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Transmission method and apparatus for control and management data

A technology of control management and transmission method, applied in the field of control and management data transmission, can solve problems such as reducing the transmission capacity of IQ data, and achieve the effect of improving transmission efficiency

Active Publication Date: 2009-05-06
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is not limited to the characteristics of Multimedia Broadcast / Multicast Service (MBMS), because the output of CM data needs to occupy the data transmission bits in each chip of the normal service time slot, it will reduce the number of IQ data per unit time. transmission capacity

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  • Transmission method and apparatus for control and management data
  • Transmission method and apparatus for control and management data
  • Transmission method and apparatus for control and management data

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Embodiment Construction

[0028] The basic idea of ​​the present invention is: use the remaining space after transmitting IQ data in the time slot chip to transmit CM data. Here, the time slots are UpPTS and TS1 time slots, and / or TS0 and DwPTS time slots.

[0029] Considering that when supporting MBMS features, downlink data must be sent in full time slots, and it is impossible to allocate separate time slots for CM data, so a composite framing scheme of IQ data and CM data in service time slots must be adopted. Wherein, the service time slot refers to a regular time slot in each subframe.

[0030] Usually, on the link of the remote protocol, the basic unit of data transmission is the chip in the TD-SCDMA system frame, and the frequency of each chip is 1.28MHz. Taking typical remote protocol rates of 614.4Mbps, 1.2288Gbps and 2.4576Gbps as examples, the transmission capacity of each chip is 384bits, 768bits and 1536bits respectively.

[0031] Figure 3a~3c is the data capacity that each chip can ca...

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Abstract

The invention discloses a method and a device for the transmission of control management (CM) data. The residual space in a time slot chip after the normal transmission of in-phase quadrature (IQ) data is used for CM data transmission, and particularly the residual amount of an uplink pilot frequency time slot (UpPTS) and a TS1 time slot and / or the residual amount of a TS0 and a downlink pilot frequency time slot (DwPTS) are used for the CM data transmission. The method and the device for the transmission of control management (CM) data can guarantee the normal IQ data transmission, support the MBMS property and provide a transmission channel with wider band width for the CM data.

Description

technical field [0001] The invention relates to the transmission technology of control management (CM) data, in particular to the transmission method and device of CM data in the remote protocol of Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] TD-SCDMA is one of the three international standards for 3G mobile communication systems that adopts time division duplex (TDD) mode. TD-SCDMA supports uplink and downlink asymmetric service transmission and has greater flexibility in spectrum utilization. The system comprehensively adopts advanced technologies in wireless communication such as smart antenna, uplink synchronization, joint detection and software radio, so that the system has high performance and spectrum utilization. [0003] A time division multiple access (TDMA) frame length of a TD-SCDMA system frame is 10ms, including two 5ms subframes, and the structures of the two subframes are exactly the same. Such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B1/707H04L1/00
Inventor 刘晓琳罗斌吴永海
Owner DATANG MOBILE COMM EQUIP CO LTD