255 results about "Orthogonal sequence" patented technology

A reference signal sequence assignment method and device are provided by which the influence of inter-cell interference can be reduced and the number of usable cyclic shifted sequences per sector can be increased. In a mobile communications system with a structure including multiple cells each including multiple sectors, a sequence assignment method is employed by which pseudo-orthogonal sequences used for reference signals are assigned to cells or sectors. According to this method, the multiple pseudo-orthogonal sequences are assigned to cells or sectors by using multiple repetition patterns.

The invention discloses a method of sending uplink hybrid automatic retransmission request (HARQ) feedback information; the method includes that: a terminal and a base station determine PHICH resource according to the index of downlink component carrier of physical hybrid retransmission indication channel (PHICH), PHICH group number and the index of orthogonal sequence in PHICH group; the base station transmits uplink HARQ feedback information based on determined PHICH resource. The invention also discloses a device for transmitting uplink HARQ feedback information and solves the transmissionproblem of uplink HARQ feedback information in advanced long-term evolution system (LTE-Advanced), and ensures LTE-Advanced terminal to operate normally in spectrum aggregation mode and enables the LET-Advanced to be compatible with LTE Release-8, and facilitates improving the scheduling flexibility and throughput of system.

The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22 / C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to Outage notification system features, and corresponding methodology and apparatus subject matters, both at the network and device level.

A method for allocating physical resources to an Acknowledgement (ACK) / Negative Acknowledgement (NACK) signal channel representative of a response signal in a wireless communication system. The method includes grouping ACK / NACK signal channels corresponding to a plurality of resource blocks used for transmission of a data channel or a control channel into a plurality of groups so ACK / NACK signal channels having consecutive indexes do not belong to the same group; and allocating same frequency resources to ACK / NACK signal channels belonging to the same ACK / NACK signal channel group and allocating orthogonal sequences so ACK / NACK signal channels in each ACK / NACK signal channel group are distinguished in a code domain.

A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦a predetermined number M, a preamble sequence for a kth antenna is S(t−(k−1)T / Q). If Q>M and k≦M, the preamble sequence transmitted for the kth antenna is S(t−(k−1)T / Q). If Q>M and k>M, the preamble sequence for the kth antenna is (−1)(ps−1)S(t−(k−1)T / Q). Here, S(t) is the orthogonal sequence, T is the period of the orthogonal sequence, and PS is an index indicating a transmission period of the preamble sequence. The preamble sequences are at least twice transmitted from the Q transmit antennas.

An embodiment of the invention provides a method for transmitting control information, a user device and a base station. The method for transmitting control information comprises of the steps of obtaining resource index of a physical uplink control channel (PUCCH), wherein the PUCCH is sued for transmitting uplink control information (UCI); obtaining sequence index of an orthogonal sequence of the PUCCH according to the resource index and obtaining the orthogonal sequence according to the sequence index; obtaining cyclic shift of a reference signal of the PUCCH according to the sequence index; and transmitting the UCI to the base station on the PUCCH according to the orthogonal sequence and the cyclic shift. The cyclic shift of the reference signal of the PUCCH for transmitting the UCI is obtained according to the sequence index, and the UCI is transmitted on the PUCCH according to the cyclic shift and according orthogonal sequence, and the UCI transmission performance can be improved.

The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22 / C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to apparatus and methodology subject matters relating to broadcast acknowledgement features.

The invention discloses methods and devices for allocating uplink control resources and transmitting uplink control information. The method for transmitting uplink control information comprises that: a terminal acquires the shift interval of a cyclic shift sequence, the resource number for feeding an acknowledgment (ACK) / a negative acknowledgment (NACK) back and an ACK / NACK feedback mode; according to the shift interval of the cyclic shift sequence and the resource number for feeding ACK / NACK back, the terminal determines an available spread spectrum sequence for feeding the ACK / NACK back, wherein the spread spectrum sequence comprises a cyclic shift sequence and an orthogonal sequence; and after receiving downlink data, the terminal transmits the ACK / NACK information to be fed back in the ACK / NACK feedback mode in an uplink control channel by using the available spread spectrum sequence. Thus, the transmission of many pieces of ACK / NACK information in one uplink control channel is realized in a system for realizing long-term evolution multi-carrier aggregation.

The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22 / C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to apparatus and methodology subject matters relating to Downlink routing mechanisms.

Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.

