CN114339841A - Private network 5G base station, 5G network, 5G communication method and storage medium - Google Patents
Private network 5G base station, 5G network, 5G communication method and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a private network 5G base station, a 5G network, a 5G communication method and a storage medium, wherein the private network 5G base station comprises a private network AAU and a private network DU which are sequentially in communication connection, the private network DU is in communication connection with a private network NGC, and the private network DU is also in communication connection with a public network CU through a first F1 interface; the private network AAU receives a data packet sent by the user side communication equipment and sends the data packet to a private network DU, and the data packet comprises a PLMN identification code of the user side communication equipment; the private network DU decodes the data packet to an RLC layer to obtain a PLMN identification code, and determines whether the data packet is sent by private network user side communication equipment or not according to the PLMN identification code, so that the decoded data packet is determined to be sent to a private network NGC or a public network CU; therefore, data distribution of the private network user side communication equipment and the public network user side communication equipment is realized.
Description
Technical Field
The present invention relates to, but not limited to, the field of communications, and in particular, to a private network 5G base station, a 5G network, a 5G communication method, and a storage medium.
Background
The 5G Network (5G Network) is a fifth generation mobile communication Network, and the peak value theoretical transmission speed can reach 20Gbps, and 2.5GB per second is higher than the transmission speed of the 4G Network by more than 10 times. The Ministry of industry and communications has been tied up to promote the construction of new infrastructures such as 5G, files such as a double gigabit network collaborative development action plan (2021 + 2023), a 5G application sail action plan (2021 + 2023), and the like were successively transmitted in 2021, thereby promoting the high-quality development of 5G network construction and application. The development planning of information communication industry comprehensively deploys novel digital infrastructures, including new-generation communication network infrastructures such as 5G and gigabit optical fiber networks. The 5G network is increasingly widely applied to scenes requiring ultra-low time delay and high reliability, such as unmanned driving, Internet of vehicles, automatic factories, remote medical treatment and the like.
In some application scenarios of the 5G network, there is an overlapping requirement for private network internal security management and public network usage. In response to this requirement, the current practice is to apply for a special independent communication spectrum for a private network to construct the private network, and a communication terminal inside the private network can only use the special communication spectrum to be isolated and distinguished from a communication spectrum used by a communication terminal inside a public network covering the private network. The networking mode has repeated networking of a private network and a public network, so that the cost is high, communication frequency spectrums need to be strictly distinguished, the universality is poor, and the utilization rate of resources such as the communication frequency spectrums is low.
Disclosure of Invention
The invention provides a private network 5G base station, a 5G network, a 5G communication method and a storage medium, which solve the problems of high cost, poor universality and low resource utilization rate of a private network and a public network independent networking mode in the existing 5G network.
In order to solve the above problem, the present invention provides a private network 5G base station, including:
the private network 5G base station comprises a private network AAU and a private network DU in communication connection with the private network AAU, wherein the private network DU is used for being in communication connection with a private network NGC, and the private network DU is also used for being in communication connection with a public network CU through a first F1 interface; the private network DU maintains a PLMN list, and the PLMN list comprises a PLMN identification code of private network user side communication equipment;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; and if the data packet does not exist, the data packet is sent by the public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface.
Optionally, the private network 5G base station further includes a private network CU, the private network DU is communicatively connected to the private network CU through a second F1 interface, and the private network CU is communicatively connected to the private network NGC through a first Nx interface;
the private network DU is configured to send the decoded data packet to the private network CU through the second F1 interface when determining that the PLMN identification code exists in the PLMN list;
and the private network CU is used for sending the decoded data packet received from the second F1 interface to the private network NGC through the first Nx interface after being processed by the PDCP layer and the RRC layer in sequence.
Optionally, the private network 5G base station is composed of the private network AAU and the private network DU, the private network DU is configured to be communicatively connected to a peripheral CU located outside the private network 5G base station through a third F1 interface, and the peripheral CU is communicatively connected to the private network NGC through a second Nx interface;
the private network DU is configured to send the decoded data packet to the peripheral CU through the third F1 interface when determining that the PLMN identification code exists in the PLMN list;
the peripheral CU is configured to send the decoded data packet received from the third F1 interface to the private network NGC through the second Nx interface after sequentially processing the data packet by the PDCP layer and the RRC layer.
