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    • 25. 发明申请
    • UPLINK LOAD CONTROL METHOD AND APPARATUS USED IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中使用的UPLINK负载控制方法和设备
    • WO2013067656A1
    • 2013-05-16
    • PCT/CN2011/001888
    • 2011-11-11
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)LIU, JinhuaZHANG, ZhangBLOMGREN, MatsJOHANSSON, Klas
    • LIU, JinhuaZHANG, ZhangBLOMGREN, MatsJOHANSSON, Klas
    • H04W28/08
    • H04W28/0284H04W28/0236H04W28/0289H04W52/343
    • The present invention discloses schemes to perform load control taking uplink BLER statistics into account. An uplink load control method and apparatus are provided in a wireless communication system. The uplink load control method comprises estimating uplink load budget in a cell of the wireless communication system; determining whether the cell is over-loaded based on Block Error Rate (BLER) statistics of non- Guarded Bit Rate (non-GBR) users in the cell and/or Fast Congestion Control (FCC) action statistics in the cell; decreasing the uplink load budget if it is determined that the cell is over-loaded; and increasing the uplink load budget if it is determined that the cell is not over-loaded. Preferably, increasing or decreasing of the uplink load budget is based on the BLER stastics BLER statistic of targeted users by FCC. By means of the BLER and FCC status, BLER of EUL users can be controlled in an acceptable range while maximizing the benefit of FCC in improving load utilization and consequently uplink throughput as much as possible. On the other hand, the uplink load control method can further comprises adjusting a RoT target RoT tgt , based on BLER statistics of Guarded Bit Rate (GBR) users in order to increase load headroom available for non- GBR users in appropriate conditions without violating the performance of GBR users.
    • 本发明公开了进行上行BLER统计的负载控制的方案。 在无线通信系统中提供上行链路负载控制方法和装置。 上行链路负载控制方法包括估计无线通信系统的小区中的上行负载预算; 基于小区中的非保密比特率(非GBR)用户和/或快速拥塞控制(FCC)动作统计信息中的块错误率(BLER)统计信息来确定该小区是否超载; 如果确定小区被超载,则减小上行链路负载预算; 并且如果确定该小区未被过载,则增加上行链路负载预算。 优选地,上行负载预算的增加或减少是基于FCC的目标用户的BLER stastics BLERstatistic。 通过BLER和FCC状态,可以将EUL用户的BLER控制在可接受的范围内,同时最大限度地提高FCC的优点,尽可能地提高负载利用率,从而提高上行链路吞吐量。 另一方面,上行链路负载控制方法还可以包括基于保护比特率(GBR)用户的BLER统计来调整RoT目标RoTtgt,以便在适当的条件下增加非GBR用户可用的负载净空,而不违反性能 的GBR用户。
    • 28. 发明申请
    • A METHOD OF TRANSMITTING TPC COMMANDS
    • 传输TPC命令的方法
    • WO2009096830A1
    • 2009-08-06
    • PCT/SE2008/050112
    • 2008-01-29
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)ZHANG, ZhangKAZMI, Muhammad AliWANG HELMERSSON, KELINDOFF, BengtHU, Rong
    • ZHANG, ZhangKAZMI, Muhammad AliWANG HELMERSSON, KELINDOFF, BengtHU, Rong
    • H04B7/005
    • H04W52/36H04W52/225H04W52/228H04W52/241H04W52/247
    • In a cellular radio system Transmission Power Control (TPC) power offset is set sothat it is adjusted for each transmitting radio base station based on available relevant measurements that reflect the quality of the downlink channel carrying the uplink TPC command whereby an improved performance is obtained. The TPC power offset can for example be based on an estimated uplink Dedicated Physical Control CHannel (DPCCH) SINR, the number of TPC "up" and the number of TPC "down" sent bya radio base station and aggregated UE receiver power or UE transmit power over a number N slots. Also a mobile station used in a cellular radio system supporting soft handover may be adapted to apply TPC discarding thresholds based on the number and the quality of simultaneously received TPC commands. The discarding procedure in the mobile station may also be carried out selectively such that TPC commands that are determined to be unreliable are not discarded but selectively discarded based on how reliable they are determined to be.
    • 在蜂窝无线电系统中,传输功率控制(TPC)功率偏移被设置为基于可反映进行上行链路TPC命令的下行链路信道的质量的可用的相关测量来调整每个发射无线电基站,由此获得改进的性能。 TPC功率偏移可以例如基于由无线电基站发送的估计的上行链路专用物理控制信道(DPCCH)SINR,TPC“up”的数量和“下”的数量,以及聚合的UE接收机功率或UE传输 上电N个插槽。 此外,支持软切换的蜂窝无线电系统中使用的移动站也可以适用于基于同时接收的TPC命令的数量和质量来应用TPC丢弃阈值。 也可以选择性地执行移动台中的丢弃过程,使得被确定为不可靠的TPC命令不被丢弃,而是基于它们被确定的可靠性而被选择性地丢弃。