公开(公告)号：US5781540A

公开(公告)日：1998-07-14

申请号：US497582

申请日：1995-06-30

Applicant: James Eryx Malcolm ,  Daniel Fraley ,  Adrian Morris ,  David Roos ,  Kumar Swaminathan ,  Seok Ho Kim ,  Robert Carroll Marquart

Inventor： James Eryx Malcolm ,  Daniel Fraley ,  Adrian Morris ,  David Roos ,  Kumar Swaminathan ,  Seok Ho Kim ,  Robert Carroll Marquart

IPC: H04B7/185 ,  H04J3/06 ,  H04L7/04 ,  H04L7/10 ,  H04B7/212

CPC classification number: H04J3/0605 ,  H04B7/18532 ,  H04L7/046 ,  H04L7/10

Abstract: The present invention relates to a device and a method for communicating in a mobile communication system. The method provides a carrier signal having a plurality of frames. Each frame has a plurality of time slots, and each time slot comprises a plurality of transmission bits. A group of time slots are assigned to a communication channel. A traffic burst signal having a plurality of traffic symbols is transmitted over the communication channel by transmitting a first preamble over one of the assigned time slots, and transmitting a second preamble and at least one of the traffic symbols over at least one of the other assigned time slots. The second preamble occupies fewer transmission bits than the first preamble. The apparatus for transmitting a telephony signal over an RF channel includes a modem receiving a digitized PCM telephony signal and producing a traffic burst signal, and a transmitting unit in communication with the modem for transmitting a FDMA/TDMA signal carrying a plurality of traffic burst signals. At least one of the traffic burst signals carries a limited preamble message including a header field and a unique word field and at least one digitized voice message associated with a telephone call. Another traffic burst signal carries at least one signal acquisition message including a unique word field.

Abstract translation: 本发明涉及用于在移动通信系统中进行通信的装置和方法。 该方法提供具有多个帧的载波信号。 每个帧具有多个时隙，并且每个时隙包括多个传输比特。 一组时隙被分配给通信信道。 通过在所分配的时隙中的一个发送第一前同步码，通过通信信道发送具有多个业务符号的业务突发信号，并且通过至少一个其他分配的业务符号发送第二前导码和至少一个业务符号 时隙。 第二前导码占用比第一前同步码少的传输比特。 用于通过RF信道发送电话信号的装置包括调制解调器，接收数字化的PCM电话信号并产生业务脉冲串信号，以及与调制解调器通信的发送单元，用于发送携带多个话务脉冲串信号的FDMA / TDMA信号 。 业务突发信号中的至少一个携带有限的前导消息，其包括报头字段和唯一字字段以及与电话呼叫相关联的至少一个数字化语音消息。 另一业务脉冲串信号携带至少一个信号获取消息，其包括唯一的字字段。