The invention also provides a 5G access network, which comprises a public network 5G base station and the private network 5G base station;
the public network 5G base station comprises a public network CU, the public network CU is in communication connection with the private network DU through a first F1 interface, and the public network CU is also used for being in communication connection with a public network NGC through a third Nx interface;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; if the data packet does not exist, the data packet is sent by public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface;
and the public network CU sends the decoded data packet to the public network NGC through the third Nx interface.
The invention also provides a 5G network, which comprises user side communication equipment, a private network NGC, a public network NGC and the 5G access network according to claim 4; the user side communication equipment comprises private network user side communication equipment and public network user side communication equipment; the private network DU is in communication connection with the private network NGC, and the public network CU is in communication connection with the public network NGC through the third Nx interface;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; if the data packet does not exist, the data packet is sent by public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface;
and the public network CU sends the decoded data packet to the public network NGC through the third Nx interface.
Optionally, the communication frequency band of the private network user side communication device is the same as the communication frequency band of the public network user side communication device.
The invention also provides a 5G communication method, which is applied to the private network 5G base station and comprises the following steps:
the private network AAU receives a data packet sent by the user side communication equipment and sends the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU decodes a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then obtains the PLMN identification code in the data packet;
the private network DU determines whether the PLMN identification code obtained by decoding exists in the PLMN list or not;
if the data packet exists, the data packet is sent by private network user side communication equipment, and the private network DU sends the decoded data packet to the private network NGC;
if the data packet does not exist, the data packet is sent by the public network user side communication device, and the private network DU directly sends the decoded data packet to the public network CU through the first F1 interface.
Optionally, the sending, by the private network DU, the decoded data packet to the private network NGC includes:
the private network DU sends the decoded data packet to a private network CU included in the private network 5G base station through a second F1 interface;
and the private network CU sends the decoded data packet received from the second F1 interface to the private network NGC through a first Nx interface after sequentially processing the data packet through a PDCP layer and an RRC layer.
Optionally, the sending, by the private network DU, the decoded data packet to the private network NGC includes:
the private network DU sends the decoded data packet to a peripheral CU outside the private network 5G base station through a third F1 interface;
the peripheral CU is configured to send the decoded data packet received from the third F1 interface to the private network NGC through the second Nx interface after sequentially processing the data packet by the PDCP layer and the RRC layer.
The invention also provides a computer storage medium applied to the private network 5G base station, wherein the computer storage medium stores at least one computer program which is called to execute the 5G communication method.
Advantageous effects
The invention provides a private network 5G base station, a 5G network, a 5G communication method and a storage medium, wherein the private network 5G base station comprises a private network AAU and a private network DU which are sequentially in communication connection, the private network DU is in communication connection with a private network NGC, and the private network DU is also in communication connection with a public network CU through a first F1 interface; the private network AAU receives a data packet sent by the user side communication equipment and sends the data packet to a private network DU, and the data packet comprises a PLMN identification code of the user side communication equipment; the private network DU decodes the data packet to an RLC layer through a High-PHY layer and an MAC layer in sequence, acquires a PLMN identification code in the data packet, indicates that the data packet is sent by private network user side communication equipment when determining that the PLMN identification code obtained by decoding exists in a PLMN list, and sends the decoded data packet to a private network NGC; if the data packet does not exist, the data packet is sent by the public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface; the method and the device realize the data distribution of the private network user side communication equipment and the public network user side communication equipment, do not need repeated networking of the public network and the private network, reduce the cost, do not need to specially distinguish communication frequency spectrums used by the public network and the private network, have good universality, and also can adopt the same communication frequency spectrums, thereby improving the utilization rate of frequency spectrum resources; different communication frequency spectrums can be adopted according to requirements, and flexibility is improved.
