141 results about "DPDCH" patented technology

In a UMTS wireless communication system, when the packet size on the enhanced dedicated physical data channel (E-DPDCH) on the uplink from a UE to a NodeB reaches a converged default packet size, the corresponding dedicated physical control channel (E-DPCCH) is turned off. The NodeB uses the default packet size to decode the frame received on the E-DPDCH using each possible redundancy version. Alternatively, the E-DPCCH is turned off and a new transmission flag is transmitted by the UE only when a new frame is transmitted by the UE. NodeB then uses the presence or absence of that flag in conjunction with the absence of E-DPCCH to determine which redundancy version is to be assumed in decoding the frame received on E-DPDCH.

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≤2m-14,(P1·SF,P1·k)=(2m-14,n)⁢⁢For⁢ ⁢SF>2m-14,(P2·2m-14,P2·n)=(SF,k)⁢⁢where,P1=2m-14·SF⁢ ⁢and⁢ ⁢P2=4·SF2m-1.Formula (1)F⁡(C2m-14·k)=C2m-1⁢2m-1-k-1⁢ ⁢(k=0,1,…⁢ )⁢⁢F⁡(C2m-14·k)=C2m-1,2m-1-(k-32)⁢ ⁢(k=0,1,…⁢ ).Formula  (2)

In a method for improving signal extraction in a code division multiple access (CDMA) telecommunications system, a first iteration of interference cancellation is performed on the basis of bit rates for every signal which are the same as those in a previous frame of the same signal. Filtered and down-converted signals are demodulated in Rake receivers to provide output signals corresponding to decision variables and channel estimates. The decision variables are limited and remodulated and respread prior to the signals being reconstructed using the channel estimates. The reconstructed signals are summed, and each signal is subtracted from the sum to provide an ‘interference’ signal which is then used to obtain the individual signals. Each signal is then demodulated a second time in another Rake receiver to provide a tentative DPDCH signal, a TFI signal, a TPC signal and a SNI signal. The TFI signal is processed to provide a signal indicative of the bit rate which is used to both decode the DPDCH signal providing a data output and to provide an estimate of the bit rate for a subsequent frame of the same signal.

A method for estimating and compensating of frequency deviation (FD) of random access channel includes carrying out preset FD compensation and correlation integration as well as non-correlation integration on leading part of random access channel to confirm a pre-selected multi-path, carrying out FD pre-compensation and correlation as well as non-correlation integration on DPCCH at pre-selected multi-path, canceling multi-path with integration valve being less than threshold, using residual FD estimation value to carry out residual FD compensation on DPPCH and FD pre-estimation value and residual FD estimation value to carry out FD compensation on DPDCH.

The present invention relates to a method for estimating a propagation channel in the presence of transmit beam-forming within a receiver, accounting for the structure of two logical channels referred as to a common channel and a dedicated physical channel (CPICH, DPCH) and based on a common structure of corresponding propagation channels, said DPCH channel comprising two sub-channels (DPDCH, DPCCH), said propagation channels being modeled as a linear superposition of a finite number of discrete multipath components following an uncorrelated-scattering wide-sense stationary model, a multipath component being characterized by a time-varying multipath complex coefficient and a delay. Use: RAKE Receiver.

A transmission rate control method includes: measuring, at a radio base station, a reception power of a DPCH transmitted from the mobile station; extracting, at the radio base station, a transmission data block size of the uplink user data from an E-DPCCH; acquiring, at the radio base station, a transmission power ratio of an E-DPDCH to the DPCCH which corresponds to the extracted transmission data block size; calculating, at the radio base station, a reception power of the E-DPDCH based on the measured reception power and the acquired transmission power ratio; calculating, at the radio base station, a relative transmission rate of the uplink user data based on the calculated reception power; notifying, at the radio base station, the relative transmission rate to the mobile station via a E-RGCH; and controlling, at the mobile station, the transmission rate based on the notified relative transmission rate.

