WO2012079358A1 - Data processing method, apparatus and system - Google Patents

Data processing method, apparatus and system Download PDF

Info

Publication number
WO2012079358A1
WO2012079358A1 PCT/CN2011/076327 CN2011076327W WO2012079358A1 WO 2012079358 A1 WO2012079358 A1 WO 2012079358A1 CN 2011076327 W CN2011076327 W CN 2011076327W WO 2012079358 A1 WO2012079358 A1 WO 2012079358A1
Authority
WO
WIPO (PCT)
Prior art keywords
scrambling
seed
bits
data
sequence
Prior art date
Application number
PCT/CN2011/076327
Other languages
French (fr)
Chinese (zh)
Inventor
段灿
许进
徐俊
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201010594723.0A priority Critical patent/CN102546079B/en
Priority to CN201010594723.0 priority
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012079358A1 publication Critical patent/WO2012079358A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/06Cryptographic mechanisms or cryptographic arrangements for secret or secure communication the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/34Encoding or coding, e.g. Huffman coding or error correction

Abstract

The present invention discloses a data processing method, apparatus and system. The method includes: scrambling a data sequence by using a scrambling seed, wherein the data sequence carries a check bit which is used to check the scrambling seed (S102); and transmitting the scrambled data sequence (S104). The present invention can ensure the validity of scrambling seeds, thus avoiding mistakenly descrambling data.

