80results about How to "Improve uplink throughput" patented technology

The invention relates to a method for increasing feedback capacity of an uplink of a time division duplex system, which includes the following steps: step 1 within an uplink time slot of a wireless frame on a bidirectional spectrum in the time division duplex system and on the bidirectional spectrum, a terminal sends signals to a base station; step 2 within a time slot of a wireless frame on a downlink unidirectional spectrum which is corresponding to the uplink time slot in the time division duplex system and on the downlink unidirectional spectrum, the terminal receives feedback information sent by the base station. The invention can allow the feedback delay of the time division duplex system to be smaller than a period of a wireless frame, thus shortening the delay of power control, channel information feedback and dynamic dispatching on the uplink in the time division duplex system and greatly increasing the throughout capacity of the uplink in the time division duplex system as well as the support capacity for a high-speed mobile terminal. By adopting the invention, the time division duplex system keeps the inherent advantages and further has the advantages of small delay for closed loop control in an FDD system and support of high-speed movement.

A first problem is to reduce an enormous uplink throughput of a base station that feedback information needs so as to improve an uplink throughput of useful user data. A second problem is to carry out a frequency segment assignment to guarantee a number of communication times and a communication quality to every terminal apparatus so as to increase a downlink throughput. The second problem is solved together. As means to give the number of communication times per each terminal apparatus, means to estimate an expected value of the number of communication times per each terminal apparatus, and means to assign the terminal apparatus per each frequency segment are arranged in the base station apparatus. To increase the communication quality, necessary means in each terminal apparatus are: means to measure statistics values of a communication capacity with regard to all the frequency segments; means to feed back the statistics values to the base station apparatus; means to calculate the occurrence probability of a high communication capacity based on the communication capacity statistics values per each frequency segment of all the terminal apparatuses; and means to assign the terminal apparatus per each frequency segment. To fuse the means to give the number of communication times and the means to give the communication quality, the means to assign the terminal apparatus per each frequency segment that the base station apparatus has assigns a frequency segment that has a little number of competitors sharing a same segment, and has high average and dispersion of the communication capacity to each terminal apparatus.

An embodiment of the present invention provides a method for controlling transmission of SRS, and a base station apparatus, used for reducing an uplink wireless resource occupied by the SRS, and increasing uplink transaction capacity; the method includes: determining, by the base station, channel state information of a terminal; determining, by the base station, beaming forming manna used when transmitting data to the terminal according to the channel state information; and when the determined beam forming manner is codebook based beam forming, sending an indicating message to the terminal to indicate the terminal to add a sending period of the SRS, or to indicate the terminal to send the SRS only when receiving a signaling of the base station.

The embodiment provides a control method and apparatus for a secondary carrier in asymmetric uplink carrier aggregation. The method comprises the steps that a base station transmits configuration information of an uplink secondary carrier configured for the terminal to a terminal, wherein the configuration information comprises carrier-class public configuration information and/or terminal-class configuration information; and further, the base station schedules the uplink secondary carrier via a physical downlink control channel (PDCCH) of a downlink primary carrier based on the aggregation manner of the primary carrier and the uplink secondary carrier so that the terminal can schedule a physical uplink shared channel (PUSCH) for the base station via the uplink secondary carrier, the control on the secondary carrier in the asymmetric uplink carrier aggregation is achieved, and thus, the uplink throughput is significantly improved.

