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94 results about "Forward compatibility" patented technology
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Forward compatibility or upward compatibility is a design characteristic that allows a system to accept input intended for a later version of itself. The concept can be applied to entire systems, electrical interfaces, telecommunication signals, data communication protocols, file formats, and computer programming languages. A standard supports forward compatibility if a product that complies with earlier versions can "gracefully" process input designed for later versions of the standard, ignoring new parts which it does not understand.
Method and apparatus for controlling inter-cell interference of control channels in ofdm-based hierarchical cellular system
InactiveUS20110261769A1Reduce Inter-Cell InterferenceTransmission path divisionMulti-frequency code systemsBroadcast channelsControl channel
A method and apparatus for controlling inter-cell interference of control channels of hierarchical cells in a hierarchical cellular system based on Orthogonal Frequency Division Multiplexing (OFDM) are provided. The inter-cell interference control method of a base station in a hierarchical cellular system based on Orthogonal Frequency Division Multiplexing (OFDM) includes transmitting a broadcast channel, including information on an available bandwidth that is a part of an entire bandwidth, to a terminal, transmitting a control channel including data channel allocation information for the entire bandwidth to the terminal, and transmitting a data channel, as informed by the data channel allocation information, to the terminal. The inter-cell interference control method and apparatus support cooperative transmission of hierarchical cells while maintaining both backward compatibility and forward compatibility.
Owner:SAMSUNG ELECTRONICS CO LTD
Method, medium, and apparatus for encoding and/or decoding video
InactiveUS20090110054A1Easily employedColor television with pulse code modulationColor television with bandwidth reductionComputer graphics (images)Forward compatibility
A method, medium, and apparatus for encoding and / or decoding video by generating a scalable bitstream formed with a base layer bitstream and an enhancement layer bitstream, in order to provide forward compatibility, is described. The method includes reconstructing an image having an extended bit-depth and an extended video format into an image having a base bit-depth and a base video format, encoding the reconstructed image, and as a result of the encoding of the image having the base bit-depth and the base video format, generating a base layer bitstream, and reconstructing the image having the extended bit-depth and extended video format into an image having the extended bit-depth and the base video format, and by using the result of the encoding of the image having the base bit-depth and the base video format, encoding the image having the extended bit-depth and the base video format, and generating an enhancement layer bitstream with a result of the encoding of the image having the extended bit-depth and the base video format and additional data required for the extended video format.
Owner:SAMSUNG ELECTRONICS CO LTD
Method, medium, and apparatus for encoding and/or decoding video
ActiveUS20090097549A1Improve image qualityColor television with pulse code modulationColor television with bandwidth reductionImaging qualityComputer science
A method, medium, and apparatus for encoding and / or decoding video by generating a scalable bitstream formed with a base layer bitstream and an enhancement layer bitstream in order to provide forward compatibility, the scalable bitstream comprising a base layer bitstream including a base quantized level and a base quantization parameter corresponding to a base bit-depth, and an enhancement layer bitstream including a residue between an extended quantized level and a compensated quantized level that is predicted from the base quantized level, and additional quantization information for refining the difference between an extended bit-depth and the base bit-depth, wherein a process for improving image quality is applied to at least one of the base layer and the enhancement layer.
Owner:SAMSUNG ELECTRONICS CO LTD
Method, medium, and apparatus for encoding and/or decoding video
InactiveUS20090074060A1Pulse modulation television signal transmissionPicture reproducers using cathode ray tubesComputer scienceForward compatibility
A method, medium, and apparatus for encoding and / or decoding video by generating a scalable bitstream formed of a base layer bitstream and an enhancement layer bitstream so as to have forward compatibility, wherein the enhancement layer bitstream comprises a bit-depth field of the enhancement layer, a frame or a picture type field of the enhancement layer in consideration of a frame or a picture type of the base layer, an additional quantization information field for obtaining a quantization parameter of the enhancement layer together with a quantization parameter of the base layer, an intra-macroblock field of the enhancement layer, and an inter-macroblock field of the enhancement layer.
Owner:SAMSUNG ELECTRONICS CO LTD
Method, medium, and apparatus for encoding and/or decoding video
InactiveUS20090003437A1Color television with pulse code modulationColor television with bandwidth reductionComputer scienceForward compatibility
A method, medium, and apparatus for encoding and / or decoding video by generating a scalable bitstream supporting at least two bit-depths with forward compatibility, wherein the scalable bitstream comprises a base layer bitstream including a base quantization level and a base quantization parameter corresponding to a base bit-depth, and an enhancement layer bitstream including residue between an extended quantization level and a compensated quantization level that is predicted from the base quantization level, and a refined quantization parameter for refining the difference between an extended bit-depth and the base bit-depth.
