A system and method for cooperative dual duplex

Abstract

The invention discloses a system which can realize cooperated duplex, and it includes the base station that use the FDD ascending spectrum, the FDD descending spectrum and the non-duplex spectrum and several terminals, said base station includes: several launching channels those include the first launching channel using the non-duplex spectrum, the second launching channel using the FDD ascending spectrum and the third launching channel using the FDD descending spectrum; and several receiving channels those include the first receiving channel using the non-duplex spectrum, the second receiving channel using the FDD ascending spectrum; said terminals include: launching channel which can use the FDD ascending spectrum and the non-duplex spectrum; and several receiving channels those can use the first receiving channel which can use the FDD ascending spectrum and the non-duplex spectrum and the second receiving channel which can use the FDD descending spectrum. Using the system of invention, it can solve the intercommunication problems between the non-duplex spectrum systems and the FDD spectrum system, and reduce the complex cost of system greatly.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and a system for comprehensively using paired and non-paired frequency spectrums. Background technique [0002] Duplexing is a fundamental consideration in wireless communication systems. Many performances of the system, such as: the flexibility of spectrum use, the complexity of terminals and base stations, the ability to use channel information, networking capabilities, inter-network intercommunication capabilities, and the ability to support terminal mobile speeds are all related to the dual working methods are closely related. [0003] There are three main duplex modes used in existing communication systems: 1) Pure TDD (Time Division Duplex) mode, such as PHS system; 2) Pure FDD (Frequency Division Duplex) mode, such as WCDMA (Wideband Code Division Multiple Access) system ; 3) Half-duplex FDD mode, such as GSM (Global System for Mobile Communications, Global...

AI Technical Summary

Problems solved by technology

[0004] The main advantages of the pure TDD method are: 1) No need for paired spectrum, which is convenient for frequency planning; 2) The receiver and transmitter channel design is simple; 3) It is easy to use the channel reciprocity feature, which makes the design of smart antenna simple; and its main Disadvantages are: 1) Spectrum utilization efficiency is lower than FDD method when the coverage area is too large; 2) Supporting high-speed mobile is not as good as FDD method

[0005] The main advantages of the pure FDD method are: 1) suitable for supporting high-speed mobile; 2) suitable for large coverage areas; and its main disadvantages are: 1) requires paired spectrum, which brings difficulties in spectrum planning; 2) channel reciprocity Difficulties in the use of features make the design of smart antennas more difficult; 3) The use of uplink and downlink spectrum is not flexible enough to support asymmetric services

However, this patent has the following disadvantages: 1) only a pair of FDD spectrum is considered in the structure of the base station and the terminal, and a more comprehensive spectrum usage is not considered, such as the case of FDD spectrum plus a section of TDD spectrum; 2) the transmission channel of the terminal There are two, but there is only one receiving channel, which is not conducive to the terminal supporting high-speed download services and wireless environment measurement

However, this patent only describes the structural relationship between the filter and the switch in the transceiver that can support TDD and FDD hybrid duplex. Although its structure can flexibly support TDD and FDD duplex, it is not consistent with the goal of the present invention. Not consistent, for example, this structure cannot use a pair of FDD spectrum and a TDD spectrum at the same time

[0012] In short, existing technologies cannot achieve the following at the same time: comprehensive use of paired and unpaired spectrum, improvement of spectrum utilization efficiency, enhancement of service provision capabilities, and reduction of the overall cost of base stations and terminals

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