Disclosed is a method and an apparatus for controlling transmission electric power capable of minimizing a decrease in the amount of maximum transmission electric power without degrading an adjacent channel leakage power ratio when code-multiplexing additional control information with data and main control information. A mobile device checks values of gain factors βd and βc when performing code multiplexing to transmit signals from channels DPDCH to transmit data, DPCCH to transmit main control information, and HS-DPCCH to transmit additional control information. A maximum transmission electric power is decreased at a plurality of levels based on the check result and a ratio (Δhs) between the gain factors βc and βhs. It may be preferable to check the presence or absence of transmission data instead of the gain factor βd. In this case, when no transmission data is available, the maximum transmission electric power is decreased at a plurality of levels based on Δhs. When transmission data is available, the maximum transmission electric power is decreased at a plurality of levels based on the gain factor βc and Δhs.

A method of scaling soft symbols of an uplink E-DCH is provided, where the E-DCH is received from a user in a network for processing in a base station receiver in the network employing a log-MAP turbo decoding algorithm to process the E-DCH. The E-DCH includes an E-DPDCH from which the soft symbols are generated at the base station receiver, and an E-DPCCH used to transmit control information associated with the E-DPDCH, which along with configuration information from a radio network controller (RNC) of the network enables the base station receiver to determine a reference amplitude ratio linked to the actual power offset of the E-DPDCH from the legacy DPCCH. In the method, an estimated E-DPDCH to DPCCH amplitude ratio that represents a scaling factor for the soft symbols is determined, and the soft symbols are scaled by the scaling factor to enable the soft symbols to be processed by the log-MAP turbo decoding algorithm in the base station receiver.

Disclosed is a method and system thereof for transmitting a Voice over Internet Protocol (VoIP) packet over a primary channel and a supplemental channel belonging to a shared pool of supplemental channels in a wireless communications network such that Orthogonal Variable Spreading Factor (OVSF) codes associated with higher spreading factors (SF) may be used, thereby minimizing the adverse effects on system resources associated with implementing VoIP over downlink Dedicated CHannels (DCH). In the method and system, if an entire VoIP packet cannot be transmitted over a single transmission time interval on a primary channel, a specific supplemental channel (or code associated therewith) is assigned to a User Equipment (UE) to which the VoIP packet is intended. A portion of the VoIP packet is transmitted to the UE over a Dedicated Physical Data CHannel (DPDCH) on the primary channel, and another portion of the VoIP packet is transmitted to the UE over a DPDCH on the supplemental channel. The assigned specific OVSF code (or supplemental channel associated therewith) belongs to a set of supplemental OVSF codes assigned to the UE, and the set of assigned supplemental OVSF codes belongs to a shared pool of supplemental OVSF codes reserved at Node B. The identity of the assigned specific supplemental OVSF code used for the supplemental channel is indicated to the UE over a Dedicated Physical Control CHannel (DPCCH) on the primary channel. The UE examines the DPCCH on the primary channel to determine whether a specific supplemental channel (or code associated therewith) has been assigned to it. If a specific supplemental channel was assigned, then the UE will decode the data on the assigned specific supplemental channel along with the data on its primary channel. Otherwise, the UE will only decode the data on its primary channel.

In a mobile communication system, useless allocation of wireless resources is avoided and utilization efficiency of wireless resources is improved. A base station operating section of a base station is provided with respective functions for: measuring an RTWP which is a total receiving power; reading a format of a transport block transmitted by E-DPDCH; and measuring a transfer rate of each mobile station. In addition, a buffer size calculation section of the base station calculates an estimated buffer size at the time of transmission by a mobile station using an allocated power resource. An allocated power resource section calculates a power resource to be allocated to each mobile station, and notifies a power resource to be allocated to a mobile station via the base station operating section.