Owner:SAMSUNG ELECTRONICS CO LTD
Mapping method for reference signals and physical resource block
ActiveCN101594335AFacilitate extended reference signal designExtended Reference Signal DesignRadio transmission for post communicationMulti-frequency code systemsTime domainResource block
The invention provides a mapping method for reference signals and a physical resource block, which is used for mapping one-path or multi-path reference signals to the physical resource block of a long-term evolution system, wherein the physical resource block comprises 12 subcarriers on a frequency domain and comprises two continuous time slots with equal time domain lengths, and each path of reference signal comprises a plurality of reference signals. The method comprises the following steps: mapping the one-path or multi-path reference signals to N orthogonal frequency division multiplexing (OFDM) symbols of the physical resource block, wherein N is selected from one of 2, 3 and 4; and mapping each path of reference signals to M subcarriers on the OFDM symbols, wherein M is selected from one of 1, 2, 3 and 4. By defining the position of each reference signal in the physical resource block based on lamination, the method is comparatively simple to realize, improves the performance of an LTE system, is favorable for expanding to the design of the reference signals of high-order MIMO, and has good forward compatibility.
Owner:ZTE CORP
LAA system communication method and device
ActiveCN105656607AReduce overheadImprove estimation performanceTransmission path multiple useCarrier signalUser equipment
The invention provides a license assisted access (LAA) system communication method and device. The LAA system communication method comprises a step 1 that user equipment (UE) receives a high-level signal to determine the following information: first information including frequency bands of K carriers, second information including physical resource occupied in a sub-frame by each of K reference signal (RS) resource groups, and third information including that an antenna port of a target wireless signal and the K RS resource groups are co-located, wherein the K represents a positive integer larger than 1, the K RS resource groups respectively belong to the K carriers in the frequency domain, and at least one of the K carriers is configured in an unlicensed spectrum; transmission carriers of the target wireless signal is configured in the unlicensed spectrum. According to the LAA system communication method, on the premise of not increasing downlink RS redundancy costs, channel estimation performances are effectively improved, so that LAA LTE after introduction of the LBT technology keeps the maximum forward compatibility.
Owner:SHANGHAI LANGBO COMM TECH CO LTD
Trigger method for non-periodic channel state information feedback
ActiveCN102594528AMeet design needsGood forward compatibilityError prevention/detection by using return channelNetwork traffic/resource managementSystems designLTE Advanced
Owner:SHARP KK
Data base backup recovery method and device
InactiveCN101908064AAchieve forward compatibilityDigital data information retrievalError detection/correctionRecovery methodDatabase backup
Owner:ZTE CORP
Methods for protocol compatibility
InactiveUS20070005335A1TransmissionSoftware simulation/interpretation/emulationComputer compatibilityElectronic trading
The present invention relates to methods, a protocol, computer readable mediums and computer program products for establishing backward compatibility and forward compatibility of protocols used for communication between subsystems of an electronic trading system (10) having different software versions. The inventive method comprises the steps of: including a header containing generic packaging information including a table of protocol mismatch in each message for internal communication between the subsystems; and including content of each version in a separate sub-packet of the message, thereby allowing a receiving subsystem to unpack up to a certain version of the subsystem.
Owner:CINNOBER FINANCIAL TECH
Forward compatibility guaranteed data compression and decompression method and apparatus thereof
InactiveUS20120271802A1Normally performanceCompressed dataProgram control using stored programsDigital data processing detailsData compressionData compression ratio
A forward compatibility guaranteed data compression and decompression method and apparatus are provided. The compressed data decompression apparatus includes a compressed file parsing unit which parses a compressed file comprising compressed data, a header including information on the compressed data and an extension field to extract the compressed data, and an original file generating unit which decompresses the compressed data to generate an original file. The extension field includes one or more extension field units and an extension field terminating code indicating an end of a region capable of including the extension field units, each of the header and the extension field units starts with a data identification code having the same number of bytes, and the extension field unit further includes its own length data separated by a predetermined number of bytes from its own data identification code. If the data identification code of the extension field unit is not defined while the parsing is carried out based on the data identification code, the compressed file parsing unit skips the extension field unit using the length data without processing the extension field unit.
