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Data transmission method for mixed time division duplex large band width system

A transmission method and system data technology, which is applied in the field of hybrid time-division duplex large-bandwidth system data transmission, can solve problems such as large differences in spectrum characteristics, high power consumption, and growth of downlink traffic, and achieve large frequency selective gain and high scheduling Flexibility and the effect of improving throughput

Inactive Publication Date: 2009-04-08
ZTE CORP
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Problems solved by technology

[0018] Considering the compatibility with LTE Release-8, each component carrier of LTE-Advanced needs to be able to access LTE users; in addition, due to the limitation of hardware devices, uplink transmission of signals exceeding 40MHz bandwidth will consume a lot of power at present and in the next few years , which is not conducive to terminal power saving; at the same time, the downlink business traffic in the wireless network will increase significantly, resulting in asymmetric terminal uplink and downlink business; and for multiple component carrier aggregation of non-continuous spectrum, the spectrum characteristics of each component carrier may be very different

Method used

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  • Data transmission method for mixed time division duplex large band width system
  • Data transmission method for mixed time division duplex large band width system
  • Data transmission method for mixed time division duplex large band width system

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Embodiment 1

[0043] In order to be compatible with LTE terminals, the frame structure of the wireless frame of the hybrid time division duplex large bandwidth system of the present invention can follow the design of LTE, and the uplink and downlink ratio configuration is backward compatible with the uplink and downlink ratio configuration in LTE, but is not limited to the uplink and downlink ratio configuration in the LTE system. Line scale configuration. The specific frame structure is shown in Figure 1, and the uplink and downlink ratio configuration is shown in Table 1.

[0044] image 3 A schematic diagram of a hybrid time-division duplex large-bandwidth system adopting the present invention is given, wherein each component carrier is configured with different uplink and downlink ratios, and the system aggregates three discrete component carriers on the frequency band (but the present invention does not It is limited to discrete component carriers on the aggregated frequency band, and...

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Abstract

The invention provides a data transmission method for a hybrid time division duplex large-bandwidth system. The spectrum resource of the time division duplex bandwidth system is formed by aggregating a plurality of component carriers, uplink / downlink time division of each component carrier multiplexes a same frequency resource; the system and a terminal transmit data on the component carriers; radio frames of a plurality of component carriers have the same length, and sub-frames contained by each radio frame have the same length. The data transmission method for the hybrid time division duplex large-bandwidth system can be backwards compatible and support asymmetrical service.

Description

technical field [0001] The invention relates to the communication field, in particular to a data transmission method for a hybrid time-division duplex large-bandwidth system. Background technique [0002] FIG. 1 shows a frame structure of a TDD (Time Division Duplex, time division duplex) mode of an LTE (Long Term Evolution, long term evolution) system. In the frame structure of the TDD mode, a 10ms radioframe (wireless frame) is composed of two half frames (half frames) with a length of 5ms, and a half frame includes five subframes (subframes) with a length of 1ms. Subframe i is defined as two time slots 2i and 2i+1 with a length of 0.5 ms. For Normal CP (Normal Cyclic Prefix, standard cyclic prefix), a slot contains 7 symbols with a length of 66.7us, of which the CP length of the first symbol is 5.21us, and the CP (cyclic prefix) length of the remaining 6 symbols is 4.69us; for Extended (Extended, extended) CP, a time slot contains 6 symbols, and the CP length of all sym...

Claims

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Application Information

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IPC IPC(8): H04B7/26
Inventor 喻斌张禹强郝鹏胡剑马志锋
Owner ZTE CORP
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