643 results about "Transport format" patented technology

Disclosed is a code division multiple access (CDMA) communication system having a downlink dedicated physical channel (DL_DPCH) having a downlink dedicated physical control channel (DL_DPCCH) and a downlink dedicated physical data channel (DL_DPDCH). The DL_DPCCH having a transport power control (TPC) field transmitting a TPC command for controlling uplink transport power, a transport format combination indicator (TFCI) field transmitting TFCI indicating a transport format combination of a currently transmitted channel, and a pilot field transmitting a pilot. The DL_DPDCH has first and second data fields transmitting downlink data. If data is normally received over an enhanced uplink dedicated channel (EUDCH), ACK information is generated, and if data is abnormally received over the EUDCH, NACK information is generated. Bits corresponding to the ACK or NACK information are punctured at a position randomly selected from the first and second data fields of the DL_DPDCH, and the ACK or NACK information is inserted into the punctured position before being transmitted.

Method for informing a mobile terminal (MN), which is located in a first cell, on system information of a second cell. In particular, pointers to the system information are transmitted from the base station of the first cell to the mobile node, while the mobile node is located in the first cell. The MN processes said pointer, comprising e.g. information on the transmission format and timing of system information in the second cell. Using an acquisition gap assigned by the network, the MN changes the frequency to the second frequency so as to acquire the system information based on the previously received scheduling information. Thus, the acquisition time for important system information may be reduced, as no Master Information Block on the second frequency has to be processed first, in order to acquire the system information.

A method and an apparatus for data transmission in a mobile telecommunication system supporting an enhanced uplink service are provided. A Transport Format Combination (TFC) selector determines TF information for data to be transmitted through a first data channel not supporting Hybrid Automatic Repeat reQuest (HARQ) and a second data channel supporting HARQ, and determines gain factors for the first and second data channel, and first and second control channel carrying control information for the first and second data channel. The gain factors are input to a physical channel transmission controller, and the physical channel transmission controller reduces the gain factor for the second channel if total transmit power required for transmission of the channels exceeds the predetermined maximum allowed power. A gain scaler adjusts transmit powers of the channels using the scaled gain factor and gain factors for the first data channel, the first control channel and the second control channel.

The present invention relates to a method and mobile terminal for transmitting data on uplink within a mobile communication system. Further the invention relates to a network entity for allocating uplink resources to such a mobile terminal. When a user equipment is transmitting uplink (UL) data according to allocated resources, it has to indicate the transport format of the current data transmission to Node B by means of UL control signaling. To propose a scheduling scheme which reduces the overhead of uplink control signaling, a method is proposed that achieves a significant reduction of the UL control signaling overhead by considering characteristics of an orthogonal radio access scheme used for evolved UTRA uplink scheme and using differential signaling of the transport format information. Although the invention is particularly suitable for uplink transmissions in an orthogonal single-carrier radio access scheme, it is not restricted to this particular embodiment.

This invention includes methods and packet switches that translate a packet between a switching format and a transport format. One packet switch receives a packet intended for a destination port of a packet switch from a switching fabric of the packet switch and determines, based on the destination port, a treatment to be applied to the packet. The packet switch then applies the treatment to the packet prior to forwarding the packet to the destination port. The treatment may include adding a transport identifier to the packet.

A method and system is described that flexibly and efficiently adjusts uplink data transmission rates in a wireless communication system. In particular, a transport format limit indicator (TFLI) indicating the allowed changes to available transport formats, including, for example, the maximum allowed uplink data transmission rate, is sent by a network node to a user equipment, without a prior request from the user equipment for such information. The user equipment may then adjust its uplink rate based on the TFLI when desired without having to make a request for rate information from the network node.

An improved method for packet transmission scheduling and an improved packet transmission scheduling system in mobile telecommunication systems. Both the improved method and the system especially adapted to be used for UMTS systems. A quality of service scheduling of multiple data flows in a mobile telecommunication system is proposed, wherein a priority order of protocol data units (PDU) of multiple data flows with regard to predefined flow's quality of service requirements is determined, a serving of the protocol data units (PDU) is performed by dynamically determining transport blocks (TB) to be transmitted by the physical layer (PHY-layer) with regard to the defined priority order and in dependence of allocated radio resource constraints, by assigning to each transport block (TB) a respective associated transport format (TF), and by creating transport block sets (TBS) with the determined transport blocks (TB) to be transmitted by the physical layer (PHY-layer) by using the respective associated transport format (TF) as assigned.

