being mapped to BH RLC bearer
Or the sum of desired data rate.
It is worth noting that, in embodiments of the present invention, when using the bearer mapping between BH RLC bearer
When, as shown in figure 12, BH RLC bearer 3 and BH RLC bearer 5 are mapped to BH RLC bearer 1, and BH RLC
Bearer 4 is mapped to BH RLC bearer 2, at this point for the congestion of short term, alleviation side that IAB network can be taken
Case includes following one of any:
The flow-control information that one: IAB node 2MT of mode is sent to IAB node 3DU, the flow-control information correspond to BH
When desired buffer size and/or desired the data rate of RLC bearer 3, which can pass through
The corresponding adapt of BH RLC bearer1 is sent, or instruction corresponds to BH RLC bearer 1 in MAC CE.
Mode two: when in the buffer area RLC that IAB node 3DU knows BH RLC bearer 1 in each data packet it is corresponding
UE bearer information, the flow-control information that IAB node 2MT is sent to IAB node 3DU, the flow-control information correspond to BH
When desired buffer size and/or desired the data rate of RLC bearer 3, furthermore flow-control information further includes reflecting
It is mapped to one or more UE bearer identification informations of BH RLC bearer 3.Then flow-control information can pass through BH RLC
The corresponding adapt of bearer1 is sent, or instruction corresponds to BH RLC bearer 1 in MAC CE.In some embodiments
In, instruction can also be reported by RRC signaling.
When IAB node 3DU receives the information, judge that corresponding UE bearer set can dispatch the data volume sent, by
Desired buffer size or desired data rate is determined.
Mode three: when IAB node 2DU can perceive the downlink data transmitted by BH RLC bearer 3 in BH RLC
The ratio (x%) of 1 overall transfer data volume of bearer, then the flow-control information that IAB node 2MT is sent to IAB node 3DU,
The flow-control information include the ratio of desired buffer size and transmitted data amount quotient or desired data rate withdThe quotient of esired data rate.
Mode four: when congestion occurs in some downstream BH RLC bearer, then IAB node 2MT statistics is all
It is mapped to the desired buffer of the downstream BH RLC bearer of corresponding upstream BH RLC bearer1
The sum of size or desired data rate is sent to IAB node 3DU.
Embodiment nine:
In embodiments of the present invention, the IAB donor CU resource coordination for carrying out centralization is illustrated.IAB node
DU can report the frame structure of cell specific and UE specific to configure to CU, CU according to DU report and current IAB
The resource distribution situation of network is the frame of IAB node DU option and installment suitable cell specific and UE specific
Structure.Specifically, DU passes through F1setup message or gNB-DU configuration update message for cell-specific
Slot format be sent to CU, optionally, DU is by UE context modification required message by IAB
The slot format of the UE specific of node MT or UE are sent to CU.Therefore, IAB donor CU can send resource to DU
Coordination information carries out resource distribution to DU.
When the resource coordination information includes F1AP information, CU sends each sign resources for corresponding to DU by F1AP to DU
Corresponding D-H, D-S, U-H, U-S, F-H, F-S, not available instruction.
In embodiments of the present invention, IAB donor CU can be sent by F1AP to IAB node DU part
F1interface is managed in message (such as F1 setup response, gNB-CU configuration update) and is carried DU
Resource distribution.The DU resource distribution is that per-cell is indicated.This is configured to the child of IAB node DU part
The uplink and downlink communication of link and resource allocation.The F1AP information belongs to the F1 signaling of non-UE specific.The resource refers to
Show that can be used for DU determines that uplink and downlink resource on child BH link and child access link are distributed；
IAB node DU part need to know the corresponding slot format of child IAB node DU part of access,
Such as which is not available time resource, which is soft resource, so that IAB node DU
Part by display and/or implicitly can control these soft resource (time resource type can be D, U or F) and be
The no child link to child IAB node DU part can be used.IAB donor DU and IAB node DU can basis
Received CU indicated by the F1AP semi-static frame structure sent and resource, judgement can be used for child link uplink and
Downlink resource, to carry out corresponding resource distribution.
When the resource coordination information includes rrc message.In embodiments of the present invention, CU can be IAB by RRC signaling
Node MT part configures semi-static frame structure, the frame structure configuration including cell-specific and UE-specific；
Or, CU, which can send semi-persistent resource to IAB node MT part by RRC signaling, configures (2 for DL, type 1 of type
and 2 for UL).The uplink and downlink being configured between IAB node MT part and parent link are communicated and are provided
Source distribution；Or, CU can by RRC signaling be normal UE configure semi-static frame structure, including cell-specific with
And the frame structure configuration and progress semi-persistent resource configuration of UE-specific.