Description

Data processing method and apparatus TECHNICAL FIELD The present invention relates to communication field, specifically, it relates to a data processing method, device and system. BACKGROUND i wireless local or network (Wireless Local Area Networks, referred to as WLAN) is a wireless communication technology computer equipment interconnected to form can communicate with each other and share resources of the network system. Advantage of WLAN communication cable is no longer used to connect the computer to the network, but are connected by a wireless manner, so that the building and the mobile terminal network more flexible. IEEE802. Il is one of the mainstream wireless LAN technology, this protocol is a predetermined physical layer (PHY) and media access control (MAC) layer specifications. With the development of mobile communication technology and the demand for wireless networks, the physical layer specification direction toward increasingly high rate of continuous development, 802.11b and then subjected to the 802.11 802. Ha / g, then 802.11η, Finally, the development of the 802. llac. Channel encoding process is as follows: the data information via a random code sequence coded after scrambling, spatial split, modulation, mapping, modulation, OFDM modulation operation for the OFDM symbols transmitted thereby. I.e. scrambling seed scrambling code generator initial state, the transmitting side scrambling code by a scrambling sequence to obtain seed scrambling code generator, and then the particular data information plus 4. Scrambling sequence obtained at the receiving end and the transmitting end by the same code seed and 4, especially particular code generator 4, acting on the decoded information to achieve descrambling. In the related art, the receiving terminal scrambling seed is notified by the sender, if scrambling code seed error occurred during transmission, descrambled data will cause errors. SUMMARY error occurs in the related art scrambling seed in the transmission process, the present invention proposes to cause the data descrambled wrong question, for this, the main object of the present invention is to provide a data processing method, apparatus and system for in order to solve the above problems. To achieve the above object, according to one aspect of the invention, there is provided a data processing method. The data processing method according to the present invention comprises: scrambling seed used to scramble the data sequence wherein the data sequence carries a parity bit, a parity bit parity scrambling code seed; data sequence transmitted scrambled. Parity bits for parity bit portion a scrambling seed in. Part bits are bits than 4 bits removed, especially tap location code generator 4 bit code, especially in the seed corresponding. Scrambling seed used to scramble the data sequence comprises: generating a random seed scrambling code using a scrambling sequence; scrambling sequence using a random sequence of data scrambled. Preclude the use of parity check mode scrambling code seed. To achieve the above object, according to one aspect of the present invention, there is provided a data processing method. The data processing method according to the present invention comprises: receiving the scrambled data sequence wherein the data sequence is scrambled using the scrambling code seed for scrambling the data sequence, the data sequence carries a parity bit, a parity bit scrambling seed to the check; determining the proper parity bit; scrambling seed used to scramble the data sequence after de-4 in particular. When the portion of bits for parity bit check bit scrambling seed, determining the correct parity bit comprising: using all bits of the code bits of 4, especially seeds, determining the correction - correct position insurance wherein the portion of bits is 4 bits code, especially seeds, especially in the 4 code generator tap locations other than the removal of the bits corresponding to the bits. When the parity bit for all bits of the check bits of the scrambler seed, determining the correct parity bit comprising: a bit portion using bit scrambling seed, determining the correct parity bit, wherein part bits are bits than 4 bits removed, especially tap location code generator 4 bit code, especially in the seed corresponding. To achieve the above object, according to another aspect of the invention, there is provided a data processing apparatus. The data processing apparatus according to the present invention comprises: a scrambling module, configured to use scrambling codes scramble seed data sequence wherein the data sequence carries a parity bit, a parity bit parity scrambling code seed; sending module provided to transmit the scrambled data sequence. To achieve the above object, according to another aspect of the present invention, there is provided a data processing apparatus. A data processing apparatus according to the invention: after the receiving module, configured to receive scrambled data sequence bad 'J, wherein the data sequence scrambled using a scrambling seed sequence of data scrambled data sequence carries School parity bit, the parity bit for parity scrambling code seed; determining module, configured to determine the correct check bits; descrambling module, configured to use scrambling seed descrambling data scrambled sequence. To achieve the above object, the present invention is a further aspect of the home, there is provided a data processing system. The data processing system according to the present invention includes a transmitting end and a receiving end, wherein the transmitting end comprises: a scrambling module, configured to use scrambling codes scramble seed data sequence wherein the data sequence carries a parity bit, a parity bit parity scrambling code seed; transmitting module transmits setting data sequence is scrambled; receiving terminal comprising: a receiving module arranged to receive a data sequence after scrambling; determining module, configured to determine the correct check bits; descrambling module provided descrambles the scrambled data sequence using a scrambling code seed. The present invention carries the parity bit data sequence by the sending end and the receiving end by parity check bits of the scrambling seed, in the related art to solve the scrambling seed errors occur during transmission, resulting in descrambling data error problem, which can ensure the correctness of the scrambling code seed, thereby avoiding descrambling data errors. BRIEF DESCRIPTION OF THE DRAWINGS described herein are intended to provide further understanding of the present invention, constitute a part of this application, exemplary embodiments of the present invention are used to explain the present invention without unduly limiting the present invention. In the drawings: FIG. 1 is a flowchart illustrating a data processing method according to an embodiment of the present invention; FIG. 2 is a flowchart of embodiments according to the present invention, two data processing method of the embodiment; FIG. 3 is a diagram in accordance with a preferred embodiment of the present invention schematic formula scrambling code; FIG. 4 is a flowchart illustrating a data processing method according to a preferred embodiment of the present invention; flowchart of a data processing method according to a second FIG. 5 according to a preferred embodiment of