WO2014056317A1 - 空口信息处理系统、方法及设备 - Google Patents
空口信息处理系统、方法及设备 Download PDFInfo
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- WO2014056317A1 WO2014056317A1 PCT/CN2013/074079 CN2013074079W WO2014056317A1 WO 2014056317 A1 WO2014056317 A1 WO 2014056317A1 CN 2013074079 W CN2013074079 W CN 2013074079W WO 2014056317 A1 WO2014056317 A1 WO 2014056317A1
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- air interface
- base station
- access network
- network controller
- enhanced base
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0019—Control or signalling for completing the hand-off for data sessions of end-to-end connection adapted for mobile IP [MIP]
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
Definitions
- the present invention relates to communications technologies, and in particular, to an air interface information processing system, method, and device. Background technique
- the radio access network is mainly composed of a base station (eNodeB), which is mainly responsible for radio resource management, IP data header compression, air interface encryption and decryption, and the like.
- eNodeB base station
- the interface between the user equipment (User Equipment, simply called UE) and the eNodeB belongs to the air interface.
- the protocol stack of the air interface can be divided into three layers: a physical layer (L1), a data link layer (L2), and a network layer (L3).
- L1 layer is mainly used to provide wireless physical channels for high-level services.
- the L2 layer mainly includes media access control (MAC) sub-layer and radio link control (Radio Link Control, RLC for short).
- Sub-layer Packet Data Convergence Protocol (PDCP) sub-layer three sub-layers; and L3 layer sub-layer, the lowest layer and L2 layer interface, recorded as Radio Resource Control (Radio Resource Control, referred to as For RRC), higher layer signaling such as Mobile Management (MM) and Call Control (CC) belong to the non-access segment and belong to the core network category.
- Radio Resource Control Radio Resource Control
- MM Mobile Management
- CC Call Control
- control plane C-plane
- user plane U-plane
- the various levels of the above air interface are mixed on the control plane and the user plane, and no separation is achieved.
- the scheme of separating the control plane and the user plane is mainly for the IP layer and the IP layer and above, which leads to the improvement of the core network layer in the wireless network, and the wireless access network is not included in the management scope.
- the bearer and control separation of the radio access network is not realized, which affects the performance of the overall network. Summary of the invention
- the present invention provides an air interface information processing system, method and device for implementing separation of a radio access network on a control plane and a user plane.
- One aspect is to provide an enhanced base station, including:
- Receiver configured to receive wireless control with air interface control function of the wireless access network through an open interface
- An air interface control policy sent by the access network controller where the air interface control policy is generated by the radio access network controller; the open interface is between the enhanced base station and the radio access network controller Interface;
- the processor is configured to perform air interface user plane data processing according to the air interface control policy.
- radio access network controller having an air interface control function of a radio access network, where the radio access network controller includes:
- a processor configured to generate an air interface control policy
- a transmitter configured to send the air interface control policy to the enhanced base station by using an open interface, so that the enhanced base station performs air interface user plane data processing according to the air interface control policy;
- the open interface is an interface between the radio access network controller and the enhanced base station.
- an air interface information processing system including: a radio access network controller and an enhanced base station;
- the radio access network controller has an air interface control function of the radio access network, and is configured to generate an air interface control policy, and send the air interface control policy to the enhanced base station by using an open interface; An interface between the radio access network controller and the enhanced base station; the enhanced base station, configured to receive the air interface control policy by using the open interface, and perform an air interface user according to the air interface control policy Processing of face data.
- an air interface information processing method including:
- the radio access network controller generates an air interface control policy, and the radio access network controller has an air interface control function of the radio access network;
- the radio access network controller sends the air interface control policy to the enhanced base station through an open interface, so that the enhanced base station performs air interface user plane data processing according to the air interface control policy.
- an air interface information processing method including:
- the enhanced base station receives an air interface control policy sent by a wireless access network controller having an air interface control function of the radio access network through an open interface, where the air interface control policy is generated by the radio access network controller;
- the enhanced base station performs air interface user plane data processing according to the air interface control policy.
- the line access network controller has an air interface control function of the radio access network, and the radio access network controller is responsible for generating an air interface control policy, and sends the air interface control policy to the enhanced base station, and the enhanced base station is responsible for performing the air interface according to the air interface control strategy.
- the processing of the user plane data, the radio access network controller is responsible for the processing of the air interface side control plane function of the radio access network, and the enhanced base station is responsible for processing the air interface side user plane function of the radio access network, realizing the radio access network.
- the separation of the control surface and the user plane is responsible for processing of the air interface side control plane function of the radio access network, realizing the radio access network.
- FIG. 1A is a schematic structural diagram of an air interface information processing system according to an embodiment of the present invention
- FIG. 1B is a flowchart of an example of a radio access network controller and an enhanced base station cooperated to complete control and bearer separation according to an embodiment of the present invention
- 1C is a flowchart of another example of a radio access network controller and an enhanced base station cooperating to complete control and bearer separation according to an embodiment of the present invention
- FIG. 2A is a schematic structural diagram of an air interface information processing system according to another embodiment of the present invention
- FIG. 2B is a schematic diagram of a No. C.
- the NoC provides a wireless L2 and L3 layer pair enhanced type by using a C3 interface to trigger a radio access network controller.
- 2C is a schematic diagram of a radio access network controller triggered by a C3 interface according to another embodiment of the present invention
- NoC performs a flow chart of an example of forwarding control of user plane data of layers of the enhanced base station with IP layers above the IP layer;
- 2D is a flowchart of another example of the radio access network controller triggering the NoC on the C3 interface to perform the forwarding control of the user plane data of each layer of the IP layer of the enhanced base station by using the C3 interface according to another embodiment of the present invention.
- FIG. 3 is a schematic diagram of a user plane and a control plane protocol stack of each network element in an air interface information processing system according to an embodiment of the present invention
- FIG. 6 is a schematic structural diagram of an air interface information processing system according to another embodiment of the present invention
- FIG. 7 is a schematic structural diagram of an air interface information processing system according to another embodiment of the present invention
- FIG. 8 is a schematic diagram of a wireless interface according to an embodiment of the present invention
- Schematic diagram of the network controller
- FIG. 9 is a schematic structural diagram of an enhanced base station according to an embodiment of the present invention.
- FIG. 10 is a flowchart of a method for processing air interface information according to an embodiment of the present invention.
- FIG. 11 is a flowchart of a method for processing air interface information according to another embodiment of the present invention.
- the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
- the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- the technical solution of the present invention proposes a network architecture and scheme for separating the control plane and the user plane in the radio access network.
