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Subframe distribution method and apparatus for TDD system

A time-division duplex system and subframe allocation technology, which is applied in the transmission system, radio transmission system, and communication between multiple stations, can solve the problems of large GP overhead, inflexible adjustment, and large granularity of time slot ratio adjustment. , to achieve the effect of reducing the adjustment granularity and enhancing flexibility

Active Publication Date: 2009-05-13
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0008] In the existing LTE TDD system, the subframe allocation scheme with a 5ms half-frame as the subframe allocation period only supports four configuration ratios of uplink time slots and downlink time slots, and the granularity of time slot ratio adjustment is 25%. Large, the adjustment is not flexible enough to meet different service requirements; each half-frame is configured with a pair of switching points, corresponding to a downlink-uplink guard interval GP, because GP is determined by the coverage of the base station, in a large coverage scenario, it will cause GP is expensive

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  • Subframe distribution method and apparatus for TDD system
  • Subframe distribution method and apparatus for TDD system
  • Subframe distribution method and apparatus for TDD system

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Embodiment Construction

[0040] The embodiment of the present invention breaks through the limitation of the frame structure of the existing LTE TDD system with a 5ms half-frame as the subframe allocation period, and proposes a subframe allocation method with at least one 10ms wireless frame as the subframe allocation period to reduce the time slot Scale adjustment granularity enhances the flexibility to meet different business needs.

[0041] In the embodiment of the present invention, firstly, the 10ms radio frame is used as the subframe allocation period, and the configuration ratio of uplink time slots and downlink time slots and the corresponding allocation methods of uplink service subframes and downlink service subframes are introduced in detail. A maximum of two pairs of switching points can be configured in one wireless frame. According to the logarithm of the configured switching points, there are the following allocation methods, which are described in detail below:

[0042] When 2 pairs of...

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Abstract

The invention relates to the technical field of mobile communication, in particular to a subframe distribution technology for a time division duplex system. The invention embodiment discloses a method and a device for subframe distribution for the time division duplex system which reduces the time slot proportion regulation granularity and strengthens the flexibility satisfying different business requirements. The method for the subframe distribution for the time division duplex system comprises: according to proportion of an uplink business volume and a downlink business volume, determining configuration proportion of an uplink time slot and a downlink time slot when at least one wireless frame is taken as a subframe distribution period; according to the configuration proportion of the uplink time slot and the downlink time slot, determining a distribution mode of an uplink business subframe and a downlink business subframe in at least one wireless frame. The device for the subframe distribution for the time division duplex system comprises a configuration proportion determination unit and a first distribution mode determination unit. The invention embodiment also provides a base station and user equipment.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a subframe allocation technology of a time division duplex system. Background technique [0002] The 3rd Generation Mobile Communication (3G) adopts Code Division Multiple Access (CDMA) technology, supports multimedia services, and will have high competitiveness in the next few years. In order to ensure the long-term validity of this competitive ability, the third generation mobile communication standardization organization (3rd Generation Partnership Project, 3GPP) has started the standardization work of the long term evolution (Long Term Evolution, LTE). The LTE system is based on Orthogonal Frequency Division Multiplex (OFDM) technology, the subcarrier spacing is set to 15kHz, and the corresponding OFDM symbol length is 66.67us. The LTE system includes two duplex modes: time division duplex (Time Division Duplex, TDD) and frequency division duplex (Frequency Divi...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B7/208
Inventor 潘学明索士强唐海王映民
Owner DATANG MOBILE COMM EQUIP CO LTD
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