摘要:
A method for generating a Dedicated Reference Signal (DRS) is provided, which includes generating a Reference Signal (RS) sequence of each antenna port, spreading each RS sequence and obtaining an spread RS sequence, multiplying each spread RS sequence by a predefined scrambling code and obtaining a desired DRS sequence. An apparatus for generating a DRS is also provided. The problem of the imbalance of the power of OFDM symbols is cured, and DRS interference between different cells can be randomized.
摘要:
The method for transmitting an uplink SRS by an LTE UE comprising steps of: the UE receiving information N indicating SRS transmission; generating an SRS sequence by the UE; and the UE transmitting the SRS in two OFDM symbol in a half-frame or frame if the information N indicates that a period of SRS transmission is 2 ms. With present invention, a format of SRS in LTE FDD and LTE TDD will be the same. Meanwhile, a problem of supporting 2 ms period in the LTE TDD system is solved.
摘要:
An apparatus and a method for feeding back data receiving status, applied to a system, are provided. The method includes sequencing, by a User Equipment (UE), downlink subframes for transmitting data with respect to each Component Carrier (CC), generating receiving status feedback information for the first X downlink subframes with respect to each CC according to the result of the sequencing, where X≦M, wherein M is the number of downlink subframes on each CC, and transmitting the receiving status feedback information generated with respect to each CC to a base station. Accordingly, the UE will not misinterpret the receiving status for the downlink subframes due to inconsistencies with the base station between transmitting and receiving feedback. This affects the Hybrid Automatic Repeat Request (HARQ) transmission, saves the uplink overheads occupied by the receiving status feedback information, and increases the uplink coverage area.
摘要:
A computer-implemented system is provided for monitoring performance of a media player launched by a web browser. The media player is referenced by a document that defines a web page and is implemented as a plug-in to the web browser. Upon accessing the web page, the web browser launches the media player. The media player in turn launches a performance monitor that is implemented as a plug-in to the media player. The performance monitor subscribes to event listener objects exposed by the media player and receives event data that is reported by the event listener objects. Performance metrics pertaining to the media player are derived from the event data.
摘要:
A Multi-Input Multi-Output (MIMO) transmission based method for transmitting and receiving Downlink Control Information (DCI) is provided. The method includes if it is determined that two TBs are currently needed to be dispatched, indicating information of layer numbers and precoding matrixes of uplink MIMO transmission with a precoding information domain in DCI for dispatching the uplink MIMO transmission, and transmitting the DCI, and if it is determined that one Transport Block (TB) is currently needed to be dispatched, indicating the information of the layer numbers and precoding matrixes of the uplink MIMO transmission with redundant information in the DCI and precoding information domain, and transmitting the DCI. The present invention may save bit number of the precoding information domain and reduce the signaling overheads of the DCI.
摘要:
A method for feeding Acknowledgement/Negative Acknowledgement (ACK/NACK) information by a User Equipment (UE) in a wireless communication system includes: the UE configured to receive Physical Downlink Control Channel (PDCCH) information from a base station (BS). The UE also receives downlink data from the BS based on the PDCCH information. The UE generates an ACK/NACK feedback information corresponding to the downlink data. Thereafter, the UE determines a feedback status of the UE from among a plurality of feedback statuses according to a number of consecutive ACKs starting from a first data sub-frame in a binding window of the ACK/NACK feedback information. Further, the UE feeds back information on the determined feedback status to the BS.
摘要:
A method for enhancing Slow Associated Control CHannel (SACCH) performance, which includes steps of: if a user that uses a half-rate Traffic CHannel (TCH) is contained in a coupled user group, a base station instructing the user on an Adaptive Multi-user channels on One Slot VAMOS sub-channel to use a half-rate sub-channel 0 and a half-rate sub-channel 1 alternately; if a current 26-multiframe is an even frame in an SACCH cycle, the user on the VAMOS sub-channel delivering a TCH frame and an SACCH frame over the originally allocated half-rate sub-channel; if the current 26-multiframe is an odd frame in an SACCH cycle, the user on the VAMOS sending the TCH frame and the SACCH frame after exchanging his/her own half-rate sub-channels; and a reception side performing demodulation and deciphering after receiving its own information. This invention also includes another method for enhancing SACCH performance, which can significantly improve the error tolerance of the SACCH using the method of retransmitting the SACCH when the TCH is in the DTX state and does not need to send any information. According to the present invention, the code error rate of the SACCH can be decreased and the SACCH performance can be enhanced, thus realizing the object of improving the system capacity.
摘要:
This invention relates to a supported nonmetallocene catalyst for olefin polymerization, which is produced by directly reacting a nonmetallocene ligand with a catalytically active metallic compound on a carrier through an in-situ supporting process. The process according to this invention is simple and feasible, and it is easy to adjust the load of the nonmetallocene ligand on the porous carrier. The supported nonmetallocene catalyst according to this invention can be used for olefin homopolymerization/copolymerization, even in combination with a comparatively less amount of the co-catalyst, to achieve a comparatively high polymerization activity. Further, the polymer product obtained therewith boasts desirable polymer morphology and a high bulk density.
摘要:
A method for controlling data transmission comprising following steps of: obtaining transmission delays and time differences between a RNC and respective base stations by the RNC; configuring cells and a common channel for data transmitting by the RNC; controlling a start time of data transmission of each cells by the RNC; informing a UE of a frame offset and a chip offset of the common channel through an interface Uu by the RNC; and receiving configuration parameters of the common channel transmitted from the RNC by the UE. In the present invention, merging of signals transmitted from different cells via the common channel has been achieved so that the quality of signals received by the UE has been improved and the throughput of the system has been enlarged.
摘要:
A method for transmitting HARQ-ACK, for N downlink component carriers and 1 uplink component carrier, transmitting HARQ-ACK information of N downlink component carriers in HARQ-ACK channel of an uplink component carrier, one of N downlink component carrier being a reference downlink component carrier, comprising steps of: on consecutive HARQ-ACK channels beginning with the first of N downlink component carrier, transmitting HARQ-ACK for CCE in the reference downlink component carrier; and on consecutive HARQ-ACK channels beginning with N(I)PUCCH, N(I)PUCCH+f(k) transmitting HARQ-ACK for CCE in other downlink component carriers, wherein k is information related to downlink component carrier. The method of this invention can reduce the HARQ-ACK channel overhead of uplink component carrier and the limitations on the flexibility of the scheduler in the base station.