Owner:ESTSOFT CORP
Video game forward compatibility including software patching
ActiveUS20090172659A1Fully comprehendedProgram loading/initiatingVideo gamesComputer compatibilityHuman–computer interaction
Methods for updating video game software or handheld game devices, and systems for performing the methods. In some embodiments a first handheld game device with a later version of a game update software of a second handheld game device with an earlier version of the game.
Owner:ACTIVISION PUBLISHING
Realizing method of PTN forward compatible MSTP ring network service channel protection
InactiveCN101729350AImprove protectionRealize channel protectionTime-division multiplexData switching networksTelecommunicationsRing network
The invention relates to a channel protection method of a ring network, particularly to a channel protection method of a PTN forward compatible MSTP ring network system. When a ring network link goes wrong, facilities at both ends of a fault point respectively transmit AIS alarm indication signals to downstream facilities, the facilities receiving the AIS alarm indication signals then sequentially transparently transmit the signals to the downstream facilities, the AIS alarm indication signals are transmitted in the direction from an MSTP facility to a PTN facility at the joint of the PTN facility and the MSTP facility, the AIS channel alarm indication signals are inserted into a TMC layer of an NNI interface of the PTN facility, the AIS alarm indication signals are transmitted in the direction from the PTN facility to the MSTP facility, the AIS alarm indication signals of the TMC layer are inserted into a service channel of the MSTP facility, and a service initiating facility and a service finishing facility carry out concurrent selective receiving according to the received AIS alarm indication signals. The method provided by the invention effectively ensures the realization of channel protection when the PTN facility carries out forward compatibility for the MSTP facility.
Owner:FENGHUO COMM SCI & TECH CO LTD
Forward compatibility hooks for DFS and TPC for WLAN
A method provides forward compatibility hooks for DFS and TPC for WLAN, so that the same mechanisms can be employed (with only minor changes / additions) for other regulatory domains, other bands, and / or other purposes. The current IEEE 802.11 h standard defines mechanisms for dynamic frequency selection (DFS) and transmit power control (TPC) that may be used to satisfy regulatory requirements for operation in the 5 GHz band in Europe. The present method provides a format to allow other bands, and relates to the supported channels element, channel switch announcement element, and the Basic / CCA / RPI histogram request / report. The method optionally reserves more than 3-bits in the Basic report (Map subfield).
Owner:TEXAS INSTR INC
Database recovery method and device
InactiveCN104376073AAchieve forward compatibilityRealize online recoverySpecial data processing applicationsForward compatibilityRecovery method
The invention discloses a database recovery method and device. The method includes the steps that database information of an old version is obtained; database information of a new version is obtained; whether a data table structure of a database of the old version and a data table structure of a database of the old version are consistent is judged according to first data table structure information and second data table structure information, if the answer is positive, the database of the old version is directly restored in the database of the new version, and if the answer is negative, the next step is executed; according to the first data table structure information and the second data table structure information, a change type of the database of the new version relative to the database of the old version is obtained; according to a preset strategy corresponding to the change type, the database of the old version is directly restored in the database of the new version. By means of the database recovery method and device, forward compatibility of database recovery can be achieved.
Owner:RUN TECH CO LTD BEIJING
Embedded platform face detection method based on octave convolution and YOLOv3
ActiveCN110619309AHigh precisionReduce forward timeCharacter and pattern recognitionNeural architecturesFace detectionComputer module
The invention provides an embedded platform face detection method based on octave convolution and YOLOv3. The embedded platform face detection method comprises the following steps: S1, collecting a video stream and transmitting a video frame; S2, supplementing edges of the frame picture; S3, zooming the picture; and S4, sending the picture into a detection end-to-end model based on YOLOv3 and octave convolution, merging results and performing filtering. According to the octave convolution and YOLOv3-based embedded platform face detection method provided by the invention, the forward compatibility of the latest network module under a caffe framework is ensured; the maintenance cost of different embedded platforms on the algorithm is reduced, the model deployment is convenient, a tedious cascade architecture is abandoned, an end-to-end architecture capable of directly obtaining a result in forward calculation is used, and the development difficulty is greatly reduced.
