摘要:
A method for configuring gain factors in a WCDMA telecommunication system is provided in which the gain factor for defining power required for normal reception of uplink data in an environment supporting an uplink service over an E-DCH can be configured using minimal signaling information. First gain factors for first TFs corresponding to a part of a TF set including a plurality of TFs available for an uplink service are received. One of the first TFs is determined as a reference TF for a second TF other than the first TFs in the TF set. Then, a second gain factor for the second TF is calculated using the first gain factor for the determined reference TF. The second gain factor is used for transmitting or receiving uplink data.
摘要:
A method and apparatus for controlling an uplink data rate, without increasing downlink signaling overhead, in a mobile communication system that supports an uplink packet data service. A Node B transmits an Absolute grants (AG) using one of first and second IDs to a User Equipment (UE). Upon receipt of an AG with the first UE-ID, the UE transmits uplink data within an allowed maximum data rate indicated by the AG and receives a Relative Rrant (RG) in the next Transmission Time Interval (TTI). Upon receipt of an AG with the second UE-ID, the UE does not receive an RG.
摘要:
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.
摘要:
A method includes (1) receiving with a user equipment (UE) information related to an allowed power for autonomous transmission on at least one logical channel mapped to an uplink channel, the uplink channel being set up with a base station and dedicated for packet data transmission, (2) determining, with the UE and in accordance with a scheduling grant received from the base station, an allowed power of scheduled transmission on the uplink channel, (3) determining a total data amount allowed to be transmitted, (4) determining a data amount for the autonomous transmission on the logical channel, the determined autonomous transmission data amount being not greater than an allowed autonomous transmission data amount corresponding to the allowed autonomous transmission power, and (5) determining a data amount for scheduled transmission on the logical channel, the determined scheduled transmission data amount being not greater than an allowed scheduled transmission data amount corresponding to the allowed scheduled transmission power.
摘要:
A method and apparatus for controlling an uplink data rate, without increasing downlink signaling overhead, in a mobile communication system that supports an uplink packet data service. A Node B transmits an Absolute grants (AG) using one of first and second IDs to a User Equipment (UE). Upon receipt of an AG with the first UE-ID, the UE transmits uplink data within an allowed maximum data rate indicated by the AG and receives a Relative Rrant (RG) in the next Transmission Time Interval (TTI). Upon receipt of an AG with the second UE-ID, the UE does not receive an RG.
摘要:
A method and apparatus are provided for scheduling uplink data transmission in a mobile communication system. The method and apparatus include a base station scheduler for efficiently allocating radio communication resources in a mobile communication system using an E-DCH or DCH. The method and apparatus further include a User Equipment (UE) for using both an E-DCH and a conventional DCH to efficiently select the data rate of the E-DCH and the data rate of the conventional DCH. The method and apparatus can maintain the total transmit power of the UE at the time of retransmission the same as the total transmit power of the UE at the time of initial transmission regardless of the existence or absence of the DCH, thereby minimizing the change in the quantity of interference generated in the uplink by the UE.
摘要:
The present invention supposes a situation in which an Enhanced Uplink Dedicated transport Channel (EUDCH) is used in a mobile communication system. The present invention proposes a method for increasing the maximum possible number of code channels for E-DPDCH by dynamically allocating OVSF codes allocated to DPDCH and HS-DPCCH supporting a high-speed downlink packet service, to a E-DPDCH every TTI. Therefore, a Node B can normally demodulate E-DPDCH/DPDCH/HS-DPCCH data, increasing a EUDCH data rate.
摘要:
A method and apparatus for transmitting a pilot signal in a wireless communication system. A reference cell scrambling code or one of a plurality of additional cell scrambling codes is selected for each combination of one of a plurality of first scrambling codes (PSCs) applied to a first synchronization channel (P-SCH) and one of a plurality of second scrambling codes (SSCs) applied to a second synchronization channel (S-SCH). It is determined whether to transmit the pilot signal using the reference cell scrambling code or one of the plurality of additional cell scrambling codes. The reference cell scrambling code or the additional cell scrambling code is generated according to the determination. The pilot signal is transmitted using the generated reference cell scrambling code or the additional cell scrambling code.
摘要:
Provided is a method and apparatus for transmitting a synchronization signal for cell search in an Orthogonal Frequency Division Multiplexing (OFDM) communications system. The method includes acquiring Primary Synchronization CHannel (P-SCH) sequence and Secondary Synchronization CHannel (S-SCH) sequence; mapping the P-SCH sequence and the S-SCH sequence onto subcarriers; generating OFDM symbols including the P-SCH sequence and the S-SCH sequence mapped onto subcarriers; and transmitting the OFDM symbols, wherein a frame comprising a plurality of OFDM symbols, a part of the plurality of OFDM symbols in the frame is used for transmitting Synchronization CHannel (SCH) comprising P-SCH and S-SCH, and wherein the P-SCH and the S-SCH are mapped to adjacent OFDM symbols and the S-SCH is mapped to subcarriers with a predetermined interval in a frequency domain within an OFDM symbol.
摘要:
A method and apparatus are provided for transmitting control information in a base station for a wireless communication system. The method includes transmitting, to a terminal, information associated with a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols carrying control channels; determining a set of control channel candidates based on an IDentifier (ID) of the terminal; selecting at least one control channel candidate from among the set of control channel candidates; and transmitting the control information to the terminal through the selected at least one control channel candidate. Each control channel candidate included in the set of control channel candidates consists of one, two, four, or eight control channel elements (CCEs) existing in the OFDM symbols.