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公开(公告)号：US5521906A
公开(公告)日：1996-05-28
申请号：US378846
申请日：1995-01-26
CPC分类号： H04L5/0007 , H04L5/0046 , H04L5/0064 , H04L5/0087 , H04L5/0094
摘要： In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), carrier channel allocations may be updated as follows. At periodic intervals, the primary site requests updating bit loading information from the secondary sites. Upon receiving the updated bit loading information, the primary site (102) determines an updated call bit loading table for each active call. From this, the primary site (102) determines whether current carrier channel allocation provides sufficient bandwidth. When the current carrier channel allocation does not provide the sufficient bandwidth, the primary site modifies the current carrier channel allocation to meet the bandwidth requirements.
摘要翻译： 在利用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，可以如下更新载波信道分配。 在主要站点周期性地，请求从次要站点更新位加载信息。 一旦接收到更新的位加载信息，主站点（102）为每个活动呼叫确定更新的呼叫位加载表。 由此，主站点（102）确定当前载波信道分配是否提供足够的带宽。 当当前载波信道分配不能提供足够的带宽时，主站修改当前载波信道分配以满足带宽要求。
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2.发明授权Method and apparatus for a DMT receiver having a data de-formatter coupled directly to a constellation decoder 失效具有直接耦合到星座解码器的数据解格式器的DMT接收机的方法和装置
公开(公告)号：US5539777A
公开(公告)日：1996-07-23
申请号：US378431
申请日：1995-01-26
CPC分类号： H04L5/023
摘要： In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), the primary site (102) and each of the secondary sites (104-108) includes a DMT receiver. Such a DMT receiver includes a discrete multi-tone decoder that receives a time domain discrete multi-tone symbol and produces an ordered data stream based on bit loading information and a data de-formatter, operably coupled to the discrete multi-tone decoder, wherein the data de-formatter receives the ordered data stream and produces a recovered data stream based on carrier channel allocation information.
摘要翻译： 在利用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，主站点（102）和每个次站点（104-108）包括DMT接收机。 这种DMT接收机包括离散多音调解码器，其接收时域离散多音调符号，并且基于比特加载信息产生有序数据流，并且可操作地耦合到离散多音调解码器的数据解格式器，其中 数据解码器接收有序数据流，并且基于载波信道分配信息产生恢复的数据流。
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3.发明授权
公开(公告)号：US5533008A
公开(公告)日：1996-07-02
申请号：US381602
申请日：1995-01-26
CPC分类号： H04W92/02 , H04L27/2608 , H04W24/06 , H04W92/12
摘要： In a communication system utilizing DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), infrastructure control channels are established in the following manner. Having obtained a plurality of site bit loading tables, the primary site (102) generates a control channel bit loading table from the plurality of site bit loading tables. From the control channel bit loading table, the primary site selects at least one carrier channel to function as the control channel. The selection is based on bandwidth requirements for the control channel.
摘要翻译： 在利用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，以下列方式建立基础设施控制信道。 在获得多个站点位加载表之后，主站点（102）从多个站点位加载表生成控制通道位加载表。 从控制通道位加载表中，主站点选择至少一个载波信道用作控制信道。 该选择基于控制信道的带宽要求。
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公开(公告)号：US5682419A
公开(公告)日：1997-10-28
申请号：US378852
申请日：1995-01-26
CPC分类号： H04M11/06 , H04L27/2608 , H04W92/12
摘要： In a communication system that employs DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), call support infrastructure is obtained as follows. Having received a call request, the primary site (102) identifies targeted subscribers and target secondary sites, i.e., the secondary sites having a targeted subscriber affiliated therewith. Next, the primary site determines a call bit loading table from the site bit loading tables of the target secondary sites. Having done this, the primary site selects, based on bandwidth requirements of the call, at least one carrier channel to provide the infrastructure support for the call.
