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    • 2. 发明授权
    • Network access method and system for machine type communications
    • 网络接入方式和机器类型通信系统
    • US08953538B2
    • 2015-02-10
    • US13578172
    • 2010-02-12
    • Qun ZhaoWu ZhengJimin Liu
    • Qun ZhaoWu ZhengJimin Liu
    • H04W4/00H04W74/08H04W28/04H04W74/00
    • H04W74/08H04W4/70H04W74/004H04W74/006H04W74/0841
    • The present invention provides a network access method and system for Machine Type Communications (MTC), wherein the method comprises the following steps: an MTC device sends a preamble to a base station; the base station sends a Random Access Response (RAR) to the MTC device; if the RAR does not contain a temporary access resource assignment indication, the MTC device sends a Layer 2/Layer 3 message to the base station; otherwise, the MTC device re-attempts to perform network access; the base station sends a contention resolution message to the MTC device; if the contention resolution message contains a self-identification contained in the Layer 2/Layer 3 message sent by the MTC device, the network access is completed; if the contention resolution message contains the temporary access resource assignment indication, the MTC device re-attempts to perform the network access; otherwise, the MTC device attempts to perform the network access using the originally used access resource again. According to the present invention, it is enabled to dynamically and quickly perform assignment and release of MTC access resources based on actual access resource collisions, which thereby avoids waste of uplink resources in a semi-static configuration, reduces the possibility of collision, and protects normal access of non-MTC devices.
    • 本发明提供了一种用于机器类型通信(MTC)的网络接入方法和系统,其中所述方法包括以下步骤:MTC设备向基站发送前同步码; 基站向MTC设备发送随机接入响应(RAR); 如果RAR不包含临时接入资源分配指示,则MTC设备向基站发送第2层/第3层消息; 否则,MTC设备重新尝试执行网络接入; 基站向MTC设备发送争用解决消息; 如果争用解决消息包含由MTC设备发送的第2层/第3层消息中包含的自身标识,则完成网络访问; 如果竞争解决消息包含临时接入资源分配指示,则MTC设备重新尝试执行网络接入; 否则,MTC设备尝试再次使用最初使用的接入资源执行网络接入。 根据本发明,能够基于实际的接入资源冲突来动态地并且快速地执行MTC接入资源的分配和释放,从而避免了在半静态配置中浪费上行链路资源,减少了冲突的可能性,并且保护 非MTC设备的正常访问。
    • 4. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING DOWNLINK DATA TRANSMISSION IN A MULTI-HOP RELAY COMMUNICATION SYSTEM
    • 用于控制多通道继电器通信系统中的下行链路数据传输的方法和装置
    • US20120140704A1
    • 2012-06-07
    • US13390570
    • 2009-08-17
    • Qun ZhaoJimin LiuWu Zheng
    • Qun ZhaoJimin LiuWu Zheng
    • H04B7/14
    • H04L1/1874H04L1/1614H04L1/1621H04L1/1809H04L1/1835H04L2001/0097H04W28/065H04W36/0055H04W84/047
    • In order to address the problem of RLC layer relaying in the prior art that downlink user data of a user equipment with an access through a relay station may be lost due to a handover, the invention proposes solutions of a method and apparatus for controlling downlink data transmission in a multi-hop relay communication system so that when a next-hop network device of a base station is a relay station, an RLC entity of the base station transmits an indication message to a PDCP entity of the base station, to trigger the PDCP entity of the base station to discard a PDCP SDU corresponding to at least one PDCP PDU, upon reception of a user equipment delivery acknowledgement message from the access relay station to acknowledge delivery of the at least one PDCP PDU to the user equipment. The access relay generates the user equipment delivery acknowledgement message upon reception from the user equipment of positive acknowledgement messages for all the RLC PDUs corresponding to the at least one PDCP PDU. Preferably status information on whether an RLC SDU has been acknowledged, which is buffered between the access relay station and the base station, can be synchronized implicitly.
    • 为了解决现有技术中的RLC层中继的问题,通过中继站的接入的用户设备的下行用户数据可能由于切换而丢失,本发明提出了一种用于控制下行链路数据的方法和装置的解决方案 在多跳中继通信系统中的传输,使得当基站的下一跳网络设备是中继站时,基站的RLC实体向基站的PDCP实体发送指示消息,以触发 在接收到来自接入中继站的用户设备递送确认消息以确认至少一个PDCP PDU到用户设备的传送时,基站的PDCP实体丢弃与至少一个PDCP PDU对应的PDCP SDU。 接入中继从用户设备接收到对应于至少一个PDCP PDU的所有RLC PDU的肯定确认消息,生成用户设备递送确认消息。 优选地,可以隐式同步关于在接入中继站和基站之间缓冲的RLC SDU是否被确认的状态信息。
    • 5. 发明申请
    • METHODS, APPARATUSES AND NODES FOR DETERMINING AND ADJUSTING TARGET PACKET DELAY OF A LINK SEGMENT
    • 用于确定和调整链接分段的目标分组延迟的方法,装置和编号
    • US20130028127A1
    • 2013-01-31
    • US13639157
    • 2010-04-06
    • Wu ZhengQun ZhaoJimin LiuXiaobing LengGang Shen
    • Wu ZhengQun ZhaoJimin LiuXiaobing LengGang Shen
    • H04W24/00
    • H04L43/0852H04B7/2606H04L47/283H04W28/0205H04W28/0236H04W84/047
    • In embodiments of the present invention, there is disclosed a method, apparatus, and network node for determining target packet delays of respective segments of a link. The method may comprise: collecting parameters affecting packet delays; and determining target packet delays of respective segments based on the collected parameters and an overall requirement on the packet delay of the link according to a relation between the packet delays of respective segments and an overall packet delay of the link. Besides, there is further provided a method, apparatus, and network node for adjusting target packet delays of respective segments of a link. With embodiments of the present invention, it is provided a solution of a packet delay guarantee for a multi-hop relay system, and the solution has a great scalability and a good backward compatibility and is transparent to both the core network and user equipments.