A method and apparatus for transmitting scheduling grant information by a TFCI in Node B controlled scheduling of uplink packet transmission. In one embodiment, a scheduling command resulting from Node B controlled scheduling is mapped onto a TFCI and transmitted on the downlink. In another embodiment, an ACK / NACK signal determining retransmission of uplink packet data is mapped onto a TFCI and transmitted on the downlink.

Transmissions on the dedicated channel are encoded using a set of paramaters that are picked from a large selection of potential parameters. If the remote station does not know the particular set of parameters that were used by a base station, then the remote station would have to attempt to decode the transmission using every set of parameters, until the transmission is decoded correctly. This is an inefficient methodology. Hence, transmission format information is typically transmitted on a broadcast channel so that a remote station could receive the transmission format information. However, the broadcast channel has reliability problems. New methods and apparatus are presented to allow a base station to determine an overlapping set of Walsh code sequences that can be used to send the transmission format information on the dedicated channel, rather than a broadcast channel. Using the overlapping set allows the remote station to decode the information.

A base station (Node B) 12 provides information to a Radio Network Controller (RNC) 16 on how well User Equipment (UE) 14 subject to Node B scheduling is served for an Enhanced Dedicated Uplink Channel (E-DCH). This may be done for instance by the Node B measuring or estimating 22 the requested data rate per UE / cell, and communicating 24 the measured or estimated information to the RNC for enabling the RNC to perform Radio Resource Management (RRM). The RNC is thereby enabled to know the quality of the E-DCH transmission service per UE / cell. In addition to helping Admission Control and Load Control, it also enables the RNC to reconfigure the transport format combination set (TFCS) for E-DCH with more accurate timing. The UE and the Node B exchange information such as rate request / grant or UE Buffer and Transmit Power Status / Scheduling Assignment.

A data compression method and data communication system utilizing the same includes: a sender apparatus that compares, in response to input of data to be sent, the input data with the previously sent data in storage. The sender apparatus produces, when a data item repeated in the input data and previously sent data is found, delta data by excluding the repeated data item from the input data. The sender apparatus represents the delta data in a transport format, and transmits the delta data. The system includes a receiver apparatus that receives the data in a transport format. The receiver apparatus adds, when delta data is present in the received data, a repeated data item to the delta data, and recovers the original data. The sender apparatus sends and receives data to and from the receiver apparatus through a text-based protocol.

Disclosed is a method and an apparatus for multiplexing and transmitting data and uplink control information, and receiving the data and control information in a wireless communication system. In the system multiplexing an uplink packet data channel and a control channel, a transport format of the control channel for transmission of the control information is changed according to the transport format of the data channel. The disclosed method and apparatus can control the quantity of resources for the control channel in the case of transmitting high speed data, and thus can the efficiency of the data channel resources.

A method of transmitting a channel quality indicator (CQI) in a wireless communication system is provided. The method includes receiving an uplink grant on a downlink channel, the uplink grant comprising a CQI report indicator, a transport format field and a resource assignment field, the CQI report indicator indicating whether a CQI is reported, the transport format filed indicating a transport format of the CQI, the resource assignment field indicating the number of resource blocks used for reporting the CQI and transmitting the CQI on an uplink channel by using the uplink grant.

A method of dynamically preparing a media clip for delivery from a server to a client is provided. Media attributes comprising media playback formats compatible with the client are provided to the server. A request is made by the client to provide a media content item at a specified starting time, and the server identifies a source where a media content file related to the selected media content item is located. The server obtains the media file from the source, and obtains a transcoded media segment file having a playback format compatible with the client media attributes. The transcoded media segment file may further be prepared in a transport format that is compatible with transport format media attributes of the client device, and a location of the prepared transcoded media segment file may be communicated to the client for the client to access the media segment.

A method and an apparatus for data transmission in a mobile telecommunication system supporting an enhanced uplink service are provided. A Transport Format Combination (TFC) selector determines TF information for data to be transmitted through a first data channel not supporting Hybrid Automatic Repeat reQuest (HARQ) and a second data channel supporting HARQ, and determines gain factors for the first and second data channel, and first and second control channel carrying control information for the first and second data channel. The gain factors are input to a physical channel transmission controller, and the physical channel transmission controller reduces the gain factor for the second channel if total transmit power required for transmission of the channels exceeds the predetermined maximum allowed power. A gain scaler adjusts transmit powers of the channels using the scaled gain factor and gain factors for the first data channel, the first control channel and the second control channel.