A transmission rate control method for controlling, at a mobile station, a transmission rate of uplink user data, in a radio communication system capable of controlling a transmission rate of uplink user data based on an absolute transmission rate transmitted via an E-AGCH and a relative transmission rate transmitted via a E-RGCH, includes: notifying, from a radio network controller to the mobile station, information for identifying the E-AGCH to be transmitted from a serving cell, and not notifying, from the radio network controller to the mobile station, information for identifying the E-RGCH, when the mobile station establishes an E-DPDCH; and controlling, at the mobile station, the transmission rate of uplink user data, based on the absolute transmission rate which is received from the serving cell via the E-AGCH, without considering the relative transmission rate.

The invention is used for improving the utilization rate of radio resources when UE independently sends SI. In the invention, when UE only needs to send SI to Node B, it transmits a part of SI content through 'RSN' and / or 'Happy' bit field on E-DPCCH, and meantime, uses a specific value of E-TFCI bit field to flag the 'RSN' and / or 'Happy' bit field in order to indicate that a part of SI content is transmitted and to indicate that what transmitted on the E-DPDCH is the rest of SI content.

The related control method for business authorized parameter on E-DCH comprises: if Serving_Grant=Zero_Grant in current TTI, receiving RG command 'DOWN' from E-DCH non-business RL, setting Maximum_Serving_Grant as the value at least lower one-class relative to value in scheduling table of reference_ETPR, and setting Non_Serving_RG_Timer to limit value of Serving_Grant not beyond the Maximum_Serving_Grant in pre-set time, wherein the reference_ETPR is the power ratio of E-DPDCH and DPCCH of TTI in one HARQ process.

In a transmission power control method, a receiver receives user data transmitted intermittently from a transmitter to a receiver and control data transmitted continuously from the transmitter to a plurality of receivers including the receiver via a DPDCH and a CPICH, respectively; and generates, when the receiver is receiving the user data from the transmitter via the DPDCH, a command for controlling transmission power of the transmitter of a DPDCH in a manner that an SIR of a received signal of the DPDCH by the receiver becomes equal to a target SIR, and generates, when the receiver is not receiving the user data from the transmitter via the DPDCH, a command for controlling the transmission power of the transmitter of the DPDCH by updating the target SIR by using received quality of the CPICH.

The method for coding channel is for dedicated physical data channel (DPDCH) of 12.2 kbps up run dedicated physical data channel particularly. Under condition of raising factor of spread spectrum and lowering complexity of encoder and decoder, capability of detecting DPDCH and dedicated physical control channel (DPCCH) of multiple users' receiving set is kept and improved slightly.

The operation method for upward exterior ring power control in E-DCH comprises steps: using Node B to detect upward receiving quality and report to RNC; the RNC arranges the target signal-noise rate for exterior ring power control according to received quality and sends the said rate to Node B, arranges an added E-DPDCH / DPCCH power off-set value according to QoS and upward received quality of E-DCH and DCH and sends the said off-set value to UE; the RNC determines the emission power for upward E-DPDCH and sends E-DCH data according to power off-set in Rel99 and added power off-set value. This invention can compensate the difference between E-DCH and SIR target of DCH, decreases upward disturbance, and makes RNC control the physical layer transmission number for E-DCH data.

The invention discloses a method for transmitting control information of enhanced uplink special channels, a device and a system. The method comprises the following steps that: modulation mode information is borne in an E-DPCCH data frame and sent; after a receiving party receives the data frame, the modulation mode information determines the modulation mode of the E-DPCCH; the modulation mode information is used to demodulate the data information borne by the E-DPCCH. The embodiment of the invention can also bear RSN information or E-DCH RV information used to indicate constellation version index information into the E-DPCCH data frame and send the E-DPCCH data frame; the receiving party uses the RSN information or the E-DCH RV information to determine the constellation version index information, and uses the constellation version index information to demodulate the data information borne by the E-DPDCH. The embodiment of the invention transfers the 160AM modulation mode information and the constellation version index information to the receiving party under the condition of not increasing the complexity of the hardware and not changing the definition of the prior RSN.

