Integrated wireless access network structure and its method

Abstract

The invention relates to a wireless integrated access network which can provides wireless digital broadcast, mobile communication and mobile station position service. Said wireless integrated access network comprises: an IP edge network and a wireless IP access network. Wherein, said wireless IP access network comprises several main base station in wide area cover layer and several auxiliary base station, several mobile stations, several mobile gateways / routers and several digital broadcast receivers covered by said main base station. The IP edge network is formed by a function unit for realizing service coordination and network manage control and a IP network unit. The invention also provides a method for inserting a position time slot in said mobile communication system of wireless integrated access network and a frequency division multiplexing method.

Description

【Technical field】 [0001] The present invention relates to the field of wireless communication, in particular to a wireless integrated access network capable of comprehensively providing wireless digital broadcasting, mobile communication, and mobile station positioning services, and inserting a positioning time slot into a mobile communication system under the wireless integrated access network method and spectrum multiplexing method. 【Background technique】 [0002] The integration of wireless digital broadcasting services, wireless communication services, mobile Internet services, and mobile station positioning services can provide services more flexibly and use spectrum more efficiently. This demand for service convergence has led to extensive research on network structure and related technologies, such as layered network structure, spectrum reuse technology, spectrum dynamic allocation technology, network synchronization technology, and high-efficiency air interface techn...

AI Technical Summary

Problems solved by technology

[0018] (2) Some network resources need to be copied;

[0020] (4) Not efficient, but maintains independence and flexibility

[0023] (2) Provide efficient resource utilization, but lose some flexibility;

[0036] The main disadvantage of the existing network structure integration technology is that it only focuses on the discussion of the core network structure suitable for service integration, and does not comprehensively consider the problems involved in wireless access network integration.

For example, there is no discussion on the changes in the wireless network access structure caused by service convergence, and the spectrum convergence problems caused by service convergence are not discussed.

[0037] Shortcomings of the existing layered digital broadcasting network structure: the layered network structure that comprehensively realizes the combination of wireless digital broadcasting and content on demand provided by the U.S. Patent Application Publication No. 20010022781 is only a kind of Solve the problem of service on demand in the broadcasting network, but cannot solve the problems faced by the integration of mobile communication and digital broadcasting

For example, 1) the invention only discusses the transmitter, which cannot realize the two-way link required by mobile communication; 2) the fusion of communication and broadcast needs to realize the continuous coverage of the area by the wireless access point. 3) The integration of communication and broadcasting needs more strict synchronization of the uplink and downlink on the air interface between each access point (or base station), which cannot be realized by this invention; 4) The integration of communication and broadcasting Convergence requires the use of more spectrally efficient technologies for the air interface. Only in this way can the capacity for mobile communications be discovered without reducing (or increasing) the capacity for broadcasting services in the existing broadcasting spectrum

[0038] The disadvantage of the existing spectrum fusion technology is that it only focuses on discussing the technical issues involved in the frequency division fusion of spectrum, such as the coexistence of UMST and DVB-T when digital broadcasting and wireless communication use different frequency bands, and UMTS’s DVB-T frequency space multiplexing problem, while there is a lack of discussion on the more flexible and potentially more spectrally efficient time-division-spectrum fusion problem

A major disadvantage of frequency division fusion is the need for additional guard band overhead, resulting in a waste of spectrum

Although the DVB and cellular spectrum reuse method proposed by ERISSON can further improve the frequency reuse effect, the reuse coefficient of the method is still low, only (1 / 7)×2, and the network planning is complicated

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