Drawings
Fig. 1 is a first schematic structural diagram of a private network 5G base station according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a private network 5G base station according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a private network 5G base station according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a 5G access network structure provided in the embodiment of the present invention;
fig. 5 is a first schematic diagram of a 5G network structure according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a 5G network structure according to an embodiment of the present invention;
fig. 7 is a schematic view of a flow node of a 5G communication method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a private network 5G base station, which may also be referred to as a private network gNB, and as shown in fig. 1, the private network includes: an Active Antenna Unit (AAU) 11, and a Distributed Unit (DU) 12, where:
the private network AAU11 includes an antenna 111, an RF layer 112, and a Low-PHY layer 113. The functions of Low-PHY layer 113 may include, but are not limited to, precoding, digital beamforming, IFFT, and CP addition/removal; the complex field I/Q samples transmitted on the forward interface are all frequency domain data. In some examples, the Low-PHY layer 113 includes software entities that have a strong correlation with DSPs.
The private network DU12 includes an RLC (Radio Link Control protocol) layer 121, an MAC (Media Access Control) layer 122, and a High-PHY layer 123, where:
the RLC layer 121, which is part of L2, is located above the MAC layer 122 and provides segmentation and retransmission services for user and control data. In the control plane, the service provided by the RLC to the upper layer is a radio signaling bearer (SRB); in the user plane, when a PDCP (Packet Data Convergence Protocol) and a BMC Protocol are not used by the service, the RLC provides a radio bearer RB to an upper layer; otherwise, the RB service is carried by PDCP or BMC. Each RLC entity is configured by RRC (Radio Resource Control), and has three modes according to a service type: transparent mode TM, unacknowledged mode UM, acknowledged mode AM. The MAC layer 122 belongs to a lower sublayer of a data link layer in the OSI model, and is mainly responsible for controlling and connecting physical media of a physical layer. When sending data, the MAC protocol can judge whether the data can be sent in advance, if so, the MAC protocol adds some control information to the data, and finally sends the data and the control information to a physical layer in a specified format; when receiving data, the MAC protocol firstly judges the input information and whether transmission errors occur, if no errors occur, the control information is removed and sent to a logical link control layer. The functions of the High-PHY layer 123 include, but are not limited to, codec, rate matching, scrambling, modem, and layer mapping. The complex field I/Q samples transmitted on the forward interface are all frequency domain data. The High-PHY may include software entities in finger L1 that have no direct strong correlation with the DSP.
It should be understood that the private network AAU11 and the private network DU12 have multiple segmentation schemes, and different segmentation schemes have different application scenarios and performance gains, and have different requirements on parameters such as bandwidth, transmission delay, synchronization, and the like of a fronthaul interface. Therefore, the protocol segmentation schemes of the private network AAU11 and the private network DU12 are not limited to the scheme shown in fig. 1 in this embodiment, and may also be replaced by other segmentation methods according to specific requirements, which is not described in detail herein.
Referring to fig. 1, in the present embodiment, the rated private network AAU11 is communicatively connected to a private network DU12, and the private network DU12 is communicatively connected to a public network CU (Centralized Unit, not shown in fig. 1) through a first F1 interface, so as to be communicatively connected to a public network NGC (i.e., a public network 5G core network) through the public network CU; and the private network DU12 is also used for communication connection with the private network NGC (i.e., the private network NGC). In this embodiment, the private Network DU maintains a PLMN (Public Land Mobile Network) list, where the PLMN list includes a PLMN identification code of the private Network user side communication device. Thus, the private network DU may determine whether the user side communication device that transmits the data packet is a private network user side communication device within the private network according to whether the PLMN identification code in the data packet transmitted by the user side communication device exists in the PLMN list, for example, if the PLMN identification code exists. Of course, in some alternative examples, the PLMN list may also include PLMN identifiers of the public network user side communication devices. Thus, the private network DU may determine whether the user side communication device that transmits the data packet is a private network user side communication device within the private network according to whether the PLMN identification code in the data packet transmitted by the user side communication device exists in the PLMN list, for example, if the PLMN identification code does not exist. It can be understood that, in other alternative examples, the PLMN list may also include a PLMN identification code of the private network user side communication device and a PLMN identification code of the public network user side communication device at the same time, for example, the PLMN identification code of the private network user side communication device and the PLMN identification code of the public network user side communication device may be respectively stored in two different sub-tables for subsequent matching identification, which is not described herein again.
