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Terminal access method for TDD system

A terminal access and terminal technology, which is applied in the field of communication and can solve problems such as inconvenience of terminal access to downlink spectrum.

Active Publication Date: 2008-08-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the actual frequency position and frequency band width of the downlink feedback spectrum shown in Figure 2(a) above vary, and the downlink frequency points used by different operators or networks in different regions will be different, which is bound to be It is inconvenient for terminals to access downlink spectrum

Method used

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  • Terminal access method for TDD system
  • Terminal access method for TDD system
  • Terminal access method for TDD system

Examples

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Embodiment Construction

[0028] According to an embodiment of the present invention, there is provided a terminal access method for a time division duplex (TDD) system (may be referred to as a TDD feedback enhanced system) using two frequency spectrums.

[0029] First, the method provided by the embodiment of the present invention is applicable to a TDD system composed of at least one base station and at least one terminal. In this TDD system, in addition to using a section of bidirectional spectrum to transmit and receive in a time-division manner, the base station can also implement downlink transmission on another section of unidirectional spectrum; and the terminal can use a section of bidirectional spectrum to transmit and receive in a time-division manner It is also possible to receive signals on another unidirectional spectrum, where the terminal transmits and receives on one bidirectional spectrum and receives on another unidirectional spectrum in a time-division manner. In addition, the recep...

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Abstract

The invention provides a terminal access method comprising the following steps: step 1, synchronization is established on a two-way frequency spectrum; step 2, a time division duplex system issues a cell broadcast message at the bidirectional frequency spectrum; step 3, a terminal reads the relevant information of a one-way downlink frequency spectrum from the cell broadcast message, and judges whether a usable one-way downlink frequency spectrum exists according to the relevant information; when the terminal judges that a usable one-way downlink frequency spectrum exists, step 4 is carried out, otherwise step 5 is carried out; step 4, the terminal establishes synchronization at the one-way downlink frequency spectrum and reads the broadcast information of the one-way downlink frequency spectrum; step 5, the terminal resides in the two-way frequency spectrum. With the technical proposal, the terminal access method ensures that a TDD system adopting two types of frequency spectrums not only supports the prior access method of the prior TDD terminal for a two-way frequency spectrum, but also supports the fast access of a future terminal adopting two frequency spectrums for a downlink frequency spectrum, thereby realizing the smooth development of the TDD system.

Description

technical field [0001] The present invention relates to the communication field, and more particularly, relates to a terminal access method, which is especially suitable for a TDD (Time Division Duplex, Time Division Duplex) system using two frequency spectrums. Background technique [0002] With the emergence of systems that introduce spectrum dedicated to broadcasting in mobile communication systems (for example, Media FLO launched by Qualcomm), and the emergence of multi-mode terminals (for example, GSM / TD-SCDMA terminals), mobile communication networks and mobile The use of spectrum by terminals is developing towards diversification and integration. In the case that the frequency spectrum used by the mobile communication system is becoming more and more diverse, it is necessary to solve the problem of compatibility of the follow-up system with the existing system technically. [0003] The existing TDD system (TDD basic system) uses unpaired two-way spectrum 101 for upli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B7/26
Inventor 刁心玺
Owner ZTE CORP
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