Patent application number | Description | Published |
20090279705 | METHOD AND SYSTEM FOR DISTRIBUTING KEY OF MEDIA STREAM - A method and a system for distributing key of media stream are provided. The method comprises: determining, by a security management server, whether a domain to which the calling terminal belongs and a domain to which a called terminal belongs subscribe a key distribution protocol; generating a key based on encryption capability information obtained in a calling process, and distributing the generated key to the calling terminal and the called terminal, if the protocol has been subscribed; generating a key based on encryption capability information obtained in a calling process, and distributing the generated key to the terminal at the same side as the security management server, if the protocol has not been subscribed. By applying the disclosure, the key is generated by the security management server, so that complexity may be reduced for media stream key negotiation to facilitate promotion of media stream encryption service. | 11-12-2009 |
20100028009 | METHOD AND SYSTEM FOR DATA SYNCHRONIZATION IN PASSIVE OPTICAL NETWORKS - A system and method for data synchronization in Passive Optical Networks are disclosed. According to an embodiment, the present invention provides a method for providing upstream data synchronization in an optical communication network. The method includes sending data from an Optical Network Unit. The data includes a first data frame, which includes a header sequence, a synchronization segment, and a data segment. The synchronization segment includes 66 bits, which includes a first number of bits having nonzero values and a second number of bits having a value of zero. The first number is different from the second number. The method further includes receiving at least the first data frame by an Optical Line Terminal. The method also includes processing the first data frame. The method additionally includes selecting a first segment of the first data frame, the first segment including 66 bits. | 02-04-2010 |
20100199144 | Method and device for indicating an uncorrectable data block - A method and device for indicating an uncorrectable data block. The method includes: if a forward error correction decoding fails, setting synchronization character of at least one of the corresponding data blocks to a first character; and performing line decoding on the data block with the set first character, and outputting decoded data. With the invention, indicating the uncorrectable data block Simple and effective to a line decoding module can be implemented in case of a failure of FEC decoding. | 08-05-2010 |
20110044699 | METHOD, APPARATUS AND SYSTEM FOR TRANSMITTING UPSTREAM BURST DATA IN PON SYSTEM - A method, an apparatus and a system for transmitting upstream burst data in a passive optical network system. Delimitation of end of upstream burst data is realized in the method. The method includes: transmitting a sync pattern sequence and a burst delimiter after turning on a laser; transmitting data to be sent; and transmitting an end-of-burst delimiter after the transmitting of data to be sent is finished. A method for receiving upstream burst data and a related apparatus and system are also provided in the embodiments of the invention. | 02-24-2011 |
20110085511 | Signal Encoding Method and Device, Method for Encoding Joint Feedback Signal - A signal encoding method and device and a method for encoding a joint feedback signal are provided. The signal encoding method includes the following steps. When two carriers are configured with multiple-input and multiple-output (MIMO), Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) signals of the two carriers are combined into a joint feedback signal. The joint feedback signal is mapped into a codeword according to a predetermined mapping relationship between signals and codewords. Therefore, through the method for combining and encoding feedback signals of two carriers for transmission on a code channel in a dual cell (DC)-MIMO mode, bit error ratio (BER) and detection error cost are decreased, power overhead is saved, and a cubic metric (CM) value of the system is not affected, thereby enhancing the performance of the system. | 04-14-2011 |
20110085613 | MAPPING METHOD AND DEVICE FOR DISCONTINUOUS TRANSMISSION BITS - A modulation mapping method and device for Discontinuous Transmission (DTX) bits are provided. The method includes: receiving binary symbols from a downlink physical channel; replacing symbol values of DTX bits in the binary symbols with symbol values of non-DTX bits, to obtained updated binary symbols; and performing modulation mapping on the updated binary symbols. Using the DTX bits to replicate the non-DTX bits, the DTX bits are supplied to a receiving end as redundant information of the non-DTX bits, such that the performance for demodulating the non-DTX bits by the receiving end is improved. In addition, when the binary symbols on one branch are all DTX bits, modulation mapping is performed on the binary symbols on the same branch and then a real value 0 is output. That is, when the input symbols on only one branch are all DTX bits, the transmission channel for this branch may be closed down alone, and thus the system transmission power is lowered. | 04-14-2011 |