- the core idea of the solution is: The function of the wireless L2 and L3 control planes is stripped from the access network base station, implemented by a separate functional entity, and coordinated with the core network control plane to implement end-to-end management of the user bearer, and wireless
- the L2 and L3 user plane functions are implemented by separate functional entities, and are mainly responsible for completing air interface user plane data processing.
- the air interface user plane data processing includes: data transmission, data segmentation, cascading, sorting, reassembly, discarding, data header Compression and decompression, data security protection, such as data encryption and decryption, integrity protection and so on.
- FIG. 1A is a schematic structural diagram of an air interface information processing system according to an embodiment of the present invention. As shown in FIG. 1A, the system of this embodiment includes: a radio access network controller 10 and an enhanced base station 20.
- the radio access network controller 10 has an air interface control function of the radio access network, and is mainly used to generate an air interface control policy, and the air interface control policy is sent to the enhanced base station 20 through the open interface.
- the enhanced base station 20 is configured to receive the air interface control policy delivered by the radio access network controller 10 through the open interface, and process the air interface user plane data according to the air interface control policy.
- the radio access network controller 10 and the enhanced base station 20 are located within the radio access network.
- the radio access network controller 10 belongs to the control plane network element in the radio access network, that is, the air interface control plane network element, and is mainly used to control the enhanced base station 20 to complete the processing of the air interface user plane data through the air interface control policy, specifically including the extraction.
- the functions of the wireless L2 and L3 layer protocol control planes include but are not limited to: radio resource allocation, uplink and downlink scheduling, scheduling priority selection, hybrid automatic repeat request (Hybrid Automatic Repeat Request, referred to as HARQ) retransmission, wireless chain Radio Link Control (RLC) connection control and management, protocol error detection and recovery, control plane protocol encryption and decryption, broadcast, paging, radio resource control (Radio Resource Control, RRC for short) connection management, Radio bearer management, mobility management, key management, UE measurement reporting and control, Multimedia Broadcast Multicast Service (MBMS) control, NAS message direct transmission, and Service of Service (QoS) ) Management and so on.
- radio resource allocation radio resource allocation
- uplink and downlink scheduling scheduling priority selection
- Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request, referred to as HARQ
- RLC Radio Link Control
- protocol error detection and recovery protocol error detection and recovery
- control plane protocol encryption and decryption broadcast, paging, radio resource control (Radio Resource Control, R
- the enhanced base station 20 belongs to the user plane network element in the radio access network, and is controlled by the radio access network controller 10 at the air interface level (or the Radio level), and is mainly completed under the control of the radio access network controller 10.
- the processing of the air interface user plane data specifically integrates the processing functions of all user planes of the wireless L2 and L3 layers, generally only has the user plane function, and the processing functions of all user planes of the wireless L2 and L3 layers include but are not limited to: data transmission, data division Segmentation, cascading, sorting, reassembly, discarding, compression and decompression of data headers, data security protection, such as data encryption and decryption, integrity protection, etc.
- the enhanced base station 20 may be various types of radio base stations of various standards, such as various macro base stations, micro base stations, and the like.
- the number of enhanced base stations 20 is large, that is, one radio access network controller 10 can simultaneously control a plurality of enhanced base stations 20, and the plurality of enhanced base stations 20 pass through an open interface and a radio access.
- the network controller 10 is connected and is controlled by the radio access network controller 10.
- the interface between the radio access network controller 10 and the enhanced base station 20 is an open interface, and may also be referred to as an open wireless (English OpenRadio) interface, but is not limited to the OpenRadio interface.
- the Open Radio interface is used to enable the enhanced base station 20 to implement the air interface side user plane function of the radio access network under the control of the radio access network controller 10, that is, to perform the air interface control function of the radio access network through the Open Radio interface.
- Open to the radio access network controller 10 the openness mentioned here is relative to the prior art, and the air interface control function in the prior art is encapsulated in an enhanced base station (eNodeB in English) in the LTE system.
- the encapsulation is implemented in a base station (NodeB in English) and a radio controller (RNC).
- RNC radio controller
- some or all of the air interface control functions are centralized to independent network elements, that is, radio access network control.
- the device 10 is implemented in the same manner as the existing eNodeB, or the NodeB and the RNC open the air interface control function to the radio access network controller 10 in this embodiment, so that relatively centralized control can be implemented, and the control flow can also be implemented.
- the Open Radio interface mainly carries the air interface control plane policy, because the L2 and L3 layer control plane functions of all air interfaces in the access network are concentrated in the radio access network controller 10 for processing.
- the strong base station 20 is only responsible for the corresponding user plane function. Therefore, when the air interface control is involved, the air interface control policy needs to be carried through the Open Radio interface, and the air interface control includes but is not limited to the scheduling of air interface resources (such as QoS control), paging. , broadcasting, etc. That is, the control plane functions of the radio L2 and L3 layers of the radio access network controller 10 need to be sent to the enhanced base station 20 through the Open Radio interface.
- the enhanced base station 20 can also actively request some control policies from the radio access network controller 10 through the Open Radio interface. That is, the enhanced base station 20 is further configured to send an air interface policy request to the radio access network controller 10 before receiving the air interface control policy. In this way, the radio access network controller 10 generates and delivers an air interface control policy for the enhanced base station 20 according to the air interface policy request.
- radio access network controller 10 and the enhanced base station 20 in this embodiment are similar to the prior art by using some basic processes, such as bearer establishment and mobility management, which are not described in detail.
- FIG. 1B An example is given below to illustrate how the radio access network controller 10 and the enhanced base station 20 cooperate to complete the entire process of control and bearer separation. Assume that the new user accesses the enhanced base station 20 that is currently connected by the UE of the user to trigger the radio access network controller 10 to perform radio resource allocation for the user.
- the specific process is as shown in FIG. 1B, and includes:
- Step S1 The user accesses the network, and the enhanced base station 20 discovers the new user, and determines that the UE needs to request the radio resource for the UE.
- Step S2 Since the enhanced base station 20 has only the user plane function and does not have the control plane resource allocation function, the radio resource allocation request is sent to the radio access network controller 10 through the Open Radio interface, and the radio resource allocation request carries the UE.
- the user flag is for the radio access network controller 10 to perform storage and subsequent identification.
- Step S3 After receiving the radio resource allocation request, the radio access network controller 10 may obtain related information of the UE from the core network side according to the user identifier of the UE, and then according to the locally stored radio resource utilization situation and related information of the acquired UE. And other information, allocate radio resources to the UE.
- the radio resources here can be a certain number of channels, time slots, even the priority of transmission, and the like.
- Step S4 The radio access network controller 10 sends a radio resource allocation response to the enhanced base station 20, where the radio resource allocation response includes the resource allocation result.
- Step S5 After receiving the radio resource allocation response, the enhanced base station 20 performs user plane data operations of the UE, such as transmitting data packets, on the radio resources allocated by the radio access network controller 10.
