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Broadcast information transmission method and apparatus

A transmission method and technology for broadcasting information, applied in the field of transmission methods and devices for broadcasting information, can solve the problem of high terminal processing complexity, and achieve the effects of reducing complexity and processing delay

Inactive Publication Date: 2009-05-06
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0022] It can be seen from the above that the position of P-BCH in time is divided into two parts, and the position allocation of the two parts needs to change according to the configuration of the CP. At the same time, because the P-BCH is distributed on both sides of the master-slave synchronization signal, and These two parts are respectively located in two different time slots, so the terminal needs to judge the type of CP configuration used by the system first, and then detect and process the P-BCH at two different times through the relationship between the P-BCH and the synchronization channel signal. BCH signal makes terminal processing more complicated

Method used

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  • Broadcast information transmission method and apparatus
  • Broadcast information transmission method and apparatus

Examples

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Embodiment 1

[0060] A TDD OFDM system, its frame structure is as follows Figure 6 As shown, each 10ms radio frame is composed of two 5ms half-frames, and each half-frame is composed of eight 0.5ms service time slots and 1ms special time slot areas.

[0061] Two consecutive service time slots are paired to form a subframe, and the subframe length is 1ms; the special time slot area includes DwPTS, GP and UpPTS3 special time slots, among which, the length of the three special time slots can be flexibly configured by high-level signaling , but the total length of the special time slot area formed by the three remains unchanged at 1 ms. At this time, each half frame includes 4 subframes, and each service time slot is configured according to the parameters shown in Table 1, which are the same as the parameter configuration of Type 1 currently used in the FDD system.

[0062]

[0063] Table 1

[0064] After setting the above frame structure, it is necessary to further set the time-frequency...

Embodiment 2

[0075] For the frame structure described in Type 1, the transmission method of broadcast information in the embodiment of the present invention can also be applied. FIG. 8(b) shows the time-frequency domain positions used by the P-BCH in the case of a long CP.

[0076] It can be seen from FIG. 8 that for the frame structure described in Type 1, the SCH and P-BCH can also be configured and transmitted at positions corresponding to those described in Embodiment 1, so details will not be repeated here.

[0077] It can be seen from the above that the embodiment of the present invention reduces the complexity and delay of terminal processing by fixing the position of the P-BCH signal in the downlink time slot of the radio frame, and at the same time configuring the P-BCH to be sent on consecutive OFDM symbol bits. Time.

[0078] Furthermore, by using S-SCH and / or P-SCH and / or downlink common reference signal as a pilot signal, the terminal can also search for P -BCH signal and pe...

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Abstract

The invention discloses a transmission method of broadcasting information. The method comprises: network side configures synchronous channel and main broadcasting channel; configuration style of the synchronous channel and main broadcasting channel are as follows: configuring the main broadcasting channel on continuous multiple continuous OFDM sign position in same downlink time slot, configuring the synchronous channel at OFDM sign position adjacent to main broadcasting channel, thereby reducing complexity and time delay of terminal processing; terminal receives the synchronous channel and receives main broadcasting channel at OFDM sign position adjacent to synchronous channel. The invention also discloses a transmission device of broadcasting information.

Description

technical field [0001] The present invention relates to mobile communication, in particular to a broadcast information transmission method and device. Background technique [0002] Currently, the Third Generation Mobile Communication System Standardization Organization (3GPP) has initiated a research project on the Long Term Evolution (LTE) of the 3G radio interface technology. According to the research progress, the LTE system determines to support two wireless frame structures: [0003] A, the first type of wireless frame (hereinafter referred to as Type1), is suitable for frequency division duplex (Frequency Division Duplex, FDD) system and time division duplex (Time Division Duplex, TDD) system, its structure is as follows figure 1 shown, where: [0004] The frame length of Type1 is 10ms, consisting of 20 time slots, and the length of each time slot is 0.5ms. figure 1 Marked as #0~#19. Every two consecutive time slots is defined as a subframe, and there are 10 subfra...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04H60/91H04B7/26
Inventor 潘学明孙韶辉索士强缪德山王可
Owner CHINA ACAD OF TELECOMM TECH
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