摘要翻译： 在采用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，获得呼叫支持基础设施如下。 接收到呼叫请求后，主站点（102）识别目标用户和目标辅助站点，即具有与其相关联的目标用户的辅助站点。 接下来，主站点从目标辅助站点的站点位加载表确定调用位加载表。 完成此操作后，主站点将根据呼叫的带宽要求选择至少一个运营商频道，为呼叫提供基础架构支持。
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5.发明授权
公开(公告)号：US5619505A
公开(公告)日：1997-04-08
申请号：US378697
申请日：1995-01-26
CPC分类号： H04L27/2608
摘要： A data stream provided to a DMT transmitter (114) is altered to produce an ordered data stream. The ordered data stream is produced by storing the data stream using a first addressing scheme, and then reading the data using a second addressing scheme. The ordered data stream is then converted in to a DMT symbol which is transmitted to a DMT receiver (112). The DMT receiver (112), using the first and second addressing schemes, recovers the ordered data stream and then the original data stream.
摘要翻译： 提供给DMT发射机（114）的数据流被改变以产生有序数据流。 有序数据流通过使用第一寻址方案存储数据流，然后使用第二寻址方案读取数据来产生。 然后将有序数据流转换为发送到DMT接收器（112）的DMT符号。 使用第一和第二寻址方案的DMT接收机（112）恢复有序数据流，然后恢复原始数据流。
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6.发明授权
公开(公告)号：US5608725A
公开(公告)日：1997-03-04
申请号：US378850
申请日：1995-01-26
CPC分类号： H04M11/062 , H04L27/2608 , H04L29/06 , H04L29/06027 , H04W92/12
摘要： A communication system (100) includes a primary site (102) coupled to a plurality of secondary sites (104-108) using DMT technology. The primary site (102) includes a controller, a data multiplexing switch, a Discrete Multi-Tone transmitter, and a Discrete Multi-Tone receiver. Each of the secondary sites (104-108) includes a site controller, a subscriber interface, and a secondary Discrete Multi-Tone receiver.
摘要翻译： 通信系统（100）包括使用DMT技术耦合到多个次要站点（104-108）的主站点（102）。 主站点（102）包括控制器，数据多路复用开关，离散多音发送器和离散多音接收器。 每个次要站点（104-108）包括站点控制器，订户接口和辅助离散多音接收机。
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7.发明授权Method and apparatus for a DMT transmitter having a data for matter coupled directly to a constellation encoder 失效用于具有直接耦合到星座编码器的物质数据的DMT发射机的方法和装置
公开(公告)号：US5606577A
公开(公告)日：1997-02-25
申请号：US378847
申请日：1995-01-26
CPC分类号： H04L27/2602 , H04L27/2626
摘要： In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), the primary site (102) and each of the secondary sites (104-108) includes a DMT transmitter. Such a DMT transmitter includes a discrete multi-tone encoder that receives an ordered data stream and produces an encoded data stream based on bit loading information, and a data formatter operably coupled to the discrete multi-tone encoder, wherein the data formatter receives transmit data entries and produces the ordered data stream based on carrier channel allocation information.
摘要翻译： 在利用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，主站点（102）和每个次站点（104-108）包括DMT发射机。 这种DMT发射机包括离散多音调编码器，其接收有序数据流并基于比特加载信息产生编码数据流，以及可操作地耦合到离散多音调编码器的数据格式化器，其中数据格式器接收发射数据 并根据载波信道分配信息产生有序数据流。
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公开(公告)号：US5495483A
公开(公告)日：1996-02-27
申请号：US378841
申请日：1995-01-26
CPC分类号： H04L5/0007 , H04L5/0046 , H04L5/0064 , H04L5/0087 , H04L5/0094 , H04W28/20 , H04W72/0486
摘要： In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), carrier channel allocations may be performed as follows. When a call request is received, the primary site (102) determines the number of required bits based on the bandwidth requirements of the call. Next, the primary site (102) determines whether the maximum bit loading of a given carrier channel exceeds the number of required bits. If yes, the primary site allocates a carrier channel having a bit loading that most closely matches the number of required bits. If no, the primary site allocates the carrier channel having the maximum bit loading to the call, then calculates a remaining number of required bits. From here, the primary site repeats the above process until a sufficient number of carrier channels have been allocated to the call.