- the radio resource allocation request is an air interface policy request
- the radio resource allocation result is an air interface control policy.
- the radio access network controller 10 and the enhanced base station 20 cooperate with the entire process of performing control and bearer separation.
- the coverage of an enhanced base station 20 is too large, the number of access users is too large, which may cause the enhanced base station 20 to be overloaded, which has a greater impact on the QoS experience of the user, especially the cell edge user.
- the QoS experience of the cell edge user is poor, and the experience level breaks the preset experience threshold. For example, the delay of the user receiving the service is greater than the preset delay threshold. Or the user receives the video/voice service resolution less than the preset resolution threshold and the like.
- the problem of fairness of the user at the edge of the cell can be solved by forcing the cell edge user to implement the multi-base station joint processing technology.
- the cooperation between the radio access network controller 10 and the enhanced base station 20 is required.
- the specific process is as shown in FIG. 1C, and includes:
- step A1 the enhanced base station 20 finds that there are too many users accessing the coverage area, and the service throughput of the edge users under the coverage of the enhanced base station does not meet the service throughput requirement, and/or the user experience of the access enhanced base station.
- the degree of the preset experience threshold is broken, that is, the current situation is found to satisfy at least one of the preset trigger conditions.
- Step A2 The enhanced base station 20 sends a neighbor cell measurement request to the UE, and triggers the UE to perform a neighbor cell measurement process.
- the measurement of the neighboring cell here mainly refers to a process of acquiring various parameters capable of reflecting the current performance state of the neighboring cell, for example, including measurement of signal strength of the neighboring cell, measurement of the number of UEs in the adjacent cell, and the like.
- Step A3 The UE reports the neighbor cell measurement result to the enhanced base station 20.
- the UE only the neighboring cell of the UE is used as the first enhanced base station, and the UE may actually have multiple neighboring cells.
- Step A4 The enhanced base station 20 sends an abnormality processing request to the radio access network controller 10, where the abnormal processing request includes the neighboring cell measurement result, and further includes: information such as insufficient user resources.
- Step A5 After receiving the exception processing request sent by the enhanced base station 20, the radio access network controller 10 generates a joint processing policy. Specifically, the radio access network controller 10 can combine the neighboring cell topology and neighbor cell measurement results of the enhanced base station 20 with locally stored backhaul information to make a joint processing strategy.
- the radio access network controller 10 may make different places according to actual conditions. For example, the decision is to move the user at the cell edge of the enhanced base station 20 to a cell that is relatively idle (referred to as a cell migration policy), or the decision-making enhanced base station 20 maintains the existing state, etc.
- the network controller 10 decides to implement the multi-cell joint processing for the enhanced base station 20 as an example.
- the radio access network controller 10 not only decides to implement multi-cell joint processing for the enhanced base station 20, but also decides other information related to the joint processing, such as which of the enhanced base stations involved, Which joint processing algorithm is used, the types of information that can be shared between enhanced base stations, and so on.
- the radio access network controller 10 selects the enhanced base station 20 and the first enhanced base station to perform joint processing as an example, and the joint processing algorithm may select various joint processing algorithms of the prior art.
- Step A6 The radio access network controller 10 delivers a joint processing policy to the enhanced base station 20 and the first enhanced base station.
- Step A7 The enhanced base station 20 and the first enhanced base station perform joint processing for the UE according to the joint processing policy delivered by the radio access network controller 10.
- the subsequent steps include: the radio access network controller 10 delivers the made control policy to the enhanced a type of base station (ie, a source enhanced base station), which includes details of the policy (that is, the edge user is moved to the neighboring cell) and the identity of the enhanced base station (ie, the enhanced base station) to which the mobile station is moved, and the radio access network control
- the device 10 also sends a similar control policy to the enhanced base station in the neighboring cell to be moved to notify the enhanced base station of the cell that there will be a new user to move in, and the source enhanced base station and the enhanced type to be moved to
- the base station starts to perform the handover process of the edge user, and the process is similar to the user switch in the prior art, and details are not described herein again.
- the above exception handling request is an air interface policy request, and correspondingly, the joint processing policy or the cell migration policy is an air interface control policy.
- a similar procedure can be used to implement the control of the radio access network controller 10 for other operations of the enhanced base station 20, such as data encryption mode control, scheduling priority. Level control, control of multicast broadcasts, etc.
- the control plane function of the radio access network controller 10 can be communicated to the enhanced base station 20 by a similar process. This control process can be triggered by the request of the enhanced base station 20, or can be The radio access network controller 10 actively sends a control policy to the enhanced base station 20, and the enhanced base station 20 is responsible for performing corresponding operations on the user plane according to the control result of the radio access network controller 10.
- the embodiment implements the control plane functions of the L2 and L3 layers in the radio access network through the radio access network controller, and implements the user plane functions of the L2 and L3 layers in the radio access network through the enhanced base station, thereby realizing The separation of the control plane and the user plane improves the performance of the overall network.
- FIG. 2A is a schematic structural diagram of an air interface information processing system according to another embodiment of the present invention. The embodiment is implemented based on the embodiment shown in FIG. 1A. As shown in FIG. 2A, the air interface information processing system of this embodiment further includes: a network controller (Network Controller, NoC) 30.
- Network Controller NoC
- the NoC30 is configured to generate a data forwarding policy for the user planes of the IP layer and the IP layer and above, and send the data forwarding policy to the enhanced base station 20. Based on this, the enhanced base station 20 is further configured to receive the data forwarding policy sent by the NoC30, and process the user plane data of each layer above the IP layer and the IP layer according to the data forwarding policy.
- the processing of user plane data on the IP layer and above the IP layer includes but is not limited to:
- the NoC30 is located in the core network and is the main control plane network element of the core network. It is mainly responsible for the development of the user plane data forwarding strategy. Specifically, the NoC30 can generate IP layers and IP layers based on network status information and/or user information.
- the data forwarding policy of the user plane is provided to the enhanced base station 20 to enable the enhanced base station 20 in the access network to route the user plane data of the IP layer and the IP layer above the IP layer according to the data forwarding policy.
- the data forwarding policy includes the information that the enhanced base station 20 forwards the user plane data to, or who forwards the user plane data, or from whom the user plane data is received.
- the NoC30 can perform end-to-end bearer management in addition to the function of establishing a data forwarding policy.
- the NoC30 can process various requests sent by the radio access network controller 10 from the access network, such as a bearer setup request.
- the user status information includes whether the user has moved or switched, from which enhanced base station 20 is cut, or whether the user initiates a new session, etc.; the network status information includes that the resource usage of an enhanced base station 20 in the network is saturated. Can no longer accept new business and so on.