the present invention; FIG. 6 according to the preferred embodiment of the present invention flowchart of a data processing method III; FIG. 7 is a flowchart of a data processing method according to the fourth preferred embodiment of the present invention; FIG. 8 is a block diagram showing a structure of the data processing apparatus according to an embodiment of the present invention; FIG. 9 is an embodiment of the present invention a block diagram of a data processing apparatus according to II; FIG. 10 is an embodiment according to the present invention was Gen block diagram showing an example of a data processing system. DETAILED DESCRIPTION It is noted that, in the case of no conflict, embodiments and features of the embodiments of the present application can be combined with each other. Below with reference to accompanying drawings and embodiments of the present invention will be described in detail. Embodiment of the present invention provides a data processing method. FIG 1 is a, as shown in a flowchart of FIG. 1 according to the present invention, a data processing method according to the embodiment, comprising the steps S 102 to Step 4 4 Poly Poly S 104. Step S 102, using the scrambling code seed scrambled sequence of data, wherein the data sequence carries a parity bit, wherein the correction - correction bits for insurance - 4, especially dangerous code seed. Step S 104, transmits the scrambled data sequence. In the related art, a scrambling code seed error may occur during transmission, so that data errors caused by descrambling. Embodiments of the present invention, parity bits can be used to check whether the transmission is correct scrambling code seed, therefore, by the sending end carries correction in the data sequence - risk by using the correction bit and the receiving end - correction bits risk - the risk 4 Mrs code seed, we can guarantee the correctness of the code, especially 4 seed, thus avoiding data errors in particular 4 solution. Preferably, a portion of bits parity bit check bit scrambling seed in. In the preferred embodiment, in particular by using the correction plus 4 - Effect dangerous position, so that when the correction - correction bits risk - bit partial bits 4 insurance code, especially in the seed, the scrambled parity bit It is the check for all bits. Preferably, the portion of bits of bit scrambling seed is removed in the scrambling code generator of the tap position Xi Bu bits corresponding to the bit. Preferably, the scrambling seed used to scramble the data sequence comprises: generating a random seed scrambling code using a scrambling sequence; scrambling sequence using a random sequence of data scrambled. Preferably, preclude the use of parity --4 particular code seed insurance - insurance mode correction. In the preferred embodiment, preclude the use of the parity check mode scrambling seed, its implementation is simple and reliable. Embodiment of the present invention provides a data processing method. Second data processing method flowchart FIG 2 is an embodiment of the present invention, shown in Figure 2, includes the following steps S202 to Step 4 4 Poly Poly S206. Step S202, the received scrambled data sequence wherein the data sequence is scrambled using the scrambling seed data scrambling sequence, the scrambling data sequence carries the seed and the parity bit, the parity bit for check scrambling seed. Step S204, to determine the school - risk level is correct. Step S206, using the scrambling code seed for the scrambled data sequence descrambling. Preferably, when the parity bit for the partial bit parity bit scrambling seed, determining the correct parity bit comprising: using all bits of bit scrambling seed, determining parity bit correctly, some bits are bits other than bits of the scrambling code generator to remove the tap position bit scrambling seed in the corresponding. Preferably, when the correction - correction bits risk - when all bits of 4 bits insurance code, especially seeds, determining the correct parity bit comprising: a bit portion using bit scrambling seed, determining correction correct parity bit, wherein the bit is a portion of bits other than the bits removed scrambling code generator tap bit location scrambling seed in the corresponding. The following example procedure implemented in conjunction with embodiments of the present invention will be described in detail. It should be noted that the following preferred embodiments may be based on the IEEE802.11 system. Example 3 is a view of a preferred embodiment of formula schematic diagram of a scrambler according to a preferred embodiment of the present invention, shown in Figure 3, the scrambling code generator of the formula: S (x) = x 7 + x 4 + l. FIG 4 is a flowchart illustrating a data processing method according to a preferred embodiment of the present invention, as shown in FIG 4 allows the sender to transmit 108-bit data length, wherein the first seven bits plus 0 to 4, especially pre-stored, especially 4 code generator seeds 1001001, 100 information bits. Code generator 4 provided in particular of the formula: S (x) = x 7 + x 4 + l ( Figure 3). Sequence data is provided as eight bits and odd parity of all bits of the check, the first 8-bit data sequence Β 7 = Β 0 + Β λ + Β 2 + Β 3 + Β 4 + Β 5 + Β 6 + \ = 1 + 0 + 0 + 1 + 0 + 1 + 0 + 0 = 0, to generate a scrambling sequence and scrambling the data by the random code seed, especially 4. Scrambled data sequence of eight check bits S 7 = B 7 + s 7 = 0 + 1 + 1 = 0, if unsolved decoded at the receiving end, especially the first four data sequences, especially seven code seeds 1001011 4 8th bit is 0, the particular code seed 4, especially 4 to obtain the code sequence 0 of 8 bits, parity bit parity portion is not satisfied, the scrambling seed transmission errors, retransmissions required. According to a second preferred embodiment of FIG flowchart of a data processing method according to a second embodiment of the present invention according to a preferred 5, 5, the transmitting side needs to transmit a data length of 3080 bits, wherein the first seven bits plus 0 to 4, especially pre- stored code generator 4, especially seeds, information bits 3054, the first 9-16 reserved bits are all set to 1, in particular 4 is set seven code 0101010 scrambling seed. Code generator 4 provided in particular of the formula: S (x) = x 7 + x 4 + l ( Figure 3). 8-bit data sequence is provided for the odd parity check bits and is part, of the 8-bit data sequence code seed and 4, especially 4, especially code generator corresponding bit of the remaining bits except the exclusive OR: Β 7 = Β λ + Β 2 + Β 4 + Β 5 + Β 6 + \ = 1 + 0 + 0 + 1 + 0 + 1 = 1, then generated by the random code seed 4 4 esp particular code sequence and the data plus 4 in particular. Scrambled data sequence of eight check bits S 7 = B 7 + s 7 = 1 + 0 + 1 = 0, if unsolved decoded at the receiving end, especially the first four data sequences, especially seven code seeds 0101010 4 , 8-bit correction - insurance bit is 0, the solution need not be determined to meet the particular 4 odd parity, the scrambler seed transmitted correctly. Preferred embodiments of three 6 is a flowchart of data processing in accordance with a method according to a third preferred embodiment of the present invention, shown in FIG. 6, the transmitting side needs to transmit 10016-bit data length, wherein the first seven bits plus 0 to 4, especially pre- stored code generator 4, especially seeds, 10,000 bits of information, the first 9-16 reserved bits are all set to 1, the first 16 bits collectively service domain, the scrambling seed is set seven 0100111 scrambling. Code generator 4 provided in particular of the formula: S (x) = x 7 + x 4 + l ( Figure 3). 