摘要:
The present invention relates to a system for gating a dedicated physical control channel in a mobile communication system. A UTRAN (UMTS Terrestrial Radio Access Network) transmits a gating start command or a gating end command to a UE (User Equipment) through a specific transport format combination indicator symbol according to whether there exists data transmitted over a downlink physical shared channel and a dedicated physical data channel, thereby to start or end gating the dedicated physical control channel.
摘要:
A common packet channel assignment method and device in a CDMA (Code Division Multiple Access) communication system is disclosed. The method comprises transmitting an access preamble signal having channel information which is used to access a base station, and then receiving an; access preamble acquisition indicator signal from the base station in response to the access preamble signal. A collision detection preamble for detecting a collision is transmitted in response to the received access preamble acquisition indicator signal. A first signal indicating acquisition of the collision detection preamble and a second signal indicating channel assignment are received, both of which the base station has transmitted in response to the collision acquisition signal. Upon receipt of the first signal, a common packet channel is assigned according to information designated by the second signal.
摘要:
Disclosed is a channel allocation method in a CDMA communication system. The method comprises receiving from a UTRAN one SF node CSF,k out of 2m−1 SF nodes (where m is an integer larger than 3) arranged in the form of a tree having a mother node and child nodes; searching a group including the received SF node CSF,k in accordance with Formula (1) below; spreading a signal on a dedicated physical data channel (DPDCH) with an OVSF code corresponding to a selected one of the received SF node and its child nodes in the searched group; and spreading a signal on a dedicated physical control channel (DPCCH) with an OVSF code corresponding to an SF node determined by Formula (2) below based on the received SF node. For SF ≤ 2 m - 1 4 , ( P 1 · SF , P 1 · k ) = ( 2 m - 1 4 , n ) For SF > 2 m - 1 4 , ( P 2 · 2 m - 1 4 , P 2 · n ) = ( SF , k ) where , P 1 = 2 m - 1 4 · SF and P 2 = 4 · SF 2 m - 1 . Formula (1) F ( C 2 m - 1 4 · k ) = C 2 m - 1 2 m - 1 - k - 1 ( k = 0 , 1 , … ) F ( C 2 m - 1 4 · k ) = C 2 m - 1 , 2 m - 1 - ( k - 32 ) ( k = 0 , 1 , … ) . Formula (2)
摘要:
An apparatus randomly assigns downlink sub-frame time slots for transmitting user data in an NB-TDD CDMA (Code Division Multiple Access) communication system. In the apparatus, a multiplexer creates a user data part by multiplexing user data for UEs (User Equipments), a TFCI (Transport Format Combination Indicator) symbol for the user data, and a TPC (Transmission Power Control command) symbol for controlling transmission power of a downlink channel, and a controller randomly assigns time slots for transmitting the user data part in the sub-frames, based on a time slot number initially assigned for the user data part, a sub-frame number at a transmission point of the user data part, and the number of assigned uplink time slots in the corresponding sub-frame.
摘要:
A signaling method between a MAC (Medium Access Control) layer entity of a transmission apparatus and a MAC layer entity of a reception apparatus in a packet communication system including the transmission apparatus and the reception apparatus wherein upon receiving a signaling request, the MAC layer entity of the transmission apparatus transmits a MAC signaling message including control information and a signaling indication indicating transmission of the control information and the MAC layer entity of the reception apparatus determines whether the MAC signaling message includes the signaling indication, and receives the control information included in the MAC signaling message, if the MAC signaling message includes the signaling indication.
摘要:
Disclosed is an apparatus for encoding TFCI bits in an asynchronous CDMA mobile communication system including a UE and a Node B for transmitting packet data to the UE. A TFCI bit generator creates the TFCI bits, the number of which is variable depending on an information bit ratio of the first channel to the second channel. A code length information generator generates code length information for setting a length of a codeword according to the information bit ratio. A Walsh code generator generates first to fifth basis Walsh codewords. A sequence generator generates an all-1 sequence. A mask generator generates first to fourth basis masks. First to tenth multipliers multiply the TFCI bits by the first to fifth basis Walsh codewords, the all-1 sequence and the first to fourth basis masks, respectively. An adder adds outputs of the first to tenth multipliers. A puncturer punctures a codeword output from the adder according to the code length information.
摘要:
A method for decoding received data in a decoder which receives data from an encoder varying a length of a Walsh code according to a coding rate of transmission data, and has maximum IFHT (Inverse Fast Hadamard Transform) stages capable of decoding even the data encoded by a Walsh code with a maximum length. The method comprises selecting at least one IFHT stage among the maximum IFHT stages according to a length of the Walsh code used for the received data; and performing inverse fast Hadamard transform on the received data by the selected IFHT stage.
摘要:
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.
摘要:
In a mobile communication system, if a UE enters a SHO (Soft Handover) region, the UE determines weight information for a DPCH and a PDSCH depending on DPCH signals and PDSCH signals received from Node Bs, and transmits the determined weight information to the Node Bs. The Node Bs then determine weights of the DPCH signals and the PDSCH signals to be transmitted to the UE depending on the feedback information received from the UE, and transmit the determined weights to the UE along with the DPCH signals and the PDSCH signals, respectively.
摘要:
A method of transmitting and receiving information about successive orthogonal codes assigned to user data for spreading on a control channel before transmission of the user data on a plurality of code channels in an HSDPA (High Speed Data Packet Access) communication system. A Node B determines an offset between a starting orthogonal code among the assigned orthogonal codes and the first of a plurality of successive orthogonal codes available to the HSDPA communication system, determines the number of the assigned orthogonal codes counted from the starting orthogonal code being the number of the code channels, forms orthogonal code information indicating the offset and the number of the orthogonal codes, and transmits the orthogonal code information to a UE.