- the interface between the NoC30 and the enhanced base station 20 is called a C2 interface, but is not limited to the name of the C2 interface.
- the C2 interface mainly carries the control plane signaling (ie, the data forwarding policy) of the IP layer and the IP layer and the above layers. That is, the enhanced base station 20 receives the IP layer delivered by the NoC30 and the data of the user planes above the IP layer. Forward the policy and route the data according to the data forwarding policy.
- the data here mainly refers to the data above the IP layer and the IP layer.
- the NoC30 can control and manage the enhanced base station 20 by using an OpenFlow (OF) protocol. From the perspective of the C2 interface, the relationship between the NoC30 and the enhanced base station 20 is similar to the OF controller. (OF Controller and OF Switch, it can be understood that the C2 interface is carried on the OF protocol. The OF protocol is described in detail below.
- OF is a switching technology
- OF network architecture mainly includes: OF switch and OF controller.
- the OF switch is the core component of the entire OF network, and mainly manages the forwarding of the data layer.
- Each OF switch has a flow table (flow table in English) for packet lookup and forwarding.
- the OF switch can connect to the external controller through the OF protocol through a secure channel to query and manage the flow table.
- the OF switch After receiving the data packet, the OF switch first searches for the forwarding destination port on the local flow table. If there is no match, the data packet is forwarded to the OF controller, and the control layer determines the forwarding port.
- the OF controller implements the function of the control layer.
- the OF controller controls the flow table in the OF switch through the standard interface of the OF protocol, thereby implementing centralized control of the entire network.
- the flow table of OF consists of ⁇ multiple flow entries, and each flow entry is a forwarding rule.
- the data packet entering the OF switch is obtained by querying the flow table to obtain the forwarded destination port.
- Each flow entry (entry) in the OF flow table supports three parts: rules, operations, and status.
- the rule is used to define the flow (flow is English).
- the flow definition in the OF protocol is very broad. It supports 10 domains.
- the switch port, Ethernet type, and Vlan lD are added.
- the header field is a ten-element.
- a group is an identifier of a flow entry.
- An operation is a behavior such as forwarding, discarding, etc. The operation indicates the operation that the packet matching the flow entry should perform.
- the status section is the statistics used primarily for traffic.
- the key feature of the OF protocol is to support remote control.
- you can define some special rules in the normal running network, so that the traffic conforming to the rules can follow any path as required, just as if a physical network is cut into several different virtual networks and run simultaneously. And each does not interfere.
- the OF protocol transforms the traditional physical fixed hardware Internet into a dynamically variable software-defined Internet.
- a software-defined controllable Internet in addition to being more flexible, will undoubtedly greatly improve the robustness, operational efficiency and security of the network itself through appropriate control algorithms.
- the NoC30 in this embodiment can manage the enhanced base station 20 by using the OF protocol, and has the advantages of flexibility, convenience, and high operational efficiency.
- the NoC 30 can also use the protocol to manage the enhanced base station 20.
- the radio access network controller 10 can also use a similar TO association.
- the control of the flow table form manages the enhanced base station 20, wherein the radio access network controller 10 and the enhanced base station 20 respectively correspond to the OF controller and the OF switch in the OF network.
- the NoC30 and the radio access network controller 10 may be deployed separately or in combination.
- the C3 interface and the radio access network are required.
- the controller 10 interacts.
- the interface between the NoC30 and the radio access network controller 10 is referred to as a C3 interface, but is not limited to the C3 interface.
- the C3 interface is mainly used to carry the control information of the air interface reported by the radio access network controller 10 to the NoC30, and the end-to-end control information sent by the NoC30 to the radio access network controller 10.
- the NoC 30 further stores user service information, user status information, and/or user identification information, and the NoC 30 may actively trigger some control on the access network according to the change of the information, and affect the access.
- the intra-network radio access network controller 10 controls the air interface of the enhanced base station 20 to indirectly control the air interface.
- the NoC30 is further configured to send user information to the radio access network controller 10, so that the radio access network controller 10 generates an air interface control policy according to the user information.
- the radio access network controller 10 is specifically configured to receive user information sent by the NoC30, and generate an air interface control policy according to the user information.
- the user information includes user service information, user status information, and/or user identification information, and the like.
- the user status information includes whether the user is currently active (active in English) or idle (in English), and the user service information includes user subscription information, user QoS information, and the like. For example, if the user service information sent by the NoC30 to the radio access network controller 10 indicates that the user initiates or receives a new service, the radio access network controller 10 makes a decision for the user's new The service allocates radio resources, indicating which one or more of the enhanced base stations 20 to forward the new service related data packet (ie, the air interface control policy).
- the user status information sent by the NoC30 to the radio access network controller 10 indicates that the user in the current idle (idle) state is under the coverage of one or some of the enhanced base stations 20, and then the wireless connection
- the network access controller 10 can make a decision as to which enhanced base station 20 initiates a paging operation (i.e., an air interface control policy).
- the NoC 30 triggers the radio access network controller 10 to perform control of the enhanced base station 20 by the radio L2 and L3 layers through the C3 interface.
- the NoC30 stores some information related to the user service, such as QoS information, and the NoC30 sends the QoS information to the radio access network controller 10 for the purpose of improving system resource utilization or meeting user QoS requirements.
- the radio access network controller 10 re-adjusts the resource allocation scheme, and adjusts the single/multiple enhanced type
- the resources occupied by the base station 20 feed back the resource allocation result to the single/multiple enhanced base stations 20, and the enhanced base station 20 transmits the data on the newly allocated resources according to the received resource allocation result.
- the specific process is shown in Figure 2B, including:
- Step D1 When the UE enters the network, it negotiates a QoS policy with the NoC30, and the NoC30 stores the QoS information of the UE, or the NoC30 obtains the QoS information of the UE from the UE or the application server.
- Steps D2 and NoC30 send the QoS information of the UE to the radio access network controller 10 through the C3 interface.
- Step D3 After receiving the QoS information delivered by the NoC30, the radio access network controller 10 re-adjusts the L2 layer resource allocation scheme and adjusts the single or multiple enhanced types for the purpose of improving system resource utilization or meeting user QoS requirements.
- the resources here may be channels, time slots, scheduling priorities, and the like.
- the single or multiple enhanced base stations 20 can be adjusted because one radio access network controller 10 can control a plurality of enhanced base stations 20. In order to meet the demand, the radio access network controller 10 may adjust more than one at the same time.
- the resource allocation scheme of the enhanced base station 20 A plurality of enhanced base stations 20 are indicated by ellipsis in Fig. 2B.
- Step D4 The radio access network controller 10 sends the resource allocation result to the single or multiple enhanced base stations 20.