In this embodiment, the private network AAU11 is used for communication connection with the user-side communication device, that is, the private network AAU11 is accessible to the private-network user-side communication device and the public-network user-side communication device. After receiving the data packet sent by the user side communication device, the private network AAU11 sends the data packet to the private network DU12, where the data packet includes the PLMN identification code of the user side communication device.
The private network DU12 is used for decoding a data packet sent by the private network AAU11 to the RLC layer 121 through the High-PHY layer 123 and the MAC layer 122 in sequence, and extracting a PLMN identification code in the decoded data packet; the private network DU12 determines whether the PLMN identification code obtained by decoding exists in the PLMN list, if so, the data packet is sent by the private network user side communication equipment, and the decoded data packet is sent to the private network NGC; if the data packet does not exist, the data packet is sent by the public network user side communication equipment, the decoded data packet is directly sent to the public network CU through the first F1 interface, and the decoded data packet is sent to the public network NGC through the public network CU, so that data distribution of the private network user side communication equipment and the public network user side communication equipment is realized. As can be seen from fig. 1, the offloading scheme provided in this embodiment does not require repeated networking of the public network and the private network, so that the cost can be greatly reduced, and the communication frequency spectrums used by the public network and the private network do not need to be specially distinguished, so that the universality is good, that is, the communication device at the private network user side and the communication device at the public network user side in this embodiment can use the same communication frequency spectrum, thereby improving the utilization rate of the frequency spectrum resources; the private network user side communication equipment and the public network user side communication equipment can adopt different communication frequency spectrums according to requirements, and flexibility is improved. And the private network DU12 determines that the data packet is sent by the public network user side communication device, and directly sends the decoded data packet to the public network CU through the first F1 interface, without repeatedly decoding the data packet by the public network DU in the public network, that is, in this embodiment, the public network 5G base station does not need to set the public network DU and the public network AUU, and can use the private network AAU and the private network DU of the private network 5G base station to realize the data transceiving of the public network user side communication device, which can further simplify the network architecture, reduce the cost and improve the data processing efficiency and the resource utilization rate. In addition, in this embodiment, only the first F1 interface communicatively connected to the private network DU12 needs to be opened on the public network CU, which is simple and low in cost and has good versatility. Of course, it should be understood that the connection between the public network CU and the private network DU12 in this embodiment is not limited to the first F1 interface provided in this embodiment, and other interfaces capable of achieving the same function may be used instead, and are not described in detail herein. Of course, it should be understood that in other application scenarios, the public network DU and the public network AUU may also be set for the public network 5G base station, and the set public network DU and the public network AUU may only face the public network user side communication device, or may face the public network user side communication device and the private network user side communication device, but the public network DU may not perform the shunting processing, so as to meet the requirements of various application scenarios.
It should be understood that, in this embodiment, the connection mode between the private network AAU11 and the private network DU12 may be through, but not limited to, an enhanced Common Radio Interface (enhanced Common Radio Interface) communication connection, and in other application scenarios, other communication interfaces capable of achieving the same function may also be used to replace the eCPRI Interface, which is not limited in this embodiment. In this embodiment, the public network CU and the public network NGC may be communicatively connected through, but not limited to, an Nx interface, which may include, but is not limited to, at least one of an N1 interface, an N2 interface, and an N3 interface. Of course, other communication interfaces may be adopted to replace the Nx interface according to the requirement, and this embodiment does not limit this.
In this embodiment, when the private network DU12 determines that the received data packet is sent by the private network user side communication device, the manner of sending the decoded data packet to the private network NGC may be flexibly set.