20110087945 | METHOD AND APPARATUS FOR ENCODING FEEDBACK SIGNAL - A method and apparatus for encoding feedback signals is provided. The method includes: encoding feedback signals of three carriers to output a bit sequence; and transmitting the bit sequence on a High Speed-Dedicated Physical Control Channel (HS-DPCCH). The step of encoding the feedback signals of the three carriers may specifically include: mapping the feedback signals of the three carriers into a codeword, in which the codeword can be selected from a codebook, and codewords in the codebook satisfy a particular code distance relationship. The method for jointly encoding feedback signals of three carriers in a Ternary Cell (TC) mode is provided. Feedback signals are transmitted over a single code channel. Therefore, power overhead is reduced, and system performance is improved. | 04-14-2011 |
20110097076 | METHOD AND DEVICE FOR SENDING UPLINK BURST DATA IN PASSIVE OPTICAL NETWORK SYSTEM - A method for sending uplink burst data in a passive optical network (PON) system includes: sending a synchronization pattern of the uplink burst data, the synchronization pattern being of a length, which is an integer multiple of 66 bits, and being formed by connection of 66-bit unit gene blocks; sending a burst delimiter (BD) of the uplink burst data; sending a forward error correction (FEC)-protected data in the uplink burst data; and sending an end of burst (EOB) delimiter of the uplink burst data. The technical solutions in the embodiments allow the use of a less complex equalizer at the reception end of a high-speed PON system. | 04-28-2011 |
20110181450 | METHOD AND APPARATUS FOR LINE CODING - The present invention provides a convolutional line coding method, including: constructing a sequence set, where the length of each sequence in the sequence set is n bits; selecting a balanced sequence in the sequence set, and obtaining source data of n−1 bits corresponding to the balanced sequence; performing Hamming distance detection for an unbalanced sequence in the sequence set to obtain source data of n−1 bits corresponding to the unbalanced sequence; sorting the balanced sequence and the unbalanced sequence according to an operation difference value, and generating a code table, where the source data of n−1 bits correspond to the sequence of n bits, and the code table is designed for line coding; and at time of encoding the source data of n−1 bits, obtaining a coding result of n bits according to a mapping relation in the code table. | 07-28-2011 |
20110311225 | METHOD AND DEVICE FOR SENDING UPSTREAM TRANSFER FRAME IN PASSIVE OPTICAL NETWORK - The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of non-zeros is the same as the number of zeros, and in a delimiter sequence, the number of non-zeros on odd bits is equal to the number of zeros on even bits, and the number of non-zeros on even bits is equal to the number of zeros on odd bits, the number of zeros on the odd bits is N, the number of non-zeros on the odd bits is M, a relation |N−M|≦1 is satisfied, the number of zeros in a continuous zero group is X, the number of non-zeros in a continuous nonzero group is Y, and a relation |X−Y|≦1 is satisfied. A device for sending an upstream transfer frame in a passive optical network is further provided. | 12-22-2011 |
20110311235 | BURST TRANSMISSION METHOD, AND RECEIVER RESETTING METHOD AND APPARATUS IN A PASSIVE OPTICAL NETWORK - A burst transmission method and a receiver resetting method and apparatus in a Passive Optical Network (PON) are provided. A burst receiver resetting method in a PON includes: receiving a preamble sequence and synchronizing data; after synchronizing the data, continuing to receive the data, and matching a Burst Terminator (BT); and resetting a receiver after successfully matching the BT. Meanwhile, an apparatus for implementing the method and a corresponding burst data transmission method are provided. By using the burst receiver resetting method and apparatus in the PON and the corresponding burst transmission method at an Optical Network Unit (ONU) burst transmission end, a Reach Extender (RE) does not need to unpack upstream burst bandwidth allocation information carried in downstream data. Therefore, the complexity of the implementation of the RE is reduced, and the method is simple and effective. | 12-22-2011 |
20120008609 | METHOD AND COMMUNICATION DEVICE FOR FEEDING BACK AND RECEIVING PRE-CODING CONTROL INDICATION INFORMATION - The present invention relates to the field of wireless network communications, and provides a method and a device for receiving and sending Pre-coding Control Indication (PCI) information in uplink Multiple-Input Multiple Output (MIMO) transmission or uplink Closed Loop Transmit Diversity (CLTD) transmission, so as to solve a problem that the uplink MIMO communication from a terminal to a Base Station (BS) is unable to be realized in the prior art. A BS transmitting method includes carrying a code sequence, which represents PCI information, in a feedback channel of a BS. The beneficial effect of the present invention is: by feeding back the PCI information, the terminal realizes the maximization of a block length supported by an existing channel condition after the uplink MIMO is introduced, so as to improve an uplink transmission rate. | 01-12-2012 |