- Step D5 After receiving the resource allocation result, the single or multiple enhanced base stations 20 transmit data on the re-allocated resources.
- the NoC30 can trigger the wireless access by sending other information, such as the service information of the user, the network topology information, etc., in addition to the process of the QoS information being used to trigger the radio access network controller 10 to re-allocate the resources according to the QoS information.
- the network controller 10 controls the other operations of the enhanced base station 20 in the air interface. The specific control process is similar to the foregoing process, and details are not described herein.
- the radio access network controller 10 is further configured to send network status information and/or user status information to the NoC 30, so that the NoC 30 generates an IP according to the network status information and/or the user status information. Data forwarding strategy for user planes at layers and above IP layers.
- the NoC 30 may pre-store the network status information and/or the user status information locally.
- the network status information includes network topology information, user UE information, and the like.
- the radio access network controller 10 triggers the NoC30 through the C3 interface to perform forwarding control on the IP plane of the enhanced base station 20 with user plane data of layers above the IP layer.
- the radio access network controller 10 learns the change of the network topology information in the access network, and reports the change of the network topology information to the NoC30. Then, the NoC30 adjusts the user plane forwarding policy accordingly, and sends the adjusted user plane forwarding policy.
- the enhanced base station 20 performs the IP layer to forward the user plane data of each layer above the IP layer according to the new user plane forwarding policy.
- the specific process is shown in Figure 2C, including:
- Step El. The radio access network controller 10 senses changes in network topology information. This change can be perceived by the radio access network controller 10 itself, or it can be communicated to the radio access network controller 10 by other network elements (e.g., the enhanced base station 20).
- Step E2 The radio access network controller 10 notifies the NoC30 of the change of the network topology information through the C3 interface.
- Steps E3 and NoC30 receive the change information of the network topology sent by the radio access network controller 10, and then re-define the user plane forwarding policy according to the new network topology information.
- the user plane forwarding policy here is mainly for the user plane data of the IP layer above the IP layer, and the policy includes information such as which enhanced base stations 20 forward data.
- Steps E4 and NoC30 send a new user plane forwarding policy to the corresponding enhanced base station 20 through the C2 interface.
- Step E5 After receiving the new user plane forwarding policy, the enhanced base station 20 triggers the NoC30 to re-define and deliver the user plane forwarding according to the change of the network topology information in addition to the radio access network controller 10 given above.
- the radio access network controller 10 may also trigger the NoC30 to re-define and deliver the user plane forwarding policy according to other information, such as user mobility information, and the specific implementation process is as shown in FIG. 2D.
- Step F1 the enhanced base station senses that the user has moved, and the source enhanced base station switches to the enhanced base station (ie, the target enhanced base station), between the enhanced base station, the source enhanced base station, and the radio access network controller.
- the enhanced base station ie, the target enhanced base station
- the user mobility switching process is performed, and the switching process is prior art, and details are not described herein again.
- Step F2 The radio access network controller sends the handover information to the NoC, where the handover information includes the identifier of the source enhanced base station and the identifier of the enhanced base station, where the identifier may be, for example, an IP address, etc., for NoC identification.
- the steps F3 and NoC re-based the enhancement according to the position after the UE moves.
- Base station the data plane forwarding strategy of the user planes of the above layers.
- the data plane forwarding policy includes information such as which user plane data is forwarded by the enhanced base station.
- the data plane forwarding policy mainly includes: indicating that the user plane data of the UE is forwarded by the enhanced base station, and the source The enhanced base station stops forwarding information of the user plane data of the UE.
- Steps F4 and NoC send the data plane forwarding policy to the corresponding enhanced base station (that is, at least one of the source enhanced base station and the destination enhanced base station) through the C2 interface. If only one of the source enhanced base station and the destination enhanced base station is sent, the subsequent may be accompanied. The process of the base station receiving the forwarding policy forwarding the forwarding policy to another base station).
- Step F5. The enhanced base station and/or the source enhanced base station perform the data plane forwarding policy.
- the radio access network controller of the embodiment is further configured to send the handover information to the network controller, where the handover information is that the radio access network controller detects that the UE switches from the source enhanced base station to the handover.
- the handover information After the enhanced base station transmits, the handover information includes an identifier of the source enhanced base station and an identifier of the enhanced base station to which the handover is performed.
- the network controller is specifically configured to generate a data forwarding policy after receiving the foregoing switching information.
- the above NoC30 triggers the radio access network controller 10 to perform wireless through the C3 interface.
- the flow control of the enhanced base station 20 by the L2 and L3 layers is performed, and the radio access network controller 10 triggers the NoC 30 through the C3 interface to perform forwarding control of the user plane data of the IP layer of the enhanced base station 20 at each layer above the IP layer.
- the process can be carried out at the same time, so that it is completely formed in this embodiment.
- the NoC30, the radio access network controller 10, and the enhanced base station 20 cooperate with each other to implement an interface between the control plane and the user plane.
- control plane and the user plane of the radio access network are separated by the cooperation of three functional entities and interfaces between them, and the control plane is divided into a core network (IP layer and above and above IP layer) Layer) and air interface (wireless L2 and L3 layers)
- IP layer and above and above IP layer IP layer and above and above IP layer
- air interface wireless L2 and L3 layers
- the radio access network controller 10 mainly formulates and delivers air interfaces (ie, wireless L2 and L3 layers).
- Control strategy two levels of control network elements can be integrated in the actual deployment, or can be deployed separately. When deployed separately, the control signaling carried by the interface between the two network elements can achieve mutual interaction between the two.
- the primary network element enhanced base station of the user plane accepts wireless in the air interface
- the control of the access network controller, and the control management of the NoC is accepted at the IP layer and the IP layer and above.
- the user plane protocol stack of each network element in this embodiment is as shown in FIG. 3.
- the user plane protocol stack of the enhanced base station 20 mainly includes a UE-oriented and an application-oriented server (APP Server).
- the user plane protocol stack of the enhanced base station 20 for the UE is: PHY, MAC, RLC and PDCP layers from bottom to top;
- the user plane protocol stack for the application server is: LI, L2 and IP1 layers from bottom to top.
- the user plane protocol stack of the UE is from bottom to top: PHY, MAC, RLC, PDCP, IP1, TCP/UDP and APP layers.
- the user plane protocol stack of the application server is from bottom to top: Ll, L2, IP1 TCP/UDP, and APP layer.
- the enhanced base station 20 can receive user plane data from the application server under the control of the NoC 30, and the enhanced base station 20 can also receive the received base station 20 under the control of the radio access network controller 10.
- User plane data of the UE is as shown in FIG. 4, and is not specifically described in detail.
- IP1, L2, and L1 in FIG. 3 respectively represent an IP layer (also referred to as a network layer, English network layer) in the 7-layer protocol stack of the International Organization for Standardization (ISO).