For example, referring to fig. 2, in an example, the private network 5G base station 1 may further include a private network CU13 communicatively connected to a private network DU12, the private network DU12 may be communicatively connected to the private network CU13 through, but not limited to, a second F1 interface, where the second F1 interface may be the same physical interface as the first F1 interface or may be a different physical interface. In this embodiment, the private network CU13 may be communicatively connected to the private network NGC through, but not limited to, the first Nx interface; when determining that the received Data Packet is sent by the private network user side communication device, the decoded Data is sent to the private network CU13 through the second F1 interface, and the private network CU13 is configured to send the decoded Data Packet received from the second F1 interface to the private network NGC through the first Nx interface after sequentially passing through the PDCP (Packet Data Convergence Protocol) layer 131 and the Data/RRC (Radio Resource Control) layer 132.
For ease of understanding, the private network CU13 of the private network 5G base station 1 is exemplified below in the present embodiment. The private network CU13 is a centralized node, which is connected to the private network NGC via a first Nx interface, and can control and coordinate multiple cells within the access network, including protocol stack high-level control and data functions. The private network CU13 has multiple segmentation schemes, different segmentation schemes are different in applicable scenes and performance gains, and meanwhile, requirements on parameters such as bandwidth, transmission delay and synchronization of a forward transmission interface are greatly different. For the convenience of understanding, the present embodiment is described below with reference to the protocol layer segmentation example of the private network CU13 shown in fig. 2, which includes the processed PDCP layer 131 and the data/RRC layer 132, where: PDCP is an abbreviation for packet data convergence protocol. It is a radio transport protocol stack in UMTS that is responsible for compressing and decompressing IP headers, transmitting user data and maintaining sequence numbers of radio bearers set for lossless radio network service subsystems. The RRC is a message configuration center and a control center of an access layer of the entire wireless communication protocol stack, and may understand a radio resource control layer as a general language that both a network and a user terminal should understand. It should be understood that, in some application scenarios of the present embodiment, the public network CU may adopt, but is not limited to, the same or similar architecture as the private network CU13, and will not be described herein again. In this embodiment, in a specific implementation of the device, the private network DU12 and the private network CU13 of the private network 5G base station 1 may adopt a scheme in which the private network DU12 and the private network CU13 are combined, or may adopt a scheme in which the private network DU12 and the private network CU13 are separated, where: the private network DU12 and private network CU13 co-located scheme is similar to BBU devices in 4G, and the logical functions of the private network DU12 and private network CU13 are simultaneously implemented in a single physical entity, and are implemented by using dedicated chips such as ASICs based on a telecommunication dedicated architecture. Private network DU12 and private network CU13 co-located devices can follow the architecture mode similar to CU board + DU board to ensure the flexibility of subsequent expansion and new function introduction. The logical functional division of the CU board and the DU board may follow the 3GPP standard division, i.e. the logical interface between the CU board and the DU board is the F1 interface. However, considering that the F1 interface is a BBU internal interface in this combined device, the logical function division of the CU board and the DU board may also adopt a non-standard implementation scheme. The private network DU12 and private network CU13 separation scheme has two types of physical devices: a separate private network DU12 device and a separate private network CU13 device. According to the standard architecture of 3GPP, the private network DU12 device is responsible for completing the protocol stack processing functions such as RLC/MAC/PHY with higher real-time requirements, and the private network CU13 device is responsible for completing the protocol stack processing functions such as PDCP/RRC/SDAP with lower real-time requirements. In the separation scheme, due to the requirement of high real-time performance of the private network DU12, and due to the introduction of Massive-MIMO technology (such as 64T64R) and large bandwidth (such as 100MHz carrier bandwidth) in 5G NR, throughput is increased by tens of times to hundreds of times compared with 4G, and the physical layer involves a large number of parallel intensive complex matrix operations and high-speed data exchange at the level of hundreds of Gbps, so that signal processing complexity is also increased by hundreds of times compared with 4G.
