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Method and device for information sending

A technology for information transmission and equipment, which is applied in the field of data transmission and can solve problems such as high development costs

Active Publication Date: 2014-01-15
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since bits 0-23 of HT-SIG1 and bits 0-9 of HT-SIG2 have defined the corresponding state information, if a new data bit is added, the existing chips and protocols need to be greatly modified. cost too much

Method used

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  • Method and device for information sending

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 2 The implementation flow of the information sending method of the present invention is shown, and the details are as follows:

[0037] In step S201, the sequence corresponding to the original information to be sent is selected according to the mapping table of information and sequence.

[0038] Specifically, firstly, the length of the sequence is determined according to the amount of information to be carried. Theoretically, the number of information that can be carried by a sequence of length a is 2 to the power of a, but considering the requirement of the generator polynomial for the accuracy of the verification result, if an error occurs in different bits, the remainder should be different, Excluding some sequences that affect the accuracy of the verification results, the obtained sequences are matched one by one with the number of information that needs to be carried, as shown in the following table:

[0039] sequence 1

message 1

........

Embodiment 2

[0056] Figure 4 The implementation flow of the information sending method of the present invention is shown, and the details are as follows:

[0057] In step S401, a mapping table of information and sequences consistent with the receiver is established.

[0058] Wherein, the information is generally control information, and of course it can also be other information, etc., which can be flexibly defined in the mapping table according to the needs of users.

[0059] Here, establishing a mapping table of information and sequences that is consistent with the receiver needs to be consistent before the two parties in the data exchange perform a cyclic redundancy check. This step is the same as that described in step S501. The information is consistent with the representation of the mapping table of the sequence. Users can maintain the consistency of the content of the mapping table between the receiving and sending parties by synchronously updating or importing the mapping table ...

Embodiment 3

[0087] Figure 6 It shows a block diagram of sending and receiving equipment of information in the present invention, and the sending equipment may be an access point AP or STA station in a wireless local area network, and the details are as follows:

[0088] The sending device 61 includes a first establishment mapping unit 610, a selection unit 611, an encoding unit 612, and a sending unit 613; the receiving device 62 includes a second establishment mapping unit 620, a receiving unit 621, a decoding unit 622, and an acquisition unit 623, wherein the The encoding unit 612 includes a first shift unit 6121 and a first division unit 6122, and the decoding unit 622 includes a first addition unit 6221 and a third division unit 6222, and the highest power of the polynomial corresponding to the selected sequence is r, and r is greater than or is equal to 1.

[0089] The first mapping establishment unit 610 and the second mapping establishment unit 620 are used to establish a mapping...

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PUM

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Abstract

The invention belongs to the field of communication and provides a method and device for information sending. The method comprises the steps that according to a mapping table of information and sequences, a sequence corresponding to original information to be sent is selected; according to the sequence, cyclic redundancy check is carried out on the original information to obtain a cyclic redundancy check code; the original information and the cyclic redundancy check code are sent. By means of the method and device, data bits of the original information do not need to be added, and data are effectively transmitted. Compared with the prior art that data bits of original information are added, an existing chip and protocol do not need to be modified, and development cost is saved.

Description

technical field [0001] The invention belongs to the field of data transmission, in particular to an information sending method and equipment. Background technique [0002] CRC (Cyclical Redundancy Check) is a verification algorithm that uses the principle of division and remainder to control the accuracy of data transmission. It is widely used in communication systems because of its simple coding and low error rate. [0003] The basic principle of the cyclic redundancy check is: the sender and the receiver use the same fixed generator polynomial G(X), and the highest power of G(X) is r. [0004] 1. On the sender side, the polynomial of the original information to be sent is expressed as C(X), shifting C(X) to the left by r bits is expressed as rC(X), and rC(X) is divided by the generator polynomial G(X) to obtain r bit check code polynomial R(X), then get the coded polynomial T(X) with cyclic redundancy check code T(X)=rC(X)+R(X), and send the T(X). [0005] 2. On the rece...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0061H03M13/09H04L1/0041
Inventor 罗毅董明杰李云波
Owner HONOR DEVICE CO LTD
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