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Method and device for receiving system messages as well as system message sending device

A technology of system message and receiving method, applied in the field of system message sending device

Active Publication Date: 2012-07-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scheduled SI-7 conflicts with the transmission of SIB1 because it is sent on the #5 subframe of the #0 radio frame

Method used

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  • Method and device for receiving system messages as well as system message sending device
  • Method and device for receiving system messages as well as system message sending device
  • Method and device for receiving system messages as well as system message sending device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] According to the embodiment of the present invention, the radio frame and subframe at which the SI transmission window starts can be expressed by the following formula:

[0043] Send the wireless frame at the beginning of the window: SFN%N=1+floor(w*(n-1) / 10);

[0044] The wireless subframe at the beginning of the sending window: subframe=(w*(n-1))%10;

[0045] The radio frame and subframe where SI-2 is located meet: SFN%16=1, subframe=0, that is, in the #0 subframe of the odd frame;

[0046] The radio frame and subframe where SI-3 is located meet: SFN%32=1, subframe=1, that is, #1 subframe in an odd frame;

[0047] The radio frame and subframe where SI-4 is located meet: SFN%64=1, subframe=2, that is, #2 subframe in the odd frame;

[0048] The radio frame and subframe where SI-5 is located satisfy: SFN%64=1, subframe=3, that is, #3 subframe in odd frames;

[0049] The radio frame and subframe where SI-6 is located meet: SFN%128=1, subframe=4, that is, #4 subframe in...

Embodiment 2

[0054] According to the embodiment of the present invention, the radio frame and subframe at which the SI transmission window starts can be expressed by the following formula:

[0055] Send the wireless frame at the beginning of the window: SFN%N=9+floor(w*(n-1) / 10);

[0056] The wireless subframe at the beginning of the sending window: subframe=(w*(n-1))%10

[0057] The radio frame and subframe where SI-2 is located meet: SFN%16=9, subframe=0, that is, in the #0 subframe of the odd frame;

[0058] The radio frame and subframe where SI-3 is located meet: SFN%32=9, subframe=1, that is, #1 subframe in an odd frame;

[0059] The radio frame and subframe where SI-4 is located meet: SFN%64=9, subframe=2, that is, #2 subframe in odd frames;

[0060] The wireless frame and subframe where SI-5 is located meet: SFN%64=9, subframe=3, that is, #3 subframe in the odd frame;

[0061] The wireless frame and subframe where SI-6 is located meet: SFN%128=9, subframe=4, that is, #4 subframe ...

Embodiment 3

[0066] In this embodiment, it is assumed that the periods of SI2-SI8 are 80ms, 160ms, 320ms, 640ms, 640ms, 1280ms and 1280ms, respectively.

[0067] According to the embodiment of the present invention, the radio frame and subframe at which the SI transmission window starts can be expressed by the following formula:

[0068] Send the wireless frame at the beginning of the window: SFN%N=9+floor(w*(n-1) / 10);

[0069] The wireless subframe at the beginning of the sending window: subframe=(w*(n-1))%10;

[0070] As mentioned above, when N=8, the condition satisfied by the radio frame is modified to: SFN%N=1+floor(w*(n-1) / 10).

[0071] The radio frame and subframe where SI-2 is located satisfy: SFN%8=1, subframe=0, that is, in the #0 subframe of the odd frame;

[0072] The radio frame and subframe where SI-3 is located meet: SFN%16=9, subframe=1, that is, #1 subframe in an odd frame;

[0073] The radio frame and subframe where SI-4 is located satisfy: SFN%32=9, subframe=2, that i...

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PUM

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Abstract

The invention discloses a method and a device for receiving system messages as well as a system message sending device, wherein the method for receiving the system messages comprises the following steps: confirming a beginning radio frame of a system message window according to the follow ways: SFN percent N is equal to frame_offset plus floor (w*(n-l) / 10), wherein the frame_offset is frame offset and is an odd number, w is the size of the window, N is a dispatching cycle of the system messages, n is a dispatching sequence of the system messages, and the SFN is a system frame number of the radio frame; confirming a beginning radio subframe of the system message window according to the following ways: subframe is equal to (w*(n-1)) percent 10, wherein the subframe is a sequence number of the radio subframe. By means of the technical scheme, the situation of the sending conflict between SI and SIBI can be avoided by setting the beginning radio frame of the system message sending window to have the offset.

Description

technical field [0001] The present invention relates to the communication field, in particular to a system message receiving method and device and a system message sending device. Background technique [0002] In a Long-Term Evolution (LTE for short) system, system messages can be divided into a main system message (MIB), a system message block 1 (SIB1) and general system messages (SI). [0003] Wherein, the MIB is sent on a broadcast channel with a fixed sending cycle of 40 milliseconds, and the MIB is repeatedly sent in the #0 subframe of each radio frame within the sending cycle. System Information Block 1 (SIB1) is sent on the downlink shared channel with a fixed scheduling period of 80 milliseconds. SIB1 satisfies the #5 subframe of the wireless frame with SFN%2=0 within the scheduling period (the subframe number starts from 0) to resend. Other system parameters are included in other system information blocks (SIBs). For other SIBs, there are already SIB2 to SIB8 in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/58
Inventor 杜忠达和峰
Owner ZTE CORP