- the second layer also known as the data link layer, the English data link layer
- one layer also known as the physical layer, the English is the physical layer
- the OR in Figure 4 represents the Open Radio interface layer
- C3 represents the C3 interface layer
- C2 in Figure 5 represents the C2 interface layer.
- At least two enhanced base stations 20 are present in the air interface information processing system of this embodiment.
- the radio access network controller 10 is further configured to jointly process the physical layer functions of the at least two enhanced base stations 20.
- the physical layer function here is also the function of the L1 layer on the wireless side, such as coding and decoding, modem, multi-antenna mapping and other typical physical layer functions.
- the process of jointly processing the L1 layer functions of two or more enhanced base stations 20 is called Joint Processing (abbreviated as JP). Since the joint computing requires very high resources, the joint processing function is deployed in the radio access network controller instead of being dispersed in each enhanced base station 20. This centralized deployment method enables efficient resource utilization and can also reduce the enhancement. Mutual transmission between type base stations 20.
- the radio access network controller 10 can jointly process the physical layer functions of the enhanced base stations 20 by using an existing algorithm, and the specific process is not described in detail.
- the air interface information of this embodiment is The system also includes: a joint processing device 40.
- the joint processing device 40 is connected to each enhanced base station 20 for jointly processing physical layer functions of at least two enhanced base stations 20.
- the joint processing device 40 can also jointly process the physical layer functions of the enhanced base stations 20 by using an existing algorithm, and the specific process is not described in detail. It is explained herein that the joint processing device 40 is independent of the radio access network controller 10.
- the functional entity that performs the joint processing on the physical layer functions of the enhanced base stations 20 can be located in the same physical network element as the radio access network controller 10, that is, can be executed by the radio access network controller 10, or It is located in a different physical network element than the radio access network controller.
- the air interface information processing system of this embodiment further includes: a domain router (DR) 50.
- the DR 50 is configured to receive the data forwarding policy sent by the NoC30, and process the user plane data of the IP layer and the IP layer and above according to the data forwarding policy.
- the processing of the user plane data of the IP layer and the IP layer and above is also included, but not limited to: Transceiving and processing the user plane data of the IP layer and the IP layer and above.
- the DR50 is further configured to allocate an IP address to the UE, send the allocated IP address to the UE, and report the allocated IP address to the NoC30.
- the DR50 may report the identifier of the UE to the NoC30.
- the NoC 30 receives information such as the assigned IP address and the identity of the UE reported by the DR 50, and facilitates the formulation of the data forwarding policy based on the information.
- the DR 50 of the embodiment has a processing function of an IP layer and a user plane of each layer above the IP layer, and has an interface with the Internet (in English), located at a domain edge location, and may be located in the core network or in the access network. (The situation in the core network is illustrated in Figure 7.) It is responsible for data transmission and reception according to the data forwarding policy delivered by the NoC30. In addition, it can also participate in the process of bearer establishment and handover. In addition, the DR50 can also be responsible for the management, maintenance, distribution, and delivery of IP addresses. Different access systems can be connected to different DR50s, and each DR50 can be interconnected to achieve interworking. More preferably, the DR 50 is deployed at a location-independent network level.
- the NoC30 and DR50 are connected through the C1 interface, and the interface between the NoC30 and the DR50 is called
- the C1 interface can be used to transmit various control policies that the NoC30 delivers to the DR50.
- the control of the DR50 by the NoC30 is mainly to control the routing and forwarding of the DR50 by issuing a data forwarding policy, and also includes control such as UE switching.
- the NoC30 can control the DR50 by using the OF protocol. From the perspective of the C1 interface, the relationship between the NoC30 and the DR50 is similar to the OF controller and the OF switch in the OF protocol, and the C1 interface can be specifically learned from the OF protocol. Interface to achieve, but not Limited to this.
- the DR 50 can also be connected to the enhanced base station 20 for forwarding user plane data between the IP layer and the IP layer and above, and implementing the user plane function in the entire network.
- the interface between the DR 50 and the enhanced base station 20 is an IP-based interface, and the transmission is mainly the user plane data of the IP layer and the IP layer and above.
- the joint processing device 40 is an optional network element.
- FIG. 8 is an implementation of the present invention.
- the radio access network controller of this embodiment has an air interface control function of the radio access network.
- the radio access network controller of this embodiment includes: a processor 81 and a transmitter 82.
- the processor 81 is configured to generate an air interface control policy.
- the transmitter 82 is connected to the processor 81, and configured to send the air interface control policy generated by the processor 81 to the enhanced base station through the open interface, so that the enhanced base station performs air interface user plane data processing according to the air interface control policy.
- the open interface is an interface between the radio access network controller and the enhanced base station in the embodiment, and is used to enable the enhanced base station to implement radio access under the control of the radio access network controller in this embodiment.
- the air interface side user interface function of the network Compared with the prior art, the enhanced base station opens the air interface control function of the radio access network originally implemented by the enhanced base station to the wireless access network controller of the embodiment through the open interface.
- the radio access network controller in this embodiment may be specifically the control plane network element in the radio access network.
- the radio access network controller in this embodiment may be specifically the control plane network element in the radio access network.
- the radio access network controller further includes: a receiver 83.
- the receiver 83 is configured to receive user information sent by the NoC in the core network, and provide the user information to the processor 81.
- the processor 81 is also coupled to the receiver 83 for generating an air interface control policy based on the user information received by the receiver 83.
- the user information includes user service information, user status information, and/or user identification information.
- the user status information includes whether the user has moved or switched, from which enhanced base station 20 has been cut, and the user service information includes whether the user initiates a new session, the user's QoS information, and the like.
- the transmitter 82 is further configured to send network status information and/or user status information to the NoC in the core network, so that the NoC formulates an IP according to the network status information and/or the user status information.
- Data forwarding strategy for user planes at layers and above IP layers The data forwarding strategy is used to enable the enhanced base station to process user plane data of each layer above the IP layer and the IP layer.
- the transmitter 82 is further configured to send the handover information to the NoC in the core network, so that the NoC re-establishes the IP layer and the IP layer for the enhanced base station, and the The data forwarding policy of the user layer of the IP layer and the IP layer is sent to at least one of the source enhanced base station before handover and the enhanced base station after handover, and if only one base station is delivered, subsequent It may be accompanied by a process in which a base station that receives a forwarding policy forwards the forwarding policy to another base station.
- the handover information is discovered by the radio access network controller of this embodiment.
- the handover information includes an identifier of the source enhanced base station and an identifier of the enhanced base station.