Owner:TIANJIN TIANDY DIGITAL TECH +1
Method and Apparatus for Recovering Database Backup
InactiveUS20130024427A1Forward compatibilityDigital data information retrievalDigital data processing detailsDatabase backupComputer compatibility
Owner:ZTE CORP
Methods, devices and systems for sending and receiving Bluetooth data
InactiveCN104333401AReduced availabilityRelieve pressureNear-field transmissionWireless commuication servicesNetwork packetComputer module
The invention is applicable for the technical field of Bluetooth, and provides methods, devices and systems for sending and receiving Bluetooth data. The Bluetooth data sending method comprises the steps of: obtaining to-be-sent Bluetooth data written by adopting a Bluetooth protocol by sending equipment, configuring a flag bit based on a Bluetooth command in the Bluetooth data to generate a to-be-sent Bluetooth data packet, and sending the Bluetooth data packet to receiving equipment, wherein the flag bit is used for judging whether the command in the Bluetooth data packet belongs to the existing command in the Bluetooth protocol. According to the Bluetooth data sending method, the problem that the Bluetooth chip of a generated Bluetooth data packet cannot work when a new command is not defined in the Bluetooth protocol is solved. The methods, devices and systems for sending and receiving Bluetooth data have the beneficial effects in two aspects as follows: on one hand, the difficulty of developing Bluetooth products is decreased and usability of the Bluetooth protocol is improved; on the other hand, forward compatibility of the Bluetooth protocols in low versions is realized, pressure of processing data by a Bluetooth module is lowered, and compatibility and transportability of the systems is improved.
Owner:SHENZHEN GRANDSUN ELECTRONICS
Information sending method, receiving method, user equipment, and base station
PendingCN107370579AEasy to sendSupport dynamic TDDError preventionTransmission path divisionComputer scienceUser equipment
Embodiments of the invention disclose an information sending method, a receiving method, user equipment, and a base station, which can better support dynamic TDD and can maintain forward compatibility. The method according to the embodiments of the invention includes the steps of determining, by a first device, the position of a reference signal; and sending or receiving, by the first device, the reference signal according to the determined position of the reference signal.
Owner:BEIJING HUAWEI DIGITAL TECH
Storage array configuration preservation and arbitration method
ActiveCN104461388AImprove consistencyImprove reliabilityInput/output to record carriersSystem configurationPreservation methods
The invention relates to a storage array configuration preservation and arbitration method and belongs to the technical field of computer storage. The preservation method comprises the following steps: firstly dividing a configuration area and a configuration metadata area from a single disc; then obtaining system configuration data, compressing and packing the system configuration data and calculating configuration metadata from the compressed and packed system configuration data; successively, writing the configuration metadata into configuration metadata areas of all discs in a storage array; finally, writing the configuration data into configuration areas of all of the discs in the storage array. The arbitration method comprises the following steps: firstly reading the configuration metadata of all of the discs; then selecting candidate export discs according to system serial numbers and certain rules; successively, ruling out the export disc from the candidate export discs according to MD5 and a sequence; then exporting the configuration data from the export disc, decompressing, and preserving for later use of a system. Compared with a traditional configuration management method, the storage array configuration preservation and arbitration method has the benefits that storage configuration can be furthest restored; a storage system without configuration management is subjected to forward compatibility, so that system upgrade is facilitated.
Owner:TOYOU FEIJI ELECTRONICS
BGP (Border Gateway Protocol) routing trusted verification method based on SDN (Software Defined Network) architecture
ActiveCN106656792AGuaranteed safe and reliableImprove real-time performanceData switching networksValidation methodsClosed loop
The invention relates to a BGP (Border Gateway Protocol) routing trusted verification method based on SDN (Software Defined Network) architecture. The method comprises the following steps: I, building a BGP routing trusted verification environment based on the SDN architecture; II, acquiring BGP neighbor information by a centralized control point; III, detecting anomalies in a centralized way by the centralized control point, verifying whether BGP routing is trustable or not, if so, ending, otherwise, entering a step IV; IV, generating a security policy for blocking the anomalies by the centralized control point; V, issuing the security policy by the centralized control point to block anomalous routing; and VI, verifying whether the anomalous routing is blocked or not by the centralized control point by a method of reading a BGP neighbor information table once again by an agent, transmitting the BGP neighbor information table to the centralized control point through a NETCONF protocol, and turning to the step III. Compared with an existing BGP routing trusted verification method, the BGP routing trusted verification method disclosed by the invention has the advantages that the deployment overhead can be lowered; the anomaly detection performance and real-time performance are enhanced; the anomalies are blocked through closed-loop control; forward compatibility and high expandability are realized; and the overall cost-performance ratio of a system is increased greatly.
