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Wireless communication system and method for sending uplink synchronization channel

A wireless communication system and synchronization channel technology, applied in wireless communication, multi-frequency code system, communication between multiple stations, etc., can solve the problem that the wireless uplink synchronization channel cannot meet the requirements of uplink channel coverage and full utilization of resources, etc. problem, to achieve the effect of improving system throughput, reducing collision probability, and increasing the number of multiplexing users

Inactive Publication Date: 2012-08-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a wireless communication system and its uplink synchronization channel transmission method, as well as the corresponding wireless frame structure and the preamble structure in the wireless subframe, so as to solve the problem that the existing wireless uplink synchronization channel cannot reach the uplink channel. Issues with sending coverage requirements and resource utilization requirements

Method used

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  • Wireless communication system and method for sending uplink synchronization channel
  • Wireless communication system and method for sending uplink synchronization channel
  • Wireless communication system and method for sending uplink synchronization channel

Examples

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Embodiment 1

[0061] Such as Figure 5 As shown, in the frequency domain, the uplink synchronization channel occupies 6 RBs; in the time domain, the preamble of the uplink synchronization channel consists of two parts, the CP and the sequence, where the duration of the sequence is 4096 (Ts). The duration of CP is 216Ts. One subframe in a cell supports one uplink synchronization channel in the time domain, and the preamble of the uplink synchronization channel is sent at the starting position of the 0th symbol of the normal uplink subframe

[0062] Note: The numbers of SC-FDMA symbols in common uplink subframes are 0, 1, 2, ..., 13

Embodiment 2

[0064] Such as Image 6 As shown, in the frequency domain, the uplink synchronization channel occupies 6 RBs; in the time domain, the preamble of the uplink synchronization channel is composed of CP and sequence, wherein: the duration of the sequence is 4096 (Ts), and the duration of the CP is ( 432-x) / 2=201(Ts), where x=30Ts. One subframe in a cell supports one uplink synchronization channel in the time domain, and the preamble of the uplink synchronization channel is sent at the starting position of the 11th symbol of a normal uplink subframe.

[0065] Note: The numbers of SC-FDMA symbols in common uplink subframes are 0, 1, 2, ..., 13

Embodiment 3

[0067] Such as Figure 7 As shown, in the frequency domain, the uplink synchronization channel occupies 6 RBs; in the time domain, the preamble of the uplink synchronization channel is composed of CP and sequence, where: the duration of the sequence is 4096 (Ts), and the duration of the CP is 216Ts . One subframe in a cell supports seven uplink synchronization channels in the time domain, and their preambles are sent at the starting positions of symbols 0, 2, 4, 6, 8, 10, and 12 of a common uplink subframe. Note: The numbers of SC-FDMA symbols in common uplink subframes are 0, 1, 2, ..., 13

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Abstract

The invention discloses a wireless communication system and a method for sending an uplink synchronization channel as well as a corresponding wireless frame structure and a preamble structure in a wireless subframe. The wireless communication system comprises a sending party and a receiving party; and the sending party sends preambles to the receiving party by an uplink synchronization channel, wherein the preambles are sent at six resource blocks of frequency domains of one or more subframes of a wireless frame that the uplink synchronization channel is located at. And each of the preambles includes a cyclic prefix and a sequence according to a timing sequence, wherein the sequence's duration is 4096Ts or 2048Ts. Variation of the duration of the sequence can correspond different duration of the cyclic prefix. According to the invention, a coverage requirement of a wireless local area network can be met; wireless resources can be fully utilized; the number of multiplexing subscribers can be improved; collision probability of uplink random access is reduced; and the system throughput is improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a wireless communication system and a method for sending an uplink synchronous channel, as well as a corresponding wireless frame structure and a preamble structure in a wireless subframe. Background technique [0002] The Long Term Evolution (LTE) system has two types of frame structures, corresponding to frequency division duplex mode and code division duplex mode respectively. [0003] Such as figure 1 As shown, the frame structure (also known as the first type of frame structure, ie frame structure type 1) of the frequency division duplex FDD (Frequency Division Duplex) mode of the LTE system is given. exist figure 1 , a 10ms radio frame is divided into 20 time slots of 0.5ms, and two adjacent time slots form a subframe with a length of 1ms, that is, subframe i is composed of time slots 2i and 2i+1, where i= 0, 1, ..., 9. In the FDD mode, all 10 subframes are used for ...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04L27/26
CPCH04W74/0833H04W84/12
Inventor 郝鹏梁春丽吴欣戴博夏树强郁光辉许进段灿
Owner ZTE CORP
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