Long term evolution (LTE) dedicated network networking method and system based on wireless backhaul

A wireless and private network technology, applied in the transmission system, wireless communication, electrical components, etc., can solve the problems of high construction cost, non-universal solutions, precious satellite microwave backhaul bandwidth resources, etc., to achieve wide applicability, control group Network construction cost, good scalability

Inactive Publication Date: 2016-11-16
FUJIAN SUNNADA NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Use the existing wired LAN in a specific application of specific LTE private network as the backhaul link between eNB and EPC; however, the solution is not universal, and the specific construction site does not necessarily have a LAN. The traffic load of the wired LAN will cause potential limitations of insufficient bandwidth;
[0006] (2) Using integrated base stations including EPC core network functions combined with air interface gateways for satellite microwave backhaul, but there are limitations in that the construction cost of the solution is too high, and the bandwidth resources of satellite microwave backhaul are very precious and cannot be widely promoted;
[0007] (3) Use integrated base stations including EPC core network functions combined with dedicated backhaul user equipment for LTE wireless backhaul, but there are limitations in that each integrated base station needs to be integrated with core network functions, and the construction cost of the solution is relatively high

Method used

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  • Long term evolution (LTE) dedicated network networking method and system based on wireless backhaul
  • Long term evolution (LTE) dedicated network networking method and system based on wireless backhaul
  • Long term evolution (LTE) dedicated network networking method and system based on wireless backhaul

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Embodiment 1

[0106] Please refer to Figure 1-Figure 5 , this embodiment provides a wireless backhaul-based networking method for an LTE private network. Such as figure 1 As shown, the LTE private network system includes four major parts: the core network EPC, the access network, the terminal UE, and the dispatching control center. Each terminal UE is associated with a base station, and the access network is connected to the server; the core network EPC is directly connected The first-level base station is close to the EPC equipment of the core network, and the second-level base station is connected to the first-level base station through the backhaul user equipment adjacent to it. The user equipment slices the IP address for the secondary base station, and enables the network address translation (NAT) function on the backhaul user equipment to build a connection relationship between the secondary base station and the core network EPC. Logically, relative to a terminal UE device, its IP ...

Embodiment 2

[0118] Please refer to image 3 , on the basis of Embodiment 1, this embodiment further limits the encapsulation method of the S1 interface protocol, and the similarities are not repeated here. The specific encapsulation method is:

[0119] Encapsulate the SCTP transmission protocol and the GTP-U tunnel transmission protocol between the lower-level base station and the core network EPC into the IP service data of the terminal UE in the GTP-U tunnel transmission protocol between the upper-level base station and the core network EPC respectively message location;

[0120] Such as image 3 As shown, the format of the SCTP transmission protocol between the primary base station and the core network EPC is: Ethernet MAC header + IP header + SCTP header + S1-AP signaling plane message element; the format of the GTP-U tunnel transmission protocol is: Ethernet MAC header + IP header + UDP header + GTP-U header and IP service data message of terminal UE;

[0121] The format of the SC...

Embodiment 3

[0123] This embodiment is a further extension on the basis of the above embodiments, and provides a packet processing process of the EPC of the core network in the downlink direction (sent to the base station by the EPC of the core network), and the similarities will not be repeated here. In the LTE private network, the uplink process and the downlink process are performed synchronously, and there is no necessary relationship between the two before.

[0124] The downlink process is a process in which a terminal UE sends a service data acquisition request to the server through the base station associated with it, and the server processes the request, obtains the service data message and forwards it to the base station associated with the target terminal UE through the core network EPC;

[0125] see Figure 6 , the specific process includes the following:

[0126] (1) Core network EPC encapsulation plus header

[0127] The core network EPC receives the service data message sen...

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Abstract

The present invention provides a long term evolution (LTE) dedicated network networking method and system based on wireless backhaul. The method comprises the steps that a base station and an evolved packet core (EPC) establish a connection based on an S1 interface protocol; a stream control transmission protocol (SCTP) and a GTP-U tunnel transmission protocol between a next level of base station and the EPC are encapsulated inside a GTP-U tunnel transmission protocol of the upper level of base station and the EPC; the EPC receives a protocol packet sent by the base station, and then acquires a transmission protocol in the protocol packet; the EPC determines whether the transmission protocol is the encapsulated GTP-U tunnel transmission protocol; and if yes, the transmission protocol is decapsulated and a packet head is removed, and the transmission protocol encapsulated in the innermost layer is acquired. Through adoption of the method, an LTE wireless air interface data transmission capability of the last level of base station is used as a backhaul network of the next level of base station, and networking construction cost is effectively controlled, and further, extensibility of LTE dedicated network construction is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a wireless backhaul-based networking method and system for an LTE private network. Background technique [0002] After several generations of development, mobile communication technology has become the most widely used communication method in people's daily life. The global 4G commercial network represented by LTE network has entered a period of rapid development. With the development of social economy and the advancement of information technology, the demand for information acquisition is growing rapidly, and the needs of enterprise groups in various industries for cluster multimedia services, Internet services, and high-speed data services are increasingly urgent. Among them, high-definition video surveillance and massive IoT data transmission needs are particularly prominent. The shared network and broadband of trunking and broadband access have become the mains...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04L29/06H04W92/10
CPCH04L69/22H04W76/12H04W92/10
Inventor 罗来财
Owner FUJIAN SUNNADA NETWORK TECH CO LTD
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