    • 在本发明的实施例中,公开了一种用于确定链路的相应段的目标分组延迟的方法,装置和网络节点。 该方法可以包括:收集影响分组延迟的参数; 以及根据所收集的参数以及根据各个分段的分组延迟与链路的整体分组延迟之间的关系的链路的分组延迟的总体要求来确定各个分段的目标分组延迟。 此外,还提供了一种用于调整链路的各个段的目标分组延迟的方法,装置和网络节点。 本发明实施例提供了多跳中继系统的分组延迟保证的解决方案,该解决方案具有很大的可扩展性和良好的向后兼容性,对核心网和用户设备都是透明的。
    • 6. 发明申请
    • NETWORK ACCESS METHOD AND SYSTEM FOR MACHINE TYPE COMMUNICATIONS
    • 网络接入方法与机器通信系统
    • US20120307774A1
    • 2012-12-06
    • US13578172
    • 2010-02-12
    • Qun ZhaoWu ZhengJimin Liu
    • Qun ZhaoWu ZhengJimin Liu
    • H04W72/04
    • H04W74/08H04W4/70H04W74/004H04W74/006H04W74/0841
    • The present invention provides a network access method and system for Machine Type Communications (MTC), wherein the method comprises the following steps: an MTC device sends a preamble to a base station; the base station sends a Random Access Response (RAR) to the MTC device; if the RAR does not contain a temporary access resource assignment indication, the MTC device sends a Layer 2/Layer 3 message to the base station; otherwise, the MTC device re-attempts to perform network access; the base station sends a contention resolution message to the MTC device; if the contention resolution message contains a self-identification contained in the Layer 2/Layer 3 message sent by the MTC device, the network access is completed; if the contention resolution message contains the temporary access resource assignment indication, the MTC device re-attempts to perform the network access; otherwise, the MTC device attempts to perform the network access using the originally used access resource again. According to the present invention, it is enabled to dynamically and quickly perform assignment and release of MTC access resources based on actual access resource collisions, which thereby avoids waste of uplink resources in a semi-static configuration, reduces the possibility of collision, and protects normal access of non-MTC devices.
    • 本发明提供了一种用于机器类型通信(MTC)的网络接入方法和系统,其中所述方法包括以下步骤:MTC设备向基站发送前同步码; 基站向MTC设备发送随机接入响应(RAR); 如果RAR不包含临时接入资源分配指示,则MTC设备向基站发送第2层/第3层消息; 否则,MTC设备重新尝试执行网络接入; 基站向MTC设备发送争用解决消息; 如果争用解决消息包含由MTC设备发送的第2层/第3层消息中包含的自身标识,则完成网络访问; 如果竞争解决消息包含临时接入资源分配指示,则MTC设备重新尝试执行网络接入; 否则,MTC设备再次尝试使用最初使用的接入资源执行网络接入。 根据本发明,能够基于实际的接入资源冲突来动态地并且快速地执行MTC接入资源的分配和释放,从而避免了在半静态配置中浪费上行链路资源,减少了冲突的可能性,并且保护 非MTC设备的正常访问。
    • 8. 发明授权
    • Protection against data corruption for multi-level memory cell (MLC) flash memory
    • 防止多层存储单元(MLC)闪存中的数据损坏
    • US08549214B2
    • 2013-10-01
    • US13023905
    • 2011-02-09
    • Qun ZhaoXinhai Kang
    • Qun ZhaoXinhai Kang
    • G06F12/00
    • G11C16/10G11C11/5628G11C16/349G11C2211/5641G11C2211/5643
    • Apparatus having corresponding methods and non-transitory computer-readable media comprise a flash controller configured to control a multi-level memory cell (MLC) flash memory, wherein the MLC flash memory includes a plurality of memory blocks, wherein each memory block includes a plurality of memory cells defining a plurality of pages, wherein each memory cell spans a group of the pages in one of the memory blocks, and wherein the flash controller comprises circuitry configured to receive data to be written to the MLC flash memory, select only one page, from each group of the pages, in one or to more of the memory blocks, and write the data only to the selected pages.
    • 具有相应方法和非暂时计算机可读介质的装置包括被配置为控制多级存储器单元(MLC)闪速存储器的闪存控制器,其中MLC闪速存储器包括多个存储器块,其中每个存储块包括多个存储器单元 定义多个页面的存储器单元,其中每个存储器单元跨越所述存储器块之一中的一组页面,并且其中所述闪存控制器包括被配置为接收要被写入所述MLC闪存的数据的电路,仅选择一个页面 ,从每组页面中,在一个或多个存储器块中,并将数据仅写入所选择的页面。