In some embodiments, DU can also be provided by resource coordination information for MT the or normal UE of its service
Source configuration, the resource coordination information can also include L1 signalling information at this time.Such as IAB donor DU and IAB
Node DU sends SFI by IAB node MT and the normal UE that L1 signalling is serviced to it and carries out dynamic slot
Format configuration and DCI/UCI scheduling carry out dynamic resource allocation；In another example Parent IAB donor/node DU
SFI or other frame structure configuration informations are sent by the IAB node MT that L1signalling is serviced to it, the information is for adjusting
The frame structure of the child link of the IAB node DU of whole co-located and resource distribution.In some embodiments, work as IAB
After node DU carries out F instruction by the Flexible symbol on SFI child link, it can pass through its co-located's
IAB node MT sends corresponding instruction to its parent IAB node, and correspondence can be used in parent IAB node at this time
Resource carry out upstream or downstream transmission.IAB donor DU and IAB node DU can pass through L1 according to its parent node
The dynamic frame structure instruction and resource instruction, judgement that signaling is sent can be used for the uplink and downlink resource of child link, thus
Carry out corresponding resource distribution.
In embodiments of the present invention, specific slot format configuration can be uniformly coordinated by CU, and furthermore DU can be sent
Some of the recommendations information, CU carry out centralized configuration on this basis.For the F subframe of IAB node DU configuration, if a certain jump
Link is configured as downlink/downlink resource, then the adjacent higher and lower one parent IAB node DU jumped and
Child IAB node MT cannot reuse the resource.Therefore either D/U or F, requires and INA is according to hop
Order is interconnected.On the other hand, if parent IAB node DU judges its resource abundance, there is more idle slot,
It can then indicate that the soft resource of corresponding IAB node DU is available on these slot.
Embodiment ten
The switching under tri- kinds of scenes of intra-DU, intra-CU and inter-CU is said in the embodiment of the present invention
It is bright: as shown in figure 13,
S1301, IAB node measure the parent IAB node being currently accessed and report.
S1002, reported result are sent to IAB donor CU through the forwarding of parent node and intermediate node.If
IAB donor CU judgement meets the condition of switching, then can select target parent IAB DU for IAB node MT.
S1303, by switching prepare after, switching command is sent to IAB node MT by IAB donor CU
It, can be according to the frame for the UE specific that switching command includes after S1304, IAB node MT receive switching command
Structure configuration identification slot format, then executes random access procedure to target parent IAB DU.
It is understood that can be influenced on resource distribution when IAB is switched over or RLF occurs；Due to parent IAB
DU is changed, therefore the frame format of IAB node DU should be also required to update.In embodiments of the present invention, IAB node
After MT completes switching, IAB donor CU sends gNB CU configuration update to associated IAB node DU
Message updates the frame structure configuration of DU part for it.It should be noted that the corresponding frame structure format configuration of IAB node DU
Configuration including cell-specific and UE specific.Frame format configuration for UE specific, can pass through RRC
Signaling is sent to UE the or child IAB node MT of access by CU.And the configuration for cell specific, traditional NR
It is to be determined by DU and be included in SIB1 in specification, CU is notified by DU.And under IAB scene, IAB donor CU can pass through
F1 setup response message or gNB CU configuration update message send the frame knot of IAB node DU
Structure configuration.Corresponding IAB node DU is composable or updates SIB1 system information, and broadcast transmission.
In some embodiments, when sending switching command to IAB node, RRC reconfiguration therein disappears IAB donor CU
The corresponding frame structure format configuration of IAB node DU has just been contained in breath.IAB node DU frame structure can be reduced in this way
Change bring time delay, reduces interference.
After the frame structure format of IAB node DU updates, the SIB1 of IAB node DU is likely to occur variation, separately
The UE specific frame format of all child IAB node and child UE of its outer service is also possible to change, right
The frame format of its grandchild DU answered is also possible to change.For this problem, it is proposed that selection hop as far as possible
The identical parent IAB node of order.Furthermore it if frame format changes, establishes after system information updates and comes into force.
In embodiments of the present invention, when RLF occurs in IAB node, then IAB node, which can be considered, selects new parent
IAB node, it is intended to be rebuild, when IAB node is rebuild successfully, can obtain and correspond to from new parent IAB node
The UE specific frame structure of the update of IAB node MT configures and/or the resource of the cell-specific of IAB node DU
Configuration.
If it is NR-NR DC scene, donor CU configures on PCell and SCell disjoint for IAB node MT
UE specific frame format.