The invention suggests a method for providing control signalling in a communication system of generating a control channel signal comprising a transport format and a channel quality indicator trigger signal for triggering a transmission of a channel quality indicator by at least one terminal to the base station, and transmitting the generated control channel signal to at least one terminal, wherein said transport format is a predetermined format for user data transmission by the at least one terminal to the base station and said control channel signal indicates a predetermined mode for reporting the channel quality indicator to the base station, wherein the channel quality indicator transmission is to be triggered by the at least one terminal based on the channel quality indicator trigger signal.

A method and apparatus for transport format selection in a mobile wireless communication device. During a simultaneous voice and data call, the mobile wireless communication device selects a transport format for proper uplink data transmission. Simultaneous voice and data calls require higher uplink transmit power than voice only calls. The mobile wireless communication device selects a transport format based on the uplink transmit power level. At higher transmit power levels, minimum or zero data rates are chosen to maintain sufficient power for simultaneous voice. Transmit format is specified using a transmit format combination indicator.

Techniques for recovering data transmitted on a physical channel in which the channelization code is not known at the time of the data recovery. A modulated signal is received an processed to provide received samples. A hypothesized channelization code (e.g., an OVSF code in the W-CDMA system) is selected and used to process the received samples to generate partially processed symbols. The hypothesized channelization code is a “base” code that can be used to generate all possible channelization codes that may have been used for the physical channel. Intermediate results representative of the partially processed symbols are stored and, upon determination of the actual channelization code, further processed in accordance with the actual and hypothesized channelization codes to provide the final results.

The present invention provides an improved receiver for data-rate detection in a signal received from a transmitter of a cellular radio communication system including multiple transport channels supporting variable data-rate transmissions. This is accomplished by a computationally efficient technique for data-rate detection. The improved receiver receives data and TFCI associated with each of the multiple transport channels. The receiver then obtains a maximum number of valid transport format combinations and a maximum number of TFCIs that can be formed. The receiver then computes a subset of TFCIs using the obtained maximum number of valid transport format combinations and the maximum number of TFCIs, and decodes from the computed subset of TFCIs within the frame to reduce computation during decoding and to improve data-rate detection reliability.

Disclosed is a method for determining transmission power of a second TFCI bit indicating transport format information of data on a downlink shared channel transmitted from a selected Node B to a UE in a mobile communication system including the UE existing in a handover zone and a plurality of Node Bs in an active set of the UE. The Node Bs transmit dedicated channel data including a first TFCI bit to the UE over dedicated channels. A first Node B transmits dedicated channel data over a dedicated channel and transmits downlink shared channel data over the downlink shared channel. The first Node B determines a transmission power level of the second TFCI bit to be higher than a ratio of transmission power of the dedicated channel data from a Node B transmitting only the dedicated channel data to transmission power of the first TFCI bit.

A method and an apparatus for data transmission in a mobile telecommunication system supporting an enhanced uplink service are provided. A Transport Format Combination (TFC) selector determines TF information for data to be transmitted through a first data channel not supporting Hybrid Automatic Repeat reQuest (HARQ) and a second data channel supporting HARQ, and determines gain factors for the first and second data channel, and first and second control channel carrying control information for the first and second data channel. The gain factors are input to a physical channel transmission controller, and the physical channel transmission controller scales-down the gain factor for the second channel if total transmit power required for transmission of the channels exceeds the predetermined maximum allowed power. A gain scaler adjusts transmit powers of the channels using the scaled gain factor and gain factors for the first data channel, the first control channel and the second control channel.

A method, computer-readable medium and data processing system for replicating streaming content in a peer-to-peer network is provided. A first client of the peer-to-peer network receives streaming content encapsulated in one or more data blocks formatted according to a transport format of the peer-to-peer network. The first client extracts the streaming content from the one or more data blocks and assembles the streaming content into a native format of the streaming content. The streaming content is stored in the native format. The first client conveys at least a portion of the streaming content in the native format to a second client external to the peer-to-peer network.