Owner:NAT UNIV OF DEFENSE TECH
Method for realizing forward compatibility of protocol versions in 3G RRC ASN.1 structure at UE (user equipment) side
InactiveCN102055723AIncrease flexibilityReduce maintenance costsProgram controlTransmissionBuilt environmentForward compatibility
The invention provides a method for realizing the forward compatibility of protocol versions in a 3G RRC ASN.1 structure at the UE (user equipment) side, which comprises the following steps: classifying all information elements in a 3G RRC ASN.1 structure according to the situation that whether information elements in a 3G RRC ASN.1 structure are changed in the process of version evolution; generating header file analysis tools and coding / decoding analysis tools according to the classification of the information elements; analyzing an ASN.1 structure by using the header file analysis tool so as to generate header files related to a build environment; and generating a code for realizing message coding / decoding by using the coding / decoding analysis tools and the header files related to the build environment. According to the scheme provided by the invention, normal communication between the UE and networks in different protocol versions can be realized under the condition of no network protocol version information without a plurality of sets of implementation codes and any additional manual interventions, thereby greatly reducing the maintenance cost of the codes and improving the flexibility of a protocol.
Owner:MEDIATEK INC
Application compatibility with library operating systems
Application compatibility is facilitated by use of library operating systems. Library operating systems can encapsulate portions of an application likely to break application compatibility. An application can be bound to a compatible library operating system that operates over a host operating system. Furthermore, library operating system version can be greater than, equal, or less than the version of the host operating system. Consequently, both backward and forward compatibility is enabled.
Owner:MICROSOFT TECH LICENSING LLC
Device and method for enabling vehicle-mounted terminal to be compatible with active and passive antennas
ActiveCN104768237ASolve the problem of interchangeabilityWireless communicationMicrocontrollerForward compatibility
The invention discloses a device and method for enabling a vehicle-mounted terminal to be compatible with active and passive antennas. The device comprises an antenna detection circuit, a microcontroller, a storage and a central processing unit, wherein the antenna detection circuit is used for detecting whether the antenna connected with the antenna detection circuit is an active antenna or a passive antenna and outputting corresponding status information, the microcontroller judges whether the antenna is the active antenna or the passive antenna on the basis of the status information output by the antenna detection circuit and outputs corresponding control information, the microcontroller is connected with the antenna detection circuit, the storage is used for storing configuration files including the passive antenna configuration file and the active antenna configuration file, the central processing unit calls the configuration file corresponding to the antenna from the storage on the basis of control information output by the microcontroller and configures antenna parameters in the configuration file into a radio chip, and the central processing unit is connected with the microcontroller, the storage and the radio chip. According to the device and method for enabling the vehicle-mounted terminal to be compatible with the active and passive antennas, the vehicle-mounted terminal can be compatible with the active and passive antennas at the same time, and forward compatibility of the vehicle-mounted terminal is achieved.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
PCB version recognition device and method
ActiveCN101216764AGuaranteed Forward CompatibilitySpecific program execution arrangementsSoftware engineeringIdentification device
The invention discloses a PCB version recognising device, which comprises: a PCB version unit, which is used to mark the PCB version information; a PCB version state unit, which is used to detect and save the PCB version information. The invention also discloses a PCB version recognising method. With the invention, the compatibility of the upgrade software with the prior version can be ensured, therefore, avoiding upgrading logic version simply only for the PCB version recognition.
Owner:ZTE CORP
Bus architecture for multiprocessor parallel communication
InactiveCN103488605AImprove communication efficiencySolve the problem of mutual communicationMultiple digital computer combinationsCommunication interfaceMulti processor
The invention relates to a bus architecture for multiprocessor parallel communication. The bus architecture for the multiprocessor parallel communication comprises a communication bus communicated with central processing unit (CPU) plugins, wherein the communication bus comprises M serial channels, each CPU plugin is provided with at least M communication interfaces, and the communication interfaces of the CPU plugins are connected with the serial channels in a one-to-one correspondence mode. The bus architecture adopts a total-exchange serial bus which is substantially of a multiple-transmitting-receiving-node serial bus structure and used for multiprocessor data exchange. Therefore, the communication problem of an arbitrary number of slot position processors is solved, meanwhile the communication efficiency of the processors is improved, and multi-task and multiple-CPU parallel processing application with high real-timeliness requirement is met. The bus architecture for the multiprocessor parallel communication has good continuity and forward compatibility technically, subsequent investment in research and development can be saved, only CPU and backboards are locally required to be changed, other types of IO plugins are not required to be changed, and therefore the investment benefit can be maximized.
