摘要:
A method and apparatus for scheduling data transmission in a mobile communication system supporting a packet data service without increasing downlink signaling overhead uses a receiver adapted to receive an absolute grant indicating an absolute value of an allowed maximum grant for data transmission. From a node B a relative grant indicating a change in the allowed maximum grant for data transmission is received. A controller determines whether the AG is received with a pre-assigned first identifier of a user equipment and the allowed maximum grant according to the absolute grant is updated and also the allowed maximum grant according to the relative grant is updated at the future transmission time interval when the absolute grant is received with the first identifier.
摘要:
A method and apparatus for scheduling data transmission in a mobile communication system supporting a packet data service without increasing downlink signaling overhead uses a receiver adapted to receive an absolute grant indicating an absolute value of an allowed maximum grant for data transmission. From a node B a relative grant indicating a change in the allowed maximum grant for data transmission is received. A controller determines whether the AG is received with a pre-assigned first identifier of a user equipment and the allowed maximum grant according to the absolute grant is updated and also the allowed maximum grant according to the relative grant is updated at the future transmission time interval when the absolute grant is received with the first identifier.
摘要:
A method and apparatus for transmitting control information of a small block size with high reliability in a mobile communication system supporting uplink packet data service are provided. A 6-bit Absolute Grant indicating an allowed maximum data rate for uplink packet data transmission is generated and a 16-bit User Equipment Identifier Cyclic Redundancy Check is generated by combining a Cyclic Redundancy Check with a User Equipment Identifier. The User Equipment Identifier specific Cyclic Redundancy Check and 8 tail bits are added to the 6-bit Absolute Grant and the added bits are encoded at a coding rate of 1/3. The resulting 90 coded bits are rate-matched according to a predetermined rate matching pattern and transmitted to a User Equipment. The rate matching pattern is {1,2,5,6,7,11,12,14,15,17,23,24,31,37,44,47,61, 63, 64, 71, 72, 75, 77, 80, 83, 84, 85, 87, 88, 90}.
摘要:
A mobile communication system using an enhanced uplink dedicated transport channel transmits data at a relatively low effective data rate through autonomous transmission. Data transmission time points for user equipments (UEs) have different values in the autonomous transmission and therefore uplink interference is reduced. An autonomous transmission period N and the number of autonomous transmissions k are determined such that each UE performs the autonomous transmission. A Node B and each UE are notified of possible autonomous transmission time points based on the determined autonomous transmission period N and the determined number of autonomous transmissions k through signaling. The UE transmits the uplink data without the Node B's scheduling at the possible autonomous transmission time points.
摘要:
A method and apparatus for transmitting a happy bit indicating whether a UE needs additional resources for uplink data transmission in a mobile communication system supporting an uplink packet data service are provided. The UE sets a happy bit for a current process based on a different criterion, depending on the current process is an active process activated for scheduled transmission or an inactive process allowed for non-scheduled transmission. A Node B interprets happy bits received for a plurality of processes and interprets them according to the types of the processes. Then the Node B determines an allowed maximum data rate and the number of active processes for the UE and schedules uplink data transmission for the UE according to the determination result.
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 scheduling uplink data transmission for a UE in a mobile communication system supporting an uplink packet data service are provided. A serving Node B and at least one non-serving Node B are included in an active set of a UE located in a soft handover region. The UE receives a dedicated scheduling grant from the serving Node B by dedicated scheduling and a common scheduling grant from the at least one non-serving Node B, controls an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the common scheduling grant indicates a rate-down, and transmits uplink data at the controlled uplink data rate.
摘要:
A method and an apparatus for reporting a buffer status of a buffer storing packet data to be transmitted by a user equipment for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service are disclosed. A user equipment stores packet data having a priority corresponding to a plurality of priority queues having inherent priorities and relating to at least one service, and transmits buffer status information containing queue identifiers of the priority queues and buffer payload information representing an amount of the packet data stored in the priority queues. Herein, the user equipment inserts the buffer status information into a header part of a protocol data unit for the uplink packet data service, inserts the packet data into a payload part of the protocol data unit, and then transmits the protocol data unit.
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 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.
摘要:
A method and an apparatus for reporting a buffer status of a buffer storing packet data to be transmitted by a user equipment for a scheduling assignment of an uplink packet data service in a mobile communication system supporting the uplink packet data service are disclosed. A user equipment stores packet data having a priority corresponding to a plurality of priority queues having inherent priorities and relating to at least one service, and transmits buffer status information containing queue identifiers of the priority queues and buffer payload information representing an amount of the packet data stored in the priority queues. Herein, the user equipment inserts the buffer status information into a header part of a protocol data unit for the uplink packet data service, inserts the packet data into a payload part of the protocol data unit, and then transmits the protocol data unit.