Method and apparatus for performing idle handoff in a multiple access communication system
    61.
    发明授权
    Method and apparatus for performing idle handoff in a multiple access communication system 有权
    用于在多址通信系统中执行空闲切换的方法和装置

    公开(公告)号:US06178164B1

    公开(公告)日:2001-01-23

    申请号:US09168191

    申请日:1998-10-07

    IPC分类号: H04Q720

    摘要: In a mobile communication system having a first communication device for communicating with a plurality of second communication devices, a method for performing handoff within the mobile communication system includes transmitting from at least one of the second communication devices to the first communication device a handoff list of second communication devices to which the first communication device is permitted to handoff. A channel assignment message is transmitted from each of the second communications devices in the handoff list. The handoff list includes base stations controlled by a single controller that determines which of the second communication devices transmits the channel assignment message. The base stations on the handoff list have pilot signals and the energy levels of the pilot signals are measured by the first communication device. The measured energy levels are transmitted to the controller and compared by the controller to provide an energy level list of base stations according to the comparing. The energy level list is transmitted to the first communication device and the handoff is performed according to the energy level list.

    摘要翻译: 在具有用于与多个第二通信设备进行通信的第一通信设备的移动通信系统中,在移动通信系统内执行切换的方法包括从第二通信设备中的至少一个向第一通信设备发送切换列表 允许第一通信设备切换到的第二通信设备。 从切换列表中的每个第二通信设备发送信道分配消息。 切换列表包括由单个控制器控制的基站,其确定哪个第二通信设备发送信道分配消息。 切换列表上的基站具有导频信号,导频信号的能级由第一通信装置测量。 测量的能量水平被传输到控制器,并由控制器进行比较,以根据比较提供基站的能级列表。 能量级列表被发送到第一通信设备,并且根据能级列表执行切换。

    Method and apparatus for time efficient retransmission using symbol
accumulation
    63.
    发明授权
    Method and apparatus for time efficient retransmission using symbol accumulation 失效
    使用符号累加的时间有效重传的方法和装置

    公开(公告)号:US6101168A

    公开(公告)日:2000-08-08

    申请号:US969319

    申请日:1997-11-13

    摘要: An efficient retransmission of data using symbol accumulation wherein the packet received in error is retransmitted at a lower energy-per-bit level concurrently in the same frame with the new packet. The destination device receives the data transmission and retransmission, demodulate the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet.

    摘要翻译: 使用符号累积的数据的有效重传,其中以与新分组相同的帧同时以较低的每比特能级重发误差接收的分组。 目的设备接收数据传输和重传,对信号进行解调,并将接收到的数据分离成新的和重发的分组。 然后,目的地设备以错误地接收的分组已经累积的能量累积重传分组的能量,并对累积的分组进行解码。 由后续重传提供的附加能量的累加提高了正确解码的概率。 可以提高吞吐率,因为与新数据分组的传输同时重发错误接收的分组。 容量被最大化,因为错误地接收到的分组的重传处于比新分组更低的能级。

    Method and apparatus for performing mobile assisted hard handoff between
communication systems
    64.
    发明授权
    Method and apparatus for performing mobile assisted hard handoff between communication systems 失效
    用于在通信系统之间执行移动辅助硬切换的方法和装置

    公开(公告)号:US5999816A

    公开(公告)日:1999-12-07

    申请号:US816746

    申请日:1997-02-18

    IPC分类号: H04W36/14 H04Q7/00

    摘要: A method and apparatus for performing inter-system hard handoff between communication systems or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during inter-system hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station will return to the original system with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station monitors the destination system then returns to the original system with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station by the base station or a set of offsets based upon a predetermined search algorithm.

    摘要翻译: 公开了一种用于在CDMA通信系统内进行通信系统之间的系统间硬切换或频间硬切换的方法和装置。 本发明的目的是降低在系统间硬切换期间掉话的可能性。 在硬切换尝试不成功的情况下,移动台将利用本发明的通信系统用于协助未来切换尝试的执行的信息返回到原始系统。 或者,在没有进行切换尝试的情况下,移动台监视目的地系统,然后利用用于辅助随后的切换尝试的信息返回到原始系统。 从监视CDMA系统返回的信息包括搜索由基站提供给移动台的特定列表中的偏移处给出的一个或多个导频的结果或基于预定搜索算法的一组偏移量的结果。

    Dynamic channelization code allocation
    65.
    发明授权
    Dynamic channelization code allocation 失效
    动态渠道化代码分配

    公开(公告)号:US08699505B2

    公开(公告)日:2014-04-15

    申请号:US10345528

    申请日:2003-01-15

    IPC分类号: H04B7/216

    摘要: Techniques for efficient allocation of channelization codes are disclosed. In one aspect, a dedicated data channel is partitioned into a primary channel and a secondary channel. The rate of the primary channel is a relatively low fixed rate. The rate of the secondary channel varies over time in accordance with the rate of the dedicated channel data. In another aspect, a channelization code indicator is transmitted in the primary channel to identify the secondary channel. In yet another aspect, more than one secondary channel may be deployed. Various other aspects are also presented. These aspects have the benefit of efficient code resource allocation, resulting in increased support for users/and or channels, as well as increased system capacity.

