Content based access network combining scheme under heterogeneous wireless surroundings

Abstract

The invention provides a directory-based access network fusion method for heterogeneous wireless environment, wherein the hardware platform comprises a terminal unit (1), a signaling base station (2), N service base stations (3), a core network, Un signaling channels between the terminal unit (1) and the signaling base station (2), Uu service channels between the terminal unit (1) and each service base station (3), Iu signaling channels between the signaling base station (2) and the core network, and Iu service channels between each service base station (3) and the core network. The method comprises the following key steps: directory indexing step, terminal start-up step, service establishment step, directory update step, and mode switching step. The invention incorporates the common access of control signaling, various modes of service communication and directory-based access management strategy, facilitates the selection and switch of communication modes, improves the management logic, coverage flexibility, switch flexibility and access controllability, and provides the extensive support. The invention is a high-efficiency proposal to access network of heterogeneous wireless network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to the technical field of fusion of access networks in heterogeneous wireless communication environments. Background technique [0002] Due to the diversification of user business needs and the long-term existence of existing network facilities within a certain range, the future mobile communication access network will be a multiple heterogeneous environment where multiple wireless access networks coexist. These may include: 2G network with wide area coverage at present, 3G network gradually commercialized, next-generation communication network represented by multi-antenna technology, and broadband wireless network represented by IEEE802.x series, etc. How to realize the convergence of multiple wireless access networks in a heterogeneous environment and the cooperative work among multiple wireless access technologies are the main contents of future mobile communicatio...

AI Technical Summary

Problems solved by technology

[0008] (1) E2R needs the support of reconfigurable network elements, and the existing network facilities do not support the reconfiguration function, so it is difficult for E2R to reuse the existing network facilities, and rebuilding the reconfigurable network facilities supporting E2R requires more cost;

[0009] (2) In order to realize the manageability, controllability, and configurability of reconfiguration capabilities, E2R needs to define a complete management framework, a complete interaction process and interface, and a joint radio resource management and spectrum management mechanism. The research and development of these technologies Standardization will go through a long process;

[0010] (3) E2R requires real-time download of available mode-related software during vertical switching, which not only increases the switching delay and makes the switching response time longer, but also occupies the system transmission bandwidth and reduces the utilization rate of the wireless spectrum;

[0011] (4) The MARAI system provides a general access scheme for the existing heterogeneous network, but there is no research on the specific access strategy and the multiplexing strategy of multiple communication modes;

[0012] (5) The MIRAI access network integration solution cannot fundamentally solve the problem of massive data loss during the vertical handover process

The vertical handover of the mobile terminal during the session due to reasons such as movement or wireless link quality, the disconnection of the data link before and after the handover, and the process of re-establishing the link lead to the loss of all link buffer data in the old access network;

[0013] (6) The access network integration solution of the MARAI system cannot provide flexible coverage of the access network, cannot perform fast vertical switching, and does not provide enough support for access controllability and system scalability, and also for location management. , mobility management, radio resource management and other aspects still face huge challenges

[0014] In the papers, patents and related publications that have been reported so far, there has not been any possible solution that can not only reuse existing network facilities and access technologies, but also support flexible coverage, sensitive switching, and controllable access. Expandable Access Network Convergence Solution

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