139 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 C_SF,k out of 2^m−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 C_SF,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. $\begin{array}{cc}\mathrm{For}\mathrm{SF}\le \frac{2^{m-1}}{4},\left(P_1·\mathrm{SF},P_1·k\right)=\left(\frac{2^{m-1}}{4},n\right)\mathrm{For}\mathrm{SF}>\frac{2^{m-1}}{4},\left(P_2·\frac{2^{m-1}}{4},P_2·n\right)=\left(\mathrm{SF},k\right)\mathrm{where},P_1=\frac{2^{m-1}}{4·\mathrm{SF}}\mathrm{and}{P}_2=\frac{4·\mathrm{SF}}{2^{m-1}}.& \text{Formula (1)}\\ F\left(C_{\frac{2^{m-1}}{4}·k}\right)=C_{2^{m-1}{2}^{m-1}-k-1}(k=0,1,\dots )F\left(C_{\frac{2^{m-1}}{4}·k}\right)=C_{2^{m-1},2^{m-1}-\left(k-32\right)}(k=0,1,\dots ).& \text{Formula (2)}\end{array}$

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.

The invention discloses an upstream power control device and a method, relating to the power control technology of E-DCH channels in an HSPA+ system. The method of the invention is as follows: firstly, a terminal reads TPCs from a base station within a plurality of recent time slots, current transmission power of upstream channels and a modulation type of the E-DPDCH channel in the next TTI; secondly, a power control method is selected according to the modulation type of an E-DPDCH channel in the next TTI; thirdly, transmission power of an upstream channel applied in the next TTI is calculated according to the TPCS received within the plurality of recent time slots, the current transmission power and maximum transmission power of the upstream channels, minimum transmission power requirement, power control adjustment steplength and beta factor opposite to a DPCCH channel; fourthly, transmission power of all the upstream channels or a part of the upstream channels in TTIs of the whole E-DPDCH channel is kept to be constant. By adoption of the device and the method, crosstalk between I-path signals and Q-path signals is effectively reduced.

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 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 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.

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.

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).

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.

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.