摘要:
The present invention discloses a transmission method with multi-carrier aggregation, which includes: performing uplink and downlink configurations for each of the component carriers aggregated in a cell and ensuring coexistence of at least one identical uplink sub-frame and at least one identical downlink sub-frame between at least two of the component carriers and compliance of the configuration of at least one of the component carriers with an uplink and downlink configuration of R8; and transmitting the uplink and downlink configuration of any one of the component carriers and those of the other component carriers aggregated with the any one component carrier to an LTE-A UE accessing the corresponding component carrier. The invention further provides a transmission device with multi-carrier aggregation. With the invention, uplink and downlink configurations in an LTE-A system can be performed to accommodate a demand of a TDD system.
摘要:
The present invention discloses a transmission method with multi-carrier aggregation, which includes: performing uplink and downlink configurations for each of the component carriers aggregated in a cell and ensuring coexistence of at least one identical uplink sub-frame and at least one identical downlink sub-frame between at least two of the component carriers and compliance of the configuration of at least one of the component carriers with an uplink and downlink configuration of R8; and transmitting the uplink and downlink configuration of any one of the component carriers and those of the other component carriers aggregated with the any one component carrier to an LTE-A UE accessing the corresponding component carrier. The invention further provides a transmission device with multi-carrier aggregation. With the invention, uplink and downlink configurations in an LTE-A system can be performed to accommodate a demand of a TDD system.
摘要:
A method for data transmission in a TDD system is disclosed. The method includes: configuring, by a base station, a length respectively for a Downlink Pilot Slot (DwPTS) and an Uplink Pilot Slot (UpPTS) within a special field of a radio half-frame based on a current coverage area taking one Orthogonal Frequency Division Multiplexing (OFDM) symbol as a unit, and issuing a configured result to a user device, wherein a total length of the DwPTS, a Guard Period (GP) slot and the UpPTS is kept to be 1 ms; constructing, by the base station, radio half-frames for data transmission according to the configured result. An apparatus for data transmission in the TDD system is also disclosed. According to the present invention, coverage area of different levels with smaller granularity is supported, radio resources are saved and transmission efficiency is increased.
摘要:
A method for data transmission in a TDD system is disclosed. The method includes: configuring, by a base station, a length respectively for a Downlink Pilot Slot (DwPTS) and an Uplink Pilot Slot (UpPTS) within a special field of a radio half-frame based on a current coverage area taking one Orthogonal Frequency Division Multiplexing (OFDM) symbol as a unit, and issuing a configured result to a user device, wherein a total length of the DwPTS, a Guard Period (GP) slot and the UpPTS is kept to be 1 ms; constructing, by the base station, radio half-frames for data transmission according to the configured result. An apparatus for data transmission in the TDD system is also disclosed. According to the present invention, coverage area of different levels with smaller granularity is supported, radio resources are saved and transmission efficiency is increased.
摘要:
The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized.
摘要:
The present invention discloses a method, system and device for determining a bandwidth of an uplink sounding reference signal SRS. The method for determining the bandwidth of the uplink SRS comprises the following steps: determining whether SRS is transmitted with the uplink pilot time slot if the SRS is transmitted with the largest bandwidth level; transmitting SRS with the non-extensive SRS bandwidth if SRS is determined to be transmitted with the uplink pilot time slot and the UE reaches the power limit. In the present invention, the signal-to-noise ratio detected on the bandwidth with which SRS transmitted can be maintained, and the accurate detection of the channel information is thereby realized.
摘要:
An adaptive modulation and coding method is provided by the present invention, comprising: selecting punctured Physical Resource Blocks (PRBs) to transmit the downlink data for the User Equipment (UE); determining the Transport Block Size (TBS) and the number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling the downlink data for the UE based on the determined TBS, and transmitting the number of the used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting the number of the punctured PRB pairs to the number of normal PRB pairs, determining the modulation scheme and the TBS sequence number based on the MCS sequence number, and determining the TBS of the downlink data based on the number of the normal PRB pairs and the TBS sequence number. The specific condition when downlink data are transmitted with punctured PRBs may be performed in the present invention on the basis of utilizing the existing resources and adaptive processing of the general subframes by performing conversion between the number of punctured PRBs and the number of normal PRBs in scheduling resource for the UE with the NodeB, which may be implemented simply and efficiently.
摘要:
The present invention provides a method for configuring a Sounding Reference Signal (SRS). The method includes: determining, by a base station, an SRS periodicity available for a cell, and determining at least one SRS configuration position available in a sub-frame for the cell based on the SRS periodicity determined; and jointly coding, by the base station, the SRS periodicity and the at least one SRS configuration position, and transmitting a result of the joint coding to all User Equipments (UE) in the cell through broadcast signaling. The present invention also provides an apparatus for configuring an SRS. The present invention implements configuration of SRS transmission and can avoid conflict between SRS and uplink control information.
摘要:
An adaptive modulation and coding method is provided by the present invention, comprising: selecting punctured Physical Resource Blocks (PRBs) to transmit the downlink data for the User Equipment (UE); determining the Transport Block Size (TBS) and the number of punctured PRB pairs for transmission to the UE based on the carried service; scheduling the downlink data for the UE based on the determined TBS, and transmitting the number of the used punctured PRB pairs and a Modulation and Coding Scheme (MCS) sequence number to the UE; and the UE converting the number of the punctured PRB pairs to the number of normal PRB pairs, determining the modulation scheme and the TBS sequence number based on the MCS sequence number, and determining the TBS of the downlink data based on the number of the normal PRB pairs and the TBS sequence number. The specific condition when downlink data are transmitted with punctured PRBs may be performed in the present invention on the basis of utilizing the existing resources and adaptive processing of the general subframes by performing conversion between the number of punctured PRBs and the number of normal PRBs in scheduling resource for the UE with the NodeB, which may be implemented simply and efficiently.
摘要:
A method for determining uplink transmission power in time division duplex system is disclosed: a base station determines the current distribution manner of uplink and downlink sub-frames, acquires the frame correspondence information that corresponds to the distribution manner of said uplink and downlink sub-frames, selects, based on said frame correspondence information, downlink sub-frames to transmit to a terminal the power control (TPC) commands that correspond to the uplink sub-frames. Before using the uplink sub-frames to transmit data, the terminal determines the current distribution manner of uplink and downlink sub-frames, acquires the frame correspondence information that corresponds to the distribution manner of said uplink and downlink sub-frames, determines, based on the frame correspondence information, the downlink sub-frames that are used for transmitting the TPC commands; acquires the TPC commands received by the downlink sub-frames, and determines the data transmission power of the uplink sub-frames based on said TPC commands. The present invention also discloses a time division duplex data transmission system and an apparatus therefor. With the present invention, a time division duplex system can transmit and receive TPC commands based on the frame correspondence information, thereby enabling correct and effective uplink power control performance.