20120027407 | METHOD AND DEVICE FOR SENDING UPSTREAM TRANSFER FRAME IN PASSIVE OPTICAL NETWORK - The present disclosure relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of non-zeros is the same as the number of zeros, and in a delimiter sequence, the number of non-zeros on odd bits is equal to the number of zeros on even bits, and the number of non-zeros on even bits is equal to the number of zeros on odd bits. | 02-02-2012 |
20120224853 | METHOD AND DEVICE FOR SENDING UPLINK BURST DATA IN PASSIVE OPTICAL NETWORK SYSTEM - A method for sending uplink burst data in a passive optical network (PON) system includes: sending a synchronization pattern of the uplink burst data, the synchronization pattern being of a length, which is an integer multiple of 66 bits, and being formed by connection of 66-bit unit gene blocks; sending a burst delimiter (BD) of the uplink burst data; sending a forward error correction (FEC)-protected data in the uplink burst data; and sending an end of burst (EOB) delimiter of the uplink burst data. The technical solutions in the embodiments allow the use of a less complex equalizer at the reception end of a high-speed PON system. | 09-06-2012 |
20120257887 | METHOD AND DEVICE FOR INDICATING AN UNCORRECTABLE DATA BLOCK - A method and device for indicating an uncorrectable data block. The method includes: if a forward error correction decoding fails, setting synchronization character of at least one of the corresponding data blocks to a first character; and performing line decoding on the data block with the set first character, and outputting decoded data. With the invention, indicating the uncorrectable data block Simple and effective to a line decoding module can be implemented in case of a failure of FEC decoding. | 10-11-2012 |
20120294609 | METHOD AND SYSTEM FOR DATA SYNCHRONIZATION IN PASSIVE OPTICAL NETWORKS - A system and method for data synchronization in Passive Optical Networks are disclosed. According to an embodiment, the present invention provides a method for providing upstream data synchronization in an optical communication network. The method includes sending data from an Optical Network Unit. The data includes a first data frame, which includes a header sequence, a synchronization segment, and a data segment. The synchronization segment includes 66 bits, which includes a first number of bits having nonzero values and a second number of bits having a value of zero. The first number is different from the second number. The method further includes receiving at least the first data frame by an Optical Line Terminal. The method also includes processing the first data frame. The method additionally includes selecting a first segment of the first data frame, the first segment including 66 bits. | 11-22-2012 |
20140006533 | Instant Messaging Terminal and Method for Displaying Session Message in Real Time | 01-02-2014 |
20140023367 | BURST TRANSMISSION METHOD, AND RECEIVER RESETTING METHOD AND APPARATUS IN A PASSIVE OPTICAL NETWORK - A burst transmission method and a receiver resetting method and apparatus in a Passive Optical Network (PON) are provided. A burst receiver resetting method in a PON includes: receiving a preamble sequence and synchronizing data; after synchronizing the data, continuing to receive the data, and matching a Burst Terminator (BT); and resetting a receiver after successfully matching the BT. Meanwhile, an apparatus for implementing the method and a corresponding burst data transmission method are provided. By using the burst receiver resetting method and apparatus in the PON and the corresponding burst transmission method at an Optical Network Unit (ONU) burst transmission end, a Reach Extender (RE) does not need to unpack upstream burst bandwidth allocation information carried in downstream data. | 01-23-2014 |
20140036400 | PROTECTION CIRCUIT OF POWER OVER ETHERNET PORT AND ETHERNET POWER-SOURCING EQUIPMENT - The present invention discloses a protection circuit of Power Over Ethernet (POE) port and an Ethernet power-sourcing equipment. The port protection circuit includes: a first common mode suppression component, a second common mode suppression component, and a rectifier bridge. A first input end and a second input end of the rectifier bridge are connected to a first direct current output end and a second direct current output end of a PoE control chip, respectively. A first output end or a second output end of the rectifier bridge is connected to an uncharged signal line of a PoE port. An end of the first common mode suppression component is connected to the first output end of the rectifier bridge, and another end thereof is grounded. An end of the second common mode suppression component is connected to the second output end of the rectifier bridge, and another end thereof is grounded. | 02-06-2014 |
20140233948 | METHOD AND DEVICE FOR SENDING UPSTREAM TRANSFER FRAME IN PASSIVE OPTICAL NETWORK - The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of zeros on the odd bits is N, the number of non-zeros on the odd bits is M, a relation |N−M|≦1 is satisfied, the max number of zeros in a continuous zero group is X, the max number of non-zeros in a continuous nonzero group is Y, and a relation |X−Y|≦1 is satisfied. A device for sending an upstream transfer frame in a passive optical network is further provided. | 08-21-2014 |