A method of downlink packet switching for use in a mobile telecommunications network having a plurality of base stations capable of communicating in corresponding uplink and downlink with a plurality of mobile terminals operating in a frequency division duplex (FDD) mode, wherein a downlink shared channel (DSCH) is used to carry user data and control information for the mobile terminals in a coverage area, the method comprising the steps of providing a common packet channel (CPCH) to serve as a reverse link transport of the downlink shared channel (DSCH) in a deterministic way; and providing for carrying a downlink dedicated physical control channel (DL-DPCCH) to provide physical transport format (TFCI) for the downlink shared channel and physical control for the uplink CPCH.

A system and method that transmits multimedia content over a long distance through network for prompt display of the transmitted multimedia content, wherein multimedia content are encoded into streaming format data files that enables smooth transmission and continuous display of multimedia content, said streaming format reflects inherent temporal characteristic of multimedia content, said streaming data files are arranged in a way that allows access and retrieval through hypertext transfer protocol, or HTTP, and the transmission of multimedia content is regulated in a way that adapts to the inherent characteristics and / or real-time traffic condition of the network or display progress.

A method of allocating transmission resources at a Media Access Control (MAC) entity of a node of a Universal Mobile Telecommunications System (UMTS). The method comprises, for each frame of an output data flow, computing for each input flow to the MAC entity a fair share of the available output bandwidth of the MAC entity. A Transport Format Combination (TFC) is then identified from a TFC Set (TFCS) on the basis of the bandwidth shares computed for the flows, where the TFC comprises a Transport Format allocated to each input flow. For each input flow, if the allocated TF results in a data transmission rate which is less than the determined fair distribution, the difference is added to a backlog counter for the input flow. The value of the backlog counters is taken into account when selecting a TFC for the subsequent frame of the output data flow.

The present invention relates to methods in a communication system providing the steps of determining a set of spatial transport formats, and signalling a selected active set of transport formats to one or several mobile terminals. The transport formats are adjustable by means of adapting the parameters of their complex transmission weights and / or their transmission power by evaluating collected channel management information, e.g. feedback information received from the mobile terminals, in order to optimise the aggregate data throughput subject to quality and fairness requirements. Further the present invention allows to evaluate a plurality of feedback information received from the various mobile terminals, determining applicable data rates for each of the data streams associated to the transport formats, determining from said evaluation a scheduling scheme for scheduling data streams to said mobile terminals, and assigning applicable data rates to each of said scheduled data streams.

Disclosed is a method for selecting transport formats corresponding to transport channels in a wideband code division multiple access mobile communication system. The method includes the steps of sorting a logical channels according to priorities, the logical channels existing between a radio link control layer entity and a medium access control layer entity; sorting transport format indicators indicating the transport formats according to a number of transport blocks for each corresponding transport format; and according to a sequence of the sorted transport format indicators, selecting transport formats supporting transport blocks of a transport format indicator, a number of which is less than or equal to a number of data blocks to be transferred through a logical channel according to each priority; and comparing size of the data blocks to be transferred with sizes of transport blocks of a selected transport format indicator and selecting a transport format indicator having sizes of a transport block identical to sizes of the data blocks to be transferred.

An uplink scheduling system and method in a wireless broadband internet communication system includes calculating priorities of mobile stations (MSs) taking into account headroom size indicating transmission power additionally available for each of the MSs; and determining a transmission format of an MS selected to be preferentially allocated a slot as a result of the priority calculation, taking into account headroom size reported by the selected MS and a margin determined depending on a variation in channel state between the selected MS and a base station (BS).

The embodiment of the invention provides a video live broadcasting method and system, a transcoding server and a webpage client. The video live broadcasting method comprises the steps of receiving original video stream data sent by a video stream distribution server, wherein the format of the original video stream data is a preset original format; converting the format of the original video stream data into a preset stream transmission format so as to obtain video stream data in the stream transmission format; and sending the video stream data in the stream transmission format to the webpage client which requests for a live video through a CDN (Content Distribution Network) node so as to enable the webpage client to analyze the video stream data in the stream transmission format and play the analyzed video stream data in a frame playing mode based on the stream transmission format after the video stream data in the stream transmission format are received. According to the video live broadcasting method provided by the embodiment of the invention, delay of playing the live video on a webpage can be reduced.

Each transport format contains control parameters according to which data are mapped from at least one logical channel onto at least one transport channel by a data link layer protocol unit, with the control parameters in the transport formats containing information regarding that or those data link layer protocol buffer storages and / or that or those data link layer data streams from which the data to be transmitted need to be transmitted in a data transmission time interval.