Embodiment 11:
The present embodiment additionally provides a kind of IAB, shown in Figure 14 comprising IAB includes processor 1401, memory
1402 and communication bus 1403, in which:
Communication bus 1403 is for realizing the connection communication between processor 1401 and memory 1402；
Processor 1401 is as above to realize for executing one or more computer program stored in memory 1402
State at least one step in the IAB network in each embodiment in information processing method.
The present embodiment additionally provides a kind of computer storage medium, which is included in for storing information
Implement in any method or technique of (such as computer readable instructions, data structure, computer program module or other data)
Volatibility or non-volatile, removable or non-removable medium.Computer storage medium includes but is not limited to RAM
(Random Access Memory, random access memory), ROM (Read-Only Memory, read-only memory), EEPROM
(Electrically Erasable Programmable read only memory, the band read-only storage of electric erazable programmable
Device), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory, the read-only storage of CD
Device), digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other magnetic memory apparatus or can
Desired information and any other medium that can be accessed by a computer for storage.
Computer storage medium in the present embodiment can be used for storing one or more computer program, one stored
A or multiple computer programs can be executed by processor, to realize information processing side in the IAB network in the various embodiments described above
At least one step in method.
The present embodiment additionally provides a kind of computer program product, including computer readable device, the computer-readable dress
It sets and is stored with computer program as shown above.The computer readable device may include calculating as shown above in the present embodiment
Machine storage medium.
As it can be seen that those skilled in the art should be understood that whole or certain steps in method disclosed hereinabove, be
Functional module/unit in system, device may be implemented as the software (computer program code that can be can be performed with computing device
To realize), firmware, hardware and its combination appropriate.In hardware embodiment, the functional module that refers in the above description/
Division between unit not necessarily corresponds to the division of physical assemblies；For example, a physical assemblies can have multiple functions, or
One function of person or step can be executed by several physical assemblies cooperations.Certain physical assemblies or all physical assemblies can be by realities
It applies as by processor, such as the software that central processing unit, digital signal processor or microprocessor execute, or is implemented as hard
Part, or it is implemented as integrated circuit, such as specific integrated circuit.
In addition, known to a person of ordinary skill in the art be, communication media generally comprises computer-readable instruction, data knot
Other data in the modulated data signal of structure, computer program module or such as carrier wave or other transmission mechanisms etc, and
It and may include any information delivery media.So the present invention is not limited to any specific hardware and softwares to combine.
The above content is combining specific embodiment to be further described to made by the embodiment of the present invention, cannot recognize
Fixed specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention
Protection scope.
Claims (32)
1. information processing method in a kind of IAB network, comprising:
The first data packet is obtained from accessing and returning the first IAB node；
The first IAB node sends first data packet to IAB host donor.
2. information processing method in IAB network as described in claim 1, which is characterized in that the first IAB node obtains the
One data packet, including following one:
The first IAB node receives the RRC information that UE is sent；
The RRC information that itself MT of the first IAB node is generated；
The F1AP message that itself DU of the first IAB node is generated.
3. information processing method in IAB network as claimed in claim 2, which is characterized in that the first IAB node obtains the
After one data packet, comprising:
The first IAB node is that first data packet adds adaptation layer packet header；In the adaptation layer packet header include at least with
One of lower information:
Destination node information；IAB node identification information；IAB node generates and/or the control signaling of forwarding/data carry mark
Information；The affiliated control plane load identification of first data packet.
4. information processing method in IAB network as claimed in claim 3, which is characterized in that the first IAB node sends institute
The first data packet is stated to IAB host donor, comprising:
The first IAB node sends first data packet to the IAB host donor；
Alternatively, first data packet that the first IAB node is sent is forwarded to the place IAB by one or more intermediate nodes
Main donor.
5. information processing method in IAB network as described in claim 1, which is characterized in that the IAB host donor DU
After the first data packet for receiving the first IAB node, comprising:
First data envelope is mounted in the F1AP message of IAB host donor DU by the IAB host donor DU, described
F1AP message includes: the packaged corresponding IAB node identification of PDCP PDU and load identification information.
6. information processing method in a kind of IAB network, including following one:
IAB node sends flow-control information to father node.
The IAB node is known as father's IAB node to connect the IAB node that identity is accessed.
7. information processing method in IAB network according to claim 6, which is characterized in that the flow-control information include with
It is at least one lower:
One or more load identifications；
One or more Logic Channel Identifiers；
The node identification information of user equipment (UE) mark or IAB node；
The cache size desired buffer size information needed；
The data rate desired data rate information needed；
Flow control instruction.