For another example, referring to fig. 3, the private network 5G base station 1 is composed of a private network AAU11 and a private network DU12, the private network DU12 is configured to be communicatively connected to a peripheral CU2 located outside the private network 5G base station 1 through a third F1 interface, and the peripheral CU2 is communicatively connected to the private network NGC through a second Nx interface;
the private network DU12 is configured to send the decoded data packet to the peripheral CU2 through the third F1 interface when determining that the PLMN identifier exists in the PLMN list; the peripheral CU2 is configured to send the decoded data packet received from the third F1 interface to the private network NGC through the second Nx interface after sequentially processing the data packet by the PDCP layer 21 and the data/RRC layer 22. It should be understood that, in some application scenarios of the present embodiment, the peripheral CU2 may adopt, but is not limited to, the same or similar architecture as the private network CU13, and thus will not be described herein again. In the method, the peripheral CU2 can be flexibly arranged outside the private network 5G base station 1, the communication architecture is more flexible, and the method is suitable for various application scenes.
In this embodiment, for downlink traffic, for example, traffic from the private network NGC, after receiving and decoding the downlink traffic to the RLC layer, the private network 5G base station 1 directly hands over to the access side RLC to re-encode the downlink traffic to the NR air interface without determining the PLMN. And recoding the traffic from the public network NGC to an NR air interface for sending by adopting but not limited to the existing traffic forwarding mode through a public network 5G base station. Therefore, the existing public network architecture does not need to be changed, and the compatibility is good.
The embodiment provides a 5G access network capable of implementing 5G traffic offload processing of private network users and public network users, which is shown in fig. 4 and includes a public network 5G base station 3 and a private network 5G base station 1 shown in each example;
the public network 5G base station 3 comprises a public network CU33, the public network CU33 is in communication connection with a private network DU12 through a first F1 interface, and the public network CU33 is also used for being in communication connection with a public network NGC through a third Nx interface;
the private network AAU11 is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU12, wherein the data packet comprises a PLMN identification code of the user side communication equipment; the private network DU12 is used for decoding a data packet sent by the private network AAU11 to the RLC layer 121 through the High-PHY layer 123 and the MAC layer 122 in sequence, and then acquiring a PLMN identification code in the data packet; the private network DU12 is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, send the data packet to the private network NGC, where the data packet is sent by the private network user side communication device; if the data packet does not exist, the data packet is sent by the public network user side communication equipment, and the decoded data packet is directly sent to the public network CU33 through a first F1 interface; and the public network CU sends the decoded data packet to the public network NGC through a third Nx interface. The specific processing procedures of the above steps are shown in the above examples, and this embodiment is not described herein again.
The embodiment provides a 5G network capable of implementing 5G traffic offload processing of private network users and public network users, which includes a user side communication device, a private network NGC, a public network NGC, and the 5G access network as described above. For example, an exemplary 5G network is shown in fig. 5, which includes a user-side communication device 6, where the user-side communication device 6 includes a private network user-side communication device and a public network user-side communication device; the private network DU12 is in communication connection with the private network NGC4 through a private network CU13 by adopting a first Nx interface, and the public network CU33 is in communication connection with the public network NGC5 through a third Nx interface; the private network AAU11 is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU12, wherein the data packet comprises a PLMN identification code of the user side communication equipment; the private network DU12 is used for decoding a data packet sent by the private network AAU11 to the RLC layer 121 through the High-PHY layer 123 and the MAC layer 122 in sequence, acquiring a PLMN identification code in the data packet, and determining whether the PLMN identification code obtained through decoding exists in a PLMN list, wherein if the PLMN identification code exists, the data packet is sent by private network user side communication equipment, the decoded data packet is sent to the private network CU13, and the private network CU13 sends to the private network NGC4 through a first Nx interface; if the data packet does not exist, the data packet is sent by the public network user side communication equipment, the decoded data packet is directly sent to the public network CU33 through the first F1 interface, and the public network CU33 is sent to the public network NGC5 through the third Nx interface. In this embodiment, the number of the private networks DU22 connected to one public network CU33 may be flexibly set according to requirements, for example, one private network DU22 may be connected to one public network CU33, or two or more private networks DU22 may be connected according to requirements. The number of private networks DU22 connected to one private network CU23 can also be flexibly set, and will not be described herein.