The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22 / C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to apparatus and methodology subject matters relating to real time clock distribution and recovery.

The invention discloses a multi-user information co-channel sending method and device, and a multi-user information co-channel receiving method and device. The multi-user information co-channel sending method comprises following steps: dividing N users into K groups; generating L superposition symbols according to the modulation symbols of each piece of user information in each group, wherein the K, N and L are integers, the L is more than or equal to K, the K is more than or equal to 1, the N is more than or equal to 2, and the L is not equal to 1; separately carrying out spread spectrum extension on the L superposition symbols by using different sequences in L orthogonal sequences with lengths of L, thus obtaining L symbol sequences; combining the L symbol sequences, thus obtaining combined symbol sequences; and sending transmitting signals formed by the combined symbol sequences. Through the methods and the devices of the invention, the problem that during NOMA downlink sending, in an actual fading channel, the risk of error propagation is great if symbol-level SIC is performed in the demodulation process of the terminal, which causes performance degradation, is solved; and the access performance is improved.

Aspects of the invention are directed to a transmit diversity method for use in a wireless terminal having a plurality of antennas and a wireless terminal configured to implement the method. The transmit diversity method includes using a different orthogonal sequence for each antenna, or group of antennas, for transmitting an uplink control channel from a wireless terminal to a base station. A first step of the method involves assigning at least one orthogonal sequence to one or more of the plurality of antennas, each of the plurality of antennas being assigned at least one orthogonal sequence. Once the orthogonal sequence is assigned, a further step involves scrambling a signal to be transmitted on the physical uplink control channel (PUCCH) using the at least one orthogonal sequence for each antenna thereby producing a scrambled PUCCH for transmission by each antenna. The scrambled PUCCH can then be transmitted on the plurality of antennas.

Provided is a method for transmitting an uplink Channel Sounding (CS) Reference Signal (RS) channel in a wireless communication system. The method includes transmitting symbols of the CS RS channel through an entire system band in a previously selected at least one of Long Blocks (LBs) constituting one time slot of a subframe; and transmitting symbols of control channels through a predetermined band in LBs remaining after symbols of the CS RS channel are applied in the time slot, by applying an orthogonal sequence determined according to the number of LBs to which symbols of the CS RS channel are applied.

The invention provides a set of highly orthogonal six-code universal sequences for use in bDNA singleplex and multiplex nucleic acid hybridization assays. The six-code orthogonal sequences do not cross-hybridize and thus, minimize or eliminate the 3-mer cross-hybridization inherent in the second and third generation bDNA assays. The highly orthogonal universal sequences may be used in singleplex or multiplex bDNA assays quantitatively and qualitatively to determine mRNA levels in a sample; to screen for and genotype targets, such as viruses, that are present in low volumes in a sample; to screen for and genotype SNPs; and to measure changes in the amount of a gene in a sample such as when gene amplifications or deletions occur. The highly orthogonal universal sequences may also be used as universal capture probes to selectively bind assay components in a way that facilitates their further analysis.

The invention discloses a beam position and phase measurement system and method based on the full digitalization technology. The system comprises a simulation front end part and a digital processing part. In the simulation front end part, the undersampling technology is utilized for carrying out undersampling on input signals from a beam position detector, the sampling rate is accurately adjusted through a phase-locked loop digitally controlled and is made to be four times larger than the digital intermediate frequency signal frequency obtained after the input signals of the beam position detector are undersampled, and a digital orthogonal sequence of the input signals of the beam position detector is directly obtained. In the digital processing part, digital processing is carried out on the digital orthogonal sequence obtained through undersampling of the simulation front end part, the beam position and the phase position of an accelerator are measured, and the phase position is modified on line in real time. Digital processing modules are integrated on a single chip FPGA, and the system structure is greatly simplified. By means of the appropriate sampling rate, the orthogonal sequence of the input signals is directly obtained after ADC sampling, and the signal phase position and amplitude digital processing algorithm is greatly simplified.