8-bit data sequence is provided for the even parity check bits and is part, the data sequence of the remaining bits of the 8-bit code seed, especially 4 isopropyl, especially with 4 bits corresponding to the code generator or other: Β 7 = Β λ + Β 2 + Β 4 + Β 5 + Β 6 = 1 + 0 + 1 + 1 + 1 = 0, then the code generated by the random seed, especially 4, especially 4 plus 4 data and code sequences in particular. Scrambled data sequence of eight-bit parity = ^ + ^ = 0 + 0 + 0 = 0, if unsolved, especially the first four data sequences, especially seven code seed 4 at the receiving end to decode 0100011, 8 correction bits - insurance bit is 0, the solution need not be determined in particular 4 parity is not satisfied, then the scrambling code seed transmission error. Preferred embodiments four to the flow chart according to a fourth method of data processing information bits according to a preferred embodiment of the present invention, as shown in FIG 7 allows the sender to transmit 25201-bit data length, wherein the first seven to four, especially code seed, 25193, set seven scrambler when scrambling seed 1,100,001. Code generator 4 provided in particular of the formula: S (x) = x 7 + x 4 + l ( Figure 3). 8-bit data sequence is provided for the even parity and the parity of all bits, then the data sequence of eight bits all scrambling seed XOR: 7 = + 2 + 4 + 5 + 6 = 1 + 1 + 0 + 0 + 0 + 0 + 1 = 1, and then generates a scrambling sequence and scrambling the data by the random code seed, especially 4. Scrambled data sequence of eight check bits for the scrambled ^ = ^ = 37 + 1 + 1 + 0 = 0, if unsolved decoded at the receiving end, especially the first four data sequences, especially seven code seed 4 is 1,100,001, the eighth bit is 0, it can be judged to meet the even parity bit portion, the scrambler seed transmitted correctly. It should be noted that the steps illustrated in the flowchart drawings can be executed in a computer system a set of computer executable instructions, and, although in the flowchart shown in a logical order, but in some cases, step may be performed in the illustrated or described in different order tetramers. Embodiment provides a data processing apparatus according to the present invention, the data processing means may be used to implement the above-described data processing method. 8 is a configuration diagram of a data processing apparatus according to the embodiment of the present invention, a block diagram, as shown, includes a scrambling module 82 and a sending module 848. The following detailed description thereof. Scrambling module 82, arranged to use scrambling seeds scrambled data sequence, wherein the scrambled data sequence carries a parity bit, wherein the parity bit for parity scrambling code seed; sending module 84 is connected to the plus scrambling module 82, configured to send the scrambled data sequence module 82 scrambling. Embodiment provides a data processing apparatus according to the present invention, the data processing means may be used to implement the above-described data processing method. FIG 9 is a block diagram showing a data processing apparatus according to an embodiment of the present invention, two, 9, includes a receiving module 92, module 94 determines and descrambling module 96. The following detailed description thereof. A receiving module 92, arranged to receive a data sequence after scrambling, wherein the data sequence is scrambled using the scrambling code seed for scrambling the data sequence, the data sequence carries a parity bit, the parity bit for checking scrambling code seed; determining module 94, connected to the receiving module 92, set correction to determine a receiving module receiving 92-- risk level is correct; solution 4 particular module 96 is connected to the determining module 94, set after determining module determines 94 using seed data scrambling sequence to descramble scrambled. Embodiment provides a data processing system according to the present invention, the data processing system may be used to implement the above-described data processing method. FIG 10 is a block diagram of a data processing system according to the embodiment of the present invention, shown in Figure 10, includes a transmission terminal 1002 and receiver 1004, described in detail below. 1002 transmitting end comprises: adding module 10022, especially 4, 4 is set to use the particular code seed scrambled sequence of data, wherein the scrambled data sequence carries scrambling seeds and the parity bit, wherein the parity bit for checking scrambling code seed; transmitting module 10024, 10022 is connected to the carrying module, configured to send data sequence carrying the scrambled scrambling module 10022 carrying seeds and parity bits; 1004 receiving terminal comprising: a receiving module 10042, configured to receive scrambled after the data sequence; determination module 10044, connected to the receiving module 10042, configured to determine reception module correction received 10042-- risk level is correct; solution 4, especially module 10046 is connected to the determining module 10044 is set after the determination module 10044 determines, seed data using scrambling sequence to descramble scrambled. As described above, according to the embodiment of the present invention, there is provided a data processing method, device and system. By sending end carries parity bit in the data sequence and the parity check using the scrambling code by the seed receiving end, the related art to solve the scrambling seed error occurs during transmission, thereby causing the error data descrambled the problem, which can ensure the correctness of the scrambling code seed, thereby avoiding descrambling data errors. Incidentally, the data processing system described in embodiments of the apparatus corresponding to the embodiment of the Example, the specific implementation process of the method described embodiments have been detailed, which is not described Like. Obviously, those skilled in the art will appreciate that the present invention each module or each step may be a general-purpose computing device, they can be integrated in a single computing device or distributed in a network composed of multiple computing devices on, alternatively, they may be implemented by program codes executable by a computing device, so that, to be performed by a computing device stored in a storage device, or they are made into integrated circuit modules, or they a plurality of modules or steps are manufactured into a single integrated circuit module. Thus, the present invention is not limited to any particular hardware and software combination. The above are only preferred embodiments of the present invention, it is not intended to limit the invention to those skilled in the art, the present invention may have various changes and variations. Where the ^ "the spirit and principle of the present invention, any modification, equivalent replacement, or improvement, should be included within the scope of the present invention.