Another exemplary 5G network is shown in fig. 6, and includes a user-side communication device 6, where the user-side communication device 6 includes a private network user-side communication device and a public network user-side communication device; the private network DU12 is connected with the peripheral CU2 through a third F1 interface, the peripheral CU2 is in communication connection with the private network NGC4 through a second Nx interface, and the public network CU33 is in communication connection with the public network NGC5 through a third Nx interface; the private network AAU11 is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU12, wherein the data packet comprises a PLMN identification code of the user side communication equipment; the private network DU12 is used for decoding a data packet sent by the private network AAU11 to the RLC layer 121 through the High-PHY layer 123 and the MAC layer 122 in sequence, acquiring a PLMN identification code in the data packet, and determining whether the PLMN identification code obtained through decoding exists in a PLMN list, if so, the data packet is sent by private network user side communication equipment, the decoded data packet is sent to the peripheral CU2, and the peripheral CU2 sends to the private network NGC4 through a second Nx interface; if the data packet does not exist, the data packet is sent by the public network user side communication equipment, the decoded data packet is directly sent to the public network CU33 through the first F1 interface, and the public network CU33 is sent to the public network NGC5 through the third Nx interface. In this embodiment, the communication frequency band of the private network user side communication device may be set to be the same as the communication frequency band of the public network user side communication device, so as to improve the universality.
For convenience of understanding, the present embodiment is described below by taking the 5G communication method of the private network 5G base station as an example shown in the above example, and with reference to fig. 7, the method includes:
s701: the private network AAU11 of the private network 5G base station 1 receives the data packet sent by the user side communication device, and sends the data packet to the private network DU12, where the data packet includes the PLMN identification code of the user side communication device.
S702: after the data packet sent by the private network AAU11 is decoded to the RLC layer 121 by the private network DU12 of the private network 5G base station 1 through the High-PHY layer 123 and the MAC layer 122 in sequence, the PLMN identification code in the data packet is obtained.
S703: the private network DU12 determines whether the decoded PLMN identity exists in the PLMN list, if yes, go to S704; otherwise, go to S705.
S704, the data packet is sent by the private network user side communication device, and the private network DU12 sends the decoded data packet to the private network NGC.
For example, the private network DU12 sends the decoded data packet to the private network CU13 included in the private network 5G base station 1 through the second F1 interface; the private network CU13 sequentially processes the decoded data packet received from the second F1 interface through the PDCP layer 131 and the data/RRC layer 132, and then sends the data packet to the private network NGC4 through the first Nx interface.
For another example, the private network DU12 sends the decoded data packet to the peripheral CU2 located outside the private network 5G base station through the third F1 interface; the peripheral CU2 sequentially processes the decoded data packet received from the third F1 interface through the PDCP layer and the RRC layer, and then sends the processed data packet to the private network NGC4 through the second Nx interface.
S705, the data packet is sent by the public network user side communication device, and the private network DU12 directly sends the decoded data packet to the public network CU33 through the first F1 interface.
S706, the public network CU33 sends the decoded data packet received from the first F1 interface to the public network NGC5 through the third Nx interface after sequentially processing the data packet through a PDCP layer and a data/RRC layer.
The embodiment also provides a private network 5G base station, which includes a processor, a memory and a communication bus, wherein: the communication bus is used for realizing connection communication between the processor and the memory; the processor is configured to execute one or more computer programs stored in the memory to implement at least one step performed by the private network 5G base station in the 5G communication offloading method.
The present embodiments also provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the stored one or more computer programs may be executed by the processor to implement at least one step performed by the private network 5G base station in the 5G communication offloading method described above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A private network 5G base station, comprising:
the private network 5G base station comprises a private network AAU and a private network DU in communication connection with the private network AAU, wherein the private network DU is used for being in communication connection with a private network NGC, and the private network DU is also used for being in communication connection with a public network CU through a first F1 interface; the private network DU maintains a PLMN list, and the PLMN list comprises a PLMN identification code of private network user side communication equipment;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; and if the data packet does not exist, the data packet is sent by the public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface.
2. The private network 5G base station of claim 1, wherein the private network 5G base station further comprises a private network CU, wherein the private network DU is communicatively connected to the private network CU through a second F1 interface, and wherein the private network CU is communicatively connected to the private network NGC through a first Nx interface;
the private network DU is configured to send the decoded data packet to the private network CU through the second F1 interface when determining that the PLMN identification code exists in the PLMN list;
and the private network CU is used for sending the decoded data packet received from the second F1 interface to the private network NGC through the first Nx interface after being processed by the PDCP layer and the RRC layer in sequence.