The invention provides an HSUPA (High Speed Uplink Packet Access) scheduler and a scheduling method by adopting MU MIMO (Multiple User Multiple Input Multiple Output) technology, aiming to realize the scheduling of UE so as to share the resource except the resource occupied by the uplink channels scheduling E-PUCH (Enhanced Physical Uplink Channel) resource in MU MIMO mode or the uplink idle resource. The scheduling of the uplink channels out of the E-PUCH includes but not limited to: UL-DPCH (Uplink Dedicated Physical Channel), unscheduled E-PUCH, SPSE-PUCH, HS-SICH (High Speed Shared Information Channel), PRACH (Physical Random Access Channel) and E-RUCCH (E-DCH (Enhanced Dedicated Channel) Random-Access Uplink Control Channel). If the uplink channel types in the later TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system increase, the invention can be extended to apply to the increased uplink channels, namely the scheme can realize the scheduling of UE to multiplex uplink resources constituted by all uplink time slots in MU MIMO mode, so the uplink throughputs and the uplink peak rate of the HSUPA can be improved. The invention also provides a midamble shift in a default configuration mode to distribute the midamble shift for the HSUPA UEs which multiplex the same resource.

The application provides a re-synchronization triggering method and a base station. The method comprises the following steps that: after uplink secondary carrier cell (SCC) is activated, the base station immediately triggers re-synchronization, wherein a triggering moment of the re-synchronization is T1; and the base station detects whether a feedback signal of the re-synchronization is received or not within a preset time range, and if so, triggers the re-synchronization, wherein a starting moment of the preset time range is the T1, an ending moment of the preset time range is T2, and a difference value between the T2 and the T1 is less than or equal to 30 milliseconds. The base station immediately triggers the re-synchronization after the uplink SCC is triggered, so that lag time of the re-synchronization can be shortened, and the uplink throughput is increased. If the feedback signal of the re-synchronization is not received within the preset time range, the base station triggers the re-synchronization once again, so that compatibility with different terminals can be realized, and the terminals can correctly demodulate physical downlink control channel commands.

The invention discloses an uplink and downlink unified resource allocation method, including the steps of: preferentially performing uplink and downlink scheduling on users with uplink and downlink business at the same time at a first sub-frame, allocating resource quantities with corresponding proportions according to the business volume proportions in different link directions, and preferentially performing downlink resource scheduling on the users only with downlink business at a second sub-frame. The subsequently relevant uplink sub-frame of the first sub-frame is not report time of a CQI (Channel Quality Indicator)/PMI (Precoding Matrix Indicator) or SRI (Scheduling Request Indicator) of the user; the subsequently relevant uplink sub-frame of the second sub-frame is the report time of the CQI/PMI or SRI of the user; and in the subsequently relevant uplink sub-frame, report time of an ACK/NACK (Acknowledgement/Negative-Acknowledgement) transmitted by the downlink business is also the target uplink sub-frame authorized by the uplink scheduling in the scheduling sub-frame at the same time. According to the uplink and down link unified resource allocation method, promotion of uplink handling capacity can be achieved by increasing the available resource quantity of a PUSCH (Physical Uplink Control Channel).

The application discloses a wireless local area network (WLAN) access method, an access point and a WLAN system. the method comprises the following steps: the access point obtains an uplink access conflict; when it is determined that the uplink access conflict exceeds a preset threshold value, the access point broads a first clear-to-send signal to all workstations associated with the access point, wherein the first clear-to-send signal contains a media access control address of a first workstation associated with the access point; and data sent by the first workstation is received. By the above mode, when an obvious uplink access conflict exits in WLAN, a competitive mechanism is avoided and uplink throughput of WLAN is raised.

The invention discloses a method and a device for receiving CSI (Channel State Information), and a method and a device for reporting the CSI, so as to reduce PUCCH (Physical Uplink Control Channel) resources occupied by the multi-carrier CSI under CA (Carrier Aggregation). The method of receiving the CSI comprises steps: as for each piece of UE, time-frequency resources for receiving the CSI on the PUCCH of a primary carrier are determined, wherein as for the same UE, in each receiving period, the time-frequency resources for receiving the CSI are the same, and as for different UE, in each receiving period, the time-frequency resources for receiving the CSI are different; and as for each piece of UE, in each receiving period, the time-frequency resources for receiving the CSI on the PUCCH receive the CSI of a member carrier reported by the UE, wherein the CSI reported by the UE received in at least two adjacent receiving periods is CSI of different member carriers.