The embodiment of the invention provides a method for transmitting, receiving and processing information, a base station and user equipment. In the embodiment of the invention, UE (user equipment) can respectively extend four groups of modulating symbols to make at least one of two transmitted data sequence elements corresponding to the same subcarrier in two transmitted data sequences mapped on each subcarrier of a PRB (physical resource block) with a PUCCH (physical uplink control channel) corresponding to the same time slot of two antenna ports be 0, so that the UE can only use the same extending sequence to extend the two transmitted data sequences; in addition, first pilot frequency sequences placed on SC-FDMA (single carrier-frequency division multiple access) symbols for pilot frequency transmission in each time slot on the two antenna ports are orthogonal sequences after expansion of the same pilot frequency sequence, so that the two antenna ports can use the same pilot frequency sequence. Therefore, the uplink resource in the same PRB can support that the number of the UE which can send a control signaling in a PUCCH format 3 is doubled compared with the prior art, so that the resource utilization rate is improved.

The invention provides a method for transmitting ACK / NACK messages. As for each ACK / NACK message in multiple ACK / NACK messages corresponding to uplink transmission of multiple user equipment, a base station determines index position of the ACK / NACK message in downlink control information and puts the ACK / NACK message at the index position. Then, the ACK / NACK message is coded by the use of orthogonal sequence and repetition coding. Finally, the base station sends the downlink control information to the multiple user equipment. By the method provided by the invention, overhead of the ACK / NACK corresponding to the uplink transmission can flexibly be controlled and optimized, and the balance between flexibility of resource allocation and robustness of ACK / NACK transmission is realized. In addition, the method has little influence on existing standards and a current system and has good compatibility, and the method also can be applied in a scene of NCT lacking PHICH.

Orthogonal sequences can be developed and used for use training and synchronizing in CDMA and TDMA systems. In particular, once a sequence is developed that has the length of the product of the channel length and the number of transmit antennas, the sequence is offset by a different amount for each transmit antenna. For example, each sequence could be offset by a multiple of the channel length for each transmit antenna, where the multiple ranges from 0 to N−1, where N is the number of transmit antennas. Furthermore, by not using exactly the same amount of offset shifting for each transmit antenna, e.g., not having each signal offset by the channel length, but keeping the overall total shifting the same, e.g., the average of each shift is the channel length, it is possible to determine at a receiver from which transmit antenna a particular signal originated.

The frequency spectrum of a transmitter system is spreaded in the transmitter (1) through the codification of information bits by means of sequence pairs of Golay complementary sequences. The spectrum is received in the receiver (2) and is subject to a filter, which is adapted to the features of such sequences enabling the detection of digital levels corresponding to the original transmitted information. If pairs of orthogonal sequences, A amplitudes for moduling data, and N-PSK modulation are used, it is possible to get a transmission speed (C) equal to:Where B is to the null-to-null spread bandwidth used in Hertz. It allows an improvement in quality as compared to other digital-communication systems, which use spread spectrum techniques and CDMA, obtaining a process gain independent of the transmission speed.

A high speed wireless communication transmission technology of a generalized multi-carrier wireless transmission plan supporting multi-antenna transmission includes: 1, multi-carrier wireless transmission is to divide a channel into a set of parallel broadband sub-channels, the T-R end carries out merge and shunt of the sub-carries signals by a multi-carrier filter set, which quickly realizes it by the discrete Fourier transform, b, transmission of each sub-carrier applies an adaptive or a fixed double circular time slot structure, a circular orthogonal sequence pilot, high efficient encode and modulation and multi-antenna transmission technology to support high efficient packet data transmission, c, applying FD duplex or TD duplex to suite the WA cover and hot spot cover cellular communication environment, d, applying a mixed MA way of FDMA, TDMA and CDMA to share wireless resource and support the requirement of large dynamic sphere transmission.

The present technology relates to protocols relative to utility meters associated with an open operational framework. More particularly, the present subject matter relates to protocol subject matter for advanced metering infrastructure, adaptable to various international standards, while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field. The present subject matter supports meters within an ANSI standard C12.22 / C12.19 system while economically supporting a 2-way mesh network solution in a wireless environment, such as for operating in a residential electricity meter field, all to permit cell-based adaptive insertion of C12.22 meters within an open framework. Cell isolation is provided through quasi-orthogonal sequences in a frequency hopping network. Additional features relate to apparatus and methodology subject matters relating to cell size management.