- the air interface control corresponding to the air interface control policy in this embodiment includes any one or a combination of the following: radio resource allocation, uplink and downlink scheduling, scheduling priority selection, HARQ retransmission, RLC connection control and management, protocol error detection and recovery, Control plane protocol encryption and decryption, broadcast, paging, RRC connection management, radio bearer management, mobility management, key management, UE measurement reporting and control, MBMS control, NAS message direct transmission and QoS management.
- the transmitter 82 of this embodiment is specifically configured to send an air interface control policy to at least two enhanced base stations through an open interface.
- the processor 81 of this embodiment is further configured to perform joint optimization processing on physical layer functions of at least two enhanced base stations.
- the receiver 83 is further configured to: before the processor 81 generates the air interface control policy, receive an air interface policy request sent by the enhanced base station to request the air interface control policy, and adopt an air interface policy. The request is sent to the processor 81, causing the processor 81 to generate an air interface control policy for the enhanced base station based on the air interface policy request.
- the air interface policy request is an exception processing request
- the air interface control policy is a joint processing policy or a cell migration policy
- the receiver 83 is specifically configured to receive, by using an open interface, an exception processing request sent by the enhanced base station, where the exception processing is performed.
- the request includes the neighbor cell measurement result reported by the UE.
- the processor 81 is specifically configured to perform processing and determining, and generate according to the measurement result of the neighboring cell.
- the joint processing policy or the cell migration policy is provided to the transmitter 82.
- the transmitter 82 is specifically configured to send the joint processing policy or the cell migration policy to the enhanced base station through the open interface.
- the air interface control is a radio resource allocation
- the air interface policy request is a radio resource allocation request
- the air interface control policy is a radio resource allocation result
- the receiver 83 is further configured to receive, by using an open interface, the radio resource allocation sent by the enhanced base station. Requested and provided to processor 81.
- the wireless resource allocation request is sent by the enhanced base station when the new user accesses the enhanced base station.
- the processor 81 is configured to perform resource allocation according to the radio resource allocation request received by the receiver 83, generate a radio resource allocation result, and provide the result to the transmitter 82.
- the transmitter 82 is specifically configured to send the radio resource allocation result to the enhanced base station through the open interface.
- the transmitter 82 is specifically configured to send, by using an open interface, a radio resource allocation response message to the enhanced base station.
- the radio resource allocation response message carries a radio resource allocation result.
- the interface between the radio access network controller and the enhanced base station is referred to as an OpenRadio interface
- the interface between the radio access network controller and the NoC is referred to as a C2 interface.
- OpenRadio interface the interface between the radio access network controller and the NoC
- C2 interface the interface between the radio access network controller and the NoC
- the radio access network controller of the embodiment and the enhanced base station cooperate with each other to implement the control plane function of the air interface of the radio access network, and the enhanced base station implements the function of the user plane, so that the control plane of the radio access network and The separation of user planes, so that the access network is included in the management scope, improves the performance of the overall network.
- FIG. 9 is a schematic structural diagram of an enhanced base station according to an embodiment of the present invention. As shown in FIG. 9, the enhanced base station of this embodiment includes: a receiver 91 and a processor 92.
- the receiver 91 is configured to receive, by using an open interface, an air interface control policy sent by a radio access network controller with an air interface control function of the radio access network.
- the processor 92 is connected to the receiver 91 and configured to process the air interface user plane data according to the air interface control policy received by the receiver 91.
- the above-mentioned open interface is an interface between the enhanced base station and the radio access network controller of the embodiment, and is used to enable the enhanced base station of the embodiment to implement the air interface of the radio access network under the control of the radio access network controller.
- Side user plane function Compared with the prior art, the enhanced base station of the embodiment opens the air interface control function of the radio access network originally implemented by the enhanced base station to the wireless connection through its open interface with the radio access network control. Network controller.
- the enhanced base station in this embodiment may be a user plane network element in the radio access network.
- the receiver 91 is further configured to receive a data forwarding policy of the IP layer sent by the NoC in the core network and the user planes of the layers above the IP layer.
- the processor 92 is further configured to perform processing on user plane data of each layer above the IP layer and the IP layer according to the data forwarding policy received by the receiver 91.
- the air interface control corresponding to the air interface control policy in this embodiment includes any one or a combination of the following: radio resource allocation, uplink and downlink scheduling, scheduling priority selection, HARQ retransmission, RLC connection control and management, protocol error detection and recovery, Control plane protocol encryption and decryption, broadcast, paging, RRC connection management, radio bearer management, mobility management, key management, UE measurement reporting and control, MBMS control, NAS message direct transmission and QoS management.
- the enhanced base station of this embodiment further includes: a transmitter 93.
- the transmitter 93 is configured to send an air interface policy request to the radio access network controller by using the foregoing open interface, to request the air interface control policy from the radio access network controller, so that the radio access network controller according to the request is the embodiment.
- the enhanced base station generates and delivers an air interface control policy.
- the air interface control is a radio resource allocation
- the transmitter 93 is specifically configured to: when the new user accesses the enhanced base station of the embodiment, send a radio resource allocation request to the radio access network controller through the open interface, and the radio access
- the network controller receives the radio resource allocation request, generates a radio resource allocation result for the enhanced base station of the embodiment, and returns a radio resource allocation response message.
- the above radio resource allocation request includes a user flag of the new user.
- the receiver 91 is specifically configured to receive, by using an open interface, a radio resource allocation result sent by the radio access network controller.
- the receiver 91 is configured to receive, by using an open interface, a radio resource allocation response message sent by the radio access network controller.
- the radio resource allocation response message carries a radio resource allocation result.
- the air interface policy request is an exception processing request
- the air interface control policy is a joint processing policy or a cell migration policy
- the transmitter 93 is further configured to send a neighbor cell measurement request to the UE when the preset trigger condition is met.
- the UE is triggered to perform a neighbor cell measurement process.
- the preset triggering condition includes any one of the following conditions or a combination thereof:
- the number of users accessing the enhanced base station in this embodiment is greater than a preset number threshold; the throughput of the edge user covered by the enhanced base station does not satisfy the throughput.
- the user experience of the enhanced base station in this embodiment breaks the preset experience threshold.
- the receiver 91 is further configured to receive the neighbor cell measurement result sent by the UE.
- the transmitter 93 is specifically configured to: after receiving the measurement result of the neighboring cell sent by the UE, the receiver 91 sends an abnormal processing request to the radio access network controller by using an open interface, where the abnormal processing request includes the foregoing neighboring cell measurement result, And causing the radio access network controller to determine an air interface control policy according to the neighbor cell measurement result.
- the receiver 91 is specifically configured to receive, by using an open interface, a joint processing policy or a cell migration policy sent by the radio access network controller, where the joint processing policy or the cell migration policy is determined by the radio access network controller according to the measurement result of the neighboring cell. of.