摘要翻译： 在利用DMT技术将主站点（102）耦合到多个次要站点（104-108）的通信系统中，可以如下执行载波信道分配。 当接收到呼叫请求时，主站点（102）基于呼叫的带宽要求来确定所需位数。 接下来，主站点（102）确定给定载波信道的最大位负载是否超过所需位数。 如果是，主站点分配具有最接近匹配所需位数的位加载的载波信道。 如果否，主站点将具有最大位负载的载波信道分配给呼叫，然后计算剩余的所需位数。 从这里，主站点重复上述过程，直到足够数量的载波信道被分配给呼叫。
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9.发明授权Method and apparatus for preventing unauthorized monitoring of wireless data transmissions 失效防止未经授权监控无线数据传输的方法和装置
公开(公告)号：US5602916A
公开(公告)日：1997-02-11
申请号：US317668
申请日：1994-10-05
CPC分类号： H04L63/0442 , H04L12/22 , H04L63/101 , H04L63/105 , H04W12/02 , H04L63/1475
摘要： Preventing unauthorized monitoring of wireless data transmissions is accomplished by routing requests for data, from communication units (114) operating on wireless communication systems (101), to a security gateway (103) which determines a transmission security level, based on the type of data requested, the identity of the data requester, and the identity of the database containing the requested data. Once this is determined, the security gateway (103) establishes a secure communication with the communication unit according to the transmission security level. If the secure communication was successful, the security gateway (103) routes the requested data to the communication unit (114).
摘要翻译： 基于数据类型，防止对无线数据传输的未经授权的监控来实现从对无线通信系统（101）运行的通信单元（114）到确定传输安全级别的安全网关（103）的数据请求， 请求，数据请求者的身份以及包含请求的数据的数据库的身份。 一旦确定，安全网关（103）根据传输安全级别建立与通信单元的安全通信。 如果安全通信成功，则安全网关（103）将所请求的数据路由到通信单元（114）。
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公开(公告)号：US5615261A
公开(公告)日：1997-03-25
申请号：US318415
申请日：1994-10-05
CPC分类号： H04K3/224
摘要： Detection of illicit radio frequency (RF) data transmissions is accomplished by employing an RF security monitor (120) positioned within the transmission range of a wireless communication system (101). As a first RF node (109) communicates data to a second RF node (111 ) via an RF communication path (115), the RF security monitor (120) monitors this communication to determine whether it is an illicit RF data communication. Illicit RF data communications may include, but are not limited to, a particular data type that should not be transmitted over a wireless channel, or data transmitted with an improper security level. When an illicit RF data communication occurs, the RF security monitor (120) sends a message to a data distributor (104) informing the data distributor (104) of the illicit RF transmission. Typically, the data distributor (104) will respond with an instruction as to how this and subsequent illicit RF transmissions are to be handled.
摘要翻译： 通过采用位于无线通信系统（101）的传输范围内的RF安全监视器（120）来实现非法射频（RF）数据传输的检测。 作为第一RF节点（109）经由RF通信路径（115）将数据传送到第二RF节点（111），RF安全监视器（120）监视该通信以确定其是否是非法的RF数据通信。 非法RF数据通信可以包括但不限于不应通过无线信道发送的特定数据类型或者以不正确的安全级别发送的数据。 当发生非法RF数据通信时，RF安全监视器（120）向数据分发器（104）发送消息，通知数据分发器（104）非法RF传输。 通常，数据分配器（104）将响应关于如何处理这个和随后的非法RF传输的指令。
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