8. information processing method in IAB network according to claim 7, which is characterized in that the cache size of the needs
Desired buffer size information, including at least one of:
The cache size desired buffer size of the carrying of UE or the corresponding needs of logic channel；
The carrying of the first IAB node or the cache size of the corresponding needs of logic channel.
9. information processing method in IAB network according to claim 7, which is characterized in that the data rate of needs
Desired data rate information, including at least one of:
The data rate desired data rate of the carrying of UE or the corresponding needs of logic channel；
The carrying of the first IAB node or the corresponding data rate desired data rate of logic channel.
10. information processing method in a kind of IAB network, including following one:
IAB host donor CU sends downlink information to IAB host donor DU；
IAB host donor CU sends downlink information to IAB node；
Father IAB node converting downlink information is to IAB node；
The downlink information message includes RRC information or F1AP message.
11. information processing method in IAB network described in any one of claim 10, which is characterized in that the IAB host donor CU hair
Send downlink information to IAB node, comprising:
The IAB host donor CU sends downlink information to IAB host donor DU, passes through the IAB host donor DU
Forward the downlink information to the IAB node；
Alternatively, the IAB host donor CU sends downlink information to IAB host donor DU, the IAB host donor DU
It is jumped by one or multi-hop transmission converting downlink information is to the IAB node.
12. information processing method in IAB network according to claim 10, which is characterized in that the downlink information includes
F1AP message, after the IAB host donor CU generates F1AP message, the F1AP message includes at least one of following information:
Destination node information；The affiliated control plane load identification information of F1AP message；IAB host's donor DU configuration information；IAB section
Point DU configuration information.
13. IAB network central control information processing method as claimed in claim 12, which is characterized in that the IAB donor
DU configuration information includes:
IAB host donor DU receives the mapping relationship of IP address and IAB node DU mark；
Or,
The routing table of the IAB host donor DU includes the pass mapping of purpose IP address and next-hop IAB node identification
System.
14. information processing method in IAB network as claimed in claim 12, which is characterized in that the IAB node DU matches confidence
Breath includes:
Corresponding to each sign resources corresponding D-H, D-S, U-H of IAB node DU, U-S, F-H, F-S, not available
Instruction.
15. information processing method in IAB network according to claim 10, which is characterized in that the father IAB node forwarding
After downlink information to IAB node, comprising:
The father IAB node DU is that the Downlink Control Information adds adaptation layer packet header, includes MT whole in the adaptation layer packet header
Only information.
16. information processing method in IAB network according to claim 10, which is characterized in that the Downlink Control Information
Message includes RRC information, and after the IAB host donor CU generates RRC information, the RRC information includes at least following information
One of:
The semi-static frame structure of the IAB node；
The semi-persistent resource of the IAB node configures；
The semi-static frame structure of terminal UE.
17. a kind of IAB network central control information processing method, comprising: from access return link IAB node to the IAB node
Next-hop IAB node send information.
18. information processing method in IAB network as claimed in claim 17, which is characterized in that the information includes that IAB is generated
And/or the upstream message of forwarding carries flag information；
The IAB is generated and/or the upstream message of forwarding carrying flag information includes:
Carried in the adaptive subheader of IAB node whether be MT signaling instruction information, and/or, if be the finger of transmitting signaling
Show information；
The corresponding IAB node of control signaling of encapsulation and the mark of SRB are carried in the adaptive subheader of next-hop IAB node
Information.
19. information processing method in IAB network as claimed in claim 17, which is characterized in that IAB node includes IAB
Donor, the information include the downstream message carrying flag information that IAB is generated and/or forwarded；
IAB donor CU carries the corresponding SRB mark of its embedded F1AP message and IAB node identification in F1AP message；
The IAB node identification includes IAB node DU mark or collocated IAB node MT mark.
20. information processing method in IAB network as claimed in claim 19, which is characterized in that the IAB donor CU exists
After carrying its embedded F1AP message corresponding SRB mark and IAB node identification in F1AP message, comprising:
After IAB donor DU receives the F1AP message, the IAB node identification and SRB mark that inside includes are parsed
Know；
The IAB node identification and SRB mark are encapsulated in adaptive subheader, and the F1AP message is passed through into intermediate node
It is transmitted to next-hop IAB node.
21. information processing method in IAB network as claimed in claim 20, which is characterized in that described to be sealed in adaptive subheader
The IAB node identification and SRB mark are filled, the F1AP message is transmitted to next-hop IAB node by intermediate node
Later, comprising:
After the next-hop IAB node receives the data packet, when determining that IAB node identification is inconsistent with itself, next-hop IAB
The RRC information for including in the F1AP message parsed is delivered to adaptation layer by node.