In a method and an apparatus for a data transmission in transmission media which vary depending on noises from outside, connected apparatuses, connection methods such as multi-path, or the like, a Hadamard multiplexing / distribution, or a quadrature mirror filter multiplexing / distribution is performed. Also, data is multiplexed by using an orthogonal sequence, the multiplexed data is transmitted to a transparent transmission line, and the data received from the transparent transmission line is distributed by using the orthogonal sequence. Also, data is multiplexed by using the orthogonal sequence, the multiplexed data is interleaved on a frequency axis and a time axis, the interleaved multiplexed data is multiplexed by using the orthogonal sequence, the multiplexed data is distributed by using the orthogonal sequence, the distributed data is deinterleaved on the frequency axis and the time axis, and the deinterleaved data is distributed by using an orthogonal transform.

A communication system and method with orthogonal, block encoding is provided. Encoded signals are transmitted by repeating transmissions of symbol blocks with a phase or sign change selected for each block from a sequence of phase or sign changes. Different symbols are transmitted using orthogonal sequences. The decoding uses different orthogonal sequences for separating the received encoded signals into corresponding separate channels. The orthogonal encoding is removed from the encoded transmitted signals and corresponding ones of the repeated symbols are added in successively received repeated blocks after the orthogonal encoding is removed. A transmitter uses a digital source encoder to encode information into symbols, and each symbol is repeated a preselected number of times to successively produce groups of repeated bits. Each repeat bit is changed in phase or sing by application of a sign or phase change determined by a selected assigned orthogonal code associated with the transmitter. The sign changed bits are interleaved from a number of such groups to successively generate a number of blocks, each composed of the different sign or phase changed bits of the preselected number of repeated groups and having a collective sign or phase change corresponding to a common sign change or phase shared by all bits of the block. The interleaved blocks then modulate a radio signal for transmission.

A communication system and method with orthogonal, block encoding is provided. Encoded signals are transmitted by repeating transmissions of symbol blocks with a phase or sign change selected for each block from a sequence of phase or sign changes. Different symbols are transmitted using orthogonal sequences. The decoding uses different orthogonal sequences for separating the received encoded signals into corresponding separate channels. The orthogonal encoding is removed from the encoded transmitted signals and corresponding ones of the repeated symbols are added in successively received repeated blocks after the orthogonal encoding is removed. A transmitter uses a digital source encoder to encode information into symbols, and each symbol is repeated a preselected number of times to successively produce groups of repeated bits. Each repeat bit is changed in phase or sing by application of a sign or phase change determined by a selected assigned orthogonal code associated with the transmitter. The sign changed bits are interleaved from a number of such groups to successively generate a number of blocks, each composed of the different sign or phase changed bits of the preselected number of repeated groups and having a collective sign or phase change corresponding to a common sign change or phase shared by all bits of the block. The interleaved blocks then modulate a radio signal for transmission.

Systems and methodologies are described that facilitate improved resource management in a wireless communication system. As described herein, supergroups can be formed from groups of Physical Hybrid Automatic Repeat Request Channels (PHICHs) such that respective PHICH supergroups are multiplexed onto respective non-overlapping resource element subsets, thereby improving resource usage efficiency for the extended cyclic prefix case and limited numbers of transmit antennas. In one example described herein, even-indexed PHICH groups are mapped to a selected subset of resource elements in a group while odd-indexed PHICH groups are mapped to the remaining resource elements in the group. This mapping can be performed by modifying orthogonal sequences associated with the PHICH groups and / or by performing resource mapping in different manners for respective PHICH supergroups. Upon receiving a transmission of mapped PHICH information, a receiving entity can leverage knowledge of the mapping to decode transmitted PHICH information using the proper resource subset(s).

The invention discloses method and device for feeding back channel information by a scheduling terminal, which realizes the feedback of nonperiodic control channel information when the CQI (Channel Quality Indicator) information is transmitted by multi-subscriber. The method comprises the following steps of: sending a set channel information feedback content and the information in the feedback information type to a terminal by a base station; sending a scheduling command used for scheduling the terminal for channel information feedback to the terminal by the base station; and during passing through the scheduling command or before sending the scheduling command, sending the uplink resource information, the uplink demodulation pilot frequency sequence cycle shift information and the orthogonal sequence spread frequency information used for indicating the channel information fed back by the terminal to the terminal by the base station.

System and method for enabling the cohabitation of licensed and unlicensed communications devices. A method comprises at a receiver, receiving transmitted data, demodulating the transmitted data to produce spread symbols, despreading the spread symbols to produce received data, wherein the despreading comprises using an orthogonal sequence selected from a list of orthogonal sequences for use by all transmissions in the wireless network, and processing the received data.