Owner:XUJI GRP +2
Method, system and device for broadcasting system information
ActiveCN101686529AReduce expensive problemsGuaranteed forwardSynchronisation arrangementAssess restrictionCarrier signalBroadband
The invention provides a method for broadcasting system information, which comprises the following steps: a base station transmits a broadcast message within the frequency band of a long-term evolution broadband system (LTE-A), wherein at least one carrier wave within the LTE-A frequency band is visible for both long-term evolution (LTE) terminals and LTE-A terminals, a synchronous channel (SCH) of the LTE-A system and an SCH of the LTE system are configured in the carrier wave, and the carrier wave also carries the system information of the LTE-A system and the LTE system; and the terminal carries out down time-frequency synchronization with the base station according to own capacity information and acquires the corresponding system information. By utilizing the method for broadcasting system information in the invention, both the LTE terminals and the LTE-A terminals can correctly read the broadcast message, thereby ensuring the forward compatibility and the backward compatibility.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Method and system for realizing forward compatibility of MSTP (Multi-Service Transfer Platform) equipment to PTN (Packet Transport Network) equipment platform
ActiveCN105634647AImprove network performanceExpand the scope ofTime-division multiplexTransmission format adaptationSystem requirementsMulti protocol
The invention discloses a method and a system for realizing forward compatibility of MSTP (Multi-Service Transfer Platform) equipment to a PTN (Packet Transport Network) equipment platform. The method comprises: decomposing PDH (Plesiochronous Digital Hierarchy) signals or SDH (Synchronous Digital Hierarchy) signals into continuous PDH payload E1 / T1 / E3 / T3 signals or SDH payload VC12 / VC-4 signals; cutting the continuous PDH payload signals or the SDH payload signals into PDH or SDH payload data slices with fixed lengths according to an SAToP (Structure-Agnostic TDM over Packet) protocol or a CEP (Circuit Emulation over Packet) protocol based on the lengths required by a system, forming an SAToP frame format or a CEP frame format by using the data slices as payloads, packaging the data slices into an Ethernet frame by adding an MPLS (Multi Protocol Label Switching) or VLAN (Virtual Local Area Network) identifier, and sending the Ethernet frame to an opposite end; sending, by the opposite end, the received Ethernet frame to a corresponding SAToP receiving module or a CEP receiving module, separately recovering the continuous PDH payload signals or the SDH payload signals by using a differential clock mode, and obtaining PDH signals or SDH signals via a signal recombination module. By adopting the method and the system, the reformed PTN equipment has the function of the MSTP equipment, so that the networking capability and range of the PTN equipment are improved, and the life cycle of the equipment is prolonged.
Owner:FENGHUO COMM SCI & TECH CO LTD
Method used for data sending of subchannel-modulation mode and device
ActiveCN101610144AAchieving Forward CompatibilityForward compatibleWireless network protocolsMulti-frequency code systemsComputer hardwarePhysical layer
The invention relates to a method used for data sending of a subchannel-modulation mode, comprising a DATA part for utilizing a first modulation coding mode to construct a first physical frame unit by a first MAC frame, a DATA part for utilizing a second modulation coding mode to construct a first physical frame unit by a second MAC frame, a combining structure for combining the first physical frame unit and the second physical frame unit into a physical frame unit, and a physical layer superframe, wherein, the first modulation coding mode is a modulation coding mode defined in 802.11a / g / n protocol; and the second modulation coding mode is a modulation coding mode based on the subchannel-modulation mode and the physical layer superframe is used for sending combining structures containing the physical frame units. The method not only can lead the currently-transmitted frame header to be read and understood by other subchannel-modulation mode sites, but also can lead the frame header to be read and understood by the 802.11a / g / n site, thus being capable of realizing forward compatibility of the existing 802.11a / g / n site to the subchannel-modulation mode sites in the transmission of the subchannel-modulation mode signals.
Owner:BEIJING NUFRONT MOBILE MULTIMEDIA TECH
Methods of two-stage scheduling in downlink control channel
The application provides a method of two-stage scheduling in downlink control channel to enhance downlink control information (DCI) forward compatibility and hardware flexibility. The DCI comprises abasic DCI and an extended DCI. The basic DCI provides basic scheduling information of the scheduled data. The extended DCI provides extended scheduling information of the scheduled data channel. The basic DCI can be unicast to a single UE over UE-specific search space. The basic DCI can also be broadcast or multicast to a group of UEs over common search space. UE performs blind detection of the basic DCI only, while the location and size of the extended DCI can be provided by the basic DCI or provided by a higher layer signaling. Cross-slot / subframe and Multi-slot / subframe scheduling can alsobe applied in the two-stage scheduling.
Owner:MEDIATEK INC
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