Claims

Claims
A data processing method, comprising:
Scrambling seed used to scramble the data sequence, wherein said data sequence carries a parity bit, the correction - correction bits risk - the risk, especially 4 code seed;
Transmitting the data sequence plus 4 in particular.
The method according to claim 1, wherein the parity bit for the parity bit scrambling code portion of bits in the seed.
3. The method according to claim 2, wherein the portion of bits than the bits of the bit scrambling code generator 4, especially to remove the tap position of the bits in the code seed corresponding.
A method according to any one of the 1 to 3 claims, wherein the scrambling seed used to scramble the data sequence comprises:
4 using the particular code seed to generate a random code sequence, especially 4;
Using the random scrambling sequence to the scrambling data sequence.
5. The method according to any one of claims 1 to 3, wherein, preclude the use of the parity check mode scrambler seed.
6. - Species data processing method, comprising:
The received scrambled data sequence wherein the data sequence is scrambled using the scrambling code seed for scrambling data sequence, said data sequence carries a parity bit, the parity bit for checking the scrambling code seed;
Determining the correction - correct position insurance;
The scrambling seed used to sequence the data descrambling scrambled.
The method according to claim 6, wherein when said parity check bit for the bit scrambling portion of bits in the code seeds to determine the correct parity bit comprises: using the all bits of said particular 4 bits of the code seeds, determining the correction - removing the scrambling code generator of the bit position of the tap a scrambling seed in the risk level is correct, wherein the portion of the bit Bu Xi corresponding to the bits of the bit.
The method according to claim 6, wherein when said parity check bit for all the bits of the scrambling code bits seeds, determining the correct parity bit comprises: using the scrambling said bit portion of bits in the code seeds to determine the correct parity bit, wherein the removed portion of bits of the scrambling code generator of the bit position of the tap a scrambling seed in the corresponding bit bit bits of Xi Bu.
A data processing apparatus, comprising:
Scrambling module, configured to use scrambling code seed scrambled sequence of data, wherein said correction data is carried in the sequence - risk position, the correction - correction bits risk - the risk, especially 4 code seed;
Sending module to send the data sequence after scrambling.
10. - kind of data processing apparatus, comprising:
A receiving module, configured to receive the scrambled data sequence wherein the data sequence is scrambled using the scrambling code seed for scrambling data sequence, said data sequence carries a parity bit, the correction - insurance correction bits - 4, especially the insurance code seed;
A determining module, configured to determine the correction - correct position insurance;
Descrambling module arranged to use the scrambler seed data descrambling the scrambled sequence.
11. A data processing system comprising a sending end and a receiving end, wherein
The transmitting end comprising:
Scrambling module, configured to use scrambling code seed scrambled sequence of data, wherein said correction data is carried in the sequence - risk position, the correction - correction bits risk - the risk, especially 4 code seed;
Sending module, configured to send the scrambled data sequence;
The receiving end comprising:
A receiving module arranged to receive a data sequence after the scrambling;
A determining module, configured to determine the correction - correct position insurance;
Descrambling module arranged to use the scrambler seed data descrambling the scrambled sequence.
PCT/CN2011/076327 2010-12-17 2011-06-24 Data processing method, apparatus and system WO2012079358A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201010594723.0A CN102546079B (en) 2010-12-17 2010-12-17 Data processing method, apparatus and system for
CN201010594723.0 2010-12-17

