公开(公告)号：US20030012212A1

公开(公告)日：2003-01-16

申请号：US09805958

申请日：2001-03-14

Applicant: Nortel Networks Limited

Inventor： Mark Earnshaw ,  Yoon Chae Cheong ,  Wei Huang

IPC: H04J003/12

CPC classification number: H04L1/1621 ,  H04L1/1685 ,  H04L1/188 ,  H04L69/28

Abstract: A radio link protocol for a communications system ensures that delivery of Internet protocol data packets occurs within a set delay bound for the packets, in order to satisfy specified quality of service levels. Data packets arriving at a transmitter are subdivided into data blocks. As each block is transmitted, the transmitter starts an associated acknowledgement timer. The timer is turned off, before it expires, if the transmitter timely receives from a receiver a message informing the transmitter that the associated block was successfully received. If such message is not received, the timer expires and the transmitter sends an acknowledgement request signal to the receiver and starts an associated panic timer. The panic timer is turned off, before it expires, if the transmitter subsequently timely receives a message that the associated block was successfully received. If such message not received, the panic timer expires and the transmitter sends one of more copies of the corresponding block to the receiver before occurrence of the delay bound. If the transmitter receives a negative acknowledgement message from the receiver, that a block is missing or corrupted, the transmitter retransmits a copy of the block to the receiver. To reduce messaging traffic, the transmitter cancels acknowledgement and panic timers based upon information contained in negative acknowledgement messages, and the receiver can periodically send acknowledgement messages to inform the transmitter of successfully received blocks.

Abstract translation: 用于通信系统的无线电链路协议确保互联网协议数据分组的传送在分组的设置的延迟范围内发生，以便满足指定的服务质量水平。 到达发射机的数据分组被细分为数据块。 当每个块被发送时，发射机启动相关联的确认定时器。 定时器在其到期之前被关闭，如果发射机从接收机及时接收到通知发射机相关块被成功接收的消息。 如果没有接收到这样的消息，则定时器到期，并且发射机向接收机发送确认请求信号并启动相关联的紧急定时器。 紧急定时器在其过期之前被关闭，如果发射机随后及时接收到相关块被成功接收的消息。 如果没有接收到这样的消息，则在发生延迟限制之前，紧急定时器到期并且发送器将相应块的多个副本发送到接收机。 如果发射机从接收机接收到否定的确认消息，则该块丢失或损坏，则发射机将该块的副本重传到接收机。 为了减少消息传送流量，发射机根据包含在否定确认消息中的信息来取消确认和紧急定时器，并且接收机可以周期性地发送确认消息以通知发射机成功接收的块。

公开(公告)号：US20040081113A1

公开(公告)日：2004-04-29

申请号：US10273965

申请日：2002-10-18

Applicant: NORTEL NETWORKS LIMITED

Inventor： Mark Earnshaw ,  Eman A. Fituri ,  Gamini Senarath ,  David G. Steer

IPC: H04B007/216

CPC classification number: H04J11/0023 ,  H04J13/004

Abstract: The present invention uses a portion of an orthogonal spreading code space in a CDMA spectrum for uplink signaling from a user element to a base station. By assigning the user elements one or more signaling codes, which are orthogonal to those used to spread data, to use for uplink signaling, the present invention significantly reduces interference between signaling channels, and between the data channels and the signaling channels, while supporting additional capacity. The signaling codes may be individually assigned to user elements or assigned to groups of user elements. Further, different length signaling codes may be assigned to the user elements to support different signaling rates depending on Quality of Service (QoS) requirements.

公开(公告)号：US20040076170A1

公开(公告)日：2004-04-22

申请号：US10273838

申请日：2002-10-18

Applicant: NORTEL NETWORKS LIMITED

Inventor： Mark Earnshaw ,  Eman A. Fituri ,  Gamini Senarath ,  David G. Steer

IPC: H04B007/216

CPC classification number: H04J13/20 ,  H04B2201/709709 ,  H04J13/0044

Abstract: The present invention uses a portion of an orthogonal spreading code space in a CDMA spectrum for uplink signaling from a user element to a base station. By assigning the user elements one or more signaling codes, which are orthogonal to those used to spread data, to use for uplink signaling, the present invention significantly reduces interference between signaling channels, and between the data channels and the signaling channels, while supporting additional capacity. The signaling codes may be individually assigned to user elements or assigned to groups of user elements. Further, different length signaling codes may be assigned to the user elements to support different signaling rates depending on Quality of Service (QoS) requirements.

Abstract translation: 本发明使用CDMA频谱中的正交扩展码空间的一部分用于从用户单元到基站的上行链路信令。 通过为用户元件分配与用于扩展数据的那些正交的一个或多个信令码用于上行链路信令，本发明显着减少信令信道之间以及数据信道和信令信道之间的干扰，同时支持附加 容量。 信令代码可以被单独分配给用户元素或分配给用户组的组。 此外，可以将不同长度的信令码分配给用户元件，以根据服务质量（QoS）要求来支持不同的信令速率。