    摘要翻译: 公开了用于有效分配信道化码的技术。 在一个方面,专用数据信道被划分为主信道和次信道。 主要渠道的比率是相对较低的固定利率。 次级通道的速率根据专用通道数据的速率随时间而变化。 在另一方面,在主信道中发送信道化码指示符以识别次信道。 在另一方面,可以部署多于一个的次级信道。 还提出了各种其他方面。 这些方面有利于高效的代码资源分配,从而增加对用户/或渠道的支持,以及增加的系统容量。

    Scheduled and autonomous transmission and acknowledgement

    公开(公告)号:US08526966B2

    公开(公告)日:2013-09-03

    申请号:US11490228

    申请日:2006-07-19

    IPC分类号: H04W72/00

    摘要: Techniques for efficient signaling to and from a plurality of mobile stations are disclosed. In one embodiment, a subset of mobile stations may be allocated a portion of the shared resource with one or more individual access grants, another subset may be allocated a portion of the shared resource with a single common grant, and yet another subset may be allowed to use a portion of the shared resource without any grant. In another embodiment, an acknowledge and continue command is used to extend all or a subset of the previous grants without the need for additional requests and grants, and their associated overhead. In one embodiment, a traffic to pilot ratio (T/P) is used to allocate a portion of the shared resource, allowing a mobile station flexibility in selecting its transmission format based on T/P.

    Method and apparatus for maximizing the use of available capacity in a communication system

    公开(公告)号:US08379605B2

    公开(公告)日:2013-02-19

    申请号:US11862877

    申请日:2007-09-27

    IPC分类号: H04B7/216 H04B7/00

    摘要: A method and apparatus for maximizing the use of available capacity in a communication system. The forward link in the mobile radio system includes a plurality of traffic streams sent on at least one channel from the base station to the mobile stations. A first output power level associated with simultaneously transmitting a first set of traffic streams from the base station to the mobile stations on the forward link is initially determined. Next, the first output power level is compared to the maximum power ceiling. In response to the comparing step, at least one time frame in the forward link having available capacity for transmitting a portion of at least one further traffic stream is identified. The first set of traffic streams and the portion of the at least one further traffic stream are then transmitted simultaneously during the at least one frame on the forward link.

    Method and apparatus for call setup latency reduction
    69.
    发明授权
    Method and apparatus for call setup latency reduction 有权
    呼叫建立延迟降低的方法和装置

    公开(公告)号:US08126469B2

    公开(公告)日:2012-02-28

    申请号:US11565598

    申请日:2006-11-30

    摘要: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.

    摘要翻译: 公开了用于最小化呼叫建立延迟的技术。 在一个方面,用标志发送信道分配消息,以指示使用先前协商的服务参数。 这方面消除了对服务协商消息的需要。 在另一方面,使用活动集标识符而不是活动集及其参数发送信道分配消息。 该方面减少了信道分配消息的传输时间。 在另一方面,移动台(106)在主动通信会话之间发送导频强度测量消息来促进无寻呼的呼叫建立,使得信道分配消息可用于移动台终止的呼叫建立而不需要移动台 寻呼和相关消息。

    Method and apparatus for call setup latency reduction
    70.
    发明授权
    Method and apparatus for call setup latency reduction 有权
    呼叫建立延迟降低的方法和装置

    公开(公告)号:US07894403B2

    公开(公告)日:2011-02-22

    申请号:US11565602

    申请日:2006-11-30

    IPC分类号: H04B7/216 H04W72/00

    摘要: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.

    摘要翻译: 公开了用于最小化呼叫建立延迟的技术。 在一个方面,用标志发送信道分配消息,以指示使用先前协商的服务参数。 这方面消除了对服务协商消息的需要。 在另一方面,使用活动集标识符而不是活动集及其参数发送信道分配消息。 该方面减少了信道分配消息的传输时间。 在另一方面,移动台(106)在主动通信会话之间发送导频强度测量消息来促进无寻呼的呼叫建立,使得信道分配消息可用于移动台终止的呼叫建立而不需要移动台 寻呼和相关消息。