Publications (1)

Publication Number Publication Date
WO2012079358A1 true WO2012079358A1 (en) 2012-06-21

Family

ID=46244039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/076327 WO2012079358A1 (en) 2010-12-17 2011-06-24 Data processing method, apparatus and system

Country Status (2)

Country Link
CN (1) CN102546079B (en)
WO (1) WO2012079358A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1675883A (en) * 2002-07-04 2005-09-28 因芬尼昂技术股份公司 Wlan error control
US7158058B1 (en) * 2002-12-09 2007-01-02 Marvell International Ltd. Method and apparatus for generating a seed set in a data dependent seed selector
US7234097B1 (en) * 2003-01-27 2007-06-19 Marvell International Ltd. Methods of supporting host CRC in data storage systems without RLL coding
US7269778B1 (en) * 2002-10-15 2007-09-11 Marvell International Ltd. Data coding for enforcing constraints on ones and zeros in a communications channel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1675883A (en) * 2002-07-04 2005-09-28 因芬尼昂技术股份公司 Wlan error control
US7269778B1 (en) * 2002-10-15 2007-09-11 Marvell International Ltd. Data coding for enforcing constraints on ones and zeros in a communications channel
US7158058B1 (en) * 2002-12-09 2007-01-02 Marvell International Ltd. Method and apparatus for generating a seed set in a data dependent seed selector
US7234097B1 (en) * 2003-01-27 2007-06-19 Marvell International Ltd. Methods of supporting host CRC in data storage systems without RLL coding

Also Published As

Publication number Publication date
CN102546079A (en) 2012-07-04
CN102546079B (en) 2016-04-13

Similar Documents

Publication Publication Date Title
JP6168503B2 (en) Method and apparatus
JP5928873B2 (en) Apparatus, methods and products
US8050227B2 (en) Method for transmitting uplink signals
JP5481759B2 (en) Radio communication apparatus using multiple layer cyclic redundancy check code
ES2561027T3 (en) Procedures for the reliable transmission of a control signal
US8472567B2 (en) Detecting the number of transmit antennas in a base station
RU2536661C2 (en) Techniques to reduce false detection of control channel messages in wireless network
US9119110B2 (en) Request to send (RTS) and clear to send (CTS) for multichannel operations
CN1853380B (en) Efficient automatic repeat request methods and apparatus
RU2331983C2 (en) Resources distribution method of downlink in sectored environment
KR101370901B1 (en) Method of communication in mobile communication system
KR100574960B1 (en) The dividing method for payload intra-frame
JP5122461B2 (en) Method and device for protecting a high throughput terminal
US20030100288A1 (en) Universal PLC radio frequency enhanced bridge
US8139660B2 (en) Methods and apparatus related to using a wireless terminal scrambling identifier
US20160249332A1 (en) System and Method for Auto-Detection of WLAN Packets Using Header
JP2011523296A (en) Dynamic scrambling method in a wireless network
JP2004135304A (en) Signal and control mechanism in mimoharq scheme for radio communication system
KR100388400B1 (en) Transmitting/receiving device and transmitting/receiving method
US5841864A (en) Apparatus and method for authentication and session key exchange in a communication system
US20120076043A1 (en) Wireless communication base station device, wireless communication terminal device, control channel transmission method, and control channel reception method
US20090238293A1 (en) OFDMA Based Medium Access Control and Frame Structure Design for Industrial Applications
KR100605813B1 (en) Apparatus and method for transmitting header information in a ultra wide band communication system
KR20010033887A (en) Transmitting/receiving device and transmitting/receiving method
KR20100098262A (en) Method of transmission

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11849089

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 11849089

Country of ref document: EP

Kind code of ref document: A1