The invention discloses a framing and transmitting method for a 3G-based CEO satellite communication system. The method is characterized by comprising the following steps of: forming information of a UL-DPDCH by using a data field of a selected length, and forming information of a UL-DPCCH by using a pilot field of 3bit to 8bit, a transmission format combination indicating field of 2bit and a transmitting power control field of 1bit to 2bit; forming information of an information part of an uplink PRACH by using a data part consisting of the data field of the selected length and a feedback information field of 0bit to 2bit and a control part consisting of the pilot field of 8bit and the transmission format combination indicating field of 2bit; forming information of a DL-DPDCH by using a data field of a selected length, and forming information of a DL-DPCCH by using a transmitting power control field of 2bit to 16bit and a transmission format combination indicating field of 4bit; and forming information of an S-CCPCH in a DL-CPCH by using the transmission format combination indicating field of 4bit and the data field of the selected length.

An embodiment of the invention discloses a signal receiving method, a receiver, a signal combining method and a module thereof. The signal combing method comprises the following procedures: calculating the weight of each path; executing signal combination according to the weight of each path and the signal after DPDCH descrambling and dispreading; and outputting the combination result. The embodiment of the invention increases the performance of receiver in service with a plurality of paths and high speed through improving the combination method of the combination module.

A method and system for configuring a CDMA telecommunication system having at least one sending entity and at least one receiving entity, each entity configured to transmit data on at least one physical channel (DPDCH) via a transport channel composite (CCTrCH) of multiple transport channels. At least one entity includes a data processing module configured to determine for each transport channel a first parameter (RMi) proportional to a rate matching ratio (RFi) and a second parameter representing a maximum physical bit rate (Ndata) and to transform for each of the transport channels a number of symbols before rate matching (Nk) into a number of symbols after rate matching (Nk+ΔNk), where the number of symbols after rate matching (Nk+ΔNk) is obtained approximately by multiplying the number of symbols before rate matching (Nk) by the rate matching ratio (RFi).

The mobile communication terminal of the present invention includes: an amplitude adjuster 3, which adjusts the amplitude of signals of DPDCH, DPCCH, and HS-DPCCH; a transmission power controller 17, which controls the power allocation ratio for adjusting the transmission power of each transmission channel; And a priority channel selector 18, which selects a priority channel from among the transmission channels. If the total transmission power of each transmission channel will exceed the maximum transmission power, the transmission power controller 17 adjusts the transmission power of the priority transmission channel to the power level required by the base station on the one hand, and adjusts the transmission power of the non-priority channel to the power level required by the base station on the other hand. The power allocation ratio among the respective transmission channels is determined by limiting the total transmission power to the maximum transmission power. Accordingly, even if the transmission power required by the base station exceeds the maximum transmission power of the mobile communication terminal, the base station can correctly receive information.

Disclosed is a method of transmitting emergency stop control information on a common packet channel (CPCH) in a mobile communication system, which can perform an emergency stop within a less period of time when the user equipment is in a state of transmitting a packet through the CPCH by rapidly transmitting he emergency stop control information. The method of transmitting emergency stop control information on a CPCH is a radio mobile communication system comprises a first step of inserting and transmitting a predetermined bit pattern to a downlink (DL) dedicated physical channel (DPCH) by a universal mobile terrestrial radio access network (UTRAN), a second step of recognizing the particular bit pattern by the UE, and a third step of controlling data transmission through an uplink (UL) CPCH by the UE. Thus, the method according to the invention has an effect of more rapidly transmitting urgent control information through the DL DPCCH or the DPDCH, which are related to the CPCH, or through both of these two channels when the UE is transmitting a packet through the CPCH currently allocated to the UE.