- the interface between the enhanced base station and the radio access network controller is called Open.
- the Radio interface is called the C3 interface between the enhanced base station and the NoC.
- the Radio interface refer to the embodiment of the air interface information processing system, and details are not described herein again.
- the enhanced base station and the radio access network controller of the embodiment cooperate with each other to implement the function of the user plane, and the radio access network controller implements the control plane function of the air interface of the radio access network, so that the radio access network
- FIG. 10 is a flowchart of a method for processing air interface information according to an embodiment of the present invention. As shown in FIG. 10, the method in this embodiment includes:
- Step 1001 The radio access network controller generates an air interface control policy, where the radio access network controller has an air interface control function of the radio access network.
- Step 1002 The radio access network controller sends the air interface control policy to the enhanced base station through the open interface, so that the enhanced base station performs air interface user plane data processing according to the air interface control policy.
- the open interface is an interface between the radio access network controller and the enhanced base station, and is used to enable the enhanced base station to implement an air interface user of the radio access network under the control of the radio access network controller. Face function.
- the enhanced base station opens the air interface control function of the radio access network originally implemented by the enhanced base station to the radio access network controller through its open interface with the radio access network control. .
- the process for the radio access network controller to generate the air interface control policy includes: the radio access network controller receives the user information sent by the network controller in the core network, where the user information includes User service information, user status information, and/or user flag information; the radio access network controller generates the air interface control policy according to the user information.
- the user service information includes user QoS information.
- the air interface control corresponding to the air interface control policy includes any one or a combination of the following: radio resource allocation, uplink and downlink scheduling, scheduling priority selection, HARQ retransmission, RLC connection control and management, protocol error detection and recovery, and control plane protocol. Encryption and decryption, broadcast, paging, RRC connection Management, radio bearer management, mobility management, key management, UE measurement reporting and control, MBMS control, NAS message direct transmission and QoS management.
- the air interface information processing method further includes: the radio access network controller sending network state information and/or user state information to a network controller in the core network, so that the network control Determining, according to the network state information and/or the user state information, a data forwarding policy of the user planes of the IP layer and the IP layer and above, where the data forwarding policy is used to enable the enhanced base station to perform IP layer and user layers above the IP layer. Processing of face data.
- the air interface information processing method further includes: the radio access network controller sending the handover information to the network controller in the core network, so that the network controller re-establishes the enhanced base station
- the data forwarding strategy for the IP layer and the user planes of the IP layer and above is performed for the processing of the user plane data of the IP layer and the IP layer and above, and the re-established IP layer and the user plane of the IP layer and above are layered.
- At least one of the source-enhanced base station and the target enhanced base station (ie, the enhanced base station) after the handover is sent to the one of the base stations, and the subsequent forwarding policy may be accompanied by the forwarding policy.
- the process by which the base station forwards the forwarding policy to another base station The handover information is sent by the radio access network controller after the discovery UE switches from the source enhanced base station to the enhanced base station, where the handover information includes an identifier of the source enhanced base station and an identifier of the enhanced base station.
- the enhanced base station is at least two
- the air interface information processing method further includes: performing joint optimization processing on physical layer functions of the at least two enhanced base stations.
- the radio access network controller before the generating the air interface control policy, includes: the radio access network controller receiving, by using an open interface, an enhanced base station, configured to request the air interface control policy. Air interface policy request. Then, an air interface control policy is generated according to the air interface policy request.
- the air interface policy request is an exception processing request that includes a neighboring cell measurement result of the UE, and correspondingly, the air interface control policy is a joint processing policy or a cell migration policy.
- the air interface policy request is a radio resource allocation request, and correspondingly, the air interface control policy is a radio resource allocation result.
- the radio access network controller is responsible for generating an air interface control policy, and sending the air interface control policy to the enhanced base station, and the enhanced base station is responsible for processing the air interface user plane data according to the air interface control policy, thereby implementing wireless access.
- the separation of the control plane and the user plane of the network is responsible for generating an air interface control policy, and sending the air interface control policy to the enhanced base station, and the enhanced base station is responsible for processing the air interface user plane data according to the air interface control policy, thereby implementing wireless access.
- FIG. 11 is a flowchart of a method for processing air interface information according to another embodiment of the present invention. As shown in FIG. 11, the air interface information processing method in this embodiment includes:
- Step 1101 The enhanced base station receives, by using an open interface, an air interface control policy sent by a radio access network controller with an air interface control function of the radio access network.
- the open interface is an interface between the enhanced base station and the radio access network controller, and is used to enable the enhanced base station to implement the air interface side user plane function of the radio access network under the control of the radio access network controller.
- the enhanced base station of the embodiment opens the air interface control function of the radio access network originally implemented by the enhanced base station to the wireless connection through its open interface with the radio access network control. Network controller.
- the air interface control strategy is generated by the radio access network controller.
- Step 1102 The enhanced base station performs air interface user plane data processing according to the air interface control policy.
- the air interface information processing method in this embodiment further includes: Step 1103: The enhanced base station receives an IP layer sent by a network controller in the core network and a user plane of each layer above the IP layer. Data forwarding strategy.
- Step 1104 The enhanced base station performs processing on the user plane data of the IP layer and the IP layer and above according to the data forwarding policy.
- the air interface information processing method includes, before step 1101, the enhanced base station sends an air interface policy request to the radio access network controller to request the air interface control policy.
- the air interface policy request is an exception processing request that includes the measurement result of the neighboring cell reported by the UE.
- the air interface control policy is a joint processing policy or a cell migration policy.
- the air interface policy request is a radio resource allocation request, and correspondingly, the air interface control policy is a radio resource allocation result.
- the air interface control corresponding to the air interface control policy includes any one or a combination of the following: radio resource allocation, uplink and downlink scheduling, scheduling priority selection, HARQ retransmission, RLC connection control and management, protocol error detection and recovery, and control plane protocol. Encryption and decryption, broadcast, paging, RRC connection Management, radio bearer management, mobility management, key management, UE measurement reporting and control, MBMS control, NAS message direct transmission and QoS management.
- the enhanced base station receives the air interface control policy that is generated and delivered by the radio access network controller, and is responsible for processing the air interface user plane data according to the air interface control policy, thereby implementing the control plane and the user of the radio access network.
- the separation of the faces are the air interface control policy that is generated and delivered by the radio access network controller, and is responsible for processing the air interface user plane data according to the air interface control policy, thereby implementing the control plane and the user of the radio access network.
- the aforementioned program can be stored in a computer readable storage medium.
- the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
Abstract
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RU2615500C2 (ru) | 2017-04-05 |
CN103716881A (zh) | 2014-04-09 |
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BR112015007725A2 (pt) | 2017-07-04 |
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