3. The private network 5G base station of claim 1, wherein the private network 5G base station is comprised of the private network AAU and the private network DU, the private network DU for communicative connection with a peripheral CU outside the private network 5G base station over a third F1 interface, the peripheral CU communicative connection with the private network NGC over a second Nx interface;
the private network DU is configured to send the decoded data packet to the peripheral CU through the third F1 interface when determining that the PLMN identification code exists in the PLMN list;
the peripheral CU is configured to send the decoded data packet received from the third F1 interface to the private network NGC through the second Nx interface after sequentially processing the data packet by the PDCP layer and the RRC layer.
4. A 5G access network comprising a public network 5G base station and a private network 5G base station according to any one of claims 1 to 3;
the public network 5G base station comprises a public network CU, the public network CU is in communication connection with the private network DU through a first F1 interface, and the public network CU is also used for being in communication connection with a public network NGC through a third Nx interface;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; if the data packet does not exist, the data packet is sent by public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface;
and the public network CU sends the decoded data packet to the public network NGC through the third Nx interface.
5. A5G network, characterized by comprising a user side communication device, a private network NGC, a public network NGC and a 5G access network according to claim 4; the user side communication equipment comprises private network user side communication equipment and public network user side communication equipment; the private network DU is in communication connection with the private network NGC, and the public network CU is in communication connection with the public network NGC through the third Nx interface;
the private network AAU is used for being in communication connection with the user side communication equipment, receiving a data packet sent by the user side communication equipment and sending the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU is used for decoding a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then acquiring the PLMN identification code in the data packet;
the private network DU is further configured to determine whether the decoded PLMN identification code exists in the PLMN list, and if so, the data packet is sent by a private network user side communication device, and the decoded data packet is sent to the private network NGC; if the data packet does not exist, the data packet is sent by public network user side communication equipment, and the decoded data packet is directly sent to the public network CU through the first F1 interface;
and the public network CU sends the decoded data packet to the public network NGC through the third Nx interface.
6. The 5G network of claim 5, wherein the communication band of the private network user side communication device is the same as the communication band of the public network user side communication device.
7. A 5G communication method applied to the private network 5G base station according to any one of claims 1 to 3, comprising:
the private network AAU receives a data packet sent by the user side communication equipment and sends the data packet to the private network DU, wherein the data packet comprises a PLMN identification code of the user side communication equipment;
the private network DU decodes a data packet sent by the private network AAU to an RLC layer through a High-PHY layer and an MAC layer in sequence, and then obtains the PLMN identification code in the data packet;
the private network DU determines whether the PLMN identification code obtained by decoding exists in the PLMN list or not;
if the data packet exists, the data packet is sent by private network user side communication equipment, and the private network DU sends the decoded data packet to the private network NGC;
if the data packet does not exist, the data packet is sent by the public network user side communication device, and the private network DU directly sends the decoded data packet to the public network CU through the first F1 interface.
8. The 5G communication method of claim 7, wherein the sending the decoded data packet to the private network NGC by the private network DU comprises:
the private network DU sends the decoded data packet to a private network CU included in the private network 5G base station through a second F1 interface;
and the private network CU sends the decoded data packet received from the second F1 interface to the private network NGC through a first Nx interface after sequentially processing the data packet through a PDCP layer and an RRC layer.
9. The 5G communication method of claim 7, wherein the sending the decoded data packet to the private network NGC by the private network DU comprises:
the private network DU sends the decoded data packet to a peripheral CU outside the private network 5G base station through a third F1 interface;
the peripheral CU is configured to send the decoded data packet received from the third F1 interface to the private network NGC through the second Nx interface after sequentially processing the data packet by the PDCP layer and the RRC layer.
10. A computer storage medium for a private network 5G base station, the computer storage medium storing at least one computer program for calling to perform the 5G communication method according to any one of claims 7-9.
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