A set of power control step size increments are determined such that at least two step size increments differ from one another. The set is sent to a Mobile Station MS. A first power command to the MS informs of a first power for a uplink data transmission on a radio resource (E-DPDCH). To change power on the same radio resource, an offset is computed, the set of step size increments is accessed to determine which one, or combination of them, yield the offset, and the MS is informed of the second power by a second message that identifies those elements of the set that alone or in combination yield the offset. The MS determines the second power as a function of the first power and the step size increment(s) from the second message.

A method, system and device for distributing resources of a base station node (Node B) are disclosed to enable F-DPCH resources of a local cell to be sufficiently used. In this invention, Node B reports to the RNC the F-DPCH capability of the local cell so as to provide a decision-making basis about using or not using the F-DPCH to the RNC. If the local cell supports F-DPCH, when the UE initiates an RRC connection establishment request, the RNC instructs the Node B to distribute the F-DPCH and HSDPA resources to the UE, otherwise the RNC instructs the Node B to distribute DPDCH and DPDCCH resources to the UE. The F-DPCH capability of the local cell can be reported in a newly added IE or extended existing IE of the Audit Response message and Resource Status Indication message.

The invention discloses a power control method, a power control system and related equipment. The power control method comprises the following steps: monitoring a data sending condition of a downlink of a DPDCH (Dedicated Physical Data Channel); if no data is sent by the downlink of the DPDCH, confirming reduction of the transmission power of the downlink of the DPDCH; or if data is sent by the downlink of the DPDCH, confirming increase or maintenance of the transmission power of the downlink of the DPDCH. Under the condition of ensuring the property of a system, the transmission power of the downlink of the DPDCH is reduced and the other user experiences are increased according to the power control method provided by the invention.

Techniques for transmit power control for multiple antenna transmissions in an uplink are disclosed. A wireless transmit / receive unit (WTRU) generates at least one input stream for transmission and applies a gain factor to each channel. The gain factor is determined based on a reference channel power estimate. The WTRU generates at least two data streams from the input stream for transmission via a plurality of antennas and applies weights to the data streams. The gain factor and / or the weights are controlled such that a transmit power on each antenna is within a maximum allowed value. The WTRU may perform power scaling on a condition that a transmit power on any antenna exceeds the maximum allowed value. The WTRU may scale down an enhanced dedicated channel (E-DCH) dedicated physical data channel (E-DPDCH) first before other channels.; For multiple E-DCH streams, the WTRU may calculate an E-DPDCH power offset based on an additional power offset factor due to multiple stream transmission.

In a mobile communication system, useless allocation of wireless resources is avoided and utilization efficiency of wireless resources is improved. A base station operating section of a base station is provided with respective functions for: measuring an RTWP which is a total receiving power; reading a format of a transport block transmitted by E-DPDCH; and measuring a transfer rate of each mobile station. In addition, a buffer size calculation section of the base station calculates an estimated buffer size at the time of transmission by a mobile station using an allocated power resource. An allocated power resource section calculates a power resource to be allocated to each mobile station, and notifies a power resource to be allocated to a mobile station via the base station operating section.

The embodiment of the invention discloses a method for detecting the power constraint of user equipment (UE). The method comprises the following steps: the measurement request message of PE-DPDCH is sent, wherein the measurement request message contains a request for measuring PE-DPDCH, a PE-DPDCH upper threshold and a first time, or / and PE-DPDCH lower threshold and a second time; a measurement report measured according to the measurement request message is received, when the measurement request message contains the upper threshold and the first time and when the time that the measurement report containing PE-DPDCH value is continuously above the upper threshold is more than the first time, first message is sent, or when the measurement request message contains the lower threshold and the second time, and when the time that the measurement report containing PE-DPDCH value is continuously above the upper threshold is more than the second time, second message is sent; and if the measurement report contains the first message, the power of UE is not constrained, and if the measurement report contains the second message, the power of UE is constrained. By adopting the embodiment of the invention, whether the power of UE is constrained can be accurately judged.