22. information processing method in IAB network as claimed in claim 21, which is characterized in that the next-hop IAB node will solve
The RRC information for including in the F1AP message separated out is delivered to after adaptation layer, comprising:
The next-hop IAB node adds MT in adaptation layer subheader and terminates instruction.
23. information processing method in IAB network as claimed in claim 17, which is characterized in that the information includes: flow control letter
Breath；
The flow-control information include: terminal UE carrying or the corresponding LCID of the IAB node, desired buffer size and/
Or data rate.
24. information processing method in IAB network as claimed in claim 23, which is characterized in that the IAB node sends information
After next-hop IAB node, comprising:
Next-hop IAB node receives the flow-control information, determines that residual buffer area size desired buffer size value is 0,
Stop dispatching the data of the logic channel；
And/or
Determine that residual buffer area size desired buffer size is greater than 0, then for RLC AM mode from TX_Next_Ack-
1 calculates total amount of data, for RLC UM mode, then calculates according to the data volume of transmission to be dispatched.
25. information processing method in IAB network as claimed in claim 17, which is characterized in that the information includes flow control letter
Breath；
Flow-control information includes: that whether adaptation layer carries with the presence of flow-control information, or directly indicates whether desire data
Rate and/or whether with the presence of desired buffer size.
26. information processing method in IAB network as claimed in claim 25, which is characterized in that IAB node sends flow-control information
Include: to next-hop IAB node
The flow-control information is carried in IAB nodal test to some UE or the buffer of backhaul BH RLC channel is beyond given
After thresholding, down hop IAB node sends the cache size desired data rate needed, or the data rate needed
desired data rate；
Or, the buffer size of IAB nodal test to corresponding backhaul BH RLC channel are less than given thresholding, to next
It jumps IAB node and sends flow control stopping instruction；
Or, the buffer size of IAB nodal test to corresponding backhaul BH RLC channel are less than given thresholding, it will
Desired buffer size or desired data rate is set as maximum permissible value.
27. information processing method in IAB network as claimed in claim 17, which is characterized in that the information includes: flow control letter
Breath；
Flow-control information includes desired the buffer size and/or desired of terminal carrying or backhaul BH RLC carrying
data rate。
28. IAB network central control information processing method as claimed in claim 17, which is characterized in that the control packet
It includes: flow-control information；
The flow-control information includes desired the buffer size and/or desired of terminal carrying or backhaul BH RLC carrying
Data rate, terminal identification information.
29. IAB network central control information processing method as claimed in claim 17, which is characterized in that the control packet
It includes: flow-control information,
The IAB node knows that terminal carrying or backhaul BH RLC carry the downlink data of transmission in the BH mapped with the terminal
When the ratio of the backhaul BH RLC carrying overall transfer data volume of RLC bearer or backhaul BH RLC carrying mapping, flow-control information
The quotient or desired data rate and desired of ratio including desired buffer size and transmitted data amount
The quotient of data rate.
30. information processing method in IAB network as claimed in claim 17, which is characterized in that the information includes: flow control letter
Breath,
The flow-control information include it is all be mapped to BH RLC bearer terminals carrying desired buffer size or
The sum of desired data rate.
31. a kind of IAB, which is characterized in that the IAB includes processor, memory and communication bus, in which:
Communication bus is for realizing the connection communication between processor and memory；
Processor is for executing one or more computer program stored in memory, to realize that claim 1-5 such as appoints
At least one step in IAB network central control information processing method described in one；
Or,
To realize at least one step in IAB network central control information processing method as claim in any one of claims 6-9；
Or, to realize such as at least one of described in any item IAB network central control information processing methods of claim 10-16
Step；
Or, to realize such as at least one of described in any item IAB network central control information processing methods of claim 17-30
Step.
32. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage have one or
Multiple programs, one or more of programs can be executed by one or more processor, to realize that claim 1-5 such as appoints
At least one step in IAB network central control information processing method described in one；
Or,
To realize at least one step in IAB network central control information processing method as claim in any one of claims 6-9；
Or, to realize such as at least one of described in any item IAB network central control information processing methods of claim 10-16
Step；
Or, to realize such as at least one of described in any item IAB network central control information processing methods of claim 17-30
Step.
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| PCT/CN2020/075101 WO2020164546A1 (en) | 2019-02-15 | 2020-02-13 | Method for processing information in iab network, iab, and computer storage medium |
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| CN201910115224.XA CN110536351B (en) | 2019-02-15 | 2019-02-15 | Information processing method in IAB network, IAB and computer storage medium |
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| CN110536351B (en) | 2024-06-04 |
| WO2020164546A1 (en) | 2020-08-20 |
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